/*
- * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_FREE_COPYRIGHT@
*/
-/*
+/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
* All Rights Reserved.
- *
+ *
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
- *
+ *
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
+ *
* Carnegie Mellon requests users of this software to return to
- *
+ *
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
- *
+ *
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#include <mach/mach_vm.h>
#include <mach/semaphore.h>
#include <mach/task_info.h>
+#include <mach/task_inspect.h>
#include <mach/task_special_ports.h>
#include <mach/sdt.h>
#include <kern/kalloc.h>
#include <kern/kern_cdata.h>
#include <kern/processor.h>
-#include <kern/sched_prim.h> /* for thread_wakeup */
+#include <kern/sched_prim.h> /* for thread_wakeup */
#include <kern/ipc_tt.h>
#include <kern/host.h>
#include <kern/clock.h>
#include <kern/exc_resource.h>
#include <kern/machine.h>
#include <kern/policy_internal.h>
+#include <kern/restartable.h>
#include <corpses/task_corpse.h>
#if CONFIG_TELEMETRY
#include <kern/telemetry.h>
#endif
+#if MONOTONIC
+#include <kern/monotonic.h>
+#include <machine/monotonic.h>
+#endif /* MONOTONIC */
+
+#include <os/log.h>
+
#include <vm/pmap.h>
#include <vm/vm_map.h>
-#include <vm/vm_kern.h> /* for kernel_map, ipc_kernel_map */
+#include <vm/vm_kern.h> /* for kernel_map, ipc_kernel_map */
#include <vm/vm_pageout.h>
#include <vm/vm_protos.h>
#include <vm/vm_purgeable_internal.h>
+#include <vm/vm_compressor_pager.h>
#include <sys/resource.h>
#include <sys/signalvar.h> /* for coredump */
-
+#include <sys/bsdtask_info.h>
/*
* Exported interfaces
*/
#include <libkern/OSDebug.h>
#include <libkern/OSAtomic.h>
+#include <libkern/section_keywords.h>
-#if CONFIG_ATM
-#include <atm/atm_internal.h>
-#endif
+#include <mach-o/loader.h>
+#include <kdp/kdp_dyld.h>
-#include <kern/sfi.h> /* picks up ledger.h */
+#include <kern/sfi.h> /* picks up ledger.h */
#if CONFIG_MACF
#include <security/mac_mach_internal.h>
#endif
+#include <IOKit/IOBSD.h>
+
#if KPERF
extern int kpc_force_all_ctrs(task_t, int);
#endif
-task_t kernel_task;
-zone_t task_zone;
-lck_attr_t task_lck_attr;
-lck_grp_t task_lck_grp;
-lck_grp_attr_t task_lck_grp_attr;
+SECURITY_READ_ONLY_LATE(task_t) kernel_task;
+
+static SECURITY_READ_ONLY_LATE(zone_t) task_zone;
+ZONE_INIT(&task_zone, "tasks", sizeof(struct task),
+ ZC_NOENCRYPT | ZC_ZFREE_CLEARMEM,
+ ZONE_ID_TASK, NULL);
extern int exc_via_corpse_forking;
-extern int unify_corpse_blob_alloc;
extern int corpse_for_fatal_memkill;
+extern boolean_t proc_send_synchronous_EXC_RESOURCE(void *p);
+extern void task_disown_frozen_csegs(task_t owner_task);
/* Flag set by core audio when audio is playing. Used to stifle EXC_RESOURCE generation when active. */
int audio_active = 0;
+/*
+ * structure for tracking zone usage
+ * Used either one per task/thread for all zones or <per-task,per-zone>.
+ */
+typedef struct zinfo_usage_store_t {
+ /* These fields may be updated atomically, and so must be 8 byte aligned */
+ uint64_t alloc __attribute__((aligned(8))); /* allocation counter */
+ uint64_t free __attribute__((aligned(8))); /* free counter */
+} zinfo_usage_store_t;
+
zinfo_usage_store_t tasks_tkm_private;
zinfo_usage_store_t tasks_tkm_shared;
/* A container to accumulate statistics for expired tasks */
-expired_task_statistics_t dead_task_statistics;
-lck_spin_t dead_task_statistics_lock;
+expired_task_statistics_t dead_task_statistics;
+LCK_SPIN_DECLARE_ATTR(dead_task_statistics_lock, &task_lck_grp, &task_lck_attr);
ledger_template_t task_ledger_template = NULL;
-struct _task_ledger_indices task_ledgers __attribute__((used)) =
- {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- { 0 /* initialized at runtime */},
-#ifdef CONFIG_BANK
- -1, -1,
+/* global lock for task_dyld_process_info_notify_{register, deregister, get_trap} */
+LCK_GRP_DECLARE(g_dyldinfo_mtx_grp, "g_dyldinfo");
+LCK_MTX_DECLARE(g_dyldinfo_mtx, &g_dyldinfo_mtx_grp);
+
+SECURITY_READ_ONLY_LATE(struct _task_ledger_indices) task_ledgers __attribute__((used)) =
+{.cpu_time = -1,
+ .tkm_private = -1,
+ .tkm_shared = -1,
+ .phys_mem = -1,
+ .wired_mem = -1,
+ .internal = -1,
+ .iokit_mapped = -1,
+ .alternate_accounting = -1,
+ .alternate_accounting_compressed = -1,
+ .page_table = -1,
+ .phys_footprint = -1,
+ .internal_compressed = -1,
+ .purgeable_volatile = -1,
+ .purgeable_nonvolatile = -1,
+ .purgeable_volatile_compressed = -1,
+ .purgeable_nonvolatile_compressed = -1,
+ .tagged_nofootprint = -1,
+ .tagged_footprint = -1,
+ .tagged_nofootprint_compressed = -1,
+ .tagged_footprint_compressed = -1,
+ .network_volatile = -1,
+ .network_nonvolatile = -1,
+ .network_volatile_compressed = -1,
+ .network_nonvolatile_compressed = -1,
+ .media_nofootprint = -1,
+ .media_footprint = -1,
+ .media_nofootprint_compressed = -1,
+ .media_footprint_compressed = -1,
+ .graphics_nofootprint = -1,
+ .graphics_footprint = -1,
+ .graphics_nofootprint_compressed = -1,
+ .graphics_footprint_compressed = -1,
+ .neural_nofootprint = -1,
+ .neural_footprint = -1,
+ .neural_nofootprint_compressed = -1,
+ .neural_footprint_compressed = -1,
+ .platform_idle_wakeups = -1,
+ .interrupt_wakeups = -1,
+#if CONFIG_SCHED_SFI
+ .sfi_wait_times = { 0 /* initialized at runtime */},
+#endif /* CONFIG_SCHED_SFI */
+ .cpu_time_billed_to_me = -1,
+ .cpu_time_billed_to_others = -1,
+ .physical_writes = -1,
+ .logical_writes = -1,
+ .logical_writes_to_external = -1,
+#if DEBUG || DEVELOPMENT
+ .pages_grabbed = -1,
+ .pages_grabbed_kern = -1,
+ .pages_grabbed_iopl = -1,
+ .pages_grabbed_upl = -1,
#endif
- -1, -1,
- };
+#if CONFIG_FREEZE
+ .frozen_to_swap = -1,
+#endif /* CONFIG_FREEZE */
+ .energy_billed_to_me = -1,
+ .energy_billed_to_others = -1,
+#if CONFIG_PHYS_WRITE_ACCT
+ .fs_metadata_writes = -1,
+#endif /* CONFIG_PHYS_WRITE_ACCT */
+};
/* System sleep state */
boolean_t tasks_suspend_state;
kern_return_t task_suspend_internal(task_t);
kern_return_t task_resume_internal(task_t);
static kern_return_t task_start_halt_locked(task_t task, boolean_t should_mark_corpse);
-int proc_list_uptrs(void *p, uint64_t *udata_buffer, int size);
extern kern_return_t iokit_task_terminate(task_t task);
+extern void iokit_task_app_suspended_changed(task_t task);
extern kern_return_t exception_deliver(thread_t, exception_type_t, mach_exception_data_t, mach_msg_type_number_t, struct exception_action *, lck_mtx_t *);
extern void bsd_copythreadname(void *dst_uth, void *src_uth);
extern kern_return_t thread_resume(thread_t thread);
// Warn tasks when they hit 80% of their memory limit.
-#define PHYS_FOOTPRINT_WARNING_LEVEL 80
+#define PHYS_FOOTPRINT_WARNING_LEVEL 80
-#define TASK_WAKEUPS_MONITOR_DEFAULT_LIMIT 150 /* wakeups per second */
-#define TASK_WAKEUPS_MONITOR_DEFAULT_INTERVAL 300 /* in seconds. */
+#define TASK_WAKEUPS_MONITOR_DEFAULT_LIMIT 150 /* wakeups per second */
+#define TASK_WAKEUPS_MONITOR_DEFAULT_INTERVAL 300 /* in seconds. */
/*
* Level (in terms of percentage of the limit) at which the wakeups monitor triggers telemetry.
* (ie when the task's wakeups rate exceeds 70% of the limit, start taking user
* stacktraces, aka micro-stackshots)
*/
-#define TASK_WAKEUPS_MONITOR_DEFAULT_USTACKSHOTS_TRIGGER 70
+#define TASK_WAKEUPS_MONITOR_DEFAULT_USTACKSHOTS_TRIGGER 70
int task_wakeups_monitor_interval; /* In seconds. Time period over which wakeups rate is observed */
int task_wakeups_monitor_rate; /* In hz. Maximum allowable wakeups per task before EXC_RESOURCE is sent */
-int task_wakeups_monitor_ustackshots_trigger_pct; /* Percentage. Level at which we start gathering telemetry. */
+unsigned int task_wakeups_monitor_ustackshots_trigger_pct; /* Percentage. Level at which we start gathering telemetry. */
int disable_exc_resource; /* Global override to supress EXC_RESOURCE for resource monitor violations. */
ledger_amount_t max_task_footprint = 0; /* Per-task limit on physical memory consumption in bytes */
-int max_task_footprint_warning_level = 0; /* Per-task limit warning percentage */
+unsigned int max_task_footprint_warning_level = 0; /* Per-task limit warning percentage */
int max_task_footprint_mb = 0; /* Per-task limit on physical memory consumption in megabytes */
/* I/O Monitor Limits */
-#define IOMON_DEFAULT_LIMIT (20480ull) /* MB of logical/physical I/O */
-#define IOMON_DEFAULT_INTERVAL (86400ull) /* in seconds */
+#define IOMON_DEFAULT_LIMIT (20480ull) /* MB of logical/physical I/O */
+#define IOMON_DEFAULT_INTERVAL (86400ull) /* in seconds */
+
+uint64_t task_iomon_limit_mb; /* Per-task I/O monitor limit in MBs */
+uint64_t task_iomon_interval_secs; /* Per-task I/O monitor interval in secs */
-uint64_t task_iomon_limit_mb; /* Per-task I/O monitor limit in MBs */
-uint64_t task_iomon_interval_secs; /* Per-task I/O monitor interval in secs */
+#define IO_TELEMETRY_DEFAULT_LIMIT (10ll * 1024ll * 1024ll)
+int64_t io_telemetry_limit; /* Threshold to take a microstackshot (0 indicated I/O telemetry is turned off) */
+int64_t global_logical_writes_count = 0; /* Global count for logical writes */
+int64_t global_logical_writes_to_external_count = 0; /* Global count for logical writes to external storage*/
+static boolean_t global_update_logical_writes(int64_t, int64_t*);
-#define IO_TELEMETRY_DEFAULT_LIMIT (10ll * 1024ll * 1024ll)
-int64_t io_telemetry_limit; /* Threshold to take a microstackshot (0 indicated I/O telemetry is turned off) */
-int64_t global_logical_writes_count = 0; /* Global count for logical writes */
-static boolean_t global_update_logical_writes(int64_t);
+#define TASK_MAX_THREAD_LIMIT 256
#if MACH_ASSERT
int pmap_ledgers_panic = 1;
+int pmap_ledgers_panic_leeway = 3;
#endif /* MACH_ASSERT */
int task_max = CONFIG_TASK_MAX; /* Max number of tasks */
#endif
#ifdef MACH_BSD
-extern void proc_getexecutableuuid(void *, unsigned char *, unsigned long);
-extern int proc_pid(struct proc *p);
-extern int proc_selfpid(void);
-extern char *proc_name_address(struct proc *p);
+extern uint32_t proc_platform(const struct proc *);
+extern uint32_t proc_min_sdk(struct proc *);
+extern void proc_getexecutableuuid(void *, unsigned char *, unsigned long);
+extern int proc_pid(struct proc *p);
+extern int proc_selfpid(void);
+extern struct proc *current_proc(void);
+extern char *proc_name_address(struct proc *p);
extern uint64_t get_dispatchqueue_offset_from_proc(void *);
+extern int kevent_proc_copy_uptrs(void *proc, uint64_t *buf, uint32_t bufsize);
+extern void workq_proc_suspended(struct proc *p);
+extern void workq_proc_resumed(struct proc *p);
#if CONFIG_MEMORYSTATUS
-extern void proc_memstat_terminated(struct proc* p, boolean_t set);
-extern boolean_t memorystatus_turnoff_exception_and_get_fatalness(boolean_t warning, const int max_footprint_mb);
-extern void memorystatus_on_ledger_footprint_exceeded(int warning, boolean_t is_fatal);
+extern void proc_memstat_terminated(struct proc* p, boolean_t set);
+extern void memorystatus_on_ledger_footprint_exceeded(int warning, boolean_t memlimit_is_active, boolean_t memlimit_is_fatal);
+extern void memorystatus_log_exception(const int max_footprint_mb, boolean_t memlimit_is_active, boolean_t memlimit_is_fatal);
+extern boolean_t memorystatus_allowed_vm_map_fork(task_t task);
+extern uint64_t memorystatus_available_memory_internal(struct proc *p);
+
+#if DEVELOPMENT || DEBUG
+extern void memorystatus_abort_vm_map_fork(task_t);
+#endif
+
#endif /* CONFIG_MEMORYSTATUS */
#endif /* MACH_BSD */
+#if DEVELOPMENT || DEBUG
+int exc_resource_threads_enabled;
+#endif /* DEVELOPMENT || DEBUG */
+
+#if (DEVELOPMENT || DEBUG)
+uint32_t task_exc_guard_default = TASK_EXC_GUARD_MP_DELIVER | TASK_EXC_GUARD_MP_ONCE | TASK_EXC_GUARD_MP_CORPSE |
+ TASK_EXC_GUARD_VM_DELIVER | TASK_EXC_GUARD_VM_ONCE | TASK_EXC_GUARD_VM_CORPSE;
+#else
+uint32_t task_exc_guard_default = 0;
+#endif
+
/* Forwards */
static void task_hold_locked(task_t task);
static void task_release_locked(task_t task);
static void task_synchronizer_destroy_all(task_t task);
+static os_ref_count_t
+task_add_turnstile_watchports_locked(
+ task_t task,
+ struct task_watchports *watchports,
+ struct task_watchport_elem **previous_elem_array,
+ ipc_port_t *portwatch_ports,
+ uint32_t portwatch_count);
+
+static os_ref_count_t
+task_remove_turnstile_watchports_locked(
+ task_t task,
+ struct task_watchports *watchports,
+ ipc_port_t *port_freelist);
+
+static struct task_watchports *
+task_watchports_alloc_init(
+ task_t task,
+ thread_t thread,
+ uint32_t count);
-void
-task_backing_store_privileged(
- task_t task)
-{
- task_lock(task);
- task->priv_flags |= VM_BACKING_STORE_PRIV;
- task_unlock(task);
- return;
-}
-
+static void
+task_watchports_deallocate(
+ struct task_watchports *watchports);
void
task_set_64bit(
- task_t task,
- boolean_t is64bit)
+ task_t task,
+ boolean_t is_64bit,
+ boolean_t is_64bit_data)
{
#if defined(__i386__) || defined(__x86_64__) || defined(__arm64__)
thread_t thread;
task_lock(task);
- if (is64bit) {
- if (task_has_64BitAddr(task))
+ /*
+ * Switching to/from 64-bit address spaces
+ */
+ if (is_64bit) {
+ if (!task_has_64Bit_addr(task)) {
+ task_set_64Bit_addr(task);
+ }
+ } else {
+ if (task_has_64Bit_addr(task)) {
+ task_clear_64Bit_addr(task);
+ }
+ }
+
+ /*
+ * Switching to/from 64-bit register state.
+ */
+ if (is_64bit_data) {
+ if (task_has_64Bit_data(task)) {
goto out;
- task_set_64BitAddr(task);
+ }
+
+ task_set_64Bit_data(task);
} else {
- if ( !task_has_64BitAddr(task))
+ if (!task_has_64Bit_data(task)) {
goto out;
- task_clear_64BitAddr(task);
+ }
+
+ task_clear_64Bit_data(task);
}
+
/* FIXME: On x86, the thread save state flavor can diverge from the
* task's 64-bit feature flag due to the 32-bit/64-bit register save
* state dichotomy. Since we can be pre-empted in this interval,
* state with respect to its task's 64-bitness.
*/
-#if defined(__i386__) || defined(__x86_64__) || defined(__arm64__)
+#if defined(__x86_64__) || defined(__arm64__)
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread_mtx_lock(thread);
machine_thread_switch_addrmode(thread);
thread_mtx_unlock(thread);
-
- if (thread == current_thread()) {
- uint64_t arg1, arg2;
- int urgency;
- spl_t spl = splsched();
- /*
- * This call tell that the current thread changed it's 32bitness.
- * Other thread were no more on core when 32bitness was changed,
- * but current_thread() is on core and the previous call to
- * machine_thread_going_on_core() gave 32bitness which is now wrong.
- *
- * This is needed for bring-up, a different callback should be used
- * in the future.
- */
- thread_lock(thread);
- urgency = thread_get_urgency(thread, &arg1, &arg2);
- machine_thread_going_on_core(thread, urgency, 0, 0);
- thread_unlock(thread);
- splx(spl);
- }
}
-#endif /* defined(__i386__) || defined(__x86_64__) || defined(__arm64__) */
+#endif /* defined(__x86_64__) || defined(__arm64__) */
out:
task_unlock(task);
}
+boolean_t
+task_get_64bit_data(task_t task)
+{
+ return task_has_64Bit_data(task);
+}
void
-task_set_dyld_info(task_t task, mach_vm_address_t addr, mach_vm_size_t size)
+task_set_platform_binary(
+ task_t task,
+ boolean_t is_platform)
{
task_lock(task);
- task->all_image_info_addr = addr;
- task->all_image_info_size = size;
+ if (is_platform) {
+ task->t_flags |= TF_PLATFORM;
+ /* set exc guard default behavior for first-party code */
+ task->task_exc_guard = (task_exc_guard_default & TASK_EXC_GUARD_ALL);
+ } else {
+ task->t_flags &= ~(TF_PLATFORM);
+ /* set exc guard default behavior for third-party code */
+ task->task_exc_guard = ((task_exc_guard_default >> TASK_EXC_GUARD_THIRD_PARTY_DEFAULT_SHIFT) & TASK_EXC_GUARD_ALL);
+ }
task_unlock(task);
}
-void
-task_atm_reset(__unused task_t task) {
-
-#if CONFIG_ATM
- if (task->atm_context != NULL) {
- atm_task_descriptor_destroy(task->atm_context);
- task->atm_context = NULL;
+/*
+ * Set or clear per-task TF_CA_CLIENT_WI flag according to specified argument.
+ * Returns "false" if flag is already set, and "true" in other cases.
+ */
+bool
+task_set_ca_client_wi(
+ task_t task,
+ boolean_t set_or_clear)
+{
+ bool ret = true;
+ task_lock(task);
+ if (set_or_clear) {
+ /* Tasks can have only one CA_CLIENT work interval */
+ if (task->t_flags & TF_CA_CLIENT_WI) {
+ ret = false;
+ } else {
+ task->t_flags |= TF_CA_CLIENT_WI;
+ }
+ } else {
+ task->t_flags &= ~TF_CA_CLIENT_WI;
}
-#endif
+ task_unlock(task);
+ return ret;
+}
+void
+task_set_dyld_info(
+ task_t task,
+ mach_vm_address_t addr,
+ mach_vm_size_t size)
+{
+ task_lock(task);
+ task->all_image_info_addr = addr;
+ task->all_image_info_size = size;
+ task_unlock(task);
}
void
-task_bank_reset(__unused task_t task) {
+task_set_mach_header_address(
+ task_t task,
+ mach_vm_address_t addr)
+{
+ task_lock(task);
+ task->mach_header_vm_address = addr;
+ task_unlock(task);
+}
-#if CONFIG_BANK
+void
+task_bank_reset(__unused task_t task)
+{
if (task->bank_context != NULL) {
- bank_task_destroy(task);
+ bank_task_destroy(task);
}
-#endif
-
}
/*
* proc associated with the task.
*/
void
-task_bank_init(__unused task_t task) {
-
-#if CONFIG_BANK
+task_bank_init(__unused task_t task)
+{
if (task->bank_context != NULL) {
panic("Task bank init called with non null bank context for task: %p and bank_context: %p", task, task->bank_context);
}
bank_task_initialize(task);
-#endif
-
}
void
task->t_procflags &= ~TPF_EXEC_COPY;
}
-/*
- * This wait event is t_procflags instead of t_flags because t_flags is volatile
- *
- * TODO: store the flags in the same place as the event
- * rdar://problem/28501994
- */
event_t
task_get_return_wait_event(task_t task)
{
- return (event_t)&task->t_procflags;
+ return (event_t)&task->returnwait_inheritor;
}
void
-task_clear_return_wait(task_t task)
+task_clear_return_wait(task_t task, uint32_t flags)
{
- task_lock(task);
-
- task->t_flags &= ~TF_LRETURNWAIT;
-
- if (task->t_flags & TF_LRETURNWAITER) {
+ if (flags & TCRW_CLEAR_INITIAL_WAIT) {
thread_wakeup(task_get_return_wait_event(task));
- task->t_flags &= ~TF_LRETURNWAITER;
}
- task_unlock(task);
+ if (flags & TCRW_CLEAR_FINAL_WAIT) {
+ is_write_lock(task->itk_space);
+
+ task->t_returnwaitflags &= ~TRW_LRETURNWAIT;
+ task->returnwait_inheritor = NULL;
+
+ if (task->t_returnwaitflags & TRW_LRETURNWAITER) {
+ struct turnstile *turnstile = turnstile_prepare((uintptr_t) task_get_return_wait_event(task),
+ NULL, TURNSTILE_NULL, TURNSTILE_ULOCK);
+
+ waitq_wakeup64_all(&turnstile->ts_waitq,
+ CAST_EVENT64_T(task_get_return_wait_event(task)),
+ THREAD_AWAKENED, 0);
+
+ turnstile_update_inheritor(turnstile, NULL,
+ TURNSTILE_IMMEDIATE_UPDATE | TURNSTILE_INHERITOR_THREAD);
+ turnstile_update_inheritor_complete(turnstile, TURNSTILE_INTERLOCK_HELD);
+
+ turnstile_complete((uintptr_t) task_get_return_wait_event(task), NULL, NULL, TURNSTILE_ULOCK);
+ turnstile_cleanup();
+ task->t_returnwaitflags &= ~TRW_LRETURNWAITER;
+ }
+ is_write_unlock(task->itk_space);
+ }
}
-void
+void __attribute__((noreturn))
task_wait_to_return(void)
{
- task_t task;
+ task_t task = current_task();
- task = current_task();
- task_lock(task);
+ is_write_lock(task->itk_space);
+
+ if (task->t_returnwaitflags & TRW_LRETURNWAIT) {
+ struct turnstile *turnstile = turnstile_prepare((uintptr_t) task_get_return_wait_event(task),
+ NULL, TURNSTILE_NULL, TURNSTILE_ULOCK);
- if (task->t_flags & TF_LRETURNWAIT) {
do {
- task->t_flags |= TF_LRETURNWAITER;
- assert_wait(task_get_return_wait_event(task), THREAD_UNINT);
- task_unlock(task);
+ task->t_returnwaitflags |= TRW_LRETURNWAITER;
+ turnstile_update_inheritor(turnstile, task->returnwait_inheritor,
+ (TURNSTILE_DELAYED_UPDATE | TURNSTILE_INHERITOR_THREAD));
+
+ waitq_assert_wait64(&turnstile->ts_waitq,
+ CAST_EVENT64_T(task_get_return_wait_event(task)),
+ THREAD_UNINT, TIMEOUT_WAIT_FOREVER);
+
+ is_write_unlock(task->itk_space);
+
+ turnstile_update_inheritor_complete(turnstile, TURNSTILE_INTERLOCK_NOT_HELD);
thread_block(THREAD_CONTINUE_NULL);
- task_lock(task);
- } while (task->t_flags & TF_LRETURNWAIT);
+ is_write_lock(task->itk_space);
+ } while (task->t_returnwaitflags & TRW_LRETURNWAIT);
+
+ turnstile_complete((uintptr_t) task_get_return_wait_event(task), NULL, NULL, TURNSTILE_ULOCK);
}
- task_unlock(task);
+ is_write_unlock(task->itk_space);
+ turnstile_cleanup();
+
+
+#if CONFIG_MACF
+ /*
+ * Before jumping to userspace and allowing this process to execute any code,
+ * notify any interested parties.
+ */
+ mac_proc_notify_exec_complete(current_proc());
+#endif
thread_bootstrap_return();
}
+#ifdef CONFIG_32BIT_TELEMETRY
+boolean_t
+task_consume_32bit_log_flag(task_t task)
+{
+ if ((task->t_procflags & TPF_LOG_32BIT_TELEMETRY) != 0) {
+ task->t_procflags &= ~TPF_LOG_32BIT_TELEMETRY;
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
+void
+task_set_32bit_log_flag(task_t task)
+{
+ task->t_procflags |= TPF_LOG_32BIT_TELEMETRY;
+}
+#endif /* CONFIG_32BIT_TELEMETRY */
+
boolean_t
task_is_exec_copy(task_t task)
{
return task->active;
}
+boolean_t
+task_is_halting(task_t task)
+{
+ return task->halting;
+}
+
#if TASK_REFERENCE_LEAK_DEBUG
#include <kern/btlog.h>
static btlog_t *task_ref_btlog;
-#define TASK_REF_OP_INCR 0x1
-#define TASK_REF_OP_DECR 0x2
+#define TASK_REF_OP_INCR 0x1
+#define TASK_REF_OP_DECR 0x2
-#define TASK_REF_NUM_RECORDS 100000
-#define TASK_REF_BTDEPTH 7
+#define TASK_REF_NUM_RECORDS 100000
+#define TASK_REF_BTDEPTH 7
void
task_reference_internal(task_t task)
void * bt[TASK_REF_BTDEPTH];
int numsaved = 0;
+ task_require(task);
+ os_ref_retain(&task->ref_count);
+
numsaved = OSBacktrace(bt, TASK_REF_BTDEPTH);
-
- (void)hw_atomic_add(&(task)->ref_count, 1);
btlog_add_entry(task_ref_btlog, task, TASK_REF_OP_INCR,
- bt, numsaved);
+ bt, numsaved);
}
-uint32_t
+os_ref_count_t
task_deallocate_internal(task_t task)
{
void * bt[TASK_REF_BTDEPTH];
int numsaved = 0;
numsaved = OSBacktrace(bt, TASK_REF_BTDEPTH);
-
btlog_add_entry(task_ref_btlog, task, TASK_REF_OP_DECR,
- bt, numsaved);
- return hw_atomic_sub(&(task)->ref_count, 1);
+ bt, numsaved);
+
+ return os_ref_release(&task->ref_count);
}
#endif /* TASK_REFERENCE_LEAK_DEBUG */
void
task_init(void)
{
-
- lck_grp_attr_setdefault(&task_lck_grp_attr);
- lck_grp_init(&task_lck_grp, "task", &task_lck_grp_attr);
- lck_attr_setdefault(&task_lck_attr);
- lck_mtx_init(&tasks_threads_lock, &task_lck_grp, &task_lck_attr);
- lck_mtx_init(&tasks_corpse_lock, &task_lck_grp, &task_lck_attr);
-
- task_zone = zinit(
- sizeof(struct task),
- task_max * sizeof(struct task),
- TASK_CHUNK * sizeof(struct task),
- "tasks");
-
- zone_change(task_zone, Z_NOENCRYPT, TRUE);
-
-
/*
* Configure per-task memory limit.
* The boot-arg is interpreted as Megabytes,
* Setting the boot-arg to 0 disables task limits.
*/
if (!PE_parse_boot_argn("max_task_pmem", &max_task_footprint_mb,
- sizeof (max_task_footprint_mb))) {
+ sizeof(max_task_footprint_mb))) {
/*
* No limit was found in boot-args, so go look in the device tree.
*/
if (!PE_get_default("kern.max_task_pmem", &max_task_footprint_mb,
- sizeof(max_task_footprint_mb))) {
+ sizeof(max_task_footprint_mb))) {
/*
* No limit was found in device tree.
*/
if (max_task_footprint_mb != 0) {
#if CONFIG_MEMORYSTATUS
if (max_task_footprint_mb < 50) {
- printf("Warning: max_task_pmem %d below minimum.\n",
- max_task_footprint_mb);
- max_task_footprint_mb = 50;
+ printf("Warning: max_task_pmem %d below minimum.\n",
+ max_task_footprint_mb);
+ max_task_footprint_mb = 50;
}
printf("Limiting task physical memory footprint to %d MB\n",
- max_task_footprint_mb);
+ max_task_footprint_mb);
max_task_footprint = (ledger_amount_t)max_task_footprint_mb * 1024 * 1024; // Convert MB to bytes
#endif /* CONFIG_MEMORYSTATUS */
}
-#if MACH_ASSERT
- PE_parse_boot_argn("pmap_ledgers_panic", &pmap_ledgers_panic,
- sizeof (pmap_ledgers_panic));
-#endif /* MACH_ASSERT */
+#if DEVELOPMENT || DEBUG
+ if (!PE_parse_boot_argn("exc_resource_threads",
+ &exc_resource_threads_enabled,
+ sizeof(exc_resource_threads_enabled))) {
+ exc_resource_threads_enabled = 1;
+ }
+ PE_parse_boot_argn("task_exc_guard_default",
+ &task_exc_guard_default,
+ sizeof(task_exc_guard_default));
+#endif /* DEVELOPMENT || DEBUG */
#if CONFIG_COREDUMP
if (!PE_parse_boot_argn("hwm_user_cores", &hwm_user_cores,
- sizeof (hwm_user_cores))) {
+ sizeof(hwm_user_cores))) {
hwm_user_cores = 0;
}
#endif
proc_init_cpumon_params();
- if (!PE_parse_boot_argn("task_wakeups_monitor_rate", &task_wakeups_monitor_rate, sizeof (task_wakeups_monitor_rate))) {
+ if (!PE_parse_boot_argn("task_wakeups_monitor_rate", &task_wakeups_monitor_rate, sizeof(task_wakeups_monitor_rate))) {
task_wakeups_monitor_rate = TASK_WAKEUPS_MONITOR_DEFAULT_LIMIT;
}
- if (!PE_parse_boot_argn("task_wakeups_monitor_interval", &task_wakeups_monitor_interval, sizeof (task_wakeups_monitor_interval))) {
+ if (!PE_parse_boot_argn("task_wakeups_monitor_interval", &task_wakeups_monitor_interval, sizeof(task_wakeups_monitor_interval))) {
task_wakeups_monitor_interval = TASK_WAKEUPS_MONITOR_DEFAULT_INTERVAL;
}
if (!PE_parse_boot_argn("task_wakeups_monitor_ustackshots_trigger_pct", &task_wakeups_monitor_ustackshots_trigger_pct,
- sizeof (task_wakeups_monitor_ustackshots_trigger_pct))) {
+ sizeof(task_wakeups_monitor_ustackshots_trigger_pct))) {
task_wakeups_monitor_ustackshots_trigger_pct = TASK_WAKEUPS_MONITOR_DEFAULT_USTACKSHOTS_TRIGGER;
}
if (!PE_parse_boot_argn("disable_exc_resource", &disable_exc_resource,
- sizeof (disable_exc_resource))) {
+ sizeof(disable_exc_resource))) {
disable_exc_resource = 0;
}
- if (!PE_parse_boot_argn("task_iomon_limit_mb", &task_iomon_limit_mb, sizeof (task_iomon_limit_mb))) {
+ if (!PE_parse_boot_argn("task_iomon_limit_mb", &task_iomon_limit_mb, sizeof(task_iomon_limit_mb))) {
task_iomon_limit_mb = IOMON_DEFAULT_LIMIT;
}
- if (!PE_parse_boot_argn("task_iomon_interval_secs", &task_iomon_interval_secs, sizeof (task_iomon_interval_secs))) {
+ if (!PE_parse_boot_argn("task_iomon_interval_secs", &task_iomon_interval_secs, sizeof(task_iomon_interval_secs))) {
task_iomon_interval_secs = IOMON_DEFAULT_INTERVAL;
}
- if (!PE_parse_boot_argn("io_telemetry_limit", &io_telemetry_limit, sizeof (io_telemetry_limit))) {
+ if (!PE_parse_boot_argn("io_telemetry_limit", &io_telemetry_limit, sizeof(io_telemetry_limit))) {
io_telemetry_limit = IO_TELEMETRY_DEFAULT_LIMIT;
}
* Create the kernel task as the first task.
*/
#ifdef __LP64__
- if (task_create_internal(TASK_NULL, NULL, FALSE, TRUE, TF_NONE, TPF_NONE, &kernel_task) != KERN_SUCCESS)
+ if (task_create_internal(TASK_NULL, NULL, FALSE, TRUE, TRUE, TF_NONE, TPF_NONE, TWF_NONE, &kernel_task) != KERN_SUCCESS)
#else
- if (task_create_internal(TASK_NULL, NULL, FALSE, FALSE, TF_NONE, TPF_NONE, &kernel_task) != KERN_SUCCESS)
+ if (task_create_internal(TASK_NULL, NULL, FALSE, FALSE, FALSE, TF_NONE, TPF_NONE, TWF_NONE, &kernel_task) != KERN_SUCCESS)
+#endif
+ { panic("task_init\n");}
+
+#if defined(HAS_APPLE_PAC)
+ kernel_task->rop_pid = ml_default_rop_pid();
+ kernel_task->jop_pid = ml_default_jop_pid();
+ // kernel_task never runs at EL0, but machine_thread_state_convert_from/to_user() relies on
+ // disable_user_jop to be false for kernel threads (e.g. in exception delivery on thread_exception_daemon)
+ ml_task_set_disable_user_jop(kernel_task, FALSE);
#endif
- panic("task_init\n");
vm_map_deallocate(kernel_task->map);
kernel_task->map = kernel_map;
- lck_spin_init(&dead_task_statistics_lock, &task_lck_grp, &task_lck_attr);
}
/*
*/
kern_return_t
kernel_task_create(
- __unused task_t parent_task,
- __unused vm_offset_t map_base,
- __unused vm_size_t map_size,
- __unused task_t *child_task)
+ __unused task_t parent_task,
+ __unused vm_offset_t map_base,
+ __unused vm_size_t map_size,
+ __unused task_t *child_task)
{
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
kern_return_t
task_create(
- task_t parent_task,
- __unused ledger_port_array_t ledger_ports,
- __unused mach_msg_type_number_t num_ledger_ports,
- __unused boolean_t inherit_memory,
- __unused task_t *child_task) /* OUT */
+ task_t parent_task,
+ __unused ledger_port_array_t ledger_ports,
+ __unused mach_msg_type_number_t num_ledger_ports,
+ __unused boolean_t inherit_memory,
+ __unused task_t *child_task) /* OUT */
{
- if (parent_task == TASK_NULL)
- return(KERN_INVALID_ARGUMENT);
+ if (parent_task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
/*
* No longer supported: too many calls assume that a task has a valid
* process attached.
*/
- return(KERN_FAILURE);
+ return KERN_FAILURE;
}
kern_return_t
host_security_create_task_token(
- host_security_t host_security,
- task_t parent_task,
- __unused security_token_t sec_token,
- __unused audit_token_t audit_token,
- __unused host_priv_t host_priv,
- __unused ledger_port_array_t ledger_ports,
- __unused mach_msg_type_number_t num_ledger_ports,
- __unused boolean_t inherit_memory,
- __unused task_t *child_task) /* OUT */
-{
- if (parent_task == TASK_NULL)
- return(KERN_INVALID_ARGUMENT);
-
- if (host_security == HOST_NULL)
- return(KERN_INVALID_SECURITY);
+ host_security_t host_security,
+ task_t parent_task,
+ __unused security_token_t sec_token,
+ __unused audit_token_t audit_token,
+ __unused host_priv_t host_priv,
+ __unused ledger_port_array_t ledger_ports,
+ __unused mach_msg_type_number_t num_ledger_ports,
+ __unused boolean_t inherit_memory,
+ __unused task_t *child_task) /* OUT */
+{
+ if (parent_task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ if (host_security == HOST_NULL) {
+ return KERN_INVALID_SECURITY;
+ }
/*
* No longer supported.
*/
- return(KERN_FAILURE);
+ return KERN_FAILURE;
}
/*
*
* iokit_mapped
* IOKit mappings: The total size of all IOKit mappings in this task, regardless of
- clean/dirty or internal/external state].
+ * clean/dirty or internal/external state].
*
* alternate_accounting
* The number of internal dirty pages which are part of IOKit mappings. By definition, these pages
* are counted in both internal *and* iokit_mapped, so we must subtract them from the total to avoid
* double counting.
+ *
+ * pages_grabbed
+ * pages_grabbed counts all page grabs in a task. It is also broken out into three subtypes
+ * which track UPL, IOPL and Kernel page grabs.
*/
void
init_task_ledgers(void)
{
ledger_template_t t;
-
+
assert(task_ledger_template == NULL);
assert(kernel_task == TASK_NULL);
#if MACH_ASSERT
- PE_parse_boot_argn("pmap_ledgers_panic", &pmap_ledgers_panic,
- sizeof (pmap_ledgers_panic));
+ PE_parse_boot_argn("pmap_ledgers_panic",
+ &pmap_ledgers_panic,
+ sizeof(pmap_ledgers_panic));
+ PE_parse_boot_argn("pmap_ledgers_panic_leeway",
+ &pmap_ledgers_panic_leeway,
+ sizeof(pmap_ledgers_panic_leeway));
#endif /* MACH_ASSERT */
- if ((t = ledger_template_create("Per-task ledger")) == NULL)
+ if ((t = ledger_template_create("Per-task ledger")) == NULL) {
panic("couldn't create task ledger template");
+ }
task_ledgers.cpu_time = ledger_entry_add(t, "cpu_time", "sched", "ns");
task_ledgers.tkm_private = ledger_entry_add(t, "tkm_private",
task_ledgers.internal = ledger_entry_add(t, "internal", "physmem",
"bytes");
task_ledgers.iokit_mapped = ledger_entry_add(t, "iokit_mapped", "mappings",
- "bytes");
+ "bytes");
task_ledgers.alternate_accounting = ledger_entry_add(t, "alternate_accounting", "physmem",
- "bytes");
+ "bytes");
task_ledgers.alternate_accounting_compressed = ledger_entry_add(t, "alternate_accounting_compressed", "physmem",
- "bytes");
+ "bytes");
task_ledgers.page_table = ledger_entry_add(t, "page_table", "physmem",
"bytes");
task_ledgers.phys_footprint = ledger_entry_add(t, "phys_footprint", "physmem",
- "bytes");
+ "bytes");
task_ledgers.internal_compressed = ledger_entry_add(t, "internal_compressed", "physmem",
- "bytes");
+ "bytes");
task_ledgers.purgeable_volatile = ledger_entry_add(t, "purgeable_volatile", "physmem", "bytes");
task_ledgers.purgeable_nonvolatile = ledger_entry_add(t, "purgeable_nonvolatile", "physmem", "bytes");
task_ledgers.purgeable_volatile_compressed = ledger_entry_add(t, "purgeable_volatile_compress", "physmem", "bytes");
task_ledgers.purgeable_nonvolatile_compressed = ledger_entry_add(t, "purgeable_nonvolatile_compress", "physmem", "bytes");
+#if DEBUG || DEVELOPMENT
+ task_ledgers.pages_grabbed = ledger_entry_add(t, "pages_grabbed", "physmem", "count");
+ task_ledgers.pages_grabbed_kern = ledger_entry_add(t, "pages_grabbed_kern", "physmem", "count");
+ task_ledgers.pages_grabbed_iopl = ledger_entry_add(t, "pages_grabbed_iopl", "physmem", "count");
+ task_ledgers.pages_grabbed_upl = ledger_entry_add(t, "pages_grabbed_upl", "physmem", "count");
+#endif
+ task_ledgers.tagged_nofootprint = ledger_entry_add(t, "tagged_nofootprint", "physmem", "bytes");
+ task_ledgers.tagged_footprint = ledger_entry_add(t, "tagged_footprint", "physmem", "bytes");
+ task_ledgers.tagged_nofootprint_compressed = ledger_entry_add(t, "tagged_nofootprint_compressed", "physmem", "bytes");
+ task_ledgers.tagged_footprint_compressed = ledger_entry_add(t, "tagged_footprint_compressed", "physmem", "bytes");
+ task_ledgers.network_volatile = ledger_entry_add(t, "network_volatile", "physmem", "bytes");
+ task_ledgers.network_nonvolatile = ledger_entry_add(t, "network_nonvolatile", "physmem", "bytes");
+ task_ledgers.network_volatile_compressed = ledger_entry_add(t, "network_volatile_compressed", "physmem", "bytes");
+ task_ledgers.network_nonvolatile_compressed = ledger_entry_add(t, "network_nonvolatile_compressed", "physmem", "bytes");
+ task_ledgers.media_nofootprint = ledger_entry_add(t, "media_nofootprint", "physmem", "bytes");
+ task_ledgers.media_footprint = ledger_entry_add(t, "media_footprint", "physmem", "bytes");
+ task_ledgers.media_nofootprint_compressed = ledger_entry_add(t, "media_nofootprint_compressed", "physmem", "bytes");
+ task_ledgers.media_footprint_compressed = ledger_entry_add(t, "media_footprint_compressed", "physmem", "bytes");
+ task_ledgers.graphics_nofootprint = ledger_entry_add(t, "graphics_nofootprint", "physmem", "bytes");
+ task_ledgers.graphics_footprint = ledger_entry_add(t, "graphics_footprint", "physmem", "bytes");
+ task_ledgers.graphics_nofootprint_compressed = ledger_entry_add(t, "graphics_nofootprint_compressed", "physmem", "bytes");
+ task_ledgers.graphics_footprint_compressed = ledger_entry_add(t, "graphics_footprint_compressed", "physmem", "bytes");
+ task_ledgers.neural_nofootprint = ledger_entry_add(t, "neural_nofootprint", "physmem", "bytes");
+ task_ledgers.neural_footprint = ledger_entry_add(t, "neural_footprint", "physmem", "bytes");
+ task_ledgers.neural_nofootprint_compressed = ledger_entry_add(t, "neural_nofootprint_compressed", "physmem", "bytes");
+ task_ledgers.neural_footprint_compressed = ledger_entry_add(t, "neural_footprint_compressed", "physmem", "bytes");
+
+#if CONFIG_FREEZE
+ task_ledgers.frozen_to_swap = ledger_entry_add(t, "frozen_to_swap", "physmem", "bytes");
+#endif /* CONFIG_FREEZE */
+
task_ledgers.platform_idle_wakeups = ledger_entry_add(t, "platform_idle_wakeups", "power",
- "count");
+ "count");
task_ledgers.interrupt_wakeups = ledger_entry_add(t, "interrupt_wakeups", "power",
- "count");
-
+ "count");
+
#if CONFIG_SCHED_SFI
sfi_class_id_t class_id, ledger_alias;
for (class_id = SFI_CLASS_UNSPECIFIED; class_id < MAX_SFI_CLASS_ID; class_id++) {
}
}
- assert(task_ledgers.sfi_wait_times[MAX_SFI_CLASS_ID -1] != -1);
+ assert(task_ledgers.sfi_wait_times[MAX_SFI_CLASS_ID - 1] != -1);
#endif /* CONFIG_SCHED_SFI */
-#ifdef CONFIG_BANK
task_ledgers.cpu_time_billed_to_me = ledger_entry_add(t, "cpu_time_billed_to_me", "sched", "ns");
task_ledgers.cpu_time_billed_to_others = ledger_entry_add(t, "cpu_time_billed_to_others", "sched", "ns");
-#endif
task_ledgers.physical_writes = ledger_entry_add(t, "physical_writes", "res", "bytes");
task_ledgers.logical_writes = ledger_entry_add(t, "logical_writes", "res", "bytes");
+ task_ledgers.logical_writes_to_external = ledger_entry_add(t, "logical_writes_to_external", "res", "bytes");
+#if CONFIG_PHYS_WRITE_ACCT
+ task_ledgers.fs_metadata_writes = ledger_entry_add(t, "fs_metadata_writes", "res", "bytes");
+#endif /* CONFIG_PHYS_WRITE_ACCT */
+ task_ledgers.energy_billed_to_me = ledger_entry_add(t, "energy_billed_to_me", "power", "nj");
+ task_ledgers.energy_billed_to_others = ledger_entry_add(t, "energy_billed_to_others", "power", "nj");
if ((task_ledgers.cpu_time < 0) ||
(task_ledgers.tkm_private < 0) ||
(task_ledgers.purgeable_nonvolatile < 0) ||
(task_ledgers.purgeable_volatile_compressed < 0) ||
(task_ledgers.purgeable_nonvolatile_compressed < 0) ||
+ (task_ledgers.tagged_nofootprint < 0) ||
+ (task_ledgers.tagged_footprint < 0) ||
+ (task_ledgers.tagged_nofootprint_compressed < 0) ||
+ (task_ledgers.tagged_footprint_compressed < 0) ||
+#if CONFIG_FREEZE
+ (task_ledgers.frozen_to_swap < 0) ||
+#endif /* CONFIG_FREEZE */
+ (task_ledgers.network_volatile < 0) ||
+ (task_ledgers.network_nonvolatile < 0) ||
+ (task_ledgers.network_volatile_compressed < 0) ||
+ (task_ledgers.network_nonvolatile_compressed < 0) ||
+ (task_ledgers.media_nofootprint < 0) ||
+ (task_ledgers.media_footprint < 0) ||
+ (task_ledgers.media_nofootprint_compressed < 0) ||
+ (task_ledgers.media_footprint_compressed < 0) ||
+ (task_ledgers.graphics_nofootprint < 0) ||
+ (task_ledgers.graphics_footprint < 0) ||
+ (task_ledgers.graphics_nofootprint_compressed < 0) ||
+ (task_ledgers.graphics_footprint_compressed < 0) ||
+ (task_ledgers.neural_nofootprint < 0) ||
+ (task_ledgers.neural_footprint < 0) ||
+ (task_ledgers.neural_nofootprint_compressed < 0) ||
+ (task_ledgers.neural_footprint_compressed < 0) ||
(task_ledgers.platform_idle_wakeups < 0) ||
(task_ledgers.interrupt_wakeups < 0) ||
-#ifdef CONFIG_BANK
(task_ledgers.cpu_time_billed_to_me < 0) || (task_ledgers.cpu_time_billed_to_others < 0) ||
-#endif
(task_ledgers.physical_writes < 0) ||
- (task_ledgers.logical_writes < 0)
+ (task_ledgers.logical_writes < 0) ||
+ (task_ledgers.logical_writes_to_external < 0) ||
+#if CONFIG_PHYS_WRITE_ACCT
+ (task_ledgers.fs_metadata_writes < 0) ||
+#endif /* CONFIG_PHYS_WRITE_ACCT */
+ (task_ledgers.energy_billed_to_me < 0) ||
+ (task_ledgers.energy_billed_to_others < 0)
) {
panic("couldn't create entries for task ledger template");
}
ledger_track_credit_only(t, task_ledgers.phys_footprint);
+ ledger_track_credit_only(t, task_ledgers.page_table);
ledger_track_credit_only(t, task_ledgers.internal);
ledger_track_credit_only(t, task_ledgers.internal_compressed);
ledger_track_credit_only(t, task_ledgers.iokit_mapped);
ledger_track_credit_only(t, task_ledgers.purgeable_nonvolatile);
ledger_track_credit_only(t, task_ledgers.purgeable_volatile_compressed);
ledger_track_credit_only(t, task_ledgers.purgeable_nonvolatile_compressed);
+#if DEBUG || DEVELOPMENT
+ ledger_track_credit_only(t, task_ledgers.pages_grabbed);
+ ledger_track_credit_only(t, task_ledgers.pages_grabbed_kern);
+ ledger_track_credit_only(t, task_ledgers.pages_grabbed_iopl);
+ ledger_track_credit_only(t, task_ledgers.pages_grabbed_upl);
+#endif
+
+ ledger_track_credit_only(t, task_ledgers.tagged_nofootprint);
+ ledger_track_credit_only(t, task_ledgers.tagged_footprint);
+ ledger_track_credit_only(t, task_ledgers.tagged_nofootprint_compressed);
+ ledger_track_credit_only(t, task_ledgers.tagged_footprint_compressed);
+ ledger_track_credit_only(t, task_ledgers.network_volatile);
+ ledger_track_credit_only(t, task_ledgers.network_nonvolatile);
+ ledger_track_credit_only(t, task_ledgers.network_volatile_compressed);
+ ledger_track_credit_only(t, task_ledgers.network_nonvolatile_compressed);
+ ledger_track_credit_only(t, task_ledgers.media_nofootprint);
+ ledger_track_credit_only(t, task_ledgers.media_footprint);
+ ledger_track_credit_only(t, task_ledgers.media_nofootprint_compressed);
+ ledger_track_credit_only(t, task_ledgers.media_footprint_compressed);
+ ledger_track_credit_only(t, task_ledgers.graphics_nofootprint);
+ ledger_track_credit_only(t, task_ledgers.graphics_footprint);
+ ledger_track_credit_only(t, task_ledgers.graphics_nofootprint_compressed);
+ ledger_track_credit_only(t, task_ledgers.graphics_footprint_compressed);
+ ledger_track_credit_only(t, task_ledgers.neural_nofootprint);
+ ledger_track_credit_only(t, task_ledgers.neural_footprint);
+ ledger_track_credit_only(t, task_ledgers.neural_nofootprint_compressed);
+ ledger_track_credit_only(t, task_ledgers.neural_footprint_compressed);
ledger_track_maximum(t, task_ledgers.phys_footprint, 60);
#if MACH_ASSERT
ledger_panic_on_negative(t, task_ledgers.purgeable_nonvolatile);
ledger_panic_on_negative(t, task_ledgers.purgeable_volatile_compressed);
ledger_panic_on_negative(t, task_ledgers.purgeable_nonvolatile_compressed);
+#if CONFIG_PHYS_WRITE_ACCT
+ ledger_panic_on_negative(t, task_ledgers.fs_metadata_writes);
+#endif /* CONFIG_PHYS_WRITE_ACCT */
+
+ ledger_panic_on_negative(t, task_ledgers.tagged_nofootprint);
+ ledger_panic_on_negative(t, task_ledgers.tagged_footprint);
+ ledger_panic_on_negative(t, task_ledgers.tagged_nofootprint_compressed);
+ ledger_panic_on_negative(t, task_ledgers.tagged_footprint_compressed);
+ ledger_panic_on_negative(t, task_ledgers.network_volatile);
+ ledger_panic_on_negative(t, task_ledgers.network_nonvolatile);
+ ledger_panic_on_negative(t, task_ledgers.network_volatile_compressed);
+ ledger_panic_on_negative(t, task_ledgers.network_nonvolatile_compressed);
+ ledger_panic_on_negative(t, task_ledgers.media_nofootprint);
+ ledger_panic_on_negative(t, task_ledgers.media_footprint);
+ ledger_panic_on_negative(t, task_ledgers.media_nofootprint_compressed);
+ ledger_panic_on_negative(t, task_ledgers.media_footprint_compressed);
+ ledger_panic_on_negative(t, task_ledgers.graphics_nofootprint);
+ ledger_panic_on_negative(t, task_ledgers.graphics_footprint);
+ ledger_panic_on_negative(t, task_ledgers.graphics_nofootprint_compressed);
+ ledger_panic_on_negative(t, task_ledgers.graphics_footprint_compressed);
+ ledger_panic_on_negative(t, task_ledgers.neural_nofootprint);
+ ledger_panic_on_negative(t, task_ledgers.neural_footprint);
+ ledger_panic_on_negative(t, task_ledgers.neural_nofootprint_compressed);
+ ledger_panic_on_negative(t, task_ledgers.neural_footprint_compressed);
}
#endif /* MACH_ASSERT */
#endif /* CONFIG_MEMORYSTATUS */
ledger_set_callback(t, task_ledgers.interrupt_wakeups,
- task_wakeups_rate_exceeded, NULL, NULL);
+ task_wakeups_rate_exceeded, NULL, NULL);
ledger_set_callback(t, task_ledgers.physical_writes, task_io_rate_exceeded, (void *)FLAVOR_IO_PHYSICAL_WRITES, NULL);
- ledger_set_callback(t, task_ledgers.logical_writes, task_io_rate_exceeded, (void *)FLAVOR_IO_LOGICAL_WRITES, NULL);
+
+#if XNU_MONITOR
+ ledger_template_complete_secure_alloc(t);
+#else /* XNU_MONITOR */
+ ledger_template_complete(t);
+#endif /* XNU_MONITOR */
task_ledger_template = t;
}
+os_refgrp_decl(static, task_refgrp, "task", NULL);
+
kern_return_t
task_create_internal(
- task_t parent_task,
- coalition_t *parent_coalitions __unused,
- boolean_t inherit_memory,
- boolean_t is_64bit,
- uint32_t t_flags,
- uint32_t t_procflags,
- task_t *child_task) /* OUT */
-{
- task_t new_task;
- vm_shared_region_t shared_region;
- ledger_t ledger = NULL;
+ task_t parent_task,
+ coalition_t *parent_coalitions __unused,
+ boolean_t inherit_memory,
+ __unused boolean_t is_64bit,
+ boolean_t is_64bit_data,
+ uint32_t t_flags,
+ uint32_t t_procflags,
+ uint8_t t_returnwaitflags,
+ task_t *child_task) /* OUT */
+{
+ task_t new_task;
+ vm_shared_region_t shared_region;
+ ledger_t ledger = NULL;
new_task = (task_t) zalloc(task_zone);
- if (new_task == TASK_NULL)
- return(KERN_RESOURCE_SHORTAGE);
+ if (new_task == TASK_NULL) {
+ return KERN_RESOURCE_SHORTAGE;
+ }
/* one ref for just being alive; one for our caller */
- new_task->ref_count = 2;
+ os_ref_init_count(&new_task->ref_count, &task_refgrp, 2);
/* allocate with active entries */
assert(task_ledger_template != NULL);
if ((ledger = ledger_instantiate(task_ledger_template,
- LEDGER_CREATE_ACTIVE_ENTRIES)) == NULL) {
+ LEDGER_CREATE_ACTIVE_ENTRIES)) == NULL) {
zfree(task_zone, new_task);
- return(KERN_RESOURCE_SHORTAGE);
+ return KERN_RESOURCE_SHORTAGE;
}
+ counter_alloc(&(new_task->faults));
+
+#if defined(HAS_APPLE_PAC)
+ ml_task_set_rop_pid(new_task, parent_task, inherit_memory);
+ ml_task_set_jop_pid(new_task, parent_task, inherit_memory);
+ ml_task_set_disable_user_jop(new_task, inherit_memory ? parent_task->disable_user_jop : FALSE);
+#endif
+
+
new_task->ledger = ledger;
#if defined(CONFIG_SCHED_MULTIQ)
#endif
/* if inherit_memory is true, parent_task MUST not be NULL */
- if (!(t_flags & TF_CORPSE_FORK) && inherit_memory)
+ if (!(t_flags & TF_CORPSE_FORK) && inherit_memory) {
new_task->map = vm_map_fork(ledger, parent_task->map, 0);
- else
- new_task->map = vm_map_create(pmap_create(ledger, 0, is_64bit),
- (vm_map_offset_t)(VM_MIN_ADDRESS),
- (vm_map_offset_t)(VM_MAX_ADDRESS), TRUE);
+ } else {
+ unsigned int pmap_flags = is_64bit ? PMAP_CREATE_64BIT : 0;
+ new_task->map = vm_map_create(pmap_create_options(ledger, 0, pmap_flags),
+ (vm_map_offset_t)(VM_MIN_ADDRESS),
+ (vm_map_offset_t)(VM_MAX_ADDRESS), TRUE);
+ }
/* Inherit memlock limit from parent */
- if (parent_task)
+ if (parent_task) {
vm_map_set_user_wire_limit(new_task->map, (vm_size_t)parent_task->map->user_wire_limit);
+ }
lck_mtx_init(&new_task->lock, &task_lck_grp, &task_lck_attr);
queue_init(&new_task->threads);
new_task->legacy_stop_count = 0;
new_task->active = TRUE;
new_task->halting = FALSE;
- new_task->user_data = NULL;
new_task->priv_flags = 0;
new_task->t_flags = t_flags;
new_task->t_procflags = t_procflags;
+ new_task->t_returnwaitflags = t_returnwaitflags;
+ new_task->returnwait_inheritor = current_thread();
new_task->importance = 0;
- new_task->corpse_info_kernel = NULL;
+ new_task->crashed_thread_id = 0;
new_task->exec_token = 0;
+ new_task->watchports = NULL;
+ new_task->restartable_ranges = NULL;
+ new_task->task_exc_guard = 0;
-#if CONFIG_ATM
- new_task->atm_context = NULL;
-#endif
-#if CONFIG_BANK
new_task->bank_context = NULL;
-#endif
#ifdef MACH_BSD
new_task->bsd_info = NULL;
#if CONFIG_MACF
new_task->crash_label = NULL;
+
+ new_task->mach_trap_filter_mask = NULL;
+ new_task->mach_kobj_filter_mask = NULL;
#endif
#if CONFIG_MEMORYSTATUS
task_io_monitor_ctl(new_task, &flags);
#endif /* CONFIG_IO_ACCOUNTING */
-#if defined(__i386__) || defined(__x86_64__)
- new_task->i386_ldt = 0;
-#endif
+ machine_task_init(new_task, parent_task, inherit_memory);
new_task->task_debug = NULL;
new_task->affinity_space = NULL;
+ new_task->t_kpc = 0;
+
new_task->pidsuspended = FALSE;
new_task->frozen = FALSE;
new_task->changing_freeze_state = FALSE;
new_task->hv_task_target = NULL;
#endif /* HYPERVISOR */
+#if CONFIG_TASKWATCH
+ queue_init(&new_task->task_watchers);
+ new_task->num_taskwatchers = 0;
+ new_task->watchapplying = 0;
+#endif /* CONFIG_TASKWATCH */
new_task->mem_notify_reserved = 0;
-#if IMPORTANCE_INHERITANCE
- new_task->task_imp_base = NULL;
-#endif /* IMPORTANCE_INHERITANCE */
-
-#if defined(__x86_64__)
- new_task->uexc_range_start = new_task->uexc_range_size = new_task->uexc_handler = 0;
-#endif
+ new_task->memlimit_attrs_reserved = 0;
new_task->requested_policy = default_task_requested_policy;
new_task->effective_policy = default_task_effective_policy;
+ new_task->task_shared_region_slide = -1;
+
+ task_importance_init_from_parent(new_task, parent_task);
+
if (parent_task != TASK_NULL) {
new_task->sec_token = parent_task->sec_token;
new_task->audit_token = parent_task->audit_token;
shared_region = vm_shared_region_get(parent_task);
vm_shared_region_set(new_task, shared_region);
- if(task_has_64BitAddr(parent_task))
- task_set_64BitAddr(new_task);
+#if __has_feature(ptrauth_calls)
+ /* use parent's shared_region_id */
+ char *shared_region_id = task_get_vm_shared_region_id_and_jop_pid(parent_task, NULL);
+ if (shared_region_id != NULL) {
+ shared_region_key_alloc(shared_region_id, FALSE, 0); /* get a reference */
+ }
+ task_set_shared_region_id(new_task, shared_region_id);
+#endif /* __has_feature(ptrauth_calls) */
+
+ if (task_has_64Bit_addr(parent_task)) {
+ task_set_64Bit_addr(new_task);
+ }
+
+ if (task_has_64Bit_data(parent_task)) {
+ task_set_64Bit_data(new_task);
+ }
+
new_task->all_image_info_addr = parent_task->all_image_info_addr;
new_task->all_image_info_size = parent_task->all_image_info_size;
+ new_task->mach_header_vm_address = 0;
-#if defined(__i386__) || defined(__x86_64__)
- if (inherit_memory && parent_task->i386_ldt)
- new_task->i386_ldt = user_ldt_copy(parent_task->i386_ldt);
-#endif
- if (inherit_memory && parent_task->affinity_space)
+ if (inherit_memory && parent_task->affinity_space) {
task_affinity_create(parent_task, new_task);
+ }
new_task->pset_hint = parent_task->pset_hint = task_choose_pset(parent_task);
-#if IMPORTANCE_INHERITANCE
- ipc_importance_task_t new_task_imp = IIT_NULL;
- boolean_t inherit_receive = TRUE;
-
- if (task_is_marked_importance_donor(parent_task)) {
- new_task_imp = ipc_importance_for_task(new_task, FALSE);
- assert(IIT_NULL != new_task_imp);
- ipc_importance_task_mark_donor(new_task_imp, TRUE);
+ if (parent_task->t_flags & TF_NO_SMT) {
+ new_task->t_flags |= TF_NO_SMT;
}
- if (inherit_receive) {
- if (task_is_marked_importance_receiver(parent_task)) {
- if (IIT_NULL == new_task_imp)
- new_task_imp = ipc_importance_for_task(new_task, FALSE);
- assert(IIT_NULL != new_task_imp);
- ipc_importance_task_mark_receiver(new_task_imp, TRUE);
- }
- if (task_is_marked_importance_denap_receiver(parent_task)) {
- if (IIT_NULL == new_task_imp)
- new_task_imp = ipc_importance_for_task(new_task, FALSE);
- assert(IIT_NULL != new_task_imp);
- ipc_importance_task_mark_denap_receiver(new_task_imp, TRUE);
- }
+ if (parent_task->t_flags & TF_TECS) {
+ new_task->t_flags |= TF_TECS;
}
-
- if (IIT_NULL != new_task_imp) {
- assert(new_task->task_imp_base == new_task_imp);
- ipc_importance_task_release(new_task_imp);
+
+ if (parent_task->t_flags & TF_FILTER_MSG) {
+ new_task->t_flags |= TF_FILTER_MSG;
}
-#endif /* IMPORTANCE_INHERITANCE */
new_task->priority = BASEPRI_DEFAULT;
new_task->max_priority = MAXPRI_USER;
new_task->sec_token = KERNEL_SECURITY_TOKEN;
new_task->audit_token = KERNEL_AUDIT_TOKEN;
#ifdef __LP64__
- if(is_64bit)
- task_set_64BitAddr(new_task);
+ if (is_64bit) {
+ task_set_64Bit_addr(new_task);
+ }
#endif
+
+ if (is_64bit_data) {
+ task_set_64Bit_data(new_task);
+ }
+
new_task->all_image_info_addr = (mach_vm_address_t)0;
new_task->all_image_info_size = (mach_vm_size_t)0;
}
bzero(new_task->coalition, sizeof(new_task->coalition));
- for (int i = 0; i < COALITION_NUM_TYPES; i++)
+ for (int i = 0; i < COALITION_NUM_TYPES; i++) {
queue_chain_init(new_task->task_coalition[i]);
+ }
/* Allocate I/O Statistics */
- new_task->task_io_stats = (io_stat_info_t)kalloc(sizeof(struct io_stat_info));
+ new_task->task_io_stats = kheap_alloc(KHEAP_DATA_BUFFERS,
+ sizeof(struct io_stat_info), Z_WAITOK | Z_ZERO);
assert(new_task->task_io_stats != NULL);
- bzero(new_task->task_io_stats, sizeof(struct io_stat_info));
- bzero(&(new_task->cpu_time_qos_stats), sizeof(struct _cpu_time_qos_stats));
+ bzero(&(new_task->cpu_time_eqos_stats), sizeof(new_task->cpu_time_eqos_stats));
+ bzero(&(new_task->cpu_time_rqos_stats), sizeof(new_task->cpu_time_rqos_stats));
bzero(&new_task->extmod_statistics, sizeof(new_task->extmod_statistics));
/* Initialize to zero for standard fork/spawn case */
new_task->total_user_time = 0;
new_task->total_system_time = 0;
- new_task->faults = 0;
+ new_task->total_ptime = 0;
+ new_task->total_runnable_time = 0;
new_task->pageins = 0;
new_task->cow_faults = 0;
new_task->messages_sent = 0;
new_task->c_switch = 0;
new_task->p_switch = 0;
new_task->ps_switch = 0;
+ new_task->decompressions = 0;
new_task->low_mem_notified_warn = 0;
new_task->low_mem_notified_critical = 0;
new_task->purged_memory_warn = 0;
new_task->purged_memory_critical = 0;
new_task->low_mem_privileged_listener = 0;
+ new_task->memlimit_is_active = 0;
+ new_task->memlimit_is_fatal = 0;
+ new_task->memlimit_active_exc_resource = 0;
+ new_task->memlimit_inactive_exc_resource = 0;
new_task->task_timer_wakeups_bin_1 = 0;
new_task->task_timer_wakeups_bin_2 = 0;
new_task->task_gpu_ns = 0;
- new_task->task_immediate_writes = 0;
- new_task->task_deferred_writes = 0;
- new_task->task_invalidated_writes = 0;
- new_task->task_metadata_writes = 0;
+ new_task->task_writes_counters_internal.task_immediate_writes = 0;
+ new_task->task_writes_counters_internal.task_deferred_writes = 0;
+ new_task->task_writes_counters_internal.task_invalidated_writes = 0;
+ new_task->task_writes_counters_internal.task_metadata_writes = 0;
+ new_task->task_writes_counters_external.task_immediate_writes = 0;
+ new_task->task_writes_counters_external.task_deferred_writes = 0;
+ new_task->task_writes_counters_external.task_invalidated_writes = 0;
+ new_task->task_writes_counters_external.task_metadata_writes = 0;
+#if CONFIG_PHYS_WRITE_ACCT
+ new_task->task_fs_metadata_writes = 0;
+#endif /* CONFIG_PHYS_WRITE_ACCT */
+
new_task->task_energy = 0;
+#if MONOTONIC
+ memset(&new_task->task_monotonic, 0, sizeof(new_task->task_monotonic));
+#endif /* MONOTONIC */
}
/* TODO: assert that new_task will be PID 1 (launchd) */
coalitions_adopt_init_task(new_task);
}
+ /*
+ * on exec, we need to transfer the coalition roles from the
+ * parent task to the exec copy task.
+ */
+ if (parent_task && (t_procflags & TPF_EXEC_COPY)) {
+ int coal_roles[COALITION_NUM_TYPES];
+ task_coalition_roles(parent_task, coal_roles);
+ (void)coalitions_set_roles(new_task->coalition, new_task, coal_roles);
+ }
} else {
coalitions_adopt_corpse_task(new_task);
}
new_task->dispatchqueue_offset = parent_task->dispatchqueue_offset;
}
- if (vm_backing_store_low && parent_task != NULL)
- new_task->priv_flags |= (parent_task->priv_flags&VM_BACKING_STORE_PRIV);
-
+ new_task->task_can_transfer_memory_ownership = FALSE;
new_task->task_volatile_objects = 0;
new_task->task_nonvolatile_objects = 0;
- new_task->task_purgeable_disowning = FALSE;
- new_task->task_purgeable_disowned = FALSE;
+ new_task->task_objects_disowning = FALSE;
+ new_task->task_objects_disowned = FALSE;
+ new_task->task_owned_objects = 0;
+ queue_init(&new_task->task_objq);
+
+#if CONFIG_FREEZE
+ queue_init(&new_task->task_frozen_cseg_q);
+#endif /* CONFIG_FREEZE */
+ task_objq_lock_init(new_task);
+
+#if __arm64__
+ new_task->task_legacy_footprint = FALSE;
+ new_task->task_extra_footprint_limit = FALSE;
+ new_task->task_ios13extended_footprint_limit = FALSE;
+#endif /* __arm64__ */
+ new_task->task_region_footprint = FALSE;
+ new_task->task_has_crossed_thread_limit = FALSE;
+ new_task->task_thread_limit = 0;
#if CONFIG_SECLUDED_MEMORY
new_task->task_can_use_secluded_mem = FALSE;
new_task->task_could_use_secluded_mem = FALSE;
new_task->task_could_also_use_secluded_mem = FALSE;
+ new_task->task_suppressed_secluded = FALSE;
#endif /* CONFIG_SECLUDED_MEMORY */
- queue_init(&new_task->io_user_clients);
+ /*
+ * t_flags is set up above. But since we don't
+ * support darkwake mode being set that way
+ * currently, we clear it out here explicitly.
+ */
+ new_task->t_flags &= ~(TF_DARKWAKE_MODE);
+
+ queue_init(&new_task->io_user_clients);
+ new_task->loadTag = 0;
ipc_task_enable(new_task);
lck_mtx_lock(&tasks_threads_lock);
queue_enter(&tasks, new_task, task_t, tasks);
tasks_count++;
- if (tasks_suspend_state) {
- task_suspend_internal(new_task);
- }
+ if (tasks_suspend_state) {
+ task_suspend_internal(new_task);
+ }
lck_mtx_unlock(&tasks_threads_lock);
*child_task = new_task;
- return(KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
to_task->total_user_time = from_task->total_user_time;
to_task->total_system_time = from_task->total_system_time;
- to_task->faults = from_task->faults;
+ to_task->total_ptime = from_task->total_ptime;
+ to_task->total_runnable_time = from_task->total_runnable_time;
+ counter_add(&to_task->faults, counter_load(&from_task->faults));
to_task->pageins = from_task->pageins;
to_task->cow_faults = from_task->cow_faults;
+ to_task->decompressions = from_task->decompressions;
to_task->messages_sent = from_task->messages_sent;
to_task->messages_received = from_task->messages_received;
to_task->syscalls_mach = from_task->syscalls_mach;
to_task->purged_memory_critical = from_task->purged_memory_critical;
to_task->low_mem_privileged_listener = from_task->low_mem_privileged_listener;
*to_task->task_io_stats = *from_task->task_io_stats;
- to_task->cpu_time_qos_stats = from_task->cpu_time_qos_stats;
+ to_task->cpu_time_eqos_stats = from_task->cpu_time_eqos_stats;
+ to_task->cpu_time_rqos_stats = from_task->cpu_time_rqos_stats;
to_task->task_timer_wakeups_bin_1 = from_task->task_timer_wakeups_bin_1;
to_task->task_timer_wakeups_bin_2 = from_task->task_timer_wakeups_bin_2;
to_task->task_gpu_ns = from_task->task_gpu_ns;
- to_task->task_immediate_writes = from_task->task_immediate_writes;
- to_task->task_deferred_writes = from_task->task_deferred_writes;
- to_task->task_invalidated_writes = from_task->task_invalidated_writes;
- to_task->task_metadata_writes = from_task->task_metadata_writes;
+ to_task->task_writes_counters_internal.task_immediate_writes = from_task->task_writes_counters_internal.task_immediate_writes;
+ to_task->task_writes_counters_internal.task_deferred_writes = from_task->task_writes_counters_internal.task_deferred_writes;
+ to_task->task_writes_counters_internal.task_invalidated_writes = from_task->task_writes_counters_internal.task_invalidated_writes;
+ to_task->task_writes_counters_internal.task_metadata_writes = from_task->task_writes_counters_internal.task_metadata_writes;
+ to_task->task_writes_counters_external.task_immediate_writes = from_task->task_writes_counters_external.task_immediate_writes;
+ to_task->task_writes_counters_external.task_deferred_writes = from_task->task_writes_counters_external.task_deferred_writes;
+ to_task->task_writes_counters_external.task_invalidated_writes = from_task->task_writes_counters_external.task_invalidated_writes;
+ to_task->task_writes_counters_external.task_metadata_writes = from_task->task_writes_counters_external.task_metadata_writes;
+#if CONFIG_PHYS_WRITE_ACCT
+ to_task->task_fs_metadata_writes = from_task->task_fs_metadata_writes;
+#endif /* CONFIG_PHYS_WRITE_ACCT */
to_task->task_energy = from_task->task_energy;
/* Skip ledger roll up for memory accounting entries */
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.sfi_wait_times[class_id]);
}
#endif
-#if CONFIG_BANK
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.cpu_time_billed_to_me);
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.cpu_time_billed_to_others);
-#endif
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.physical_writes);
ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.logical_writes);
+ ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.energy_billed_to_me);
+ ledger_rollup_entry(to_task->ledger, from_task->ledger, task_ledgers.energy_billed_to_others);
}
int task_dropped_imp_count = 0;
*/
void
task_deallocate(
- task_t task)
+ task_t task)
{
ledger_amount_t credit, debit, interrupt_wakeups, platform_idle_wakeups;
- uint32_t refs;
+ os_ref_count_t refs;
- if (task == TASK_NULL)
- return;
+ if (task == TASK_NULL) {
+ return;
+ }
refs = task_deallocate_internal(task);
#if IMPORTANCE_INHERITANCE
- if (refs > 1)
- return;
-
if (refs == 1) {
/*
* If last ref potentially comes from the task's importance,
* disconnect it. But more task refs may be added before
* that completes, so wait for the reference to go to zero
- * naturually (it may happen on a recursive task_deallocate()
+ * naturally (it may happen on a recursive task_deallocate()
* from the ipc_importance_disconnect_task() call).
*/
- if (IIT_NULL != task->task_imp_base)
+ if (IIT_NULL != task->task_imp_base) {
ipc_importance_disconnect_task(task);
+ }
return;
}
-#else
- if (refs > 0)
- return;
#endif /* IMPORTANCE_INHERITANCE */
+ if (refs > 0) {
+ return;
+ }
+
+ /*
+ * The task should be dead at this point. Ensure other resources
+ * like threads, are gone before we trash the world.
+ */
+ assert(queue_empty(&task->threads));
+ assert(task->bsd_info == NULL);
+ assert(!is_active(task->itk_space));
+ assert(!task->active);
+ assert(task->active_thread_count == 0);
+
lck_mtx_lock(&tasks_threads_lock);
+ assert(terminated_tasks_count > 0);
queue_remove(&terminated_tasks, task, task_t, tasks);
terminated_tasks_count--;
lck_mtx_unlock(&tasks_threads_lock);
- /*
- * remove the reference on atm descriptor
- */
- task_atm_reset(task);
-
/*
* remove the reference on bank context
*/
task_bank_reset(task);
- if (task->task_io_stats)
- kfree(task->task_io_stats, sizeof(struct io_stat_info));
+ if (task->task_io_stats) {
+ kheap_free(KHEAP_DATA_BUFFERS, task->task_io_stats,
+ sizeof(struct io_stat_info));
+ }
/*
* Give the machine dependent code a chance
/* let iokit know */
iokit_task_terminate(task);
- if (task->affinity_space)
+ if (task->affinity_space) {
task_affinity_deallocate(task);
+ }
#if MACH_ASSERT
if (task->ledger != NULL &&
}
#endif /* MACH_ASSERT */
- vm_purgeable_disown(task);
- assert(task->task_purgeable_disowned);
+ vm_owned_objects_disown(task);
+ assert(task->task_objects_disowned);
if (task->task_volatile_objects != 0 ||
- task->task_nonvolatile_objects != 0) {
+ task->task_nonvolatile_objects != 0 ||
+ task->task_owned_objects != 0) {
panic("task_deallocate(%p): "
- "volatile_objects=%d nonvolatile_objects=%d\n",
- task,
- task->task_volatile_objects,
- task->task_nonvolatile_objects);
+ "volatile_objects=%d nonvolatile_objects=%d owned=%d\n",
+ task,
+ task->task_volatile_objects,
+ task->task_nonvolatile_objects,
+ task->task_owned_objects);
}
vm_map_deallocate(task->map);
is_release(task->itk_space);
+ if (task->restartable_ranges) {
+ restartable_ranges_release(task->restartable_ranges);
+ }
ledger_get_entries(task->ledger, task_ledgers.interrupt_wakeups,
- &interrupt_wakeups, &debit);
+ &interrupt_wakeups, &debit);
ledger_get_entries(task->ledger, task_ledgers.platform_idle_wakeups,
- &platform_idle_wakeups, &debit);
+ &platform_idle_wakeups, &debit);
#if defined(CONFIG_SCHED_MULTIQ)
sched_group_destroy(task->sched_group);
dead_task_statistics.task_timer_wakeups_bin_1 += task->task_timer_wakeups_bin_1;
dead_task_statistics.task_timer_wakeups_bin_2 += task->task_timer_wakeups_bin_2;
+ dead_task_statistics.total_ptime += task->total_ptime;
+ dead_task_statistics.total_pset_switches += task->ps_switch;
+ dead_task_statistics.task_gpu_ns += task->task_gpu_ns;
+ dead_task_statistics.task_energy += task->task_energy;
lck_spin_unlock(&dead_task_statistics_lock);
lck_mtx_destroy(&task->lock, &task_lck_grp);
btlog_remove_entries_for_element(task_ref_btlog, task);
#endif
+ counter_free(&task->faults);
+
#if CONFIG_COALITIONS
task_release_coalitions(task);
#endif /* CONFIG_COALITIONS */
#if MACH_BSD
/* clean up collected information since last reference to task is gone */
if (task->corpse_info) {
- task_crashinfo_destroy(task->corpse_info, RELEASE_CORPSE_REF);
+ void *corpse_info_kernel = kcdata_memory_get_begin_addr(task->corpse_info);
+ task_crashinfo_destroy(task->corpse_info);
task->corpse_info = NULL;
+ if (corpse_info_kernel) {
+ kheap_free(KHEAP_DATA_BUFFERS, corpse_info_kernel,
+ CORPSEINFO_ALLOCATION_SIZE);
+ }
}
#endif
- if (task->corpse_info_kernel) {
- kfree(task->corpse_info_kernel, CORPSEINFO_ALLOCATION_SIZE);
- }
#if CONFIG_MACF
if (task->crash_label) {
- mac_exc_action_label_task_destroy(task);
+ mac_exc_free_label(task->crash_label);
+ task->crash_label = NULL;
}
#endif
+ assert(queue_empty(&task->task_objq));
+ task_objq_lock_destroy(task);
+
zfree(task_zone, task);
}
*/
void
task_name_deallocate(
- task_name_t task_name)
+ task_name_t task_name)
+{
+ return task_deallocate((task_t)task_name);
+}
+
+/*
+ * task_policy_set_deallocate:
+ *
+ * Drop a reference on a task type.
+ */
+void
+task_policy_set_deallocate(task_policy_set_t task_policy_set)
+{
+ return task_deallocate((task_t)task_policy_set);
+}
+
+/*
+ * task_policy_get_deallocate:
+ *
+ * Drop a reference on a task type.
+ */
+void
+task_policy_get_deallocate(task_policy_get_t task_policy_get)
+{
+ return task_deallocate((task_t)task_policy_get);
+}
+
+/*
+ * task_inspect_deallocate:
+ *
+ * Drop a task inspection reference.
+ */
+void
+task_inspect_deallocate(
+ task_inspect_t task_inspect)
+{
+ return task_deallocate((task_t)task_inspect);
+}
+
+/*
+ * task_read_deallocate:
+ *
+ * Drop a reference on task read port.
+ */
+void
+task_read_deallocate(
+ task_read_t task_read)
{
- return(task_deallocate((task_t)task_name));
+ return task_deallocate((task_t)task_read);
}
/*
*/
void
task_suspension_token_deallocate(
- task_suspension_token_t token)
+ task_suspension_token_t token)
{
- return(task_deallocate((task_t)token));
+ return task_deallocate((task_t)token);
}
* collect crash info from bsd and mach based data
*/
kern_return_t
-task_collect_crash_info(task_t task, struct proc *proc, int is_corpse_fork)
+task_collect_crash_info(
+ task_t task,
+#ifdef CONFIG_MACF
+ struct label *crash_label,
+#endif
+ int is_corpse_fork)
{
kern_return_t kr = KERN_SUCCESS;
mach_vm_offset_t crash_data_ptr = 0;
void *crash_data_kernel = NULL;
void *crash_data_kernel_release = NULL;
- int corpse_blob_kernel_alloc = (is_corpse_fork || unify_corpse_blob_alloc);
+#if CONFIG_MACF
+ struct label *label, *free_label;
+#endif
if (!corpses_enabled()) {
return KERN_NOT_SUPPORTED;
}
+#if CONFIG_MACF
+ free_label = label = mac_exc_create_label();
+#endif
+
task_lock(task);
assert(is_corpse_fork || task->bsd_info != NULL);
if (task->corpse_info == NULL && (is_corpse_fork || task->bsd_info != NULL)) {
#if CONFIG_MACF
- /* Update the corpse label, used by the exception delivery mac hook */
- mac_exc_action_label_task_update(task, proc);
+ /* Set the crash label, used by the exception delivery mac hook */
+ free_label = task->crash_label; // Most likely NULL.
+ task->crash_label = label;
+ mac_exc_update_task_crash_label(task, crash_label);
#endif
task_unlock(task);
- if (!corpse_blob_kernel_alloc) {
- /* map crash data memory in task's vm map */
- kr = mach_vm_allocate(task->map, &crash_data_ptr, size, (VM_MAKE_TAG(VM_MEMORY_CORPSEINFO) | VM_FLAGS_ANYWHERE));
- } else {
- crash_data_kernel = (void *) kalloc(CORPSEINFO_ALLOCATION_SIZE);
- if (crash_data_kernel == 0)
- kr = KERN_RESOURCE_SHORTAGE;
- bzero(crash_data_kernel, CORPSEINFO_ALLOCATION_SIZE);
- crash_data_ptr = (mach_vm_offset_t) crash_data_kernel;
- }
- if (kr != KERN_SUCCESS)
+ crash_data_kernel = kheap_alloc(KHEAP_DATA_BUFFERS,
+ CORPSEINFO_ALLOCATION_SIZE, Z_WAITOK | Z_ZERO);
+ if (crash_data_kernel == NULL) {
+ kr = KERN_RESOURCE_SHORTAGE;
goto out_no_lock;
+ }
+ crash_data_ptr = (mach_vm_offset_t) crash_data_kernel;
/* Do not get a corpse ref for corpse fork */
- crash_data = task_crashinfo_alloc_init((mach_vm_address_t)crash_data_ptr, size, is_corpse_fork ? !GET_CORPSE_REF : GET_CORPSE_REF, corpse_blob_kernel_alloc ? KCFLAG_USE_MEMCOPY: KCFLAG_USE_COPYOUT);
+ crash_data = task_crashinfo_alloc_init((mach_vm_address_t)crash_data_ptr, size,
+ is_corpse_fork ? 0 : CORPSE_CRASHINFO_HAS_REF,
+ KCFLAG_USE_MEMCOPY);
if (crash_data) {
task_lock(task);
crash_data_release = task->corpse_info;
- crash_data_kernel_release = task->corpse_info_kernel;
+ crash_data_kernel_release = kcdata_memory_get_begin_addr(crash_data_release);
task->corpse_info = crash_data;
- task->corpse_info_kernel = crash_data_kernel;
task_unlock(task);
kr = KERN_SUCCESS;
} else {
- /* if failed to create corpse info, free the mapping */
- if (!corpse_blob_kernel_alloc) {
- if (KERN_SUCCESS != mach_vm_deallocate(task->map, crash_data_ptr, size)) {
- printf("mach_vm_deallocate failed to clear corpse_data for pid %d.\n", task_pid(task));
- }
- } else {
- kfree(crash_data_kernel, CORPSEINFO_ALLOCATION_SIZE);
- }
+ kheap_free(KHEAP_DATA_BUFFERS, crash_data_kernel,
+ CORPSEINFO_ALLOCATION_SIZE);
kr = KERN_FAILURE;
}
if (crash_data_release != NULL) {
- task_crashinfo_destroy(crash_data_release, is_corpse_fork ? !RELEASE_CORPSE_REF : RELEASE_CORPSE_REF);
+ task_crashinfo_destroy(crash_data_release);
}
if (crash_data_kernel_release != NULL) {
- kfree(crash_data_kernel_release, CORPSEINFO_ALLOCATION_SIZE);
+ kheap_free(KHEAP_DATA_BUFFERS, crash_data_kernel_release,
+ CORPSEINFO_ALLOCATION_SIZE);
}
} else {
task_unlock(task);
}
out_no_lock:
+#if CONFIG_MACF
+ if (free_label != NULL) {
+ mac_exc_free_label(free_label);
+ }
+#endif
return kr;
}
* Makes outcall to registered host port for a corpse.
*/
kern_return_t
-task_deliver_crash_notification(task_t task, thread_t thread, mach_exception_data_type_t subcode)
+task_deliver_crash_notification(
+ task_t task,
+ thread_t thread,
+ exception_type_t etype,
+ mach_exception_subcode_t subcode)
{
kcdata_descriptor_t crash_info = task->corpse_info;
thread_t th_iter = NULL;
mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
ipc_port_t task_port, old_notify;
- if (crash_info == NULL)
+ if (crash_info == NULL) {
return KERN_FAILURE;
+ }
task_lock(task);
if (task_is_a_corpse_fork(task)) {
- /* Populate code with EXC_RESOURCE for corpse fork */
- code[0] = EXC_RESOURCE;
+ /* Populate code with EXC_{RESOURCE,GUARD} for corpse fork */
+ code[0] = etype;
code[1] = subcode;
- } else if (unify_corpse_blob_alloc) {
+ } else {
/* Populate code with EXC_CRASH for corpses */
code[0] = EXC_CRASH;
code[1] = 0;
if (corpse_for_fatal_memkill) {
code[1] = subcode;
}
- } else {
- /* Populate code with address and length for EXC_CRASH */
- code[0] = crash_info->kcd_addr_begin;
- code[1] = crash_info->kcd_length;
}
+
queue_iterate(&task->threads, th_iter, thread_t, task_threads)
{
if (th_iter->corpse_dup == FALSE) {
task_reference(task);
task_port = convert_task_to_port(task);
ip_lock(task_port);
- assert(ip_active(task_port));
+ require_ip_active(task_port);
ipc_port_nsrequest(task_port, task_port->ip_mscount, ipc_port_make_sonce_locked(task_port), &old_notify);
/* port unlocked */
assert(IP_NULL == old_notify);
kern_return_t
task_terminate(
- task_t task)
+ task_t task)
{
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (task->bsd_info)
- return (KERN_FAILURE);
+ if (task->bsd_info) {
+ return KERN_FAILURE;
+ }
- return (task_terminate_internal(task));
+ return task_terminate_internal(task);
}
#if MACH_ASSERT
static void
__unused task_partial_reap(task_t task, __unused int pid)
{
- unsigned int reclaimed_resident = 0;
- unsigned int reclaimed_compressed = 0;
+ unsigned int reclaimed_resident = 0;
+ unsigned int reclaimed_compressed = 0;
uint64_t task_page_count;
task_page_count = (get_task_phys_footprint(task) / PAGE_SIZE_64);
KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, VM_MAP_PARTIAL_REAP) | DBG_FUNC_START),
- pid, task_page_count, 0, 0, 0);
+ pid, task_page_count, 0, 0, 0);
vm_map_partial_reap(task->map, &reclaimed_resident, &reclaimed_compressed);
- KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, VM_MAP_PARTIAL_REAP) | DBG_FUNC_END),
- pid, reclaimed_resident, reclaimed_compressed, 0, 0);
+ KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, VM_MAP_PARTIAL_REAP) | DBG_FUNC_END),
+ pid, reclaimed_resident, reclaimed_compressed, 0, 0);
}
kern_return_t
thread_t self_thread;
(void) self_thread;
wait_interrupt_t wsave;
+#if CONFIG_MACF
+ struct label *crash_label = NULL;
+#endif
assert(task != kernel_task);
assert(task == current_task());
assert(!task_is_a_corpse(task));
- kr = task_collect_crash_info(task, (struct proc*)task->bsd_info, FALSE);
+#if CONFIG_MACF
+ crash_label = mac_exc_create_label_for_proc((struct proc*)task->bsd_info);
+#endif
+
+ kr = task_collect_crash_info(task,
+#if CONFIG_MACF
+ crash_label,
+#endif
+ FALSE);
if (kr != KERN_SUCCESS) {
- return kr;
+ goto out;
}
self_thread = current_thread();
task_set_corpse_pending_report(task);
task_set_corpse(task);
+ task->crashed_thread_id = thread_tid(self_thread);
kr = task_start_halt_locked(task, TRUE);
assert(kr == KERN_SUCCESS);
ipc_task_reset(task);
/* Remove the naked send right for task port, needed to arm no sender notification */
- task_set_special_port(task, TASK_KERNEL_PORT, IPC_PORT_NULL);
+ task_set_special_port_internal(task, TASK_KERNEL_PORT, IPC_PORT_NULL);
ipc_task_enable(task);
task_unlock(task);
/* Add it to global corpse task list */
task_add_to_corpse_task_list(task);
-
+
task_start_halt(task);
- thread_terminate_internal(self_thread);
+ thread_terminate_internal(self_thread, TH_TERMINATE_OPTION_NONE);
(void) thread_interrupt_level(wsave);
assert(task->halting == TRUE);
+
+out:
+#if CONFIG_MACF
+ mac_exc_free_label(crash_label);
+#endif
return kr;
}
{
thread_mtx_lock(th_iter);
th_iter->inspection = FALSE;
+ ipc_thread_disable(th_iter);
thread_mtx_unlock(th_iter);
}
ipc_port_t port = notification->not_header.msgh_remote_port;
task_t task;
- assert(ip_active(port));
- assert(IKOT_TASK == ip_kotype(port));
- task = (task_t) port->ip_kobject;
+ require_ip_active(port);
+ assert(IKOT_TASK_CONTROL == ip_kotype(port));
+ task = (task_t) ip_get_kobject(port);
assert(task_is_a_corpse(task));
task_terminate_internal(task);
}
+/*
+ * task_port_with_flavor_notify
+ *
+ * Called whenever the Mach port system detects no-senders on
+ * the task inspect or read port. These ports are allocated lazily and
+ * should be deallocated here when there are no senders remaining.
+ */
+void
+task_port_with_flavor_notify(mach_msg_header_t *msg)
+{
+ mach_no_senders_notification_t *notification = (void *)msg;
+ ipc_port_t port = notification->not_header.msgh_remote_port;
+ task_t task;
+ mach_task_flavor_t flavor;
+ ipc_kobject_type_t kotype;
+
+ ip_lock(port);
+ if (port->ip_srights > 0) {
+ ip_unlock(port);
+ return;
+ }
+ task = (task_t)ipc_kobject_get(port);
+ kotype = ip_kotype(port);
+ if (task != TASK_NULL) {
+ assert((IKOT_TASK_READ == kotype) || (IKOT_TASK_INSPECT == kotype));
+ task_reference_internal(task);
+ }
+ ip_unlock(port);
+
+ if (task == TASK_NULL) {
+ /* The task is exiting or disabled; it will eventually deallocate the port */
+ return;
+ }
+
+ if (kotype == IKOT_TASK_READ) {
+ flavor = TASK_FLAVOR_READ;
+ } else {
+ flavor = TASK_FLAVOR_INSPECT;
+ }
+
+ itk_lock(task);
+ ip_lock(port);
+ /*
+ * If the port is no longer active, then ipc_task_terminate() ran
+ * and destroyed the kobject already. Just deallocate the task
+ * ref we took and go away.
+ *
+ * It is also possible that several nsrequests are in flight,
+ * only one shall NULL-out the port entry, and this is the one
+ * that gets to dealloc the port.
+ *
+ * Check for a stale no-senders notification. A call to any function
+ * that vends out send rights to this port could resurrect it between
+ * this notification being generated and actually being handled here.
+ */
+ if (!ip_active(port) ||
+ task->itk_task_ports[flavor] != port ||
+ port->ip_srights > 0) {
+ ip_unlock(port);
+ itk_unlock(task);
+ task_deallocate(task);
+ return;
+ }
+
+ assert(task->itk_task_ports[flavor] == port);
+ task->itk_task_ports[flavor] = IP_NULL;
+
+ ipc_kobject_set_atomically(port, IKO_NULL, IKOT_NONE);
+ ip_unlock(port);
+ itk_unlock(task);
+ task_deallocate(task);
+
+ ipc_port_dealloc_kernel(port);
+}
+
/*
* task_wait_till_threads_terminate_locked
*
*/
kern_return_t
task_duplicate_map_and_threads(
- task_t task,
- void *p,
- task_t new_task,
- thread_t *thread_ret,
- int is64bit,
- uint64_t **udata_buffer,
- int *size,
- int *num_udata)
+ task_t task,
+ void *p,
+ task_t new_task,
+ thread_t *thread_ret,
+ uint64_t **udata_buffer,
+ int *size,
+ int *num_udata)
{
kern_return_t kr = KERN_SUCCESS;
int active;
thread_t thread, self, thread_return = THREAD_NULL;
- thread_t new_thread = THREAD_NULL;
+ thread_t new_thread = THREAD_NULL, first_thread = THREAD_NULL;
thread_t *thread_array;
uint32_t active_thread_count = 0, array_count = 0, i;
vm_map_t oldmap;
*
* Skip it.
*/
+#if DEVELOPMENT || DEBUG
+ memorystatus_abort_vm_map_fork(task);
+#endif
task_resume_internal(task);
return KERN_FAILURE;
}
- /* Setup new task's vmmap, switch from parent task's map to it COW map */
- oldmap = new_task->map;
- new_task->map = vm_map_fork(new_task->ledger,
- task->map,
- (VM_MAP_FORK_SHARE_IF_INHERIT_NONE |
- VM_MAP_FORK_PRESERVE_PURGEABLE));
- vm_map_deallocate(oldmap);
-
- if (is64bit) {
- vm_map_set_64bit(get_task_map(new_task));
- } else {
- vm_map_set_32bit(get_task_map(new_task));
- }
-
- /* Get all the udata pointers from kqueue */
- est_knotes = proc_list_uptrs(p, NULL, 0);
- if (est_knotes > 0) {
- buf_size = (est_knotes + 32) * sizeof(uint64_t);
- buffer = (uint64_t *) kalloc(buf_size);
- num_knotes = proc_list_uptrs(p, buffer, buf_size);
- if (num_knotes > est_knotes + 32) {
- num_knotes = est_knotes + 32;
+ /* Check with VM if vm_map_fork is allowed for this task */
+ if (memorystatus_allowed_vm_map_fork(task)) {
+ /* Setup new task's vmmap, switch from parent task's map to it COW map */
+ oldmap = new_task->map;
+ new_task->map = vm_map_fork(new_task->ledger,
+ task->map,
+ (VM_MAP_FORK_SHARE_IF_INHERIT_NONE |
+ VM_MAP_FORK_PRESERVE_PURGEABLE |
+ VM_MAP_FORK_CORPSE_FOOTPRINT));
+ vm_map_deallocate(oldmap);
+
+ /* copy ledgers that impact the memory footprint */
+ vm_map_copy_footprint_ledgers(task, new_task);
+
+ /* Get all the udata pointers from kqueue */
+ est_knotes = kevent_proc_copy_uptrs(p, NULL, 0);
+ if (est_knotes > 0) {
+ buf_size = (est_knotes + 32) * sizeof(uint64_t);
+ buffer = kheap_alloc(KHEAP_DATA_BUFFERS, buf_size, Z_WAITOK);
+ num_knotes = kevent_proc_copy_uptrs(p, buffer, buf_size);
+ if (num_knotes > est_knotes + 32) {
+ num_knotes = est_knotes + 32;
+ }
}
}
active_thread_count = task->active_thread_count;
if (active_thread_count == 0) {
if (buffer != NULL) {
- kfree(buffer, buf_size);
+ kheap_free(KHEAP_DATA_BUFFERS, buffer, buf_size);
}
task_resume_internal(task);
return KERN_FAILURE;
}
- thread_array = (thread_t *) kalloc(sizeof(thread_t) * active_thread_count);
+ thread_array = kheap_alloc(KHEAP_TEMP,
+ sizeof(thread_t) * active_thread_count, Z_WAITOK);
/* Iterate all the threads and drop the task lock before calling thread_create_with_continuation */
task_lock(task);
task_unlock(task);
for (i = 0; i < array_count; i++) {
-
kr = thread_create_with_continuation(new_task, &new_thread, (thread_continue_t)thread_corpse_continue);
if (kr != KERN_SUCCESS) {
break;
/* Equivalent of current thread in corpse */
if (thread_array[i] == self) {
thread_return = new_thread;
+ new_task->crashed_thread_id = thread_tid(new_thread);
+ } else if (first_thread == NULL) {
+ first_thread = new_thread;
} else {
/* drop the extra ref returned by thread_create_with_continuation */
thread_deallocate(new_thread);
/* Copy thread name */
bsd_copythreadname(new_thread->uthread, thread_array[i]->uthread);
+ new_thread->thread_tag = thread_array[i]->thread_tag;
thread_copy_resource_info(new_thread, thread_array[i]);
}
+ /* return the first thread if we couldn't find the equivalent of current */
+ if (thread_return == THREAD_NULL) {
+ thread_return = first_thread;
+ } else if (first_thread != THREAD_NULL) {
+ /* drop the extra ref returned by thread_create_with_continuation */
+ thread_deallocate(first_thread);
+ }
+
task_resume_internal(task);
for (i = 0; i < array_count; i++) {
thread_deallocate(thread_array[i]);
}
- kfree(thread_array, sizeof(thread_t) * active_thread_count);
+ kheap_free(KHEAP_TEMP, thread_array, sizeof(thread_t) * active_thread_count);
if (kr == KERN_SUCCESS) {
*thread_ret = thread_return;
thread_deallocate(thread_return);
}
if (buffer != NULL) {
- kfree(buffer, buf_size);
+ kheap_free(KHEAP_DATA_BUFFERS, buffer, buf_size);
}
}
#if CONFIG_SECLUDED_MEMORY
extern void task_set_can_use_secluded_mem_locked(
- task_t task,
- boolean_t can_use_secluded_mem);
+ task_t task,
+ boolean_t can_use_secluded_mem);
#endif /* CONFIG_SECLUDED_MEMORY */
+#if MACH_ASSERT
+int debug4k_panic_on_terminate = 0;
+#endif /* MACH_ASSERT */
kern_return_t
task_terminate_internal(
- task_t task)
+ task_t task)
{
- thread_t thread, self;
- task_t self_task;
- boolean_t interrupt_save;
- int pid = 0;
+ thread_t thread, self;
+ task_t self_task;
+ boolean_t interrupt_save;
+ int pid = 0;
assert(task != kernel_task);
* Get the task locked and make sure that we are not racing
* with someone else trying to terminate us.
*/
- if (task == self_task)
+ if (task == self_task) {
task_lock(task);
- else
- if (task < self_task) {
+ } else if (task < self_task) {
task_lock(task);
task_lock(self_task);
- }
- else {
+ } else {
task_lock(self_task);
task_lock(task);
}
}
task->task_could_use_secluded_mem = FALSE;
task->task_could_also_use_secluded_mem = FALSE;
+
+ if (task->task_suppressed_secluded) {
+ stop_secluded_suppression(task);
+ }
#endif /* CONFIG_SECLUDED_MEMORY */
if (!task->active) {
* will get us to finalize the termination of ourselves.
*/
task_unlock(task);
- if (self_task != task)
+ if (self_task != task) {
task_unlock(self_task);
+ }
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
if (task_corpse_pending_report(task)) {
* will get us to finish the path to death
*/
task_unlock(task);
- if (self_task != task)
+ if (self_task != task) {
task_unlock(self_task);
+ }
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
- if (self_task != task)
+ if (self_task != task) {
task_unlock(self_task);
+ }
/*
* Make sure the current thread does not get aborted out of
* Terminate each thread in the task.
*/
queue_iterate(&task->threads, thread, thread_t, task_threads) {
- thread_terminate_internal(thread);
+ thread_terminate_internal(thread, TH_TERMINATE_OPTION_NONE);
}
#ifdef MACH_BSD
task_unlock(task);
proc_set_task_policy(task, TASK_POLICY_ATTRIBUTE,
- TASK_POLICY_TERMINATED, TASK_POLICY_ENABLE);
+ TASK_POLICY_TERMINATED, TASK_POLICY_ENABLE);
- /* Early object reap phase */
+ /* Early object reap phase */
// PR-17045188: Revisit implementation
// task_partial_reap(task, pid);
+#if CONFIG_TASKWATCH
+ /*
+ * remove all task watchers
+ */
+ task_removewatchers(task);
+
+#endif /* CONFIG_TASKWATCH */
/*
* Destroy all synchronizers owned by the task.
*/
task_synchronizer_destroy_all(task);
+ /*
+ * Clear the watchport boost on the task.
+ */
+ task_remove_turnstile_watchports(task);
+
/*
* Destroy the IPC space, leaving just a reference for it.
*/
#if 00
/* if some ledgers go negative on tear-down again... */
ledger_disable_panic_on_negative(task->map->pmap->ledger,
- task_ledgers.phys_footprint);
+ task_ledgers.phys_footprint);
ledger_disable_panic_on_negative(task->map->pmap->ledger,
- task_ledgers.internal);
+ task_ledgers.internal);
ledger_disable_panic_on_negative(task->map->pmap->ledger,
- task_ledgers.internal_compressed);
+ task_ledgers.internal_compressed);
ledger_disable_panic_on_negative(task->map->pmap->ledger,
- task_ledgers.iokit_mapped);
+ task_ledgers.iokit_mapped);
ledger_disable_panic_on_negative(task->map->pmap->ledger,
- task_ledgers.alternate_accounting);
+ task_ledgers.alternate_accounting);
ledger_disable_panic_on_negative(task->map->pmap->ledger,
- task_ledgers.alternate_accounting_compressed);
+ task_ledgers.alternate_accounting_compressed);
#endif
/*
vm_map_disable_hole_optimization(task->map);
vm_map_unlock(task->map);
- vm_map_remove(task->map,
- task->map->min_offset,
- task->map->max_offset,
- /* no unnesting on final cleanup: */
- VM_MAP_REMOVE_NO_UNNESTING);
-
- /* release our shared region */
- vm_shared_region_set(task, NULL);
-
-
#if MACH_ASSERT
/*
* Identify the pmap's process, in case the pmap ledgers drift
char procname[17];
if (task->bsd_info && !task_is_exec_copy(task)) {
pid = proc_pid(task->bsd_info);
- proc_name_kdp(task, procname, sizeof (procname));
+ proc_name_kdp(task, procname, sizeof(procname));
} else {
pid = 0;
- strlcpy(procname, "<unknown>", sizeof (procname));
+ strlcpy(procname, "<unknown>", sizeof(procname));
}
pmap_set_process(task->map->pmap, pid, procname);
+ if (vm_map_page_shift(task->map) < (int)PAGE_SHIFT) {
+ DEBUG4K_LIFE("map %p procname: %s\n", task->map, procname);
+ if (debug4k_panic_on_terminate) {
+ panic("DEBUG4K: %s:%d %d[%s] map %p\n", __FUNCTION__, __LINE__, pid, procname, task->map);
+ }
+ }
#endif /* MACH_ASSERT */
+ vm_map_terminate(task->map);
+
+ /* release our shared region */
+ vm_shared_region_set(task, NULL);
+
+#if __has_feature(ptrauth_calls)
+ task_set_shared_region_id(task, NULL);
+#endif /* __has_feature(ptrauth_calls) */
+
lck_mtx_lock(&tasks_threads_lock);
queue_remove(&tasks, task, task_t, tasks);
queue_enter(&terminated_tasks, task, task_t, tasks);
*/
thread_interrupt_level(interrupt_save);
-#if KPERF
+#if KPC
/* force the task to release all ctrs */
- if (task->t_chud & TASK_KPC_FORCED_ALL_CTRS)
+ if (task->t_kpc & TASK_KPC_FORCED_ALL_CTRS) {
kpc_force_all_ctrs(task, 0);
-#endif
+ }
+#endif /* KPC */
#if CONFIG_COALITIONS
/*
coalitions_remove_task(task);
#endif
+#if CONFIG_FREEZE
+ extern int vm_compressor_available;
+ if (VM_CONFIG_FREEZER_SWAP_IS_ACTIVE && vm_compressor_available) {
+ task_disown_frozen_csegs(task);
+ assert(queue_empty(&task->task_frozen_cseg_q));
+ }
+#endif /* CONFIG_FREEZE */
+
/*
* Get rid of the task active reference on itself.
*/
task_deallocate(task);
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
void
/*
* task_start_halt:
*
- * Shut the current task down (except for the current thread) in
+ * Shut the current task down (except for the current thread) in
* preparation for dramatic changes to the task (probably exec).
* We hold the task and mark all other threads in the task for
* termination.
self = current_thread();
- if (task != self->task && !task_is_a_corpse_fork(task))
- return (KERN_INVALID_ARGUMENT);
+ if (task != self->task && !task_is_a_corpse_fork(task)) {
+ return KERN_INVALID_ARGUMENT;
+ }
if (task->halting || !task->active || !self->active) {
/*
* so that we run our AST special handler to terminate
* ourselves.
*/
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
task->halting = TRUE;
thread->inspection = TRUE;
thread_mtx_unlock(thread);
}
- if (thread != self)
- thread_terminate_internal(thread);
+ if (thread != self) {
+ thread_terminate_internal(thread, TH_TERMINATE_OPTION_NONE);
+ }
}
task->dispatchqueue_offset = dispatchqueue_offset;
* getting a new one.
*/
vm_map_remove(task->map, task->map->min_offset,
- task->map->max_offset,
- /* no unnesting on final cleanup: */
- VM_MAP_REMOVE_NO_UNNESTING);
+ task->map->max_offset,
+ /*
+ * Final cleanup:
+ * + no unnesting
+ * + remove immutable mappings
+ * + allow gaps in the range
+ */
+ (VM_MAP_REMOVE_NO_UNNESTING |
+ VM_MAP_REMOVE_IMMUTABLE |
+ VM_MAP_REMOVE_GAPS_OK));
/*
* Kick out any IOKitUser handles to the task. At best they're stale,
* This is a recursive-style suspension of the task, a count of
* suspends is maintained.
*
- * CONDITIONS: the task is locked and active.
+ * CONDITIONS: the task is locked and active.
*/
void
task_hold_locked(
- task_t task)
+ task_t task)
{
- thread_t thread;
+ thread_t thread;
assert(task->active);
- if (task->suspend_count++ > 0)
+ if (task->suspend_count++ > 0) {
return;
+ }
+
+ if (task->bsd_info) {
+ workq_proc_suspended(task->bsd_info);
+ }
/*
* Iterate through all the threads and hold them.
*
* Same as the internal routine above, except that is must lock
* and verify that the task is active. This differs from task_suspend
- * in that it places a kernel hold on the task rather than just a
+ * in that it places a kernel hold on the task rather than just a
* user-level hold. This keeps users from over resuming and setting
* it running out from under the kernel.
*
- * CONDITIONS: the caller holds a reference on the task
+ * CONDITIONS: the caller holds a reference on the task
*/
kern_return_t
task_hold(
- task_t task)
+ task_t task)
{
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
task_lock(task);
if (!task->active) {
task_unlock(task);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
task_hold_locked(task);
task_unlock(task);
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
kern_return_t
task_wait(
- task_t task,
- boolean_t until_not_runnable)
+ task_t task,
+ boolean_t until_not_runnable)
{
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
task_lock(task);
if (!task->active) {
task_unlock(task);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
task_wait_locked(task, until_not_runnable);
task_unlock(task);
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
*/
void
task_wait_locked(
- task_t task,
- boolean_t until_not_runnable)
+ task_t task,
+ boolean_t until_not_runnable)
{
- thread_t thread, self;
+ thread_t thread, self;
assert(task->active);
assert(task->suspend_count > 0);
* the task.
*/
queue_iterate(&task->threads, thread, thread_t, task_threads) {
- if (thread != self)
+ if (thread != self) {
thread_wait(thread, until_not_runnable);
+ }
}
}
+boolean_t
+task_is_app_suspended(task_t task)
+{
+ return task->pidsuspended;
+}
+
/*
* task_release_locked:
*
* Release a kernel hold on a task.
*
- * CONDITIONS: the task is locked and active
+ * CONDITIONS: the task is locked and active
*/
void
task_release_locked(
- task_t task)
+ task_t task)
{
- thread_t thread;
+ thread_t thread;
assert(task->active);
assert(task->suspend_count > 0);
- if (--task->suspend_count > 0)
+ if (--task->suspend_count > 0) {
return;
+ }
+
+ if (task->bsd_info) {
+ workq_proc_resumed(task->bsd_info);
+ }
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread_mtx_lock(thread);
* Same as the internal routine above, except that it must lock
* and verify that the task is active.
*
- * CONDITIONS: The caller holds a reference to the task
+ * CONDITIONS: The caller holds a reference to the task
*/
kern_return_t
task_release(
- task_t task)
+ task_t task)
{
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
task_lock(task);
if (!task->active) {
task_unlock(task);
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
task_release_locked(task);
task_unlock(task);
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
-kern_return_t
-task_threads(
- task_t task,
- thread_act_array_t *threads_out,
- mach_msg_type_number_t *count)
+static kern_return_t
+task_threads_internal(
+ task_t task,
+ thread_act_array_t *threads_out,
+ mach_msg_type_number_t *count,
+ mach_thread_flavor_t flavor)
{
- mach_msg_type_number_t actual;
- thread_t *thread_list;
- thread_t thread;
- vm_size_t size, size_needed;
- void *addr;
- unsigned int i, j;
-
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ mach_msg_type_number_t actual;
+ thread_t *thread_list;
+ thread_t thread;
+ vm_size_t size, size_needed;
+ void *addr;
+ unsigned int i, j;
size = 0; addr = NULL;
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ assert(flavor <= THREAD_FLAVOR_INSPECT);
+
for (;;) {
task_lock(task);
if (!task->active) {
task_unlock(task);
- if (size != 0)
+ if (size != 0) {
kfree(addr, size);
+ }
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
actual = task->thread_count;
/* do we have the memory we need? */
- size_needed = actual * sizeof (mach_port_t);
- if (size_needed <= size)
+ size_needed = actual * sizeof(mach_port_t);
+ if (size_needed <= size) {
break;
+ }
/* unlock the task and allocate more memory */
task_unlock(task);
- if (size != 0)
+ if (size != 0) {
kfree(addr, size);
+ }
assert(size_needed > 0);
size = size_needed;
addr = kalloc(size);
- if (addr == 0)
- return (KERN_RESOURCE_SHORTAGE);
+ if (addr == 0) {
+ return KERN_RESOURCE_SHORTAGE;
+ }
}
/* OK, have memory and the task is locked & active */
i = j = 0;
for (thread = (thread_t)queue_first(&task->threads); i < actual;
- ++i, thread = (thread_t)queue_next(&thread->task_threads)) {
+ ++i, thread = (thread_t)queue_next(&thread->task_threads)) {
thread_reference_internal(thread);
thread_list[j++] = thread;
}
assert(queue_end(&task->threads, (queue_entry_t)thread));
actual = j;
- size_needed = actual * sizeof (mach_port_t);
+ size_needed = actual * sizeof(mach_port_t);
/* can unlock task now that we've got the thread refs */
task_unlock(task);
*threads_out = NULL;
*count = 0;
- if (size != 0)
+ if (size != 0) {
kfree(addr, size);
- }
- else {
+ }
+ } else {
/* if we allocated too much, must copy */
if (size_needed < size) {
newaddr = kalloc(size_needed);
if (newaddr == 0) {
- for (i = 0; i < actual; ++i)
+ for (i = 0; i < actual; ++i) {
thread_deallocate(thread_list[i]);
+ }
kfree(addr, size);
- return (KERN_RESOURCE_SHORTAGE);
+ return KERN_RESOURCE_SHORTAGE;
}
bcopy(addr, newaddr, size_needed);
/* do the conversion that Mig should handle */
- for (i = 0; i < actual; ++i)
- ((ipc_port_t *) thread_list)[i] = convert_thread_to_port(thread_list[i]);
+ switch (flavor) {
+ case THREAD_FLAVOR_CONTROL:
+ if (task == current_task()) {
+ for (i = 0; i < actual; ++i) {
+ ((ipc_port_t *) thread_list)[i] = convert_thread_to_port_pinned(thread_list[i]);
+ }
+ } else {
+ for (i = 0; i < actual; ++i) {
+ ((ipc_port_t *) thread_list)[i] = convert_thread_to_port(thread_list[i]);
+ }
+ }
+ break;
+ case THREAD_FLAVOR_READ:
+ for (i = 0; i < actual; ++i) {
+ ((ipc_port_t *) thread_list)[i] = convert_thread_read_to_port(thread_list[i]);
+ }
+ break;
+ case THREAD_FLAVOR_INSPECT:
+ for (i = 0; i < actual; ++i) {
+ ((ipc_port_t *) thread_list)[i] = convert_thread_inspect_to_port(thread_list[i]);
+ }
+ break;
+ }
}
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
-#define TASK_HOLD_NORMAL 0
-#define TASK_HOLD_PIDSUSPEND 1
-#define TASK_HOLD_LEGACY 2
-#define TASK_HOLD_LEGACY_ALL 3
-
-static kern_return_t
-place_task_hold (
- task_t task,
- int mode)
-{
- if (!task->active && !task_is_a_corpse(task)) {
- return (KERN_FAILURE);
- }
+kern_return_t
+task_threads(
+ task_t task,
+ thread_act_array_t *threads_out,
+ mach_msg_type_number_t *count)
+{
+ return task_threads_internal(task, threads_out, count, THREAD_FLAVOR_CONTROL);
+}
- /* Return success for corpse task */
- if (task_is_a_corpse(task)) {
- return KERN_SUCCESS;
- }
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_IPC,MACH_TASK_SUSPEND) | DBG_FUNC_NONE,
- task_pid(task), ((thread_t)queue_first(&task->threads))->thread_id,
- task->user_stop_count, task->user_stop_count + 1, 0);
+kern_return_t
+task_threads_from_user(
+ mach_port_t port,
+ thread_act_array_t *threads_out,
+ mach_msg_type_number_t *count)
+{
+ ipc_kobject_type_t kotype;
+ kern_return_t kr;
-#if MACH_ASSERT
- current_task()->suspends_outstanding++;
-#endif
+ task_t task = convert_port_to_task_check_type(port, &kotype, TASK_FLAVOR_INSPECT, FALSE);
- if (mode == TASK_HOLD_LEGACY)
- task->legacy_stop_count++;
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ switch (kotype) {
+ case IKOT_TASK_CONTROL:
+ kr = task_threads_internal(task, threads_out, count, THREAD_FLAVOR_CONTROL);
+ break;
+ case IKOT_TASK_READ:
+ kr = task_threads_internal(task, threads_out, count, THREAD_FLAVOR_READ);
+ break;
+ case IKOT_TASK_INSPECT:
+ kr = task_threads_internal(task, threads_out, count, THREAD_FLAVOR_INSPECT);
+ break;
+ default:
+ panic("strange kobject type");
+ break;
+ }
+
+ task_deallocate(task);
+ return kr;
+}
+
+#define TASK_HOLD_NORMAL 0
+#define TASK_HOLD_PIDSUSPEND 1
+#define TASK_HOLD_LEGACY 2
+#define TASK_HOLD_LEGACY_ALL 3
+
+static kern_return_t
+place_task_hold(
+ task_t task,
+ int mode)
+{
+ if (!task->active && !task_is_a_corpse(task)) {
+ return KERN_FAILURE;
+ }
+
+ /* Return success for corpse task */
+ if (task_is_a_corpse(task)) {
+ return KERN_SUCCESS;
+ }
+
+ KDBG_RELEASE(MACHDBG_CODE(DBG_MACH_IPC, MACH_TASK_SUSPEND),
+ task_pid(task),
+ task->thread_count > 0 ?((thread_t)queue_first(&task->threads))->thread_id : 0,
+ task->user_stop_count, task->user_stop_count + 1);
+
+#if MACH_ASSERT
+ current_task()->suspends_outstanding++;
+#endif
+
+ if (mode == TASK_HOLD_LEGACY) {
+ task->legacy_stop_count++;
+ }
if (task->user_stop_count++ > 0) {
/*
* If the stop count was positive, the task is
* already stopped and we can exit.
*/
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
*/
task_hold_locked(task);
task_wait_locked(task, FALSE);
-
- return (KERN_SUCCESS);
+
+ return KERN_SUCCESS;
}
static kern_return_t
-release_task_hold (
- task_t task,
- int mode)
+release_task_hold(
+ task_t task,
+ int mode)
{
boolean_t release = FALSE;
-
+
if (!task->active && !task_is_a_corpse(task)) {
- return (KERN_FAILURE);
+ return KERN_FAILURE;
}
/* Return success for corpse task */
if (task_is_a_corpse(task)) {
return KERN_SUCCESS;
}
-
+
if (mode == TASK_HOLD_PIDSUSPEND) {
- if (task->pidsuspended == FALSE) {
- return (KERN_FAILURE);
- }
- task->pidsuspended = FALSE;
+ if (task->pidsuspended == FALSE) {
+ return KERN_FAILURE;
+ }
+ task->pidsuspended = FALSE;
}
if (task->user_stop_count > (task->pidsuspended ? 1 : 0)) {
-
KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_IPC,MACH_TASK_RESUME) | DBG_FUNC_NONE,
+ MACHDBG_CODE(DBG_MACH_IPC, MACH_TASK_RESUME) | DBG_FUNC_NONE,
task_pid(task), ((thread_t)queue_first(&task->threads))->thread_id,
task->user_stop_count, mode, task->legacy_stop_count);
}
task->legacy_stop_count = 0;
} else {
- if (mode == TASK_HOLD_LEGACY && task->legacy_stop_count > 0)
+ if (mode == TASK_HOLD_LEGACY && task->legacy_stop_count > 0) {
task->legacy_stop_count--;
- if (--task->user_stop_count == 0)
+ }
+ if (--task->user_stop_count == 0) {
release = TRUE;
+ }
}
- }
- else {
- return (KERN_FAILURE);
+ } else {
+ return KERN_FAILURE;
}
/*
* Release the task if necessary.
*/
- if (release)
+ if (release) {
task_release_locked(task);
-
- return (KERN_SUCCESS);
+ }
+
+ return KERN_SUCCESS;
}
+boolean_t
+get_task_suspended(task_t task)
+{
+ return 0 != task->user_stop_count;
+}
/*
* task_suspend:
* unique send-once right).
*
* Conditions:
- * The caller holds a reference to the task
+ * The caller holds a reference to the task
*/
kern_return_t
task_suspend(
- task_t task)
+ task_t task)
{
- kern_return_t kr;
- mach_port_t port, send, old_notify;
- mach_port_name_t name;
-
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
-
- task_lock(task);
+ kern_return_t kr;
+ mach_port_t port;
+ mach_port_name_t name;
- /*
- * Claim a send right on the task resume port, and request a no-senders
- * notification on that port (if none outstanding).
- */
- if (task->itk_resume == IP_NULL) {
- task->itk_resume = ipc_port_alloc_kernel();
- if (!IP_VALID(task->itk_resume))
- panic("failed to create resume port");
- ipc_kobject_set(task->itk_resume, (ipc_kobject_t)task, IKOT_TASK_RESUME);
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
}
- port = task->itk_resume;
- ip_lock(port);
- assert(ip_active(port));
-
- send = ipc_port_make_send_locked(port);
- assert(IP_VALID(send));
-
- if (port->ip_nsrequest == IP_NULL) {
- ipc_port_nsrequest(port, port->ip_mscount, ipc_port_make_sonce_locked(port), &old_notify);
- assert(old_notify == IP_NULL);
- /* port unlocked */
- } else {
- ip_unlock(port);
- }
+ task_lock(task);
/*
* place a legacy hold on the task.
kr = place_task_hold(task, TASK_HOLD_LEGACY);
if (kr != KERN_SUCCESS) {
task_unlock(task);
- ipc_port_release_send(send);
return kr;
}
+ /*
+ * Claim a send right on the task resume port, and request a no-senders
+ * notification on that port (if none outstanding).
+ */
+ (void)ipc_kobject_make_send_lazy_alloc_port((ipc_port_t *) &task->itk_resume,
+ (ipc_kobject_t)task, IKOT_TASK_RESUME, IPC_KOBJECT_ALLOC_NONE, true,
+ OS_PTRAUTH_DISCRIMINATOR("task.itk_resume"));
+ port = task->itk_resume;
task_unlock(task);
/*
* but we'll look it up when calling a traditional resume. Any IPC operations that
* deallocate the send right will auto-release the suspension.
*/
- if ((kr = ipc_kmsg_copyout_object(current_task()->itk_space, (ipc_object_t)send,
- MACH_MSG_TYPE_MOVE_SEND, &name)) != KERN_SUCCESS) {
- printf("warning: %s(%d) failed to copyout suspension token for pid %d with error: %d\n",
- proc_name_address(current_task()->bsd_info), proc_pid(current_task()->bsd_info),
- task_pid(task), kr);
- return (kr);
+ if (IP_VALID(port)) {
+ kr = ipc_object_copyout(current_space(), ip_to_object(port),
+ MACH_MSG_TYPE_MOVE_SEND, IPC_OBJECT_COPYOUT_FLAGS_NONE,
+ NULL, NULL, &name);
+ } else {
+ kr = KERN_SUCCESS;
+ }
+ if (kr != KERN_SUCCESS) {
+ printf("warning: %s(%d) failed to copyout suspension "
+ "token for pid %d with error: %d\n",
+ proc_name_address(current_task()->bsd_info),
+ proc_pid(current_task()->bsd_info),
+ task_pid(task), kr);
}
- return (kr);
+ return kr;
}
/*
* task_resume:
* Release a user hold on a task.
- *
+ *
* Conditions:
* The caller holds a reference to the task
*/
-kern_return_t
+kern_return_t
task_resume(
- task_t task)
+ task_t task)
{
- kern_return_t kr;
+ kern_return_t kr;
mach_port_name_t resume_port_name;
- ipc_entry_t resume_port_entry;
- ipc_space_t space = current_task()->itk_space;
+ ipc_entry_t resume_port_entry;
+ ipc_space_t space = current_task()->itk_space;
- if (task == TASK_NULL || task == kernel_task )
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
+ }
/* release a legacy task hold */
task_lock(task);
is_write_lock(space);
if (is_active(space) && IP_VALID(task->itk_resume) &&
- ipc_hash_lookup(space, (ipc_object_t)task->itk_resume, &resume_port_name, &resume_port_entry) == TRUE) {
+ ipc_hash_lookup(space, ip_to_object(task->itk_resume), &resume_port_name, &resume_port_entry) == TRUE) {
/*
* We found a suspension token in the caller's IPC space. Release a send right to indicate that
* we are holding one less legacy hold on the task from this caller. If the release failed,
* go ahead and drop all the rights, as someone either already released our holds or the task
* is gone.
*/
- if (kr == KERN_SUCCESS)
+ if (kr == KERN_SUCCESS) {
ipc_right_dealloc(space, resume_port_name, resume_port_entry);
- else
+ } else {
ipc_right_destroy(space, resume_port_name, resume_port_entry, FALSE, 0);
+ }
/* space unlocked */
} else {
is_write_unlock(space);
- if (kr == KERN_SUCCESS)
+ if (kr == KERN_SUCCESS) {
printf("warning: %s(%d) performed out-of-band resume on pid %d\n",
- proc_name_address(current_task()->bsd_info), proc_pid(current_task()->bsd_info),
- task_pid(task));
+ proc_name_address(current_task()->bsd_info), proc_pid(current_task()->bsd_info),
+ task_pid(task));
+ }
}
return kr;
kern_return_t
task_suspend_internal(task_t task)
{
- kern_return_t kr;
-
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
+ kern_return_t kr;
+
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
+ }
task_lock(task);
kr = place_task_hold(task, TASK_HOLD_NORMAL);
task_unlock(task);
- return (kr);
+ return kr;
}
/*
*/
kern_return_t
task_suspend2(
- task_t task,
+ task_t task,
task_suspension_token_t *suspend_token)
{
- kern_return_t kr;
-
+ kern_return_t kr;
+
kr = task_suspend_internal(task);
if (kr != KERN_SUCCESS) {
*suspend_token = TASK_NULL;
- return (kr);
+ return kr;
}
/*
task_reference_internal(task);
*suspend_token = task;
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
*/
kern_return_t
task_resume_internal(
- task_suspension_token_t task)
+ task_suspension_token_t task)
{
kern_return_t kr;
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
+ }
task_lock(task);
kr = release_task_hold(task, TASK_HOLD_NORMAL);
task_unlock(task);
- return (kr);
+ return kr;
}
/*
*/
kern_return_t
task_resume2(
- task_suspension_token_t task)
+ task_suspension_token_t task)
{
kern_return_t kr;
kr = task_resume_internal(task);
task_suspension_token_deallocate(task);
- return (kr);
+ return kr;
}
boolean_t
task_suspension_notify(mach_msg_header_t *request_header)
{
- ipc_port_t port = (ipc_port_t) request_header->msgh_remote_port;
+ ipc_port_t port = request_header->msgh_remote_port;
task_t task = convert_port_to_task_suspension_token(port);
mach_msg_type_number_t not_count;
- if (task == TASK_NULL || task == kernel_task)
+ if (task == TASK_NULL || task == kernel_task) {
return TRUE; /* nothing to do */
-
+ }
switch (request_header->msgh_id) {
-
case MACH_NOTIFY_SEND_ONCE:
/* release the hold held by this specific send-once right */
task_lock(task);
task_lock(task);
ip_lock(port);
if (port->ip_mscount == not_count) {
-
/* release all the [remaining] outstanding legacy holds */
assert(port->ip_nsrequest == IP_NULL);
ip_unlock(port);
release_task_hold(task, TASK_HOLD_LEGACY_ALL);
task_unlock(task);
-
} else if (port->ip_nsrequest == IP_NULL) {
ipc_port_t old_notify;
return TRUE;
}
-kern_return_t
+static kern_return_t
task_pidsuspend_locked(task_t task)
{
kern_return_t kr;
task->pidsuspended = FALSE;
}
out:
- return(kr);
+ return kr;
}
* Suspends a task by placing a hold on its threads.
*
* Conditions:
- * The caller holds a reference to the task
+ * The caller holds a reference to the task
*/
kern_return_t
task_pidsuspend(
- task_t task)
+ task_t task)
{
- kern_return_t kr;
-
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
+ kern_return_t kr;
+
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
+ }
task_lock(task);
task_unlock(task);
- return (kr);
+ if ((KERN_SUCCESS == kr) && task->message_app_suspended) {
+ iokit_task_app_suspended_changed(task);
+ }
+
+ return kr;
}
/*
* task_pidresume:
* Resumes a previously suspended task.
- *
+ *
* Conditions:
* The caller holds a reference to the task
*/
-kern_return_t
+kern_return_t
task_pidresume(
- task_t task)
+ task_t task)
{
- kern_return_t kr;
+ kern_return_t kr;
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
+ }
task_lock(task);
-
+
#if CONFIG_FREEZE
while (task->changing_freeze_state) {
-
assert_wait((event_t)&task->changing_freeze_state, THREAD_UNINT);
task_unlock(task);
thread_block(THREAD_CONTINUE_NULL);
task_unlock(task);
+ if ((KERN_SUCCESS == kr) && task->message_app_suspended) {
+ iokit_task_app_suspended_changed(task);
+ }
+
#if CONFIG_FREEZE
task_lock(task);
- if (kr == KERN_SUCCESS)
+ if (kr == KERN_SUCCESS) {
task->frozen = FALSE;
+ }
task->changing_freeze_state = FALSE;
thread_wakeup(&task->changing_freeze_state);
-
+
task_unlock(task);
#endif
- return (kr);
+ return kr;
}
+os_refgrp_decl(static, task_watchports_refgrp, "task_watchports", NULL);
-#if DEVELOPMENT || DEBUG
-
-extern void IOSleep(int);
-
-kern_return_t
-task_disconnect_page_mappings(task_t task)
+/*
+ * task_add_turnstile_watchports:
+ * Setup watchports to boost the main thread of the task.
+ *
+ * Arguments:
+ * task: task being spawned
+ * thread: main thread of task
+ * portwatch_ports: array of watchports
+ * portwatch_count: number of watchports
+ *
+ * Conditions:
+ * Nothing locked.
+ */
+void
+task_add_turnstile_watchports(
+ task_t task,
+ thread_t thread,
+ ipc_port_t *portwatch_ports,
+ uint32_t portwatch_count)
{
- int n;
-
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
-
- /*
- * this function is used to strip all of the mappings from
- * the pmap for the specified task to force the task to
- * re-fault all of the pages it is actively using... this
- * allows us to approximate the true working set of the
- * specified task. We only engage if at least 1 of the
- * threads in the task is runnable, but we want to continuously
- * sweep (at least for a while - I've arbitrarily set the limit at
- * 100 sweeps to be re-looked at as we gain experience) to get a better
- * view into what areas within a page are being visited (as opposed to only
- * seeing the first fault of a page after the task becomes
- * runnable)... in the future I may
- * try to block until awakened by a thread in this task
- * being made runnable, but for now we'll periodically poll from the
- * user level debug tool driving the sysctl
- */
- for (n = 0; n < 100; n++) {
- thread_t thread;
- boolean_t runnable;
- boolean_t do_unnest;
- int page_count;
-
- runnable = FALSE;
- do_unnest = FALSE;
+ struct task_watchports *watchports = NULL;
+ struct task_watchport_elem *previous_elem_array[TASK_MAX_WATCHPORT_COUNT] = {};
+ os_ref_count_t refs;
- task_lock(task);
+ /* Check if the task has terminated */
+ if (!task->active) {
+ return;
+ }
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
-
- if (thread->state & TH_RUN) {
- runnable = TRUE;
- break;
- }
- }
- if (n == 0)
- task->task_disconnected_count++;
+ assert(portwatch_count <= TASK_MAX_WATCHPORT_COUNT);
- if (task->task_unnested == FALSE) {
- if (runnable == TRUE) {
- task->task_unnested = TRUE;
- do_unnest = TRUE;
- }
- }
- task_unlock(task);
+ watchports = task_watchports_alloc_init(task, thread, portwatch_count);
- if (runnable == FALSE)
- break;
+ /* Lock the ipc space */
+ is_write_lock(task->itk_space);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE, (MACHDBG_CODE(DBG_MACH_WORKINGSET, VM_DISCONNECT_TASK_PAGE_MAPPINGS)) | DBG_FUNC_START,
- task, do_unnest, task->task_disconnected_count, 0, 0);
+ /* Setup watchports to boost the main thread */
+ refs = task_add_turnstile_watchports_locked(task,
+ watchports, previous_elem_array, portwatch_ports,
+ portwatch_count);
- page_count = vm_map_disconnect_page_mappings(task->map, do_unnest);
+ /* Drop the space lock */
+ is_write_unlock(task->itk_space);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE, (MACHDBG_CODE(DBG_MACH_WORKINGSET, VM_DISCONNECT_TASK_PAGE_MAPPINGS)) | DBG_FUNC_END,
- task, page_count, 0, 0, 0);
+ if (refs == 0) {
+ task_watchports_deallocate(watchports);
+ }
- if ((n % 5) == 4)
- IOSleep(1);
+ /* Drop the ref on previous_elem_array */
+ for (uint32_t i = 0; i < portwatch_count && previous_elem_array[i] != NULL; i++) {
+ task_watchport_elem_deallocate(previous_elem_array[i]);
}
- return (KERN_SUCCESS);
}
-#endif
-
-
-#if CONFIG_FREEZE
-
/*
- * task_freeze:
+ * task_remove_turnstile_watchports:
+ * Clear all turnstile boost on the task from watchports.
*
- * Freeze a task.
+ * Arguments:
+ * task: task being terminated
*
- * Conditions:
- * The caller holds a reference to the task
+ * Conditions:
+ * Nothing locked.
*/
-extern void vm_wake_compactor_swapper();
-extern queue_head_t c_swapout_list_head;
-
-kern_return_t
-task_freeze(
- task_t task,
- uint32_t *purgeable_count,
- uint32_t *wired_count,
- uint32_t *clean_count,
- uint32_t *dirty_count,
- uint32_t dirty_budget,
- boolean_t *shared,
- boolean_t walk_only)
+void
+task_remove_turnstile_watchports(
+ task_t task)
{
- kern_return_t kr = KERN_SUCCESS;
-
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
-
- task_lock(task);
-
- while (task->changing_freeze_state) {
-
- assert_wait((event_t)&task->changing_freeze_state, THREAD_UNINT);
- task_unlock(task);
- thread_block(THREAD_CONTINUE_NULL);
-
- task_lock(task);
- }
- if (task->frozen) {
- task_unlock(task);
- return (KERN_FAILURE);
- }
- task->changing_freeze_state = TRUE;
+ os_ref_count_t refs = TASK_MAX_WATCHPORT_COUNT;
+ struct task_watchports *watchports = NULL;
+ ipc_port_t port_freelist[TASK_MAX_WATCHPORT_COUNT] = {};
+ uint32_t portwatch_count;
- task_unlock(task);
+ /* Lock the ipc space */
+ is_write_lock(task->itk_space);
- if (walk_only) {
- panic("task_freeze - walk_only == TRUE");
- } else {
- kr = vm_map_freeze(task->map, purgeable_count, wired_count, clean_count, dirty_count, dirty_budget, shared);
+ /* Check if watchport boost exist */
+ if (task->watchports == NULL) {
+ is_write_unlock(task->itk_space);
+ return;
}
+ watchports = task->watchports;
+ portwatch_count = watchports->tw_elem_array_count;
- task_lock(task);
+ refs = task_remove_turnstile_watchports_locked(task, watchports,
+ port_freelist);
- if (walk_only == FALSE && kr == KERN_SUCCESS)
- task->frozen = TRUE;
- task->changing_freeze_state = FALSE;
- thread_wakeup(&task->changing_freeze_state);
-
- task_unlock(task);
+ is_write_unlock(task->itk_space);
- if (VM_CONFIG_COMPRESSOR_IS_PRESENT) {
- vm_wake_compactor_swapper();
- /*
- * We do an explicit wakeup of the swapout thread here
- * because the compact_and_swap routines don't have
- * knowledge about these kind of "per-task packed c_segs"
- * and so will not be evaluating whether we need to do
- * a wakeup there.
- */
- thread_wakeup((event_t)&c_swapout_list_head);
+ /* Drop all the port references */
+ for (uint32_t i = 0; i < portwatch_count && port_freelist[i] != NULL; i++) {
+ ip_release(port_freelist[i]);
}
- return (kr);
+ /* Clear the task and thread references for task_watchport */
+ if (refs == 0) {
+ task_watchports_deallocate(watchports);
+ }
}
/*
- * task_thaw:
+ * task_transfer_turnstile_watchports:
+ * Transfer all watchport turnstile boost from old task to new task.
*
- * Thaw a currently frozen task.
+ * Arguments:
+ * old_task: task calling exec
+ * new_task: new exec'ed task
+ * thread: main thread of new task
*
- * Conditions:
- * The caller holds a reference to the task
+ * Conditions:
+ * Nothing locked.
*/
-kern_return_t
-task_thaw(
- task_t task)
+void
+task_transfer_turnstile_watchports(
+ task_t old_task,
+ task_t new_task,
+ thread_t new_thread)
{
- if (task == TASK_NULL || task == kernel_task)
- return (KERN_INVALID_ARGUMENT);
-
- task_lock(task);
-
- while (task->changing_freeze_state) {
-
- assert_wait((event_t)&task->changing_freeze_state, THREAD_UNINT);
- task_unlock(task);
- thread_block(THREAD_CONTINUE_NULL);
+ struct task_watchports *old_watchports = NULL;
+ struct task_watchports *new_watchports = NULL;
+ os_ref_count_t old_refs = TASK_MAX_WATCHPORT_COUNT;
+ os_ref_count_t new_refs = TASK_MAX_WATCHPORT_COUNT;
+ uint32_t portwatch_count;
- task_lock(task);
+ if (old_task->watchports == NULL || !new_task->active) {
+ return;
}
- if (!task->frozen) {
- task_unlock(task);
- return (KERN_FAILURE);
+
+ /* Get the watch port count from the old task */
+ is_write_lock(old_task->itk_space);
+ if (old_task->watchports == NULL) {
+ is_write_unlock(old_task->itk_space);
+ return;
}
- task->frozen = FALSE;
-
- task_unlock(task);
- return (KERN_SUCCESS);
-}
+ portwatch_count = old_task->watchports->tw_elem_array_count;
+ is_write_unlock(old_task->itk_space);
-#endif /* CONFIG_FREEZE */
+ new_watchports = task_watchports_alloc_init(new_task, new_thread, portwatch_count);
-kern_return_t
-host_security_set_task_token(
- host_security_t host_security,
- task_t task,
- security_token_t sec_token,
- audit_token_t audit_token,
- host_priv_t host_priv)
-{
- ipc_port_t host_port;
- kern_return_t kr;
+ /* Lock the ipc space for old task */
+ is_write_lock(old_task->itk_space);
- if (task == TASK_NULL)
- return(KERN_INVALID_ARGUMENT);
+ /* Lock the ipc space for new task */
+ is_write_lock(new_task->itk_space);
- if (host_security == HOST_NULL)
- return(KERN_INVALID_SECURITY);
+ /* Check if watchport boost exist */
+ if (old_task->watchports == NULL || !new_task->active) {
+ is_write_unlock(new_task->itk_space);
+ is_write_unlock(old_task->itk_space);
+ (void)task_watchports_release(new_watchports);
+ task_watchports_deallocate(new_watchports);
+ return;
+ }
- task_lock(task);
- task->sec_token = sec_token;
- task->audit_token = audit_token;
+ old_watchports = old_task->watchports;
+ assert(portwatch_count == old_task->watchports->tw_elem_array_count);
- task_unlock(task);
+ /* Setup new task watchports */
+ new_task->watchports = new_watchports;
- if (host_priv != HOST_PRIV_NULL) {
- kr = host_get_host_priv_port(host_priv, &host_port);
- } else {
- kr = host_get_host_port(host_priv_self(), &host_port);
- }
- assert(kr == KERN_SUCCESS);
- kr = task_set_special_port(task, TASK_HOST_PORT, host_port);
- return(kr);
-}
+ for (uint32_t i = 0; i < portwatch_count; i++) {
+ ipc_port_t port = old_watchports->tw_elem[i].twe_port;
-kern_return_t
-task_send_trace_memory(
- task_t target_task,
- __unused uint32_t pid,
- __unused uint64_t uniqueid)
-{
- kern_return_t kr = KERN_INVALID_ARGUMENT;
- if (target_task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ if (port == NULL) {
+ task_watchport_elem_clear(&new_watchports->tw_elem[i]);
+ continue;
+ }
-#if CONFIG_ATM
- kr = atm_send_proc_inspect_notification(target_task,
- pid,
- uniqueid);
+ /* Lock the port and check if it has the entry */
+ ip_lock(port);
+ imq_lock(&port->ip_messages);
-#endif
- return (kr);
-}
-/*
- * This routine was added, pretty much exclusively, for registering the
- * RPC glue vector for in-kernel short circuited tasks. Rather than
- * removing it completely, I have only disabled that feature (which was
- * the only feature at the time). It just appears that we are going to
- * want to add some user data to tasks in the future (i.e. bsd info,
- * task names, etc...), so I left it in the formal task interface.
- */
-kern_return_t
-task_set_info(
- task_t task,
- task_flavor_t flavor,
- __unused task_info_t task_info_in, /* pointer to IN array */
- __unused mach_msg_type_number_t task_info_count)
-{
- if (task == TASK_NULL)
- return(KERN_INVALID_ARGUMENT);
+ task_watchport_elem_init(&new_watchports->tw_elem[i], new_task, port);
- switch (flavor) {
+ if (ipc_port_replace_watchport_elem_conditional_locked(port,
+ &old_watchports->tw_elem[i], &new_watchports->tw_elem[i]) == KERN_SUCCESS) {
+ task_watchport_elem_clear(&old_watchports->tw_elem[i]);
-#if CONFIG_ATM
- case TASK_TRACE_MEMORY_INFO:
- {
- if (task_info_count != TASK_TRACE_MEMORY_INFO_COUNT)
- return (KERN_INVALID_ARGUMENT);
-
- assert(task_info_in != NULL);
- task_trace_memory_info_t mem_info;
- mem_info = (task_trace_memory_info_t) task_info_in;
- kern_return_t kr = atm_register_trace_memory(task,
- mem_info->user_memory_address,
- mem_info->buffer_size);
- return kr;
+ task_watchports_retain(new_watchports);
+ old_refs = task_watchports_release(old_watchports);
+
+ /* Check if all ports are cleaned */
+ if (old_refs == 0) {
+ old_task->watchports = NULL;
+ }
+ } else {
+ task_watchport_elem_clear(&new_watchports->tw_elem[i]);
}
+ /* mqueue and port unlocked by ipc_port_replace_watchport_elem_conditional_locked */
+ }
-#endif
- default:
- return (KERN_INVALID_ARGUMENT);
+ /* Drop the reference on new task_watchports struct returned by task_watchports_alloc_init */
+ new_refs = task_watchports_release(new_watchports);
+ if (new_refs == 0) {
+ new_task->watchports = NULL;
}
- return (KERN_SUCCESS);
-}
-int radar_20146450 = 1;
-kern_return_t
-task_info(
- task_t task,
- task_flavor_t flavor,
- task_info_t task_info_out,
- mach_msg_type_number_t *task_info_count)
-{
- kern_return_t error = KERN_SUCCESS;
- mach_msg_type_number_t original_task_info_count;
+ is_write_unlock(new_task->itk_space);
+ is_write_unlock(old_task->itk_space);
- if (task == TASK_NULL)
- return (KERN_INVALID_ARGUMENT);
+ /* Clear the task and thread references for old_watchport */
+ if (old_refs == 0) {
+ task_watchports_deallocate(old_watchports);
+ }
- original_task_info_count = *task_info_count;
- task_lock(task);
+ /* Clear the task and thread references for new_watchport */
+ if (new_refs == 0) {
+ task_watchports_deallocate(new_watchports);
+ }
+}
- if ((task != current_task()) && (!task->active)) {
- task_unlock(task);
- return (KERN_INVALID_ARGUMENT);
+/*
+ * task_add_turnstile_watchports_locked:
+ * Setup watchports to boost the main thread of the task.
+ *
+ * Arguments:
+ * task: task to boost
+ * watchports: watchport structure to be attached to the task
+ * previous_elem_array: an array of old watchport_elem to be returned to caller
+ * portwatch_ports: array of watchports
+ * portwatch_count: number of watchports
+ *
+ * Conditions:
+ * ipc space of the task locked.
+ * returns array of old watchport_elem in previous_elem_array
+ */
+static os_ref_count_t
+task_add_turnstile_watchports_locked(
+ task_t task,
+ struct task_watchports *watchports,
+ struct task_watchport_elem **previous_elem_array,
+ ipc_port_t *portwatch_ports,
+ uint32_t portwatch_count)
+{
+ os_ref_count_t refs = TASK_MAX_WATCHPORT_COUNT;
+
+ /* Check if the task is still active */
+ if (!task->active) {
+ refs = task_watchports_release(watchports);
+ return refs;
}
- switch (flavor) {
+ assert(task->watchports == NULL);
+ task->watchports = watchports;
- case TASK_BASIC_INFO_32:
- case TASK_BASIC2_INFO_32:
- {
- task_basic_info_32_t basic_info;
- vm_map_t map;
- clock_sec_t secs;
- clock_usec_t usecs;
+ for (uint32_t i = 0, j = 0; i < portwatch_count; i++) {
+ ipc_port_t port = portwatch_ports[i];
- if (*task_info_count < TASK_BASIC_INFO_32_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
+ task_watchport_elem_init(&watchports->tw_elem[i], task, port);
+ if (port == NULL) {
+ task_watchport_elem_clear(&watchports->tw_elem[i]);
+ continue;
}
- basic_info = (task_basic_info_32_t)task_info_out;
+ ip_lock(port);
+ imq_lock(&port->ip_messages);
- map = (task == kernel_task)? kernel_map: task->map;
- basic_info->virtual_size = (typeof(basic_info->virtual_size))map->size;
- if (flavor == TASK_BASIC2_INFO_32) {
- /*
- * The "BASIC2" flavor gets the maximum resident
- * size instead of the current resident size...
- */
- basic_info->resident_size = pmap_resident_max(map->pmap);
- } else {
- basic_info->resident_size = pmap_resident_count(map->pmap);
+ /* Check if port is in valid state to be setup as watchport */
+ if (ipc_port_add_watchport_elem_locked(port, &watchports->tw_elem[i],
+ &previous_elem_array[j]) != KERN_SUCCESS) {
+ task_watchport_elem_clear(&watchports->tw_elem[i]);
+ continue;
}
- basic_info->resident_size *= PAGE_SIZE;
+ /* port and mqueue unlocked on return */
- basic_info->policy = ((task != kernel_task)?
- POLICY_TIMESHARE: POLICY_RR);
- basic_info->suspend_count = task->user_stop_count;
+ ip_reference(port);
+ task_watchports_retain(watchports);
+ if (previous_elem_array[j] != NULL) {
+ j++;
+ }
+ }
- absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
- basic_info->user_time.seconds =
- (typeof(basic_info->user_time.seconds))secs;
- basic_info->user_time.microseconds = usecs;
+ /* Drop the reference on task_watchport struct returned by os_ref_init */
+ refs = task_watchports_release(watchports);
+ if (refs == 0) {
+ task->watchports = NULL;
+ }
- absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
- basic_info->system_time.seconds =
- (typeof(basic_info->system_time.seconds))secs;
- basic_info->system_time.microseconds = usecs;
+ return refs;
+}
- *task_info_count = TASK_BASIC_INFO_32_COUNT;
- break;
- }
+/*
+ * task_remove_turnstile_watchports_locked:
+ * Clear all turnstile boost on the task from watchports.
+ *
+ * Arguments:
+ * task: task to remove watchports from
+ * watchports: watchports structure for the task
+ * port_freelist: array of ports returned with ref to caller
+ *
+ *
+ * Conditions:
+ * ipc space of the task locked.
+ * array of ports with refs are returned in port_freelist
+ */
+static os_ref_count_t
+task_remove_turnstile_watchports_locked(
+ task_t task,
+ struct task_watchports *watchports,
+ ipc_port_t *port_freelist)
+{
+ os_ref_count_t refs = TASK_MAX_WATCHPORT_COUNT;
- case TASK_BASIC_INFO_64:
- {
- task_basic_info_64_t basic_info;
- vm_map_t map;
- clock_sec_t secs;
- clock_usec_t usecs;
+ for (uint32_t i = 0, j = 0; i < watchports->tw_elem_array_count; i++) {
+ ipc_port_t port = watchports->tw_elem[i].twe_port;
+ if (port == NULL) {
+ continue;
+ }
- if (*task_info_count < TASK_BASIC_INFO_64_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
+ /* Lock the port and check if it has the entry */
+ ip_lock(port);
+ imq_lock(&port->ip_messages);
+ if (ipc_port_clear_watchport_elem_internal_conditional_locked(port,
+ &watchports->tw_elem[i]) == KERN_SUCCESS) {
+ task_watchport_elem_clear(&watchports->tw_elem[i]);
+ port_freelist[j++] = port;
+ refs = task_watchports_release(watchports);
+
+ /* Check if all ports are cleaned */
+ if (refs == 0) {
+ task->watchports = NULL;
+ break;
+ }
}
+ /* mqueue and port unlocked by ipc_port_clear_watchport_elem_internal_conditional_locked */
+ }
+ return refs;
+}
- basic_info = (task_basic_info_64_t)task_info_out;
+/*
+ * task_watchports_alloc_init:
+ * Allocate and initialize task watchport struct.
+ *
+ * Conditions:
+ * Nothing locked.
+ */
+static struct task_watchports *
+task_watchports_alloc_init(
+ task_t task,
+ thread_t thread,
+ uint32_t count)
+{
+ struct task_watchports *watchports = kalloc(sizeof(struct task_watchports) +
+ count * sizeof(struct task_watchport_elem));
- map = (task == kernel_task)? kernel_map: task->map;
- basic_info->virtual_size = map->size;
- basic_info->resident_size =
- (mach_vm_size_t)(pmap_resident_count(map->pmap))
- * PAGE_SIZE_64;
+ task_reference(task);
+ thread_reference(thread);
+ watchports->tw_task = task;
+ watchports->tw_thread = thread;
+ watchports->tw_elem_array_count = count;
+ os_ref_init(&watchports->tw_refcount, &task_watchports_refgrp);
- basic_info->policy = ((task != kernel_task)?
- POLICY_TIMESHARE: POLICY_RR);
- basic_info->suspend_count = task->user_stop_count;
+ return watchports;
+}
- absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
- basic_info->user_time.seconds =
- (typeof(basic_info->user_time.seconds))secs;
- basic_info->user_time.microseconds = usecs;
+/*
+ * task_watchports_deallocate:
+ * Deallocate task watchport struct.
+ *
+ * Conditions:
+ * Nothing locked.
+ */
+static void
+task_watchports_deallocate(
+ struct task_watchports *watchports)
+{
+ uint32_t portwatch_count = watchports->tw_elem_array_count;
- absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
- basic_info->system_time.seconds =
- (typeof(basic_info->system_time.seconds))secs;
- basic_info->system_time.microseconds = usecs;
+ task_deallocate(watchports->tw_task);
+ thread_deallocate(watchports->tw_thread);
+ kfree(watchports, sizeof(struct task_watchports) + portwatch_count * sizeof(struct task_watchport_elem));
+}
- *task_info_count = TASK_BASIC_INFO_64_COUNT;
- break;
- }
+/*
+ * task_watchport_elem_deallocate:
+ * Deallocate task watchport element and release its ref on task_watchport.
+ *
+ * Conditions:
+ * Nothing locked.
+ */
+void
+task_watchport_elem_deallocate(
+ struct task_watchport_elem *watchport_elem)
+{
+ os_ref_count_t refs = TASK_MAX_WATCHPORT_COUNT;
+ task_t task = watchport_elem->twe_task;
+ struct task_watchports *watchports = NULL;
+ ipc_port_t port = NULL;
- case MACH_TASK_BASIC_INFO:
- {
- mach_task_basic_info_t basic_info;
- vm_map_t map;
- clock_sec_t secs;
- clock_usec_t usecs;
+ assert(task != NULL);
- if (*task_info_count < MACH_TASK_BASIC_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ /* Take the space lock to modify the elememt */
+ is_write_lock(task->itk_space);
- basic_info = (mach_task_basic_info_t)task_info_out;
+ watchports = task->watchports;
+ assert(watchports != NULL);
- map = (task == kernel_task) ? kernel_map : task->map;
+ port = watchport_elem->twe_port;
+ assert(port != NULL);
- basic_info->virtual_size = map->size;
+ task_watchport_elem_clear(watchport_elem);
+ refs = task_watchports_release(watchports);
- basic_info->resident_size =
- (mach_vm_size_t)(pmap_resident_count(map->pmap));
- basic_info->resident_size *= PAGE_SIZE_64;
+ if (refs == 0) {
+ task->watchports = NULL;
+ }
- basic_info->resident_size_max =
- (mach_vm_size_t)(pmap_resident_max(map->pmap));
- basic_info->resident_size_max *= PAGE_SIZE_64;
+ is_write_unlock(task->itk_space);
- basic_info->policy = ((task != kernel_task) ?
- POLICY_TIMESHARE : POLICY_RR);
+ ip_release(port);
+ if (refs == 0) {
+ task_watchports_deallocate(watchports);
+ }
+}
- basic_info->suspend_count = task->user_stop_count;
+/*
+ * task_has_watchports:
+ * Return TRUE if task has watchport boosts.
+ *
+ * Conditions:
+ * Nothing locked.
+ */
+boolean_t
+task_has_watchports(task_t task)
+{
+ return task->watchports != NULL;
+}
- absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
- basic_info->user_time.seconds =
- (typeof(basic_info->user_time.seconds))secs;
- basic_info->user_time.microseconds = usecs;
+#if DEVELOPMENT || DEBUG
- absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
- basic_info->system_time.seconds =
- (typeof(basic_info->system_time.seconds))secs;
- basic_info->system_time.microseconds = usecs;
+extern void IOSleep(int);
- *task_info_count = MACH_TASK_BASIC_INFO_COUNT;
- break;
- }
+kern_return_t
+task_disconnect_page_mappings(task_t task)
+{
+ int n;
- case TASK_THREAD_TIMES_INFO:
- {
- task_thread_times_info_t times_info;
- thread_t thread;
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (*task_info_count < TASK_THREAD_TIMES_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ /*
+ * this function is used to strip all of the mappings from
+ * the pmap for the specified task to force the task to
+ * re-fault all of the pages it is actively using... this
+ * allows us to approximate the true working set of the
+ * specified task. We only engage if at least 1 of the
+ * threads in the task is runnable, but we want to continuously
+ * sweep (at least for a while - I've arbitrarily set the limit at
+ * 100 sweeps to be re-looked at as we gain experience) to get a better
+ * view into what areas within a page are being visited (as opposed to only
+ * seeing the first fault of a page after the task becomes
+ * runnable)... in the future I may
+ * try to block until awakened by a thread in this task
+ * being made runnable, but for now we'll periodically poll from the
+ * user level debug tool driving the sysctl
+ */
+ for (n = 0; n < 100; n++) {
+ thread_t thread;
+ boolean_t runnable;
+ boolean_t do_unnest;
+ int page_count;
- times_info = (task_thread_times_info_t) task_info_out;
- times_info->user_time.seconds = 0;
- times_info->user_time.microseconds = 0;
- times_info->system_time.seconds = 0;
- times_info->system_time.microseconds = 0;
+ runnable = FALSE;
+ do_unnest = FALSE;
+ task_lock(task);
queue_iterate(&task->threads, thread, thread_t, task_threads) {
- time_value_t user_time, system_time;
-
- if (thread->options & TH_OPT_IDLE_THREAD)
- continue;
-
- thread_read_times(thread, &user_time, &system_time);
-
- time_value_add(×_info->user_time, &user_time);
- time_value_add(×_info->system_time, &system_time);
+ if (thread->state & TH_RUN) {
+ runnable = TRUE;
+ break;
+ }
+ }
+ if (n == 0) {
+ task->task_disconnected_count++;
}
- *task_info_count = TASK_THREAD_TIMES_INFO_COUNT;
- break;
- }
-
- case TASK_ABSOLUTETIME_INFO:
- {
- task_absolutetime_info_t info;
- thread_t thread;
+ if (task->task_unnested == FALSE) {
+ if (runnable == TRUE) {
+ task->task_unnested = TRUE;
+ do_unnest = TRUE;
+ }
+ }
+ task_unlock(task);
- if (*task_info_count < TASK_ABSOLUTETIME_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
+ if (runnable == FALSE) {
break;
}
- info = (task_absolutetime_info_t)task_info_out;
- info->threads_user = info->threads_system = 0;
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE, (MACHDBG_CODE(DBG_MACH_WORKINGSET, VM_DISCONNECT_TASK_PAGE_MAPPINGS)) | DBG_FUNC_START,
+ task, do_unnest, task->task_disconnected_count, 0, 0);
+ page_count = vm_map_disconnect_page_mappings(task->map, do_unnest);
- info->total_user = task->total_user_time;
- info->total_system = task->total_system_time;
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE, (MACHDBG_CODE(DBG_MACH_WORKINGSET, VM_DISCONNECT_TASK_PAGE_MAPPINGS)) | DBG_FUNC_END,
+ task, page_count, 0, 0, 0);
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- uint64_t tval;
- spl_t x;
+ if ((n % 5) == 4) {
+ IOSleep(1);
+ }
+ }
+ return KERN_SUCCESS;
+}
- if (thread->options & TH_OPT_IDLE_THREAD)
- continue;
+#endif
- x = splsched();
- thread_lock(thread);
- tval = timer_grab(&thread->user_timer);
- info->threads_user += tval;
- info->total_user += tval;
+#if CONFIG_FREEZE
- tval = timer_grab(&thread->system_timer);
- if (thread->precise_user_kernel_time) {
- info->threads_system += tval;
- info->total_system += tval;
- } else {
- /* system_timer may represent either sys or user */
- info->threads_user += tval;
- info->total_user += tval;
- }
-
- thread_unlock(thread);
- splx(x);
- }
+/*
+ * task_freeze:
+ *
+ * Freeze a task.
+ *
+ * Conditions:
+ * The caller holds a reference to the task
+ */
+extern void vm_wake_compactor_swapper(void);
+extern queue_head_t c_swapout_list_head;
+extern struct freezer_context freezer_context_global;
+kern_return_t
+task_freeze(
+ task_t task,
+ uint32_t *purgeable_count,
+ uint32_t *wired_count,
+ uint32_t *clean_count,
+ uint32_t *dirty_count,
+ uint32_t dirty_budget,
+ uint32_t *shared_count,
+ int *freezer_error_code,
+ boolean_t eval_only)
+{
+ kern_return_t kr = KERN_SUCCESS;
- *task_info_count = TASK_ABSOLUTETIME_INFO_COUNT;
- break;
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
}
- case TASK_DYLD_INFO:
- {
- task_dyld_info_t info;
-
- /*
- * We added the format field to TASK_DYLD_INFO output. For
- * temporary backward compatibility, accept the fact that
- * clients may ask for the old version - distinquished by the
- * size of the expected result structure.
- */
-#define TASK_LEGACY_DYLD_INFO_COUNT \
- offsetof(struct task_dyld_info, all_image_info_format)/sizeof(natural_t)
-
- if (*task_info_count < TASK_LEGACY_DYLD_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ task_lock(task);
- info = (task_dyld_info_t)task_info_out;
- info->all_image_info_addr = task->all_image_info_addr;
- info->all_image_info_size = task->all_image_info_size;
+ while (task->changing_freeze_state) {
+ assert_wait((event_t)&task->changing_freeze_state, THREAD_UNINT);
+ task_unlock(task);
+ thread_block(THREAD_CONTINUE_NULL);
- /* only set format on output for those expecting it */
- if (*task_info_count >= TASK_DYLD_INFO_COUNT) {
- info->all_image_info_format = task_has_64BitAddr(task) ?
- TASK_DYLD_ALL_IMAGE_INFO_64 :
- TASK_DYLD_ALL_IMAGE_INFO_32 ;
- *task_info_count = TASK_DYLD_INFO_COUNT;
- } else {
- *task_info_count = TASK_LEGACY_DYLD_INFO_COUNT;
- }
- break;
+ task_lock(task);
}
+ if (task->frozen) {
+ task_unlock(task);
+ return KERN_FAILURE;
+ }
+ task->changing_freeze_state = TRUE;
- case TASK_EXTMOD_INFO:
- {
- task_extmod_info_t info;
- void *p;
-
- if (*task_info_count < TASK_EXTMOD_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
-
- info = (task_extmod_info_t)task_info_out;
+ freezer_context_global.freezer_ctx_task = task;
- p = get_bsdtask_info(task);
- if (p) {
- proc_getexecutableuuid(p, info->task_uuid, sizeof(info->task_uuid));
- } else {
- bzero(info->task_uuid, sizeof(info->task_uuid));
- }
- info->extmod_statistics = task->extmod_statistics;
- *task_info_count = TASK_EXTMOD_INFO_COUNT;
+ task_unlock(task);
- break;
- }
+ kr = vm_map_freeze(task,
+ purgeable_count,
+ wired_count,
+ clean_count,
+ dirty_count,
+ dirty_budget,
+ shared_count,
+ freezer_error_code,
+ eval_only);
- case TASK_KERNELMEMORY_INFO:
- {
- task_kernelmemory_info_t tkm_info;
- ledger_amount_t credit, debit;
+ task_lock(task);
- if (*task_info_count < TASK_KERNELMEMORY_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ if ((kr == KERN_SUCCESS) && (eval_only == FALSE)) {
+ task->frozen = TRUE;
- tkm_info = (task_kernelmemory_info_t) task_info_out;
- tkm_info->total_palloc = 0;
- tkm_info->total_pfree = 0;
- tkm_info->total_salloc = 0;
- tkm_info->total_sfree = 0;
+ freezer_context_global.freezer_ctx_task = NULL;
+ freezer_context_global.freezer_ctx_uncompressed_pages = 0;
- if (task == kernel_task) {
+ if (VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
/*
- * All shared allocs/frees from other tasks count against
- * the kernel private memory usage. If we are looking up
- * info for the kernel task, gather from everywhere.
+ * reset the counter tracking the # of swapped compressed pages
+ * because we are now done with this freeze session and task.
*/
- task_unlock(task);
-
- /* start by accounting for all the terminated tasks against the kernel */
- tkm_info->total_palloc = tasks_tkm_private.alloc + tasks_tkm_shared.alloc;
- tkm_info->total_pfree = tasks_tkm_private.free + tasks_tkm_shared.free;
-
- /* count all other task/thread shared alloc/free against the kernel */
- lck_mtx_lock(&tasks_threads_lock);
- /* XXX this really shouldn't be using the function parameter 'task' as a local var! */
- queue_iterate(&tasks, task, task_t, tasks) {
- if (task == kernel_task) {
- if (ledger_get_entries(task->ledger,
- task_ledgers.tkm_private, &credit,
- &debit) == KERN_SUCCESS) {
- tkm_info->total_palloc += credit;
- tkm_info->total_pfree += debit;
- }
- }
- if (!ledger_get_entries(task->ledger,
- task_ledgers.tkm_shared, &credit, &debit)) {
- tkm_info->total_palloc += credit;
- tkm_info->total_pfree += debit;
- }
- }
- lck_mtx_unlock(&tasks_threads_lock);
- } else {
- if (!ledger_get_entries(task->ledger,
- task_ledgers.tkm_private, &credit, &debit)) {
- tkm_info->total_palloc = credit;
- tkm_info->total_pfree = debit;
- }
- if (!ledger_get_entries(task->ledger,
- task_ledgers.tkm_shared, &credit, &debit)) {
- tkm_info->total_salloc = credit;
- tkm_info->total_sfree = debit;
- }
- task_unlock(task);
+ *dirty_count = (uint32_t) (freezer_context_global.freezer_ctx_swapped_bytes / PAGE_SIZE_64); /*used to track pageouts*/
}
- *task_info_count = TASK_KERNELMEMORY_INFO_COUNT;
- return KERN_SUCCESS;
+ freezer_context_global.freezer_ctx_swapped_bytes = 0;
}
- /* OBSOLETE */
- case TASK_SCHED_FIFO_INFO:
- {
+ task->changing_freeze_state = FALSE;
+ thread_wakeup(&task->changing_freeze_state);
- if (*task_info_count < POLICY_FIFO_BASE_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ task_unlock(task);
- error = KERN_INVALID_POLICY;
- break;
+ if (VM_CONFIG_COMPRESSOR_IS_PRESENT &&
+ (kr == KERN_SUCCESS) &&
+ (eval_only == FALSE)) {
+ vm_wake_compactor_swapper();
+ /*
+ * We do an explicit wakeup of the swapout thread here
+ * because the compact_and_swap routines don't have
+ * knowledge about these kind of "per-task packed c_segs"
+ * and so will not be evaluating whether we need to do
+ * a wakeup there.
+ */
+ thread_wakeup((event_t)&c_swapout_list_head);
}
- /* OBSOLETE */
- case TASK_SCHED_RR_INFO:
- {
- policy_rr_base_t rr_base;
- uint32_t quantum_time;
- uint64_t quantum_ns;
-
- if (*task_info_count < POLICY_RR_BASE_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
-
- rr_base = (policy_rr_base_t) task_info_out;
+ return kr;
+}
- if (task != kernel_task) {
- error = KERN_INVALID_POLICY;
- break;
- }
+/*
+ * task_thaw:
+ *
+ * Thaw a currently frozen task.
+ *
+ * Conditions:
+ * The caller holds a reference to the task
+ */
+kern_return_t
+task_thaw(
+ task_t task)
+{
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_ARGUMENT;
+ }
- rr_base->base_priority = task->priority;
+ task_lock(task);
- quantum_time = SCHED(initial_quantum_size)(THREAD_NULL);
- absolutetime_to_nanoseconds(quantum_time, &quantum_ns);
-
- rr_base->quantum = (uint32_t)(quantum_ns / 1000 / 1000);
+ while (task->changing_freeze_state) {
+ assert_wait((event_t)&task->changing_freeze_state, THREAD_UNINT);
+ task_unlock(task);
+ thread_block(THREAD_CONTINUE_NULL);
- *task_info_count = POLICY_RR_BASE_COUNT;
- break;
+ task_lock(task);
}
+ if (!task->frozen) {
+ task_unlock(task);
+ return KERN_FAILURE;
+ }
+ task->frozen = FALSE;
- /* OBSOLETE */
- case TASK_SCHED_TIMESHARE_INFO:
- {
- policy_timeshare_base_t ts_base;
-
- if (*task_info_count < POLICY_TIMESHARE_BASE_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
-
- ts_base = (policy_timeshare_base_t) task_info_out;
+ task_unlock(task);
- if (task == kernel_task) {
- error = KERN_INVALID_POLICY;
- break;
- }
+ return KERN_SUCCESS;
+}
- ts_base->base_priority = task->priority;
+void
+task_update_frozen_to_swap_acct(task_t task, int64_t amount, freezer_acct_op_t op)
+{
+ /*
+ * We don't assert that the task lock is held because we call this
+ * routine from the decompression path and we won't be holding the
+ * task lock. However, since we are in the context of the task we are
+ * safe.
+ * In the case of the task_freeze path, we call it from behind the task
+ * lock but we don't need to because we have a reference on the proc
+ * being frozen.
+ */
- *task_info_count = POLICY_TIMESHARE_BASE_COUNT;
- break;
+ assert(task);
+ if (amount == 0) {
+ return;
}
- case TASK_SECURITY_TOKEN:
- {
- security_token_t *sec_token_p;
-
- if (*task_info_count < TASK_SECURITY_TOKEN_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ if (op == CREDIT_TO_SWAP) {
+ ledger_credit_nocheck(task->ledger, task_ledgers.frozen_to_swap, amount);
+ } else if (op == DEBIT_FROM_SWAP) {
+ ledger_debit_nocheck(task->ledger, task_ledgers.frozen_to_swap, amount);
+ } else {
+ panic("task_update_frozen_to_swap_acct: Invalid ledger op\n");
+ }
+}
+#endif /* CONFIG_FREEZE */
- sec_token_p = (security_token_t *) task_info_out;
+kern_return_t
+host_security_set_task_token(
+ host_security_t host_security,
+ task_t task,
+ security_token_t sec_token,
+ audit_token_t audit_token,
+ host_priv_t host_priv)
+{
+ ipc_port_t host_port;
+ kern_return_t kr;
- *sec_token_p = task->sec_token;
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- *task_info_count = TASK_SECURITY_TOKEN_COUNT;
- break;
+ if (host_security == HOST_NULL) {
+ return KERN_INVALID_SECURITY;
}
-
- case TASK_AUDIT_TOKEN:
- {
- audit_token_t *audit_token_p;
- if (*task_info_count < TASK_AUDIT_TOKEN_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ task_lock(task);
+ task->sec_token = sec_token;
+ task->audit_token = audit_token;
+ task_unlock(task);
- audit_token_p = (audit_token_t *) task_info_out;
+ if (host_priv != HOST_PRIV_NULL) {
+ kr = host_get_host_priv_port(host_priv, &host_port);
+ } else {
+ kr = host_get_host_port(host_priv_self(), &host_port);
+ }
+ assert(kr == KERN_SUCCESS);
- *audit_token_p = task->audit_token;
+ kr = task_set_special_port_internal(task, TASK_HOST_PORT, host_port);
+ return kr;
+}
- *task_info_count = TASK_AUDIT_TOKEN_COUNT;
- break;
+kern_return_t
+task_send_trace_memory(
+ __unused task_t target_task,
+ __unused uint32_t pid,
+ __unused uint64_t uniqueid)
+{
+ return KERN_INVALID_ARGUMENT;
+}
+
+/*
+ * This routine was added, pretty much exclusively, for registering the
+ * RPC glue vector for in-kernel short circuited tasks. Rather than
+ * removing it completely, I have only disabled that feature (which was
+ * the only feature at the time). It just appears that we are going to
+ * want to add some user data to tasks in the future (i.e. bsd info,
+ * task names, etc...), so I left it in the formal task interface.
+ */
+kern_return_t
+task_set_info(
+ task_t task,
+ task_flavor_t flavor,
+ __unused task_info_t task_info_in, /* pointer to IN array */
+ __unused mach_msg_type_number_t task_info_count)
+{
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
}
-
- case TASK_SCHED_INFO:
- error = KERN_INVALID_ARGUMENT;
- break;
+ switch (flavor) {
+#if CONFIG_ATM
+ case TASK_TRACE_MEMORY_INFO:
+ return KERN_NOT_SUPPORTED;
+#endif // CONFIG_ATM
+ default:
+ return KERN_INVALID_ARGUMENT;
+ }
+}
- case TASK_EVENTS_INFO:
- {
- task_events_info_t events_info;
- thread_t thread;
+int radar_20146450 = 1;
+kern_return_t
+task_info(
+ task_t task,
+ task_flavor_t flavor,
+ task_info_t task_info_out,
+ mach_msg_type_number_t *task_info_count)
+{
+ kern_return_t error = KERN_SUCCESS;
+ mach_msg_type_number_t original_task_info_count;
+ bool is_kernel_task = (task == kernel_task);
- if (*task_info_count < TASK_EVENTS_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
- }
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
- events_info = (task_events_info_t) task_info_out;
+ original_task_info_count = *task_info_count;
+ task_lock(task);
+ if ((task != current_task()) && (!task->active)) {
+ task_unlock(task);
+ return KERN_INVALID_ARGUMENT;
+ }
- events_info->faults = task->faults;
- events_info->pageins = task->pageins;
- events_info->cow_faults = task->cow_faults;
- events_info->messages_sent = task->messages_sent;
- events_info->messages_received = task->messages_received;
- events_info->syscalls_mach = task->syscalls_mach;
- events_info->syscalls_unix = task->syscalls_unix;
- events_info->csw = task->c_switch;
+ switch (flavor) {
+ case TASK_BASIC_INFO_32:
+ case TASK_BASIC2_INFO_32:
+#if defined(__arm__) || defined(__arm64__)
+ case TASK_BASIC_INFO_64:
+#endif
+ {
+ task_basic_info_32_t basic_info;
+ vm_map_t map;
+ clock_sec_t secs;
+ clock_usec_t usecs;
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- events_info->csw += thread->c_switch;
- events_info->syscalls_mach += thread->syscalls_mach;
- events_info->syscalls_unix += thread->syscalls_unix;
- }
+ if (*task_info_count < TASK_BASIC_INFO_32_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+ basic_info = (task_basic_info_32_t)task_info_out;
- *task_info_count = TASK_EVENTS_INFO_COUNT;
- break;
- }
- case TASK_AFFINITY_TAG_INFO:
- {
- if (*task_info_count < TASK_AFFINITY_TAG_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
+ map = (task == kernel_task)? kernel_map: task->map;
+ basic_info->virtual_size = (typeof(basic_info->virtual_size))vm_map_adjusted_size(map);
+ if (flavor == TASK_BASIC2_INFO_32) {
+ /*
+ * The "BASIC2" flavor gets the maximum resident
+ * size instead of the current resident size...
+ */
+ basic_info->resident_size = pmap_resident_max(map->pmap);
+ } else {
+ basic_info->resident_size = pmap_resident_count(map->pmap);
+ }
+ basic_info->resident_size *= PAGE_SIZE;
+
+ basic_info->policy = ((task != kernel_task)?
+ POLICY_TIMESHARE: POLICY_RR);
+ basic_info->suspend_count = task->user_stop_count;
+
+ absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
+ basic_info->user_time.seconds =
+ (typeof(basic_info->user_time.seconds))secs;
+ basic_info->user_time.microseconds = usecs;
+
+ absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
+ basic_info->system_time.seconds =
+ (typeof(basic_info->system_time.seconds))secs;
+ basic_info->system_time.microseconds = usecs;
+
+ *task_info_count = TASK_BASIC_INFO_32_COUNT;
+ break;
}
- error = task_affinity_info(task, task_info_out, task_info_count);
- break;
- }
- case TASK_POWER_INFO:
+#if defined(__arm__) || defined(__arm64__)
+ case TASK_BASIC_INFO_64_2:
{
- if (*task_info_count < TASK_POWER_INFO_COUNT) {
+ task_basic_info_64_2_t basic_info;
+ vm_map_t map;
+ clock_sec_t secs;
+ clock_usec_t usecs;
+
+ if (*task_info_count < TASK_BASIC_INFO_64_2_COUNT) {
error = KERN_INVALID_ARGUMENT;
break;
}
- task_power_info_locked(task, (task_power_info_t)task_info_out, NULL, NULL);
+ basic_info = (task_basic_info_64_2_t)task_info_out;
+
+ map = (task == kernel_task)? kernel_map: task->map;
+ basic_info->virtual_size = vm_map_adjusted_size(map);
+ basic_info->resident_size =
+ (mach_vm_size_t)(pmap_resident_count(map->pmap))
+ * PAGE_SIZE_64;
+
+ basic_info->policy = ((task != kernel_task)?
+ POLICY_TIMESHARE: POLICY_RR);
+ basic_info->suspend_count = task->user_stop_count;
+
+ absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
+ basic_info->user_time.seconds =
+ (typeof(basic_info->user_time.seconds))secs;
+ basic_info->user_time.microseconds = usecs;
+
+ absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
+ basic_info->system_time.seconds =
+ (typeof(basic_info->system_time.seconds))secs;
+ basic_info->system_time.microseconds = usecs;
+
+ *task_info_count = TASK_BASIC_INFO_64_2_COUNT;
break;
}
- case TASK_POWER_INFO_V2:
+#else /* defined(__arm__) || defined(__arm64__) */
+ case TASK_BASIC_INFO_64:
{
- if (*task_info_count < TASK_POWER_INFO_V2_COUNT) {
+ task_basic_info_64_t basic_info;
+ vm_map_t map;
+ clock_sec_t secs;
+ clock_usec_t usecs;
+
+ if (*task_info_count < TASK_BASIC_INFO_64_COUNT) {
error = KERN_INVALID_ARGUMENT;
break;
}
- task_power_info_v2_t tpiv2 = (task_power_info_v2_t) task_info_out;
- uint64_t *task_energy = NULL;
- task_power_info_locked(task, &tpiv2->cpu_energy, &tpiv2->gpu_energy, task_energy);
+ basic_info = (task_basic_info_64_t)task_info_out;
+
+ map = (task == kernel_task)? kernel_map: task->map;
+ basic_info->virtual_size = vm_map_adjusted_size(map);
+ basic_info->resident_size =
+ (mach_vm_size_t)(pmap_resident_count(map->pmap))
+ * PAGE_SIZE_64;
+
+ basic_info->policy = ((task != kernel_task)?
+ POLICY_TIMESHARE: POLICY_RR);
+ basic_info->suspend_count = task->user_stop_count;
+
+ absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
+ basic_info->user_time.seconds =
+ (typeof(basic_info->user_time.seconds))secs;
+ basic_info->user_time.microseconds = usecs;
+
+ absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
+ basic_info->system_time.seconds =
+ (typeof(basic_info->system_time.seconds))secs;
+ basic_info->system_time.microseconds = usecs;
+
+ *task_info_count = TASK_BASIC_INFO_64_COUNT;
break;
}
+#endif /* defined(__arm__) || defined(__arm64__) */
- case TASK_VM_INFO:
- case TASK_VM_INFO_PURGEABLE:
+ case MACH_TASK_BASIC_INFO:
{
- task_vm_info_t vm_info;
- vm_map_t map;
+ mach_task_basic_info_t basic_info;
+ vm_map_t map;
+ clock_sec_t secs;
+ clock_usec_t usecs;
- if (*task_info_count < TASK_VM_INFO_REV0_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
+ if (*task_info_count < MACH_TASK_BASIC_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
}
- vm_info = (task_vm_info_t)task_info_out;
-
- if (task == kernel_task) {
- map = kernel_map;
- /* no lock */
- } else {
- map = task->map;
- vm_map_lock_read(map);
- }
+ basic_info = (mach_task_basic_info_t)task_info_out;
- vm_info->virtual_size = (typeof(vm_info->virtual_size))map->size;
- vm_info->region_count = map->hdr.nentries;
- vm_info->page_size = vm_map_page_size(map);
+ map = (task == kernel_task) ? kernel_map : task->map;
- vm_info->resident_size = pmap_resident_count(map->pmap);
- vm_info->resident_size *= PAGE_SIZE;
- vm_info->resident_size_peak = pmap_resident_max(map->pmap);
- vm_info->resident_size_peak *= PAGE_SIZE;
+ basic_info->virtual_size = vm_map_adjusted_size(map);
-#define _VM_INFO(_name) \
- vm_info->_name = ((mach_vm_size_t) map->pmap->stats._name) * PAGE_SIZE
+ basic_info->resident_size =
+ (mach_vm_size_t)(pmap_resident_count(map->pmap));
+ basic_info->resident_size *= PAGE_SIZE_64;
- _VM_INFO(device);
- _VM_INFO(device_peak);
- _VM_INFO(external);
- _VM_INFO(external_peak);
- _VM_INFO(internal);
- _VM_INFO(internal_peak);
- _VM_INFO(reusable);
- _VM_INFO(reusable_peak);
- _VM_INFO(compressed);
- _VM_INFO(compressed_peak);
- _VM_INFO(compressed_lifetime);
+ basic_info->resident_size_max =
+ (mach_vm_size_t)(pmap_resident_max(map->pmap));
+ basic_info->resident_size_max *= PAGE_SIZE_64;
- vm_info->purgeable_volatile_pmap = 0;
- vm_info->purgeable_volatile_resident = 0;
- vm_info->purgeable_volatile_virtual = 0;
- if (task == kernel_task) {
- /*
- * We do not maintain the detailed stats for the
- * kernel_pmap, so just count everything as
- * "internal"...
- */
- vm_info->internal = vm_info->resident_size;
- /*
- * ... but since the memory held by the VM compressor
- * in the kernel address space ought to be attributed
- * to user-space tasks, we subtract it from "internal"
- * to give memory reporting tools a more accurate idea
- * of what the kernel itself is actually using, instead
- * of making it look like the kernel is leaking memory
- * when the system is under memory pressure.
- */
- vm_info->internal -= (VM_PAGE_COMPRESSOR_COUNT *
- PAGE_SIZE);
- } else {
- mach_vm_size_t volatile_virtual_size;
- mach_vm_size_t volatile_resident_size;
- mach_vm_size_t volatile_compressed_size;
- mach_vm_size_t volatile_pmap_size;
- mach_vm_size_t volatile_compressed_pmap_size;
- kern_return_t kr;
+ basic_info->policy = ((task != kernel_task) ?
+ POLICY_TIMESHARE : POLICY_RR);
- if (flavor == TASK_VM_INFO_PURGEABLE) {
- kr = vm_map_query_volatile(
- map,
- &volatile_virtual_size,
- &volatile_resident_size,
- &volatile_compressed_size,
- &volatile_pmap_size,
- &volatile_compressed_pmap_size);
- if (kr == KERN_SUCCESS) {
- vm_info->purgeable_volatile_pmap =
- volatile_pmap_size;
- if (radar_20146450) {
- vm_info->compressed -=
- volatile_compressed_pmap_size;
- }
- vm_info->purgeable_volatile_resident =
- volatile_resident_size;
- vm_info->purgeable_volatile_virtual =
- volatile_virtual_size;
- }
- }
- }
- *task_info_count = TASK_VM_INFO_REV0_COUNT;
+ basic_info->suspend_count = task->user_stop_count;
- if (original_task_info_count >= TASK_VM_INFO_REV1_COUNT) {
- vm_info->phys_footprint =
- (mach_vm_size_t) get_task_phys_footprint(task);
- *task_info_count = TASK_VM_INFO_REV1_COUNT;
- }
- if (original_task_info_count >= TASK_VM_INFO_REV2_COUNT) {
- vm_info->min_address = map->min_offset;
- vm_info->max_address = map->max_offset;
- *task_info_count = TASK_VM_INFO_REV2_COUNT;
- }
+ absolutetime_to_microtime(task->total_user_time, &secs, &usecs);
+ basic_info->user_time.seconds =
+ (typeof(basic_info->user_time.seconds))secs;
+ basic_info->user_time.microseconds = usecs;
- if (task != kernel_task) {
- vm_map_unlock_read(map);
- }
+ absolutetime_to_microtime(task->total_system_time, &secs, &usecs);
+ basic_info->system_time.seconds =
+ (typeof(basic_info->system_time.seconds))secs;
+ basic_info->system_time.microseconds = usecs;
+ *task_info_count = MACH_TASK_BASIC_INFO_COUNT;
break;
}
- case TASK_WAIT_STATE_INFO:
+ case TASK_THREAD_TIMES_INFO:
{
- /*
- * Deprecated flavor. Currently allowing some results until all users
- * stop calling it. The results may not be accurate.
- */
- task_wait_state_info_t wait_state_info;
- uint64_t total_sfi_ledger_val = 0;
+ task_thread_times_info_t times_info;
+ thread_t thread;
- if (*task_info_count < TASK_WAIT_STATE_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
+ if (*task_info_count < TASK_THREAD_TIMES_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
}
- wait_state_info = (task_wait_state_info_t) task_info_out;
-
- wait_state_info->total_wait_state_time = 0;
- bzero(wait_state_info->_reserved, sizeof(wait_state_info->_reserved));
+ times_info = (task_thread_times_info_t) task_info_out;
+ times_info->user_time.seconds = 0;
+ times_info->user_time.microseconds = 0;
+ times_info->system_time.seconds = 0;
+ times_info->system_time.microseconds = 0;
-#if CONFIG_SCHED_SFI
- int i, prev_lentry = -1;
- int64_t val_credit, val_debit;
- for (i = 0; i < MAX_SFI_CLASS_ID; i++){
- val_credit =0;
- /*
- * checking with prev_lentry != entry ensures adjacent classes
- * which share the same ledger do not add wait times twice.
- * Note: Use ledger() call to get data for each individual sfi class.
- */
- if (prev_lentry != task_ledgers.sfi_wait_times[i] &&
- KERN_SUCCESS == ledger_get_entries(task->ledger,
- task_ledgers.sfi_wait_times[i], &val_credit, &val_debit)) {
- total_sfi_ledger_val += val_credit;
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ time_value_t user_time, system_time;
+
+ if (thread->options & TH_OPT_IDLE_THREAD) {
+ continue;
}
- prev_lentry = task_ledgers.sfi_wait_times[i];
- }
-#endif /* CONFIG_SCHED_SFI */
- wait_state_info->total_wait_sfi_state_time = total_sfi_ledger_val;
- *task_info_count = TASK_WAIT_STATE_INFO_COUNT;
+ thread_read_times(thread, &user_time, &system_time, NULL);
+
+ time_value_add(×_info->user_time, &user_time);
+ time_value_add(×_info->system_time, &system_time);
+ }
+ *task_info_count = TASK_THREAD_TIMES_INFO_COUNT;
break;
}
- case TASK_VM_INFO_PURGEABLE_ACCOUNT:
+
+ case TASK_ABSOLUTETIME_INFO:
{
-#if DEVELOPMENT || DEBUG
- pvm_account_info_t acnt_info;
+ task_absolutetime_info_t info;
+ thread_t thread;
- if (*task_info_count < PVM_ACCOUNT_INFO_COUNT) {
+ if (*task_info_count < TASK_ABSOLUTETIME_INFO_COUNT) {
error = KERN_INVALID_ARGUMENT;
break;
}
- if (task_info_out == NULL) {
+ info = (task_absolutetime_info_t)task_info_out;
+ info->threads_user = info->threads_system = 0;
+
+
+ info->total_user = task->total_user_time;
+ info->total_system = task->total_system_time;
+
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ uint64_t tval;
+ spl_t x;
+
+ if (thread->options & TH_OPT_IDLE_THREAD) {
+ continue;
+ }
+
+ x = splsched();
+ thread_lock(thread);
+
+ tval = timer_grab(&thread->user_timer);
+ info->threads_user += tval;
+ info->total_user += tval;
+
+ tval = timer_grab(&thread->system_timer);
+ if (thread->precise_user_kernel_time) {
+ info->threads_system += tval;
+ info->total_system += tval;
+ } else {
+ /* system_timer may represent either sys or user */
+ info->threads_user += tval;
+ info->total_user += tval;
+ }
+
+ thread_unlock(thread);
+ splx(x);
+ }
+
+
+ *task_info_count = TASK_ABSOLUTETIME_INFO_COUNT;
+ break;
+ }
+
+ case TASK_DYLD_INFO:
+ {
+ task_dyld_info_t info;
+
+ /*
+ * We added the format field to TASK_DYLD_INFO output. For
+ * temporary backward compatibility, accept the fact that
+ * clients may ask for the old version - distinquished by the
+ * size of the expected result structure.
+ */
+#define TASK_LEGACY_DYLD_INFO_COUNT \
+ offsetof(struct task_dyld_info, all_image_info_format)/sizeof(natural_t)
+
+ if (*task_info_count < TASK_LEGACY_DYLD_INFO_COUNT) {
error = KERN_INVALID_ARGUMENT;
break;
}
- acnt_info = (pvm_account_info_t) task_info_out;
+ info = (task_dyld_info_t)task_info_out;
+ info->all_image_info_addr = task->all_image_info_addr;
+ info->all_image_info_size = task->all_image_info_size;
- error = vm_purgeable_account(task, acnt_info);
+ /* only set format on output for those expecting it */
+ if (*task_info_count >= TASK_DYLD_INFO_COUNT) {
+ info->all_image_info_format = task_has_64Bit_addr(task) ?
+ TASK_DYLD_ALL_IMAGE_INFO_64 :
+ TASK_DYLD_ALL_IMAGE_INFO_32;
+ *task_info_count = TASK_DYLD_INFO_COUNT;
+ } else {
+ *task_info_count = TASK_LEGACY_DYLD_INFO_COUNT;
+ }
+ break;
+ }
- *task_info_count = PVM_ACCOUNT_INFO_COUNT;
+ case TASK_EXTMOD_INFO:
+ {
+ task_extmod_info_t info;
+ void *p;
+
+ if (*task_info_count < TASK_EXTMOD_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ info = (task_extmod_info_t)task_info_out;
+
+ p = get_bsdtask_info(task);
+ if (p) {
+ proc_getexecutableuuid(p, info->task_uuid, sizeof(info->task_uuid));
+ } else {
+ bzero(info->task_uuid, sizeof(info->task_uuid));
+ }
+ info->extmod_statistics = task->extmod_statistics;
+ *task_info_count = TASK_EXTMOD_INFO_COUNT;
break;
-#else /* DEVELOPMENT || DEBUG */
- error = KERN_NOT_SUPPORTED;
- break;
-#endif /* DEVELOPMENT || DEBUG */
}
- case TASK_FLAGS_INFO:
+
+ case TASK_KERNELMEMORY_INFO:
{
- task_flags_info_t flags_info;
+ task_kernelmemory_info_t tkm_info;
+ ledger_amount_t credit, debit;
- if (*task_info_count < TASK_FLAGS_INFO_COUNT) {
- error = KERN_INVALID_ARGUMENT;
- break;
+ if (*task_info_count < TASK_KERNELMEMORY_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
}
- flags_info = (task_flags_info_t)task_info_out;
+ tkm_info = (task_kernelmemory_info_t) task_info_out;
+ tkm_info->total_palloc = 0;
+ tkm_info->total_pfree = 0;
+ tkm_info->total_salloc = 0;
+ tkm_info->total_sfree = 0;
- /* only publish the 64-bit flag of the task */
- flags_info->flags = task->t_flags & TF_64B_ADDR;
+ if (task == kernel_task) {
+ /*
+ * All shared allocs/frees from other tasks count against
+ * the kernel private memory usage. If we are looking up
+ * info for the kernel task, gather from everywhere.
+ */
+ task_unlock(task);
- *task_info_count = TASK_FLAGS_INFO_COUNT;
- break;
+ /* start by accounting for all the terminated tasks against the kernel */
+ tkm_info->total_palloc = tasks_tkm_private.alloc + tasks_tkm_shared.alloc;
+ tkm_info->total_pfree = tasks_tkm_private.free + tasks_tkm_shared.free;
+
+ /* count all other task/thread shared alloc/free against the kernel */
+ lck_mtx_lock(&tasks_threads_lock);
+
+ /* XXX this really shouldn't be using the function parameter 'task' as a local var! */
+ queue_iterate(&tasks, task, task_t, tasks) {
+ if (task == kernel_task) {
+ if (ledger_get_entries(task->ledger,
+ task_ledgers.tkm_private, &credit,
+ &debit) == KERN_SUCCESS) {
+ tkm_info->total_palloc += credit;
+ tkm_info->total_pfree += debit;
+ }
+ }
+ if (!ledger_get_entries(task->ledger,
+ task_ledgers.tkm_shared, &credit, &debit)) {
+ tkm_info->total_palloc += credit;
+ tkm_info->total_pfree += debit;
+ }
+ }
+ lck_mtx_unlock(&tasks_threads_lock);
+ } else {
+ if (!ledger_get_entries(task->ledger,
+ task_ledgers.tkm_private, &credit, &debit)) {
+ tkm_info->total_palloc = credit;
+ tkm_info->total_pfree = debit;
+ }
+ if (!ledger_get_entries(task->ledger,
+ task_ledgers.tkm_shared, &credit, &debit)) {
+ tkm_info->total_salloc = credit;
+ tkm_info->total_sfree = debit;
+ }
+ task_unlock(task);
+ }
+
+ *task_info_count = TASK_KERNELMEMORY_INFO_COUNT;
+ return KERN_SUCCESS;
}
- case TASK_DEBUG_INFO_INTERNAL:
+ /* OBSOLETE */
+ case TASK_SCHED_FIFO_INFO:
{
-#if DEVELOPMENT || DEBUG
- task_debug_info_internal_t dbg_info;
- if (*task_info_count < TASK_DEBUG_INFO_INTERNAL_COUNT) {
- error = KERN_NOT_SUPPORTED;
+ if (*task_info_count < POLICY_FIFO_BASE_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
break;
}
- if (task_info_out == NULL) {
+ error = KERN_INVALID_POLICY;
+ break;
+ }
+
+ /* OBSOLETE */
+ case TASK_SCHED_RR_INFO:
+ {
+ policy_rr_base_t rr_base;
+ uint32_t quantum_time;
+ uint64_t quantum_ns;
+
+ if (*task_info_count < POLICY_RR_BASE_COUNT) {
error = KERN_INVALID_ARGUMENT;
break;
}
- dbg_info = (task_debug_info_internal_t) task_info_out;
- dbg_info->ipc_space_size = 0;
- if (task->itk_space){
- dbg_info->ipc_space_size = task->itk_space->is_table_size;
+
+ rr_base = (policy_rr_base_t) task_info_out;
+
+ if (task != kernel_task) {
+ error = KERN_INVALID_POLICY;
+ break;
}
- error = KERN_SUCCESS;
- *task_info_count = TASK_DEBUG_INFO_INTERNAL_COUNT;
- break;
-#else /* DEVELOPMENT || DEBUG */
- error = KERN_NOT_SUPPORTED;
+ rr_base->base_priority = task->priority;
+
+ quantum_time = SCHED(initial_quantum_size)(THREAD_NULL);
+ absolutetime_to_nanoseconds(quantum_time, &quantum_ns);
+
+ rr_base->quantum = (uint32_t)(quantum_ns / 1000 / 1000);
+
+ *task_info_count = POLICY_RR_BASE_COUNT;
break;
-#endif /* DEVELOPMENT || DEBUG */
}
- default:
- error = KERN_INVALID_ARGUMENT;
+
+ /* OBSOLETE */
+ case TASK_SCHED_TIMESHARE_INFO:
+ {
+ policy_timeshare_base_t ts_base;
+
+ if (*task_info_count < POLICY_TIMESHARE_BASE_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ ts_base = (policy_timeshare_base_t) task_info_out;
+
+ if (task == kernel_task) {
+ error = KERN_INVALID_POLICY;
+ break;
+ }
+
+ ts_base->base_priority = task->priority;
+
+ *task_info_count = POLICY_TIMESHARE_BASE_COUNT;
+ break;
}
- task_unlock(task);
- return (error);
+ case TASK_SECURITY_TOKEN:
+ {
+ security_token_t *sec_token_p;
+
+ if (*task_info_count < TASK_SECURITY_TOKEN_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ sec_token_p = (security_token_t *) task_info_out;
+
+ *sec_token_p = task->sec_token;
+
+ *task_info_count = TASK_SECURITY_TOKEN_COUNT;
+ break;
+ }
+
+ case TASK_AUDIT_TOKEN:
+ {
+ audit_token_t *audit_token_p;
+
+ if (*task_info_count < TASK_AUDIT_TOKEN_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ audit_token_p = (audit_token_t *) task_info_out;
+
+ *audit_token_p = task->audit_token;
+
+ *task_info_count = TASK_AUDIT_TOKEN_COUNT;
+ break;
+ }
+
+ case TASK_SCHED_INFO:
+ error = KERN_INVALID_ARGUMENT;
+ break;
+
+ case TASK_EVENTS_INFO:
+ {
+ task_events_info_t events_info;
+ thread_t thread;
+
+ if (*task_info_count < TASK_EVENTS_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ events_info = (task_events_info_t) task_info_out;
+
+
+ events_info->faults = (int32_t) MIN(counter_load(&task->faults), INT32_MAX);
+ events_info->pageins = task->pageins;
+ events_info->cow_faults = task->cow_faults;
+ events_info->messages_sent = task->messages_sent;
+ events_info->messages_received = task->messages_received;
+ events_info->syscalls_mach = task->syscalls_mach;
+ events_info->syscalls_unix = task->syscalls_unix;
+
+ events_info->csw = task->c_switch;
+
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ events_info->csw += thread->c_switch;
+ events_info->syscalls_mach += thread->syscalls_mach;
+ events_info->syscalls_unix += thread->syscalls_unix;
+ }
+
+
+ *task_info_count = TASK_EVENTS_INFO_COUNT;
+ break;
+ }
+ case TASK_AFFINITY_TAG_INFO:
+ {
+ if (*task_info_count < TASK_AFFINITY_TAG_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ error = task_affinity_info(task, task_info_out, task_info_count);
+ break;
+ }
+ case TASK_POWER_INFO:
+ {
+ if (*task_info_count < TASK_POWER_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ task_power_info_locked(task, (task_power_info_t)task_info_out, NULL, NULL, NULL);
+ break;
+ }
+
+ case TASK_POWER_INFO_V2:
+ {
+ if (*task_info_count < TASK_POWER_INFO_V2_COUNT_OLD) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+ task_power_info_v2_t tpiv2 = (task_power_info_v2_t) task_info_out;
+ task_power_info_locked(task, &tpiv2->cpu_energy, &tpiv2->gpu_energy, tpiv2, NULL);
+ break;
+ }
+
+ case TASK_VM_INFO:
+ case TASK_VM_INFO_PURGEABLE:
+ {
+ task_vm_info_t vm_info;
+ vm_map_t map;
+
+#if __arm64__
+ struct proc *p;
+ uint32_t platform, sdk;
+ p = current_proc();
+ platform = proc_platform(p);
+ sdk = proc_min_sdk(p);
+ if (original_task_info_count > TASK_VM_INFO_REV2_COUNT &&
+ platform == PLATFORM_IOS &&
+ sdk != 0 &&
+ (sdk >> 16) <= 12) {
+ /*
+ * Some iOS apps pass an incorrect value for
+ * task_info_count, expressed in number of bytes
+ * instead of number of "natural_t" elements.
+ * For the sake of backwards binary compatibility
+ * for apps built with an iOS12 or older SDK and using
+ * the "rev2" data structure, let's fix task_info_count
+ * for them, to avoid stomping past the actual end
+ * of their buffer.
+ */
+#if DEVELOPMENT || DEBUG
+ printf("%s:%d %d[%s] rdar://49484582 task_info_count %d -> %d platform %d sdk %d.%d.%d\n", __FUNCTION__, __LINE__, proc_pid(p), proc_name_address(p), original_task_info_count, TASK_VM_INFO_REV2_COUNT, platform, (sdk >> 16), ((sdk >> 8) & 0xff), (sdk & 0xff));
+#endif /* DEVELOPMENT || DEBUG */
+ DTRACE_VM4(workaround_task_vm_info_count,
+ mach_msg_type_number_t, original_task_info_count,
+ mach_msg_type_number_t, TASK_VM_INFO_REV2_COUNT,
+ uint32_t, platform,
+ uint32_t, sdk);
+ original_task_info_count = TASK_VM_INFO_REV2_COUNT;
+ *task_info_count = original_task_info_count;
+ }
+#endif /* __arm64__ */
+
+ if (*task_info_count < TASK_VM_INFO_REV0_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ vm_info = (task_vm_info_t)task_info_out;
+
+ /*
+ * Do not hold both the task and map locks,
+ * so convert the task lock into a map reference,
+ * drop the task lock, then lock the map.
+ */
+ if (is_kernel_task) {
+ map = kernel_map;
+ task_unlock(task);
+ /* no lock, no reference */
+ } else {
+ map = task->map;
+ vm_map_reference(map);
+ task_unlock(task);
+ vm_map_lock_read(map);
+ }
+
+ vm_info->virtual_size = (typeof(vm_info->virtual_size))vm_map_adjusted_size(map);
+ vm_info->region_count = map->hdr.nentries;
+ vm_info->page_size = vm_map_page_size(map);
+
+ vm_info->resident_size = pmap_resident_count(map->pmap);
+ vm_info->resident_size *= PAGE_SIZE;
+ vm_info->resident_size_peak = pmap_resident_max(map->pmap);
+ vm_info->resident_size_peak *= PAGE_SIZE;
+
+#define _VM_INFO(_name) \
+ vm_info->_name = ((mach_vm_size_t) map->pmap->stats._name) * PAGE_SIZE
+
+ _VM_INFO(device);
+ _VM_INFO(device_peak);
+ _VM_INFO(external);
+ _VM_INFO(external_peak);
+ _VM_INFO(internal);
+ _VM_INFO(internal_peak);
+ _VM_INFO(reusable);
+ _VM_INFO(reusable_peak);
+ _VM_INFO(compressed);
+ _VM_INFO(compressed_peak);
+ _VM_INFO(compressed_lifetime);
+
+ vm_info->purgeable_volatile_pmap = 0;
+ vm_info->purgeable_volatile_resident = 0;
+ vm_info->purgeable_volatile_virtual = 0;
+ if (is_kernel_task) {
+ /*
+ * We do not maintain the detailed stats for the
+ * kernel_pmap, so just count everything as
+ * "internal"...
+ */
+ vm_info->internal = vm_info->resident_size;
+ /*
+ * ... but since the memory held by the VM compressor
+ * in the kernel address space ought to be attributed
+ * to user-space tasks, we subtract it from "internal"
+ * to give memory reporting tools a more accurate idea
+ * of what the kernel itself is actually using, instead
+ * of making it look like the kernel is leaking memory
+ * when the system is under memory pressure.
+ */
+ vm_info->internal -= (VM_PAGE_COMPRESSOR_COUNT *
+ PAGE_SIZE);
+ } else {
+ mach_vm_size_t volatile_virtual_size;
+ mach_vm_size_t volatile_resident_size;
+ mach_vm_size_t volatile_compressed_size;
+ mach_vm_size_t volatile_pmap_size;
+ mach_vm_size_t volatile_compressed_pmap_size;
+ kern_return_t kr;
+
+ if (flavor == TASK_VM_INFO_PURGEABLE) {
+ kr = vm_map_query_volatile(
+ map,
+ &volatile_virtual_size,
+ &volatile_resident_size,
+ &volatile_compressed_size,
+ &volatile_pmap_size,
+ &volatile_compressed_pmap_size);
+ if (kr == KERN_SUCCESS) {
+ vm_info->purgeable_volatile_pmap =
+ volatile_pmap_size;
+ if (radar_20146450) {
+ vm_info->compressed -=
+ volatile_compressed_pmap_size;
+ }
+ vm_info->purgeable_volatile_resident =
+ volatile_resident_size;
+ vm_info->purgeable_volatile_virtual =
+ volatile_virtual_size;
+ }
+ }
+ }
+ *task_info_count = TASK_VM_INFO_REV0_COUNT;
+
+ if (original_task_info_count >= TASK_VM_INFO_REV2_COUNT) {
+ /* must be captured while we still have the map lock */
+ vm_info->min_address = map->min_offset;
+ vm_info->max_address = map->max_offset;
+ }
+
+ /*
+ * Done with vm map things, can drop the map lock and reference,
+ * and take the task lock back.
+ *
+ * Re-validate that the task didn't die on us.
+ */
+ if (!is_kernel_task) {
+ vm_map_unlock_read(map);
+ vm_map_deallocate(map);
+ }
+ map = VM_MAP_NULL;
+
+ task_lock(task);
+
+ if ((task != current_task()) && (!task->active)) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ if (original_task_info_count >= TASK_VM_INFO_REV1_COUNT) {
+ vm_info->phys_footprint =
+ (mach_vm_size_t) get_task_phys_footprint(task);
+ *task_info_count = TASK_VM_INFO_REV1_COUNT;
+ }
+ if (original_task_info_count >= TASK_VM_INFO_REV2_COUNT) {
+ /* data was captured above */
+ *task_info_count = TASK_VM_INFO_REV2_COUNT;
+ }
+
+ if (original_task_info_count >= TASK_VM_INFO_REV3_COUNT) {
+ ledger_get_lifetime_max(task->ledger,
+ task_ledgers.phys_footprint,
+ &vm_info->ledger_phys_footprint_peak);
+ ledger_get_balance(task->ledger,
+ task_ledgers.purgeable_nonvolatile,
+ &vm_info->ledger_purgeable_nonvolatile);
+ ledger_get_balance(task->ledger,
+ task_ledgers.purgeable_nonvolatile_compressed,
+ &vm_info->ledger_purgeable_novolatile_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.purgeable_volatile,
+ &vm_info->ledger_purgeable_volatile);
+ ledger_get_balance(task->ledger,
+ task_ledgers.purgeable_volatile_compressed,
+ &vm_info->ledger_purgeable_volatile_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.network_nonvolatile,
+ &vm_info->ledger_tag_network_nonvolatile);
+ ledger_get_balance(task->ledger,
+ task_ledgers.network_nonvolatile_compressed,
+ &vm_info->ledger_tag_network_nonvolatile_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.network_volatile,
+ &vm_info->ledger_tag_network_volatile);
+ ledger_get_balance(task->ledger,
+ task_ledgers.network_volatile_compressed,
+ &vm_info->ledger_tag_network_volatile_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.media_footprint,
+ &vm_info->ledger_tag_media_footprint);
+ ledger_get_balance(task->ledger,
+ task_ledgers.media_footprint_compressed,
+ &vm_info->ledger_tag_media_footprint_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.media_nofootprint,
+ &vm_info->ledger_tag_media_nofootprint);
+ ledger_get_balance(task->ledger,
+ task_ledgers.media_nofootprint_compressed,
+ &vm_info->ledger_tag_media_nofootprint_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.graphics_footprint,
+ &vm_info->ledger_tag_graphics_footprint);
+ ledger_get_balance(task->ledger,
+ task_ledgers.graphics_footprint_compressed,
+ &vm_info->ledger_tag_graphics_footprint_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.graphics_nofootprint,
+ &vm_info->ledger_tag_graphics_nofootprint);
+ ledger_get_balance(task->ledger,
+ task_ledgers.graphics_nofootprint_compressed,
+ &vm_info->ledger_tag_graphics_nofootprint_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.neural_footprint,
+ &vm_info->ledger_tag_neural_footprint);
+ ledger_get_balance(task->ledger,
+ task_ledgers.neural_footprint_compressed,
+ &vm_info->ledger_tag_neural_footprint_compressed);
+ ledger_get_balance(task->ledger,
+ task_ledgers.neural_nofootprint,
+ &vm_info->ledger_tag_neural_nofootprint);
+ ledger_get_balance(task->ledger,
+ task_ledgers.neural_nofootprint_compressed,
+ &vm_info->ledger_tag_neural_nofootprint_compressed);
+ *task_info_count = TASK_VM_INFO_REV3_COUNT;
+ }
+ if (original_task_info_count >= TASK_VM_INFO_REV4_COUNT) {
+ if (task->bsd_info) {
+ vm_info->limit_bytes_remaining =
+ memorystatus_available_memory_internal(task->bsd_info);
+ } else {
+ vm_info->limit_bytes_remaining = 0;
+ }
+ *task_info_count = TASK_VM_INFO_REV4_COUNT;
+ }
+ if (original_task_info_count >= TASK_VM_INFO_REV5_COUNT) {
+ thread_t thread;
+ integer_t total = task->decompressions;
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ total += thread->decompressions;
+ }
+ vm_info->decompressions = total;
+ *task_info_count = TASK_VM_INFO_REV5_COUNT;
+ }
+
+ break;
+ }
+
+ case TASK_WAIT_STATE_INFO:
+ {
+ /*
+ * Deprecated flavor. Currently allowing some results until all users
+ * stop calling it. The results may not be accurate.
+ */
+ task_wait_state_info_t wait_state_info;
+ uint64_t total_sfi_ledger_val = 0;
+
+ if (*task_info_count < TASK_WAIT_STATE_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ wait_state_info = (task_wait_state_info_t) task_info_out;
+
+ wait_state_info->total_wait_state_time = 0;
+ bzero(wait_state_info->_reserved, sizeof(wait_state_info->_reserved));
+
+#if CONFIG_SCHED_SFI
+ int i, prev_lentry = -1;
+ int64_t val_credit, val_debit;
+
+ for (i = 0; i < MAX_SFI_CLASS_ID; i++) {
+ val_credit = 0;
+ /*
+ * checking with prev_lentry != entry ensures adjacent classes
+ * which share the same ledger do not add wait times twice.
+ * Note: Use ledger() call to get data for each individual sfi class.
+ */
+ if (prev_lentry != task_ledgers.sfi_wait_times[i] &&
+ KERN_SUCCESS == ledger_get_entries(task->ledger,
+ task_ledgers.sfi_wait_times[i], &val_credit, &val_debit)) {
+ total_sfi_ledger_val += val_credit;
+ }
+ prev_lentry = task_ledgers.sfi_wait_times[i];
+ }
+
+#endif /* CONFIG_SCHED_SFI */
+ wait_state_info->total_wait_sfi_state_time = total_sfi_ledger_val;
+ *task_info_count = TASK_WAIT_STATE_INFO_COUNT;
+
+ break;
+ }
+ case TASK_VM_INFO_PURGEABLE_ACCOUNT:
+ {
+#if DEVELOPMENT || DEBUG
+ pvm_account_info_t acnt_info;
+
+ if (*task_info_count < PVM_ACCOUNT_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ if (task_info_out == NULL) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ acnt_info = (pvm_account_info_t) task_info_out;
+
+ error = vm_purgeable_account(task, acnt_info);
+
+ *task_info_count = PVM_ACCOUNT_INFO_COUNT;
+
+ break;
+#else /* DEVELOPMENT || DEBUG */
+ error = KERN_NOT_SUPPORTED;
+ break;
+#endif /* DEVELOPMENT || DEBUG */
+ }
+ case TASK_FLAGS_INFO:
+ {
+ task_flags_info_t flags_info;
+
+ if (*task_info_count < TASK_FLAGS_INFO_COUNT) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ flags_info = (task_flags_info_t)task_info_out;
+
+ /* only publish the 64-bit flag of the task */
+ flags_info->flags = task->t_flags & (TF_64B_ADDR | TF_64B_DATA);
+
+ *task_info_count = TASK_FLAGS_INFO_COUNT;
+ break;
+ }
+
+ case TASK_DEBUG_INFO_INTERNAL:
+ {
+#if DEVELOPMENT || DEBUG
+ task_debug_info_internal_t dbg_info;
+ ipc_space_t space = task->itk_space;
+ if (*task_info_count < TASK_DEBUG_INFO_INTERNAL_COUNT) {
+ error = KERN_NOT_SUPPORTED;
+ break;
+ }
+
+ if (task_info_out == NULL) {
+ error = KERN_INVALID_ARGUMENT;
+ break;
+ }
+ dbg_info = (task_debug_info_internal_t) task_info_out;
+ dbg_info->ipc_space_size = 0;
+
+ if (space) {
+ is_read_lock(space);
+ dbg_info->ipc_space_size = space->is_table_size;
+ is_read_unlock(space);
+ }
+
+ dbg_info->suspend_count = task->suspend_count;
+
+ error = KERN_SUCCESS;
+ *task_info_count = TASK_DEBUG_INFO_INTERNAL_COUNT;
+ break;
+#else /* DEVELOPMENT || DEBUG */
+ error = KERN_NOT_SUPPORTED;
+ break;
+#endif /* DEVELOPMENT || DEBUG */
+ }
+ default:
+ error = KERN_INVALID_ARGUMENT;
+ }
+
+ task_unlock(task);
+ return error;
+}
+
+/*
+ * task_info_from_user
+ *
+ * When calling task_info from user space,
+ * this function will be executed as mig server side
+ * instead of calling directly into task_info.
+ * This gives the possibility to perform more security
+ * checks on task_port.
+ *
+ * In the case of TASK_DYLD_INFO, we require the more
+ * privileged task_read_port not the less-privileged task_name_port.
+ *
+ */
+kern_return_t
+task_info_from_user(
+ mach_port_t task_port,
+ task_flavor_t flavor,
+ task_info_t task_info_out,
+ mach_msg_type_number_t *task_info_count)
+{
+ task_t task;
+ kern_return_t ret;
+
+ if (flavor == TASK_DYLD_INFO) {
+ task = convert_port_to_task_read(task_port);
+ } else {
+ task = convert_port_to_task_name(task_port);
+ }
+
+ ret = task_info(task, flavor, task_info_out, task_info_count);
+
+ task_deallocate(task);
+
+ return ret;
+}
+
+/*
+ * Routine: task_dyld_process_info_update_helper
+ *
+ * Release send rights in release_ports.
+ *
+ * If no active ports found in task's dyld notifier array, unset the magic value
+ * in user space to indicate so.
+ *
+ * Condition:
+ * task's itk_lock is locked, and is unlocked upon return.
+ * Global g_dyldinfo_mtx is locked, and is unlocked upon return.
+ */
+void
+task_dyld_process_info_update_helper(
+ task_t task,
+ size_t active_count,
+ vm_map_address_t magic_addr, /* a userspace address */
+ ipc_port_t *release_ports,
+ size_t release_count)
+{
+ void *notifiers_ptr = NULL;
+
+ assert(release_count <= DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT);
+
+ if (active_count == 0) {
+ assert(task->itk_dyld_notify != NULL);
+ notifiers_ptr = task->itk_dyld_notify;
+ task->itk_dyld_notify = NULL;
+ itk_unlock(task);
+
+ kfree(notifiers_ptr, (vm_size_t)sizeof(ipc_port_t) * DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT);
+ (void)copyoutmap_atomic32(task->map, MACH_PORT_NULL, magic_addr); /* unset magic */
+ } else {
+ itk_unlock(task);
+ (void)copyoutmap_atomic32(task->map, (mach_port_name_t)DYLD_PROCESS_INFO_NOTIFY_MAGIC,
+ magic_addr); /* reset magic */
+ }
+
+ lck_mtx_unlock(&g_dyldinfo_mtx);
+
+ for (size_t i = 0; i < release_count; i++) {
+ ipc_port_release_send(release_ports[i]);
+ }
+}
+
+/*
+ * Routine: task_dyld_process_info_notify_register
+ *
+ * Insert a send right to target task's itk_dyld_notify array. Allocate kernel
+ * memory for the array if it's the first port to be registered. Also cleanup
+ * any dead rights found in the array.
+ *
+ * Consumes sright if returns KERN_SUCCESS, otherwise MIG will destroy it.
+ *
+ * Args:
+ * task: Target task for the registration.
+ * sright: A send right.
+ *
+ * Returns:
+ * KERN_SUCCESS: Registration succeeded.
+ * KERN_INVALID_TASK: task is invalid.
+ * KERN_INVALID_RIGHT: sright is invalid.
+ * KERN_DENIED: Security policy denied this call.
+ * KERN_RESOURCE_SHORTAGE: Kernel memory allocation failed.
+ * KERN_NO_SPACE: No available notifier port slot left for this task.
+ * KERN_RIGHT_EXISTS: The notifier port is already registered and active.
+ *
+ * Other error code see task_info().
+ *
+ * See Also:
+ * task_dyld_process_info_notify_get_trap() in mach_kernelrpc.c
+ */
+kern_return_t
+task_dyld_process_info_notify_register(
+ task_t task,
+ ipc_port_t sright)
+{
+ struct task_dyld_info dyld_info;
+ mach_msg_type_number_t info_count = TASK_DYLD_INFO_COUNT;
+ ipc_port_t release_ports[DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT];
+ uint32_t release_count = 0, active_count = 0;
+ mach_vm_address_t ports_addr; /* a user space address */
+ kern_return_t kr;
+ boolean_t right_exists = false;
+ ipc_port_t *notifiers_ptr = NULL;
+ ipc_port_t *portp;
+
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_TASK;
+ }
+
+ if (!IP_VALID(sright)) {
+ return KERN_INVALID_RIGHT;
+ }
+
+#if CONFIG_MACF
+ if (mac_task_check_dyld_process_info_notify_register()) {
+ return KERN_DENIED;
+ }
+#endif
+
+ kr = task_info(task, TASK_DYLD_INFO, (task_info_t)&dyld_info, &info_count);
+ if (kr) {
+ return kr;
+ }
+
+ if (dyld_info.all_image_info_format == TASK_DYLD_ALL_IMAGE_INFO_32) {
+ ports_addr = (mach_vm_address_t)(dyld_info.all_image_info_addr +
+ offsetof(struct user32_dyld_all_image_infos, notifyMachPorts));
+ } else {
+ ports_addr = (mach_vm_address_t)(dyld_info.all_image_info_addr +
+ offsetof(struct user64_dyld_all_image_infos, notifyMachPorts));
+ }
+
+ if (task->itk_dyld_notify == NULL) {
+ notifiers_ptr = (ipc_port_t *)
+ kalloc_flags(sizeof(ipc_port_t) * DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT, Z_ZERO);
+ if (!notifiers_ptr) {
+ return KERN_RESOURCE_SHORTAGE;
+ }
+ }
+
+ lck_mtx_lock(&g_dyldinfo_mtx);
+ itk_lock(task);
+
+ if (task->itk_dyld_notify == NULL) {
+ task->itk_dyld_notify = notifiers_ptr;
+ notifiers_ptr = NULL;
+ }
+
+ assert(task->itk_dyld_notify != NULL);
+ /* First pass: clear dead names and check for duplicate registration */
+ for (int slot = 0; slot < DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT; slot++) {
+ portp = &task->itk_dyld_notify[slot];
+ if (*portp != IPC_PORT_NULL && !ip_active(*portp)) {
+ release_ports[release_count++] = *portp;
+ *portp = IPC_PORT_NULL;
+ } else if (*portp == sright) {
+ /* the port is already registered and is active */
+ right_exists = true;
+ }
+
+ if (*portp != IPC_PORT_NULL) {
+ active_count++;
+ }
+ }
+
+ if (right_exists) {
+ /* skip second pass */
+ kr = KERN_RIGHT_EXISTS;
+ goto out;
+ }
+
+ /* Second pass: register the port */
+ kr = KERN_NO_SPACE;
+ for (int slot = 0; slot < DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT; slot++) {
+ portp = &task->itk_dyld_notify[slot];
+ if (*portp == IPC_PORT_NULL) {
+ *portp = sright;
+ active_count++;
+ kr = KERN_SUCCESS;
+ break;
+ }
+ }
+
+out:
+ assert(active_count > 0);
+
+ task_dyld_process_info_update_helper(task, active_count,
+ (vm_map_address_t)ports_addr, release_ports, release_count);
+ /* itk_lock, g_dyldinfo_mtx are unlocked upon return */
+
+ if (notifiers_ptr) {
+ kfree(notifiers_ptr, sizeof(ipc_port_t) * DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT);
+ }
+
+ return kr;
+}
+
+/*
+ * Routine: task_dyld_process_info_notify_deregister
+ *
+ * Remove a send right in target task's itk_dyld_notify array matching the receive
+ * right name passed in. Deallocate kernel memory for the array if it's the last port to
+ * be deregistered, or all ports have died. Also cleanup any dead rights found in the array.
+ *
+ * Does not consume any reference.
+ *
+ * Args:
+ * task: Target task for the deregistration.
+ * rcv_name: The name denoting the receive right in caller's space.
+ *
+ * Returns:
+ * KERN_SUCCESS: A matching entry found and degistration succeeded.
+ * KERN_INVALID_TASK: task is invalid.
+ * KERN_INVALID_NAME: name is invalid.
+ * KERN_DENIED: Security policy denied this call.
+ * KERN_FAILURE: A matching entry is not found.
+ * KERN_INVALID_RIGHT: The name passed in does not represent a valid rcv right.
+ *
+ * Other error code see task_info().
+ *
+ * See Also:
+ * task_dyld_process_info_notify_get_trap() in mach_kernelrpc.c
+ */
+kern_return_t
+task_dyld_process_info_notify_deregister(
+ task_t task,
+ mach_port_name_t rcv_name)
+{
+ struct task_dyld_info dyld_info;
+ mach_msg_type_number_t info_count = TASK_DYLD_INFO_COUNT;
+ ipc_port_t release_ports[DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT];
+ uint32_t release_count = 0, active_count = 0;
+ boolean_t port_found = false;
+ mach_vm_address_t ports_addr; /* a user space address */
+ ipc_port_t sright;
+ kern_return_t kr;
+ ipc_port_t *portp;
+
+ if (task == TASK_NULL || task == kernel_task) {
+ return KERN_INVALID_TASK;
+ }
+
+ if (!MACH_PORT_VALID(rcv_name)) {
+ return KERN_INVALID_NAME;
+ }
+
+#if CONFIG_MACF
+ if (mac_task_check_dyld_process_info_notify_register()) {
+ return KERN_DENIED;
+ }
+#endif
+
+ kr = task_info(task, TASK_DYLD_INFO, (task_info_t)&dyld_info, &info_count);
+ if (kr) {
+ return kr;
+ }
+
+ if (dyld_info.all_image_info_format == TASK_DYLD_ALL_IMAGE_INFO_32) {
+ ports_addr = (mach_vm_address_t)(dyld_info.all_image_info_addr +
+ offsetof(struct user32_dyld_all_image_infos, notifyMachPorts));
+ } else {
+ ports_addr = (mach_vm_address_t)(dyld_info.all_image_info_addr +
+ offsetof(struct user64_dyld_all_image_infos, notifyMachPorts));
+ }
+
+ kr = ipc_port_translate_receive(current_space(), rcv_name, &sright); /* does not produce port ref */
+ if (kr) {
+ return KERN_INVALID_RIGHT;
+ }
+
+ ip_reference(sright);
+ ip_unlock(sright);
+
+ assert(sright != IPC_PORT_NULL);
+
+ lck_mtx_lock(&g_dyldinfo_mtx);
+ itk_lock(task);
+
+ if (task->itk_dyld_notify == NULL) {
+ itk_unlock(task);
+ lck_mtx_unlock(&g_dyldinfo_mtx);
+ ip_release(sright);
+ return KERN_FAILURE;
+ }
+
+ for (int slot = 0; slot < DYLD_MAX_PROCESS_INFO_NOTIFY_COUNT; slot++) {
+ portp = &task->itk_dyld_notify[slot];
+ if (*portp == sright) {
+ release_ports[release_count++] = *portp;
+ *portp = IPC_PORT_NULL;
+ port_found = true;
+ } else if ((*portp != IPC_PORT_NULL && !ip_active(*portp))) {
+ release_ports[release_count++] = *portp;
+ *portp = IPC_PORT_NULL;
+ }
+
+ if (*portp != IPC_PORT_NULL) {
+ active_count++;
+ }
+ }
+
+ task_dyld_process_info_update_helper(task, active_count,
+ (vm_map_address_t)ports_addr, release_ports, release_count);
+ /* itk_lock, g_dyldinfo_mtx are unlocked upon return */
+
+ ip_release(sright);
+
+ return port_found ? KERN_SUCCESS : KERN_FAILURE;
+}
+
+/*
+ * task_power_info
+ *
+ * Returns power stats for the task.
+ * Note: Called with task locked.
+ */
+void
+task_power_info_locked(
+ task_t task,
+ task_power_info_t info,
+ gpu_energy_data_t ginfo,
+ task_power_info_v2_t infov2,
+ uint64_t *runnable_time)
+{
+ thread_t thread;
+ ledger_amount_t tmp;
+
+ uint64_t runnable_time_sum = 0;
+
+ task_lock_assert_owned(task);
+
+ ledger_get_entries(task->ledger, task_ledgers.interrupt_wakeups,
+ (ledger_amount_t *)&info->task_interrupt_wakeups, &tmp);
+ ledger_get_entries(task->ledger, task_ledgers.platform_idle_wakeups,
+ (ledger_amount_t *)&info->task_platform_idle_wakeups, &tmp);
+
+ info->task_timer_wakeups_bin_1 = task->task_timer_wakeups_bin_1;
+ info->task_timer_wakeups_bin_2 = task->task_timer_wakeups_bin_2;
+
+ info->total_user = task->total_user_time;
+ info->total_system = task->total_system_time;
+ runnable_time_sum = task->total_runnable_time;
+
+#if defined(__arm__) || defined(__arm64__)
+ if (infov2) {
+ infov2->task_energy = task->task_energy;
+ }
+#endif /* defined(__arm__) || defined(__arm64__) */
+
+ if (ginfo) {
+ ginfo->task_gpu_utilisation = task->task_gpu_ns;
+ }
+
+ if (infov2) {
+ infov2->task_ptime = task->total_ptime;
+ infov2->task_pset_switches = task->ps_switch;
+ }
+
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ uint64_t tval;
+ spl_t x;
+
+ if (thread->options & TH_OPT_IDLE_THREAD) {
+ continue;
+ }
+
+ x = splsched();
+ thread_lock(thread);
+
+ info->task_timer_wakeups_bin_1 += thread->thread_timer_wakeups_bin_1;
+ info->task_timer_wakeups_bin_2 += thread->thread_timer_wakeups_bin_2;
+
+#if defined(__arm__) || defined(__arm64__)
+ if (infov2) {
+ infov2->task_energy += ml_energy_stat(thread);
+ }
+#endif /* defined(__arm__) || defined(__arm64__) */
+
+ tval = timer_grab(&thread->user_timer);
+ info->total_user += tval;
+
+ if (infov2) {
+ tval = timer_grab(&thread->ptime);
+ infov2->task_ptime += tval;
+ infov2->task_pset_switches += thread->ps_switch;
+ }
+
+ tval = timer_grab(&thread->system_timer);
+ if (thread->precise_user_kernel_time) {
+ info->total_system += tval;
+ } else {
+ /* system_timer may represent either sys or user */
+ info->total_user += tval;
+ }
+
+ tval = timer_grab(&thread->runnable_timer);
+
+ runnable_time_sum += tval;
+
+ if (ginfo) {
+ ginfo->task_gpu_utilisation += ml_gpu_stat(thread);
+ }
+ thread_unlock(thread);
+ splx(x);
+ }
+
+ if (runnable_time) {
+ *runnable_time = runnable_time_sum;
+ }
+}
+
+/*
+ * task_gpu_utilisation
+ *
+ * Returns the total gpu time used by the all the threads of the task
+ * (both dead and alive)
+ */
+uint64_t
+task_gpu_utilisation(
+ task_t task)
+{
+ uint64_t gpu_time = 0;
+#if defined(__x86_64__)
+ thread_t thread;
+
+ task_lock(task);
+ gpu_time += task->task_gpu_ns;
+
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ spl_t x;
+ x = splsched();
+ thread_lock(thread);
+ gpu_time += ml_gpu_stat(thread);
+ thread_unlock(thread);
+ splx(x);
+ }
+
+ task_unlock(task);
+#else /* defined(__x86_64__) */
+ /* silence compiler warning */
+ (void)task;
+#endif /* defined(__x86_64__) */
+ return gpu_time;
+}
+
+/*
+ * task_energy
+ *
+ * Returns the total energy used by the all the threads of the task
+ * (both dead and alive)
+ */
+uint64_t
+task_energy(
+ task_t task)
+{
+ uint64_t energy = 0;
+ thread_t thread;
+
+ task_lock(task);
+ energy += task->task_energy;
+
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ spl_t x;
+ x = splsched();
+ thread_lock(thread);
+ energy += ml_energy_stat(thread);
+ thread_unlock(thread);
+ splx(x);
+ }
+
+ task_unlock(task);
+ return energy;
+}
+
+#if __AMP__
+
+uint64_t
+task_cpu_ptime(
+ task_t task)
+{
+ uint64_t cpu_ptime = 0;
+ thread_t thread;
+
+ task_lock(task);
+ cpu_ptime += task->total_ptime;
+
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ cpu_ptime += timer_grab(&thread->ptime);
+ }
+
+ task_unlock(task);
+ return cpu_ptime;
+}
+
+#else /* __AMP__ */
+
+uint64_t
+task_cpu_ptime(
+ __unused task_t task)
+{
+ return 0;
+}
+
+#endif /* __AMP__ */
+
+/* This function updates the cpu time in the arrays for each
+ * effective and requested QoS class
+ */
+void
+task_update_cpu_time_qos_stats(
+ task_t task,
+ uint64_t *eqos_stats,
+ uint64_t *rqos_stats)
+{
+ if (!eqos_stats && !rqos_stats) {
+ return;
+ }
+
+ task_lock(task);
+ thread_t thread;
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ if (thread->options & TH_OPT_IDLE_THREAD) {
+ continue;
+ }
+
+ thread_update_qos_cpu_time(thread);
+ }
+
+ if (eqos_stats) {
+ eqos_stats[THREAD_QOS_DEFAULT] += task->cpu_time_eqos_stats.cpu_time_qos_default;
+ eqos_stats[THREAD_QOS_MAINTENANCE] += task->cpu_time_eqos_stats.cpu_time_qos_maintenance;
+ eqos_stats[THREAD_QOS_BACKGROUND] += task->cpu_time_eqos_stats.cpu_time_qos_background;
+ eqos_stats[THREAD_QOS_UTILITY] += task->cpu_time_eqos_stats.cpu_time_qos_utility;
+ eqos_stats[THREAD_QOS_LEGACY] += task->cpu_time_eqos_stats.cpu_time_qos_legacy;
+ eqos_stats[THREAD_QOS_USER_INITIATED] += task->cpu_time_eqos_stats.cpu_time_qos_user_initiated;
+ eqos_stats[THREAD_QOS_USER_INTERACTIVE] += task->cpu_time_eqos_stats.cpu_time_qos_user_interactive;
+ }
+
+ if (rqos_stats) {
+ rqos_stats[THREAD_QOS_DEFAULT] += task->cpu_time_rqos_stats.cpu_time_qos_default;
+ rqos_stats[THREAD_QOS_MAINTENANCE] += task->cpu_time_rqos_stats.cpu_time_qos_maintenance;
+ rqos_stats[THREAD_QOS_BACKGROUND] += task->cpu_time_rqos_stats.cpu_time_qos_background;
+ rqos_stats[THREAD_QOS_UTILITY] += task->cpu_time_rqos_stats.cpu_time_qos_utility;
+ rqos_stats[THREAD_QOS_LEGACY] += task->cpu_time_rqos_stats.cpu_time_qos_legacy;
+ rqos_stats[THREAD_QOS_USER_INITIATED] += task->cpu_time_rqos_stats.cpu_time_qos_user_initiated;
+ rqos_stats[THREAD_QOS_USER_INTERACTIVE] += task->cpu_time_rqos_stats.cpu_time_qos_user_interactive;
+ }
+
+ task_unlock(task);
+}
+
+kern_return_t
+task_purgable_info(
+ task_t task,
+ task_purgable_info_t *stats)
+{
+ if (task == TASK_NULL || stats == NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+ /* Take task reference */
+ task_reference(task);
+ vm_purgeable_stats((vm_purgeable_info_t)stats, task);
+ /* Drop task reference */
+ task_deallocate(task);
+ return KERN_SUCCESS;
+}
+
+void
+task_vtimer_set(
+ task_t task,
+ integer_t which)
+{
+ thread_t thread;
+ spl_t x;
+
+ task_lock(task);
+
+ task->vtimers |= which;
+
+ switch (which) {
+ case TASK_VTIMER_USER:
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ x = splsched();
+ thread_lock(thread);
+ if (thread->precise_user_kernel_time) {
+ thread->vtimer_user_save = timer_grab(&thread->user_timer);
+ } else {
+ thread->vtimer_user_save = timer_grab(&thread->system_timer);
+ }
+ thread_unlock(thread);
+ splx(x);
+ }
+ break;
+
+ case TASK_VTIMER_PROF:
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ x = splsched();
+ thread_lock(thread);
+ thread->vtimer_prof_save = timer_grab(&thread->user_timer);
+ thread->vtimer_prof_save += timer_grab(&thread->system_timer);
+ thread_unlock(thread);
+ splx(x);
+ }
+ break;
+
+ case TASK_VTIMER_RLIM:
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ x = splsched();
+ thread_lock(thread);
+ thread->vtimer_rlim_save = timer_grab(&thread->user_timer);
+ thread->vtimer_rlim_save += timer_grab(&thread->system_timer);
+ thread_unlock(thread);
+ splx(x);
+ }
+ break;
+ }
+
+ task_unlock(task);
+}
+
+void
+task_vtimer_clear(
+ task_t task,
+ integer_t which)
+{
+ assert(task == current_task());
+
+ task_lock(task);
+
+ task->vtimers &= ~which;
+
+ task_unlock(task);
+}
+
+void
+task_vtimer_update(
+ __unused
+ task_t task,
+ integer_t which,
+ uint32_t *microsecs)
+{
+ thread_t thread = current_thread();
+ uint32_t tdelt = 0;
+ clock_sec_t secs = 0;
+ uint64_t tsum;
+
+ assert(task == current_task());
+
+ spl_t s = splsched();
+ thread_lock(thread);
+
+ if ((task->vtimers & which) != (uint32_t)which) {
+ thread_unlock(thread);
+ splx(s);
+ return;
+ }
+
+ switch (which) {
+ case TASK_VTIMER_USER:
+ if (thread->precise_user_kernel_time) {
+ tdelt = (uint32_t)timer_delta(&thread->user_timer,
+ &thread->vtimer_user_save);
+ } else {
+ tdelt = (uint32_t)timer_delta(&thread->system_timer,
+ &thread->vtimer_user_save);
+ }
+ absolutetime_to_microtime(tdelt, &secs, microsecs);
+ break;
+
+ case TASK_VTIMER_PROF:
+ tsum = timer_grab(&thread->user_timer);
+ tsum += timer_grab(&thread->system_timer);
+ tdelt = (uint32_t)(tsum - thread->vtimer_prof_save);
+ absolutetime_to_microtime(tdelt, &secs, microsecs);
+ /* if the time delta is smaller than a usec, ignore */
+ if (*microsecs != 0) {
+ thread->vtimer_prof_save = tsum;
+ }
+ break;
+
+ case TASK_VTIMER_RLIM:
+ tsum = timer_grab(&thread->user_timer);
+ tsum += timer_grab(&thread->system_timer);
+ tdelt = (uint32_t)(tsum - thread->vtimer_rlim_save);
+ thread->vtimer_rlim_save = tsum;
+ absolutetime_to_microtime(tdelt, &secs, microsecs);
+ break;
+ }
+
+ thread_unlock(thread);
+ splx(s);
+}
+
+/*
+ * task_assign:
+ *
+ * Change the assigned processor set for the task
+ */
+kern_return_t
+task_assign(
+ __unused task_t task,
+ __unused processor_set_t new_pset,
+ __unused boolean_t assign_threads)
+{
+ return KERN_FAILURE;
+}
+
+/*
+ * task_assign_default:
+ *
+ * Version of task_assign to assign to default processor set.
+ */
+kern_return_t
+task_assign_default(
+ task_t task,
+ boolean_t assign_threads)
+{
+ return task_assign(task, &pset0, assign_threads);
+}
+
+/*
+ * task_get_assignment
+ *
+ * Return name of processor set that task is assigned to.
+ */
+kern_return_t
+task_get_assignment(
+ task_t task,
+ processor_set_t *pset)
+{
+ if (!task || !task->active) {
+ return KERN_FAILURE;
+ }
+
+ *pset = &pset0;
+
+ return KERN_SUCCESS;
+}
+
+uint64_t
+get_task_dispatchqueue_offset(
+ task_t task)
+{
+ return task->dispatchqueue_offset;
+}
+
+/*
+ * task_policy
+ *
+ * Set scheduling policy and parameters, both base and limit, for
+ * the given task. Policy must be a policy which is enabled for the
+ * processor set. Change contained threads if requested.
+ */
+kern_return_t
+task_policy(
+ __unused task_t task,
+ __unused policy_t policy_id,
+ __unused policy_base_t base,
+ __unused mach_msg_type_number_t count,
+ __unused boolean_t set_limit,
+ __unused boolean_t change)
+{
+ return KERN_FAILURE;
+}
+
+/*
+ * task_set_policy
+ *
+ * Set scheduling policy and parameters, both base and limit, for
+ * the given task. Policy can be any policy implemented by the
+ * processor set, whether enabled or not. Change contained threads
+ * if requested.
+ */
+kern_return_t
+task_set_policy(
+ __unused task_t task,
+ __unused processor_set_t pset,
+ __unused policy_t policy_id,
+ __unused policy_base_t base,
+ __unused mach_msg_type_number_t base_count,
+ __unused policy_limit_t limit,
+ __unused mach_msg_type_number_t limit_count,
+ __unused boolean_t change)
+{
+ return KERN_FAILURE;
+}
+
+kern_return_t
+task_set_ras_pc(
+ __unused task_t task,
+ __unused vm_offset_t pc,
+ __unused vm_offset_t endpc)
+{
+ return KERN_FAILURE;
+}
+
+void
+task_synchronizer_destroy_all(task_t task)
+{
+ /*
+ * Destroy owned semaphores
+ */
+ semaphore_destroy_all(task);
+}
+
+/*
+ * Install default (machine-dependent) initial thread state
+ * on the task. Subsequent thread creation will have this initial
+ * state set on the thread by machine_thread_inherit_taskwide().
+ * Flavors and structures are exactly the same as those to thread_set_state()
+ */
+kern_return_t
+task_set_state(
+ task_t task,
+ int flavor,
+ thread_state_t state,
+ mach_msg_type_number_t state_count)
+{
+ kern_return_t ret;
+
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ task_lock(task);
+
+ if (!task->active) {
+ task_unlock(task);
+ return KERN_FAILURE;
+ }
+
+ ret = machine_task_set_state(task, flavor, state, state_count);
+
+ task_unlock(task);
+ return ret;
+}
+
+/*
+ * Examine the default (machine-dependent) initial thread state
+ * on the task, as set by task_set_state(). Flavors and structures
+ * are exactly the same as those passed to thread_get_state().
+ */
+kern_return_t
+task_get_state(
+ task_t task,
+ int flavor,
+ thread_state_t state,
+ mach_msg_type_number_t *state_count)
+{
+ kern_return_t ret;
+
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ task_lock(task);
+
+ if (!task->active) {
+ task_unlock(task);
+ return KERN_FAILURE;
+ }
+
+ ret = machine_task_get_state(task, flavor, state, state_count);
+
+ task_unlock(task);
+ return ret;
+}
+
+
+static kern_return_t __attribute__((noinline, not_tail_called))
+PROC_VIOLATED_GUARD__SEND_EXC_GUARD_AND_SUSPEND(
+ mach_exception_code_t code,
+ mach_exception_subcode_t subcode,
+ void *reason)
+{
+#ifdef MACH_BSD
+ if (1 == proc_selfpid()) {
+ return KERN_NOT_SUPPORTED; // initproc is immune
+ }
+#endif
+ mach_exception_data_type_t codes[EXCEPTION_CODE_MAX] = {
+ [0] = code,
+ [1] = subcode,
+ };
+ task_t task = current_task();
+ kern_return_t kr;
+
+ /* (See jetsam-related comments below) */
+
+ proc_memstat_terminated(task->bsd_info, TRUE);
+ kr = task_enqueue_exception_with_corpse(task, EXC_GUARD, codes, 2, reason);
+ proc_memstat_terminated(task->bsd_info, FALSE);
+ return kr;
+}
+
+kern_return_t
+task_violated_guard(
+ mach_exception_code_t code,
+ mach_exception_subcode_t subcode,
+ void *reason)
+{
+ return PROC_VIOLATED_GUARD__SEND_EXC_GUARD_AND_SUSPEND(code, subcode, reason);
+}
+
+
+#if CONFIG_MEMORYSTATUS
+
+boolean_t
+task_get_memlimit_is_active(task_t task)
+{
+ assert(task != NULL);
+
+ if (task->memlimit_is_active == 1) {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
+void
+task_set_memlimit_is_active(task_t task, boolean_t memlimit_is_active)
+{
+ assert(task != NULL);
+
+ if (memlimit_is_active) {
+ task->memlimit_is_active = 1;
+ } else {
+ task->memlimit_is_active = 0;
+ }
+}
+
+boolean_t
+task_get_memlimit_is_fatal(task_t task)
+{
+ assert(task != NULL);
+
+ if (task->memlimit_is_fatal == 1) {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
+void
+task_set_memlimit_is_fatal(task_t task, boolean_t memlimit_is_fatal)
+{
+ assert(task != NULL);
+
+ if (memlimit_is_fatal) {
+ task->memlimit_is_fatal = 1;
+ } else {
+ task->memlimit_is_fatal = 0;
+ }
+}
+
+boolean_t
+task_has_triggered_exc_resource(task_t task, boolean_t memlimit_is_active)
+{
+ boolean_t triggered = FALSE;
+
+ assert(task == current_task());
+
+ /*
+ * Returns true, if task has already triggered an exc_resource exception.
+ */
+
+ if (memlimit_is_active) {
+ triggered = (task->memlimit_active_exc_resource ? TRUE : FALSE);
+ } else {
+ triggered = (task->memlimit_inactive_exc_resource ? TRUE : FALSE);
+ }
+
+ return triggered;
+}
+
+void
+task_mark_has_triggered_exc_resource(task_t task, boolean_t memlimit_is_active)
+{
+ assert(task == current_task());
+
+ /*
+ * We allow one exc_resource per process per active/inactive limit.
+ * The limit's fatal attribute does not come into play.
+ */
+
+ if (memlimit_is_active) {
+ task->memlimit_active_exc_resource = 1;
+ } else {
+ task->memlimit_inactive_exc_resource = 1;
+ }
+}
+
+#define HWM_USERCORE_MINSPACE 250 // free space (in MB) required *after* core file creation
+
+void __attribute__((noinline))
+PROC_CROSSED_HIGH_WATERMARK__SEND_EXC_RESOURCE_AND_SUSPEND(int max_footprint_mb, boolean_t is_fatal)
+{
+ task_t task = current_task();
+ int pid = 0;
+ const char *procname = "unknown";
+ mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
+ boolean_t send_sync_exc_resource = FALSE;
+
+#ifdef MACH_BSD
+ pid = proc_selfpid();
+
+ if (pid == 1) {
+ /*
+ * Cannot have ReportCrash analyzing
+ * a suspended initproc.
+ */
+ return;
+ }
+
+ if (task->bsd_info != NULL) {
+ procname = proc_name_address(current_task()->bsd_info);
+ send_sync_exc_resource = proc_send_synchronous_EXC_RESOURCE(current_task()->bsd_info);
+ }
+#endif
+#if CONFIG_COREDUMP
+ if (hwm_user_cores) {
+ int error;
+ uint64_t starttime, end;
+ clock_sec_t secs = 0;
+ uint32_t microsecs = 0;
+
+ starttime = mach_absolute_time();
+ /*
+ * Trigger a coredump of this process. Don't proceed unless we know we won't
+ * be filling up the disk; and ignore the core size resource limit for this
+ * core file.
+ */
+ if ((error = coredump(current_task()->bsd_info, HWM_USERCORE_MINSPACE, COREDUMP_IGNORE_ULIMIT)) != 0) {
+ printf("couldn't take coredump of %s[%d]: %d\n", procname, pid, error);
+ }
+ /*
+ * coredump() leaves the task suspended.
+ */
+ task_resume_internal(current_task());
+
+ end = mach_absolute_time();
+ absolutetime_to_microtime(end - starttime, &secs, µsecs);
+ printf("coredump of %s[%d] taken in %d secs %d microsecs\n",
+ proc_name_address(current_task()->bsd_info), pid, (int)secs, microsecs);
+ }
+#endif /* CONFIG_COREDUMP */
+
+ if (disable_exc_resource) {
+ printf("process %s[%d] crossed memory high watermark (%d MB); EXC_RESOURCE "
+ "supressed by a boot-arg.\n", procname, pid, max_footprint_mb);
+ return;
+ }
+
+ /*
+ * A task that has triggered an EXC_RESOURCE, should not be
+ * jetsammed when the device is under memory pressure. Here
+ * we set the P_MEMSTAT_TERMINATED flag so that the process
+ * will be skipped if the memorystatus_thread wakes up.
+ */
+ proc_memstat_terminated(current_task()->bsd_info, TRUE);
+
+ code[0] = code[1] = 0;
+ EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_MEMORY);
+ EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_HIGH_WATERMARK);
+ EXC_RESOURCE_HWM_ENCODE_LIMIT(code[0], max_footprint_mb);
+
+ /*
+ * Do not generate a corpse fork if the violation is a fatal one
+ * or the process wants synchronous EXC_RESOURCE exceptions.
+ */
+ if (is_fatal || send_sync_exc_resource || exc_via_corpse_forking == 0) {
+ /* Do not send a EXC_RESOURCE if corpse_for_fatal_memkill is set */
+ if (send_sync_exc_resource || corpse_for_fatal_memkill == 0) {
+ /*
+ * Use the _internal_ variant so that no user-space
+ * process can resume our task from under us.
+ */
+ task_suspend_internal(task);
+ exception_triage(EXC_RESOURCE, code, EXCEPTION_CODE_MAX);
+ task_resume_internal(task);
+ }
+ } else {
+ if (audio_active) {
+ printf("process %s[%d] crossed memory high watermark (%d MB); EXC_RESOURCE "
+ "supressed due to audio playback.\n", procname, pid, max_footprint_mb);
+ } else {
+ task_enqueue_exception_with_corpse(task, EXC_RESOURCE,
+ code, EXCEPTION_CODE_MAX, NULL);
+ }
+ }
+
+ /*
+ * After the EXC_RESOURCE has been handled, we must clear the
+ * P_MEMSTAT_TERMINATED flag so that the process can again be
+ * considered for jetsam if the memorystatus_thread wakes up.
+ */
+ proc_memstat_terminated(current_task()->bsd_info, FALSE); /* clear the flag */
}
-/*
- * task_power_info
- *
- * Returns power stats for the task.
- * Note: Called with task locked.
+/*
+ * Callback invoked when a task exceeds its physical footprint limit.
*/
void
-task_power_info_locked(
- task_t task,
- task_power_info_t info,
- gpu_energy_data_t ginfo,
- uint64_t *task_energy)
+task_footprint_exceeded(int warning, __unused const void *param0, __unused const void *param1)
{
- thread_t thread;
- ledger_amount_t tmp;
+ ledger_amount_t max_footprint, max_footprint_mb;
+ task_t task;
+ boolean_t is_warning;
+ boolean_t memlimit_is_active;
+ boolean_t memlimit_is_fatal;
- task_lock_assert_owned(task);
+ if (warning == LEDGER_WARNING_DIPPED_BELOW) {
+ /*
+ * Task memory limits only provide a warning on the way up.
+ */
+ return;
+ } else if (warning == LEDGER_WARNING_ROSE_ABOVE) {
+ /*
+ * This task is in danger of violating a memory limit,
+ * It has exceeded a percentage level of the limit.
+ */
+ is_warning = TRUE;
+ } else {
+ /*
+ * The task has exceeded the physical footprint limit.
+ * This is not a warning but a true limit violation.
+ */
+ is_warning = FALSE;
+ }
- ledger_get_entries(task->ledger, task_ledgers.interrupt_wakeups,
- (ledger_amount_t *)&info->task_interrupt_wakeups, &tmp);
- ledger_get_entries(task->ledger, task_ledgers.platform_idle_wakeups,
- (ledger_amount_t *)&info->task_platform_idle_wakeups, &tmp);
+ task = current_task();
- info->task_timer_wakeups_bin_1 = task->task_timer_wakeups_bin_1;
- info->task_timer_wakeups_bin_2 = task->task_timer_wakeups_bin_2;
+ ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &max_footprint);
+ max_footprint_mb = max_footprint >> 20;
- info->total_user = task->total_user_time;
- info->total_system = task->total_system_time;
+ memlimit_is_active = task_get_memlimit_is_active(task);
+ memlimit_is_fatal = task_get_memlimit_is_fatal(task);
- if (task_energy) {
- *task_energy = task->task_energy;
+ /*
+ * If this is an actual violation (not a warning), then generate EXC_RESOURCE exception.
+ * We only generate the exception once per process per memlimit (active/inactive limit).
+ * To enforce this, we monitor state based on the memlimit's active/inactive attribute
+ * and we disable it by marking that memlimit as exception triggered.
+ */
+ if ((is_warning == FALSE) && (!task_has_triggered_exc_resource(task, memlimit_is_active))) {
+ PROC_CROSSED_HIGH_WATERMARK__SEND_EXC_RESOURCE_AND_SUSPEND((int)max_footprint_mb, memlimit_is_fatal);
+ memorystatus_log_exception((int)max_footprint_mb, memlimit_is_active, memlimit_is_fatal);
+ task_mark_has_triggered_exc_resource(task, memlimit_is_active);
}
- if (ginfo) {
- ginfo->task_gpu_utilisation = task->task_gpu_ns;
- }
+ memorystatus_on_ledger_footprint_exceeded(is_warning, memlimit_is_active, memlimit_is_fatal);
+}
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- uint64_t tval;
- spl_t x;
+extern int proc_check_footprint_priv(void);
- if (thread->options & TH_OPT_IDLE_THREAD)
- continue;
+kern_return_t
+task_set_phys_footprint_limit(
+ task_t task,
+ int new_limit_mb,
+ int *old_limit_mb)
+{
+ kern_return_t error;
- x = splsched();
- thread_lock(thread);
+ boolean_t memlimit_is_active;
+ boolean_t memlimit_is_fatal;
- info->task_timer_wakeups_bin_1 += thread->thread_timer_wakeups_bin_1;
- info->task_timer_wakeups_bin_2 += thread->thread_timer_wakeups_bin_2;
+ if ((error = proc_check_footprint_priv())) {
+ return KERN_NO_ACCESS;
+ }
- if (task_energy) {
- *task_energy += ml_energy_stat(thread);
- }
+ /*
+ * This call should probably be obsoleted.
+ * But for now, we default to current state.
+ */
+ memlimit_is_active = task_get_memlimit_is_active(task);
+ memlimit_is_fatal = task_get_memlimit_is_fatal(task);
- tval = timer_grab(&thread->user_timer);
- info->total_user += tval;
+ return task_set_phys_footprint_limit_internal(task, new_limit_mb, old_limit_mb, memlimit_is_active, memlimit_is_fatal);
+}
- tval = timer_grab(&thread->system_timer);
- if (thread->precise_user_kernel_time) {
- info->total_system += tval;
+kern_return_t
+task_convert_phys_footprint_limit(
+ int limit_mb,
+ int *converted_limit_mb)
+{
+ if (limit_mb == -1) {
+ /*
+ * No limit
+ */
+ if (max_task_footprint != 0) {
+ *converted_limit_mb = (int)(max_task_footprint / 1024 / 1024); /* bytes to MB */
} else {
- /* system_timer may represent either sys or user */
- info->total_user += tval;
- }
-
- if (ginfo) {
- ginfo->task_gpu_utilisation += ml_gpu_stat(thread);
+ *converted_limit_mb = (int)(LEDGER_LIMIT_INFINITY >> 20);
}
- thread_unlock(thread);
- splx(x);
+ } else {
+ /* nothing to convert */
+ *converted_limit_mb = limit_mb;
}
+ return KERN_SUCCESS;
}
-/*
- * task_gpu_utilisation
- *
- * Returns the total gpu time used by the all the threads of the task
- * (both dead and alive)
- */
-uint64_t
-task_gpu_utilisation(
- task_t task)
+
+kern_return_t
+task_set_phys_footprint_limit_internal(
+ task_t task,
+ int new_limit_mb,
+ int *old_limit_mb,
+ boolean_t memlimit_is_active,
+ boolean_t memlimit_is_fatal)
{
- uint64_t gpu_time = 0;
- thread_t thread;
+ ledger_amount_t old;
+ kern_return_t ret;
- task_lock(task);
- gpu_time += task->task_gpu_ns;
+ ret = ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &old);
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- spl_t x;
- x = splsched();
- thread_lock(thread);
- gpu_time += ml_gpu_stat(thread);
- thread_unlock(thread);
- splx(x);
+ if (ret != KERN_SUCCESS) {
+ return ret;
}
- task_unlock(task);
- return gpu_time;
-}
+ /*
+ * Check that limit >> 20 will not give an "unexpected" 32-bit
+ * result. There are, however, implicit assumptions that -1 mb limit
+ * equates to LEDGER_LIMIT_INFINITY.
+ */
+ assert(((old & 0xFFF0000000000000LL) == 0) || (old == LEDGER_LIMIT_INFINITY));
-/*
- * task_energy
- *
- * Returns the total energy used by the all the threads of the task
- * (both dead and alive)
- */
-uint64_t
-task_energy(
- task_t task)
-{
- uint64_t energy = 0;
- thread_t thread;
+ if (old_limit_mb) {
+ *old_limit_mb = (int)(old >> 20);
+ }
+
+ if (new_limit_mb == -1) {
+ /*
+ * Caller wishes to remove the limit.
+ */
+ ledger_set_limit(task->ledger, task_ledgers.phys_footprint,
+ max_task_footprint ? max_task_footprint : LEDGER_LIMIT_INFINITY,
+ max_task_footprint ? (uint8_t)max_task_footprint_warning_level : 0);
+
+ task_lock(task);
+ task_set_memlimit_is_active(task, memlimit_is_active);
+ task_set_memlimit_is_fatal(task, memlimit_is_fatal);
+ task_unlock(task);
+
+ return KERN_SUCCESS;
+ }
+
+#ifdef CONFIG_NOMONITORS
+ return KERN_SUCCESS;
+#endif /* CONFIG_NOMONITORS */
task_lock(task);
- energy += task->task_energy;
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- spl_t x;
- x = splsched();
- thread_lock(thread);
- energy += ml_energy_stat(thread);
- thread_unlock(thread);
- splx(x);
+ if ((memlimit_is_active == task_get_memlimit_is_active(task)) &&
+ (memlimit_is_fatal == task_get_memlimit_is_fatal(task)) &&
+ (((ledger_amount_t)new_limit_mb << 20) == old)) {
+ /*
+ * memlimit state is not changing
+ */
+ task_unlock(task);
+ return KERN_SUCCESS;
+ }
+
+ task_set_memlimit_is_active(task, memlimit_is_active);
+ task_set_memlimit_is_fatal(task, memlimit_is_fatal);
+
+ ledger_set_limit(task->ledger, task_ledgers.phys_footprint,
+ (ledger_amount_t)new_limit_mb << 20, PHYS_FOOTPRINT_WARNING_LEVEL);
+
+ if (task == current_task()) {
+ ledger_check_new_balance(current_thread(), task->ledger,
+ task_ledgers.phys_footprint);
}
task_unlock(task);
- return energy;
+
+ return KERN_SUCCESS;
}
kern_return_t
-task_purgable_info(
- task_t task,
- task_purgable_info_t *stats)
+task_get_phys_footprint_limit(
+ task_t task,
+ int *limit_mb)
{
- if (task == TASK_NULL || stats == NULL)
- return KERN_INVALID_ARGUMENT;
- /* Take task reference */
- task_reference(task);
- vm_purgeable_stats((vm_purgeable_info_t)stats, task);
- /* Drop task reference */
- task_deallocate(task);
+ ledger_amount_t limit;
+ kern_return_t ret;
+
+ ret = ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &limit);
+ if (ret != KERN_SUCCESS) {
+ return ret;
+ }
+
+ /*
+ * Check that limit >> 20 will not give an "unexpected" signed, 32-bit
+ * result. There are, however, implicit assumptions that -1 mb limit
+ * equates to LEDGER_LIMIT_INFINITY.
+ */
+ assert(((limit & 0xFFF0000000000000LL) == 0) || (limit == LEDGER_LIMIT_INFINITY));
+ *limit_mb = (int)(limit >> 20);
+
return KERN_SUCCESS;
}
+#else /* CONFIG_MEMORYSTATUS */
+kern_return_t
+task_set_phys_footprint_limit(
+ __unused task_t task,
+ __unused int new_limit_mb,
+ __unused int *old_limit_mb)
+{
+ return KERN_FAILURE;
+}
-void
-task_vtimer_set(
- task_t task,
- integer_t which)
+kern_return_t
+task_get_phys_footprint_limit(
+ __unused task_t task,
+ __unused int *limit_mb)
{
- thread_t thread;
- spl_t x;
+ return KERN_FAILURE;
+}
+#endif /* CONFIG_MEMORYSTATUS */
- task_lock(task);
+void
+task_set_thread_limit(task_t task, uint16_t thread_limit)
+{
+ assert(task != kernel_task);
+ if (thread_limit <= TASK_MAX_THREAD_LIMIT) {
+ task_lock(task);
+ task->task_thread_limit = thread_limit;
+ task_unlock(task);
+ }
+}
- task->vtimers |= which;
+#if XNU_TARGET_OS_OSX
+boolean_t
+task_has_system_version_compat_enabled(task_t task)
+{
+ boolean_t enabled = FALSE;
- switch (which) {
+ task_lock(task);
+ enabled = (task->t_flags & TF_SYS_VERSION_COMPAT);
+ task_unlock(task);
- case TASK_VTIMER_USER:
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- x = splsched();
- thread_lock(thread);
- if (thread->precise_user_kernel_time)
- thread->vtimer_user_save = timer_grab(&thread->user_timer);
- else
- thread->vtimer_user_save = timer_grab(&thread->system_timer);
- thread_unlock(thread);
- splx(x);
- }
- break;
+ return enabled;
+}
- case TASK_VTIMER_PROF:
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- x = splsched();
- thread_lock(thread);
- thread->vtimer_prof_save = timer_grab(&thread->user_timer);
- thread->vtimer_prof_save += timer_grab(&thread->system_timer);
- thread_unlock(thread);
- splx(x);
- }
- break;
+void
+task_set_system_version_compat_enabled(task_t task, boolean_t enable_system_version_compat)
+{
+ assert(task == current_task());
+ assert(task != kernel_task);
- case TASK_VTIMER_RLIM:
- queue_iterate(&task->threads, thread, thread_t, task_threads) {
- x = splsched();
- thread_lock(thread);
- thread->vtimer_rlim_save = timer_grab(&thread->user_timer);
- thread->vtimer_rlim_save += timer_grab(&thread->system_timer);
- thread_unlock(thread);
- splx(x);
- }
- break;
+ task_lock(task);
+ if (enable_system_version_compat) {
+ task->t_flags |= TF_SYS_VERSION_COMPAT;
+ } else {
+ task->t_flags &= ~TF_SYS_VERSION_COMPAT;
}
-
task_unlock(task);
}
+#endif /* XNU_TARGET_OS_OSX */
-void
-task_vtimer_clear(
- task_t task,
- integer_t which)
+/*
+ * We need to export some functions to other components that
+ * are currently implemented in macros within the osfmk
+ * component. Just export them as functions of the same name.
+ */
+boolean_t
+is_kerneltask(task_t t)
{
- assert(task == current_task());
+ if (t == kernel_task) {
+ return TRUE;
+ }
- task_lock(task);
+ return FALSE;
+}
- task->vtimers &= ~which;
+boolean_t
+is_corpsetask(task_t t)
+{
+ return task_is_a_corpse(t);
+}
- task_unlock(task);
+#undef current_task
+task_t current_task(void);
+task_t
+current_task(void)
+{
+ return current_task_fast();
}
+#undef task_reference
+void task_reference(task_t task);
void
-task_vtimer_update(
-__unused
- task_t task,
- integer_t which,
- uint32_t *microsecs)
+task_reference(
+ task_t task)
{
- thread_t thread = current_thread();
- uint32_t tdelt = 0;
- clock_sec_t secs = 0;
- uint64_t tsum;
-
- assert(task == current_task());
+ if (task != TASK_NULL) {
+ task_reference_internal(task);
+ }
+}
- spl_t s = splsched();
- thread_lock(thread);
+/* defined in bsd/kern/kern_prot.c */
+extern int get_audit_token_pid(audit_token_t *audit_token);
- if ((task->vtimers & which) != (uint32_t)which) {
- thread_unlock(thread);
- splx(s);
- return;
+int
+task_pid(task_t task)
+{
+ if (task) {
+ return get_audit_token_pid(&task->audit_token);
}
+ return -1;
+}
- switch (which) {
+#if __has_feature(ptrauth_calls)
+/*
+ * Get the shared region id and jop signing key for the task.
+ * The function will allocate a kalloc buffer and return
+ * it to caller, the caller needs to free it. This is used
+ * for getting the information via task port.
+ */
+char *
+task_get_vm_shared_region_id_and_jop_pid(task_t task, uint64_t *jop_pid)
+{
+ size_t len;
+ char *shared_region_id = NULL;
- case TASK_VTIMER_USER:
- if (thread->precise_user_kernel_time) {
- tdelt = (uint32_t)timer_delta(&thread->user_timer,
- &thread->vtimer_user_save);
- } else {
- tdelt = (uint32_t)timer_delta(&thread->system_timer,
- &thread->vtimer_user_save);
- }
- absolutetime_to_microtime(tdelt, &secs, microsecs);
- break;
+ task_lock(task);
+ if (task->shared_region_id == NULL) {
+ task_unlock(task);
+ return NULL;
+ }
+ len = strlen(task->shared_region_id) + 1;
- case TASK_VTIMER_PROF:
- tsum = timer_grab(&thread->user_timer);
- tsum += timer_grab(&thread->system_timer);
- tdelt = (uint32_t)(tsum - thread->vtimer_prof_save);
- absolutetime_to_microtime(tdelt, &secs, microsecs);
- /* if the time delta is smaller than a usec, ignore */
- if (*microsecs != 0)
- thread->vtimer_prof_save = tsum;
- break;
+ /* don't hold task lock while allocating */
+ task_unlock(task);
+ shared_region_id = kheap_alloc(KHEAP_DATA_BUFFERS, len, Z_WAITOK);
+ task_lock(task);
- case TASK_VTIMER_RLIM:
- tsum = timer_grab(&thread->user_timer);
- tsum += timer_grab(&thread->system_timer);
- tdelt = (uint32_t)(tsum - thread->vtimer_rlim_save);
- thread->vtimer_rlim_save = tsum;
- absolutetime_to_microtime(tdelt, &secs, microsecs);
- break;
+ if (task->shared_region_id == NULL) {
+ task_unlock(task);
+ kheap_free(KHEAP_DATA_BUFFERS, shared_region_id, len);
+ return NULL;
}
+ assert(len == strlen(task->shared_region_id) + 1); /* should never change */
+ strlcpy(shared_region_id, task->shared_region_id, len);
+ task_unlock(task);
- thread_unlock(thread);
- splx(s);
-}
+ /* find key from its auth pager */
+ if (jop_pid != NULL) {
+ *jop_pid = shared_region_find_key(shared_region_id);
+ }
-/*
- * task_assign:
- *
- * Change the assigned processor set for the task
- */
-kern_return_t
-task_assign(
- __unused task_t task,
- __unused processor_set_t new_pset,
- __unused boolean_t assign_threads)
-{
- return(KERN_FAILURE);
+ return shared_region_id;
}
/*
- * task_assign_default:
- *
- * Version of task_assign to assign to default processor set.
+ * set the shared region id for a task
*/
-kern_return_t
-task_assign_default(
- task_t task,
- boolean_t assign_threads)
+void
+task_set_shared_region_id(task_t task, char *id)
{
- return (task_assign(task, &pset0, assign_threads));
+ char *old_id;
+
+ task_lock(task);
+ old_id = task->shared_region_id;
+ task->shared_region_id = id;
+ task->shared_region_auth_remapped = FALSE;
+ task_unlock(task);
+
+ /* free any pre-existing shared region id */
+ if (old_id != NULL) {
+ shared_region_key_dealloc(old_id);
+ kheap_free(KHEAP_DATA_BUFFERS, old_id, strlen(old_id) + 1);
+ }
}
+#endif /* __has_feature(ptrauth_calls) */
/*
- * task_get_assignment
+ * This routine finds a thread in a task by its unique id
+ * Returns a referenced thread or THREAD_NULL if the thread was not found
*
- * Return name of processor set that task is assigned to.
+ * TODO: This is super inefficient - it's an O(threads in task) list walk!
+ * We should make a tid hash, or transition all tid clients to thread ports
+ *
+ * Precondition: No locks held (will take task lock)
*/
-kern_return_t
-task_get_assignment(
- task_t task,
- processor_set_t *pset)
+thread_t
+task_findtid(task_t task, uint64_t tid)
{
- if (!task || !task->active)
- return KERN_FAILURE;
+ thread_t self = current_thread();
+ thread_t found_thread = THREAD_NULL;
+ thread_t iter_thread = THREAD_NULL;
- *pset = &pset0;
+ /* Short-circuit the lookup if we're looking up ourselves */
+ if (tid == self->thread_id || tid == TID_NULL) {
+ assert(self->task == task);
- return KERN_SUCCESS;
-}
+ thread_reference(self);
-uint64_t
-get_task_dispatchqueue_offset(
- task_t task)
-{
- return task->dispatchqueue_offset;
+ return self;
+ }
+
+ task_lock(task);
+
+ queue_iterate(&task->threads, iter_thread, thread_t, task_threads) {
+ if (iter_thread->thread_id == tid) {
+ found_thread = iter_thread;
+ thread_reference(found_thread);
+ break;
+ }
+ }
+
+ task_unlock(task);
+
+ return found_thread;
}
-/*
- * task_policy
- *
- * Set scheduling policy and parameters, both base and limit, for
- * the given task. Policy must be a policy which is enabled for the
- * processor set. Change contained threads if requested.
- */
-kern_return_t
-task_policy(
- __unused task_t task,
- __unused policy_t policy_id,
- __unused policy_base_t base,
- __unused mach_msg_type_number_t count,
- __unused boolean_t set_limit,
- __unused boolean_t change)
+int
+pid_from_task(task_t task)
{
- return(KERN_FAILURE);
+ int pid = -1;
+
+ if (task->bsd_info) {
+ pid = proc_pid(task->bsd_info);
+ } else {
+ pid = task_pid(task);
+ }
+
+ return pid;
}
/*
- * task_set_policy
- *
- * Set scheduling policy and parameters, both base and limit, for
- * the given task. Policy can be any policy implemented by the
- * processor set, whether enabled or not. Change contained threads
- * if requested.
+ * Control the CPU usage monitor for a task.
*/
kern_return_t
-task_set_policy(
- __unused task_t task,
- __unused processor_set_t pset,
- __unused policy_t policy_id,
- __unused policy_base_t base,
- __unused mach_msg_type_number_t base_count,
- __unused policy_limit_t limit,
- __unused mach_msg_type_number_t limit_count,
- __unused boolean_t change)
+task_cpu_usage_monitor_ctl(task_t task, uint32_t *flags)
{
- return(KERN_FAILURE);
-}
+ int error = KERN_SUCCESS;
-kern_return_t
-task_set_ras_pc(
- __unused task_t task,
- __unused vm_offset_t pc,
- __unused vm_offset_t endpc)
-{
- return KERN_FAILURE;
-}
+ if (*flags & CPUMON_MAKE_FATAL) {
+ task->rusage_cpu_flags |= TASK_RUSECPU_FLAGS_FATAL_CPUMON;
+ } else {
+ error = KERN_INVALID_ARGUMENT;
+ }
-void
-task_synchronizer_destroy_all(task_t task)
-{
- /*
- * Destroy owned semaphores
- */
- semaphore_destroy_all(task);
+ return error;
}
/*
- * Install default (machine-dependent) initial thread state
- * on the task. Subsequent thread creation will have this initial
- * state set on the thread by machine_thread_inherit_taskwide().
- * Flavors and structures are exactly the same as those to thread_set_state()
+ * Control the wakeups monitor for a task.
*/
-kern_return_t
-task_set_state(
- task_t task,
- int flavor,
- thread_state_t state,
- mach_msg_type_number_t state_count)
+kern_return_t
+task_wakeups_monitor_ctl(task_t task, uint32_t *flags, int32_t *rate_hz)
{
- kern_return_t ret;
-
- if (task == TASK_NULL) {
- return (KERN_INVALID_ARGUMENT);
- }
+ ledger_t ledger = task->ledger;
task_lock(task);
+ if (*flags & WAKEMON_GET_PARAMS) {
+ ledger_amount_t limit;
+ uint64_t period;
- if (!task->active) {
+ ledger_get_limit(ledger, task_ledgers.interrupt_wakeups, &limit);
+ ledger_get_period(ledger, task_ledgers.interrupt_wakeups, &period);
+
+ if (limit != LEDGER_LIMIT_INFINITY) {
+ /*
+ * An active limit means the wakeups monitor is enabled.
+ */
+ *rate_hz = (int32_t)(limit / (int64_t)(period / NSEC_PER_SEC));
+ *flags = WAKEMON_ENABLE;
+ if (task->rusage_cpu_flags & TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON) {
+ *flags |= WAKEMON_MAKE_FATAL;
+ }
+ } else {
+ *flags = WAKEMON_DISABLE;
+ *rate_hz = -1;
+ }
+
+ /*
+ * If WAKEMON_GET_PARAMS is present in flags, all other flags are ignored.
+ */
task_unlock(task);
- return (KERN_FAILURE);
+ return KERN_SUCCESS;
}
- ret = machine_task_set_state(task, flavor, state, state_count);
+ if (*flags & WAKEMON_ENABLE) {
+ if (*flags & WAKEMON_SET_DEFAULTS) {
+ *rate_hz = task_wakeups_monitor_rate;
+ }
+
+#ifndef CONFIG_NOMONITORS
+ if (*flags & WAKEMON_MAKE_FATAL) {
+ task->rusage_cpu_flags |= TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON;
+ }
+#endif /* CONFIG_NOMONITORS */
+
+ if (*rate_hz <= 0) {
+ task_unlock(task);
+ return KERN_INVALID_ARGUMENT;
+ }
+
+#ifndef CONFIG_NOMONITORS
+ ledger_set_limit(ledger, task_ledgers.interrupt_wakeups, *rate_hz * task_wakeups_monitor_interval,
+ (uint8_t)task_wakeups_monitor_ustackshots_trigger_pct);
+ ledger_set_period(ledger, task_ledgers.interrupt_wakeups, task_wakeups_monitor_interval * NSEC_PER_SEC);
+ ledger_enable_callback(ledger, task_ledgers.interrupt_wakeups);
+#endif /* CONFIG_NOMONITORS */
+ } else if (*flags & WAKEMON_DISABLE) {
+ /*
+ * Caller wishes to disable wakeups monitor on the task.
+ *
+ * Disable telemetry if it was triggered by the wakeups monitor, and
+ * remove the limit & callback on the wakeups ledger entry.
+ */
+#if CONFIG_TELEMETRY
+ telemetry_task_ctl_locked(task, TF_WAKEMON_WARNING, 0);
+#endif
+ ledger_disable_refill(ledger, task_ledgers.interrupt_wakeups);
+ ledger_disable_callback(ledger, task_ledgers.interrupt_wakeups);
+ }
task_unlock(task);
- return ret;
+ return KERN_SUCCESS;
}
-/*
- * Examine the default (machine-dependent) initial thread state
- * on the task, as set by task_set_state(). Flavors and structures
- * are exactly the same as those passed to thread_get_state().
- */
-kern_return_t
-task_get_state(
- task_t task,
- int flavor,
- thread_state_t state,
- mach_msg_type_number_t *state_count)
+void
+task_wakeups_rate_exceeded(int warning, __unused const void *param0, __unused const void *param1)
{
- kern_return_t ret;
-
- if (task == TASK_NULL) {
- return (KERN_INVALID_ARGUMENT);
+ if (warning == LEDGER_WARNING_ROSE_ABOVE) {
+#if CONFIG_TELEMETRY
+ /*
+ * This task is in danger of violating the wakeups monitor. Enable telemetry on this task
+ * so there are micro-stackshots available if and when EXC_RESOURCE is triggered.
+ */
+ telemetry_task_ctl(current_task(), TF_WAKEMON_WARNING, 1);
+#endif
+ return;
}
- task_lock(task);
+#if CONFIG_TELEMETRY
+ /*
+ * If the balance has dipped below the warning level (LEDGER_WARNING_DIPPED_BELOW) or
+ * exceeded the limit, turn telemetry off for the task.
+ */
+ telemetry_task_ctl(current_task(), TF_WAKEMON_WARNING, 0);
+#endif
- if (!task->active) {
- task_unlock(task);
- return (KERN_FAILURE);
+ if (warning == 0) {
+ SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MANY_WAKEUPS();
}
-
- ret = machine_task_get_state(task, flavor, state, state_count);
-
- task_unlock(task);
- return ret;
}
-#if CONFIG_MEMORYSTATUS
-#define HWM_USERCORE_MINSPACE 250 // free space (in MB) required *after* core file creation
-
void __attribute__((noinline))
-PROC_CROSSED_HIGH_WATERMARK__SEND_EXC_RESOURCE_AND_SUSPEND(int max_footprint_mb, boolean_t is_fatal)
+SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MANY_WAKEUPS(void)
{
- task_t task = current_task();
- int pid = 0;
- const char *procname = "unknown";
- mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
+ task_t task = current_task();
+ int pid = 0;
+ const char *procname = "unknown";
+ boolean_t fatal;
+ kern_return_t kr;
+#ifdef EXC_RESOURCE_MONITORS
+ mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
+#endif /* EXC_RESOURCE_MONITORS */
+ struct ledger_entry_info lei;
#ifdef MACH_BSD
pid = proc_selfpid();
-
- if (pid == 1) {
- /*
- * Cannot have ReportCrash analyzing
- * a suspended initproc.
- */
- return;
- }
-
- if (task->bsd_info != NULL)
+ if (task->bsd_info != NULL) {
procname = proc_name_address(current_task()->bsd_info);
+ }
#endif
-#if CONFIG_COREDUMP
- if (hwm_user_cores) {
- int error;
- uint64_t starttime, end;
- clock_sec_t secs = 0;
- uint32_t microsecs = 0;
- starttime = mach_absolute_time();
- /*
- * Trigger a coredump of this process. Don't proceed unless we know we won't
- * be filling up the disk; and ignore the core size resource limit for this
- * core file.
- */
- if ((error = coredump(current_task()->bsd_info, HWM_USERCORE_MINSPACE, COREDUMP_IGNORE_ULIMIT)) != 0) {
- printf("couldn't take coredump of %s[%d]: %d\n", procname, pid, error);
- }
- /*
- * coredump() leaves the task suspended.
- */
- task_resume_internal(current_task());
+ ledger_get_entry_info(task->ledger, task_ledgers.interrupt_wakeups, &lei);
- end = mach_absolute_time();
- absolutetime_to_microtime(end - starttime, &secs, µsecs);
- printf("coredump of %s[%d] taken in %d secs %d microsecs\n",
- proc_name_address(current_task()->bsd_info), pid, (int)secs, microsecs);
+ /*
+ * Disable the exception notification so we don't overwhelm
+ * the listener with an endless stream of redundant exceptions.
+ * TODO: detect whether another thread is already reporting the violation.
+ */
+ uint32_t flags = WAKEMON_DISABLE;
+ task_wakeups_monitor_ctl(task, &flags, NULL);
+
+ fatal = task->rusage_cpu_flags & TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON;
+ trace_resource_violation(RMON_CPUWAKES_VIOLATED, &lei);
+ os_log(OS_LOG_DEFAULT, "process %s[%d] caught waking the CPU %llu times "
+ "over ~%llu seconds, averaging %llu wakes / second and "
+ "violating a %slimit of %llu wakes over %llu seconds.\n",
+ procname, pid,
+ lei.lei_balance, lei.lei_last_refill / NSEC_PER_SEC,
+ lei.lei_last_refill == 0 ? 0 :
+ (NSEC_PER_SEC * lei.lei_balance / lei.lei_last_refill),
+ fatal ? "FATAL " : "",
+ lei.lei_limit, lei.lei_refill_period / NSEC_PER_SEC);
+
+ kr = send_resource_violation(send_cpu_wakes_violation, task, &lei,
+ fatal ? kRNFatalLimitFlag : 0);
+ if (kr) {
+ printf("send_resource_violation(CPU wakes, ...): error %#x\n", kr);
}
-#endif /* CONFIG_COREDUMP */
+#ifdef EXC_RESOURCE_MONITORS
if (disable_exc_resource) {
- printf("process %s[%d] crossed memory high watermark (%d MB); EXC_RESOURCE "
- "supressed by a boot-arg.\n", procname, pid, max_footprint_mb);
+ printf("process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
+ "supressed by a boot-arg\n", procname, pid);
return;
}
-
- /*
- * A task that has triggered an EXC_RESOURCE, should not be
- * jetsammed when the device is under memory pressure. Here
- * we set the P_MEMSTAT_TERMINATED flag so that the process
- * will be skipped if the memorystatus_thread wakes up.
- */
- proc_memstat_terminated(current_task()->bsd_info, TRUE);
-
- printf("process %s[%d] crossed memory high watermark (%d MB); sending "
- "EXC_RESOURCE.\n", procname, pid, max_footprint_mb);
+ if (audio_active) {
+ os_log(OS_LOG_DEFAULT, "process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
+ "supressed due to audio playback\n", procname, pid);
+ return;
+ }
+ if (lei.lei_last_refill == 0) {
+ os_log(OS_LOG_DEFAULT, "process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
+ "supressed due to lei.lei_last_refill = 0 \n", procname, pid);
+ }
code[0] = code[1] = 0;
- EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_MEMORY);
- EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_HIGH_WATERMARK);
- EXC_RESOURCE_HWM_ENCODE_LIMIT(code[0], max_footprint_mb);
+ EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_WAKEUPS);
+ EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_WAKEUPS_MONITOR);
+ EXC_RESOURCE_CPUMONITOR_ENCODE_WAKEUPS_PERMITTED(code[0],
+ NSEC_PER_SEC * lei.lei_limit / lei.lei_refill_period);
+ EXC_RESOURCE_CPUMONITOR_ENCODE_OBSERVATION_INTERVAL(code[0],
+ lei.lei_last_refill);
+ EXC_RESOURCE_CPUMONITOR_ENCODE_WAKEUPS_OBSERVED(code[1],
+ NSEC_PER_SEC * lei.lei_balance / lei.lei_last_refill);
+ exception_triage(EXC_RESOURCE, code, EXCEPTION_CODE_MAX);
+#endif /* EXC_RESOURCE_MONITORS */
- /* Do not generate a corpse fork if the violation is a fatal one */
- if (is_fatal || exc_via_corpse_forking == 0) {
- /* Do not send a EXC_RESOURCE is corpse_for_fatal_memkill is set */
- if (corpse_for_fatal_memkill == 0) {
- /*
- * Use the _internal_ variant so that no user-space
- * process can resume our task from under us.
- */
- task_suspend_internal(task);
- exception_triage(EXC_RESOURCE, code, EXCEPTION_CODE_MAX);
- task_resume_internal(task);
- }
- } else {
- task_enqueue_exception_with_corpse(task, code, EXCEPTION_CODE_MAX);
+ if (fatal) {
+ task_terminate_internal(task);
}
+}
- /*
- * After the EXC_RESOURCE has been handled, we must clear the
- * P_MEMSTAT_TERMINATED flag so that the process can again be
- * considered for jetsam if the memorystatus_thread wakes up.
- */
- proc_memstat_terminated(current_task()->bsd_info, FALSE); /* clear the flag */
+static boolean_t
+global_update_logical_writes(int64_t io_delta, int64_t *global_write_count)
+{
+ int64_t old_count, new_count;
+ boolean_t needs_telemetry;
+
+ do {
+ new_count = old_count = *global_write_count;
+ new_count += io_delta;
+ if (new_count >= io_telemetry_limit) {
+ new_count = 0;
+ needs_telemetry = TRUE;
+ } else {
+ needs_telemetry = FALSE;
+ }
+ } while (!OSCompareAndSwap64(old_count, new_count, global_write_count));
+ return needs_telemetry;
}
-/*
- * Callback invoked when a task exceeds its physical footprint limit.
- */
void
-task_footprint_exceeded(int warning, __unused const void *param0, __unused const void *param1)
+task_update_physical_writes(__unused task_t task, __unused task_physical_write_flavor_t flavor, __unused uint64_t io_size, __unused task_balance_flags_t flags)
{
- ledger_amount_t max_footprint, max_footprint_mb;
- task_t task;
- boolean_t is_fatal;
- boolean_t trigger_exception;
-
- if (warning == LEDGER_WARNING_DIPPED_BELOW) {
- /*
- * Task memory limits only provide a warning on the way up.
- */
+#if CONFIG_PHYS_WRITE_ACCT
+ if (!io_size) {
return;
}
- task = current_task();
-
- ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &max_footprint);
- max_footprint_mb = max_footprint >> 20;
-
/*
- * Capture the trigger exception flag before turning off the exception.
+ * task == NULL means that we have to update kernel_task ledgers
*/
- trigger_exception = task->rusage_cpu_flags & TASK_RUSECPU_FLAGS_PHYS_FOOTPRINT_EXCEPTION ? TRUE : FALSE;
+ if (!task) {
+ task = kernel_task;
+ }
- is_fatal = memorystatus_turnoff_exception_and_get_fatalness((warning == LEDGER_WARNING_ROSE_ABOVE) ? TRUE : FALSE, (int)max_footprint_mb);
+ KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, VM_PHYS_WRITE_ACCT)) | DBG_FUNC_NONE,
+ task_pid(task), flavor, io_size, flags, 0);
+ DTRACE_IO4(physical_writes, struct task *, task, task_physical_write_flavor_t, flavor, uint64_t, io_size, task_balance_flags_t, flags);
- /*
- * If this an actual violation (not a warning),
- * generate a non-fatal high watermark EXC_RESOURCE.
- */
- if ((warning == 0) && trigger_exception) {
- PROC_CROSSED_HIGH_WATERMARK__SEND_EXC_RESOURCE_AND_SUSPEND((int)max_footprint_mb, is_fatal);
+ if (flags & TASK_BALANCE_CREDIT) {
+ if (flavor == TASK_PHYSICAL_WRITE_METADATA) {
+ OSAddAtomic64(io_size, (SInt64 *)&(task->task_fs_metadata_writes));
+ ledger_credit_nocheck(task->ledger, task_ledgers.fs_metadata_writes, io_size);
+ }
+ } else if (flags & TASK_BALANCE_DEBIT) {
+ if (flavor == TASK_PHYSICAL_WRITE_METADATA) {
+ OSAddAtomic64(-1 * io_size, (SInt64 *)&(task->task_fs_metadata_writes));
+ ledger_debit_nocheck(task->ledger, task_ledgers.fs_metadata_writes, io_size);
+ }
}
-
- memorystatus_on_ledger_footprint_exceeded((warning == LEDGER_WARNING_ROSE_ABOVE) ? TRUE : FALSE,
- is_fatal);
+#endif /* CONFIG_PHYS_WRITE_ACCT */
}
-extern int proc_check_footprint_priv(void);
-
-kern_return_t
-task_set_phys_footprint_limit(
- task_t task,
- int new_limit_mb,
- int *old_limit_mb)
+void
+task_update_logical_writes(task_t task, uint32_t io_size, int flags, void *vp)
{
- kern_return_t error;
+ int64_t io_delta = 0;
+ int64_t * global_counter_to_update;
+ boolean_t needs_telemetry = FALSE;
+ boolean_t is_external_device = FALSE;
+ int ledger_to_update = 0;
+ struct task_writes_counters * writes_counters_to_update;
- if ((error = proc_check_footprint_priv())) {
- return (KERN_NO_ACCESS);
+ if ((!task) || (!io_size) || (!vp)) {
+ return;
+ }
+
+ KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, VM_DATA_WRITE)) | DBG_FUNC_NONE,
+ task_pid(task), io_size, flags, (uintptr_t)VM_KERNEL_ADDRPERM(vp), 0);
+ DTRACE_IO4(logical_writes, struct task *, task, uint32_t, io_size, int, flags, vnode *, vp);
+
+ // Is the drive backing this vnode internal or external to the system?
+ if (vnode_isonexternalstorage(vp) == false) {
+ global_counter_to_update = &global_logical_writes_count;
+ ledger_to_update = task_ledgers.logical_writes;
+ writes_counters_to_update = &task->task_writes_counters_internal;
+ is_external_device = FALSE;
+ } else {
+ global_counter_to_update = &global_logical_writes_to_external_count;
+ ledger_to_update = task_ledgers.logical_writes_to_external;
+ writes_counters_to_update = &task->task_writes_counters_external;
+ is_external_device = TRUE;
+ }
+
+ switch (flags) {
+ case TASK_WRITE_IMMEDIATE:
+ OSAddAtomic64(io_size, (SInt64 *)&(writes_counters_to_update->task_immediate_writes));
+ ledger_credit(task->ledger, ledger_to_update, io_size);
+ if (!is_external_device) {
+ coalition_io_ledger_update(task, FLAVOR_IO_LOGICAL_WRITES, TRUE, io_size);
+ }
+ break;
+ case TASK_WRITE_DEFERRED:
+ OSAddAtomic64(io_size, (SInt64 *)&(writes_counters_to_update->task_deferred_writes));
+ ledger_credit(task->ledger, ledger_to_update, io_size);
+ if (!is_external_device) {
+ coalition_io_ledger_update(task, FLAVOR_IO_LOGICAL_WRITES, TRUE, io_size);
+ }
+ break;
+ case TASK_WRITE_INVALIDATED:
+ OSAddAtomic64(io_size, (SInt64 *)&(writes_counters_to_update->task_invalidated_writes));
+ ledger_debit(task->ledger, ledger_to_update, io_size);
+ if (!is_external_device) {
+ coalition_io_ledger_update(task, FLAVOR_IO_LOGICAL_WRITES, FALSE, io_size);
+ }
+ break;
+ case TASK_WRITE_METADATA:
+ OSAddAtomic64(io_size, (SInt64 *)&(writes_counters_to_update->task_metadata_writes));
+ ledger_credit(task->ledger, ledger_to_update, io_size);
+ if (!is_external_device) {
+ coalition_io_ledger_update(task, FLAVOR_IO_LOGICAL_WRITES, TRUE, io_size);
+ }
+ break;
}
- return task_set_phys_footprint_limit_internal(task, new_limit_mb, old_limit_mb, FALSE);
+ io_delta = (flags == TASK_WRITE_INVALIDATED) ? ((int64_t)io_size * -1ll) : ((int64_t)io_size);
+ if (io_telemetry_limit != 0) {
+ /* If io_telemetry_limit is 0, disable global updates and I/O telemetry */
+ needs_telemetry = global_update_logical_writes(io_delta, global_counter_to_update);
+ if (needs_telemetry && !is_external_device) {
+ act_set_io_telemetry_ast(current_thread());
+ }
+ }
}
+/*
+ * Control the I/O monitor for a task.
+ */
kern_return_t
-task_convert_phys_footprint_limit(
- int limit_mb,
- int *converted_limit_mb)
+task_io_monitor_ctl(task_t task, uint32_t *flags)
{
- if (limit_mb == -1) {
+ ledger_t ledger = task->ledger;
+
+ task_lock(task);
+ if (*flags & IOMON_ENABLE) {
+ /* Configure the physical I/O ledger */
+ ledger_set_limit(ledger, task_ledgers.physical_writes, (task_iomon_limit_mb * 1024 * 1024), 0);
+ ledger_set_period(ledger, task_ledgers.physical_writes, (task_iomon_interval_secs * NSEC_PER_SEC));
+ } else if (*flags & IOMON_DISABLE) {
/*
- * No limit
+ * Caller wishes to disable I/O monitor on the task.
*/
- if (max_task_footprint != 0) {
- *converted_limit_mb = (int)(max_task_footprint / 1024 / 1024); /* bytes to MB */
- } else {
- *converted_limit_mb = (int)(LEDGER_LIMIT_INFINITY >> 20);
- }
- } else {
- /* nothing to convert */
- *converted_limit_mb = limit_mb;
+ ledger_disable_refill(ledger, task_ledgers.physical_writes);
+ ledger_disable_callback(ledger, task_ledgers.physical_writes);
}
- return (KERN_SUCCESS);
-}
+ task_unlock(task);
+ return KERN_SUCCESS;
+}
-kern_return_t
-task_set_phys_footprint_limit_internal(
- task_t task,
- int new_limit_mb,
- int *old_limit_mb,
- boolean_t trigger_exception)
+void
+task_io_rate_exceeded(int warning, const void *param0, __unused const void *param1)
{
- ledger_amount_t old;
-
- ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &old);
-
- if (old_limit_mb) {
- /*
- * Check that limit >> 20 will not give an "unexpected" 32-bit
- * result. There are, however, implicit assumptions that -1 mb limit
- * equates to LEDGER_LIMIT_INFINITY.
- */
- assert(((old & 0xFFF0000000000000LL) == 0) || (old == LEDGER_LIMIT_INFINITY));
- *old_limit_mb = (int)(old >> 20);
+ if (warning == 0) {
+ SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MUCH_IO((int)param0);
}
+}
+
+void __attribute__((noinline))
+SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MUCH_IO(int flavor)
+{
+ int pid = 0;
+ task_t task = current_task();
+#ifdef EXC_RESOURCE_MONITORS
+ mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
+#endif /* EXC_RESOURCE_MONITORS */
+ struct ledger_entry_info lei;
+ kern_return_t kr;
- if (new_limit_mb == -1) {
- /*
- * Caller wishes to remove the limit.
- */
- ledger_set_limit(task->ledger, task_ledgers.phys_footprint,
- max_task_footprint ? max_task_footprint : LEDGER_LIMIT_INFINITY,
- max_task_footprint ? max_task_footprint_warning_level : 0);
- return (KERN_SUCCESS);
+#ifdef MACH_BSD
+ pid = proc_selfpid();
+#endif
+ /*
+ * Get the ledger entry info. We need to do this before disabling the exception
+ * to get correct values for all fields.
+ */
+ switch (flavor) {
+ case FLAVOR_IO_PHYSICAL_WRITES:
+ ledger_get_entry_info(task->ledger, task_ledgers.physical_writes, &lei);
+ break;
}
-#ifdef CONFIG_NOMONITORS
- return (KERN_SUCCESS);
-#endif /* CONFIG_NOMONITORS */
- task_lock(task);
+ /*
+ * Disable the exception notification so we don't overwhelm
+ * the listener with an endless stream of redundant exceptions.
+ * TODO: detect whether another thread is already reporting the violation.
+ */
+ uint32_t flags = IOMON_DISABLE;
+ task_io_monitor_ctl(task, &flags);
- if (trigger_exception) {
- task->rusage_cpu_flags |= TASK_RUSECPU_FLAGS_PHYS_FOOTPRINT_EXCEPTION;
- } else {
- task->rusage_cpu_flags &= ~TASK_RUSECPU_FLAGS_PHYS_FOOTPRINT_EXCEPTION;
+ if (flavor == FLAVOR_IO_LOGICAL_WRITES) {
+ trace_resource_violation(RMON_LOGWRITES_VIOLATED, &lei);
}
+ os_log(OS_LOG_DEFAULT, "process [%d] caught causing excessive I/O (flavor: %d). Task I/O: %lld MB. [Limit : %lld MB per %lld secs]\n",
+ pid, flavor, (lei.lei_balance / (1024 * 1024)), (lei.lei_limit / (1024 * 1024)), (lei.lei_refill_period / NSEC_PER_SEC));
- ledger_set_limit(task->ledger, task_ledgers.phys_footprint,
- (ledger_amount_t)new_limit_mb << 20, PHYS_FOOTPRINT_WARNING_LEVEL);
-
- if (task == current_task()) {
- ledger_check_new_balance(task->ledger, task_ledgers.phys_footprint);
- }
-
- task_unlock(task);
+ kr = send_resource_violation(send_disk_writes_violation, task, &lei, kRNFlagsNone);
+ if (kr) {
+ printf("send_resource_violation(disk_writes, ...): error %#x\n", kr);
+ }
- return (KERN_SUCCESS);
+#ifdef EXC_RESOURCE_MONITORS
+ code[0] = code[1] = 0;
+ EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_IO);
+ EXC_RESOURCE_ENCODE_FLAVOR(code[0], flavor);
+ EXC_RESOURCE_IO_ENCODE_INTERVAL(code[0], (lei.lei_refill_period / NSEC_PER_SEC));
+ EXC_RESOURCE_IO_ENCODE_LIMIT(code[0], (lei.lei_limit / (1024 * 1024)));
+ EXC_RESOURCE_IO_ENCODE_OBSERVED(code[1], (lei.lei_balance / (1024 * 1024)));
+ exception_triage(EXC_RESOURCE, code, EXCEPTION_CODE_MAX);
+#endif /* EXC_RESOURCE_MONITORS */
}
+/* Placeholders for the task set/get voucher interfaces */
kern_return_t
-task_get_phys_footprint_limit(
- task_t task,
- int *limit_mb)
+task_get_mach_voucher(
+ task_t task,
+ mach_voucher_selector_t __unused which,
+ ipc_voucher_t *voucher)
{
- ledger_amount_t limit;
-
- ledger_get_limit(task->ledger, task_ledgers.phys_footprint, &limit);
- /*
- * Check that limit >> 20 will not give an "unexpected" signed, 32-bit
- * result. There are, however, implicit assumptions that -1 mb limit
- * equates to LEDGER_LIMIT_INFINITY.
- */
- assert(((limit & 0xFFF0000000000000LL) == 0) || (limit == LEDGER_LIMIT_INFINITY));
- *limit_mb = (int)(limit >> 20);
-
- return (KERN_SUCCESS);
+ if (TASK_NULL == task) {
+ return KERN_INVALID_TASK;
+ }
+
+ *voucher = NULL;
+ return KERN_SUCCESS;
}
-#else /* CONFIG_MEMORYSTATUS */
+
kern_return_t
-task_set_phys_footprint_limit(
- __unused task_t task,
- __unused int new_limit_mb,
- __unused int *old_limit_mb)
+task_set_mach_voucher(
+ task_t task,
+ ipc_voucher_t __unused voucher)
{
- return (KERN_FAILURE);
+ if (TASK_NULL == task) {
+ return KERN_INVALID_TASK;
+ }
+
+ return KERN_SUCCESS;
}
kern_return_t
-task_get_phys_footprint_limit(
- __unused task_t task,
- __unused int *limit_mb)
+task_swap_mach_voucher(
+ __unused task_t task,
+ __unused ipc_voucher_t new_voucher,
+ ipc_voucher_t *in_out_old_voucher)
{
- return (KERN_FAILURE);
+ /*
+ * Currently this function is only called from a MIG generated
+ * routine which doesn't release the reference on the voucher
+ * addressed by in_out_old_voucher. To avoid leaking this reference,
+ * a call to release it has been added here.
+ */
+ ipc_voucher_release(*in_out_old_voucher);
+ return KERN_NOT_SUPPORTED;
}
-#endif /* CONFIG_MEMORYSTATUS */
-/*
- * We need to export some functions to other components that
- * are currently implemented in macros within the osfmk
- * component. Just export them as functions of the same name.
- */
-boolean_t is_kerneltask(task_t t)
+void
+task_set_gpu_denied(task_t task, boolean_t denied)
{
- if (t == kernel_task)
- return (TRUE);
-
- return (FALSE);
-}
+ task_lock(task);
-boolean_t is_corpsetask(task_t t)
-{
- return (task_is_a_corpse(t));
-}
+ if (denied) {
+ task->t_flags |= TF_GPU_DENIED;
+ } else {
+ task->t_flags &= ~TF_GPU_DENIED;
+ }
-#undef current_task
-task_t current_task(void);
-task_t current_task(void)
-{
- return (current_task_fast());
+ task_unlock(task);
}
-#undef task_reference
-void task_reference(task_t task);
-void
-task_reference(
- task_t task)
+boolean_t
+task_is_gpu_denied(task_t task)
{
- if (task != TASK_NULL)
- task_reference_internal(task);
+ /* We don't need the lock to read this flag */
+ return (task->t_flags & TF_GPU_DENIED) ? TRUE : FALSE;
}
-/* defined in bsd/kern/kern_prot.c */
-extern int get_audit_token_pid(audit_token_t *audit_token);
-int task_pid(task_t task)
+uint64_t
+get_task_memory_region_count(task_t task)
{
- if (task)
- return get_audit_token_pid(&task->audit_token);
- return -1;
+ vm_map_t map;
+ map = (task == kernel_task) ? kernel_map: task->map;
+ return (uint64_t)get_map_nentries(map);
}
-
-/*
- * This routine finds a thread in a task by its unique id
- * Returns a referenced thread or THREAD_NULL if the thread was not found
- *
- * TODO: This is super inefficient - it's an O(threads in task) list walk!
- * We should make a tid hash, or transition all tid clients to thread ports
- *
- * Precondition: No locks held (will take task lock)
- */
-thread_t
-task_findtid(task_t task, uint64_t tid)
+static void
+kdebug_trace_dyld_internal(uint32_t base_code,
+ struct dyld_kernel_image_info *info)
{
- thread_t self = current_thread();
- thread_t found_thread = THREAD_NULL;
- thread_t iter_thread = THREAD_NULL;
-
- /* Short-circuit the lookup if we're looking up ourselves */
- if (tid == self->thread_id || tid == TID_NULL) {
- assert(self->task == task);
-
- thread_reference(self);
-
- return self;
- }
-
- task_lock(task);
+ static_assert(sizeof(info->uuid) >= 16);
- queue_iterate(&task->threads, iter_thread, thread_t, task_threads) {
- if (iter_thread->thread_id == tid) {
- found_thread = iter_thread;
- thread_reference(found_thread);
- break;
- }
- }
+#if defined(__LP64__)
+ uint64_t *uuid = (uint64_t *)&(info->uuid);
- task_unlock(task);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code), uuid[0],
+ uuid[1], info->load_addr,
+ (uint64_t)info->fsid.val[0] | ((uint64_t)info->fsid.val[1] << 32),
+ 0);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 1),
+ (uint64_t)info->fsobjid.fid_objno |
+ ((uint64_t)info->fsobjid.fid_generation << 32),
+ 0, 0, 0, 0);
+#else /* defined(__LP64__) */
+ uint32_t *uuid = (uint32_t *)&(info->uuid);
- return (found_thread);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 2), uuid[0],
+ uuid[1], uuid[2], uuid[3], 0);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 3),
+ (uint32_t)info->load_addr, info->fsid.val[0], info->fsid.val[1],
+ info->fsobjid.fid_objno, 0);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 4),
+ info->fsobjid.fid_generation, 0, 0, 0, 0);
+#endif /* !defined(__LP64__) */
}
-
-/*
- * Control the CPU usage monitor for a task.
- */
-kern_return_t
-task_cpu_usage_monitor_ctl(task_t task, uint32_t *flags)
+static kern_return_t
+kdebug_trace_dyld(task_t task, uint32_t base_code,
+ vm_map_copy_t infos_copy, mach_msg_type_number_t infos_len)
{
- int error = KERN_SUCCESS;
+ kern_return_t kr;
+ dyld_kernel_image_info_array_t infos;
+ vm_map_offset_t map_data;
+ vm_offset_t data;
- if (*flags & CPUMON_MAKE_FATAL) {
- task->rusage_cpu_flags |= TASK_RUSECPU_FLAGS_FATAL_CPUMON;
- } else {
- error = KERN_INVALID_ARGUMENT;
+ if (!infos_copy) {
+ return KERN_INVALID_ADDRESS;
}
- return error;
-}
-
-/*
- * Control the wakeups monitor for a task.
- */
-kern_return_t
-task_wakeups_monitor_ctl(task_t task, uint32_t *flags, int32_t *rate_hz)
-{
- ledger_t ledger = task->ledger;
-
- task_lock(task);
- if (*flags & WAKEMON_GET_PARAMS) {
- ledger_amount_t limit;
- uint64_t period;
-
- ledger_get_limit(ledger, task_ledgers.interrupt_wakeups, &limit);
- ledger_get_period(ledger, task_ledgers.interrupt_wakeups, &period);
-
- if (limit != LEDGER_LIMIT_INFINITY) {
- /*
- * An active limit means the wakeups monitor is enabled.
- */
- *rate_hz = (int32_t)(limit / (int64_t)(period / NSEC_PER_SEC));
- *flags = WAKEMON_ENABLE;
- if (task->rusage_cpu_flags & TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON) {
- *flags |= WAKEMON_MAKE_FATAL;
- }
- } else {
- *flags = WAKEMON_DISABLE;
- *rate_hz = -1;
- }
-
- /*
- * If WAKEMON_GET_PARAMS is present in flags, all other flags are ignored.
- */
- task_unlock(task);
+ if (!kdebug_enable ||
+ !kdebug_debugid_enabled(KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, 0))) {
+ vm_map_copy_discard(infos_copy);
return KERN_SUCCESS;
}
- if (*flags & WAKEMON_ENABLE) {
- if (*flags & WAKEMON_SET_DEFAULTS) {
- *rate_hz = task_wakeups_monitor_rate;
- }
-
-#ifndef CONFIG_NOMONITORS
- if (*flags & WAKEMON_MAKE_FATAL) {
- task->rusage_cpu_flags |= TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON;
- }
-#endif /* CONFIG_NOMONITORS */
+ if (task == NULL || task != current_task()) {
+ return KERN_INVALID_TASK;
+ }
- if (*rate_hz <= 0) {
- task_unlock(task);
- return KERN_INVALID_ARGUMENT;
- }
+ kr = vm_map_copyout(ipc_kernel_map, &map_data, (vm_map_copy_t)infos_copy);
+ if (kr != KERN_SUCCESS) {
+ return kr;
+ }
-#ifndef CONFIG_NOMONITORS
- ledger_set_limit(ledger, task_ledgers.interrupt_wakeups, *rate_hz * task_wakeups_monitor_interval,
- task_wakeups_monitor_ustackshots_trigger_pct);
- ledger_set_period(ledger, task_ledgers.interrupt_wakeups, task_wakeups_monitor_interval * NSEC_PER_SEC);
- ledger_enable_callback(ledger, task_ledgers.interrupt_wakeups);
-#endif /* CONFIG_NOMONITORS */
- } else if (*flags & WAKEMON_DISABLE) {
- /*
- * Caller wishes to disable wakeups monitor on the task.
- *
- * Disable telemetry if it was triggered by the wakeups monitor, and
- * remove the limit & callback on the wakeups ledger entry.
- */
-#if CONFIG_TELEMETRY
- telemetry_task_ctl_locked(task, TF_WAKEMON_WARNING, 0);
-#endif
- ledger_disable_refill(ledger, task_ledgers.interrupt_wakeups);
- ledger_disable_callback(ledger, task_ledgers.interrupt_wakeups);
+ infos = CAST_DOWN(dyld_kernel_image_info_array_t, map_data);
+
+ for (mach_msg_type_number_t i = 0; i < infos_len; i++) {
+ kdebug_trace_dyld_internal(base_code, &(infos[i]));
}
- task_unlock(task);
+ data = CAST_DOWN(vm_offset_t, map_data);
+ mach_vm_deallocate(ipc_kernel_map, data, infos_len * sizeof(infos[0]));
return KERN_SUCCESS;
}
-void
-task_wakeups_rate_exceeded(int warning, __unused const void *param0, __unused const void *param1)
+kern_return_t
+task_register_dyld_image_infos(task_t task,
+ dyld_kernel_image_info_array_t infos_copy,
+ mach_msg_type_number_t infos_len)
{
- if (warning == LEDGER_WARNING_ROSE_ABOVE) {
-#if CONFIG_TELEMETRY
- /*
- * This task is in danger of violating the wakeups monitor. Enable telemetry on this task
- * so there are micro-stackshots available if and when EXC_RESOURCE is triggered.
- */
- telemetry_task_ctl(current_task(), TF_WAKEMON_WARNING, 1);
-#endif
- return;
- }
+ return kdebug_trace_dyld(task, DBG_DYLD_UUID_MAP_A,
+ (vm_map_copy_t)infos_copy, infos_len);
+}
-#if CONFIG_TELEMETRY
- /*
- * If the balance has dipped below the warning level (LEDGER_WARNING_DIPPED_BELOW) or
- * exceeded the limit, turn telemetry off for the task.
- */
- telemetry_task_ctl(current_task(), TF_WAKEMON_WARNING, 0);
-#endif
+kern_return_t
+task_unregister_dyld_image_infos(task_t task,
+ dyld_kernel_image_info_array_t infos_copy,
+ mach_msg_type_number_t infos_len)
+{
+ return kdebug_trace_dyld(task, DBG_DYLD_UUID_UNMAP_A,
+ (vm_map_copy_t)infos_copy, infos_len);
+}
- if (warning == 0) {
- SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MANY_WAKEUPS();
- }
+kern_return_t
+task_get_dyld_image_infos(__unused task_t task,
+ __unused dyld_kernel_image_info_array_t * dyld_images,
+ __unused mach_msg_type_number_t * dyld_imagesCnt)
+{
+ return KERN_NOT_SUPPORTED;
}
-void __attribute__((noinline))
-SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MANY_WAKEUPS(void)
+kern_return_t
+task_register_dyld_shared_cache_image_info(task_t task,
+ dyld_kernel_image_info_t cache_img,
+ __unused boolean_t no_cache,
+ __unused boolean_t private_cache)
{
- task_t task = current_task();
- int pid = 0;
- const char *procname = "unknown";
- boolean_t fatal;
- kern_return_t kr;
-#ifdef EXC_RESOURCE_MONITORS
- mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
-#endif /* EXC_RESOURCE_MONITORS */
- struct ledger_entry_info lei;
+ if (task == NULL || task != current_task()) {
+ return KERN_INVALID_TASK;
+ }
-#ifdef MACH_BSD
- pid = proc_selfpid();
- if (task->bsd_info != NULL)
- procname = proc_name_address(current_task()->bsd_info);
-#endif
+ kdebug_trace_dyld_internal(DBG_DYLD_UUID_SHARED_CACHE_A, &cache_img);
+ return KERN_SUCCESS;
+}
- ledger_get_entry_info(task->ledger, task_ledgers.interrupt_wakeups, &lei);
+kern_return_t
+task_register_dyld_set_dyld_state(__unused task_t task,
+ __unused uint8_t dyld_state)
+{
+ return KERN_NOT_SUPPORTED;
+}
- /*
- * Disable the exception notification so we don't overwhelm
- * the listener with an endless stream of redundant exceptions.
- * TODO: detect whether another thread is already reporting the violation.
- */
- uint32_t flags = WAKEMON_DISABLE;
- task_wakeups_monitor_ctl(task, &flags, NULL);
+kern_return_t
+task_register_dyld_get_process_state(__unused task_t task,
+ __unused dyld_kernel_process_info_t * dyld_process_state)
+{
+ return KERN_NOT_SUPPORTED;
+}
- fatal = task->rusage_cpu_flags & TASK_RUSECPU_FLAGS_FATAL_WAKEUPSMON;
- trace_resource_violation(RMON_CPUWAKES_VIOLATED, &lei);
- printf("process %s[%d] caught waking the CPU %llu times "
- "over ~%llu seconds, averaging %llu wakes / second and "
- "violating a %slimit of %llu wakes over %llu seconds.\n",
- procname, pid,
- lei.lei_balance, lei.lei_last_refill / NSEC_PER_SEC,
- lei.lei_last_refill == 0 ? 0 :
- (NSEC_PER_SEC * lei.lei_balance / lei.lei_last_refill),
- fatal ? "FATAL " : "",
- lei.lei_limit, lei.lei_refill_period / NSEC_PER_SEC);
+kern_return_t
+task_inspect(task_inspect_t task_insp, task_inspect_flavor_t flavor,
+ task_inspect_info_t info_out, mach_msg_type_number_t *size_in_out)
+{
+#if MONOTONIC
+ task_t task = (task_t)task_insp;
+ kern_return_t kr = KERN_SUCCESS;
+ mach_msg_type_number_t size;
- kr = send_resource_violation(send_cpu_wakes_violation, task, &lei,
- fatal ? kRNFatalLimitFlag : 0);
- if (kr) {
- printf("send_resource_violation(CPU wakes, ...): error %#x\n", kr);
+ if (task == TASK_NULL) {
+ return KERN_INVALID_ARGUMENT;
}
-#ifdef EXC_RESOURCE_MONITORS
- if (disable_exc_resource) {
- printf("process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
- "supressed by a boot-arg\n", procname, pid);
- return;
+ size = *size_in_out;
+
+ switch (flavor) {
+ case TASK_INSPECT_BASIC_COUNTS: {
+ struct task_inspect_basic_counts *bc;
+ uint64_t task_counts[MT_CORE_NFIXED] = { 0 };
+
+ if (size < TASK_INSPECT_BASIC_COUNTS_COUNT) {
+ kr = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ mt_fixed_task_counts(task, task_counts);
+ bc = (struct task_inspect_basic_counts *)info_out;
+#ifdef MT_CORE_INSTRS
+ bc->instructions = task_counts[MT_CORE_INSTRS];
+#else /* defined(MT_CORE_INSTRS) */
+ bc->instructions = 0;
+#endif /* !defined(MT_CORE_INSTRS) */
+ bc->cycles = task_counts[MT_CORE_CYCLES];
+ size = TASK_INSPECT_BASIC_COUNTS_COUNT;
+ break;
}
- if (audio_active) {
- printf("process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
- "supressed due to audio playback\n", procname, pid);
- return;
+ default:
+ kr = KERN_INVALID_ARGUMENT;
+ break;
}
- if (lei.lei_last_refill == 0) {
- printf("process %s[%d] caught causing excessive wakeups. EXC_RESOURCE "
- "supressed due to lei.lei_last_refill = 0 \n", procname, pid);
+
+ if (kr == KERN_SUCCESS) {
+ *size_in_out = size;
}
+ return kr;
+#else /* MONOTONIC */
+#pragma unused(task_insp, flavor, info_out, size_in_out)
+ return KERN_NOT_SUPPORTED;
+#endif /* !MONOTONIC */
+}
- code[0] = code[1] = 0;
- EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_WAKEUPS);
- EXC_RESOURCE_ENCODE_FLAVOR(code[0], FLAVOR_WAKEUPS_MONITOR);
- EXC_RESOURCE_CPUMONITOR_ENCODE_WAKEUPS_PERMITTED(code[0],
- NSEC_PER_SEC * lei.lei_limit / lei.lei_refill_period);
- EXC_RESOURCE_CPUMONITOR_ENCODE_OBSERVATION_INTERVAL(code[0],
- lei.lei_last_refill);
- EXC_RESOURCE_CPUMONITOR_ENCODE_WAKEUPS_OBSERVED(code[1],
- NSEC_PER_SEC * lei.lei_balance / lei.lei_last_refill);
- exception_triage(EXC_RESOURCE, code, EXCEPTION_CODE_MAX);
-#endif /* EXC_RESOURCE_MONITORS */
+#if CONFIG_SECLUDED_MEMORY
+int num_tasks_can_use_secluded_mem = 0;
- if (fatal) {
- task_terminate_internal(task);
+void
+task_set_can_use_secluded_mem(
+ task_t task,
+ boolean_t can_use_secluded_mem)
+{
+ if (!task->task_could_use_secluded_mem) {
+ return;
}
+ task_lock(task);
+ task_set_can_use_secluded_mem_locked(task, can_use_secluded_mem);
+ task_unlock(task);
}
-static boolean_t
-global_update_logical_writes(int64_t io_delta)
+void
+task_set_can_use_secluded_mem_locked(
+ task_t task,
+ boolean_t can_use_secluded_mem)
{
- int64_t old_count, new_count;
- boolean_t needs_telemetry;
-
- do {
- new_count = old_count = global_logical_writes_count;
- new_count += io_delta;
- if (new_count >= io_telemetry_limit) {
- new_count = 0;
- needs_telemetry = TRUE;
- } else {
- needs_telemetry = FALSE;
- }
- } while(!OSCompareAndSwap64(old_count, new_count, &global_logical_writes_count));
- return needs_telemetry;
+ assert(task->task_could_use_secluded_mem);
+ if (can_use_secluded_mem &&
+ secluded_for_apps && /* global boot-arg */
+ !task->task_can_use_secluded_mem) {
+ assert(num_tasks_can_use_secluded_mem >= 0);
+ OSAddAtomic(+1,
+ (volatile SInt32 *)&num_tasks_can_use_secluded_mem);
+ task->task_can_use_secluded_mem = TRUE;
+ } else if (!can_use_secluded_mem &&
+ task->task_can_use_secluded_mem) {
+ assert(num_tasks_can_use_secluded_mem > 0);
+ OSAddAtomic(-1,
+ (volatile SInt32 *)&num_tasks_can_use_secluded_mem);
+ task->task_can_use_secluded_mem = FALSE;
+ }
+}
+
+void
+task_set_could_use_secluded_mem(
+ task_t task,
+ boolean_t could_use_secluded_mem)
+{
+ task->task_could_use_secluded_mem = !!could_use_secluded_mem;
}
-void task_update_logical_writes(task_t task, uint32_t io_size, int flags, void *vp)
+void
+task_set_could_also_use_secluded_mem(
+ task_t task,
+ boolean_t could_also_use_secluded_mem)
{
- int64_t io_delta = 0;
- boolean_t needs_telemetry = FALSE;
+ task->task_could_also_use_secluded_mem = !!could_also_use_secluded_mem;
+}
- if ((!task) || (!io_size) || (!vp))
- return;
-
- KERNEL_DEBUG_CONSTANT((MACHDBG_CODE(DBG_MACH_VM, VM_DATA_WRITE)) | DBG_FUNC_NONE,
- task_pid(task), io_size, flags, (uintptr_t)VM_KERNEL_ADDRPERM(vp), 0);
- DTRACE_IO4(logical_writes, struct task *, task, uint32_t, io_size, int, flags, vnode *, vp);
- switch(flags) {
- case TASK_WRITE_IMMEDIATE:
- OSAddAtomic64(io_size, (SInt64 *)&(task->task_immediate_writes));
- ledger_credit(task->ledger, task_ledgers.logical_writes, io_size);
- break;
- case TASK_WRITE_DEFERRED:
- OSAddAtomic64(io_size, (SInt64 *)&(task->task_deferred_writes));
- ledger_credit(task->ledger, task_ledgers.logical_writes, io_size);
- break;
- case TASK_WRITE_INVALIDATED:
- OSAddAtomic64(io_size, (SInt64 *)&(task->task_invalidated_writes));
- ledger_debit(task->ledger, task_ledgers.logical_writes, io_size);
- break;
- case TASK_WRITE_METADATA:
- OSAddAtomic64(io_size, (SInt64 *)&(task->task_metadata_writes));
- ledger_credit(task->ledger, task_ledgers.logical_writes, io_size);
- break;
+boolean_t
+task_can_use_secluded_mem(
+ task_t task,
+ boolean_t is_alloc)
+{
+ if (task->task_can_use_secluded_mem) {
+ assert(task->task_could_use_secluded_mem);
+ assert(num_tasks_can_use_secluded_mem > 0);
+ return TRUE;
+ }
+ if (task->task_could_also_use_secluded_mem &&
+ num_tasks_can_use_secluded_mem > 0) {
+ assert(num_tasks_can_use_secluded_mem > 0);
+ return TRUE;
}
- io_delta = (flags == TASK_WRITE_INVALIDATED) ? ((int64_t)io_size * -1ll) : ((int64_t)io_size);
- if (io_telemetry_limit != 0) {
- /* If io_telemetry_limit is 0, disable global updates and I/O telemetry */
- needs_telemetry = global_update_logical_writes(io_delta);
- if (needs_telemetry) {
- act_set_io_telemetry_ast(current_thread());
+ /*
+ * If a single task is using more than some large amount of
+ * memory (i.e. secluded_shutoff_trigger) and is approaching
+ * its task limit, allow it to dip into secluded and begin
+ * suppression of rebuilding secluded memory until that task exits.
+ */
+ if (is_alloc && secluded_shutoff_trigger != 0) {
+ uint64_t phys_used = get_task_phys_footprint(task);
+ uint64_t limit = get_task_phys_footprint_limit(task);
+ if (phys_used > secluded_shutoff_trigger &&
+ limit > secluded_shutoff_trigger &&
+ phys_used > limit - secluded_shutoff_headroom) {
+ start_secluded_suppression(task);
+ return TRUE;
}
}
+
+ return FALSE;
}
-/*
- * Control the I/O monitor for a task.
- */
-kern_return_t
-task_io_monitor_ctl(task_t task, uint32_t *flags)
+boolean_t
+task_could_use_secluded_mem(
+ task_t task)
{
- ledger_t ledger = task->ledger;
+ return task->task_could_use_secluded_mem;
+}
- task_lock(task);
- if (*flags & IOMON_ENABLE) {
- /* Configure the physical I/O ledger */
- ledger_set_limit(ledger, task_ledgers.physical_writes, (task_iomon_limit_mb * 1024 * 1024), 0);
- ledger_set_period(ledger, task_ledgers.physical_writes, (task_iomon_interval_secs * NSEC_PER_SEC));
+boolean_t
+task_could_also_use_secluded_mem(
+ task_t task)
+{
+ return task->task_could_also_use_secluded_mem;
+}
+#endif /* CONFIG_SECLUDED_MEMORY */
- /* Configure the logical I/O ledger */
- ledger_set_limit(ledger, task_ledgers.logical_writes, (task_iomon_limit_mb * 1024 * 1024), 0);
- ledger_set_period(ledger, task_ledgers.logical_writes, (task_iomon_interval_secs * NSEC_PER_SEC));
-
- } else if (*flags & IOMON_DISABLE) {
- /*
- * Caller wishes to disable I/O monitor on the task.
- */
- ledger_disable_refill(ledger, task_ledgers.physical_writes);
- ledger_disable_callback(ledger, task_ledgers.physical_writes);
- ledger_disable_refill(ledger, task_ledgers.logical_writes);
- ledger_disable_callback(ledger, task_ledgers.logical_writes);
- }
+queue_head_t *
+task_io_user_clients(task_t task)
+{
+ return &task->io_user_clients;
+}
- task_unlock(task);
- return KERN_SUCCESS;
+void
+task_set_message_app_suspended(task_t task, boolean_t enable)
+{
+ task->message_app_suspended = enable;
}
void
-task_io_rate_exceeded(int warning, const void *param0, __unused const void *param1)
+task_copy_fields_for_exec(task_t dst_task, task_t src_task)
{
- if (warning == 0) {
- SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MUCH_IO((int)param0);
- }
+ dst_task->vtimers = src_task->vtimers;
}
-void __attribute__((noinline)) SENDING_NOTIFICATION__THIS_PROCESS_IS_CAUSING_TOO_MUCH_IO(int flavor)
+#if DEVELOPMENT || DEBUG
+int vm_region_footprint = 0;
+#endif /* DEVELOPMENT || DEBUG */
+
+boolean_t
+task_self_region_footprint(void)
{
- int pid = 0;
- task_t task = current_task();
-#ifdef EXC_RESOURCE_MONITORS
- mach_exception_data_type_t code[EXCEPTION_CODE_MAX];
-#endif /* EXC_RESOURCE_MONITORS */
- struct ledger_entry_info lei;
- kern_return_t kr;
+#if DEVELOPMENT || DEBUG
+ if (vm_region_footprint) {
+ /* system-wide override */
+ return TRUE;
+ }
+#endif /* DEVELOPMENT || DEBUG */
+ return current_task()->task_region_footprint;
+}
-#ifdef MACH_BSD
- pid = proc_selfpid();
-#endif
- /*
- * Get the ledger entry info. We need to do this before disabling the exception
- * to get correct values for all fields.
- */
- switch(flavor) {
- case FLAVOR_IO_PHYSICAL_WRITES:
- ledger_get_entry_info(task->ledger, task_ledgers.physical_writes, &lei);
- break;
- case FLAVOR_IO_LOGICAL_WRITES:
- ledger_get_entry_info(task->ledger, task_ledgers.logical_writes, &lei);
- break;
+void
+task_self_region_footprint_set(
+ boolean_t newval)
+{
+ task_t curtask;
+
+ curtask = current_task();
+ task_lock(curtask);
+ if (newval) {
+ curtask->task_region_footprint = TRUE;
+ } else {
+ curtask->task_region_footprint = FALSE;
}
+ task_unlock(curtask);
+}
-
- /*
- * Disable the exception notification so we don't overwhelm
- * the listener with an endless stream of redundant exceptions.
- * TODO: detect whether another thread is already reporting the violation.
- */
- uint32_t flags = IOMON_DISABLE;
- task_io_monitor_ctl(task, &flags);
+void
+task_set_darkwake_mode(task_t task, boolean_t set_mode)
+{
+ assert(task);
- if (flavor == FLAVOR_IO_LOGICAL_WRITES) {
- trace_resource_violation(RMON_LOGWRITES_VIOLATED, &lei);
- }
- printf("process [%d] caught causing excessive I/O (flavor: %d). Task I/O: %lld MB. [Limit : %lld MB per %lld secs]\n",
- pid, flavor, (lei.lei_balance / (1024 * 1024)), (lei.lei_limit / (1024 * 1024)), (lei.lei_refill_period / NSEC_PER_SEC));
+ task_lock(task);
- kr = send_resource_violation(send_disk_writes_violation, task, &lei, kRNFlagsNone);
- if (kr) {
- printf("send_resource_violation(disk_writes, ...): error %#x\n", kr);
+ if (set_mode) {
+ task->t_flags |= TF_DARKWAKE_MODE;
+ } else {
+ task->t_flags &= ~(TF_DARKWAKE_MODE);
}
-#ifdef EXC_RESOURCE_MONITORS
- code[0] = code[1] = 0;
- EXC_RESOURCE_ENCODE_TYPE(code[0], RESOURCE_TYPE_IO);
- EXC_RESOURCE_ENCODE_FLAVOR(code[0], flavor);
- EXC_RESOURCE_IO_ENCODE_INTERVAL(code[0], (lei.lei_refill_period / NSEC_PER_SEC));
- EXC_RESOURCE_IO_ENCODE_LIMIT(code[0], (lei.lei_limit / (1024 * 1024)));
- EXC_RESOURCE_IO_ENCODE_OBSERVED(code[1], (lei.lei_balance / (1024 * 1024)));
- exception_triage(EXC_RESOURCE, code, EXCEPTION_CODE_MAX);
-#endif /* EXC_RESOURCE_MONITORS */
-}
+ task_unlock(task);
+}
-/* Placeholders for the task set/get voucher interfaces */
-kern_return_t
-task_get_mach_voucher(
- task_t task,
- mach_voucher_selector_t __unused which,
- ipc_voucher_t *voucher)
+boolean_t
+task_get_darkwake_mode(task_t task)
{
- if (TASK_NULL == task)
- return KERN_INVALID_TASK;
-
- *voucher = NULL;
- return KERN_SUCCESS;
+ assert(task);
+ return (task->t_flags & TF_DARKWAKE_MODE) != 0;
}
-kern_return_t
-task_set_mach_voucher(
- task_t task,
- ipc_voucher_t __unused voucher)
+kern_return_t
+task_get_exc_guard_behavior(
+ task_t task,
+ task_exc_guard_behavior_t *behaviorp)
{
- if (TASK_NULL == task)
+ if (task == TASK_NULL) {
return KERN_INVALID_TASK;
-
+ }
+ *behaviorp = task->task_exc_guard;
return KERN_SUCCESS;
}
+#ifndef TASK_EXC_GUARD_ALL
+/* Temporary define until two branches are merged */
+#define TASK_EXC_GUARD_ALL (TASK_EXC_GUARD_VM_ALL | 0xf0)
+#endif
+
kern_return_t
-task_swap_mach_voucher(
- task_t task,
- ipc_voucher_t new_voucher,
- ipc_voucher_t *in_out_old_voucher)
+task_set_exc_guard_behavior(
+ task_t task,
+ task_exc_guard_behavior_t behavior)
{
- if (TASK_NULL == task)
+ if (task == TASK_NULL) {
return KERN_INVALID_TASK;
-
- *in_out_old_voucher = new_voucher;
+ }
+ if (behavior & ~TASK_EXC_GUARD_ALL) {
+ return KERN_INVALID_VALUE;
+ }
+ task->task_exc_guard = behavior;
return KERN_SUCCESS;
}
-void task_set_gpu_denied(task_t task, boolean_t denied)
+#if __arm64__
+extern int legacy_footprint_entitlement_mode;
+extern void memorystatus_act_on_legacy_footprint_entitlement(struct proc *, boolean_t);
+extern void memorystatus_act_on_ios13extended_footprint_entitlement(struct proc *);
+
+
+void
+task_set_legacy_footprint(
+ task_t task)
{
task_lock(task);
+ task->task_legacy_footprint = TRUE;
+ task_unlock(task);
+}
- if (denied) {
- task->t_flags |= TF_GPU_DENIED;
- } else {
- task->t_flags &= ~TF_GPU_DENIED;
+void
+task_set_extra_footprint_limit(
+ task_t task)
+{
+ if (task->task_extra_footprint_limit) {
+ return;
}
-
+ task_lock(task);
+ if (task->task_extra_footprint_limit) {
+ task_unlock(task);
+ return;
+ }
+ task->task_extra_footprint_limit = TRUE;
task_unlock(task);
+ memorystatus_act_on_legacy_footprint_entitlement(task->bsd_info, TRUE);
}
-boolean_t task_is_gpu_denied(task_t task)
+void
+task_set_ios13extended_footprint_limit(
+ task_t task)
{
- /* We don't need the lock to read this flag */
- return (task->t_flags & TF_GPU_DENIED) ? TRUE : FALSE;
+ if (task->task_ios13extended_footprint_limit) {
+ return;
+ }
+ task_lock(task);
+ if (task->task_ios13extended_footprint_limit) {
+ task_unlock(task);
+ return;
+ }
+ task->task_ios13extended_footprint_limit = TRUE;
+ task_unlock(task);
+ memorystatus_act_on_ios13extended_footprint_entitlement(task->bsd_info);
}
+#endif /* __arm64__ */
-
-uint64_t get_task_memory_region_count(task_t task)
+static inline ledger_amount_t
+task_ledger_get_balance(
+ ledger_t ledger,
+ int ledger_idx)
{
- vm_map_t map;
- map = (task == kernel_task) ? kernel_map: task->map;
- return((uint64_t)get_map_nentries(map));
+ ledger_amount_t amount;
+ amount = 0;
+ ledger_get_balance(ledger, ledger_idx, &amount);
+ return amount;
}
-static void
-kdebug_trace_dyld_internal(uint32_t base_code,
- struct dyld_kernel_image_info *info)
+/*
+ * Gather the amount of memory counted in a task's footprint due to
+ * being in a specific set of ledgers.
+ */
+void
+task_ledgers_footprint(
+ ledger_t ledger,
+ ledger_amount_t *ledger_resident,
+ ledger_amount_t *ledger_compressed)
{
- static_assert(sizeof(info->uuid) >= 16);
+ *ledger_resident = 0;
+ *ledger_compressed = 0;
-#if defined(__LP64__)
- uint64_t *uuid = (uint64_t *)&(info->uuid);
+ /* purgeable non-volatile memory */
+ *ledger_resident += task_ledger_get_balance(ledger, task_ledgers.purgeable_nonvolatile);
+ *ledger_compressed += task_ledger_get_balance(ledger, task_ledgers.purgeable_nonvolatile_compressed);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code), uuid[0],
- uuid[1], info->load_addr,
- (uint64_t)info->fsid.val[0] | ((uint64_t)info->fsid.val[1] << 32),
- 0);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 1),
- (uint64_t)info->fsobjid.fid_objno |
- ((uint64_t)info->fsobjid.fid_generation << 32),
- 0, 0, 0, 0);
-#else /* defined(__LP64__) */
- uint32_t *uuid = (uint32_t *)&(info->uuid);
+ /* "default" tagged memory */
+ *ledger_resident += task_ledger_get_balance(ledger, task_ledgers.tagged_footprint);
+ *ledger_compressed += task_ledger_get_balance(ledger, task_ledgers.tagged_footprint_compressed);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 2), uuid[0],
- uuid[1], uuid[2], uuid[3], 0);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 3),
- (uint32_t)info->load_addr, info->fsid.val[0], info->fsid.val[1],
- info->fsobjid.fid_objno, 0);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, base_code + 4),
- info->fsobjid.fid_generation, 0, 0, 0, 0);
-#endif /* !defined(__LP64__) */
+ /* "network" currently never counts in the footprint... */
+
+ /* "media" tagged memory */
+ *ledger_resident += task_ledger_get_balance(ledger, task_ledgers.media_footprint);
+ *ledger_compressed += task_ledger_get_balance(ledger, task_ledgers.media_footprint_compressed);
+
+ /* "graphics" tagged memory */
+ *ledger_resident += task_ledger_get_balance(ledger, task_ledgers.graphics_footprint);
+ *ledger_compressed += task_ledger_get_balance(ledger, task_ledgers.graphics_footprint_compressed);
+
+ /* "neural" tagged memory */
+ *ledger_resident += task_ledger_get_balance(ledger, task_ledgers.neural_footprint);
+ *ledger_compressed += task_ledger_get_balance(ledger, task_ledgers.neural_footprint_compressed);
}
-static kern_return_t
-kdebug_trace_dyld(task_t task, uint32_t base_code,
- vm_map_copy_t infos_copy, mach_msg_type_number_t infos_len)
+void
+task_set_memory_ownership_transfer(
+ task_t task,
+ boolean_t value)
{
- kern_return_t kr;
- dyld_kernel_image_info_array_t infos;
- vm_map_offset_t map_data;
- vm_offset_t data;
+ task_lock(task);
+ task->task_can_transfer_memory_ownership = !!value;
+ task_unlock(task);
+}
- if (!kdebug_enable ||
- !kdebug_debugid_enabled(KDBG_EVENTID(DBG_DYLD, DBG_DYLD_UUID, 0)))
- {
- vm_map_copy_discard(infos_copy);
- return KERN_SUCCESS;
- }
+void
+task_copy_vmobjects(task_t task, vm_object_query_t query, size_t len, size_t *num)
+{
+ vm_object_t find_vmo;
+ size_t size = 0;
- assert(infos_copy != NULL);
+ task_objq_lock(task);
+ if (query != NULL) {
+ queue_iterate(&task->task_objq, find_vmo, vm_object_t, task_objq)
+ {
+ vm_object_query_t p = &query[size++];
- if (task == NULL || task != current_task()) {
- return KERN_INVALID_TASK;
+ /* make sure to not overrun */
+ if (size * sizeof(vm_object_query_data_t) > len) {
+ --size;
+ break;
+ }
+
+ bzero(p, sizeof(*p));
+ p->object_id = (vm_object_id_t) VM_KERNEL_ADDRPERM(find_vmo);
+ p->virtual_size = find_vmo->internal ? find_vmo->vo_size : 0;
+ p->resident_size = find_vmo->resident_page_count * PAGE_SIZE;
+ p->wired_size = find_vmo->wired_page_count * PAGE_SIZE;
+ p->reusable_size = find_vmo->reusable_page_count * PAGE_SIZE;
+ p->vo_no_footprint = find_vmo->vo_no_footprint;
+ p->vo_ledger_tag = find_vmo->vo_ledger_tag;
+ p->purgable = find_vmo->purgable;
+
+ if (find_vmo->internal && find_vmo->pager_created && find_vmo->pager != NULL) {
+ p->compressed_size = vm_compressor_pager_get_count(find_vmo->pager) * PAGE_SIZE;
+ } else {
+ p->compressed_size = 0;
+ }
+ }
+ } else {
+ size = (size_t)task->task_owned_objects;
}
+ task_objq_unlock(task);
- kr = vm_map_copyout(ipc_kernel_map, &map_data, (vm_map_copy_t)infos_copy);
- if (kr != KERN_SUCCESS) {
- return kr;
+ *num = size;
+}
+
+void
+task_set_filter_msg_flag(
+ task_t task,
+ boolean_t flag)
+{
+ assert(task != TASK_NULL);
+
+ task_lock(task);
+ if (flag) {
+ task->t_flags |= TF_FILTER_MSG;
+ } else {
+ task->t_flags &= ~TF_FILTER_MSG;
}
+ task_unlock(task);
+}
- infos = CAST_DOWN(dyld_kernel_image_info_array_t, map_data);
+boolean_t
+task_get_filter_msg_flag(
+ task_t task)
+{
+ uint32_t flags = 0;
- for (mach_msg_type_number_t i = 0; i < infos_len; i++) {
- kdebug_trace_dyld_internal(base_code, &(infos[i]));
+ if (!task) {
+ return false;
}
- data = CAST_DOWN(vm_offset_t, map_data);
- mach_vm_deallocate(ipc_kernel_map, data, infos_len * sizeof(infos[0]));
- return KERN_SUCCESS;
+ flags = os_atomic_load(&task->t_flags, relaxed);
+ return (flags & TF_FILTER_MSG) ? TRUE : FALSE;
+}
+bool
+task_is_exotic(
+ task_t task)
+{
+ if (task == TASK_NULL) {
+ return false;
+ }
+ return vm_map_is_exotic(get_task_map(task));
}
-kern_return_t
-task_register_dyld_image_infos(task_t task,
- dyld_kernel_image_info_array_t infos_copy,
- mach_msg_type_number_t infos_len)
+bool
+task_is_alien(
+ task_t task)
{
- return kdebug_trace_dyld(task, DBG_DYLD_UUID_MAP_A,
- (vm_map_copy_t)infos_copy, infos_len);
+ if (task == TASK_NULL) {
+ return false;
+ }
+ return vm_map_is_alien(get_task_map(task));
}
-kern_return_t
-task_unregister_dyld_image_infos(task_t task,
- dyld_kernel_image_info_array_t infos_copy,
- mach_msg_type_number_t infos_len)
+
+
+#if CONFIG_MACF
+/* Set the filter mask for Mach traps. */
+void
+mac_task_set_mach_filter_mask(task_t task, uint8_t *maskptr)
{
- return kdebug_trace_dyld(task, DBG_DYLD_UUID_UNMAP_A,
- (vm_map_copy_t)infos_copy, infos_len);
+ assert(task);
+
+ task->mach_trap_filter_mask = maskptr;
}
-kern_return_t
-task_get_dyld_image_infos(__unused task_t task,
- __unused dyld_kernel_image_info_array_t * dyld_images,
- __unused mach_msg_type_number_t * dyld_imagesCnt)
+/* Set the filter mask for kobject msgs. */
+void
+mac_task_set_kobj_filter_mask(task_t task, uint8_t *maskptr)
{
- return KERN_NOT_SUPPORTED;
+ assert(task);
+
+ task->mach_kobj_filter_mask = maskptr;
}
-kern_return_t
-task_register_dyld_shared_cache_image_info(task_t task,
- dyld_kernel_image_info_t cache_img,
- __unused boolean_t no_cache,
- __unused boolean_t private_cache)
+/* Hook for mach trap/sc filter evaluation policy. */
+mac_task_mach_filter_cbfunc_t mac_task_mach_trap_evaluate = NULL;
+
+/* Hook for kobj message filter evaluation policy. */
+mac_task_kobj_filter_cbfunc_t mac_task_kobj_msg_evaluate = NULL;
+
+/* Set the callback hooks for the filtering policy. */
+int
+mac_task_register_filter_callbacks(
+ const mac_task_mach_filter_cbfunc_t mach_cbfunc,
+ const mac_task_kobj_filter_cbfunc_t kobj_cbfunc)
{
- if (task == NULL || task != current_task()) {
- return KERN_INVALID_TASK;
+ if (mach_cbfunc != NULL) {
+ if (mac_task_mach_trap_evaluate != NULL) {
+ return KERN_FAILURE;
+ }
+ mac_task_mach_trap_evaluate = mach_cbfunc;
+ }
+ if (kobj_cbfunc != NULL) {
+ if (mac_task_kobj_msg_evaluate != NULL) {
+ return KERN_FAILURE;
+ }
+ mac_task_kobj_msg_evaluate = kobj_cbfunc;
}
- kdebug_trace_dyld_internal(DBG_DYLD_UUID_SHARED_CACHE_A, &cache_img);
return KERN_SUCCESS;
}
+#endif /* CONFIG_MACF */
-kern_return_t
-task_register_dyld_set_dyld_state(__unused task_t task,
- __unused uint8_t dyld_state)
+void
+task_transfer_mach_filter_bits(
+ task_t new_task,
+ task_t old_task)
{
- return KERN_NOT_SUPPORTED;
+#ifdef CONFIG_MACF
+ /* Copy mach trap and kernel object mask pointers to new task. */
+ new_task->mach_trap_filter_mask = old_task->mach_trap_filter_mask;
+ new_task->mach_kobj_filter_mask = old_task->mach_kobj_filter_mask;
+#endif
+ /* If filter message flag is set then set it in the new task. */
+ if (task_get_filter_msg_flag(old_task)) {
+ new_task->t_flags |= TF_FILTER_MSG;
+ }
}
-kern_return_t
-task_register_dyld_get_process_state(__unused task_t task,
- __unused dyld_kernel_process_info_t * dyld_process_state)
-{
- return KERN_NOT_SUPPORTED;
-}
-#if CONFIG_SECLUDED_MEMORY
-int num_tasks_can_use_secluded_mem = 0;
+#if __has_feature(ptrauth_calls)
+
+#define PAC_EXCEPTION_ENTITLEMENT "com.apple.private.pac.exception"
void
-task_set_can_use_secluded_mem(
- task_t task,
- boolean_t can_use_secluded_mem)
+task_set_pac_exception_fatal_flag(
+ task_t task)
{
- if (!task->task_could_use_secluded_mem) {
+ assert(task != TASK_NULL);
+
+ if (!IOTaskHasEntitlement(task, PAC_EXCEPTION_ENTITLEMENT)) {
return;
}
+
task_lock(task);
- task_set_can_use_secluded_mem_locked(task, can_use_secluded_mem);
+ task->t_flags |= TF_PAC_EXC_FATAL;
task_unlock(task);
}
-void
-task_set_can_use_secluded_mem_locked(
- task_t task,
- boolean_t can_use_secluded_mem)
+bool
+task_is_pac_exception_fatal(
+ task_t task)
{
- assert(task->task_could_use_secluded_mem);
- if (can_use_secluded_mem &&
- secluded_for_apps && /* global boot-arg */
- !task->task_can_use_secluded_mem) {
- assert(num_tasks_can_use_secluded_mem >= 0);
- OSAddAtomic(+1,
- (volatile SInt32 *)&num_tasks_can_use_secluded_mem);
- task->task_can_use_secluded_mem = TRUE;
- } else if (!can_use_secluded_mem &&
- task->task_can_use_secluded_mem) {
- assert(num_tasks_can_use_secluded_mem > 0);
- OSAddAtomic(-1,
- (volatile SInt32 *)&num_tasks_can_use_secluded_mem);
- task->task_can_use_secluded_mem = FALSE;
- }
-}
+ uint32_t flags = 0;
-void
-task_set_could_use_secluded_mem(
- task_t task,
- boolean_t could_use_secluded_mem)
-{
- task->task_could_use_secluded_mem = could_use_secluded_mem;
-}
+ assert(task != TASK_NULL);
-void
-task_set_could_also_use_secluded_mem(
- task_t task,
- boolean_t could_also_use_secluded_mem)
-{
- task->task_could_also_use_secluded_mem = could_also_use_secluded_mem;
+ flags = os_atomic_load(&task->t_flags, relaxed);
+ return (bool)(flags & TF_PAC_EXC_FATAL);
}
+#endif /* __has_feature(ptrauth_calls) */
-boolean_t
-task_can_use_secluded_mem(
- task_t task)
+void
+task_set_tecs(task_t task)
{
- if (task->task_can_use_secluded_mem) {
- assert(task->task_could_use_secluded_mem);
- assert(num_tasks_can_use_secluded_mem > 0);
- return TRUE;
+ if (task == TASK_NULL) {
+ task = current_task();
}
- if (task->task_could_also_use_secluded_mem &&
- num_tasks_can_use_secluded_mem > 0) {
- assert(num_tasks_can_use_secluded_mem > 0);
- return TRUE;
+
+ if (!machine_csv(CPUVN_CI)) {
+ return;
}
- return FALSE;
-}
-boolean_t
-task_could_use_secluded_mem(
- task_t task)
-{
- return task->task_could_use_secluded_mem;
-}
-#endif /* CONFIG_SECLUDED_MEMORY */
+ LCK_MTX_ASSERT(&task->lock, LCK_MTX_ASSERT_NOTOWNED);
-queue_head_t *
-task_io_user_clients(task_t task)
-{
- return (&task->io_user_clients);
+ task_lock(task);
+
+ task->t_flags |= TF_TECS;
+
+ thread_t thread;
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ machine_tecs(thread);
+ }
+ task_unlock(task);
}
projects / apple / xnu.git / blobdiff