/*
- * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2006-2018 Apple Computer, 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@
*/
#ifndef SYS_MEMORYSTATUS_H
#define SYS_MEMORYSTATUS_H
-#include <stdint.h>
#include <sys/time.h>
+#include <mach_debug/zone_info.h>
#include <sys/proc.h>
-#include <sys/param.h>
+
+#define MEMORYSTATUS_ENTITLEMENT "com.apple.private.memorystatus"
#define JETSAM_PRIORITY_REVISION 2
#define JETSAM_PRIORITY_IDLE_HEAD -2
/* The value -1 is an alias to JETSAM_PRIORITY_DEFAULT */
#define JETSAM_PRIORITY_IDLE 0
-#define JETSAM_PRIORITY_IDLE_DEFERRED 1
+#define JETSAM_PRIORITY_IDLE_DEFERRED 1 /* Keeping this around till all xnu_quick_tests can be moved away from it.*/
+#define JETSAM_PRIORITY_AGING_BAND1 JETSAM_PRIORITY_IDLE_DEFERRED
#define JETSAM_PRIORITY_BACKGROUND_OPPORTUNISTIC 2
+#define JETSAM_PRIORITY_AGING_BAND2 JETSAM_PRIORITY_BACKGROUND_OPPORTUNISTIC
#define JETSAM_PRIORITY_BACKGROUND 3
+#define JETSAM_PRIORITY_ELEVATED_INACTIVE JETSAM_PRIORITY_BACKGROUND
#define JETSAM_PRIORITY_MAIL 4
#define JETSAM_PRIORITY_PHONE 5
#define JETSAM_PRIORITY_UI_SUPPORT 8
#define JETSAM_PRIORITY_FOREGROUND 10
#define JETSAM_PRIORITY_AUDIO_AND_ACCESSORY 12
#define JETSAM_PRIORITY_CONDUCTOR 13
+#define JETSAM_PRIORITY_DRIVER_APPLE 15
#define JETSAM_PRIORITY_HOME 16
#define JETSAM_PRIORITY_EXECUTIVE 17
#define JETSAM_PRIORITY_IMPORTANT 18
/* Compatibility */
#define DEFAULT_JETSAM_PRIORITY 18
+/*
+ * The deferral time used by default for apps and daemons in all aging
+ * policies except kJetsamAgingPolicySysProcsReclaimedFirst is
+ * DEFERRED_IDLE_EXIT_TIME_SECS.
+ *
+ * For kJetsamAgingPolicySysProcsReclaimedFirst,
+ *
+ * Daemons: The actual idle deferred time for the daemon is based on
+ * the relaunch behavior of the daemon. The relaunch behavior determines
+ * the scaling factor applied to DEFERRED_IDLE_EXIT_TIME_SECS. See
+ * kJetsamSysProcsIdleDelayTime* ratios defined in kern_memorystatus.c
+ *
+ * Apps: The apps are aged for DEFERRED_IDLE_EXIT_TIME_SECS factored
+ * by kJetsamAppsIdleDelayTimeRatio.
+ */
#define DEFERRED_IDLE_EXIT_TIME_SECS 10
#define KEV_MEMORYSTATUS_SUBCLASS 3
pid_t pid;
int32_t priority;
uint64_t user_data;
- int32_t limit;
+ int32_t limit; /* MB */
uint32_t state;
} memorystatus_priority_entry_t;
+/*
+ * This should be the structure to specify different properties
+ * for processes (group or single) from user-space. Unfortunately,
+ * we can't move to it completely because the priority_entry structure
+ * above has been in use for a while now. We'll have to deprecate it.
+ *
+ * To support new fields/properties, we will add a new structure with a
+ * new version and a new size.
+ */
+#define MEMORYSTATUS_MPE_VERSION_1 1
+
+#define MEMORYSTATUS_MPE_VERSION_1_SIZE sizeof(struct memorystatus_properties_entry_v1)
+
+typedef struct memorystatus_properties_entry_v1 {
+ int version;
+ pid_t pid;
+ int32_t priority;
+ int use_probability;
+ uint64_t user_data;
+ int32_t limit; /* MB */
+ uint32_t state;
+ char proc_name[MAXCOMLEN + 1];
+ char __pad1[3];
+} memorystatus_properties_entry_v1_t;
+
typedef struct memorystatus_kernel_stats {
uint32_t free_pages;
uint32_t active_pages;
uint64_t compressions;
uint64_t decompressions;
uint64_t total_uncompressed_pages_in_compressor;
+ uint64_t zone_map_size;
+ uint64_t zone_map_capacity;
+ uint64_t largest_zone_size;
+ char largest_zone_name[MACH_ZONE_NAME_MAX_LEN];
} memorystatus_kernel_stats_t;
/*
typedef struct jetsam_snapshot_entry {
pid_t pid;
- char name[MAXCOMLEN+1];
+ char name[(2 * MAXCOMLEN) + 1];
int32_t priority;
- uint32_t pages;
- uint32_t max_pages;
uint32_t state;
- uint32_t killed;
- uint64_t user_data;
- uint8_t uuid[16];
uint32_t fds;
- uint32_t max_pages_lifetime;
- uint32_t purgeable_pages;
- struct timeval cpu_time;
+ uint8_t uuid[16];
+ uint64_t user_data;
+ uint64_t killed;
+ uint64_t pages;
+ uint64_t max_pages_lifetime;
+ uint64_t purgeable_pages;
+ uint64_t jse_internal_pages;
+ uint64_t jse_internal_compressed_pages;
+ uint64_t jse_purgeable_nonvolatile_pages;
+ uint64_t jse_purgeable_nonvolatile_compressed_pages;
+ uint64_t jse_alternate_accounting_pages;
+ uint64_t jse_alternate_accounting_compressed_pages;
+ uint64_t jse_iokit_mapped_pages;
+ uint64_t jse_page_table_pages;
+ uint64_t jse_memory_region_count;
+ uint64_t jse_gencount; /* memorystatus_thread generation counter */
+ uint64_t jse_starttime; /* absolute time when process starts */
+ uint64_t jse_killtime; /* absolute time when jetsam chooses to kill a process */
+ uint64_t jse_idle_delta; /* time spent in idle band */
+ uint64_t jse_coalition_jetsam_id; /* we only expose coalition id for COALITION_TYPE_JETSAM */
+ struct timeval64 cpu_time;
+ uint64_t jse_thaw_count;
} memorystatus_jetsam_snapshot_entry_t;
typedef struct jetsam_snapshot {
- uint64_t snapshot_time;
- uint64_t notification_time;
- memorystatus_kernel_stats_t stats;
+ uint64_t snapshot_time; /* absolute time snapshot was initialized */
+ uint64_t notification_time; /* absolute time snapshot was consumed */
+ uint64_t js_gencount; /* memorystatus_thread generation counter */
+ memorystatus_kernel_stats_t stats; /* system stat when snapshot is initialized */
size_t entry_count;
memorystatus_jetsam_snapshot_entry_t entries[];
} memorystatus_jetsam_snapshot_t;
-typedef struct memorystatus_freeze_entry {
- int32_t pid;
- uint32_t flags;
- uint32_t pages;
-} memorystatus_freeze_entry_t;
-
/* TODO - deprecate; see <rdar://problem/12969599> */
#define kMaxSnapshotEntries 192
+/*
+ * default jetsam snapshot support
+ */
+extern memorystatus_jetsam_snapshot_t *memorystatus_jetsam_snapshot;
+extern memorystatus_jetsam_snapshot_t *memorystatus_jetsam_snapshot_copy;
+extern unsigned int memorystatus_jetsam_snapshot_count;
+extern unsigned int memorystatus_jetsam_snapshot_copy_count;
+extern unsigned int memorystatus_jetsam_snapshot_max;
+extern unsigned int memorystatus_jetsam_snapshot_size;
+extern uint64_t memorystatus_jetsam_snapshot_last_timestamp;
+extern uint64_t memorystatus_jetsam_snapshot_timeout;
+#define memorystatus_jetsam_snapshot_list memorystatus_jetsam_snapshot->entries
+#define JETSAM_SNAPSHOT_TIMEOUT_SECS 30
+
+/* General memorystatus stuff */
+
+extern uint64_t memorystatus_sysprocs_idle_delay_time;
+extern uint64_t memorystatus_apps_idle_delay_time;
+
/* State */
#define kMemorystatusSuspended 0x01
#define kMemorystatusFrozen 0x02
#define kMemorystatusTracked 0x08
#define kMemorystatusSupportsIdleExit 0x10
#define kMemorystatusDirty 0x20
+#define kMemorystatusAssertion 0x40
+
+/*
+ * Jetsam exit reason definitions - related to memorystatus
+ *
+ * When adding new exit reasons also update:
+ * JETSAM_REASON_MEMORYSTATUS_MAX
+ * kMemorystatusKilled... Cause enum
+ * memorystatus_kill_cause_name[]
+ */
+#define JETSAM_REASON_INVALID 0
+#define JETSAM_REASON_GENERIC 1
+#define JETSAM_REASON_MEMORY_HIGHWATER 2
+#define JETSAM_REASON_VNODE 3
+#define JETSAM_REASON_MEMORY_VMPAGESHORTAGE 4
+#define JETSAM_REASON_MEMORY_PROCTHRASHING 5
+#define JETSAM_REASON_MEMORY_FCTHRASHING 6
+#define JETSAM_REASON_MEMORY_PERPROCESSLIMIT 7
+#define JETSAM_REASON_MEMORY_DISK_SPACE_SHORTAGE 8
+#define JETSAM_REASON_MEMORY_IDLE_EXIT 9
+#define JETSAM_REASON_ZONE_MAP_EXHAUSTION 10
+#define JETSAM_REASON_MEMORY_VMCOMPRESSOR_THRASHING 11
+#define JETSAM_REASON_MEMORY_VMCOMPRESSOR_SPACE_SHORTAGE 12
+#define JETSAM_REASON_LOWSWAP 13
+#define JETSAM_REASON_MEMORYSTATUS_MAX JETSAM_REASON_LOWSWAP
+
+/*
+ * Jetsam exit reason definitions - not related to memorystatus
+ */
+#define JETSAM_REASON_CPULIMIT 100
/* Cause */
enum {
- kMemorystatusKilled = 1,
- kMemorystatusKilledHiwat,
- kMemorystatusKilledVnodes,
- kMemorystatusKilledVMPageShortage,
- kMemorystatusKilledVMThrashing,
- kMemorystatusKilledFCThrashing,
- kMemorystatusKilledPerProcessLimit,
- kMemorystatusKilledDiagnostic,
- kMemorystatusKilledIdleExit
+ kMemorystatusInvalid = JETSAM_REASON_INVALID,
+ kMemorystatusKilled = JETSAM_REASON_GENERIC,
+ kMemorystatusKilledHiwat = JETSAM_REASON_MEMORY_HIGHWATER,
+ kMemorystatusKilledVnodes = JETSAM_REASON_VNODE,
+ kMemorystatusKilledVMPageShortage = JETSAM_REASON_MEMORY_VMPAGESHORTAGE,
+ kMemorystatusKilledProcThrashing = JETSAM_REASON_MEMORY_PROCTHRASHING,
+ kMemorystatusKilledFCThrashing = JETSAM_REASON_MEMORY_FCTHRASHING,
+ kMemorystatusKilledPerProcessLimit = JETSAM_REASON_MEMORY_PERPROCESSLIMIT,
+ kMemorystatusKilledDiskSpaceShortage = JETSAM_REASON_MEMORY_DISK_SPACE_SHORTAGE,
+ kMemorystatusKilledIdleExit = JETSAM_REASON_MEMORY_IDLE_EXIT,
+ kMemorystatusKilledZoneMapExhaustion = JETSAM_REASON_ZONE_MAP_EXHAUSTION,
+ kMemorystatusKilledVMCompressorThrashing = JETSAM_REASON_MEMORY_VMCOMPRESSOR_THRASHING,
+ kMemorystatusKilledVMCompressorSpaceShortage = JETSAM_REASON_MEMORY_VMCOMPRESSOR_SPACE_SHORTAGE,
+ kMemorystatusKilledLowSwap = JETSAM_REASON_LOWSWAP,
};
-/* Temporary, to prevent the need for a linked submission of ReportCrash */
-/* Remove when <rdar://problem/13210532> has been integrated */
-enum {
- kMemorystatusKilledVM = kMemorystatusKilledVMPageShortage
-};
+/*
+ * For backwards compatibility
+ * Keeping these around for external users (e.g. ReportCrash, Ariadne).
+ * TODO: Remove once they stop using these.
+ */
+#define kMemorystatusKilledDiagnostic kMemorystatusKilledDiskSpaceShortage
+#define kMemorystatusKilledVMThrashing kMemorystatusKilledVMCompressorThrashing
+#define JETSAM_REASON_MEMORY_VMTHRASHING JETSAM_REASON_MEMORY_VMCOMPRESSOR_THRASHING
/* Memorystatus control */
#define MEMORYSTATUS_BUFFERSIZE_MAX 65536
#define MEMORYSTATUS_CMD_SET_PRIORITY_PROPERTIES 2
#define MEMORYSTATUS_CMD_GET_JETSAM_SNAPSHOT 3
#define MEMORYSTATUS_CMD_GET_PRESSURE_STATUS 4
-#define MEMORYSTATUS_CMD_SET_JETSAM_HIGH_WATER_MARK 5
-#define MEMORYSTATUS_CMD_SET_JETSAM_TASK_LIMIT 6
+#define MEMORYSTATUS_CMD_SET_JETSAM_HIGH_WATER_MARK 5 /* Set active memory limit = inactive memory limit, both non-fatal */
+#define MEMORYSTATUS_CMD_SET_JETSAM_TASK_LIMIT 6 /* Set active memory limit = inactive memory limit, both fatal */
+#define MEMORYSTATUS_CMD_SET_MEMLIMIT_PROPERTIES 7 /* Set memory limits plus attributes independently */
+#define MEMORYSTATUS_CMD_GET_MEMLIMIT_PROPERTIES 8 /* Get memory limits plus attributes */
+#define MEMORYSTATUS_CMD_PRIVILEGED_LISTENER_ENABLE 9 /* Set the task's status as a privileged listener w.r.t memory notifications */
+#define MEMORYSTATUS_CMD_PRIVILEGED_LISTENER_DISABLE 10 /* Reset the task's status as a privileged listener w.r.t memory notifications */
+#define MEMORYSTATUS_CMD_AGGRESSIVE_JETSAM_LENIENT_MODE_ENABLE 11 /* Enable the 'lenient' mode for aggressive jetsam. See comments in kern_memorystatus.c near the top. */
+#define MEMORYSTATUS_CMD_AGGRESSIVE_JETSAM_LENIENT_MODE_DISABLE 12 /* Disable the 'lenient' mode for aggressive jetsam. */
+#define MEMORYSTATUS_CMD_GET_MEMLIMIT_EXCESS 13 /* Compute how much a process's phys_footprint exceeds inactive memory limit */
+#define MEMORYSTATUS_CMD_ELEVATED_INACTIVEJETSAMPRIORITY_ENABLE 14 /* Set the inactive jetsam band for a process to JETSAM_PRIORITY_ELEVATED_INACTIVE */
+#define MEMORYSTATUS_CMD_ELEVATED_INACTIVEJETSAMPRIORITY_DISABLE 15 /* Reset the inactive jetsam band for a process to the default band (0)*/
+#define MEMORYSTATUS_CMD_SET_PROCESS_IS_MANAGED 16 /* (Re-)Set state on a process that marks it as (un-)managed by a system entity e.g. assertiond */
+#define MEMORYSTATUS_CMD_GET_PROCESS_IS_MANAGED 17 /* Return the 'managed' status of a process */
+#define MEMORYSTATUS_CMD_SET_PROCESS_IS_FREEZABLE 18 /* Is the process eligible for freezing? Apps and extensions can pass in FALSE to opt out of freezing, i.e.,
+ * if they would prefer being jetsam'ed in the idle band to being frozen in an elevated band. */
+#define MEMORYSTATUS_CMD_GET_PROCESS_IS_FREEZABLE 19 /* Return the freezable state of a process. */
+
+#if CONFIG_FREEZE
+#if DEVELOPMENT || DEBUG
+#define MEMORYSTATUS_CMD_FREEZER_CONTROL 20
+#endif /* DEVELOPMENT || DEBUG */
+#endif /* CONFIG_FREEZE */
-/* Group Commands */
-#define MEMORYSTATUS_CMD_GRP_SET_PROPERTIES 7
+#define MEMORYSTATUS_CMD_GET_AGGRESSIVE_JETSAM_LENIENT_MODE 21 /* Query if the lenient mode for aggressive jetsam is enabled. */
+
+#define MEMORYSTATUS_CMD_INCREASE_JETSAM_TASK_LIMIT 22 /* Used by DYLD to increase the jetsam active and inactive limits, when using roots */
+
+/* Commands that act on a group of processes */
+#define MEMORYSTATUS_CMD_GRP_SET_PROPERTIES 100
#if PRIVATE
/* Test commands */
/* Trigger forced jetsam */
-#define MEMORYSTATUS_CMD_TEST_JETSAM 1000
+#define MEMORYSTATUS_CMD_TEST_JETSAM 1000
+#define MEMORYSTATUS_CMD_TEST_JETSAM_SORT 1001
/* Panic on jetsam options */
typedef struct memorystatus_jetsam_panic_options {
uint32_t mask;
} memorystatus_jetsam_panic_options_t;
-#define MEMORYSTATUS_CMD_SET_JETSAM_PANIC_BITS 1001
+#define MEMORYSTATUS_CMD_SET_JETSAM_PANIC_BITS 1002
+
+/* Select priority band sort order */
+#define JETSAM_SORT_NOSORT 0
+#define JETSAM_SORT_DEFAULT 1
+
#endif /* PRIVATE */
+/* memorystatus_control() flags */
+
+#define MEMORYSTATUS_FLAGS_SNAPSHOT_ON_DEMAND 0x1 /* A populated snapshot buffer is returned on demand */
+#define MEMORYSTATUS_FLAGS_SNAPSHOT_AT_BOOT 0x2 /* Returns a snapshot with memstats collected at boot */
+#define MEMORYSTATUS_FLAGS_SNAPSHOT_COPY 0x4 /* Returns the previously populated snapshot created by the system */
+#define MEMORYSTATUS_FLAGS_GRP_SET_PRIORITY 0x8 /* Set jetsam priorities for a group of pids */
+#define MEMORYSTATUS_FLAGS_GRP_SET_PROBABILITY 0x10 /* Set probability of use for a group of processes */
+
+/*
+ * For use with memorystatus_control:
+ * MEMORYSTATUS_CMD_GET_JETSAM_SNAPSHOT
+ *
+ * A jetsam snapshot is initialized when a non-idle
+ * jetsam event occurs. The data is held in the
+ * buffer until it is reaped. This is the default
+ * behavior.
+ *
+ * Flags change the default behavior:
+ * Demand mode - this is an on_demand snapshot,
+ * meaning data is populated upon request.
+ *
+ * Boot mode - this is a snapshot of
+ * memstats collected before loading the
+ * init program. Once collected, these
+ * stats do not change. In this mode,
+ * the snapshot entry_count is always 0.
+ *
+ * Copy mode - this returns the previous snapshot
+ * collected by the system. The current snaphshot
+ * might be only half populated.
+ *
+ * Snapshots are inherently racey between request
+ * for buffer size and actual data compilation.
+ */
+
+/* These definitions are required for backwards compatibility */
+#define MEMORYSTATUS_SNAPSHOT_ON_DEMAND MEMORYSTATUS_FLAGS_SNAPSHOT_ON_DEMAND
+#define MEMORYSTATUS_SNAPSHOT_AT_BOOT MEMORYSTATUS_FLAGS_SNAPSHOT_AT_BOOT
+#define MEMORYSTATUS_SNAPSHOT_COPY MEMORYSTATUS_FLAGS_SNAPSHOT_COPY
+
+/*
+ * For use with memorystatus_control:
+ * MEMORYSTATUS_CMD_SET_PRIORITY_PROPERTIES
+ */
typedef struct memorystatus_priority_properties {
int32_t priority;
uint64_t user_data;
} memorystatus_priority_properties_t;
+/*
+ * Inform the kernel that setting the priority property is driven by assertions.
+ */
+#define MEMORYSTATUS_SET_PRIORITY_ASSERTION 0x1
+
+/*
+ * For use with memorystatus_control:
+ * MEMORYSTATUS_CMD_SET_MEMLIMIT_PROPERTIES
+ * MEMORYSTATUS_CMD_GET_MEMLIMIT_PROPERTIES
+ */
+typedef struct memorystatus_memlimit_properties {
+ int32_t memlimit_active; /* jetsam memory limit (in MB) when process is active */
+ uint32_t memlimit_active_attr;
+ int32_t memlimit_inactive; /* jetsam memory limit (in MB) when process is inactive */
+ uint32_t memlimit_inactive_attr;
+} memorystatus_memlimit_properties_t;
+
+typedef struct memorystatus_memlimit_properties2 {
+ memorystatus_memlimit_properties_t v1;
+ uint32_t memlimit_increase; /* jetsam memory limit increase (in MB) for active and inactive states */
+ uint32_t memlimit_increase_bytes; /* bytes used to determine the jetsam memory limit increase, for active and inactive states */
+} memorystatus_memlimit_properties2_t;
+
+#define MEMORYSTATUS_MEMLIMIT_ATTR_FATAL 0x1 /* if set, exceeding the memlimit is fatal */
+
#ifdef XNU_KERNEL_PRIVATE
-/* p_memstat_state flags */
-
-#define P_MEMSTAT_SUSPENDED 0x00000001
-#define P_MEMSTAT_FROZEN 0x00000002
-#define P_MEMSTAT_NORECLAIM 0x00000004
-#define P_MEMSTAT_ERROR 0x00000008
-#define P_MEMSTAT_LOCKED 0x00000010
-#define P_MEMSTAT_TERMINATED 0x00000020
-#define P_MEMSTAT_NOTFIED 0x00000040
-#define P_MEMSTAT_PRIORITYUPDATED 0x00000080
-#define P_MEMSTAT_FOREGROUND 0x00000100
-#define P_MEMSTAT_DIAG_SUSPENDED 0x00000200
-#define P_MEMSTAT_PRIOR_THAW 0x00000400
-#define P_MEMSTAT_MEMLIMIT_BACKGROUND 0x00000800 /* Task has a memory limit for when it's in the background. Used for a process' "high water mark".*/
-#define P_MEMSTAT_INTERNAL 0x00001000
-#define P_MEMSTAT_FATAL_MEMLIMIT 0x00002000 /* cross this limit and the process is killed. Types: system-wide default task memory limit and per-task custom memory limit. */
+/*
+ * A process will be killed immediately if it crosses a memory limit marked as fatal.
+ * Fatal limit types are the
+ * - default system-wide task limit
+ * - per-task custom memory limit
+ *
+ * A process with a non-fatal memory limit can exceed that limit, but becomes an early
+ * candidate for jetsam when the device is under memory pressure.
+ * Non-fatal limit types are the
+ * - high-water-mark limit
+ *
+ * Processes that opt into dirty tracking are evaluated
+ * based on clean vs dirty state.
+ * dirty ==> active
+ * clean ==> inactive
+ *
+ * Processes that do not opt into dirty tracking are
+ * evalulated based on priority level.
+ * Foreground or above ==> active
+ * Below Foreground ==> inactive
+ */
+
+/*
+ * p_memstat_state flag holds
+ * - in kernel process state and memlimit state
+ */
+
+#define P_MEMSTAT_SUSPENDED 0x00000001 /* Process is suspended and likely in the IDLE band */
+#define P_MEMSTAT_FROZEN 0x00000002 /* Process has some state on disk. It should be suspended */
+#define P_MEMSTAT_FREEZE_DISABLED 0x00000004 /* Process isn't freeze-eligible and will not be frozen */
+#define P_MEMSTAT_ERROR 0x00000008 /* Process couldn't be jetsammed for some reason. Transient state so jetsam can skip it next time it sees it */
+#define P_MEMSTAT_LOCKED 0x00000010 /* Process is being actively worked on behind the proc_list_lock */
+#define P_MEMSTAT_TERMINATED 0x00000020 /* Process is exiting */
+#define P_MEMSTAT_FREEZE_IGNORE 0x00000040 /* Process was evaluated by freezer and will be ignored till the next time it goes active and does something */
+#define P_MEMSTAT_PRIORITYUPDATED 0x00000080 /* Process had its jetsam priority updated */
+#define P_MEMSTAT_FOREGROUND 0x00000100 /* Process is in the FG jetsam band...unused??? */
+#define P_MEMSTAT_REFREEZE_ELIGIBLE 0x00000400 /* Process was once thawed i.e. its state was brought back from disk. It is now refreeze eligible.*/
+#define P_MEMSTAT_MANAGED 0x00000800 /* Process is managed by assertiond i.e. is either application or extension */
+#define P_MEMSTAT_INTERNAL 0x00001000 /* Process is a system-critical-not-be-jetsammed process i.e. launchd */
+#define P_MEMSTAT_FATAL_MEMLIMIT 0x00002000 /* current fatal state of the process's memlimit */
+#define P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL 0x00004000 /* if set, exceeding limit is fatal when the process is active */
+#define P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL 0x00008000 /* if set, exceeding limit is fatal when the process is inactive */
+#define P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND 0x00010000 /* if set, the process will go into this band & stay there when in the background instead
+ * of the aging bands and/or the IDLE band. */
+#define P_MEMSTAT_PRIORITY_ASSERTION 0x00020000 /* jetsam priority is being driven by an assertion */
+
+
+/*
+ * p_memstat_relaunch_flags holds
+ * - relaunch behavior when jetsammed
+ */
+#define P_MEMSTAT_RELAUNCH_UNKNOWN 0x0
+#define P_MEMSTAT_RELAUNCH_LOW 0x1
+#define P_MEMSTAT_RELAUNCH_MED 0x2
+#define P_MEMSTAT_RELAUNCH_HIGH 0x4
+
+/*
+ * Checking the p_memstat_state almost always requires the proc_list_lock
+ * because the jetsam thread could be on the other core changing the state.
+ *
+ * App -- almost always managed by a system process. Always have dirty tracking OFF. Can include extensions too.
+ * System Processes -- not managed by anybody. Always have dirty tracking ON. Can include extensions (here) too.
+ */
+#define isApp(p) ((p->p_memstat_state & P_MEMSTAT_MANAGED) || ! (p->p_memstat_dirty & P_DIRTY_TRACK))
+#define isSysProc(p) ( ! (p->p_memstat_state & P_MEMSTAT_MANAGED) || (p->p_memstat_dirty & P_DIRTY_TRACK))
+
+#define MEMSTAT_BUCKET_COUNT (JETSAM_PRIORITY_MAX + 1)
+
+typedef struct memstat_bucket {
+ TAILQ_HEAD(, proc) list;
+ int count;
+ int relaunch_high_count;
+} memstat_bucket_t;
+
+extern memstat_bucket_t memstat_bucket[MEMSTAT_BUCKET_COUNT];
+
+/*
+ * Table that expresses the probability of a process
+ * being used in the next hour.
+ */
+typedef struct memorystatus_internal_probabilities {
+ char proc_name[MAXCOMLEN + 1];
+ int use_probability;
+} memorystatus_internal_probabilities_t;
+
+extern memorystatus_internal_probabilities_t *memorystatus_global_probabilities_table;
+extern size_t memorystatus_global_probabilities_size;
+
extern void memorystatus_init(void) __attribute__((section("__TEXT, initcode")));
+extern void memorystatus_init_at_boot_snapshot(void);
+
extern int memorystatus_add(proc_t p, boolean_t locked);
-extern int memorystatus_update(proc_t p, int priority, uint64_t user_data, boolean_t effective, boolean_t update_memlimit, int32_t memlimit, boolean_t memlimit_background, boolean_t is_fatal_limit);
-extern int memorystatus_remove(proc_t p, boolean_t locked);
+extern int memorystatus_update(proc_t p, int priority, uint64_t user_data, boolean_t is_assertion, boolean_t effective,
+ boolean_t update_memlimit, int32_t memlimit_active, boolean_t memlimit_active_is_fatal,
+ int32_t memlimit_inactive, boolean_t memlimit_inactive_is_fatal);
+
+/* Remove this process from jetsam bands for killing or freezing.
+ * The proc_list_lock is held by the caller.
+ * @param p: The process to remove.
+ * @return: 0 if successful. EAGAIN if the process can't be removed right now (because it's being frozen) or ESRCH.
+ */
+extern int memorystatus_remove(proc_t p);
+
+int memorystatus_update_inactive_jetsam_priority_band(pid_t pid, uint32_t opflags, int priority, boolean_t effective_now);
+int memorystatus_relaunch_flags_update(proc_t p, int relaunch_flags);
extern int memorystatus_dirty_track(proc_t p, uint32_t pcontrol);
extern int memorystatus_dirty_set(proc_t p, boolean_t self, uint32_t pcontrol);
-extern int memorystatus_dirty_get(proc_t p);
+extern int memorystatus_dirty_get(proc_t p, boolean_t locked);
extern int memorystatus_dirty_clear(proc_t p, uint32_t pcontrol);
extern int memorystatus_on_terminate(proc_t p);
int memorystatus_knote_register(struct knote *kn);
void memorystatus_knote_unregister(struct knote *kn);
+#if CONFIG_MEMORYSTATUS
+void memorystatus_log_exception(const int max_footprint_mb, boolean_t memlimit_is_active, boolean_t memlimit_is_fatal);
+void memorystatus_on_ledger_footprint_exceeded(int warning, boolean_t memlimit_is_active, boolean_t memlimit_is_fatal);
+void proc_memstat_terminated(proc_t p, boolean_t set);
+void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty, boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit);
+
+#if __arm64__
+void memorystatus_act_on_legacy_footprint_entitlement(proc_t p, boolean_t footprint_increase);
+void memorystatus_act_on_ios13extended_footprint_entitlement(proc_t p);
+#endif /* __arm64__ */
+
+#endif /* CONFIG_MEMORYSTATUS */
+
+int memorystatus_get_pressure_status_kdp(void);
+
#if CONFIG_JETSAM
typedef enum memorystatus_policy {
- kPolicyDefault = 0x0,
+ kPolicyDefault = 0x0,
kPolicyMoreFree = 0x1,
- kPolicyDiagnoseAll = 0x2,
- kPolicyDiagnoseFirst = 0x4,
- kPolicyDiagnoseActive = (kPolicyDiagnoseAll | kPolicyDiagnoseFirst),
} memorystatus_policy_t;
-extern int memorystatus_jetsam_wakeup;
-extern unsigned int memorystatus_jetsam_running;
-
boolean_t memorystatus_kill_on_VM_page_shortage(boolean_t async);
-boolean_t memorystatus_kill_on_VM_thrashing(boolean_t async);
boolean_t memorystatus_kill_on_FC_thrashing(boolean_t async);
+boolean_t memorystatus_kill_on_VM_compressor_thrashing(boolean_t async);
boolean_t memorystatus_kill_on_vnode_limit(void);
-void memorystatus_on_ledger_footprint_exceeded(int warning, const int max_footprint_mb);
void jetsam_on_ledger_cpulimit_exceeded(void);
+void memorystatus_fast_jetsam_override(boolean_t enable_override);
-void memorystatus_pages_update(unsigned int pages_avail);
+#endif /* CONFIG_JETSAM */
-#else /* CONFIG_JETSAM */
+/* These are very verbose printfs(), enable with
+ * MEMORYSTATUS_DEBUG_LOG
+ */
+#if MEMORYSTATUS_DEBUG_LOG
+#define MEMORYSTATUS_DEBUG(cond, format, ...) \
+do { \
+if (cond) { printf(format, ##__VA_ARGS__); } \
+} while(0)
+#else
+#define MEMORYSTATUS_DEBUG(cond, format, ...)
+#endif
+boolean_t memorystatus_kill_on_zone_map_exhaustion(pid_t pid);
+boolean_t memorystatus_kill_on_VM_compressor_space_shortage(boolean_t async);
+void memorystatus_pages_update(unsigned int pages_avail);
boolean_t memorystatus_idle_exit_from_VM(void);
-
-#endif /* !CONFIG_JETSAM */
-
-#ifdef CONFIG_FREEZE
-
-#define FREEZE_PAGES_MIN ( 1 * 1024 * 1024 / PAGE_SIZE)
-#define FREEZE_PAGES_MAX (16 * 1024 * 1024 / PAGE_SIZE)
-
-#define FREEZE_SUSPENDED_THRESHOLD_LOW 2
-#define FREEZE_SUSPENDED_THRESHOLD_DEFAULT 4
-
-#define FREEZE_DAILY_MB_MAX 1024
-#define FREEZE_DAILY_PAGEOUTS_MAX (FREEZE_DAILY_MB_MAX * (1024 * 1024 / PAGE_SIZE))
-
-typedef struct throttle_interval_t {
- uint32_t mins;
- uint32_t burst_multiple;
- uint32_t pageouts;
- uint32_t max_pageouts;
- mach_timespec_t ts;
- boolean_t throttle;
-} throttle_interval_t;
-
-extern boolean_t memorystatus_freeze_enabled;
-extern int memorystatus_freeze_wakeup;
-
-extern void memorystatus_freeze_init(void) __attribute__((section("__TEXT, initcode")));
-
-#endif /* CONFIG_FREEZE */
+proc_t memorystatus_get_first_proc_locked(unsigned int *bucket_index, boolean_t search);
+proc_t memorystatus_get_next_proc_locked(unsigned int *bucket_index, proc_t p, boolean_t search);
+void memorystatus_get_task_page_counts(task_t task, uint32_t *footprint, uint32_t *max_footprint_lifetime, uint32_t *purgeable_pages);
+void memorystatus_invalidate_idle_demotion_locked(proc_t p, boolean_t clean_state);
+void memorystatus_update_priority_locked(proc_t p, int priority, boolean_t head_insert, boolean_t skip_demotion_check);
#if VM_PRESSURE_EVENTS
extern kern_return_t memorystatus_update_vm_pressure(boolean_t);
#if CONFIG_MEMORYSTATUS
+/* Flags */
+extern int memorystatus_low_mem_privileged_listener(uint32_t op_flags);
extern int memorystatus_send_pressure_note(int pid);
extern boolean_t memorystatus_is_foreground_locked(proc_t p);
extern boolean_t memorystatus_bg_pressure_eligible(proc_t p);
projects / apple / xnu.git / blobdiff