* Copyright (c) 2006-2018 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@
*
*/
#include <vm/vm_map.h>
#endif /* CONFIG_FREEZE */
-#include <sys/kern_memorystatus.h>
+#include <sys/kern_memorystatus.h>
#include <mach/machine/sdt.h>
#include <libkern/section_keywords.h>
/* For logging clarity */
static const char *memorystatus_kill_cause_name[] = {
- "" , /* kMemorystatusInvalid */
- "jettisoned" , /* kMemorystatusKilled */
- "highwater" , /* kMemorystatusKilledHiwat */
- "vnode-limit" , /* kMemorystatusKilledVnodes */
- "vm-pageshortage" , /* kMemorystatusKilledVMPageShortage */
- "proc-thrashing" , /* kMemorystatusKilledProcThrashing */
- "fc-thrashing" , /* kMemorystatusKilledFCThrashing */
- "per-process-limit" , /* kMemorystatusKilledPerProcessLimit */
- "disk-space-shortage" , /* kMemorystatusKilledDiskSpaceShortage */
- "idle-exit" , /* kMemorystatusKilledIdleExit */
- "zone-map-exhaustion" , /* kMemorystatusKilledZoneMapExhaustion */
- "vm-compressor-thrashing" , /* kMemorystatusKilledVMCompressorThrashing */
- "vm-compressor-space-shortage" , /* kMemorystatusKilledVMCompressorSpaceShortage */
+ "", /* kMemorystatusInvalid */
+ "jettisoned", /* kMemorystatusKilled */
+ "highwater", /* kMemorystatusKilledHiwat */
+ "vnode-limit", /* kMemorystatusKilledVnodes */
+ "vm-pageshortage", /* kMemorystatusKilledVMPageShortage */
+ "proc-thrashing", /* kMemorystatusKilledProcThrashing */
+ "fc-thrashing", /* kMemorystatusKilledFCThrashing */
+ "per-process-limit", /* kMemorystatusKilledPerProcessLimit */
+ "disk-space-shortage", /* kMemorystatusKilledDiskSpaceShortage */
+ "idle-exit", /* kMemorystatusKilledIdleExit */
+ "zone-map-exhaustion", /* kMemorystatusKilledZoneMapExhaustion */
+ "vm-compressor-thrashing", /* kMemorystatusKilledVMCompressorThrashing */
+ "vm-compressor-space-shortage", /* kMemorystatusKilledVMCompressorSpaceShortage */
};
static const char *
return "CRITICAL";
}
- return ("?");
+ return "?";
}
/* Does cause indicate vm or fc thrashing? */
static boolean_t
is_reason_zone_map_exhaustion(unsigned cause)
{
- if (cause == kMemorystatusKilledZoneMapExhaustion)
+ if (cause == kMemorystatusKilledZoneMapExhaustion) {
return TRUE;
+ }
return FALSE;
}
* soon be in effect down in the ledgers.
*/
-#define SET_ACTIVE_LIMITS_LOCKED(p, limit, is_fatal) \
-MACRO_BEGIN \
-(p)->p_memstat_memlimit_active = (limit); \
- if (is_fatal) { \
- (p)->p_memstat_state |= P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL; \
- } else { \
- (p)->p_memstat_state &= ~P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL; \
- } \
+#define SET_ACTIVE_LIMITS_LOCKED(p, limit, is_fatal) \
+MACRO_BEGIN \
+(p)->p_memstat_memlimit_active = (limit); \
+ if (is_fatal) { \
+ (p)->p_memstat_state |= P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL; \
+ } else { \
+ (p)->p_memstat_state &= ~P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL; \
+ } \
MACRO_END
-#define SET_INACTIVE_LIMITS_LOCKED(p, limit, is_fatal) \
-MACRO_BEGIN \
-(p)->p_memstat_memlimit_inactive = (limit); \
- if (is_fatal) { \
- (p)->p_memstat_state |= P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL; \
- } else { \
- (p)->p_memstat_state &= ~P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL; \
- } \
+#define SET_INACTIVE_LIMITS_LOCKED(p, limit, is_fatal) \
+MACRO_BEGIN \
+(p)->p_memstat_memlimit_inactive = (limit); \
+ if (is_fatal) { \
+ (p)->p_memstat_state |= P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL; \
+ } else { \
+ (p)->p_memstat_state &= ~P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL; \
+ } \
MACRO_END
-#define CACHE_ACTIVE_LIMITS_LOCKED(p, is_fatal) \
-MACRO_BEGIN \
-(p)->p_memstat_memlimit = (p)->p_memstat_memlimit_active; \
- if ((p)->p_memstat_state & P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL) { \
- (p)->p_memstat_state |= P_MEMSTAT_FATAL_MEMLIMIT; \
- is_fatal = TRUE; \
- } else { \
- (p)->p_memstat_state &= ~P_MEMSTAT_FATAL_MEMLIMIT; \
- is_fatal = FALSE; \
- } \
+#define CACHE_ACTIVE_LIMITS_LOCKED(p, is_fatal) \
+MACRO_BEGIN \
+(p)->p_memstat_memlimit = (p)->p_memstat_memlimit_active; \
+ if ((p)->p_memstat_state & P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL) { \
+ (p)->p_memstat_state |= P_MEMSTAT_FATAL_MEMLIMIT; \
+ is_fatal = TRUE; \
+ } else { \
+ (p)->p_memstat_state &= ~P_MEMSTAT_FATAL_MEMLIMIT; \
+ is_fatal = FALSE; \
+ } \
MACRO_END
-#define CACHE_INACTIVE_LIMITS_LOCKED(p, is_fatal) \
-MACRO_BEGIN \
-(p)->p_memstat_memlimit = (p)->p_memstat_memlimit_inactive; \
- if ((p)->p_memstat_state & P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL) { \
- (p)->p_memstat_state |= P_MEMSTAT_FATAL_MEMLIMIT; \
- is_fatal = TRUE; \
- } else { \
- (p)->p_memstat_state &= ~P_MEMSTAT_FATAL_MEMLIMIT; \
- is_fatal = FALSE; \
- } \
+#define CACHE_INACTIVE_LIMITS_LOCKED(p, is_fatal) \
+MACRO_BEGIN \
+(p)->p_memstat_memlimit = (p)->p_memstat_memlimit_inactive; \
+ if ((p)->p_memstat_state & P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL) { \
+ (p)->p_memstat_state |= P_MEMSTAT_FATAL_MEMLIMIT; \
+ is_fatal = TRUE; \
+ } else { \
+ (p)->p_memstat_state &= ~P_MEMSTAT_FATAL_MEMLIMIT; \
+ is_fatal = FALSE; \
+ } \
MACRO_END
#define MEMSTAT_BUCKET_COUNT (JETSAM_PRIORITY_MAX + 1)
typedef struct memstat_bucket {
- TAILQ_HEAD(, proc) list;
- int count;
+ TAILQ_HEAD(, proc) list;
+ int count;
} memstat_bucket_t;
memstat_bucket_t memstat_bucket[MEMSTAT_BUCKET_COUNT];
int system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
int applications_aging_band = JETSAM_PRIORITY_IDLE;
-#define isProcessInAgingBands(p) ((isSysProc(p) && system_procs_aging_band && (p->p_memstat_effectivepriority == system_procs_aging_band)) || (isApp(p) && applications_aging_band && (p->p_memstat_effectivepriority == applications_aging_band)))
+#define isProcessInAgingBands(p) ((isSysProc(p) && system_procs_aging_band && (p->p_memstat_effectivepriority == system_procs_aging_band)) || (isApp(p) && applications_aging_band && (p->p_memstat_effectivepriority == applications_aging_band)))
/*
* Checking the p_memstat_state almost always requires the proc_list_lock
* 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 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 kJetsamAgingPolicyNone (0)
-#define kJetsamAgingPolicyLegacy (1)
-#define kJetsamAgingPolicySysProcsReclaimedFirst (2)
-#define kJetsamAgingPolicyAppsReclaimedFirst (3)
-#define kJetsamAgingPolicyMax kJetsamAgingPolicyAppsReclaimedFirst
+#define kJetsamAgingPolicyNone (0)
+#define kJetsamAgingPolicyLegacy (1)
+#define kJetsamAgingPolicySysProcsReclaimedFirst (2)
+#define kJetsamAgingPolicyAppsReclaimedFirst (3)
+#define kJetsamAgingPolicyMax kJetsamAgingPolicyAppsReclaimedFirst
unsigned int jetsam_aging_policy = kJetsamAgingPolicyLegacy;
error = sysctl_io_number(req, jetsam_aging_policy, sizeof(int), &val, NULL);
if (error || !req->newptr) {
- return (error);
+ return error;
}
if ((val < 0) || (val > kJetsamAgingPolicyMax)) {
* that might be in progress currently. We use the proc_list_lock() just for
* consistency with all the routines dealing with 'aging' processes. We need
* a lighterweight lock.
- */
+ */
proc_list_lock();
old_system_procs_aging_band = system_procs_aging_band;
old_applications_aging_band = applications_aging_band;
-
- switch (val) {
- case kJetsamAgingPolicyNone:
- new_system_procs_aging_band = JETSAM_PRIORITY_IDLE;
- new_applications_aging_band = JETSAM_PRIORITY_IDLE;
- break;
+ switch (val) {
+ case kJetsamAgingPolicyNone:
+ new_system_procs_aging_band = JETSAM_PRIORITY_IDLE;
+ new_applications_aging_band = JETSAM_PRIORITY_IDLE;
+ break;
- case kJetsamAgingPolicyLegacy:
- /*
- * Legacy behavior where some daemons get a 10s protection once and only before the first clean->dirty->clean transition before going into IDLE band.
- */
- new_system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
- new_applications_aging_band = JETSAM_PRIORITY_IDLE;
- break;
+ case kJetsamAgingPolicyLegacy:
+ /*
+ * Legacy behavior where some daemons get a 10s protection once and only before the first clean->dirty->clean transition before going into IDLE band.
+ */
+ new_system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
+ new_applications_aging_band = JETSAM_PRIORITY_IDLE;
+ break;
- case kJetsamAgingPolicySysProcsReclaimedFirst:
- new_system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
- new_applications_aging_band = JETSAM_PRIORITY_AGING_BAND2;
- break;
+ case kJetsamAgingPolicySysProcsReclaimedFirst:
+ new_system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
+ new_applications_aging_band = JETSAM_PRIORITY_AGING_BAND2;
+ break;
- case kJetsamAgingPolicyAppsReclaimedFirst:
- new_system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND2;
- new_applications_aging_band = JETSAM_PRIORITY_AGING_BAND1;
- break;
+ case kJetsamAgingPolicyAppsReclaimedFirst:
+ new_system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND2;
+ new_applications_aging_band = JETSAM_PRIORITY_AGING_BAND1;
+ break;
- default:
- break;
+ default:
+ break;
}
if (old_system_procs_aging_band && (old_system_procs_aging_band != new_system_procs_aging_band)) {
-
old_bucket = &memstat_bucket[old_system_procs_aging_band];
p = TAILQ_FIRST(&old_bucket->list);
-
+
while (p) {
-
next_proc = TAILQ_NEXT(p, p_memstat_list);
if (isSysProc(p)) {
}
if (old_applications_aging_band && (old_applications_aging_band != new_applications_aging_band)) {
-
old_bucket = &memstat_bucket[old_applications_aging_band];
p = TAILQ_FIRST(&old_bucket->list);
-
- while (p) {
+ while (p) {
next_proc = TAILQ_NEXT(p, p_memstat_list);
if (isApp(p)) {
proc_list_unlock();
- return (0);
+ return 0;
}
-SYSCTL_PROC(_kern, OID_AUTO, set_jetsam_aging_policy, CTLTYPE_INT|CTLFLAG_RW,
- 0, 0, sysctl_set_jetsam_aging_policy, "I", "Jetsam Aging Policy");
+SYSCTL_PROC(_kern, OID_AUTO, set_jetsam_aging_policy, CTLTYPE_INT | CTLFLAG_RW,
+ 0, 0, sysctl_set_jetsam_aging_policy, "I", "Jetsam Aging Policy");
#endif /*0*/
static int
error = sysctl_io_number(req, old_time_in_secs, sizeof(int), &val, NULL);
if (error || !req->newptr) {
- return (error);
+ return error;
}
if ((val < 0) || (val > INT32_MAX)) {
}
nanoseconds_to_absolutetime((uint64_t)val * NSEC_PER_SEC, &memorystatus_sysprocs_idle_delay_time);
-
- return(0);
+
+ return 0;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_sysprocs_idle_delay_time, CTLTYPE_INT|CTLFLAG_RW,
- 0, 0, sysctl_jetsam_set_sysprocs_idle_delay_time, "I", "Aging window for system processes");
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_sysprocs_idle_delay_time, CTLTYPE_INT | CTLFLAG_RW,
+ 0, 0, sysctl_jetsam_set_sysprocs_idle_delay_time, "I", "Aging window for system processes");
static int
error = sysctl_io_number(req, old_time_in_secs, sizeof(int), &val, NULL);
if (error || !req->newptr) {
- return (error);
+ return error;
}
if ((val < 0) || (val > INT32_MAX)) {
}
nanoseconds_to_absolutetime((uint64_t)val * NSEC_PER_SEC, &memorystatus_apps_idle_delay_time);
-
- return(0);
+
+ return 0;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_apps_idle_delay_time, CTLTYPE_INT|CTLFLAG_RW,
- 0, 0, sysctl_jetsam_set_apps_idle_delay_time, "I", "Aging window for applications");
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_apps_idle_delay_time, CTLTYPE_INT | CTLFLAG_RW,
+ 0, 0, sysctl_jetsam_set_apps_idle_delay_time, "I", "Aging window for applications");
-SYSCTL_INT(_kern, OID_AUTO, jetsam_aging_policy, CTLTYPE_INT|CTLFLAG_RD, &jetsam_aging_policy, 0, "");
+SYSCTL_INT(_kern, OID_AUTO, jetsam_aging_policy, CTLTYPE_INT | CTLFLAG_RD, &jetsam_aging_policy, 0, "");
static unsigned int memorystatus_dirty_count = 0;
-SYSCTL_INT(_kern, OID_AUTO, max_task_pmem, CTLFLAG_RD|CTLFLAG_LOCKED|CTLFLAG_MASKED, &max_task_footprint_mb, 0, "");
+SYSCTL_INT(_kern, OID_AUTO, max_task_pmem, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_MASKED, &max_task_footprint_mb, 0, "");
#if CONFIG_EMBEDDED
-SYSCTL_INT(_kern, OID_AUTO, memorystatus_level, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_level, 0, "");
+SYSCTL_INT(_kern, OID_AUTO, memorystatus_level, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_level, 0, "");
#endif /* CONFIG_EMBEDDED */
int
memorystatus_get_level(__unused struct proc *p, struct memorystatus_get_level_args *args, __unused int *ret)
{
- user_addr_t level = 0;
-
+ user_addr_t level = 0;
+
level = args->level;
-
+
if (copyout(&memorystatus_level, level, sizeof(memorystatus_level)) != 0) {
return EFAULT;
}
-
+
return 0;
}
unsigned int memorystatus_delta = 0;
/* Jetsam Loop Detection */
-static boolean_t memorystatus_jld_enabled = FALSE; /* Enable jetsam loop detection */
-static uint32_t memorystatus_jld_eval_period_msecs = 0; /* Init pass sets this based on device memory size */
-static int memorystatus_jld_eval_aggressive_count = 3; /* Raise the priority max after 'n' aggressive loops */
+static boolean_t memorystatus_jld_enabled = FALSE; /* Enable jetsam loop detection */
+static uint32_t memorystatus_jld_eval_period_msecs = 0; /* Init pass sets this based on device memory size */
+static int memorystatus_jld_eval_aggressive_count = 3; /* Raise the priority max after 'n' aggressive loops */
static int memorystatus_jld_eval_aggressive_priority_band_max = 15; /* Kill aggressively up through this band */
/*
*
* RESTRICTIONS:
* - Such a request is respected/acknowledged only once while that 'requesting' app is in the FG band i.e. if aggressive jetsam was
- * needed and the 'lenient' mode was deployed then that's it for this special mode while the app is in the FG band.
+ * needed and the 'lenient' mode was deployed then that's it for this special mode while the app is in the FG band.
*
* - If the app is still in the FG band and aggressive jetsam is needed again, there will be no stop-and-check the next time around.
*
* - Also, the transition of the 'requesting' app away from the FG band will void this special behavior.
*/
-#define AGGRESSIVE_JETSAM_LENIENT_MODE_THRESHOLD 25
-boolean_t memorystatus_aggressive_jetsam_lenient_allowed = FALSE;
-boolean_t memorystatus_aggressive_jetsam_lenient = FALSE;
+#define AGGRESSIVE_JETSAM_LENIENT_MODE_THRESHOLD 25
+boolean_t memorystatus_aggressive_jetsam_lenient_allowed = FALSE;
+boolean_t memorystatus_aggressive_jetsam_lenient = FALSE;
#if DEVELOPMENT || DEBUG
-/*
+/*
* Jetsam Loop Detection tunables.
*/
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jld_eval_period_msecs, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_jld_eval_period_msecs, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jld_eval_aggressive_count, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_jld_eval_aggressive_count, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jld_eval_aggressive_priority_band_max, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_jld_eval_aggressive_priority_band_max, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jld_eval_period_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_jld_eval_period_msecs, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jld_eval_aggressive_count, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_jld_eval_aggressive_count, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jld_eval_aggressive_priority_band_max, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_jld_eval_aggressive_priority_band_max, 0, "");
#endif /* DEVELOPMENT || DEBUG */
static uint32_t kill_under_pressure_cause = 0;
static void memorystatus_clear_errors(void);
static void memorystatus_get_task_page_counts(task_t task, uint32_t *footprint, uint32_t *max_footprint_lifetime, uint32_t *purgeable_pages);
static void memorystatus_get_task_phys_footprint_page_counts(task_t task,
- uint64_t *internal_pages, uint64_t *internal_compressed_pages,
- uint64_t *purgeable_nonvolatile_pages, uint64_t *purgeable_nonvolatile_compressed_pages,
- uint64_t *alternate_accounting_pages, uint64_t *alternate_accounting_compressed_pages,
- uint64_t *iokit_mapped_pages, uint64_t *page_table_pages);
+ uint64_t *internal_pages, uint64_t *internal_compressed_pages,
+ uint64_t *purgeable_nonvolatile_pages, uint64_t *purgeable_nonvolatile_compressed_pages,
+ uint64_t *alternate_accounting_pages, uint64_t *alternate_accounting_compressed_pages,
+ uint64_t *iokit_mapped_pages, uint64_t *page_table_pages);
static void memorystatus_get_task_memory_region_count(task_t task, uint64_t *count);
extern unsigned int vm_page_purgeable_count;
extern unsigned int vm_page_wire_count;
#if CONFIG_SECLUDED_MEMORY
-extern unsigned int vm_page_secluded_count;
+extern unsigned int vm_page_secluded_count;
#endif /* CONFIG_SECLUDED_MEMORY */
#if CONFIG_JETSAM
#if VM_PRESSURE_EVENTS
-boolean_t memorystatus_warn_process(pid_t pid, __unused boolean_t is_active, __unused boolean_t is_fatal, boolean_t exceeded);
+boolean_t memorystatus_warn_process(pid_t pid, __unused boolean_t is_active, __unused boolean_t is_fatal, boolean_t exceeded);
vm_pressure_level_t memorystatus_vm_pressure_level = kVMPressureNormal;
* This value is the threshold that a process must meet to be considered for scavenging.
*/
#if CONFIG_EMBEDDED
-#define VM_PRESSURE_MINIMUM_RSIZE 6 /* MB */
+#define VM_PRESSURE_MINIMUM_RSIZE 6 /* MB */
#else /* CONFIG_EMBEDDED */
-#define VM_PRESSURE_MINIMUM_RSIZE 10 /* MB */
+#define VM_PRESSURE_MINIMUM_RSIZE 10 /* MB */
#endif /* CONFIG_EMBEDDED */
uint32_t vm_pressure_task_footprint_min = VM_PRESSURE_MINIMUM_RSIZE;
#if DEVELOPMENT || DEBUG
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_vm_pressure_task_footprint_min, CTLFLAG_RW|CTLFLAG_LOCKED, &vm_pressure_task_footprint_min, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_vm_pressure_task_footprint_min, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pressure_task_footprint_min, 0, "");
#endif /* DEVELOPMENT || DEBUG */
#endif /* VM_PRESSURE_EVENTS */
static unsigned int memorystatus_freeze_suspended_threshold = FREEZE_SUSPENDED_THRESHOLD_DEFAULT;
static unsigned int memorystatus_freeze_daily_mb_max = FREEZE_DAILY_MB_MAX_DEFAULT;
-static uint64_t memorystatus_freeze_budget_pages_remaining = 0; //remaining # of pages that can be frozen to disk
+static uint64_t memorystatus_freeze_budget_pages_remaining = 0; //remaining # of pages that can be frozen to disk
static boolean_t memorystatus_freeze_degradation = FALSE; //protected by the freezer mutex. Signals we are in a degraded freeze mode.
static unsigned int memorystatus_max_frozen_demotions_daily = 0;
static uint64_t memorystatus_freeze_pageouts = 0;
/* Throttling */
-#define DEGRADED_WINDOW_MINS (30)
-#define NORMAL_WINDOW_MINS (24 * 60)
+#define DEGRADED_WINDOW_MINS (30)
+#define NORMAL_WINDOW_MINS (24 * 60)
static throttle_interval_t throttle_intervals[] = {
{ DEGRADED_WINDOW_MINS, 1, 0, 0, { 0, 0 }},
static uint64_t memorystatus_freezer_thread_next_run_ts = 0;
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_count, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_frozen_count, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_thaw_count, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_thaw_count, 0, "");
-SYSCTL_QUAD(_kern, OID_AUTO, memorystatus_freeze_pageouts, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_freeze_pageouts, "");
-SYSCTL_QUAD(_kern, OID_AUTO, memorystatus_freeze_budget_pages_remaining, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_freeze_budget_pages_remaining, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_count, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_frozen_count, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_thaw_count, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_thaw_count, 0, "");
+SYSCTL_QUAD(_kern, OID_AUTO, memorystatus_freeze_pageouts, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_freeze_pageouts, "");
+SYSCTL_QUAD(_kern, OID_AUTO, memorystatus_freeze_budget_pages_remaining, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_freeze_budget_pages_remaining, "");
#endif /* CONFIG_FREEZE */
static unsigned int memorystatus_debug_dump_this_bucket = 0;
static void
-memorystatus_debug_dump_bucket_locked (unsigned int bucket_index)
+memorystatus_debug_dump_bucket_locked(unsigned int bucket_index)
{
proc_t p = NULL;
uint64_t bytes = 0;
unsigned int b = bucket_index;
boolean_t traverse_all_buckets = FALSE;
- if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
+ if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
traverse_all_buckets = TRUE;
b = 0;
- } else {
+ } else {
traverse_all_buckets = FALSE;
b = bucket_index;
}
* F==Fatal, NF==NonFatal
*/
- printf("memorystatus_debug_dump ***START*(PAGE_SIZE_64=%llu)**\n", PAGE_SIZE_64);
+ printf("memorystatus_debug_dump ***START*(PAGE_SIZE_64=%llu)**\n", PAGE_SIZE_64);
printf("bucket [pid] [pages / MB] [state] [EP / RP] dirty deadline [L-limit / C-limit / A-limit / IA-limit] name\n");
p = memorystatus_get_first_proc_locked(&b, traverse_all_buckets);
while (p) {
bytes = get_task_phys_footprint(p->task);
task_get_phys_footprint_limit(p->task, &ledger_limit);
printf("%2d [%5d] [%5lld /%3lldMB] 0x%-8x [%2d / %2d] 0x%-3x %10lld [%3d / %3d%s / %3d%s / %3d%s] %s\n",
- b, p->p_pid,
- (bytes / PAGE_SIZE_64), /* task's footprint converted from bytes to pages */
- (bytes / (1024ULL * 1024ULL)), /* task's footprint converted from bytes to MB */
- p->p_memstat_state, p->p_memstat_effectivepriority, p->p_memstat_requestedpriority, p->p_memstat_dirty, p->p_memstat_idledeadline,
- ledger_limit,
- p->p_memstat_memlimit,
- (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"),
- p->p_memstat_memlimit_active,
- (p->p_memstat_state & P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL ? "F " : "NF"),
- p->p_memstat_memlimit_inactive,
- (p->p_memstat_state & P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL ? "F " : "NF"),
- (*p->p_name ? p->p_name : "unknown"));
+ b, p->p_pid,
+ (bytes / PAGE_SIZE_64), /* task's footprint converted from bytes to pages */
+ (bytes / (1024ULL * 1024ULL)), /* task's footprint converted from bytes to MB */
+ p->p_memstat_state, p->p_memstat_effectivepriority, p->p_memstat_requestedpriority, p->p_memstat_dirty, p->p_memstat_idledeadline,
+ ledger_limit,
+ p->p_memstat_memlimit,
+ (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"),
+ p->p_memstat_memlimit_active,
+ (p->p_memstat_state & P_MEMSTAT_MEMLIMIT_ACTIVE_FATAL ? "F " : "NF"),
+ p->p_memstat_memlimit_inactive,
+ (p->p_memstat_state & P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL ? "F " : "NF"),
+ (*p->p_name ? p->p_name : "unknown"));
p = memorystatus_get_next_proc_locked(&b, p, traverse_all_buckets);
- }
- printf("memorystatus_debug_dump ***END***\n");
+ }
+ printf("memorystatus_debug_dump ***END***\n");
}
static int
sysctl_memorystatus_debug_dump_bucket SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp, arg2)
- int bucket_index = 0;
- int error;
+ int bucket_index = 0;
+ int error;
error = SYSCTL_OUT(req, arg1, sizeof(int));
if (error || !req->newptr) {
- return (error);
+ return error;
+ }
+ error = SYSCTL_IN(req, &bucket_index, sizeof(int));
+ if (error || !req->newptr) {
+ return error;
}
- error = SYSCTL_IN(req, &bucket_index, sizeof(int));
- if (error || !req->newptr) {
- return (error);
- }
if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
/*
* All jetsam buckets will be dumped.
*/
- } else {
+ } else {
/*
* Only a single bucket will be dumped.
*/
memorystatus_debug_dump_bucket_locked(bucket_index);
proc_list_unlock();
memorystatus_debug_dump_this_bucket = bucket_index;
- return (error);
+ return error;
}
/*
* Debug aid to look at jetsam buckets and proc jetsam fields.
* Use this sysctl to act on a particular jetsam bucket.
* Writing the sysctl triggers the dump.
- * Usage: sysctl kern.memorystatus_debug_dump_this_bucket=<bucket_index>
+ * Usage: sysctl kern.memorystatus_debug_dump_this_bucket=<bucket_index>
*/
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_debug_dump_this_bucket, CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_debug_dump_this_bucket, 0, sysctl_memorystatus_debug_dump_bucket, "I", "");
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_debug_dump_this_bucket, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_debug_dump_this_bucket, 0, sysctl_memorystatus_debug_dump_bucket, "I", "");
/* Debug aid to aid determination of limit */
proc_t p;
unsigned int b = 0;
int error, enable = 0;
- boolean_t use_active; /* use the active limit and active limit attributes */
+ boolean_t use_active; /* use the active limit and active limit attributes */
boolean_t is_fatal;
error = SYSCTL_OUT(req, arg1, sizeof(int));
if (error || !req->newptr) {
- return (error);
+ return error;
}
error = SYSCTL_IN(req, &enable, sizeof(int));
if (error || !req->newptr) {
- return (error);
+ return error;
}
if (!(enable == 0 || enable == 1)) {
use_active = proc_jetsam_state_is_active_locked(p);
if (enable) {
-
if (use_active == TRUE) {
CACHE_ACTIVE_LIMITS_LOCKED(p, is_fatal);
} else {
CACHE_INACTIVE_LIMITS_LOCKED(p, is_fatal);
}
-
} else {
/*
* Disabling limits does not touch the stored variants.
p = memorystatus_get_next_proc_locked(&b, p, TRUE);
}
-
+
memorystatus_highwater_enabled = enable;
proc_list_unlock();
return 0;
-
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_highwater_enabled, CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_highwater_enabled, 0, sysctl_memorystatus_highwater_enable, "I", "");
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_highwater_enabled, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_highwater_enabled, 0, sysctl_memorystatus_highwater_enable, "I", "");
#if VM_PRESSURE_EVENTS
* This routine is used for targeted notifications regardless of system memory pressure
* and regardless of whether or not the process has already been notified.
* It bypasses and has no effect on the only-one-notification per soft-limit policy.
- *
+ *
* "memnote" is the current user.
*/
int error = 0, pid = 0;
struct knote *kn = NULL;
boolean_t found_knote = FALSE;
- int fflags = 0; /* filter flags for EVFILT_MEMORYSTATUS */
+ int fflags = 0; /* filter flags for EVFILT_MEMORYSTATUS */
uint64_t value = 0;
error = sysctl_handle_quad(oidp, &value, 0, req);
- if (error || !req->newptr)
- return (error);
+ if (error || !req->newptr) {
+ return error;
+ }
/*
* Find the pid in the low 32 bits of value passed in.
/*
* See event.h ... fflags for EVFILT_MEMORYSTATUS
*/
- if (!((fflags == NOTE_MEMORYSTATUS_PRESSURE_NORMAL)||
- (fflags == NOTE_MEMORYSTATUS_PRESSURE_WARN) ||
- (fflags == NOTE_MEMORYSTATUS_PRESSURE_CRITICAL) ||
- (fflags == NOTE_MEMORYSTATUS_LOW_SWAP) ||
- (fflags == NOTE_MEMORYSTATUS_PROC_LIMIT_WARN) ||
- (fflags == NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL) ||
- (((fflags & NOTE_MEMORYSTATUS_MSL_STATUS) != 0 &&
- ((fflags & ~NOTE_MEMORYSTATUS_MSL_STATUS) == 0))))) {
-
+ if (!((fflags == NOTE_MEMORYSTATUS_PRESSURE_NORMAL) ||
+ (fflags == NOTE_MEMORYSTATUS_PRESSURE_WARN) ||
+ (fflags == NOTE_MEMORYSTATUS_PRESSURE_CRITICAL) ||
+ (fflags == NOTE_MEMORYSTATUS_LOW_SWAP) ||
+ (fflags == NOTE_MEMORYSTATUS_PROC_LIMIT_WARN) ||
+ (fflags == NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL) ||
+ (((fflags & NOTE_MEMORYSTATUS_MSL_STATUS) != 0 &&
+ ((fflags & ~NOTE_MEMORYSTATUS_MSL_STATUS) == 0))))) {
printf("memorystatus_vm_pressure_send: notification [0x%x] not supported \n", fflags);
error = 1;
- return (error);
+ return error;
}
/*
memorystatus_klist_unlock();
- return (error);
+ return error;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_pressure_send, CTLTYPE_QUAD|CTLFLAG_WR|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_pressure_send, CTLTYPE_QUAD | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_memorystatus_vm_pressure_send, "Q", "");
#endif /* VM_PRESSURE_EVENTS */
-SYSCTL_INT(_kern, OID_AUTO, memorystatus_idle_snapshot, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_idle_snapshot, 0, "");
+SYSCTL_INT(_kern, OID_AUTO, memorystatus_idle_snapshot, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_idle_snapshot, 0, "");
#if CONFIG_JETSAM
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_critical, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_available_pages_critical, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_critical_base, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_available_pages_critical_base, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_critical_idle_offset, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_available_pages_critical_idle_offset, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_critical, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_available_pages_critical, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_critical_base, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_available_pages_critical_base, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_critical_idle_offset, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_available_pages_critical_idle_offset, 0, "");
SYSCTL_UINT(_kern, OID_AUTO, memorystatus_policy_more_free_offset_pages, CTLFLAG_RW, &memorystatus_policy_more_free_offset_pages, 0, "");
static unsigned int memorystatus_jetsam_panic_debug = 0;
/* Diagnostic code */
enum {
- kJetsamDiagnosticModeNone = 0,
+ kJetsamDiagnosticModeNone = 0,
kJetsamDiagnosticModeAll = 1,
kJetsamDiagnosticModeStopAtFirstActive = 2,
kJetsamDiagnosticModeCount
const char *diagnosticStrings[] = {
"jetsam: diagnostic mode: resetting critical level.",
"jetsam: diagnostic mode: will examine all processes",
- "jetsam: diagnostic mode: will stop at first active process"
+ "jetsam: diagnostic mode: will stop at first active process"
};
-
+
int error, val = jetsam_diagnostic_mode;
boolean_t changed = FALSE;
error = sysctl_handle_int(oidp, &val, 0, req);
- if (error || !req->newptr)
- return (error);
+ if (error || !req->newptr) {
+ return error;
+ }
if ((val < 0) || (val >= kJetsamDiagnosticModeCount)) {
printf("jetsam: diagnostic mode: invalid value - %d\n", val);
return EINVAL;
}
-
+
proc_list_lock();
-
+
if ((unsigned int) val != jetsam_diagnostic_mode) {
jetsam_diagnostic_mode = val;
memorystatus_jetsam_policy &= ~kPolicyDiagnoseActive;
-
+
switch (jetsam_diagnostic_mode) {
case kJetsamDiagnosticModeNone:
/* Already cleared */
/* Already validated */
break;
}
-
+
memorystatus_update_levels_locked(FALSE);
changed = TRUE;
}
-
+
proc_list_unlock();
-
+
if (changed) {
printf("%s\n", diagnosticStrings[val]);
}
-
- return (0);
+
+ return 0;
}
-SYSCTL_PROC(_debug, OID_AUTO, jetsam_diagnostic_mode, CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_LOCKED|CTLFLAG_ANYBODY,
- &jetsam_diagnostic_mode, 0, sysctl_jetsam_diagnostic_mode, "I", "Jetsam Diagnostic Mode");
+SYSCTL_PROC(_debug, OID_AUTO, jetsam_diagnostic_mode, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY,
+ &jetsam_diagnostic_mode, 0, sysctl_jetsam_diagnostic_mode, "I", "Jetsam Diagnostic Mode");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jetsam_policy_offset_pages_diagnostic, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_jetsam_policy_offset_pages_diagnostic, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_jetsam_policy_offset_pages_diagnostic, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_jetsam_policy_offset_pages_diagnostic, 0, "");
#if VM_PRESSURE_EVENTS
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_pressure, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_available_pages_pressure, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_available_pages_pressure, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_available_pages_pressure, 0, "");
#endif /* VM_PRESSURE_EVENTS */
#if CONFIG_FREEZE
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_jetsam_band, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_jetsam_band, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_daily_mb_max, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_daily_mb_max, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_degraded_mode, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_freeze_degradation, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_jetsam_band, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_jetsam_band, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_daily_mb_max, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_daily_mb_max, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_degraded_mode, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_freeze_degradation, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_threshold, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_threshold, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_threshold, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_pages_min, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_pages_min, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_pages_max, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_pages_max, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_pages_min, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_pages_min, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_pages_max, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_pages_max, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_refreeze_eligible_count, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_refreeze_eligible_count, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_processes_max, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_frozen_processes_max, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_refreeze_eligible_count, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_refreeze_eligible_count, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_processes_max, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_frozen_processes_max, 0, "");
/*
* Max. shared-anonymous memory in MB that can be held by frozen processes in the high jetsam band.
* Default is 10% of system-wide task limit.
*/
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_shared_mb_max, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_frozen_shared_mb_max, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_shared_mb, CTLFLAG_RD|CTLFLAG_LOCKED, &memorystatus_frozen_shared_mb, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_shared_mb_max, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_frozen_shared_mb_max, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_shared_mb, CTLFLAG_RD | CTLFLAG_LOCKED, &memorystatus_frozen_shared_mb, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_shared_mb_per_process_max, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_shared_mb_per_process_max, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_private_shared_pages_ratio, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_private_shared_pages_ratio, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_shared_mb_per_process_max, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_shared_mb_per_process_max, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_private_shared_pages_ratio, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_private_shared_pages_ratio, 0, "");
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_min_processes, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_suspended_threshold, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_min_processes, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_suspended_threshold, 0, "");
/*
* max. # of frozen process demotions we will allow in our daily cycle.
*/
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_max_freeze_demotions_daily, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_max_frozen_demotions_daily, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_max_freeze_demotions_daily, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_max_frozen_demotions_daily, 0, "");
/*
* min # of thaws needed by a process to protect it from getting demoted into the IDLE band.
*/
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_thaw_count_demotion_threshold, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_thaw_count_demotion_threshold, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_thaw_count_demotion_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_thaw_count_demotion_threshold, 0, "");
boolean_t memorystatus_freeze_throttle_enabled = TRUE;
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_throttle_enabled, CTLFLAG_RW|CTLFLAG_LOCKED, &memorystatus_freeze_throttle_enabled, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_throttle_enabled, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_throttle_enabled, 0, "");
-#define VM_PAGES_FOR_ALL_PROCS (2)
-/*
+/*
+ * When set to true, this keeps frozen processes in the compressor pool in memory, instead of swapping them out to disk.
+ * Exposed via the sysctl kern.memorystatus_freeze_to_memory.
+ */
+boolean_t memorystatus_freeze_to_memory = FALSE;
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_freeze_to_memory, CTLFLAG_RW | CTLFLAG_LOCKED, &memorystatus_freeze_to_memory, 0, "");
+
+#define VM_PAGES_FOR_ALL_PROCS (2)
+/*
* Manual trigger of freeze and thaw for dev / debug kernels only.
*/
static int
}
error = sysctl_handle_int(oidp, &pid, 0, req);
- if (error || !req->newptr)
- return (error);
+ if (error || !req->newptr) {
+ return error;
+ }
if (pid == VM_PAGES_FOR_ALL_PROCS) {
vm_pageout_anonymous_pages();
* Freezer backed by the compressor and swap file(s)
* will hold compressed data.
*
+ * Set the sysctl kern.memorystatus_freeze_to_memory to true to keep compressed data from
+ * being swapped out to disk. Note that this disables freezer swap support globally,
+ * not just for the process being frozen.
+ *
+ *
* We don't care about the global freezer budget or the process's (min/max) budget here.
* The freeze sysctl is meant to force-freeze a process.
*
* P_MEMSTAT_FROZEN bit, and elevate the process to a higher band (if the freezer is active).
*/
max_pages = memorystatus_freeze_pages_max;
-
} else {
/*
* We only have the compressor without any swap.
*/
if (state & (P_MEMSTAT_TERMINATED | P_MEMSTAT_LOCKED | P_MEMSTAT_FREEZE_DISABLED)) {
printf("sysctl_freeze: p_memstat_state check failed, process is%s%s%s\n",
- (state & P_MEMSTAT_TERMINATED) ? " terminated" : "",
- (state & P_MEMSTAT_LOCKED) ? " locked" : "",
- (state & P_MEMSTAT_FREEZE_DISABLED) ? " unfreezable" : "");
+ (state & P_MEMSTAT_TERMINATED) ? " terminated" : "",
+ (state & P_MEMSTAT_LOCKED) ? " locked" : "",
+ (state & P_MEMSTAT_FREEZE_DISABLED) ? " unfreezable" : "");
proc_rele(p);
lck_mtx_unlock(&freezer_mutex);
if (freezer_error_code == FREEZER_ERROR_NO_SWAP_SPACE) {
strlcpy(reason, "no swap space", 128);
}
-
+
printf("sysctl_freeze: task_freeze failed: %s\n", reason);
if (error == KERN_NO_SPACE) {
* We elevate only if we are going to swap out the data.
*/
error = memorystatus_update_inactive_jetsam_priority_band(pid, MEMORYSTATUS_CMD_ELEVATED_INACTIVEJETSAMPRIORITY_ENABLE,
- memorystatus_freeze_jetsam_band, TRUE);
+ memorystatus_freeze_jetsam_band, TRUE);
if (error) {
printf("sysctl_freeze: Elevating frozen process to higher jetsam band failed with %d\n", error);
return EINVAL;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_freeze, CTLTYPE_INT|CTLFLAG_WR|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_freeze, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_memorystatus_freeze, "I", "");
static int
}
error = sysctl_handle_int(oidp, &pid, 0, req);
- if (error || !req->newptr)
- return (error);
+ if (error || !req->newptr) {
+ return error;
+ }
if (pid == VM_PAGES_FOR_ALL_PROCS) {
do_fastwake_warmup_all();
return EINVAL;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_thaw, CTLTYPE_INT|CTLFLAG_WR|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_thaw, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_memorystatus_available_pages_thaw, "I", "");
-typedef struct _global_freezable_status{
+typedef struct _global_freezable_status {
boolean_t freeze_pages_threshold_crossed;
boolean_t freeze_eligible_procs_available;
boolean_t freeze_scheduled_in_future;
}global_freezable_status_t;
-typedef struct _proc_freezable_status{
- boolean_t freeze_has_memstat_state;
- boolean_t freeze_has_pages_min;
- int freeze_has_probability;
- boolean_t freeze_attempted;
- uint32_t p_memstat_state;
- uint32_t p_pages;
- int p_freeze_error_code;
- int p_pid;
- char p_name[MAXCOMLEN + 1];
+typedef struct _proc_freezable_status {
+ boolean_t freeze_has_memstat_state;
+ boolean_t freeze_has_pages_min;
+ int freeze_has_probability;
+ boolean_t freeze_attempted;
+ uint32_t p_memstat_state;
+ uint32_t p_pages;
+ int p_freeze_error_code;
+ int p_pid;
+ char p_name[MAXCOMLEN + 1];
}proc_freezable_status_t;
#define MAX_FREEZABLE_PROCESSES 100
static int
-memorystatus_freezer_get_status(user_addr_t buffer, size_t buffer_size, int32_t *retval)
+memorystatus_freezer_get_status(user_addr_t buffer, size_t buffer_size, int32_t *retval)
{
- uint32_t proc_count = 0, i = 0;
- global_freezable_status_t *list_head;
- proc_freezable_status_t *list_entry;
- size_t list_size = 0;
- proc_t p;
- memstat_bucket_t *bucket;
- uint32_t state = 0, pages = 0, entry_count = 0;
- boolean_t try_freeze = TRUE;
- int error = 0, probability_of_use = 0;
+ uint32_t proc_count = 0, i = 0;
+ global_freezable_status_t *list_head;
+ proc_freezable_status_t *list_entry;
+ size_t list_size = 0;
+ proc_t p;
+ memstat_bucket_t *bucket;
+ uint32_t state = 0, pages = 0, entry_count = 0;
+ boolean_t try_freeze = TRUE;
+ int error = 0, probability_of_use = 0;
if (VM_CONFIG_FREEZER_SWAP_IS_ACTIVE == FALSE) {
return EINVAL;
}
- list_head = (global_freezable_status_t*)kalloc(list_size);
+ list_head = (global_freezable_status_t*)kalloc(list_size);
if (list_head == NULL) {
return ENOMEM;
}
list_entry = (proc_freezable_status_t*) ((uintptr_t)list_head + sizeof(global_freezable_status_t));
bucket = &memstat_bucket[JETSAM_PRIORITY_IDLE];
-
+
entry_count = (memorystatus_global_probabilities_size / sizeof(memorystatus_internal_probabilities_t));
p = memorystatus_get_first_proc_locked(&i, FALSE);
proc_count++;
while ((proc_count <= MAX_FREEZABLE_PROCESSES) &&
- (p) &&
- (list_size < buffer_size)) {
-
+ (p) &&
+ (list_size < buffer_size)) {
if (isApp(p) == FALSE) {
p = memorystatus_get_next_proc_locked(&i, p, FALSE);
proc_count++;
strlcpy(list_entry->p_name, p->p_name, MAXCOMLEN + 1);
list_entry->p_pid = p->p_pid;
-
+
state = p->p_memstat_state;
if ((state & (P_MEMSTAT_TERMINATED | P_MEMSTAT_LOCKED | P_MEMSTAT_FREEZE_DISABLED | P_MEMSTAT_FREEZE_IGNORE)) ||
- !(state & P_MEMSTAT_SUSPENDED)) {
-
+ !(state & P_MEMSTAT_SUSPENDED)) {
try_freeze = list_entry->freeze_has_memstat_state = FALSE;
} else {
try_freeze = list_entry->freeze_has_memstat_state = TRUE;
}
list_entry->p_pages = pages;
-
+
if (entry_count) {
uint32_t j = 0;
- for (j = 0; j < entry_count; j++ ) {
+ for (j = 0; j < entry_count; j++) {
if (strncmp(memorystatus_global_probabilities_table[j].proc_name,
- p->p_name,
- MAXCOMLEN + 1) == 0) {
-
+ p->p_name,
+ MAXCOMLEN + 1) == 0) {
probability_of_use = memorystatus_global_probabilities_table[j].use_probability;
break;
}
}
if (try_freeze) {
-
uint32_t purgeable, wired, clean, dirty, shared;
uint32_t max_pages = 0;
int freezer_error_code = 0;
list_entry++;
list_size += sizeof(proc_freezable_status_t);
-
+
p = memorystatus_get_next_proc_locked(&i, p, FALSE);
proc_count++;
}
-
+
proc_list_unlock();
buffer_size = list_size;
kfree(list_head, list_size);
MEMORYSTATUS_DEBUG(1, "memorystatus_freezer_get_status: returning %d (%lu - size)\n", error, (unsigned long)*list_size);
-
+
return error;
}
#endif /* DEVELOPMENT || DEBUG */
extern kern_return_t kernel_thread_start_priority(thread_continue_t continuation,
- void *parameter,
- integer_t priority,
- thread_t *new_thread);
+ void *parameter,
+ integer_t priority,
+ thread_t *new_thread);
#if DEVELOPMENT || DEBUG
sysctl_memorystatus_disconnect_page_mappings SYSCTL_HANDLER_ARGS
{
#pragma unused(arg1, arg2)
- int error = 0, pid = 0;
- proc_t p;
+ int error = 0, pid = 0;
+ proc_t p;
error = sysctl_handle_int(oidp, &pid, 0, req);
- if (error || !req->newptr)
- return (error);
+ if (error || !req->newptr) {
+ return error;
+ }
lck_mtx_lock(&disconnect_page_mappings_mutex);
proc_rele(p);
- if (error)
+ if (error) {
error = EIO;
- } else
+ }
+ } else {
error = EINVAL;
+ }
}
lck_mtx_unlock(&disconnect_page_mappings_mutex);
return error;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_disconnect_page_mappings, CTLTYPE_INT|CTLFLAG_WR|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_disconnect_page_mappings, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_memorystatus_disconnect_page_mappings, "I", "");
#endif /* DEVELOPMENT || DEBUG */
* Currently sort_order is only meaningful when handling
* coalitions.
*
- * Return:
+ * Return:
* 0 on success
- * non-0 on failure
+ * non-0 on failure
*/
-static int memorystatus_sort_bucket(unsigned int bucket_index, int sort_order)
+static int
+memorystatus_sort_bucket(unsigned int bucket_index, int sort_order)
{
int coal_sort_order;
/*
* Verify the jetsam priority
*/
- if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
- return(EINVAL);
- }
+ if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
+ return EINVAL;
+ }
#if DEVELOPMENT || DEBUG
- if (sort_order == JETSAM_SORT_DEFAULT) {
+ if (sort_order == JETSAM_SORT_DEFAULT) {
coal_sort_order = COALITION_SORT_DEFAULT;
} else {
- coal_sort_order = sort_order; /* only used for testing scenarios */
+ coal_sort_order = sort_order; /* only used for testing scenarios */
}
#else
/* Verify default */
- if (sort_order == JETSAM_SORT_DEFAULT) {
+ if (sort_order == JETSAM_SORT_DEFAULT) {
coal_sort_order = COALITION_SORT_DEFAULT;
} else {
- return(EINVAL);
+ return EINVAL;
}
#endif
proc_list_lock();
-
+
if (memstat_bucket[bucket_index].count == 0) {
proc_list_unlock();
- return (0);
+ return 0;
}
switch (bucket_index) {
break;
}
proc_list_unlock();
-
- return(0);
+
+ return 0;
}
/*
* Sort processes by size for a single jetsam bucket.
*/
-static void memorystatus_sort_by_largest_process_locked(unsigned int bucket_index)
+static void
+memorystatus_sort_by_largest_process_locked(unsigned int bucket_index)
{
proc_t p = NULL, insert_after_proc = NULL, max_proc = NULL;
proc_t next_p = NULL, prev_max_proc = NULL;
uint32_t pages = 0, max_pages = 0;
memstat_bucket_t *current_bucket;
-
+
if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
return;
}
-
+
current_bucket = &memstat_bucket[bucket_index];
p = TAILQ_FIRST(¤t_bucket->list);
max_pages = pages;
max_proc = p;
prev_max_proc = p;
-
+
while ((next_p = TAILQ_NEXT(p, p_memstat_list)) != NULL) {
/* traversing list until we find next largest process */
- p=next_p;
+ p = next_p;
memorystatus_get_task_page_counts(p->task, &pages, NULL, NULL);
if (pages > max_pages) {
max_pages = pages;
}
}
-static proc_t memorystatus_get_first_proc_locked(unsigned int *bucket_index, boolean_t search) {
+static proc_t
+memorystatus_get_first_proc_locked(unsigned int *bucket_index, boolean_t search)
+{
memstat_bucket_t *current_bucket;
proc_t next_p;
next_p = TAILQ_FIRST(¤t_bucket->list);
}
}
-
+
return next_p;
}
-static proc_t memorystatus_get_next_proc_locked(unsigned int *bucket_index, proc_t p, boolean_t search) {
+static proc_t
+memorystatus_get_next_proc_locked(unsigned int *bucket_index, proc_t p, boolean_t search)
+{
memstat_bucket_t *current_bucket;
proc_t next_p;
-
+
if (!p || ((*bucket_index) >= MEMSTAT_BUCKET_COUNT)) {
return NULL;
}
* unless parallel jetsam is enabled.
*/
struct jetsam_thread_state {
- boolean_t inited; /* if the thread is initialized */
- int memorystatus_wakeup; /* wake channel */
- int index; /* jetsam thread index */
- thread_t thread; /* jetsam thread pointer */
+ boolean_t inited; /* if the thread is initialized */
+ int memorystatus_wakeup; /* wake channel */
+ int index; /* jetsam thread index */
+ thread_t thread; /* jetsam thread pointer */
} *jetsam_threads;
/* Maximum number of jetsam threads allowed */
jetsam_current_thread(void)
{
for (int thr_id = 0; thr_id < max_jetsam_threads; thr_id++) {
- if (jetsam_threads[thr_id].thread == current_thread())
+ if (jetsam_threads[thr_id].thread == current_thread()) {
return &(jetsam_threads[thr_id]);
+ }
}
panic("jetsam_current_thread() is being called from a non-jetsam thread\n");
/* Contol should not reach here */
if (kill_on_no_paging_space == TRUE) {
max_kill_priority = JETSAM_PRIORITY_MAX;
}
-#endif
+#endif
+
-
/* Init buckets */
for (i = 0; i < MEMSTAT_BUCKET_COUNT; i++) {
TAILQ_INIT(&memstat_bucket[i].list);
#if CONFIG_JETSAM
nanoseconds_to_absolutetime((uint64_t)DEFERRED_IDLE_EXIT_TIME_SECS * NSEC_PER_SEC, &memorystatus_sysprocs_idle_delay_time);
nanoseconds_to_absolutetime((uint64_t)DEFERRED_IDLE_EXIT_TIME_SECS * NSEC_PER_SEC, &memorystatus_apps_idle_delay_time);
-
+
/* Apply overrides */
PE_get_default("kern.jetsam_delta", &delta_percentage, sizeof(delta_percentage));
if (delta_percentage == 0) {
assert(pressure_threshold_percentage < 100);
PE_get_default("kern.jetsam_freeze_threshold", &freeze_threshold_percentage, sizeof(freeze_threshold_percentage));
assert(freeze_threshold_percentage < 100);
-
- if (!PE_parse_boot_argn("jetsam_aging_policy", &jetsam_aging_policy,
- sizeof (jetsam_aging_policy))) {
+ if (!PE_parse_boot_argn("jetsam_aging_policy", &jetsam_aging_policy,
+ sizeof(jetsam_aging_policy))) {
if (!PE_get_default("kern.jetsam_aging_policy", &jetsam_aging_policy,
- sizeof(jetsam_aging_policy))) {
-
+ sizeof(jetsam_aging_policy))) {
jetsam_aging_policy = kJetsamAgingPolicyLegacy;
}
}
}
switch (jetsam_aging_policy) {
+ case kJetsamAgingPolicyNone:
+ system_procs_aging_band = JETSAM_PRIORITY_IDLE;
+ applications_aging_band = JETSAM_PRIORITY_IDLE;
+ break;
- case kJetsamAgingPolicyNone:
- system_procs_aging_band = JETSAM_PRIORITY_IDLE;
- applications_aging_band = JETSAM_PRIORITY_IDLE;
- break;
-
- case kJetsamAgingPolicyLegacy:
- /*
- * Legacy behavior where some daemons get a 10s protection once
- * AND only before the first clean->dirty->clean transition before
- * going into IDLE band.
- */
- system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
- applications_aging_band = JETSAM_PRIORITY_IDLE;
- break;
+ case kJetsamAgingPolicyLegacy:
+ /*
+ * Legacy behavior where some daemons get a 10s protection once
+ * AND only before the first clean->dirty->clean transition before
+ * going into IDLE band.
+ */
+ system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
+ applications_aging_band = JETSAM_PRIORITY_IDLE;
+ break;
- case kJetsamAgingPolicySysProcsReclaimedFirst:
- system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
- applications_aging_band = JETSAM_PRIORITY_AGING_BAND2;
- break;
+ case kJetsamAgingPolicySysProcsReclaimedFirst:
+ system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND1;
+ applications_aging_band = JETSAM_PRIORITY_AGING_BAND2;
+ break;
- case kJetsamAgingPolicyAppsReclaimedFirst:
- system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND2;
- applications_aging_band = JETSAM_PRIORITY_AGING_BAND1;
- break;
+ case kJetsamAgingPolicyAppsReclaimedFirst:
+ system_procs_aging_band = JETSAM_PRIORITY_AGING_BAND2;
+ applications_aging_band = JETSAM_PRIORITY_AGING_BAND1;
+ break;
- default:
- break;
+ default:
+ break;
}
/*
assert(JETSAM_PRIORITY_ELEVATED_INACTIVE > applications_aging_band);
/* Take snapshots for idle-exit kills by default? First check the boot-arg... */
- if (!PE_parse_boot_argn("jetsam_idle_snapshot", &memorystatus_idle_snapshot, sizeof (memorystatus_idle_snapshot))) {
- /* ...no boot-arg, so check the device tree */
- PE_get_default("kern.jetsam_idle_snapshot", &memorystatus_idle_snapshot, sizeof(memorystatus_idle_snapshot));
+ if (!PE_parse_boot_argn("jetsam_idle_snapshot", &memorystatus_idle_snapshot, sizeof(memorystatus_idle_snapshot))) {
+ /* ...no boot-arg, so check the device tree */
+ PE_get_default("kern.jetsam_idle_snapshot", &memorystatus_idle_snapshot, sizeof(memorystatus_idle_snapshot));
}
memorystatus_delta = delta_percentage * atop_64(max_mem) / 100;
memorystatus_available_pages_critical_idle_offset = idle_offset_percentage * atop_64(max_mem) / 100;
memorystatus_available_pages_critical_base = (critical_threshold_percentage / delta_percentage) * memorystatus_delta;
memorystatus_policy_more_free_offset_pages = (policy_more_free_offset_percentage / delta_percentage) * memorystatus_delta;
-
+
/* Jetsam Loop Detection */
if (max_mem <= (512 * 1024 * 1024)) {
/* 512 MB devices */
- memorystatus_jld_eval_period_msecs = 8000; /* 8000 msecs == 8 second window */
+ memorystatus_jld_eval_period_msecs = 8000; /* 8000 msecs == 8 second window */
} else {
/* 1GB and larger devices */
- memorystatus_jld_eval_period_msecs = 6000; /* 6000 msecs == 6 second window */
+ memorystatus_jld_eval_period_msecs = 6000; /* 6000 msecs == 6 second window */
}
memorystatus_jld_enabled = TRUE;
memorystatus_jetsam_snapshot_max = maxproc;
memorystatus_jetsam_snapshot_size = sizeof(memorystatus_jetsam_snapshot_t) +
- (sizeof(memorystatus_jetsam_snapshot_entry_t) * memorystatus_jetsam_snapshot_max);
+ (sizeof(memorystatus_jetsam_snapshot_entry_t) * memorystatus_jetsam_snapshot_max);
- memorystatus_jetsam_snapshot =
- (memorystatus_jetsam_snapshot_t*)kalloc(memorystatus_jetsam_snapshot_size);
+ memorystatus_jetsam_snapshot =
+ (memorystatus_jetsam_snapshot_t*)kalloc(memorystatus_jetsam_snapshot_size);
if (!memorystatus_jetsam_snapshot) {
panic("Could not allocate memorystatus_jetsam_snapshot");
}
memorystatus_jetsam_snapshot_copy =
- (memorystatus_jetsam_snapshot_t*)kalloc(memorystatus_jetsam_snapshot_size);
+ (memorystatus_jetsam_snapshot_t*)kalloc(memorystatus_jetsam_snapshot_size);
if (!memorystatus_jetsam_snapshot_copy) {
panic("Could not allocate memorystatus_jetsam_snapshot_copy");
}
#if CONFIG_FREEZE
memorystatus_freeze_threshold = (freeze_threshold_percentage / delta_percentage) * memorystatus_delta;
#endif
-
+
/* Check the boot-arg to see if fast jetsam is allowed */
- if (!PE_parse_boot_argn("fast_jetsam_enabled", &fast_jetsam_enabled, sizeof (fast_jetsam_enabled))) {
+ if (!PE_parse_boot_argn("fast_jetsam_enabled", &fast_jetsam_enabled, sizeof(fast_jetsam_enabled))) {
fast_jetsam_enabled = 0;
}
/* Check the boot-arg to configure the maximum number of jetsam threads */
- if (!PE_parse_boot_argn("max_jetsam_threads", &max_jetsam_threads, sizeof (max_jetsam_threads))) {
+ if (!PE_parse_boot_argn("max_jetsam_threads", &max_jetsam_threads, sizeof(max_jetsam_threads))) {
max_jetsam_threads = JETSAM_THREADS_LIMIT;
}
/* Restrict the maximum number of jetsam threads to JETSAM_THREADS_LIMIT */
if (max_jetsam_threads > JETSAM_THREADS_LIMIT) {
max_jetsam_threads = JETSAM_THREADS_LIMIT;
- }
+ }
/* For low CPU systems disable fast jetsam mechanism */
if (vm_pageout_state.vm_restricted_to_single_processor == TRUE) {
/* Initialize all the jetsam threads */
for (i = 0; i < max_jetsam_threads; i++) {
-
result = kernel_thread_start_priority(memorystatus_thread, NULL, 95 /* MAXPRI_KERNEL */, &jetsam_threads[i].thread);
if (result == KERN_SUCCESS) {
jetsam_threads[i].inited = FALSE;
/*
* The jetsam no frills kill call
- * Return: 0 on success
+ * Return: 0 on success
* error code on failure (EINVAL...)
*/
static int
-jetsam_do_kill(proc_t p, int jetsam_flags, os_reason_t jetsam_reason) {
+jetsam_do_kill(proc_t p, int jetsam_flags, os_reason_t jetsam_reason)
+{
int error = 0;
error = exit_with_reason(p, W_EXITCODE(0, SIGKILL), (int *)NULL, FALSE, FALSE, jetsam_flags, jetsam_reason);
- return(error);
+ return error;
}
/*
* Wrapper for processes exiting with memorystatus details
*/
static boolean_t
-memorystatus_do_kill(proc_t p, uint32_t cause, os_reason_t jetsam_reason) {
-
+memorystatus_do_kill(proc_t p, uint32_t cause, os_reason_t jetsam_reason)
+{
int error = 0;
__unused pid_t victim_pid = p->p_pid;
- KERNEL_DEBUG_CONSTANT( (BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_DO_KILL)) | DBG_FUNC_START,
- victim_pid, cause, vm_page_free_count, 0, 0);
+ KERNEL_DEBUG_CONSTANT((BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_DO_KILL)) | DBG_FUNC_START,
+ victim_pid, cause, vm_page_free_count, 0, 0);
DTRACE_MEMORYSTATUS3(memorystatus_do_kill, proc_t, p, os_reason_t, jetsam_reason, uint32_t, cause);
#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
if (p->p_memstat_effectivepriority >= JETSAM_PRIORITY_FOREGROUND) {
printf("memorystatus: killing process %d [%s] in high band %s (%d) - memorystatus_available_pages: %llu\n", p->p_pid,
- (*p->p_name ? p->p_name : "unknown"),
- memorystatus_priority_band_name(p->p_memstat_effectivepriority), p->p_memstat_effectivepriority,
- (uint64_t)memorystatus_available_pages);
+ (*p->p_name ? p->p_name : "unknown"),
+ memorystatus_priority_band_name(p->p_memstat_effectivepriority), p->p_memstat_effectivepriority,
+ (uint64_t)memorystatus_available_pages);
}
/*
*/
int jetsam_flags = P_LTERM_JETSAM;
switch (cause) {
- case kMemorystatusKilledHiwat: jetsam_flags |= P_JETSAM_HIWAT; break;
- case kMemorystatusKilledVnodes: jetsam_flags |= P_JETSAM_VNODE; break;
- case kMemorystatusKilledVMPageShortage: jetsam_flags |= P_JETSAM_VMPAGESHORTAGE; break;
- case kMemorystatusKilledVMCompressorThrashing:
- case kMemorystatusKilledVMCompressorSpaceShortage: jetsam_flags |= P_JETSAM_VMTHRASHING; break;
- case kMemorystatusKilledFCThrashing: jetsam_flags |= P_JETSAM_FCTHRASHING; break;
- case kMemorystatusKilledPerProcessLimit: jetsam_flags |= P_JETSAM_PID; break;
- case kMemorystatusKilledIdleExit: jetsam_flags |= P_JETSAM_IDLEEXIT; break;
+ case kMemorystatusKilledHiwat: jetsam_flags |= P_JETSAM_HIWAT; break;
+ case kMemorystatusKilledVnodes: jetsam_flags |= P_JETSAM_VNODE; break;
+ case kMemorystatusKilledVMPageShortage: jetsam_flags |= P_JETSAM_VMPAGESHORTAGE; break;
+ case kMemorystatusKilledVMCompressorThrashing:
+ case kMemorystatusKilledVMCompressorSpaceShortage: jetsam_flags |= P_JETSAM_VMTHRASHING; break;
+ case kMemorystatusKilledFCThrashing: jetsam_flags |= P_JETSAM_FCTHRASHING; break;
+ case kMemorystatusKilledPerProcessLimit: jetsam_flags |= P_JETSAM_PID; break;
+ case kMemorystatusKilledIdleExit: jetsam_flags |= P_JETSAM_IDLEEXIT; break;
}
error = jetsam_do_kill(p, jetsam_flags, jetsam_reason);
- KERNEL_DEBUG_CONSTANT( (BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_DO_KILL)) | DBG_FUNC_END,
- victim_pid, cause, vm_page_free_count, error, 0);
+ KERNEL_DEBUG_CONSTANT((BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_DO_KILL)) | DBG_FUNC_END,
+ victim_pid, cause, vm_page_free_count, error, 0);
vm_run_compactor();
- return (error == 0);
+ return error == 0;
}
/*
*/
static void
-memorystatus_check_levels_locked(void) {
+memorystatus_check_levels_locked(void)
+{
#if CONFIG_JETSAM
/* Update levels */
memorystatus_update_levels_locked(TRUE);
#endif /* CONFIG_JETSAM */
}
-/*
+/*
* Pin a process to a particular jetsam band when it is in the background i.e. not doing active work.
* For an application: that means no longer in the FG band
* For a daemon: that means no longer in its 'requested' jetsam priority band
int
memorystatus_update_inactive_jetsam_priority_band(pid_t pid, uint32_t op_flags, int jetsam_prio, boolean_t effective_now)
{
- int error = 0;
+ int error = 0;
boolean_t enable = FALSE;
- proc_t p = NULL;
+ proc_t p = NULL;
if (op_flags == MEMORYSTATUS_CMD_ELEVATED_INACTIVEJETSAMPRIORITY_ENABLE) {
enable = TRUE;
p = proc_find(pid);
if (p != NULL) {
-
if ((enable && ((p->p_memstat_state & P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND) == P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND)) ||
(!enable && ((p->p_memstat_state & P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND) == 0))) {
/*
* No change in state.
*/
-
} else {
-
proc_list_lock();
if (enable) {
if (effective_now) {
if (p->p_memstat_effectivepriority < jetsam_prio) {
- if(memorystatus_highwater_enabled) {
+ if (memorystatus_highwater_enabled) {
/*
* Process is about to transition from
* inactive --> active
}
}
} else {
-
p->p_memstat_state &= ~P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND;
memorystatus_invalidate_idle_demotion_locked(p, TRUE);
}
proc_rele(p);
error = 0;
-
} else {
error = ESRCH;
}
}
static void
-memorystatus_perform_idle_demotion(__unused void *spare1, __unused void *spare2)
+memorystatus_perform_idle_demotion(__unused void *spare1, __unused void *spare2)
{
proc_t p;
uint64_t current_time = 0, idle_delay_time = 0;
int demote_prio_band = 0;
memstat_bucket_t *demotion_bucket;
-
+
MEMORYSTATUS_DEBUG(1, "memorystatus_perform_idle_demotion()\n");
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_IDLE_DEMOTE) | DBG_FUNC_START, 0, 0, 0, 0, 0);
-
- current_time = mach_absolute_time();
-
+
+ current_time = mach_absolute_time();
+
proc_list_lock();
demote_prio_band = JETSAM_PRIORITY_IDLE + 1;
for (; demote_prio_band < JETSAM_PRIORITY_MAX; demote_prio_band++) {
-
- if (demote_prio_band != system_procs_aging_band && demote_prio_band != applications_aging_band)
+ if (demote_prio_band != system_procs_aging_band && demote_prio_band != applications_aging_band) {
continue;
+ }
demotion_bucket = &memstat_bucket[demote_prio_band];
p = TAILQ_FIRST(&demotion_bucket->list);
-
+
while (p) {
MEMORYSTATUS_DEBUG(1, "memorystatus_perform_idle_demotion() found %d\n", p->p_pid);
-
+
assert(p->p_memstat_idledeadline);
assert(p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS);
if (current_time >= p->p_memstat_idledeadline) {
-
if ((isSysProc(p) &&
- ((p->p_memstat_dirty & (P_DIRTY_IDLE_EXIT_ENABLED|P_DIRTY_IS_DIRTY)) != P_DIRTY_IDLE_EXIT_ENABLED)) || /* system proc marked dirty*/
- task_has_assertions((struct task *)(p->task))) { /* has outstanding assertions which might indicate outstanding work too */
+ ((p->p_memstat_dirty & (P_DIRTY_IDLE_EXIT_ENABLED | P_DIRTY_IS_DIRTY)) != P_DIRTY_IDLE_EXIT_ENABLED)) || /* system proc marked dirty*/
+ task_has_assertions((struct task *)(p->task))) { /* has outstanding assertions which might indicate outstanding work too */
idle_delay_time = (isSysProc(p)) ? memorystatus_sysprocs_idle_delay_time : memorystatus_apps_idle_delay_time;
p->p_memstat_idledeadline += idle_delay_time;
p = TAILQ_NEXT(p, p_memstat_list);
-
} else {
-
proc_t next_proc = NULL;
next_proc = TAILQ_NEXT(p, p_memstat_list);
memorystatus_invalidate_idle_demotion_locked(p, TRUE);
memorystatus_update_priority_locked(p, JETSAM_PRIORITY_IDLE, false, true);
-
+
p = next_proc;
continue;
-
}
} else {
// No further candidates
break;
}
}
-
}
memorystatus_reschedule_idle_demotion_locked();
-
+
proc_list_unlock();
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_IDLE_DEMOTE) | DBG_FUNC_END, 0, 0, 0, 0, 0);
}
static void
-memorystatus_schedule_idle_demotion_locked(proc_t p, boolean_t set_state)
-{
+memorystatus_schedule_idle_demotion_locked(proc_t p, boolean_t set_state)
+{
boolean_t present_in_sysprocs_aging_bucket = FALSE;
boolean_t present_in_apps_aging_bucket = FALSE;
uint64_t idle_delay_time = 0;
return;
}
- if (isProcessInAgingBands(p)){
-
+ if (isProcessInAgingBands(p)) {
if (jetsam_aging_policy != kJetsamAgingPolicyLegacy) {
assert((p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS) != P_DIRTY_AGING_IN_PROGRESS);
}
if (isSysProc(p) && system_procs_aging_band) {
present_in_sysprocs_aging_bucket = TRUE;
-
} else if (isApp(p) && applications_aging_band) {
present_in_apps_aging_bucket = TRUE;
}
assert(!present_in_sysprocs_aging_bucket);
assert(!present_in_apps_aging_bucket);
- MEMORYSTATUS_DEBUG(1, "memorystatus_schedule_idle_demotion_locked: scheduling demotion to idle band for pid %d (dirty:0x%x, set_state %d, demotions %d).\n",
+ MEMORYSTATUS_DEBUG(1, "memorystatus_schedule_idle_demotion_locked: scheduling demotion to idle band for pid %d (dirty:0x%x, set_state %d, demotions %d).\n",
p->p_pid, p->p_memstat_dirty, set_state, (memorystatus_scheduled_idle_demotions_sysprocs + memorystatus_scheduled_idle_demotions_apps));
- if(isSysProc(p)) {
+ if (isSysProc(p)) {
assert((p->p_memstat_dirty & P_DIRTY_IDLE_EXIT_ENABLED) == P_DIRTY_IDLE_EXIT_ENABLED);
}
p->p_memstat_dirty |= P_DIRTY_AGING_IN_PROGRESS;
p->p_memstat_idledeadline = mach_absolute_time() + idle_delay_time;
}
-
+
assert(p->p_memstat_idledeadline);
-
- if (isSysProc(p) && present_in_sysprocs_aging_bucket == FALSE) {
- memorystatus_scheduled_idle_demotions_sysprocs++;
+ if (isSysProc(p) && present_in_sysprocs_aging_bucket == FALSE) {
+ memorystatus_scheduled_idle_demotions_sysprocs++;
} else if (isApp(p) && present_in_apps_aging_bucket == FALSE) {
memorystatus_scheduled_idle_demotions_apps++;
}
}
static void
-memorystatus_invalidate_idle_demotion_locked(proc_t p, boolean_t clear_state)
+memorystatus_invalidate_idle_demotion_locked(proc_t p, boolean_t clear_state)
{
boolean_t present_in_sysprocs_aging_bucket = FALSE;
boolean_t present_in_apps_aging_bucket = FALSE;
}
if (isProcessInAgingBands(p)) {
-
if (jetsam_aging_policy != kJetsamAgingPolicyLegacy) {
assert((p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS) == P_DIRTY_AGING_IN_PROGRESS);
}
assert(p->p_memstat_effectivepriority == system_procs_aging_band);
assert(p->p_memstat_idledeadline);
present_in_sysprocs_aging_bucket = TRUE;
-
} else if (isApp(p) && applications_aging_band) {
assert(p->p_memstat_effectivepriority == applications_aging_band);
assert(p->p_memstat_idledeadline);
}
}
- MEMORYSTATUS_DEBUG(1, "memorystatus_invalidate_idle_demotion(): invalidating demotion to idle band for pid %d (clear_state %d, demotions %d).\n",
+ MEMORYSTATUS_DEBUG(1, "memorystatus_invalidate_idle_demotion(): invalidating demotion to idle band for pid %d (clear_state %d, demotions %d).\n",
p->p_pid, clear_state, (memorystatus_scheduled_idle_demotions_sysprocs + memorystatus_scheduled_idle_demotions_apps));
-
-
+
+
if (clear_state) {
- p->p_memstat_idledeadline = 0;
- p->p_memstat_dirty &= ~P_DIRTY_AGING_IN_PROGRESS;
+ p->p_memstat_idledeadline = 0;
+ p->p_memstat_dirty &= ~P_DIRTY_AGING_IN_PROGRESS;
}
-
- if (isSysProc(p) &&present_in_sysprocs_aging_bucket == TRUE) {
+
+ if (isSysProc(p) && present_in_sysprocs_aging_bucket == TRUE) {
memorystatus_scheduled_idle_demotions_sysprocs--;
assert(memorystatus_scheduled_idle_demotions_sysprocs >= 0);
-
} else if (isApp(p) && present_in_apps_aging_bucket == TRUE) {
memorystatus_scheduled_idle_demotions_apps--;
assert(memorystatus_scheduled_idle_demotions_apps >= 0);
}
- assert((memorystatus_scheduled_idle_demotions_sysprocs + memorystatus_scheduled_idle_demotions_apps) >= 0);
+ assert((memorystatus_scheduled_idle_demotions_sysprocs + memorystatus_scheduled_idle_demotions_apps) >= 0);
}
static void
-memorystatus_reschedule_idle_demotion_locked(void) {
- if (0 == (memorystatus_scheduled_idle_demotions_sysprocs + memorystatus_scheduled_idle_demotions_apps)) {
- if (memstat_idle_demotion_deadline) {
- /* Transitioned 1->0, so cancel next call */
- thread_call_cancel(memorystatus_idle_demotion_call);
- memstat_idle_demotion_deadline = 0;
- }
- } else {
- memstat_bucket_t *demotion_bucket;
- proc_t p = NULL, p1 = NULL, p2 = NULL;
-
- if (system_procs_aging_band) {
-
+memorystatus_reschedule_idle_demotion_locked(void)
+{
+ if (0 == (memorystatus_scheduled_idle_demotions_sysprocs + memorystatus_scheduled_idle_demotions_apps)) {
+ if (memstat_idle_demotion_deadline) {
+ /* Transitioned 1->0, so cancel next call */
+ thread_call_cancel(memorystatus_idle_demotion_call);
+ memstat_idle_demotion_deadline = 0;
+ }
+ } else {
+ memstat_bucket_t *demotion_bucket;
+ proc_t p = NULL, p1 = NULL, p2 = NULL;
+
+ if (system_procs_aging_band) {
demotion_bucket = &memstat_bucket[system_procs_aging_band];
p1 = TAILQ_FIRST(&demotion_bucket->list);
p = p1;
}
- if (applications_aging_band) {
-
+ if (applications_aging_band) {
demotion_bucket = &memstat_bucket[applications_aging_band];
p2 = TAILQ_FIRST(&demotion_bucket->list);
} else {
p = (p1 == NULL) ? p2 : p1;
}
-
}
assert(p);
if (p != NULL) {
assert(p && p->p_memstat_idledeadline);
- if (memstat_idle_demotion_deadline != p->p_memstat_idledeadline){
+ if (memstat_idle_demotion_deadline != p->p_memstat_idledeadline) {
thread_call_enter_delayed(memorystatus_idle_demotion_call, p->p_memstat_idledeadline);
memstat_idle_demotion_deadline = p->p_memstat_idledeadline;
}
}
- }
+ }
}
-/*
+/*
* List manipulation
*/
-
-int
+
+int
memorystatus_add(proc_t p, boolean_t locked)
{
memstat_bucket_t *bucket;
-
+
MEMORYSTATUS_DEBUG(1, "memorystatus_list_add(): adding pid %d with priority %d.\n", p->p_pid, p->p_memstat_effectivepriority);
if (!locked) {
- proc_list_lock();
- }
+ proc_list_lock();
+ }
DTRACE_MEMORYSTATUS2(memorystatus_add, proc_t, p, int32_t, p->p_memstat_effectivepriority);
/* Processes marked internal do not have priority tracked */
if (p->p_memstat_state & P_MEMSTAT_INTERNAL) {
- goto exit;
+ goto exit;
}
-
+
bucket = &memstat_bucket[p->p_memstat_effectivepriority];
-
+
if (isSysProc(p) && system_procs_aging_band && (p->p_memstat_effectivepriority == system_procs_aging_band)) {
assert(bucket->count == memorystatus_scheduled_idle_demotions_sysprocs - 1);
-
} else if (isApp(p) && applications_aging_band && (p->p_memstat_effectivepriority == applications_aging_band)) {
assert(bucket->count == memorystatus_scheduled_idle_demotions_apps - 1);
-
} else if (p->p_memstat_effectivepriority == JETSAM_PRIORITY_IDLE) {
/*
* Entering the idle band.
memorystatus_list_count++;
memorystatus_check_levels_locked();
-
+
exit:
- if (!locked) {
- proc_list_unlock();
- }
-
+ if (!locked) {
+ proc_list_unlock();
+ }
+
return 0;
}
memorystatus_update_priority_locked(proc_t p, int priority, boolean_t head_insert, boolean_t skip_demotion_check)
{
memstat_bucket_t *old_bucket, *new_bucket;
-
+
assert(priority < MEMSTAT_BUCKET_COUNT);
-
+
/* Ensure that exit isn't underway, leaving the proc retained but removed from its bucket */
if ((p->p_listflag & P_LIST_EXITED) != 0) {
return;
}
MEMORYSTATUS_DEBUG(1, "memorystatus_update_priority_locked(): setting %s(%d) to priority %d, inserting at %s\n",
- (*p->p_name ? p->p_name : "unknown"), p->p_pid, priority, head_insert ? "head" : "tail");
+ (*p->p_name ? p->p_name : "unknown"), p->p_pid, priority, head_insert ? "head" : "tail");
DTRACE_MEMORYSTATUS3(memorystatus_update_priority, proc_t, p, int32_t, p->p_memstat_effectivepriority, int, priority);
#if DEVELOPMENT || DEBUG
if (priority == JETSAM_PRIORITY_IDLE && /* if the process is on its way into the IDLE band */
- skip_demotion_check == FALSE && /* and it isn't via the path that will set the INACTIVE memlimits */
+ skip_demotion_check == FALSE && /* and it isn't via the path that will set the INACTIVE memlimits */
(p->p_memstat_dirty & P_DIRTY_TRACK) && /* and it has 'DIRTY' tracking enabled */
((p->p_memstat_memlimit != p->p_memstat_memlimit_inactive) || /* and we notice that the current limit isn't the right value (inactive) */
- ((p->p_memstat_state & P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL) ? ( ! (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT)) : (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT)))) /* OR type (fatal vs non-fatal) */
+ ((p->p_memstat_state & P_MEMSTAT_MEMLIMIT_INACTIVE_FATAL) ? (!(p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT)) : (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT)))) { /* OR type (fatal vs non-fatal) */
panic("memorystatus_update_priority_locked: on %s with 0x%x, prio: %d and %d\n", p->p_name, p->p_memstat_state, priority, p->p_memstat_memlimit); /* then we must catch this */
+ }
#endif /* DEVELOPMENT || DEBUG */
old_bucket = &memstat_bucket[p->p_memstat_effectivepriority];
if (skip_demotion_check == FALSE) {
-
if (isSysProc(p)) {
/*
* For system processes, the memorystatus_dirty_* routines take care of adding/removing
if (p->p_memstat_state & P_MEMSTAT_FROZEN) {
if (priority <= memorystatus_freeze_jetsam_band) {
priority = memorystatus_freeze_jetsam_band;
- }
+ }
} else
#endif /* CONFIG_FREEZE */
{
priority = JETSAM_PRIORITY_ELEVATED_INACTIVE;
}
}
- assert(! (p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS));
+ assert(!(p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS));
}
} else if (isApp(p)) {
-
/*
* Check to see if the application is being lowered in jetsam priority. If so, and:
* - it has an 'elevated inactive jetsam band' attribute, then put it in the appropriate band.
* - it is a normal application, then let it age in the aging band if that policy is in effect.
*/
-
+
if (p->p_memstat_state & P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND) {
#if CONFIG_FREEZE
if (p->p_memstat_state & P_MEMSTAT_FROZEN) {
if (priority <= memorystatus_freeze_jetsam_band) {
priority = memorystatus_freeze_jetsam_band;
- }
- } else
+ }
+ } else
#endif /* CONFIG_FREEZE */
{
if (priority <= JETSAM_PRIORITY_ELEVATED_INACTIVE) {
}
}
} else {
-
if (applications_aging_band) {
- if (p->p_memstat_effectivepriority == applications_aging_band) {
+ if (p->p_memstat_effectivepriority == applications_aging_band) {
assert(old_bucket->count == (memorystatus_scheduled_idle_demotions_apps + 1));
}
if ((jetsam_aging_policy != kJetsamAgingPolicyLegacy) && (priority <= applications_aging_band)) {
- assert(! (p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS));
+ assert(!(p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS));
priority = applications_aging_band;
memorystatus_schedule_idle_demotion_locked(p, TRUE);
}
TAILQ_REMOVE(&old_bucket->list, p, p_memstat_list);
old_bucket->count--;
- new_bucket = &memstat_bucket[priority];
- if (head_insert)
+ new_bucket = &memstat_bucket[priority];
+ if (head_insert) {
TAILQ_INSERT_HEAD(&new_bucket->list, p, p_memstat_list);
- else
+ } else {
TAILQ_INSERT_TAIL(&new_bucket->list, p, p_memstat_list);
+ }
new_bucket->count++;
if (memorystatus_highwater_enabled) {
boolean_t is_fatal;
boolean_t use_active;
- /*
+ /*
* If cached limit data is updated, then the limits
* will be enforced by writing to the ledgers.
*/
boolean_t ledger_update_needed = TRUE;
/*
- * Here, we must update the cached memory limit if the task
+ * Here, we must update the cached memory limit if the task
* is transitioning between:
- * active <--> inactive
+ * active <--> inactive
* FG <--> BG
* but:
* dirty <--> clean is ignored
*/
if (p->p_memstat_dirty & P_DIRTY_TRACK) {
-
if (skip_demotion_check == TRUE && priority == JETSAM_PRIORITY_IDLE) {
CACHE_INACTIVE_LIMITS_LOCKED(p, is_fatal);
use_active = FALSE;
} else {
ledger_update_needed = FALSE;
}
-
} else if ((priority >= JETSAM_PRIORITY_FOREGROUND) && (p->p_memstat_effectivepriority < JETSAM_PRIORITY_FOREGROUND)) {
/*
- * inactive --> active
+ * inactive --> active
* BG --> FG
* assign active state
*/
CACHE_ACTIVE_LIMITS_LOCKED(p, is_fatal);
use_active = TRUE;
-
} else if ((priority < JETSAM_PRIORITY_FOREGROUND) && (p->p_memstat_effectivepriority >= JETSAM_PRIORITY_FOREGROUND)) {
/*
- * active --> inactive
+ * active --> inactive
* FG --> BG
* assign inactive state
*/
task_set_phys_footprint_limit_internal(p->task, (p->p_memstat_memlimit > 0) ? p->p_memstat_memlimit : -1, NULL, use_active, is_fatal);
MEMORYSTATUS_DEBUG(3, "memorystatus_update_priority_locked: new limit on pid %d (%dMB %s) priority old --> new (%d --> %d) dirty?=0x%x %s\n",
- p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
- (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), p->p_memstat_effectivepriority, priority, p->p_memstat_dirty,
- (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
+ p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
+ (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), p->p_memstat_effectivepriority, priority, p->p_memstat_dirty,
+ (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
}
}
* Record idle start or idle delta.
*/
if (p->p_memstat_effectivepriority == priority) {
- /*
+ /*
* This process is not transitioning between
* jetsam priority buckets. Do nothing.
*/
if (p->p_memstat_state & P_MEMSTAT_FREEZE_IGNORE) {
p->p_memstat_state &= ~P_MEMSTAT_FREEZE_IGNORE;
}
-
} else if (priority == JETSAM_PRIORITY_IDLE) {
/*
* Transitioning into the idle priority bucket.
(priority >= JETSAM_PRIORITY_FOREGROUND));
}
#endif /* CONFIG_SECLUDED_MEMORY */
-
+
memorystatus_check_levels_locked();
}
int
memorystatus_update(proc_t p, int priority, uint64_t user_data, 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)
+ int32_t memlimit_active, boolean_t memlimit_active_is_fatal,
+ int32_t memlimit_inactive, boolean_t memlimit_inactive_is_fatal)
{
int ret;
boolean_t head_insert = false;
MEMORYSTATUS_DEBUG(1, "memorystatus_update: changing (%s) pid %d: priority %d, user_data 0x%llx\n", (*p->p_name ? p->p_name : "unknown"), p->p_pid, priority, user_data);
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_UPDATE) | DBG_FUNC_START, p->p_pid, priority, user_data, effective, 0);
-
+
if (priority == -1) {
/* Use as shorthand for default priority */
priority = JETSAM_PRIORITY_DEFAULT;
} else if ((priority == system_procs_aging_band) || (priority == applications_aging_band)) {
/* Both the aging bands are reserved for internal use; if requested, adjust to JETSAM_PRIORITY_IDLE. */
- priority = JETSAM_PRIORITY_IDLE;
+ priority = JETSAM_PRIORITY_IDLE;
} else if (priority == JETSAM_PRIORITY_IDLE_HEAD) {
/* JETSAM_PRIORITY_IDLE_HEAD inserts at the head of the idle queue */
priority = JETSAM_PRIORITY_IDLE;
}
proc_list_lock();
-
+
assert(!(p->p_memstat_state & P_MEMSTAT_INTERNAL));
if (effective && (p->p_memstat_state & P_MEMSTAT_PRIORITYUPDATED)) {
ret = EALREADY;
proc_list_unlock();
MEMORYSTATUS_DEBUG(1, "memorystatus_update: effective change specified for pid %d, but change already occurred.\n", p->p_pid);
- goto out;
+ goto out;
}
if ((p->p_memstat_state & P_MEMSTAT_TERMINATED) || ((p->p_listflag & P_LIST_EXITED) != 0)) {
*/
ret = EBUSY;
proc_list_unlock();
- goto out;
+ goto out;
}
p->p_memstat_state |= P_MEMSTAT_PRIORITYUPDATED;
*/
MEMORYSTATUS_DEBUG(3, "memorystatus_update(enter): pid %d, priority %d, dirty=0x%x, Active(%dMB %s), Inactive(%dMB, %s)\n",
- p->p_pid, priority, p->p_memstat_dirty,
- memlimit_active, (memlimit_active_is_fatal ? "F " : "NF"),
- memlimit_inactive, (memlimit_inactive_is_fatal ? "F " : "NF"));
+ p->p_pid, priority, p->p_memstat_dirty,
+ memlimit_active, (memlimit_active_is_fatal ? "F " : "NF"),
+ memlimit_inactive, (memlimit_inactive_is_fatal ? "F " : "NF"));
if (memlimit_active <= 0) {
/*
/*
* For backward compatibility with some unexplained launchd behavior,
* we allow a zero sized limit. But we still enforce system_wide limit
- * when written to the ledgers.
+ * when written to the ledgers.
*/
if (memlimit_active < 0) {
task_set_phys_footprint_limit_internal(p->task, ((p->p_memstat_memlimit > 0) ? p->p_memstat_memlimit : -1), NULL, use_active, is_fatal);
MEMORYSTATUS_DEBUG(3, "memorystatus_update: init: limit on pid %d (%dMB %s) targeting priority(%d) dirty?=0x%x %s\n",
- p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
- (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), priority, p->p_memstat_dirty,
- (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
+ p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
+ (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), priority, p->p_memstat_dirty,
+ (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
}
}
* But, we could be removing it from those buckets.
* Check and take appropriate steps if so.
*/
-
+
if (isProcessInAgingBands(p)) {
-
memorystatus_invalidate_idle_demotion_locked(p, TRUE);
memorystatus_update_priority_locked(p, JETSAM_PRIORITY_IDLE, FALSE, TRUE);
} else {
- if (jetsam_aging_policy == kJetsamAgingPolicyLegacy && priority == JETSAM_PRIORITY_IDLE) {
+ if (jetsam_aging_policy == kJetsamAgingPolicyLegacy && priority == JETSAM_PRIORITY_IDLE) {
/*
* Daemons with 'inactive' limits will go through the dirty tracking codepath.
* This path deals with apps that may have 'inactive' limits e.g. WebContent processes.
{
int ret;
memstat_bucket_t *bucket;
- boolean_t reschedule = FALSE;
+ boolean_t reschedule = FALSE;
MEMORYSTATUS_DEBUG(1, "memorystatus_list_remove: removing pid %d\n", p->p_pid);
- if (!locked) {
- proc_list_lock();
- }
+ if (!locked) {
+ proc_list_lock();
+ }
assert(!(p->p_memstat_state & P_MEMSTAT_INTERNAL));
-
+
bucket = &memstat_bucket[p->p_memstat_effectivepriority];
if (isSysProc(p) && system_procs_aging_band && (p->p_memstat_effectivepriority == system_procs_aging_band)) {
-
assert(bucket->count == memorystatus_scheduled_idle_demotions_sysprocs);
reschedule = TRUE;
-
} else if (isApp(p) && applications_aging_band && (p->p_memstat_effectivepriority == applications_aging_band)) {
-
assert(bucket->count == memorystatus_scheduled_idle_demotions_apps);
reschedule = TRUE;
}
/* If awaiting demotion to the idle band, clean up */
if (reschedule) {
memorystatus_invalidate_idle_demotion_locked(p, TRUE);
- memorystatus_reschedule_idle_demotion_locked();
+ memorystatus_reschedule_idle_demotion_locked();
}
memorystatus_check_levels_locked();
-#if CONFIG_FREEZE
+#if CONFIG_FREEZE
if (p->p_memstat_state & (P_MEMSTAT_FROZEN)) {
-
if (p->p_memstat_state & P_MEMSTAT_REFREEZE_ELIGIBLE) {
p->p_memstat_state &= ~P_MEMSTAT_REFREEZE_ELIGIBLE;
memorystatus_refreeze_eligible_count--;
}
#endif
- if (!locked) {
- proc_list_unlock();
- }
+ if (!locked) {
+ proc_list_unlock();
+ }
if (p) {
- ret = 0;
+ ret = 0;
} else {
ret = ESRCH;
}
*
* Return:
* 0 on success
- * non-0 on failure
+ * non-0 on failure
*
* The proc_list_lock is held by the caller.
*/
static int
-memorystatus_validate_track_flags(struct proc *target_p, uint32_t pcontrol) {
+memorystatus_validate_track_flags(struct proc *target_p, uint32_t pcontrol)
+{
/* See that the process isn't marked for termination */
if (target_p->p_memstat_dirty & P_DIRTY_TERMINATED) {
return EBUSY;
}
-
+
/* Idle exit requires that process be tracked */
if ((pcontrol & PROC_DIRTY_ALLOW_IDLE_EXIT) &&
- !(pcontrol & PROC_DIRTY_TRACK)) {
+ !(pcontrol & PROC_DIRTY_TRACK)) {
return EINVAL;
}
/* 'Launch in progress' tracking requires that process have enabled dirty tracking too. */
if ((pcontrol & PROC_DIRTY_LAUNCH_IN_PROGRESS) &&
- !(pcontrol & PROC_DIRTY_TRACK)) {
+ !(pcontrol & PROC_DIRTY_TRACK)) {
return EINVAL;
}
/* Only one type of DEFER behavior is allowed.*/
- if ((pcontrol & PROC_DIRTY_DEFER) &&
+ if ((pcontrol & PROC_DIRTY_DEFER) &&
(pcontrol & PROC_DIRTY_DEFER_ALWAYS)) {
return EINVAL;
}
/* Deferral is only relevant if idle exit is specified */
if (((pcontrol & PROC_DIRTY_DEFER) ||
(pcontrol & PROC_DIRTY_DEFER_ALWAYS)) &&
- !(pcontrol & PROC_DIRTY_ALLOWS_IDLE_EXIT)) {
+ !(pcontrol & PROC_DIRTY_ALLOWS_IDLE_EXIT)) {
return EINVAL;
}
-
- return(0);
+
+ return 0;
}
static void
-memorystatus_update_idle_priority_locked(proc_t p) {
+memorystatus_update_idle_priority_locked(proc_t p)
+{
int32_t priority;
MEMORYSTATUS_DEBUG(1, "memorystatus_update_idle_priority_locked(): pid %d dirty 0x%X\n", p->p_pid, p->p_memstat_dirty);
- assert(isSysProc(p));
-
- if ((p->p_memstat_dirty & (P_DIRTY_IDLE_EXIT_ENABLED|P_DIRTY_IS_DIRTY)) == P_DIRTY_IDLE_EXIT_ENABLED) {
+ assert(isSysProc(p));
+ if ((p->p_memstat_dirty & (P_DIRTY_IDLE_EXIT_ENABLED | P_DIRTY_IS_DIRTY)) == P_DIRTY_IDLE_EXIT_ENABLED) {
priority = (p->p_memstat_dirty & P_DIRTY_AGING_IN_PROGRESS) ? system_procs_aging_band : JETSAM_PRIORITY_IDLE;
} else {
priority = p->p_memstat_requestedpriority;
}
-
- if (priority != p->p_memstat_effectivepriority) {
+ if (priority != p->p_memstat_effectivepriority) {
if ((jetsam_aging_policy == kJetsamAgingPolicyLegacy) &&
(priority == JETSAM_PRIORITY_IDLE)) {
-
/*
* This process is on its way into the IDLE band. The system is
* using 'legacy' jetsam aging policy. That means, this process
*/
if (p->p_memstat_state & P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND) {
-
/*
* This process has the 'elevated inactive jetsam band' attribute.
* So, there will be no trip to IDLE after all.
}
memorystatus_update_priority_locked(p, priority, false, true);
-
} else {
memorystatus_update_priority_locked(p, priority, false, false);
}
}
-}
+}
/*
* Processes can opt to have their state tracked by the kernel, indicating when they are busy (dirty) or idle
*/
int
-memorystatus_dirty_track(proc_t p, uint32_t pcontrol) {
+memorystatus_dirty_track(proc_t p, uint32_t pcontrol)
+{
unsigned int old_dirty;
boolean_t reschedule = FALSE;
boolean_t already_deferred = FALSE;
boolean_t defer_now = FALSE;
int ret = 0;
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_DIRTY_TRACK),
- p->p_pid, p->p_memstat_dirty, pcontrol, 0, 0);
-
+ p->p_pid, p->p_memstat_dirty, pcontrol, 0, 0);
+
proc_list_lock();
-
+
if ((p->p_listflag & P_LIST_EXITED) != 0) {
/*
* Process is on its way out.
ret = EPERM;
goto exit;
}
-
+
if ((ret = memorystatus_validate_track_flags(p, pcontrol)) != 0) {
/* error */
goto exit;
}
- old_dirty = p->p_memstat_dirty;
+ old_dirty = p->p_memstat_dirty;
/* These bits are cumulative, as per <rdar://problem/11159924> */
if (pcontrol & PROC_DIRTY_TRACK) {
}
if (pcontrol & PROC_DIRTY_ALLOW_IDLE_EXIT) {
- p->p_memstat_dirty |= P_DIRTY_ALLOW_IDLE_EXIT;
+ p->p_memstat_dirty |= P_DIRTY_ALLOW_IDLE_EXIT;
}
if (pcontrol & PROC_DIRTY_LAUNCH_IN_PROGRESS) {
/* This can be set and cleared exactly once. */
if (pcontrol & (PROC_DIRTY_DEFER | PROC_DIRTY_DEFER_ALWAYS)) {
-
if ((pcontrol & (PROC_DIRTY_DEFER)) &&
!(old_dirty & P_DIRTY_DEFER)) {
p->p_memstat_dirty |= P_DIRTY_DEFER;
}
MEMORYSTATUS_DEBUG(1, "memorystatus_on_track_dirty(): set idle-exit %s / defer %s / dirty %s for pid %d\n",
- ((p->p_memstat_dirty & P_DIRTY_IDLE_EXIT_ENABLED) == P_DIRTY_IDLE_EXIT_ENABLED) ? "Y" : "N",
- defer_now ? "Y" : "N",
- p->p_memstat_dirty & P_DIRTY ? "Y" : "N",
- p->p_pid);
+ ((p->p_memstat_dirty & P_DIRTY_IDLE_EXIT_ENABLED) == P_DIRTY_IDLE_EXIT_ENABLED) ? "Y" : "N",
+ defer_now ? "Y" : "N",
+ p->p_memstat_dirty & P_DIRTY ? "Y" : "N",
+ p->p_pid);
/* Kick off or invalidate the idle exit deferment if there's a state transition. */
if (!(p->p_memstat_dirty & P_DIRTY_IS_DIRTY)) {
if ((p->p_memstat_dirty & P_DIRTY_IDLE_EXIT_ENABLED) == P_DIRTY_IDLE_EXIT_ENABLED) {
-
if (defer_now && !already_deferred) {
-
/*
- * Request to defer a clean process that's idle-exit enabled
+ * Request to defer a clean process that's idle-exit enabled
* and not already in the jetsam deferred band. Most likely a
* new launch.
*/
memorystatus_schedule_idle_demotion_locked(p, TRUE);
reschedule = TRUE;
-
} else if (!defer_now) {
-
/*
* The process isn't asking for the 'aging' facility.
* Could be that it is:
* some processes have tried to use this to
* opt out of the 'aging' facility.
*/
-
+
memorystatus_invalidate_idle_demotion_locked(p, TRUE);
} else {
/*
* we'll go ahead and opt it in because this is likely
* a new launch (clean process, dirty tracking enabled)
*/
-
+
memorystatus_schedule_idle_demotion_locked(p, TRUE);
}
}
}
} else {
-
/*
* We are trying to operate on a dirty process. Dirty processes have to
- * be removed from the deferred band. The question is do we reset the
+ * be removed from the deferred band. The question is do we reset the
* deferred state or not?
*
* This could be a legal request like:
memorystatus_invalidate_idle_demotion_locked(p, TRUE);
reschedule = TRUE;
} else {
-
boolean_t reset_state = (jetsam_aging_policy != kJetsamAgingPolicyLegacy) ? TRUE : FALSE;
memorystatus_invalidate_idle_demotion_locked(p, reset_state);
}
memorystatus_update_idle_priority_locked(p);
-
+
if (reschedule) {
memorystatus_reschedule_idle_demotion_locked();
}
-
+
ret = 0;
-
-exit:
+
+exit:
proc_list_unlock();
-
+
return ret;
}
int
-memorystatus_dirty_set(proc_t p, boolean_t self, uint32_t pcontrol) {
+memorystatus_dirty_set(proc_t p, boolean_t self, uint32_t pcontrol)
+{
int ret;
boolean_t kill = false;
boolean_t reschedule = FALSE;
goto exit;
}
- if (p->p_memstat_dirty & P_DIRTY_IS_DIRTY)
+ if (p->p_memstat_dirty & P_DIRTY_IS_DIRTY) {
was_dirty = TRUE;
+ }
if (!(p->p_memstat_dirty & P_DIRTY_TRACK)) {
/* Dirty tracking not enabled */
- ret = EINVAL;
+ ret = EINVAL;
} else if (pcontrol && (p->p_memstat_dirty & P_DIRTY_TERMINATED)) {
- /*
+ /*
* Process is set to be terminated and we're attempting to mark it dirty.
* Set for termination and marking as clean is OK - see <rdar://problem/10594349>.
*/
- ret = EBUSY;
+ ret = EBUSY;
} else {
int flag = (self == TRUE) ? P_DIRTY : P_DIRTY_SHUTDOWN;
if (pcontrol && !(p->p_memstat_dirty & flag)) {
kill = true;
} else if ((flag == P_DIRTY) && (p->p_memstat_dirty & P_DIRTY_TERMINATED)) {
/* Kill previously terminated processes if set clean */
- kill = true;
+ kill = true;
}
p->p_memstat_dirty &= ~flag;
memorystatus_dirty_count--;
goto exit;
}
- if (p->p_memstat_dirty & P_DIRTY_IS_DIRTY)
+ if (p->p_memstat_dirty & P_DIRTY_IS_DIRTY) {
now_dirty = TRUE;
+ }
if ((was_dirty == TRUE && now_dirty == FALSE) ||
(was_dirty == FALSE && now_dirty == TRUE)) {
-
/* Manage idle exit deferral, if applied */
if ((p->p_memstat_dirty & P_DIRTY_IDLE_EXIT_ENABLED) == P_DIRTY_IDLE_EXIT_ENABLED) {
-
/*
* Legacy mode: P_DIRTY_AGING_IN_PROGRESS means the process is in the aging band OR it might be heading back
* there once it's clean again. For the legacy case, this only applies if it has some protection window left.
* New dirty process i.e. "was_dirty == FALSE && now_dirty == TRUE"
*
* The process will move from its aging band to its higher requested
- * jetsam band.
+ * jetsam band.
*/
boolean_t reset_state = (jetsam_aging_policy != kJetsamAgingPolicyLegacy) ? TRUE : FALSE;
memorystatus_invalidate_idle_demotion_locked(p, reset_state);
reschedule = TRUE;
} else {
-
/*
* Process is back from "dirty" to "clean".
*/
* The process' hasn't enrolled in the "always defer after dirty"
* mode and its deadline has expired. It currently
* does not reside in any of the aging buckets.
- *
- * It's on its way to the JETSAM_PRIORITY_IDLE
+ *
+ * It's on its way to the JETSAM_PRIORITY_IDLE
* bucket via memorystatus_update_idle_priority_locked()
* below.
-
+ *
* So all we need to do is reset all the state on the
* process that's related to the aging bucket i.e.
* the AGING_IN_PROGRESS flag and the timer deadline.
}
}
} else {
-
memorystatus_schedule_idle_demotion_locked(p, TRUE);
reschedule = TRUE;
}
boolean_t ledger_update_needed = TRUE;
boolean_t use_active;
boolean_t is_fatal;
- /*
- * We are in this path because this process transitioned between
+ /*
+ * We are in this path because this process transitioned between
* dirty <--> clean state. Update the cached memory limits.
*/
* out and is entering the IDLE band.
* See memorystatus_update_priority_locked() for that.
*/
-
+
if (p->p_memstat_dirty & P_DIRTY_ALLOW_IDLE_EXIT) {
ledger_update_needed = FALSE;
} else {
proc_rele_locked(p);
MEMORYSTATUS_DEBUG(3, "memorystatus_dirty_set: new limit on pid %d (%dMB %s) priority(%d) dirty?=0x%x %s\n",
- p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
- (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), p->p_memstat_effectivepriority, p->p_memstat_dirty,
- (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
+ p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
+ (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), p->p_memstat_effectivepriority, p->p_memstat_dirty,
+ (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
}
-
}
-
+
/* If the deferral state changed, reschedule the demotion timer */
if (reschedule) {
memorystatus_reschedule_idle_demotion_locked();
proc_rele_locked(p);
}
}
-
+
exit:
proc_list_unlock();
}
int
-memorystatus_dirty_clear(proc_t p, uint32_t pcontrol) {
-
+memorystatus_dirty_clear(proc_t p, uint32_t pcontrol)
+{
int ret = 0;
MEMORYSTATUS_DEBUG(1, "memorystatus_dirty_clear(): %d 0x%x 0x%x\n", p->p_pid, pcontrol, p->p_memstat_dirty);
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_DIRTY_CLEAR), p->p_pid, pcontrol, 0, 0, 0);
proc_list_lock();
if (!(p->p_memstat_dirty & P_DIRTY_TRACK)) {
/* Dirty tracking not enabled */
- ret = EINVAL;
+ ret = EINVAL;
goto exit;
- }
+ }
if (!pcontrol || (pcontrol & (PROC_DIRTY_LAUNCH_IN_PROGRESS | PROC_DIRTY_DEFER | PROC_DIRTY_DEFER_ALWAYS)) == 0) {
ret = EINVAL;
/* This can be set and cleared exactly once. */
if (pcontrol & (PROC_DIRTY_DEFER | PROC_DIRTY_DEFER_ALWAYS)) {
-
if (p->p_memstat_dirty & P_DIRTY_DEFER) {
p->p_memstat_dirty &= ~(P_DIRTY_DEFER);
}
}
int
-memorystatus_dirty_get(proc_t p) {
+memorystatus_dirty_get(proc_t p)
+{
int ret = 0;
-
+
proc_list_lock();
-
+
if (p->p_memstat_dirty & P_DIRTY_TRACK) {
ret |= PROC_DIRTY_TRACKED;
if (p->p_memstat_dirty & P_DIRTY_ALLOW_IDLE_EXIT) {
ret |= PROC_DIRTY_LAUNCH_IS_IN_PROGRESS;
}
}
-
+
proc_list_unlock();
-
+
return ret;
}
int
-memorystatus_on_terminate(proc_t p) {
+memorystatus_on_terminate(proc_t p)
+{
int sig;
-
+
proc_list_lock();
-
+
p->p_memstat_dirty |= P_DIRTY_TERMINATED;
-
- if ((p->p_memstat_dirty & (P_DIRTY_TRACK|P_DIRTY_IS_DIRTY)) == P_DIRTY_TRACK) {
+
+ if ((p->p_memstat_dirty & (P_DIRTY_TRACK | P_DIRTY_IS_DIRTY)) == P_DIRTY_TRACK) {
/* Clean; mark as terminated and issue SIGKILL */
sig = SIGKILL;
} else {
}
proc_list_unlock();
-
+
return sig;
}
}
memorystatus_suspended_count--;
-
+
pid = p->p_pid;
#endif
p->p_memstat_state &= ~P_MEMSTAT_SUSPENDED;
proc_list_unlock();
-
+
#if CONFIG_FREEZE
if (frozen) {
memorystatus_freeze_entry_t data = { pid, FALSE, 0 };
#if CONFIG_FREEZE
/* Wake the freeze thread */
thread_wakeup((event_t)&memorystatus_freeze_wakeup);
-#endif
+#endif
}
/*
* The proc_list_lock is held by the caller.
-*/
+ */
static uint32_t
-memorystatus_build_state(proc_t p) {
+memorystatus_build_state(proc_t p)
+{
uint32_t snapshot_state = 0;
-
+
/* General */
if (p->p_memstat_state & P_MEMSTAT_SUSPENDED) {
snapshot_state |= kMemorystatusSuspended;
snapshot_state |= kMemorystatusFrozen;
}
if (p->p_memstat_state & P_MEMSTAT_REFREEZE_ELIGIBLE) {
- snapshot_state |= kMemorystatusWasThawed;
+ snapshot_state |= kMemorystatusWasThawed;
}
-
+
/* Tracking */
if (p->p_memstat_dirty & P_DIRTY_TRACK) {
snapshot_state |= kMemorystatusTracked;
/* Pick next idle exit victim. */
current_time = mach_absolute_time();
-
+
jetsam_reason = os_reason_create(OS_REASON_JETSAM, JETSAM_REASON_MEMORY_IDLE_EXIT);
if (jetsam_reason == OS_REASON_NULL) {
printf("kill_idle_exit_proc: failed to allocate jetsam reason\n");
}
proc_list_lock();
-
+
p = memorystatus_get_first_proc_locked(&i, FALSE);
while (p) {
/* No need to look beyond the idle band */
if (p->p_memstat_effectivepriority != JETSAM_PRIORITY_IDLE) {
break;
}
-
- if ((p->p_memstat_dirty & (P_DIRTY_ALLOW_IDLE_EXIT|P_DIRTY_IS_DIRTY|P_DIRTY_TERMINATED)) == (P_DIRTY_ALLOW_IDLE_EXIT)) {
+
+ if ((p->p_memstat_dirty & (P_DIRTY_ALLOW_IDLE_EXIT | P_DIRTY_IS_DIRTY | P_DIRTY_TERMINATED)) == (P_DIRTY_ALLOW_IDLE_EXIT)) {
if (current_time >= p->p_memstat_idledeadline) {
p->p_memstat_dirty |= P_DIRTY_TERMINATED;
victim_p = proc_ref_locked(p);
break;
}
}
-
+
p = memorystatus_get_next_proc_locked(&i, p, FALSE);
}
-
+
proc_list_unlock();
-
+
if (victim_p) {
printf("memorystatus: killing_idle_process pid %d [%s]\n", victim_p->p_pid, (*victim_p->p_name ? victim_p->p_name : "unknown"));
killed = memorystatus_do_kill(victim_p, kMemorystatusKilledIdleExit, jetsam_reason);
static void
memorystatus_thread_wake(void)
-{
+{
int thr_id = 0;
int active_thr = atomic_load(&active_jetsam_threads);
/* Wakeup all the jetsam threads */
for (thr_id = 0; thr_id < active_thr; thr_id++) {
- thread_wakeup((event_t)&jetsam_threads[thr_id].memorystatus_wakeup);
- }
-}
-
+ thread_wakeup((event_t)&jetsam_threads[thr_id].memorystatus_wakeup);
+ }
+}
+
#if CONFIG_JETSAM
-static void
+static void
memorystatus_thread_pool_max()
{
/* Increase the jetsam thread pool to max_jetsam_threads */
} else {
assert_wait(&jetsam_thread->memorystatus_wakeup, THREAD_UNINT);
}
-
- return thread_block(continuation);
+
+ return thread_block(continuation);
}
static boolean_t
* key off of the system having dynamic swap support. With full swap support,
* the system shouldn't really need to worry about various page thresholds.
*/
- return (memorystatus_available_pages <= memorystatus_available_pages_pressure);
+ return memorystatus_available_pages <= memorystatus_available_pages_pressure;
#else /* CONFIG_EMBEDDED */
return FALSE;
#endif /* CONFIG_EMBEDDED */
memorystatus_avail_pages_below_critical(void)
{
#if CONFIG_EMBEDDED
- return (memorystatus_available_pages <= memorystatus_available_pages_critical);
+ return memorystatus_available_pages <= memorystatus_available_pages_critical;
#else /* CONFIG_EMBEDDED */
return FALSE;
#endif /* CONFIG_EMBEDDED */
* tree.
*/
- return ((priority != JETSAM_PRIORITY_IDLE) || memorystatus_idle_snapshot);
+ return (priority != JETSAM_PRIORITY_IDLE) || memorystatus_idle_snapshot;
#else /* CONFIG_EMBEDDED */
/*
*/
boolean_t snapshot_eligible_kill_cause = (is_reason_thrashing(cause) || is_reason_zone_map_exhaustion(cause));
- return ((priority != JETSAM_PRIORITY_IDLE) || memorystatus_idle_snapshot || snapshot_eligible_kill_cause);
+ return (priority != JETSAM_PRIORITY_IDLE) || memorystatus_idle_snapshot || snapshot_eligible_kill_cause;
#endif /* CONFIG_EMBEDDED */
}
memorystatus_action_needed(void)
{
#if CONFIG_EMBEDDED
- return (is_reason_thrashing(kill_under_pressure_cause) ||
- is_reason_zone_map_exhaustion(kill_under_pressure_cause) ||
- memorystatus_available_pages <= memorystatus_available_pages_pressure);
+ return is_reason_thrashing(kill_under_pressure_cause) ||
+ is_reason_zone_map_exhaustion(kill_under_pressure_cause) ||
+ memorystatus_available_pages <= memorystatus_available_pages_pressure;
#else /* CONFIG_EMBEDDED */
- return (is_reason_thrashing(kill_under_pressure_cause) ||
- is_reason_zone_map_exhaustion(kill_under_pressure_cause));
+ return is_reason_thrashing(kill_under_pressure_cause) ||
+ is_reason_zone_map_exhaustion(kill_under_pressure_cause);
#endif /* CONFIG_EMBEDDED */
}
#if CONFIG_FREEZE
-extern void vm_swap_consider_defragmenting(int);
+extern void vm_swap_consider_defragmenting(int);
/*
* This routine will _jetsam_ all frozen processes
next_p = memorystatus_get_first_proc_locked(&band, TRUE);
while (next_p) {
-
p = next_p;
next_p = memorystatus_get_next_proc_locked(&band, p, TRUE);
errors_over_prev_iteration = 0;
while (bucket_count) {
-
bucket_count--;
/*
}
#if DEVELOPMENT || DEBUG
panic("memorystatus_disable_freeze: Failed to kill all frozen processes, memorystatus_frozen_count = %d, errors = %d",
- memorystatus_frozen_count, errors_over_prev_iteration);
+ memorystatus_frozen_count, errors_over_prev_iteration);
#endif /* DEVELOPMENT || DEBUG */
}
proc_list_unlock();
os_reason_free(jetsam_reason);
if (killed) {
-
vm_swap_consider_defragmenting(VM_SWAP_FLAGS_FORCE_DEFRAG | VM_SWAP_FLAGS_FORCE_RECLAIM);
proc_list_lock();
size_t snapshot_size = sizeof(memorystatus_jetsam_snapshot_t) +
- sizeof(memorystatus_jetsam_snapshot_entry_t) * (memorystatus_jetsam_snapshot_count);
+ sizeof(memorystatus_jetsam_snapshot_entry_t) * (memorystatus_jetsam_snapshot_count);
uint64_t timestamp_now = mach_absolute_time();
memorystatus_jetsam_snapshot->notification_time = timestamp_now;
memorystatus_jetsam_snapshot->js_gencount++;
if (memorystatus_jetsam_snapshot_count > 0 && (memorystatus_jetsam_snapshot_last_timestamp == 0 ||
- timestamp_now > memorystatus_jetsam_snapshot_last_timestamp + memorystatus_jetsam_snapshot_timeout)) {
+ timestamp_now > memorystatus_jetsam_snapshot_last_timestamp + memorystatus_jetsam_snapshot_timeout)) {
proc_list_unlock();
int ret = memorystatus_send_note(kMemorystatusSnapshotNote, &snapshot_size, sizeof(snapshot_size));
if (!ret) {
#if CONFIG_JETSAM
/* No highwater processes to kill. Continue or stop for now? */
if (!is_reason_thrashing(kill_under_pressure_cause) &&
- !is_reason_zone_map_exhaustion(kill_under_pressure_cause) &&
+ !is_reason_zone_map_exhaustion(kill_under_pressure_cause) &&
(memorystatus_available_pages > memorystatus_available_pages_critical)) {
/*
* We are _not_ out of pressure but we are above the critical threshold and there's:
* - no more HWM processes left.
* For now, don't kill any other processes.
*/
-
+
if (*hwm_kill == 0) {
memorystatus_thread_wasted_wakeup++;
}
memorystatus_act_aggressive(uint32_t cause, os_reason_t jetsam_reason, int *jld_idle_kills, boolean_t *corpse_list_purged, boolean_t *post_snapshot)
{
if (memorystatus_jld_enabled == TRUE) {
-
boolean_t killed;
uint32_t errors = 0;
/* Jetsam Loop Detection - locals */
memstat_bucket_t *bucket;
- int jld_bucket_count = 0;
- struct timeval jld_now_tstamp = {0,0};
- uint64_t jld_now_msecs = 0;
- int elevated_bucket_count = 0;
+ int jld_bucket_count = 0;
+ struct timeval jld_now_tstamp = {0, 0};
+ uint64_t jld_now_msecs = 0;
+ int elevated_bucket_count = 0;
/* Jetsam Loop Detection - statics */
static uint64_t jld_timestamp_msecs = 0;
- static int jld_idle_kill_candidates = 0; /* Number of available processes in band 0,1 at start */
- static int jld_eval_aggressive_count = 0; /* Bumps the max priority in aggressive loop */
+ static int jld_idle_kill_candidates = 0; /* Number of available processes in band 0,1 at start */
+ static int jld_eval_aggressive_count = 0; /* Bumps the max priority in aggressive loop */
static int32_t jld_priority_band_max = JETSAM_PRIORITY_UI_SUPPORT;
/*
* Jetsam Loop Detection: attempt to detect
* rapid daemon relaunches in the lower bands.
*/
-
+
microuptime(&jld_now_tstamp);
/*
* memorystatus_jld_eval_aggressive_count is a tunable
* memorystatus_jld_eval_aggressive_priority_band_max is a tunable
*/
- if ( (jld_bucket_count == 0) ||
- (jld_now_msecs > (jld_timestamp_msecs + memorystatus_jld_eval_period_msecs))) {
-
- /*
- * Refresh evaluation parameters
+ if ((jld_bucket_count == 0) ||
+ (jld_now_msecs > (jld_timestamp_msecs + memorystatus_jld_eval_period_msecs))) {
+ /*
+ * Refresh evaluation parameters
*/
- jld_timestamp_msecs = jld_now_msecs;
+ jld_timestamp_msecs = jld_now_msecs;
jld_idle_kill_candidates = jld_bucket_count;
- *jld_idle_kills = 0;
+ *jld_idle_kills = 0;
jld_eval_aggressive_count = 0;
- jld_priority_band_max = JETSAM_PRIORITY_UI_SUPPORT;
+ jld_priority_band_max = JETSAM_PRIORITY_UI_SUPPORT;
}
if (*jld_idle_kills > jld_idle_kill_candidates) {
#if DEVELOPMENT || DEBUG
printf("memorystatus: aggressive%d: beginning of window: %lld ms, : timestamp now: %lld ms\n",
- jld_eval_aggressive_count,
- jld_timestamp_msecs,
- jld_now_msecs);
+ jld_eval_aggressive_count,
+ jld_timestamp_msecs,
+ jld_now_msecs);
printf("memorystatus: aggressive%d: idle candidates: %d, idle kills: %d\n",
- jld_eval_aggressive_count,
- jld_idle_kill_candidates,
- *jld_idle_kills);
+ jld_eval_aggressive_count,
+ jld_idle_kill_candidates,
+ *jld_idle_kills);
#endif /* DEVELOPMENT || DEBUG */
if ((jld_eval_aggressive_count == memorystatus_jld_eval_aggressive_count) &&
*/
task_purge_all_corpses();
*corpse_list_purged = TRUE;
- }
- else if (jld_eval_aggressive_count > memorystatus_jld_eval_aggressive_count) {
- /*
+ } else if (jld_eval_aggressive_count > memorystatus_jld_eval_aggressive_count) {
+ /*
* Bump up the jetsam priority limit (eg: the bucket index)
* Enforce bucket index sanity.
*/
- if ((memorystatus_jld_eval_aggressive_priority_band_max < 0) ||
+ if ((memorystatus_jld_eval_aggressive_priority_band_max < 0) ||
(memorystatus_jld_eval_aggressive_priority_band_max >= MEMSTAT_BUCKET_COUNT)) {
/*
* Do nothing. Stick with the default level.
/* Visit elevated processes first */
while (elevated_bucket_count) {
-
elevated_bucket_count--;
/*
*/
killed = memorystatus_kill_top_process_aggressive(
kMemorystatusKilledProcThrashing,
- jld_eval_aggressive_count,
- jld_priority_band_max,
+ jld_eval_aggressive_count,
+ jld_priority_band_max,
&errors);
-
+
if (killed) {
/* Always generate logs after aggressive kill */
*post_snapshot = TRUE;
*jld_idle_kills = 0;
return TRUE;
- }
+ }
}
return FALSE;
uint32_t hwm_kill = 0;
boolean_t sort_flag = TRUE;
boolean_t corpse_list_purged = FALSE;
- int jld_idle_kills = 0;
+ int jld_idle_kills = 0;
struct jetsam_thread_state *jetsam_thread = jetsam_current_thread();
if (jetsam_thread->inited == FALSE) {
- /*
+ /*
* It's the first time the thread has run, so just mark the thread as privileged and block.
* This avoids a spurious pass with unset variables, as set out in <rdar://problem/9609402>.
*/
jetsam_thread->inited = TRUE;
memorystatus_thread_block(0, memorystatus_thread);
}
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_SCAN) | DBG_FUNC_START,
- memorystatus_available_pages, memorystatus_jld_enabled, memorystatus_jld_eval_period_msecs, memorystatus_jld_eval_aggressive_count,0);
+ memorystatus_available_pages, memorystatus_jld_enabled, memorystatus_jld_eval_period_msecs, memorystatus_jld_eval_aggressive_count, 0);
/*
* Jetsam aware version.
*
* The VM pressure notification thread is working it's way through clients in parallel.
*
- * So, while the pressure notification thread is targeting processes in order of
- * increasing jetsam priority, we can hopefully reduce / stop it's work by killing
+ * So, while the pressure notification thread is targeting processes in order of
+ * increasing jetsam priority, we can hopefully reduce / stop it's work by killing
* any processes that have exceeded their highwater mark.
*
* If we run out of HWM processes and our available pages drops below the critical threshold, then,
cause = kill_under_pressure_cause;
switch (cause) {
- case kMemorystatusKilledFCThrashing:
- jetsam_reason_code = JETSAM_REASON_MEMORY_FCTHRASHING;
- break;
- case kMemorystatusKilledVMCompressorThrashing:
- jetsam_reason_code = JETSAM_REASON_MEMORY_VMCOMPRESSOR_THRASHING;
- break;
- case kMemorystatusKilledVMCompressorSpaceShortage:
- jetsam_reason_code = JETSAM_REASON_MEMORY_VMCOMPRESSOR_SPACE_SHORTAGE;
- break;
- case kMemorystatusKilledZoneMapExhaustion:
- jetsam_reason_code = JETSAM_REASON_ZONE_MAP_EXHAUSTION;
- break;
- case kMemorystatusKilledVMPageShortage:
- /* falls through */
- default:
- jetsam_reason_code = JETSAM_REASON_MEMORY_VMPAGESHORTAGE;
- cause = kMemorystatusKilledVMPageShortage;
- break;
+ case kMemorystatusKilledFCThrashing:
+ jetsam_reason_code = JETSAM_REASON_MEMORY_FCTHRASHING;
+ break;
+ case kMemorystatusKilledVMCompressorThrashing:
+ jetsam_reason_code = JETSAM_REASON_MEMORY_VMCOMPRESSOR_THRASHING;
+ break;
+ case kMemorystatusKilledVMCompressorSpaceShortage:
+ jetsam_reason_code = JETSAM_REASON_MEMORY_VMCOMPRESSOR_SPACE_SHORTAGE;
+ break;
+ case kMemorystatusKilledZoneMapExhaustion:
+ jetsam_reason_code = JETSAM_REASON_ZONE_MAP_EXHAUSTION;
+ break;
+ case kMemorystatusKilledVMPageShortage:
+ /* falls through */
+ default:
+ jetsam_reason_code = JETSAM_REASON_MEMORY_VMPAGESHORTAGE;
+ cause = kMemorystatusKilledVMPageShortage;
+ break;
}
/* Highwater */
if (killed) {
if (memorystatus_post_snapshot(priority, cause) == TRUE) {
-
- post_snapshot = TRUE;
+ post_snapshot = TRUE;
}
/* Jetsam Loop Detection */
}
goto done;
}
-
+
if (memorystatus_avail_pages_below_critical()) {
/*
* Still under pressure and unable to kill a process - purge corpse memory
panic("memorystatus_jetsam_thread: no victim! available pages:%llu\n", (uint64_t)memorystatus_available_pages);
}
}
-
-done:
+
+done:
/*
* We do not want to over-kill when thrashing has been detected.
}
kill_under_pressure_cause = 0;
-
+
if (errors) {
memorystatus_clear_errors();
}
if (post_snapshot) {
proc_list_lock();
size_t snapshot_size = sizeof(memorystatus_jetsam_snapshot_t) +
- sizeof(memorystatus_jetsam_snapshot_entry_t) * (memorystatus_jetsam_snapshot_count);
+ sizeof(memorystatus_jetsam_snapshot_entry_t) * (memorystatus_jetsam_snapshot_count);
uint64_t timestamp_now = mach_absolute_time();
memorystatus_jetsam_snapshot->notification_time = timestamp_now;
memorystatus_jetsam_snapshot->js_gencount++;
if (memorystatus_jetsam_snapshot_count > 0 && (memorystatus_jetsam_snapshot_last_timestamp == 0 ||
- timestamp_now > memorystatus_jetsam_snapshot_last_timestamp + memorystatus_jetsam_snapshot_timeout)) {
+ timestamp_now > memorystatus_jetsam_snapshot_last_timestamp + memorystatus_jetsam_snapshot_timeout)) {
proc_list_unlock();
int ret = memorystatus_send_note(kMemorystatusSnapshotNote, &snapshot_size, sizeof(snapshot_size));
if (!ret) {
}
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_SCAN) | DBG_FUNC_END,
- memorystatus_available_pages, 0, 0, 0, 0);
+ memorystatus_available_pages, 0, 0, 0, 0);
memorystatus_thread_block(0, memorystatus_thread);
}
/*
* Returns TRUE:
- * when an idle-exitable proc was killed
+ * when an idle-exitable proc was killed
* Returns FALSE:
* when there are no more idle-exitable procs found
- * when the attempt to kill an idle-exitable proc failed
+ * when the attempt to kill an idle-exitable proc failed
*/
-boolean_t memorystatus_idle_exit_from_VM(void) {
-
+boolean_t
+memorystatus_idle_exit_from_VM(void)
+{
/*
* This routine should no longer be needed since we are
* now using jetsam bands on all platforms and so will deal
* to rather kill those processes than start swapping earlier.
*/
- return(kill_idle_exit_proc());
+ return kill_idle_exit_proc();
}
/*
* This is a warning path which implies that the current process is close, but has
* not yet exceeded its per-process memory limit.
*/
- if (memorystatus_warn_process(p->p_pid, memlimit_is_active, memlimit_is_fatal, FALSE /* not exceeded */) != TRUE) {
+ if (memorystatus_warn_process(p->p_pid, memlimit_is_active, memlimit_is_fatal, FALSE /* not exceeded */) != TRUE) {
/* Print warning, since it's possible that task has not registered for pressure notifications */
os_log(OS_LOG_DEFAULT, "memorystatus_on_ledger_footprint_exceeded: failed to warn the current task (%d exiting, or no handler registered?).\n", p->p_pid);
}
*/
os_log_with_startup_serial(OS_LOG_DEFAULT, "EXC_RESOURCE -> %s[%d] exceeded mem limit: %s%s %d MB (%s)\n",
- (*p->p_name ? p->p_name : "unknown"), p->p_pid, (memlimit_is_active ? "Active" : "Inactive"),
- (memlimit_is_fatal ? "Hard" : "Soft"), max_footprint_mb,
- (memlimit_is_fatal ? "fatal" : "non-fatal"));
+ (*p->p_name ? p->p_name : "unknown"), p->p_pid, (memlimit_is_active ? "Active" : "Inactive"),
+ (memlimit_is_fatal ? "Hard" : "Soft"), max_footprint_mb,
+ (memlimit_is_fatal ? "fatal" : "non-fatal"));
return;
}
*/
static boolean_t
-proc_jetsam_state_is_active_locked(proc_t p) {
-
+proc_jetsam_state_is_active_locked(proc_t p)
+{
if ((p->p_memstat_state & P_MEMSTAT_USE_ELEVATED_INACTIVE_BAND) &&
(p->p_memstat_effectivepriority == JETSAM_PRIORITY_ELEVATED_INACTIVE)) {
/*
}
}
-static boolean_t
-memorystatus_kill_process_sync(pid_t victim_pid, uint32_t cause, os_reason_t jetsam_reason) {
+static boolean_t
+memorystatus_kill_process_sync(pid_t victim_pid, uint32_t cause, os_reason_t jetsam_reason)
+{
boolean_t res;
uint32_t errors = 0;
} else {
res = memorystatus_kill_specific_process(victim_pid, cause, jetsam_reason);
}
-
+
if (errors) {
memorystatus_clear_errors();
}
if (res == TRUE) {
/* Fire off snapshot notification */
proc_list_lock();
- size_t snapshot_size = sizeof(memorystatus_jetsam_snapshot_t) +
- sizeof(memorystatus_jetsam_snapshot_entry_t) * memorystatus_jetsam_snapshot_count;
+ size_t snapshot_size = sizeof(memorystatus_jetsam_snapshot_t) +
+ sizeof(memorystatus_jetsam_snapshot_entry_t) * memorystatus_jetsam_snapshot_count;
uint64_t timestamp_now = mach_absolute_time();
memorystatus_jetsam_snapshot->notification_time = timestamp_now;
if (memorystatus_jetsam_snapshot_count > 0 && (memorystatus_jetsam_snapshot_last_timestamp == 0 ||
- timestamp_now > memorystatus_jetsam_snapshot_last_timestamp + memorystatus_jetsam_snapshot_timeout)) {
+ timestamp_now > memorystatus_jetsam_snapshot_last_timestamp + memorystatus_jetsam_snapshot_timeout)) {
proc_list_unlock();
int ret = memorystatus_send_note(kMemorystatusSnapshotNote, &snapshot_size, sizeof(snapshot_size));
if (!ret) {
/*
* Jetsam a specific process.
*/
-static boolean_t
-memorystatus_kill_specific_process(pid_t victim_pid, uint32_t cause, os_reason_t jetsam_reason) {
+static boolean_t
+memorystatus_kill_specific_process(pid_t victim_pid, uint32_t cause, os_reason_t jetsam_reason)
+{
boolean_t killed;
proc_t p;
uint64_t killtime = 0;
- clock_sec_t tv_sec;
- clock_usec_t tv_usec;
- uint32_t tv_msec;
+ clock_sec_t tv_sec;
+ clock_usec_t tv_usec;
+ uint32_t tv_msec;
/* TODO - add a victim queue and push this into the main jetsam thread */
proc_list_lock();
if (memorystatus_jetsam_snapshot_count == 0) {
- memorystatus_init_jetsam_snapshot_locked(NULL,0);
+ memorystatus_init_jetsam_snapshot_locked(NULL, 0);
}
killtime = mach_absolute_time();
- absolutetime_to_microtime(killtime, &tv_sec, &tv_usec);
- tv_msec = tv_usec / 1000;
+ absolutetime_to_microtime(killtime, &tv_sec, &tv_usec);
+ tv_msec = tv_usec / 1000;
memorystatus_update_jetsam_snapshot_entry_locked(p, cause, killtime);
proc_list_unlock();
os_log_with_startup_serial(OS_LOG_DEFAULT, "%lu.%03d memorystatus: killing_specific_process pid %d [%s] (%s %d) - memorystatus_available_pages: %llu\n",
- (unsigned long)tv_sec, tv_msec, victim_pid, (*p->p_name ? p->p_name : "unknown"),
- memorystatus_kill_cause_name[cause], p->p_memstat_effectivepriority, (uint64_t)memorystatus_available_pages);
-
+ (unsigned long)tv_sec, tv_msec, victim_pid, (*p->p_name ? p->p_name : "unknown"),
+ memorystatus_kill_cause_name[cause], p->p_memstat_effectivepriority, (uint64_t)memorystatus_available_pages);
+
killed = memorystatus_do_kill(p, cause, jetsam_reason);
proc_rele(p);
-
+
return killed;
}
/*
* This is invoked when cpulimits have been exceeded while in fatal mode.
* The jetsam_flags do not apply as those are for memory related kills.
- * We call this routine so that the offending process is killed with
+ * We call this routine so that the offending process is killed with
* a non-zero exit status.
*/
void
os_reason_t jetsam_reason = OS_REASON_NULL;
printf("task_exceeded_cpulimit: killing pid %d [%s]\n",
- p->p_pid, (*p->p_name ? p->p_name : "(unknown)"));
+ p->p_pid, (*p->p_name ? p->p_name : "(unknown)"));
jetsam_reason = os_reason_create(OS_REASON_JETSAM, JETSAM_REASON_CPULIMIT);
if (jetsam_reason == OS_REASON_NULL) {
}
retval = jetsam_do_kill(p, jetsam_flags, jetsam_reason);
-
+
if (retval) {
printf("task_exceeded_cpulimit: failed to kill current task (exiting?).\n");
}
static int sysctl_memorystatus_vm_map_fork_pidwatch SYSCTL_HANDLER_ARGS {
#pragma unused(oidp, arg1, arg2)
- uint64_t new_value = 0;
+ uint64_t new_value = 0;
uint64_t old_value = 0;
- int error = 0;
+ int error = 0;
/*
* The pid is held in the low 32 bits.
*/
old_value = memorystatus_vm_map_fork_pidwatch_val;
- error = sysctl_io_number(req, old_value, sizeof(old_value), &new_value, NULL);
+ error = sysctl_io_number(req, old_value, sizeof(old_value), &new_value, NULL);
- if (error || !req->newptr) {
+ if (error || !req->newptr) {
/*
* No new value passed in.
*/
- return(error);
+ return error;
}
/*
memorystatus_vm_map_fork_pidwatch_val = new_value & 0xFFFFFFFF;
printf("memorystatus: pidwatch old_value = 0x%llx, new_value = 0x%llx \n", old_value, new_value);
- return(error);
+ return error;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_map_fork_pidwatch, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED| CTLFLAG_MASKED,
- 0, 0, sysctl_memorystatus_vm_map_fork_pidwatch, "Q", "get/set pid watched for in vm_map_fork");
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_map_fork_pidwatch, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_MASKED,
+ 0, 0, sysctl_memorystatus_vm_map_fork_pidwatch, "Q", "get/set pid watched for in vm_map_fork");
/*
if (max_task_footprint_mb == 0) {
set_vm_map_fork_pidwatch(task, MEMORYSTATUS_VM_MAP_FORK_ALLOWED);
- return (is_allowed);
+ return is_allowed;
}
footprint_in_bytes = get_task_phys_footprint(task);
if (footprint_in_bytes > max_allowed_bytes) {
printf("memorystatus disallowed vm_map_fork %lld %lld\n", footprint_in_bytes, max_allowed_bytes);
set_vm_map_fork_pidwatch(task, MEMORYSTATUS_VM_MAP_FORK_NOT_ALLOWED);
- return (!is_allowed);
+ return !is_allowed;
}
#endif /* CONFIG_EMBEDDED */
set_vm_map_fork_pidwatch(task, MEMORYSTATUS_VM_MAP_FORK_ALLOWED);
- return (is_allowed);
-
+ return is_allowed;
}
static void
*footprint = (uint32_t)pages;
if (max_footprint_lifetime) {
- pages = (get_task_resident_max(task) / PAGE_SIZE_64);
+ pages = (get_task_phys_footprint_lifetime_max(task) / PAGE_SIZE_64);
assert(((uint32_t)pages) == pages);
*max_footprint_lifetime = (uint32_t)pages;
}
static void
memorystatus_get_task_phys_footprint_page_counts(task_t task,
- uint64_t *internal_pages, uint64_t *internal_compressed_pages,
- uint64_t *purgeable_nonvolatile_pages, uint64_t *purgeable_nonvolatile_compressed_pages,
- uint64_t *alternate_accounting_pages, uint64_t *alternate_accounting_compressed_pages,
- uint64_t *iokit_mapped_pages, uint64_t *page_table_pages)
+ uint64_t *internal_pages, uint64_t *internal_compressed_pages,
+ uint64_t *purgeable_nonvolatile_pages, uint64_t *purgeable_nonvolatile_compressed_pages,
+ uint64_t *alternate_accounting_pages, uint64_t *alternate_accounting_compressed_pages,
+ uint64_t *iokit_mapped_pages, uint64_t *page_table_pages)
{
assert(task);
for (i = 0; i < memorystatus_jetsam_snapshot_count; i++) {
if (snapshot_list[i].pid == p->p_pid) {
-
entry = &snapshot_list[i];
if (entry->killed || entry->jse_killtime) {
* If a process has moved between bands since snapshot was
* initialized, then likely these fields changed too.
*/
- if (entry->priority != p->p_memstat_effectivepriority) {
-
+ if (entry->priority != p->p_memstat_effectivepriority) {
strlcpy(entry->name, p->p_name, sizeof(entry->name));
entry->priority = p->p_memstat_effectivepriority;
entry->state = memorystatus_build_state(p);
entry->user_data = p->p_memstat_userdata;
entry->fds = p->p_fd->fd_nfiles;
- }
-
- /*
- * Always update the page counts on a kill.
- */
-
- uint32_t pages = 0;
- uint32_t max_pages_lifetime = 0;
- uint32_t purgeable_pages = 0;
-
- memorystatus_get_task_page_counts(p->task, &pages, &max_pages_lifetime, &purgeable_pages);
- entry->pages = (uint64_t)pages;
- entry->max_pages_lifetime = (uint64_t)max_pages_lifetime;
- entry->purgeable_pages = (uint64_t)purgeable_pages;
-
- uint64_t internal_pages = 0;
- uint64_t internal_compressed_pages = 0;
- uint64_t purgeable_nonvolatile_pages = 0;
- uint64_t purgeable_nonvolatile_compressed_pages = 0;
- uint64_t alternate_accounting_pages = 0;
- uint64_t alternate_accounting_compressed_pages = 0;
- uint64_t iokit_mapped_pages = 0;
- uint64_t page_table_pages = 0;
-
- memorystatus_get_task_phys_footprint_page_counts(p->task, &internal_pages, &internal_compressed_pages,
- &purgeable_nonvolatile_pages, &purgeable_nonvolatile_compressed_pages,
- &alternate_accounting_pages, &alternate_accounting_compressed_pages,
- &iokit_mapped_pages, &page_table_pages);
+ }
- entry->jse_internal_pages = internal_pages;
- entry->jse_internal_compressed_pages = internal_compressed_pages;
- entry->jse_purgeable_nonvolatile_pages = purgeable_nonvolatile_pages;
- entry->jse_purgeable_nonvolatile_compressed_pages = purgeable_nonvolatile_compressed_pages;
- entry->jse_alternate_accounting_pages = alternate_accounting_pages;
- entry->jse_alternate_accounting_compressed_pages = alternate_accounting_compressed_pages;
- entry->jse_iokit_mapped_pages = iokit_mapped_pages;
- entry->jse_page_table_pages = page_table_pages;
+ /*
+ * Always update the page counts on a kill.
+ */
- uint64_t region_count = 0;
- memorystatus_get_task_memory_region_count(p->task, ®ion_count);
- entry->jse_memory_region_count = region_count;
+ uint32_t pages = 0;
+ uint32_t max_pages_lifetime = 0;
+ uint32_t purgeable_pages = 0;
+
+ memorystatus_get_task_page_counts(p->task, &pages, &max_pages_lifetime, &purgeable_pages);
+ entry->pages = (uint64_t)pages;
+ entry->max_pages_lifetime = (uint64_t)max_pages_lifetime;
+ entry->purgeable_pages = (uint64_t)purgeable_pages;
+
+ uint64_t internal_pages = 0;
+ uint64_t internal_compressed_pages = 0;
+ uint64_t purgeable_nonvolatile_pages = 0;
+ uint64_t purgeable_nonvolatile_compressed_pages = 0;
+ uint64_t alternate_accounting_pages = 0;
+ uint64_t alternate_accounting_compressed_pages = 0;
+ uint64_t iokit_mapped_pages = 0;
+ uint64_t page_table_pages = 0;
+
+ memorystatus_get_task_phys_footprint_page_counts(p->task, &internal_pages, &internal_compressed_pages,
+ &purgeable_nonvolatile_pages, &purgeable_nonvolatile_compressed_pages,
+ &alternate_accounting_pages, &alternate_accounting_compressed_pages,
+ &iokit_mapped_pages, &page_table_pages);
+
+ entry->jse_internal_pages = internal_pages;
+ entry->jse_internal_compressed_pages = internal_compressed_pages;
+ entry->jse_purgeable_nonvolatile_pages = purgeable_nonvolatile_pages;
+ entry->jse_purgeable_nonvolatile_compressed_pages = purgeable_nonvolatile_compressed_pages;
+ entry->jse_alternate_accounting_pages = alternate_accounting_pages;
+ entry->jse_alternate_accounting_compressed_pages = alternate_accounting_compressed_pages;
+ entry->jse_iokit_mapped_pages = iokit_mapped_pages;
+ entry->jse_page_table_pages = page_table_pages;
+
+ uint64_t region_count = 0;
+ memorystatus_get_task_memory_region_count(p->task, ®ion_count);
+ entry->jse_memory_region_count = region_count;
- goto exit;
+ goto exit;
}
}
unsigned int next = memorystatus_jetsam_snapshot_count;
- if(memorystatus_init_jetsam_snapshot_entry_locked(p, &snapshot_list[next], (snapshot->js_gencount)) == TRUE) {
-
+ if (memorystatus_init_jetsam_snapshot_entry_locked(p, &snapshot_list[next], (snapshot->js_gencount)) == TRUE) {
entry = &snapshot_list[next];
entry->killed = kill_cause;
entry->jse_killtime = killtime;
* when we notice we've hit the max.
*/
printf("memorystatus: WARNING snapshot buffer is full, count %d\n",
- memorystatus_jetsam_snapshot_count);
+ memorystatus_jetsam_snapshot_count);
}
}
}
*/
MEMORYSTATUS_DEBUG(4, "memorystatus_update_jetsam_snapshot_entry_locked: failed to update pid %d, priority %d, count %d\n",
- p->p_pid, p->p_memstat_effectivepriority, memorystatus_jetsam_snapshot_count);
+ p->p_pid, p->p_memstat_effectivepriority, memorystatus_jetsam_snapshot_count);
}
return;
}
#if CONFIG_JETSAM
-void memorystatus_pages_update(unsigned int pages_avail)
+void
+memorystatus_pages_update(unsigned int pages_avail)
{
memorystatus_available_pages = pages_avail;
#if VM_PRESSURE_EVENTS
/*
* Since memorystatus_available_pages changes, we should
- * re-evaluate the pressure levels on the system and
+ * re-evaluate the pressure levels on the system and
* check if we need to wake the pressure thread.
* We also update memorystatus_level in that routine.
- */
+ */
vm_pressure_response();
if (memorystatus_available_pages <= memorystatus_available_pages_pressure) {
-
if (memorystatus_hwm_candidates || (memorystatus_available_pages <= memorystatus_available_pages_critical)) {
memorystatus_thread_wake();
}
if (memorystatus_freeze_thread_should_run() == TRUE) {
/*
* The freezer thread is usually woken up by some user-space call i.e. pid_hibernate(any process).
- * That trigger isn't invoked often enough and so we are enabling this explicit wakeup here.
+ * That trigger isn't invoked often enough and so we are enabling this explicit wakeup here.
*/
if (VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
thread_wakeup((event_t)&memorystatus_freeze_wakeup);
#else /* VM_PRESSURE_EVENTS */
boolean_t critical, delta;
-
+
if (!memorystatus_delta) {
- return;
+ return;
}
-
+
critical = (pages_avail < memorystatus_available_pages_critical) ? TRUE : FALSE;
- delta = ((pages_avail >= (memorystatus_available_pages + memorystatus_delta))
- || (memorystatus_available_pages >= (pages_avail + memorystatus_delta))) ? TRUE : FALSE;
-
+ delta = ((pages_avail >= (memorystatus_available_pages + memorystatus_delta))
+ || (memorystatus_available_pages >= (pages_avail + memorystatus_delta))) ? TRUE : FALSE;
+
if (critical || delta) {
unsigned int total_pages;
static boolean_t
memorystatus_init_jetsam_snapshot_entry_locked(proc_t p, memorystatus_jetsam_snapshot_entry_t *entry, uint64_t gencount)
-{
+{
clock_sec_t tv_sec;
clock_usec_t tv_usec;
uint32_t pages = 0;
uint32_t max_pages_lifetime = 0;
uint32_t purgeable_pages = 0;
- uint64_t internal_pages = 0;
- uint64_t internal_compressed_pages = 0;
- uint64_t purgeable_nonvolatile_pages = 0;
- uint64_t purgeable_nonvolatile_compressed_pages = 0;
- uint64_t alternate_accounting_pages = 0;
- uint64_t alternate_accounting_compressed_pages = 0;
- uint64_t iokit_mapped_pages = 0;
- uint64_t page_table_pages =0;
- uint64_t region_count = 0;
+ uint64_t internal_pages = 0;
+ uint64_t internal_compressed_pages = 0;
+ uint64_t purgeable_nonvolatile_pages = 0;
+ uint64_t purgeable_nonvolatile_compressed_pages = 0;
+ uint64_t alternate_accounting_pages = 0;
+ uint64_t alternate_accounting_compressed_pages = 0;
+ uint64_t iokit_mapped_pages = 0;
+ uint64_t page_table_pages = 0;
+ uint64_t region_count = 0;
uint64_t cids[COALITION_NUM_TYPES];
memset(entry, 0, sizeof(memorystatus_jetsam_snapshot_entry_t));
entry->purgeable_pages = (uint64_t)purgeable_pages;
memorystatus_get_task_phys_footprint_page_counts(p->task, &internal_pages, &internal_compressed_pages,
- &purgeable_nonvolatile_pages, &purgeable_nonvolatile_compressed_pages,
- &alternate_accounting_pages, &alternate_accounting_compressed_pages,
- &iokit_mapped_pages, &page_table_pages);
+ &purgeable_nonvolatile_pages, &purgeable_nonvolatile_compressed_pages,
+ &alternate_accounting_pages, &alternate_accounting_compressed_pages,
+ &iokit_mapped_pages, &page_table_pages);
entry->jse_internal_pages = internal_pages;
entry->jse_internal_compressed_pages = internal_compressed_pages;
entry->cpu_time.tv_usec = (int64_t)tv_usec;
assert(p->p_stats != NULL);
- entry->jse_starttime = p->p_stats->ps_start; /* abstime process started */
- entry->jse_killtime = 0; /* abstime jetsam chose to kill process */
- entry->killed = 0; /* the jetsam kill cause */
- entry->jse_gencount = gencount; /* indicates a pass through jetsam thread, when process was targeted to be killed */
+ entry->jse_starttime = p->p_stats->ps_start; /* abstime process started */
+ entry->jse_killtime = 0; /* abstime jetsam chose to kill process */
+ entry->killed = 0; /* the jetsam kill cause */
+ entry->jse_gencount = gencount; /* indicates a pass through jetsam thread, when process was targeted to be killed */
entry->jse_idle_delta = p->p_memstat_idle_delta; /* Most recent timespan spent in idle-band */
proc_coalitionids(p, cids);
entry->jse_coalition_jetsam_id = cids[COALITION_TYPE_JETSAM];
- return TRUE;
+ return TRUE;
}
static void
memorystatus_init_snapshot_vmstats(memorystatus_jetsam_snapshot_t *snapshot)
{
kern_return_t kr = KERN_SUCCESS;
- mach_msg_type_number_t count = HOST_VM_INFO64_COUNT;
- vm_statistics64_data_t vm_stat;
+ mach_msg_type_number_t count = HOST_VM_INFO64_COUNT;
+ vm_statistics64_data_t vm_stat;
if ((kr = host_statistics64(host_self(), HOST_VM_INFO64, (host_info64_t)&vm_stat, &count)) != KERN_SUCCESS) {
printf("memorystatus_init_jetsam_snapshot_stats: host_statistics64 failed with %d\n", kr);
memset(&snapshot->stats, 0, sizeof(snapshot->stats));
} else {
- snapshot->stats.free_pages = vm_stat.free_count;
- snapshot->stats.active_pages = vm_stat.active_count;
- snapshot->stats.inactive_pages = vm_stat.inactive_count;
- snapshot->stats.throttled_pages = vm_stat.throttled_count;
- snapshot->stats.purgeable_pages = vm_stat.purgeable_count;
- snapshot->stats.wired_pages = vm_stat.wire_count;
+ snapshot->stats.free_pages = vm_stat.free_count;
+ snapshot->stats.active_pages = vm_stat.active_count;
+ snapshot->stats.inactive_pages = vm_stat.inactive_count;
+ snapshot->stats.throttled_pages = vm_stat.throttled_count;
+ snapshot->stats.purgeable_pages = vm_stat.purgeable_count;
+ snapshot->stats.wired_pages = vm_stat.wire_count;
snapshot->stats.speculative_pages = vm_stat.speculative_count;
snapshot->stats.filebacked_pages = vm_stat.external_page_count;
get_zone_map_size(&snapshot->stats.zone_map_size, &snapshot->stats.zone_map_capacity);
get_largest_zone_info(snapshot->stats.largest_zone_name, sizeof(snapshot->stats.largest_zone_name),
- &snapshot->stats.largest_zone_size);
+ &snapshot->stats.largest_zone_size);
}
/*
* Data can be consumed at any time.
*/
void
-memorystatus_init_at_boot_snapshot() {
+memorystatus_init_at_boot_snapshot()
+{
memorystatus_init_snapshot_vmstats(&memorystatus_at_boot_snapshot);
memorystatus_at_boot_snapshot.entry_count = 0;
memorystatus_at_boot_snapshot.notification_time = 0; /* updated when consumed */
while (next_p) {
p = next_p;
next_p = memorystatus_get_next_proc_locked(&b, p, TRUE);
-
+
if (FALSE == memorystatus_init_jetsam_snapshot_entry_locked(p, &snapshot_list[i], snapshot->js_gencount)) {
continue;
}
-
+
MEMORYSTATUS_DEBUG(0, "jetsam snapshot pid %d, uuid = %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
- p->p_pid,
- p->p_uuid[0], p->p_uuid[1], p->p_uuid[2], p->p_uuid[3], p->p_uuid[4], p->p_uuid[5], p->p_uuid[6], p->p_uuid[7],
- p->p_uuid[8], p->p_uuid[9], p->p_uuid[10], p->p_uuid[11], p->p_uuid[12], p->p_uuid[13], p->p_uuid[14], p->p_uuid[15]);
+ p->p_pid,
+ p->p_uuid[0], p->p_uuid[1], p->p_uuid[2], p->p_uuid[3], p->p_uuid[4], p->p_uuid[5], p->p_uuid[6], p->p_uuid[7],
+ p->p_uuid[8], p->p_uuid[9], p->p_uuid[10], p->p_uuid[11], p->p_uuid[12], p->p_uuid[13], p->p_uuid[14], p->p_uuid[15]);
if (++i == snapshot_max) {
break;
- }
+ }
}
snapshot->entry_count = i;
#if CONFIG_JETSAM
static int
-memorystatus_cmd_set_panic_bits(user_addr_t buffer, uint32_t buffer_size) {
+memorystatus_cmd_set_panic_bits(user_addr_t buffer, uint32_t buffer_size)
+{
int ret;
memorystatus_jetsam_panic_options_t debug;
-
+
if (buffer_size != sizeof(memorystatus_jetsam_panic_options_t)) {
return EINVAL;
}
if (ret) {
return ret;
}
-
+
/* Panic bits match kMemorystatusKilled* enum */
memorystatus_jetsam_panic_debug = (memorystatus_jetsam_panic_debug & ~debug.mask) | (debug.data & debug.mask);
-
+
/* Copyout new value */
debug.data = memorystatus_jetsam_panic_debug;
ret = copyout(&debug, buffer, sizeof(memorystatus_jetsam_panic_options_t));
-
+
return ret;
}
#endif /* CONFIG_JETSAM */
* function.
*/
static int
-memorystatus_cmd_test_jetsam_sort(int priority, int sort_order) {
-
+memorystatus_cmd_test_jetsam_sort(int priority, int sort_order)
+{
int error = 0;
unsigned int bucket_index = 0;
error = memorystatus_sort_bucket(bucket_index, sort_order);
- return (error);
+ return error;
}
#endif /* DEVELOPMENT || DEBUG */
pid_t aPid = 0;
uint32_t aPid_ep = 0;
- uint64_t killtime = 0;
- clock_sec_t tv_sec;
- clock_usec_t tv_usec;
- uint32_t tv_msec;
- boolean_t retval = FALSE;
- uint64_t num_pages_purged = 0;
+ uint64_t killtime = 0;
+ clock_sec_t tv_sec;
+ clock_usec_t tv_usec;
+ uint32_t tv_msec;
+ boolean_t retval = FALSE;
+ uint64_t num_pages_purged = 0;
aPid = p->p_pid;
aPid_ep = p->p_memstat_effectivepriority;
*/
if (cause == kMemorystatusKilledHiwat) {
uint64_t footprint_in_bytes = get_task_phys_footprint(p->task);
- uint64_t memlimit_in_bytes = (((uint64_t)p->p_memstat_memlimit) * 1024ULL * 1024ULL); /* convert MB to bytes */
+ uint64_t memlimit_in_bytes = (((uint64_t)p->p_memstat_memlimit) * 1024ULL * 1024ULL); /* convert MB to bytes */
success = (footprint_in_bytes <= memlimit_in_bytes);
} else {
success = (memorystatus_avail_pages_below_pressure() == FALSE);
}
if (success) {
-
memorystatus_purge_before_jetsam_success++;
os_log_with_startup_serial(OS_LOG_DEFAULT, "memorystatus: purged %llu pages from pid %d [%s] and avoided %s\n",
- num_pages_purged, aPid, (*p->p_name ? p->p_name : "unknown"), memorystatus_kill_cause_name[cause]);
+ num_pages_purged, aPid, (*p->p_name ? p->p_name : "unknown"), memorystatus_kill_cause_name[cause]);
*killed = FALSE;
#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
MEMORYSTATUS_DEBUG(1, "jetsam: %s pid %d [%s] - %lld Mb > 1 (%d Mb)\n",
- (memorystatus_jetsam_policy & kPolicyDiagnoseActive) ? "suspending": "killing",
- aPid, (*p->p_name ? p->p_name : "unknown"),
- (footprint_in_bytes / (1024ULL * 1024ULL)), /* converted bytes to MB */
- p->p_memstat_memlimit);
+ (memorystatus_jetsam_policy & kPolicyDiagnoseActive) ? "suspending": "killing",
+ aPid, (*p->p_name ? p->p_name : "unknown"),
+ (footprint_in_bytes / (1024ULL * 1024ULL)), /* converted bytes to MB */
+ p->p_memstat_memlimit);
#endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
killtime = mach_absolute_time();
if (memorystatus_jetsam_policy & kPolicyDiagnoseActive) {
if (cause == kMemorystatusKilledHiwat) {
MEMORYSTATUS_DEBUG(1, "jetsam: suspending pid %d [%s] for diagnosis - memorystatus_available_pages: %d\n",
- aPid, (*p->p_name ? p->p_name: "(unknown)"), memorystatus_available_pages);
+ aPid, (*p->p_name ? p->p_name: "(unknown)"), memorystatus_available_pages);
} else {
int activeProcess = p->p_memstat_state & P_MEMSTAT_FOREGROUND;
if (activeProcess) {
MEMORYSTATUS_DEBUG(1, "jetsam: suspending pid %d [%s] (active) for diagnosis - memorystatus_available_pages: %d\n",
- aPid, (*p->p_name ? p->p_name: "(unknown)"), memorystatus_available_pages);
+ aPid, (*p->p_name ? p->p_name: "(unknown)"), memorystatus_available_pages);
- if (memorystatus_jetsam_policy & kPolicyDiagnoseFirst) {
- jetsam_diagnostic_suspended_one_active_proc = 1;
- printf("jetsam: returning after suspending first active proc - %d\n", aPid);
- }
+ if (memorystatus_jetsam_policy & kPolicyDiagnoseFirst) {
+ jetsam_diagnostic_suspended_one_active_proc = 1;
+ printf("jetsam: returning after suspending first active proc - %d\n", aPid);
+ }
}
}
}
os_log_with_startup_serial(OS_LOG_DEFAULT, "%lu.%03d memorystatus: %s pid %d [%s] (%s %d) - memorystatus_available_pages: %llu\n",
- (unsigned long)tv_sec, tv_msec, kill_reason_string,
- aPid, (*p->p_name ? p->p_name : "unknown"),
- memorystatus_kill_cause_name[cause], aPid_ep, (uint64_t)memorystatus_available_pages);
+ (unsigned long)tv_sec, tv_msec, kill_reason_string,
+ aPid, (*p->p_name ? p->p_name : "unknown"),
+ memorystatus_kill_cause_name[cause], aPid_ep, (uint64_t)memorystatus_available_pages);
/*
* memorystatus_do_kill drops a reference, so take another one so we can
*/
static boolean_t
memorystatus_kill_top_process(boolean_t any, boolean_t sort_flag, uint32_t cause, os_reason_t jetsam_reason,
- int32_t *priority, uint32_t *errors)
+ int32_t *priority, uint32_t *errors)
{
pid_t aPid;
proc_t p = PROC_NULL, next_p = PROC_NULL;
boolean_t new_snapshot = FALSE, force_new_snapshot = FALSE, killed = FALSE, freed_mem = FALSE;
unsigned int i = 0;
uint32_t aPid_ep;
- int32_t local_max_kill_prio = JETSAM_PRIORITY_IDLE;
+ int32_t local_max_kill_prio = JETSAM_PRIORITY_IDLE;
#ifndef CONFIG_FREEZE
#pragma unused(any)
#endif
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM) | DBG_FUNC_START,
- memorystatus_available_pages, 0, 0, 0, 0);
+ memorystatus_available_pages, 0, 0, 0, 0);
#if CONFIG_JETSAM
#if DEVELOPMENT || DEBUG
int procSuspendedForDiagnosis;
#endif /* DEVELOPMENT || DEBUG */
-
+
p = next_p;
next_p = memorystatus_get_next_proc_locked(&i, p, TRUE);
-
+
#if DEVELOPMENT || DEBUG
procSuspendedForDiagnosis = p->p_memstat_state & P_MEMSTAT_DIAG_SUSPENDED;
#endif /* DEVELOPMENT || DEBUG */
-
+
aPid = p->p_pid;
aPid_ep = p->p_memstat_effectivepriority;
if (p->p_memstat_state & (P_MEMSTAT_ERROR | P_MEMSTAT_TERMINATED)) {
continue; /* with lock held */
}
-
+
#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
if ((memorystatus_jetsam_policy & kPolicyDiagnoseActive) && procSuspendedForDiagnosis) {
printf("jetsam: continuing after ignoring proc suspended already for diagnosis - %d\n", aPid);
}
#endif /* CONFIG_JETSAM && (DEVELOPMENT || DEBUG) */
- if (cause == kMemorystatusKilledVnodes)
- {
+ if (cause == kMemorystatusKilledVnodes) {
/*
* If the system runs out of vnodes, we systematically jetsam
* processes in hopes of stumbling onto a vnode gain that helps
} else {
skip = TRUE;
}
-
+
if (skip) {
continue;
} else
* acquisition of the proc lock.
*/
p->p_memstat_state |= P_MEMSTAT_TERMINATED;
-
} else {
/*
* We need to restart the search again because
continue;
}
- /*
- * Capture a snapshot if none exists and:
+ /*
+ * Capture a snapshot if none exists and:
* - we are forcing a new snapshot creation, either because:
- * - on a particular platform we need these snapshots every time, OR
+ * - on a particular platform we need these snapshots every time, OR
* - a boot-arg/embedded device tree property has been set.
- * - priority was not requested (this is something other than an ambient kill)
- * - the priority was requested *and* the targeted process is not at idle priority
- */
- if ((memorystatus_jetsam_snapshot_count == 0) &&
+ * - priority was not requested (this is something other than an ambient kill)
+ * - the priority was requested *and* the targeted process is not at idle priority
+ */
+ if ((memorystatus_jetsam_snapshot_count == 0) &&
(force_new_snapshot || memorystatus_idle_snapshot || ((!priority) || (priority && (aPid_ep != JETSAM_PRIORITY_IDLE))))) {
- memorystatus_init_jetsam_snapshot_locked(NULL,0);
- new_snapshot = TRUE;
- }
+ memorystatus_init_jetsam_snapshot_locked(NULL, 0);
+ new_snapshot = TRUE;
+ }
proc_list_unlock();
proc_rele(p);
goto exit;
}
-
+
/*
* Failure - first unwind the state,
* then fall through to restart the search.
next_p = memorystatus_get_first_proc_locked(&i, TRUE);
}
}
-
+
proc_list_unlock();
-
+
exit:
os_reason_free(jetsam_reason);
memorystatus_jetsam_snapshot->entry_count = memorystatus_jetsam_snapshot_count = 0;
proc_list_unlock();
}
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM) | DBG_FUNC_END,
- memorystatus_available_pages, killed ? aPid : 0, 0, 0, 0);
+ memorystatus_available_pages, killed ? aPid : 0, 0, 0, 0);
return killed;
}
/*
- * Jetsam aggressively
+ * Jetsam aggressively
*/
static boolean_t
memorystatus_kill_top_process_aggressive(uint32_t cause, int aggr_count,
- int32_t priority_max, uint32_t *errors)
+ int32_t priority_max, uint32_t *errors)
{
pid_t aPid;
proc_t p = PROC_NULL, next_p = PROC_NULL;
int32_t aPid_ep = 0;
unsigned int memorystatus_level_snapshot = 0;
uint64_t killtime = 0;
- clock_sec_t tv_sec;
- clock_usec_t tv_usec;
- uint32_t tv_msec;
+ clock_sec_t tv_sec;
+ clock_usec_t tv_usec;
+ uint32_t tv_msec;
os_reason_t jetsam_reason = OS_REASON_NULL;
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM) | DBG_FUNC_START,
- memorystatus_available_pages, priority_max, 0, 0, 0);
+ memorystatus_available_pages, priority_max, 0, 0, 0);
memorystatus_sort_bucket(JETSAM_PRIORITY_FOREGROUND, JETSAM_SORT_DEFAULT);
if (((next_p->p_listflag & P_LIST_EXITED) != 0) ||
((unsigned int)(next_p->p_memstat_effectivepriority) != i)) {
-
/*
* We have raced with next_p running on another core.
* It may be exiting or it may have moved to a different
*/
MEMORYSTATUS_DEBUG(1, "memorystatus: aggressive%d: rewinding band %d, %s(%d) moved or exiting.\n",
- aggr_count, i, (*next_p->p_name ? next_p->p_name : "unknown"), next_p->p_pid);
+ aggr_count, i, (*next_p->p_name ? next_p->p_name : "unknown"), next_p->p_pid);
next_p = memorystatus_get_first_proc_locked(&i, TRUE);
continue;
next_p = memorystatus_get_next_proc_locked(&i, p, TRUE);
if (p->p_memstat_effectivepriority > priority_max) {
- /*
+ /*
* Bail out of this killing spree if we have
* reached beyond the priority_max jetsam band.
- * That is, we kill up to and through the
+ * That is, we kill up to and through the
* priority_max jetsam band.
*/
proc_list_unlock();
goto exit;
}
-
+
#if DEVELOPMENT || DEBUG
activeProcess = p->p_memstat_state & P_MEMSTAT_FOREGROUND;
procSuspendedForDiagnosis = p->p_memstat_state & P_MEMSTAT_DIAG_SUSPENDED;
#endif /* DEVELOPMENT || DEBUG */
-
+
aPid = p->p_pid;
aPid_ep = p->p_memstat_effectivepriority;
if (p->p_memstat_state & (P_MEMSTAT_ERROR | P_MEMSTAT_TERMINATED)) {
continue;
}
-
+
#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
if ((memorystatus_jetsam_policy & kPolicyDiagnoseActive) && procSuspendedForDiagnosis) {
printf("jetsam: continuing after ignoring proc suspended already for diagnosis - %d\n", aPid);
* Capture a snapshot if none exists.
*/
if (memorystatus_jetsam_snapshot_count == 0) {
- memorystatus_init_jetsam_snapshot_locked(NULL,0);
+ memorystatus_init_jetsam_snapshot_locked(NULL, 0);
new_snapshot = TRUE;
}
-
- /*
+
+ /*
* Mark as terminated so that if exit1() indicates success, but the process (for example)
- * is blocked in task_exception_notify(), it'll be skipped if encountered again - see
- * <rdar://problem/13553476>. This is cheaper than examining P_LEXIT, which requires the
+ * is blocked in task_exception_notify(), it'll be skipped if encountered again - see
+ * <rdar://problem/13553476>. This is cheaper than examining P_LEXIT, which requires the
* acquisition of the proc lock.
*/
p->p_memstat_state |= P_MEMSTAT_TERMINATED;
killtime = mach_absolute_time();
absolutetime_to_microtime(killtime, &tv_sec, &tv_usec);
tv_msec = tv_usec / 1000;
-
+
/* Shift queue, update stats */
memorystatus_update_jetsam_snapshot_entry_locked(p, cause, killtime);
while (next_p && (proc_ref_locked(next_p) != next_p)) {
proc_t temp_p;
- /*
- * We must have raced with next_p exiting on another core.
- * Recover by getting the next eligible process in the band.
- */
+ /*
+ * We must have raced with next_p exiting on another core.
+ * Recover by getting the next eligible process in the band.
+ */
MEMORYSTATUS_DEBUG(1, "memorystatus: aggressive%d: skipping %d [%s] (exiting?)\n",
- aggr_count, next_p->p_pid, (*next_p->p_name ? next_p->p_name : "(unknown)"));
+ aggr_count, next_p->p_pid, (*next_p->p_name ? next_p->p_name : "(unknown)"));
temp_p = next_p;
next_p = memorystatus_get_next_proc_locked(&i, temp_p, TRUE);
- }
+ }
}
proc_list_unlock();
printf("%lu.%03d memorystatus: %s%d pid %d [%s] (%s %d) - memorystatus_available_pages: %llu\n",
- (unsigned long)tv_sec, tv_msec,
- ((aPid_ep == JETSAM_PRIORITY_IDLE) ? "killing_idle_process_aggressive" : "killing_top_process_aggressive"),
- aggr_count, aPid, (*p->p_name ? p->p_name : "unknown"),
- memorystatus_kill_cause_name[cause], aPid_ep, (uint64_t)memorystatus_available_pages);
+ (unsigned long)tv_sec, tv_msec,
+ ((aPid_ep == JETSAM_PRIORITY_IDLE) ? "killing_idle_process_aggressive" : "killing_top_process_aggressive"),
+ aggr_count, aPid, (*p->p_name ? p->p_name : "unknown"),
+ memorystatus_kill_cause_name[cause], aPid_ep, (uint64_t)memorystatus_available_pages);
memorystatus_level_snapshot = memorystatus_level;
p = NULL;
killed = FALSE;
- /*
+ /*
* Continue the killing spree.
*/
proc_list_lock();
continue;
}
-
+
/*
* Failure - first unwind the state,
* then fall through to restart the search.
* We might have raced with "p" exiting on another core, resulting in no
* ref on "p". Or, we may have failed to kill "p".
*
- * Either way, we fall thru to here, leaving the proc in the
+ * Either way, we fall thru to here, leaving the proc in the
* P_MEMSTAT_TERMINATED or P_MEMSTAT_ERROR state.
*
* And, we hold the the proc_list_lock at this point.
next_p = memorystatus_get_first_proc_locked(&i, TRUE);
}
-
+
proc_list_unlock();
-
+
exit:
os_reason_free(jetsam_reason);
/* Clear snapshot if freshly captured and no target was found */
if (new_snapshot && (kill_count == 0)) {
- proc_list_lock();
- memorystatus_jetsam_snapshot->entry_count = memorystatus_jetsam_snapshot_count = 0;
- proc_list_unlock();
+ proc_list_lock();
+ memorystatus_jetsam_snapshot->entry_count = memorystatus_jetsam_snapshot_count = 0;
+ proc_list_unlock();
}
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM) | DBG_FUNC_END,
- memorystatus_available_pages, killed ? aPid : 0, kill_count, 0, 0);
+ memorystatus_available_pages, killed ? aPid : 0, kill_count, 0, 0);
if (kill_count > 0) {
- return(TRUE);
- }
- else {
- return(FALSE);
+ return TRUE;
+ } else {
+ return FALSE;
}
}
uint32_t aPid_ep;
os_reason_t jetsam_reason = OS_REASON_NULL;
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM_HIWAT) | DBG_FUNC_START,
- memorystatus_available_pages, 0, 0, 0, 0);
-
+ memorystatus_available_pages, 0, 0, 0, 0);
+
jetsam_reason = os_reason_create(OS_REASON_JETSAM, JETSAM_REASON_MEMORY_HIGHWATER);
if (jetsam_reason == OS_REASON_NULL) {
printf("memorystatus_kill_hiwat_proc: failed to allocate exit reason\n");
}
proc_list_lock();
-
+
next_p = memorystatus_get_first_proc_locked(&i, TRUE);
while (next_p) {
uint64_t footprint_in_bytes = 0;
p = next_p;
next_p = memorystatus_get_next_proc_locked(&i, p, TRUE);
-
+
aPid = p->p_pid;
aPid_ep = p->p_memstat_effectivepriority;
-
+
if (p->p_memstat_state & (P_MEMSTAT_ERROR | P_MEMSTAT_TERMINATED)) {
continue;
}
-
+
/* skip if no limit set */
if (p->p_memstat_memlimit <= 0) {
continue;
}
footprint_in_bytes = get_task_phys_footprint(p->task);
- memlimit_in_bytes = (((uint64_t)p->p_memstat_memlimit) * 1024ULL * 1024ULL); /* convert MB to bytes */
+ memlimit_in_bytes = (((uint64_t)p->p_memstat_memlimit) * 1024ULL * 1024ULL); /* convert MB to bytes */
skip = (footprint_in_bytes <= memlimit_in_bytes);
#if CONFIG_JETSAM && (DEVELOPMENT || DEBUG)
skip = TRUE;
} else {
skip = FALSE;
- }
+ }
}
#endif
if (skip) {
continue;
} else {
-
if (memorystatus_jetsam_snapshot_count == 0) {
- memorystatus_init_jetsam_snapshot_locked(NULL,0);
+ memorystatus_init_jetsam_snapshot_locked(NULL, 0);
new_snapshot = TRUE;
}
-
+
if (proc_ref_locked(p) == p) {
/*
* Mark as terminated so that if exit1() indicates success, but the process (for example)
next_p = memorystatus_get_first_proc_locked(&i, TRUE);
continue;
}
-
+
freed_mem = memorystatus_kill_proc(p, kMemorystatusKilledHiwat, jetsam_reason, &killed); /* purged and/or killed 'p' */
/* Success? */
next_p = memorystatus_get_first_proc_locked(&i, TRUE);
}
}
-
+
proc_list_unlock();
-
+
exit:
os_reason_free(jetsam_reason);
memorystatus_jetsam_snapshot->entry_count = memorystatus_jetsam_snapshot_count = 0;
proc_list_unlock();
}
-
- KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM_HIWAT) | DBG_FUNC_END,
- memorystatus_available_pages, killed ? aPid : 0, 0, 0, 0);
+
+ KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM_HIWAT) | DBG_FUNC_END,
+ memorystatus_available_pages, killed ? aPid : 0, 0, 0, 0);
return killed;
}
int kill_count = 0;
uint32_t aPid_ep;
uint64_t killtime = 0;
- clock_sec_t tv_sec;
- clock_usec_t tv_usec;
- uint32_t tv_msec;
+ clock_sec_t tv_sec;
+ clock_usec_t tv_usec;
+ uint32_t tv_msec;
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM) | DBG_FUNC_START,
- memorystatus_available_pages, 0, 0, 0, 0);
+ memorystatus_available_pages, 0, 0, 0, 0);
#if CONFIG_FREEZE
boolean_t consider_frozen_only = FALSE;
next_p = memorystatus_get_first_proc_locked(&band, FALSE);
while (next_p) {
-
p = next_p;
next_p = memorystatus_get_next_proc_locked(&band, p, FALSE);
}
#if CONFIG_FREEZE
- if (consider_frozen_only && ! (p->p_memstat_state & P_MEMSTAT_FROZEN)) {
+ if (consider_frozen_only && !(p->p_memstat_state & P_MEMSTAT_FROZEN)) {
continue;
}
#if DEVELOPMENT || DEBUG
MEMORYSTATUS_DEBUG(1, "jetsam: elevated%d process pid %d [%s] - memorystatus_available_pages: %d\n",
- aggr_count,
- aPid, (*p->p_name ? p->p_name : "unknown"),
- memorystatus_available_pages);
+ aggr_count,
+ aPid, (*p->p_name ? p->p_name : "unknown"),
+ memorystatus_available_pages);
#endif /* DEVELOPMENT || DEBUG */
if (memorystatus_jetsam_snapshot_count == 0) {
- memorystatus_init_jetsam_snapshot_locked(NULL,0);
+ memorystatus_init_jetsam_snapshot_locked(NULL, 0);
new_snapshot = TRUE;
}
memorystatus_update_jetsam_snapshot_entry_locked(p, cause, killtime);
if (proc_ref_locked(p) == p) {
-
proc_list_unlock();
- os_log_with_startup_serial(OS_LOG_DEFAULT, "%lu.%03d memorystatus: killing_top_process_elevated%d pid %d [%s] (%s %d) - memorystatus_available_pages: %llu\n",
- (unsigned long)tv_sec, tv_msec,
- aggr_count,
- aPid, (*p->p_name ? p->p_name : "unknown"),
- memorystatus_kill_cause_name[cause], aPid_ep, (uint64_t)memorystatus_available_pages);
+ os_log_with_startup_serial(OS_LOG_DEFAULT, "%lu.%03d memorystatus: killing_top_process_elevated%d pid %d [%s] (%s %d) - memorystatus_available_pages: %llu\n",
+ (unsigned long)tv_sec, tv_msec,
+ aggr_count,
+ aPid, (*p->p_name ? p->p_name : "unknown"),
+ memorystatus_kill_cause_name[cause], aPid_ep, (uint64_t)memorystatus_available_pages);
/*
* memorystatus_do_kill drops a reference, so take another one so we can
}
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_JETSAM) | DBG_FUNC_END,
- memorystatus_available_pages, killed ? aPid : 0, kill_count, 0, 0);
+ memorystatus_available_pages, killed ? aPid : 0, kill_count, 0, 0);
- return (killed);
+ return killed;
}
-static boolean_t
-memorystatus_kill_process_async(pid_t victim_pid, uint32_t cause) {
+static boolean_t
+memorystatus_kill_process_async(pid_t victim_pid, uint32_t cause)
+{
/*
* TODO: allow a general async path
*
* add the appropriate exit reason code mapping.
*/
if ((victim_pid != -1) ||
- (cause != kMemorystatusKilledVMPageShortage &&
- cause != kMemorystatusKilledVMCompressorThrashing &&
- cause != kMemorystatusKilledVMCompressorSpaceShortage &&
- cause != kMemorystatusKilledFCThrashing &&
- cause != kMemorystatusKilledZoneMapExhaustion)) {
+ (cause != kMemorystatusKilledVMPageShortage &&
+ cause != kMemorystatusKilledVMCompressorThrashing &&
+ cause != kMemorystatusKilledVMCompressorSpaceShortage &&
+ cause != kMemorystatusKilledFCThrashing &&
+ cause != kMemorystatusKilledZoneMapExhaustion)) {
return FALSE;
}
-
+
kill_under_pressure_cause = cause;
memorystatus_thread_wake();
return TRUE;
}
boolean_t
-memorystatus_kill_on_VM_compressor_space_shortage(boolean_t async) {
+memorystatus_kill_on_VM_compressor_space_shortage(boolean_t async)
+{
if (async) {
return memorystatus_kill_process_async(-1, kMemorystatusKilledVMCompressorSpaceShortage);
} else {
#if CONFIG_JETSAM
boolean_t
-memorystatus_kill_on_VM_compressor_thrashing(boolean_t async) {
+memorystatus_kill_on_VM_compressor_thrashing(boolean_t async)
+{
if (async) {
return memorystatus_kill_process_async(-1, kMemorystatusKilledVMCompressorThrashing);
} else {
}
}
-boolean_t
-memorystatus_kill_on_VM_page_shortage(boolean_t async) {
+boolean_t
+memorystatus_kill_on_VM_page_shortage(boolean_t async)
+{
if (async) {
return memorystatus_kill_process_async(-1, kMemorystatusKilledVMPageShortage);
} else {
}
boolean_t
-memorystatus_kill_on_FC_thrashing(boolean_t async) {
-
-
+memorystatus_kill_on_FC_thrashing(boolean_t async)
+{
if (async) {
return memorystatus_kill_process_async(-1, kMemorystatusKilledFCThrashing);
} else {
}
}
-boolean_t
-memorystatus_kill_on_vnode_limit(void) {
+boolean_t
+memorystatus_kill_on_vnode_limit(void)
+{
os_reason_t jetsam_reason = os_reason_create(OS_REASON_JETSAM, JETSAM_REASON_VNODE);
if (jetsam_reason == OS_REASON_NULL) {
printf("memorystatus_kill_on_vnode_limit: failed to allocate jetsam reason\n");
#endif /* CONFIG_JETSAM */
boolean_t
-memorystatus_kill_on_zone_map_exhaustion(pid_t pid) {
+memorystatus_kill_on_zone_map_exhaustion(pid_t pid)
+{
boolean_t res = FALSE;
if (pid == -1) {
res = memorystatus_kill_process_async(-1, kMemorystatusKilledZoneMapExhaustion);
result = kernel_thread_start(memorystatus_freeze_thread, NULL, &thread);
if (result == KERN_SUCCESS) {
-
proc_set_thread_policy(thread, TASK_POLICY_INTERNAL, TASK_POLICY_IO, THROTTLE_LEVEL_COMPRESSOR_TIER2);
proc_set_thread_policy(thread, TASK_POLICY_INTERNAL, TASK_POLICY_PASSIVE_IO, TASK_POLICY_ENABLE);
thread_set_thread_name(thread, "VM_freezer");
state = p->p_memstat_state;
if ((state & (P_MEMSTAT_TERMINATED | P_MEMSTAT_LOCKED | P_MEMSTAT_FREEZE_DISABLED | P_MEMSTAT_FREEZE_IGNORE)) ||
- !(state & P_MEMSTAT_SUSPENDED)) {
+ !(state & P_MEMSTAT_SUSPENDED)) {
goto out;
}
entry_count = (memorystatus_global_probabilities_size / sizeof(memorystatus_internal_probabilities_t));
if (entry_count) {
-
- for (i=0; i < entry_count; i++ ) {
+ for (i = 0; i < entry_count; i++) {
if (strncmp(memorystatus_global_probabilities_table[i].proc_name,
- p->p_name,
- MAXCOMLEN + 1) == 0) {
-
+ p->p_name,
+ MAXCOMLEN + 1) == 0) {
probability_of_use = memorystatus_global_probabilities_table[i].use_probability;
break;
}
int ret = EINVAL;
pid_t aPid = 0;
boolean_t memorystatus_freeze_swap_low = FALSE;
- int freezer_error_code = 0;
+ int freezer_error_code = 0;
lck_mtx_lock(&freezer_mutex);
}
if (VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
-
max_pages = MIN(memorystatus_freeze_pages_max, memorystatus_freeze_budget_pages_remaining);
-
} else {
/*
* We only have the compressor without any swap.
proc_list_unlock();
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_FREEZE) | DBG_FUNC_START,
- memorystatus_available_pages, 0, 0, 0, 0);
+ memorystatus_available_pages, 0, 0, 0, 0);
ret = task_freeze(p->task, &purgeable, &wired, &clean, &dirty, max_pages, &shared, &freezer_error_code, FALSE /* eval only */);
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_FREEZE) | DBG_FUNC_END,
- memorystatus_available_pages, aPid, 0, 0, 0);
+ memorystatus_available_pages, aPid, 0, 0, 0);
DTRACE_MEMORYSTATUS6(memorystatus_freeze, proc_t, p, unsigned int, memorystatus_available_pages, boolean_t, purgeable, unsigned int, wired, uint32_t, clean, uint32_t, dirty);
MEMORYSTATUS_DEBUG(1, "memorystatus_freeze_process_sync: task_freeze %s for pid %d [%s] - "
- "memorystatus_pages: %d, purgeable: %d, wired: %d, clean: %d, dirty: %d, max_pages %d, shared %d\n",
- (ret == KERN_SUCCESS) ? "SUCCEEDED" : "FAILED", aPid, (*p->p_name ? p->p_name : "(unknown)"),
- memorystatus_available_pages, purgeable, wired, clean, dirty, max_pages, shared);
+ "memorystatus_pages: %d, purgeable: %d, wired: %d, clean: %d, dirty: %d, max_pages %d, shared %d\n",
+ (ret == KERN_SUCCESS) ? "SUCCEEDED" : "FAILED", aPid, (*p->p_name ? p->p_name : "(unknown)"),
+ memorystatus_available_pages, purgeable, wired, clean, dirty, max_pages, shared);
proc_list_lock();
if (ret == KERN_SUCCESS) {
-
os_log_with_startup_serial(OS_LOG_DEFAULT, "memorystatus: freezing (specific) pid %d [%s]...done",
- aPid, (*p->p_name ? p->p_name : "unknown"));
+ aPid, (*p->p_name ? p->p_name : "unknown"));
memorystatus_freeze_entry_t data = { aPid, TRUE, dirty };
memorystatus_send_note(kMemorystatusFreezeNote, &data, sizeof(data));
if (VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
-
ret = memorystatus_update_inactive_jetsam_priority_band(p->p_pid, MEMORYSTATUS_CMD_ELEVATED_INACTIVEJETSAMPRIORITY_ENABLE,
- memorystatus_freeze_jetsam_band, TRUE);
+ memorystatus_freeze_jetsam_band, TRUE);
if (ret) {
printf("Elevating the frozen process failed with %d\n", ret);
}
os_log_with_startup_serial(OS_LOG_DEFAULT, "memorystatus: freezing (specific) pid %d [%s]...skipped (%s)",
- aPid, (*p->p_name ? p->p_name : "unknown"), reason);
+ aPid, (*p->p_name ? p->p_name : "unknown"), reason);
p->p_memstat_state |= P_MEMSTAT_FREEZE_IGNORE;
}
band = (unsigned int) memorystatus_freeze_jetsam_band;
}
- freeze_process:
+freeze_process:
next_p = memorystatus_get_first_proc_locked(&band, FALSE);
while (next_p) {
kern_return_t kr;
uint32_t purgeable, wired, clean, dirty, shared;
uint32_t max_pages = 0;
- int freezer_error_code = 0;
-
+ int freezer_error_code = 0;
+
p = next_p;
next_p = memorystatus_get_next_proc_locked(&band, p, FALSE);
p->p_memstat_state &= ~P_MEMSTAT_REFREEZE_ELIGIBLE;
memorystatus_refreeze_eligible_count--;
-
} else {
if (memorystatus_is_process_eligible_for_freeze(p) == FALSE) {
continue; // with lock held
*/
max_pages = MIN(memorystatus_freeze_pages_max, memorystatus_freeze_budget_pages_remaining);
-
} else {
/*
* We only have the compressor pool.
*/
max_pages = UINT32_MAX - 1;
}
-
+
/* Mark as locked temporarily to avoid kill */
p->p_memstat_state |= P_MEMSTAT_LOCKED;
proc_list_unlock();
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_FREEZE) | DBG_FUNC_START,
- memorystatus_available_pages, 0, 0, 0, 0);
+ memorystatus_available_pages, 0, 0, 0, 0);
kr = task_freeze(p->task, &purgeable, &wired, &clean, &dirty, max_pages, &shared, &freezer_error_code, FALSE /* eval only */);
-
+
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_FREEZE) | DBG_FUNC_END,
- memorystatus_available_pages, aPid, 0, 0, 0);
+ memorystatus_available_pages, aPid, 0, 0, 0);
MEMORYSTATUS_DEBUG(1, "memorystatus_freeze_top_process: task_freeze %s for pid %d [%s] - "
- "memorystatus_pages: %d, purgeable: %d, wired: %d, clean: %d, dirty: %d, max_pages %d, shared %d\n",
- (kr == KERN_SUCCESS) ? "SUCCEEDED" : "FAILED", aPid, (*p->p_name ? p->p_name : "(unknown)"),
- memorystatus_available_pages, purgeable, wired, clean, dirty, max_pages, shared);
-
+ "memorystatus_pages: %d, purgeable: %d, wired: %d, clean: %d, dirty: %d, max_pages %d, shared %d\n",
+ (kr == KERN_SUCCESS) ? "SUCCEEDED" : "FAILED", aPid, (*p->p_name ? p->p_name : "(unknown)"),
+ memorystatus_available_pages, purgeable, wired, clean, dirty, max_pages, shared);
+
proc_list_lock();
-
+
/* Success? */
if (KERN_SUCCESS == kr) {
-
if (refreeze_processes) {
os_log_with_startup_serial(OS_LOG_DEFAULT, "memorystatus: Refreezing (general) pid %d [%s]...done",
- aPid, (*p->p_name ? p->p_name : "unknown"));
+ aPid, (*p->p_name ? p->p_name : "unknown"));
} else {
os_log_with_startup_serial(OS_LOG_DEFAULT, "memorystatus: freezing (general) pid %d [%s]...done",
- aPid, (*p->p_name ? p->p_name : "unknown"));
+ aPid, (*p->p_name ? p->p_name : "unknown"));
}
memorystatus_freeze_entry_t data = { aPid, TRUE, dirty };
-
+
p->p_memstat_freeze_sharedanon_pages += shared;
memorystatus_frozen_shared_mb += shared;
memorystatus_send_note(kMemorystatusFreezeNote, &data, sizeof(data));
if (VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
-
ret = memorystatus_update_inactive_jetsam_priority_band(p->p_pid, MEMORYSTATUS_CMD_ELEVATED_INACTIVEJETSAMPRIORITY_ENABLE, memorystatus_freeze_jetsam_band, TRUE);
if (ret) {
break;
} else {
-
p->p_memstat_state &= ~P_MEMSTAT_LOCKED;
if (refreeze_processes == TRUE) {
}
os_log_with_startup_serial(OS_LOG_DEFAULT, "memorystatus: freezing (general) pid %d [%s]...skipped (%s)",
- aPid, (*p->p_name ? p->p_name : "unknown"), reason);
+ aPid, (*p->p_name ? p->p_name : "unknown"), reason);
if (vm_compressor_low_on_space() || vm_swap_low_on_space()) {
break;
goto freeze_process;
}
-
+
proc_list_unlock();
-
+
return ret;
}
-static inline boolean_t
-memorystatus_can_freeze_processes(void)
+static inline boolean_t
+memorystatus_can_freeze_processes(void)
{
boolean_t ret;
-
+
proc_list_lock();
-
- if (memorystatus_suspended_count) {
+ if (memorystatus_suspended_count) {
memorystatus_freeze_suspended_threshold = MIN(memorystatus_freeze_suspended_threshold, FREEZE_SUSPENDED_THRESHOLD_DEFAULT);
-
+
if ((memorystatus_suspended_count - memorystatus_frozen_count) > memorystatus_freeze_suspended_threshold) {
ret = TRUE;
} else {
} else {
ret = FALSE;
}
-
+
proc_list_unlock();
-
+
return ret;
}
-static boolean_t
+static boolean_t
memorystatus_can_freeze(boolean_t *memorystatus_freeze_swap_low)
{
boolean_t can_freeze = TRUE;
/* Only freeze if we're sufficiently low on memory; this holds off freeze right
- after boot, and is generally is a no-op once we've reached steady state. */
+ * after boot, and is generally is a no-op once we've reached steady state. */
if (memorystatus_available_pages > memorystatus_freeze_threshold) {
return FALSE;
}
-
+
/* Check minimum suspended process threshold. */
if (!memorystatus_can_freeze_processes()) {
return FALSE;
}
assert(VM_CONFIG_COMPRESSOR_IS_PRESENT);
- if ( !VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
+ if (!VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) {
/*
* In-core compressor used for freezing WITHOUT on-disk swap support.
*/
}
can_freeze = FALSE;
-
} else {
if (*memorystatus_freeze_swap_low) {
*memorystatus_freeze_swap_low = FALSE;
can_freeze = FALSE;
}
-
}
-
+
return can_freeze;
}
next_p = memorystatus_get_first_proc_locked(&band, FALSE);
while (next_p) {
-
p = next_p;
next_p = memorystatus_get_next_proc_locked(&band, p, FALSE);
memorystatus_update_priority_locked(p, JETSAM_PRIORITY_IDLE, TRUE, TRUE);
#if DEVELOPMENT || DEBUG
os_log_with_startup_serial(OS_LOG_DEFAULT, "memorystatus_demote_frozen_process pid %d [%s]",
- p->p_pid, (*p->p_name ? p->p_name : "unknown"));
+ p->p_pid, (*p->p_name ? p->p_name : "unknown"));
#endif /* DEVELOPMENT || DEBUG */
/*
struct throttle_interval_t *interval = NULL;
if (memorystatus_freeze_degradation == TRUE) {
-
interval = degraded_throttle_window;
if (CMP_MACH_TIMESPEC(&ts, &interval->ts) >= 0) {
memorystatus_freeze_degradation = FALSE;
interval->pageouts = 0;
interval->max_pageouts = 0;
-
} else {
*budget_pages_allowed = interval->max_pageouts - interval->pageouts;
}
*budget_pages_allowed = interval->max_pageouts;
memorystatus_demote_frozen_processes();
-
} else {
/*
* Current throttle window.
#if DEVELOPMENT || DEBUG
/*
- * This can only happen in the INTERNAL configs because we allow modifying the daily budget for testing.
- */
+ * This can only happen in the INTERNAL configs because we allow modifying the daily budget for testing.
+ */
if (freeze_daily_pageouts_max > interval->max_pageouts) {
/*
#endif /* DEVELOPMENT || DEBUG */
if (memorystatus_freeze_degradation == FALSE) {
-
if (interval->pageouts >= interval->max_pageouts) {
-
*budget_pages_allowed = 0;
-
} else {
-
int budget_left = interval->max_pageouts - interval->pageouts;
int budget_threshold = (freeze_daily_pageouts_max * FREEZE_DEGRADATION_BUDGET_THRESHOLD) / 100;
- mach_timespec_t time_left = {0,0};
+ mach_timespec_t time_left = {0, 0};
time_left.tv_sec = interval->ts.tv_sec;
time_left.tv_nsec = 0;
SUB_MACH_TIMESPEC(&time_left, &ts);
if (budget_left <= budget_threshold) {
-
/*
* For the current normal window, calculate how much we would pageout in a DEGRADED_WINDOW_MINS duration.
* And also calculate what we would pageout for the same DEGRADED_WINDOW_MINS duration if we had the full
*/
if (current_budget_rate_allowed < normal_budget_rate_allowed) {
-
memorystatus_freeze_degradation = TRUE;
degraded_throttle_window->max_pageouts = current_budget_rate_allowed;
degraded_throttle_window->pageouts = 0;
}
MEMORYSTATUS_DEBUG(1, "memorystatus_freeze_update_throttle_interval: throttle updated - %d frozen (%d max) within %dm; %dm remaining; throttle %s\n",
- interval->pageouts, interval->max_pageouts, interval->mins, (interval->ts.tv_sec - ts->tv_sec) / 60,
- interval->throttle ? "on" : "off");
+ interval->pageouts, interval->max_pageouts, interval->mins, (interval->ts.tv_sec - ts->tv_sec) / 60,
+ interval->throttle ? "on" : "off");
}
static void
lck_mtx_lock(&freezer_mutex);
if (memorystatus_freeze_enabled) {
-
if ((memorystatus_frozen_count < memorystatus_frozen_processes_max) ||
(memorystatus_refreeze_eligible_count >= MIN_THAW_REFREEZE_THRESHOLD)) {
-
if (memorystatus_can_freeze(&memorystatus_freeze_swap_low)) {
-
/* Only freeze if we've not exceeded our pageout budgets.*/
memorystatus_freeze_update_throttle(&memorystatus_freeze_budget_pages_remaining);
assert_wait((event_t) &memorystatus_freeze_wakeup, THREAD_UNINT);
lck_mtx_unlock(&freezer_mutex);
- thread_block((thread_continue_t) memorystatus_freeze_thread);
+ thread_block((thread_continue_t) memorystatus_freeze_thread);
}
static boolean_t
return 0;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_do_fastwake_warmup_all, CTLTYPE_INT|CTLFLAG_WR|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_do_fastwake_warmup_all, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_memorystatus_do_fastwake_warmup_all, "I", "");
#endif /* CONFIG_FREEZE */
#if CONFIG_MEMORYSTATUS
static int
-memorystatus_send_note(int event_code, void *data, size_t data_length) {
+memorystatus_send_note(int event_code, void *data, size_t data_length)
+{
int ret;
struct kev_msg ev_msg;
if (ret) {
printf("%s: kev_post_msg() failed, err %d\n", __func__, ret);
}
-
+
return ret;
}
boolean_t
-memorystatus_warn_process(pid_t pid, __unused boolean_t is_active, __unused boolean_t is_fatal, boolean_t limit_exceeded) {
-
+memorystatus_warn_process(pid_t pid, __unused boolean_t is_active, __unused boolean_t is_fatal, boolean_t limit_exceeded)
+{
boolean_t ret = FALSE;
boolean_t found_knote = FALSE;
struct knote *kn = NULL;
}
#else /* CONFIG_EMBEDDED */
if (!limit_exceeded) {
-
/*
* Processes on desktop are not expecting to handle a system-wide
* critical or system-wide warning notification from this path.
*/
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PROC_LIMIT_WARN) {
- found_knote=TRUE;
+ found_knote = TRUE;
if (!is_fatal) {
/*
* Restrict proc_limit_warn notifications when
*/
if (is_active) {
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PROC_LIMIT_WARN_ACTIVE) {
- /*
- * Mark this knote for delivery.
- */
- kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_WARN;
+ /*
+ * Mark this knote for delivery.
+ */
+ kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_WARN;
/*
* And suppress it from future notifications.
- */
- kn->kn_sfflags &= ~NOTE_MEMORYSTATUS_PROC_LIMIT_WARN_ACTIVE;
+ */
+ kn->kn_sfflags &= ~NOTE_MEMORYSTATUS_PROC_LIMIT_WARN_ACTIVE;
send_knote_count++;
- }
+ }
} else {
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PROC_LIMIT_WARN_INACTIVE) {
- /*
- * Mark this knote for delivery.
- */
- kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_WARN;
+ /*
+ * Mark this knote for delivery.
+ */
+ kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_WARN;
/*
* And suppress it from future notifications.
- */
- kn->kn_sfflags &= ~NOTE_MEMORYSTATUS_PROC_LIMIT_WARN_INACTIVE;
+ */
+ kn->kn_sfflags &= ~NOTE_MEMORYSTATUS_PROC_LIMIT_WARN_INACTIVE;
send_knote_count++;
- }
+ }
}
} else {
/*
kn->kn_sfflags &= ~NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL_ACTIVE;
kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL;
send_knote_count++;
-
}
} else {
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL_INACTIVE) {
return EINVAL;
}
- return (task_low_mem_privileged_listener(current_task(), set_privilege, NULL));
+ return task_low_mem_privileged_listener(current_task(), set_privilege, NULL);
}
int
-memorystatus_send_pressure_note(pid_t pid) {
- MEMORYSTATUS_DEBUG(1, "memorystatus_send_pressure_note(): pid %d\n", pid);
- return memorystatus_send_note(kMemorystatusPressureNote, &pid, sizeof(pid));
+memorystatus_send_pressure_note(pid_t pid)
+{
+ MEMORYSTATUS_DEBUG(1, "memorystatus_send_pressure_note(): pid %d\n", pid);
+ return memorystatus_send_note(kMemorystatusPressureNote, &pid, sizeof(pid));
}
void
-memorystatus_send_low_swap_note(void) {
-
+memorystatus_send_low_swap_note(void)
+{
struct knote *kn = NULL;
memorystatus_klist_lock();
}
boolean_t
-memorystatus_bg_pressure_eligible(proc_t p) {
- boolean_t eligible = FALSE;
-
+memorystatus_bg_pressure_eligible(proc_t p)
+{
+ boolean_t eligible = FALSE;
+
proc_list_lock();
-
+
MEMORYSTATUS_DEBUG(1, "memorystatus_bg_pressure_eligible: pid %d, state 0x%x\n", p->p_pid, p->p_memstat_state);
-
- /* Foreground processes have already been dealt with at this point, so just test for eligibility */
- if (!(p->p_memstat_state & (P_MEMSTAT_TERMINATED | P_MEMSTAT_LOCKED | P_MEMSTAT_SUSPENDED | P_MEMSTAT_FROZEN))) {
- eligible = TRUE;
+
+ /* Foreground processes have already been dealt with at this point, so just test for eligibility */
+ if (!(p->p_memstat_state & (P_MEMSTAT_TERMINATED | P_MEMSTAT_LOCKED | P_MEMSTAT_SUSPENDED | P_MEMSTAT_FROZEN))) {
+ eligible = TRUE;
}
if (p->p_memstat_effectivepriority < JETSAM_PRIORITY_BACKGROUND_OPPORTUNISTIC) {
}
proc_list_unlock();
-
- return eligible;
+
+ return eligible;
}
boolean_t
-memorystatus_is_foreground_locked(proc_t p) {
- return ((p->p_memstat_effectivepriority == JETSAM_PRIORITY_FOREGROUND) ||
- (p->p_memstat_effectivepriority == JETSAM_PRIORITY_FOREGROUND_SUPPORT));
+memorystatus_is_foreground_locked(proc_t p)
+{
+ return (p->p_memstat_effectivepriority == JETSAM_PRIORITY_FOREGROUND) ||
+ (p->p_memstat_effectivepriority == JETSAM_PRIORITY_FOREGROUND_SUPPORT);
}
/*
* This is meant for stackshot and kperf -- it does not take the proc_list_lock
* to access the p_memstat_dirty field.
*/
-void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty, boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit)
+void
+memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty, boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit)
{
if (!v) {
- *is_dirty = FALSE;
- *is_dirty_tracked = FALSE;
+ *is_dirty = FALSE;
+ *is_dirty_tracked = FALSE;
*allow_idle_exit = FALSE;
} else {
proc_t p = (proc_t)v;
* Trigger levels to test the mechanism.
* Can be used via a sysctl.
*/
-#define TEST_LOW_MEMORY_TRIGGER_ONE 1
-#define TEST_LOW_MEMORY_TRIGGER_ALL 2
-#define TEST_PURGEABLE_TRIGGER_ONE 3
-#define TEST_PURGEABLE_TRIGGER_ALL 4
-#define TEST_LOW_MEMORY_PURGEABLE_TRIGGER_ONE 5
-#define TEST_LOW_MEMORY_PURGEABLE_TRIGGER_ALL 6
+#define TEST_LOW_MEMORY_TRIGGER_ONE 1
+#define TEST_LOW_MEMORY_TRIGGER_ALL 2
+#define TEST_PURGEABLE_TRIGGER_ONE 3
+#define TEST_PURGEABLE_TRIGGER_ALL 4
+#define TEST_LOW_MEMORY_PURGEABLE_TRIGGER_ONE 5
+#define TEST_LOW_MEMORY_PURGEABLE_TRIGGER_ALL 6
-boolean_t memorystatus_manual_testing_on = FALSE;
-vm_pressure_level_t memorystatus_manual_testing_level = kVMPressureNormal;
+boolean_t memorystatus_manual_testing_on = FALSE;
+vm_pressure_level_t memorystatus_manual_testing_level = kVMPressureNormal;
extern struct knote *
vm_pressure_select_optimal_candidate_to_notify(struct klist *, int, boolean_t);
-#define VM_PRESSURE_NOTIFY_WAIT_PERIOD 10000 /* milliseconds */
+#define VM_PRESSURE_NOTIFY_WAIT_PERIOD 10000 /* milliseconds */
#if DEBUG
#define VM_PRESSURE_DEBUG(cond, format, ...) \
#define VM_PRESSURE_DEBUG(cond, format, ...)
#endif
-#define INTER_NOTIFICATION_DELAY (250000) /* .25 second */
+#define INTER_NOTIFICATION_DELAY (250000) /* .25 second */
-void memorystatus_on_pageout_scan_end(void) {
+void
+memorystatus_on_pageout_scan_end(void)
+{
/* No-op */
}
is_knote_registered_modify_task_pressure_bits(struct knote *kn_max, int knote_pressure_level, task_t task, vm_pressure_level_t pressure_level_to_clear, vm_pressure_level_t pressure_level_to_set)
{
if (kn_max->kn_sfflags & knote_pressure_level) {
-
if (pressure_level_to_clear && task_has_been_notified(task, pressure_level_to_clear) == TRUE) {
-
task_clear_has_been_notified(task, pressure_level_to_clear);
}
struct knote *kn = NULL;
memorystatus_klist_lock();
- SLIST_FOREACH(kn, &memorystatus_klist, kn_selnext) {
-
- proc_t p = PROC_NULL;
- struct task* t = TASK_NULL;
+ SLIST_FOREACH(kn, &memorystatus_klist, kn_selnext) {
+ proc_t p = PROC_NULL;
+ struct task* t = TASK_NULL;
p = knote_get_kq(kn)->kq_p;
proc_list_lock();
static void vm_dispatch_memory_pressure(void);
void consider_vm_pressure_events(void);
-void consider_vm_pressure_events(void)
+void
+consider_vm_pressure_events(void)
{
vm_dispatch_memory_pressure();
}
-static void vm_dispatch_memory_pressure(void)
+static void
+vm_dispatch_memory_pressure(void)
{
memorystatus_update_vm_pressure(FALSE);
}
struct knote *
vm_pressure_select_optimal_candidate_to_notify(struct klist *candidate_list, int level, boolean_t target_foreground_process)
{
- struct knote *kn = NULL, *kn_max = NULL;
- uint64_t resident_max = 0; /* MB */
- struct timeval curr_tstamp = {0, 0};
- int elapsed_msecs = 0;
- int selected_task_importance = 0;
- static int pressure_snapshot = -1;
- boolean_t pressure_increase = FALSE;
+ struct knote *kn = NULL, *kn_max = NULL;
+ uint64_t resident_max = 0; /* MB */
+ struct timeval curr_tstamp = {0, 0};
+ int elapsed_msecs = 0;
+ int selected_task_importance = 0;
+ static int pressure_snapshot = -1;
+ boolean_t pressure_increase = FALSE;
if (pressure_snapshot == -1) {
/*
pressure_snapshot = level;
pressure_increase = TRUE;
} else {
-
if (level && (level >= pressure_snapshot)) {
pressure_increase = TRUE;
} else {
microuptime(&curr_tstamp);
- SLIST_FOREACH(kn, candidate_list, kn_selnext) {
-
- uint64_t resident_size = 0; /* MB */
- proc_t p = PROC_NULL;
- struct task* t = TASK_NULL;
- int curr_task_importance = 0;
- boolean_t consider_knote = FALSE;
- boolean_t privileged_listener = FALSE;
+ SLIST_FOREACH(kn, candidate_list, kn_selnext) {
+ uint64_t resident_size = 0; /* MB */
+ proc_t p = PROC_NULL;
+ struct task* t = TASK_NULL;
+ int curr_task_importance = 0;
+ boolean_t consider_knote = FALSE;
+ boolean_t privileged_listener = FALSE;
p = knote_get_kq(kn)->kq_p;
proc_list_lock();
* AND only if the pressure is increasing.
*/
if (level > 0) {
-
if (task_has_been_notified(t, level) == FALSE) {
-
/*
* Is this a privileged listener?
*/
if (task_low_mem_privileged_listener(t, FALSE, &privileged_listener) == 0) {
-
if (privileged_listener) {
kn_max = kn;
proc_rele(p);
continue;
}
} else if (level == 0) {
-
/*
* Task wasn't notified when the pressure was increasing and so
* no need to notify it that the pressure is decreasing.
}
/*
- * We don't want a small process to block large processes from
- * being notified again. <rdar://problem/7955532>
- */
- resident_size = (get_task_phys_footprint(t))/(1024*1024ULL); /* MB */
-
- if (resident_size >= vm_pressure_task_footprint_min) {
+ * We don't want a small process to block large processes from
+ * being notified again. <rdar://problem/7955532>
+ */
+ resident_size = (get_task_phys_footprint(t)) / (1024 * 1024ULL); /* MB */
+ if (resident_size >= vm_pressure_task_footprint_min) {
if (level > 0) {
/*
* Warning or Critical Pressure.
*/
- if (pressure_increase) {
+ if (pressure_increase) {
if ((curr_task_importance < selected_task_importance) ||
((curr_task_importance == selected_task_importance) && (resident_size > resident_max))) {
-
/*
* We have found a candidate process which is:
* a) at a lower importance than the current selected process
} else {
if ((curr_task_importance > selected_task_importance) ||
((curr_task_importance == selected_task_importance) && (resident_size > resident_max))) {
-
/*
* We have found a candidate process which is:
* a) at a higher importance than the current selected process
*/
if ((curr_task_importance > selected_task_importance) ||
((curr_task_importance == selected_task_importance) && (resident_size > resident_max))) {
-
consider_knote = TRUE;
}
}
selected_task_importance = curr_task_importance;
consider_knote = FALSE; /* reset for the next candidate */
}
- } else {
- /* There was no candidate with enough resident memory to scavenge */
- VM_PRESSURE_DEBUG(0, "[vm_pressure] threshold failed for pid %d with %llu resident...\n", p->p_pid, resident_size);
- }
+ } else {
+ /* There was no candidate with enough resident memory to scavenge */
+ VM_PRESSURE_DEBUG(0, "[vm_pressure] threshold failed for pid %d with %llu resident...\n", p->p_pid, resident_size);
+ }
proc_rele(p);
- }
+ }
done_scanning:
if (kn_max) {
return kn_max;
}
-#define VM_PRESSURE_DECREASED_SMOOTHING_PERIOD 5000 /* milliseconds */
-#define WARNING_NOTIFICATION_RESTING_PERIOD 25 /* seconds */
-#define CRITICAL_NOTIFICATION_RESTING_PERIOD 25 /* seconds */
+#define VM_PRESSURE_DECREASED_SMOOTHING_PERIOD 5000 /* milliseconds */
+#define WARNING_NOTIFICATION_RESTING_PERIOD 25 /* seconds */
+#define CRITICAL_NOTIFICATION_RESTING_PERIOD 25 /* seconds */
uint64_t next_warning_notification_sent_at_ts = 0;
uint64_t next_critical_notification_sent_at_ts = 0;
kern_return_t
-memorystatus_update_vm_pressure(boolean_t target_foreground_process)
-{
- struct knote *kn_max = NULL;
- struct knote *kn_cur = NULL, *kn_temp = NULL; /* for safe list traversal */
- pid_t target_pid = -1;
- struct klist dispatch_klist = { NULL };
- proc_t target_proc = PROC_NULL;
- struct task *task = NULL;
- boolean_t found_candidate = FALSE;
-
- static vm_pressure_level_t level_snapshot = kVMPressureNormal;
- static vm_pressure_level_t prev_level_snapshot = kVMPressureNormal;
- boolean_t smoothing_window_started = FALSE;
- struct timeval smoothing_window_start_tstamp = {0, 0};
- struct timeval curr_tstamp = {0, 0};
- int elapsed_msecs = 0;
- uint64_t curr_ts = mach_absolute_time();
+memorystatus_update_vm_pressure(boolean_t target_foreground_process)
+{
+ struct knote *kn_max = NULL;
+ struct knote *kn_cur = NULL, *kn_temp = NULL; /* for safe list traversal */
+ pid_t target_pid = -1;
+ struct klist dispatch_klist = { NULL };
+ proc_t target_proc = PROC_NULL;
+ struct task *task = NULL;
+ boolean_t found_candidate = FALSE;
+
+ static vm_pressure_level_t level_snapshot = kVMPressureNormal;
+ static vm_pressure_level_t prev_level_snapshot = kVMPressureNormal;
+ boolean_t smoothing_window_started = FALSE;
+ struct timeval smoothing_window_start_tstamp = {0, 0};
+ struct timeval curr_tstamp = {0, 0};
+ int elapsed_msecs = 0;
+ uint64_t curr_ts = mach_absolute_time();
#if !CONFIG_JETSAM
-#define MAX_IDLE_KILLS 100 /* limit the number of idle kills allowed */
+#define MAX_IDLE_KILLS 100 /* limit the number of idle kills allowed */
- int idle_kill_counter = 0;
+ int idle_kill_counter = 0;
/*
* On desktop we take this opportunity to free up memory pressure
#endif /* !CONFIG_JETSAM */
if (level_snapshot != kVMPressureNormal) {
-
/*
* Check to see if we are still in the 'resting' period
* after having notified all clients interested in
level_snapshot = memorystatus_vm_pressure_level;
if (level_snapshot == kVMPressureWarning || level_snapshot == kVMPressureUrgent) {
-
if (next_warning_notification_sent_at_ts) {
if (curr_ts < next_warning_notification_sent_at_ts) {
delay(INTER_NOTIFICATION_DELAY * 4 /* 1 sec */);
memorystatus_klist_reset_all_for_level(kVMPressureWarning);
}
} else if (level_snapshot == kVMPressureCritical) {
-
if (next_critical_notification_sent_at_ts) {
if (curr_ts < next_critical_notification_sent_at_ts) {
delay(INTER_NOTIFICATION_DELAY * 4 /* 1 sec */);
}
while (1) {
-
/*
* There is a race window here. But it's not clear
* how much we benefit from having extra synchronization.
* and see if this condition stays.
*/
if (smoothing_window_started == FALSE) {
-
smoothing_window_started = TRUE;
microuptime(&smoothing_window_start_tstamp);
}
elapsed_msecs = curr_tstamp.tv_sec * 1000 + curr_tstamp.tv_usec / 1000;
if (elapsed_msecs < VM_PRESSURE_DECREASED_SMOOTHING_PERIOD) {
-
delay(INTER_NOTIFICATION_DELAY);
continue;
}
memorystatus_klist_lock();
kn_max = vm_pressure_select_optimal_candidate_to_notify(&memorystatus_klist, level_snapshot, target_foreground_process);
- if (kn_max == NULL) {
+ if (kn_max == NULL) {
memorystatus_klist_unlock();
/*
}
return KERN_FAILURE;
}
-
+
target_proc = knote_get_kq(kn_max)->kq_p;
-
+
proc_list_lock();
if (target_proc != proc_ref_locked(target_proc)) {
target_proc = PROC_NULL;
continue;
}
proc_list_unlock();
-
+
target_pid = target_proc->p_pid;
task = (struct task *)(target_proc->task);
-
- if (level_snapshot != kVMPressureNormal) {
+ if (level_snapshot != kVMPressureNormal) {
if (level_snapshot == kVMPressureWarning || level_snapshot == kVMPressureUrgent) {
-
if (is_knote_registered_modify_task_pressure_bits(kn_max, NOTE_MEMORYSTATUS_PRESSURE_WARN, task, 0, kVMPressureWarning) == TRUE) {
found_candidate = TRUE;
}
} else {
if (level_snapshot == kVMPressureCritical) {
-
if (is_knote_registered_modify_task_pressure_bits(kn_max, NOTE_MEMORYSTATUS_PRESSURE_CRITICAL, task, 0, kVMPressureCritical) == TRUE) {
found_candidate = TRUE;
}
}
} else {
if (kn_max->kn_sfflags & NOTE_MEMORYSTATUS_PRESSURE_NORMAL) {
-
task_clear_has_been_notified(task, kVMPressureWarning);
task_clear_has_been_notified(task, kVMPressureCritical);
}
SLIST_FOREACH_SAFE(kn_cur, &memorystatus_klist, kn_selnext, kn_temp) {
-
int knote_pressure_level = convert_internal_pressure_level_to_dispatch_level(level_snapshot);
if (is_knote_registered_modify_task_pressure_bits(kn_cur, knote_pressure_level, task, 0, level_snapshot) == TRUE) {
* No need for delays etc.
*/
} else {
-
uint32_t sleep_interval = INTER_NOTIFICATION_DELAY;
#if CONFIG_JETSAM
unsigned int page_delta = 0;
unsigned int skip_delay_page_threshold = 0;
assert(memorystatus_available_pages_pressure >= memorystatus_available_pages_critical_base);
-
+
page_delta = (memorystatus_available_pages_pressure - memorystatus_available_pages_critical_base) / 2;
skip_delay_page_threshold = memorystatus_available_pages_pressure - page_delta;
sleep_interval = 0;
}
#endif /* CONFIG_JETSAM */
-
+
if (sleep_interval) {
delay(sleep_interval);
}
vm_pressure_level_t
convert_internal_pressure_level_to_dispatch_level(vm_pressure_level_t internal_pressure_level)
{
- vm_pressure_level_t dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_NORMAL;
-
- switch (internal_pressure_level) {
+ vm_pressure_level_t dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_NORMAL;
- case kVMPressureNormal:
- {
- dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_NORMAL;
- break;
- }
+ switch (internal_pressure_level) {
+ case kVMPressureNormal:
+ {
+ dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_NORMAL;
+ break;
+ }
- case kVMPressureWarning:
- case kVMPressureUrgent:
- {
- dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_WARN;
- break;
- }
+ case kVMPressureWarning:
+ case kVMPressureUrgent:
+ {
+ dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_WARN;
+ break;
+ }
- case kVMPressureCritical:
- {
- dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_CRITICAL;
- break;
- }
+ case kVMPressureCritical:
+ {
+ dispatch_level = NOTE_MEMORYSTATUS_PRESSURE_CRITICAL;
+ break;
+ }
- default:
- break;
+ default:
+ break;
}
return dispatch_level;
int error = 0;
error = priv_check_cred(kauth_cred_get(), PRIV_VM_PRESSURE, 0);
- if (error)
- return (error);
+ if (error) {
+ return error;
+ }
-#endif /* CONFIG_EMBEDDED */
+#endif /* CONFIG_EMBEDDED */
vm_pressure_level_t dispatch_level = convert_internal_pressure_level_to_dispatch_level(memorystatus_vm_pressure_level);
return SYSCTL_OUT(req, &dispatch_level, sizeof(dispatch_level));
#if DEBUG || DEVELOPMENT
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_pressure_level, CTLTYPE_INT|CTLFLAG_RD|CTLFLAG_LOCKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_pressure_level, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED,
0, 0, &sysctl_memorystatus_vm_pressure_level, "I", "");
#else /* DEBUG || DEVELOPMENT */
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_pressure_level, CTLTYPE_INT|CTLFLAG_RD|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_vm_pressure_level, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_memorystatus_vm_pressure_level, "I", "");
#endif /* DEBUG || DEVELOPMENT */
error = sysctl_handle_int(oidp, &level, 0, req);
if (error || !req->newptr) {
- return (error);
+ return error;
}
memorystatus_manual_testing_on = TRUE;
trigger_request = (level >> 16) & 0xFFFF;
- pressure_level = (level & 0xFFFF);
+ pressure_level = (level & 0xFFFF);
if (trigger_request < TEST_LOW_MEMORY_TRIGGER_ONE ||
trigger_request > TEST_LOW_MEMORY_PURGEABLE_TRIGGER_ALL) {
* So we translate those events to our internal levels here.
*/
if (pressure_level == NOTE_MEMORYSTATUS_PRESSURE_NORMAL) {
-
memorystatus_manual_testing_level = kVMPressureNormal;
force_purge = 0;
-
} else if (pressure_level == NOTE_MEMORYSTATUS_PRESSURE_WARN) {
-
memorystatus_manual_testing_level = kVMPressureWarning;
force_purge = vm_pageout_state.memorystatus_purge_on_warning;
-
} else if (pressure_level == NOTE_MEMORYSTATUS_PRESSURE_CRITICAL) {
-
memorystatus_manual_testing_level = kVMPressureCritical;
force_purge = vm_pageout_state.memorystatus_purge_on_critical;
}
/* no purging requested */
break;
}
- while (vm_purgeable_object_purge_one_unlocked(force_purge));
+ while (vm_purgeable_object_purge_one_unlocked(force_purge)) {
+ ;
+ }
break;
}
if ((trigger_request == TEST_LOW_MEMORY_TRIGGER_ONE) ||
(trigger_request == TEST_LOW_MEMORY_PURGEABLE_TRIGGER_ONE)) {
-
memorystatus_update_vm_pressure(TRUE);
}
if ((trigger_request == TEST_LOW_MEMORY_TRIGGER_ALL) ||
(trigger_request == TEST_LOW_MEMORY_PURGEABLE_TRIGGER_ALL)) {
-
while (memorystatus_update_vm_pressure(FALSE) == KERN_SUCCESS) {
continue;
}
}
-
+
if (pressure_level == NOTE_MEMORYSTATUS_PRESSURE_NORMAL) {
memorystatus_manual_testing_on = FALSE;
}
return 0;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorypressure_manual_trigger, CTLTYPE_INT|CTLFLAG_WR|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorypressure_manual_trigger, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_memorypressure_manual_trigger, "I", "");
-SYSCTL_INT(_kern, OID_AUTO, memorystatus_purge_on_warning, CTLFLAG_RW|CTLFLAG_LOCKED, &vm_pageout_state.memorystatus_purge_on_warning, 0, "");
-SYSCTL_INT(_kern, OID_AUTO, memorystatus_purge_on_urgent, CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_LOCKED, &vm_pageout_state.memorystatus_purge_on_urgent, 0, "");
-SYSCTL_INT(_kern, OID_AUTO, memorystatus_purge_on_critical, CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_LOCKED, &vm_pageout_state.memorystatus_purge_on_critical, 0, "");
+SYSCTL_INT(_kern, OID_AUTO, memorystatus_purge_on_warning, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_state.memorystatus_purge_on_warning, 0, "");
+SYSCTL_INT(_kern, OID_AUTO, memorystatus_purge_on_urgent, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_state.memorystatus_purge_on_urgent, 0, "");
+SYSCTL_INT(_kern, OID_AUTO, memorystatus_purge_on_critical, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_state.memorystatus_purge_on_critical, 0, "");
#if DEBUG || DEVELOPMENT
-SYSCTL_UINT(_kern, OID_AUTO, memorystatus_vm_pressure_events_enabled, CTLFLAG_RW|CTLFLAG_LOCKED, &vm_pressure_events_enabled, 0, "");
+SYSCTL_UINT(_kern, OID_AUTO, memorystatus_vm_pressure_events_enabled, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pressure_events_enabled, 0, "");
#endif
#endif /* VM_PRESSURE_EVENTS */
/* Return both allocated and actual size, since there's a race between allocation and list compilation */
static int
-memorystatus_get_priority_list(memorystatus_priority_entry_t **list_ptr, size_t *buffer_size, size_t *list_size, boolean_t size_only)
+memorystatus_get_priority_list(memorystatus_priority_entry_t **list_ptr, size_t *buffer_size, size_t *list_size, boolean_t size_only)
{
- uint32_t list_count, i = 0;
+ uint32_t list_count, i = 0;
memorystatus_priority_entry_t *list_entry;
proc_t p;
- list_count = memorystatus_list_count;
+ list_count = memorystatus_list_count;
*list_size = sizeof(memorystatus_priority_entry_t) * list_count;
/* Just a size check? */
if (size_only) {
return 0;
}
-
+
/* Otherwise, validate the size of the buffer */
if (*buffer_size < *list_size) {
return EINVAL;
}
- *list_ptr = (memorystatus_priority_entry_t*)kalloc(*list_size);
+ *list_ptr = (memorystatus_priority_entry_t*)kalloc(*list_size);
if (!*list_ptr) {
return ENOMEM;
}
list_entry->user_data = p->p_memstat_userdata;
if (p->p_memstat_memlimit <= 0) {
- task_get_phys_footprint_limit(p->task, &list_entry->limit);
- } else {
- list_entry->limit = p->p_memstat_memlimit;
- }
+ task_get_phys_footprint_limit(p->task, &list_entry->limit);
+ } else {
+ list_entry->limit = p->p_memstat_memlimit;
+ }
list_entry->state = memorystatus_build_state(p);
list_entry++;
*list_size += sizeof(memorystatus_priority_entry_t);
-
+
p = memorystatus_get_next_proc_locked(&i, p, TRUE);
}
-
+
proc_list_unlock();
-
+
MEMORYSTATUS_DEBUG(1, "memorystatus_get_priority_list: returning %lu for size\n", (unsigned long)*list_size);
-
+
return 0;
}
static int
-memorystatus_get_priority_pid(pid_t pid, user_addr_t buffer, size_t buffer_size) {
- int error = 0;
- memorystatus_priority_entry_t mp_entry;
+memorystatus_get_priority_pid(pid_t pid, user_addr_t buffer, size_t buffer_size)
+{
+ int error = 0;
+ memorystatus_priority_entry_t mp_entry;
- /* Validate inputs */
- if ((pid == 0) || (buffer == USER_ADDR_NULL) || (buffer_size != sizeof(memorystatus_priority_entry_t))) {
- return EINVAL;
- }
+ /* Validate inputs */
+ if ((pid == 0) || (buffer == USER_ADDR_NULL) || (buffer_size != sizeof(memorystatus_priority_entry_t))) {
+ return EINVAL;
+ }
proc_t p = proc_find(pid);
- if (!p) {
- return ESRCH;
- }
+ if (!p) {
+ return ESRCH;
+ }
- memset (&mp_entry, 0, sizeof(memorystatus_priority_entry_t));
+ memset(&mp_entry, 0, sizeof(memorystatus_priority_entry_t));
- mp_entry.pid = p->p_pid;
- mp_entry.priority = p->p_memstat_effectivepriority;
- mp_entry.user_data = p->p_memstat_userdata;
- if (p->p_memstat_memlimit <= 0) {
- task_get_phys_footprint_limit(p->task, &mp_entry.limit);
- } else {
- mp_entry.limit = p->p_memstat_memlimit;
- }
- mp_entry.state = memorystatus_build_state(p);
+ mp_entry.pid = p->p_pid;
+ mp_entry.priority = p->p_memstat_effectivepriority;
+ mp_entry.user_data = p->p_memstat_userdata;
+ if (p->p_memstat_memlimit <= 0) {
+ task_get_phys_footprint_limit(p->task, &mp_entry.limit);
+ } else {
+ mp_entry.limit = p->p_memstat_memlimit;
+ }
+ mp_entry.state = memorystatus_build_state(p);
- proc_rele(p);
+ proc_rele(p);
- error = copyout(&mp_entry, buffer, buffer_size);
+ error = copyout(&mp_entry, buffer, buffer_size);
- return (error);
+ return error;
}
static int
-memorystatus_cmd_get_priority_list(pid_t pid, user_addr_t buffer, size_t buffer_size, int32_t *retval) {
+memorystatus_cmd_get_priority_list(pid_t pid, user_addr_t buffer, size_t buffer_size, int32_t *retval)
+{
int error = 0;
boolean_t size_only;
size_t list_size;
/*
* When a non-zero pid is provided, the 'list' has only one entry.
*/
-
+
size_only = ((buffer == USER_ADDR_NULL) ? TRUE: FALSE);
if (pid != 0) {
*retval = list_size;
}
- return (error);
+ return error;
}
-static void
+static void
memorystatus_clear_errors(void)
{
proc_t p;
unsigned int i = 0;
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_CLEAR_ERRORS) | DBG_FUNC_START, 0, 0, 0, 0, 0);
-
+
proc_list_lock();
-
+
p = memorystatus_get_first_proc_locked(&i, TRUE);
while (p) {
if (p->p_memstat_state & P_MEMSTAT_ERROR) {
}
p = memorystatus_get_next_proc_locked(&i, p, TRUE);
}
-
+
proc_list_unlock();
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_CLEAR_ERRORS) | DBG_FUNC_END, 0, 0, 0, 0, 0);
#if CONFIG_JETSAM
static void
-memorystatus_update_levels_locked(boolean_t critical_only) {
-
+memorystatus_update_levels_locked(boolean_t critical_only)
+{
memorystatus_available_pages_critical = memorystatus_available_pages_critical_base;
/*
if (first_bucket->count) {
memorystatus_available_pages_critical += memorystatus_available_pages_critical_idle_offset;
- if (memorystatus_available_pages_critical > memorystatus_available_pages_pressure ) {
- /*
+ if (memorystatus_available_pages_critical > memorystatus_available_pages_pressure) {
+ /*
* The critical threshold must never exceed the pressure threshold
*/
memorystatus_available_pages_critical = memorystatus_available_pages_pressure;
if (memorystatus_jetsam_policy & kPolicyDiagnoseActive) {
memorystatus_available_pages_critical += memorystatus_jetsam_policy_offset_pages_diagnostic;
- if (memorystatus_available_pages_critical > memorystatus_available_pages_pressure ) {
- /*
+ if (memorystatus_available_pages_critical > memorystatus_available_pages_pressure) {
+ /*
* The critical threshold must never exceed the pressure threshold
*/
memorystatus_available_pages_critical = memorystatus_available_pages_pressure;
if (critical_only) {
return;
}
-
+
#if VM_PRESSURE_EVENTS
memorystatus_available_pages_pressure = (pressure_threshold_percentage / delta_percentage) * memorystatus_delta;
#if DEBUG || DEVELOPMENT
memorystatus_fast_jetsam_override(boolean_t enable_override)
{
/* If fast jetsam is not enabled, simply return */
- if (!fast_jetsam_enabled)
+ if (!fast_jetsam_enabled) {
return;
+ }
if (enable_override) {
- if ((memorystatus_jetsam_policy & kPolicyMoreFree) == kPolicyMoreFree)
+ if ((memorystatus_jetsam_policy & kPolicyMoreFree) == kPolicyMoreFree) {
return;
+ }
proc_list_lock();
memorystatus_jetsam_policy |= kPolicyMoreFree;
memorystatus_thread_pool_max();
memorystatus_update_levels_locked(TRUE);
proc_list_unlock();
} else {
- if ((memorystatus_jetsam_policy & kPolicyMoreFree) == 0)
+ if ((memorystatus_jetsam_policy & kPolicyMoreFree) == 0) {
return;
+ }
proc_list_lock();
memorystatus_jetsam_policy &= ~kPolicyMoreFree;
memorystatus_thread_pool_default();
*/
error = sysctl_handle_int(oidp, &more_free, 0, req);
- if (error || !req->newptr)
- return (error);
+ if (error || !req->newptr) {
+ return error;
+ }
if (more_free) {
memorystatus_fast_jetsam_override(true);
return 0;
}
-SYSCTL_PROC(_kern, OID_AUTO, memorystatus_policy_more_free, CTLTYPE_INT|CTLFLAG_WR|CTLFLAG_LOCKED|CTLFLAG_MASKED,
+SYSCTL_PROC(_kern, OID_AUTO, memorystatus_policy_more_free, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED,
0, 0, &sysctl_kern_memorystatus_policy_more_free, "I", "");
#endif /* CONFIG_JETSAM */
* Get the at_boot snapshot
*/
static int
-memorystatus_get_at_boot_snapshot(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only) {
+memorystatus_get_at_boot_snapshot(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only)
+{
size_t input_size = *snapshot_size;
/*
*snapshot = &memorystatus_at_boot_snapshot;
MEMORYSTATUS_DEBUG(7, "memorystatus_get_at_boot_snapshot: returned inputsize (%ld), snapshot_size(%ld), listcount(%d)\n",
- (long)input_size, (long)*snapshot_size, 0);
+ (long)input_size, (long)*snapshot_size, 0);
return 0;
}
* Get the previous fully populated snapshot
*/
static int
-memorystatus_get_jetsam_snapshot_copy(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only) {
+memorystatus_get_jetsam_snapshot_copy(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only)
+{
size_t input_size = *snapshot_size;
if (memorystatus_jetsam_snapshot_copy_count > 0) {
*snapshot = memorystatus_jetsam_snapshot_copy;
MEMORYSTATUS_DEBUG(7, "memorystatus_get_jetsam_snapshot_copy: returned inputsize (%ld), snapshot_size(%ld), listcount(%ld)\n",
- (long)input_size, (long)*snapshot_size, (long)memorystatus_jetsam_snapshot_copy_count);
+ (long)input_size, (long)*snapshot_size, (long)memorystatus_jetsam_snapshot_copy_count);
return 0;
}
static int
-memorystatus_get_on_demand_snapshot(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only) {
+memorystatus_get_on_demand_snapshot(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only)
+{
size_t input_size = *snapshot_size;
uint32_t ods_list_count = memorystatus_list_count;
- memorystatus_jetsam_snapshot_t *ods = NULL; /* The on_demand snapshot buffer */
+ memorystatus_jetsam_snapshot_t *ods = NULL; /* The on_demand snapshot buffer */
*snapshot_size = sizeof(memorystatus_jetsam_snapshot_t) + (sizeof(memorystatus_jetsam_snapshot_entry_t) * (ods_list_count));
*/
ods = (memorystatus_jetsam_snapshot_t *)kalloc(*snapshot_size);
if (!ods) {
- return (ENOMEM);
+ return ENOMEM;
}
memset(ods, 0, *snapshot_size);
*snapshot = ods;
MEMORYSTATUS_DEBUG(7, "memorystatus_get_on_demand_snapshot: returned inputsize (%ld), snapshot_size(%ld), listcount(%ld)\n",
- (long)input_size, (long)*snapshot_size, (long)ods_list_count);
-
+ (long)input_size, (long)*snapshot_size, (long)ods_list_count);
+
return 0;
}
static int
-memorystatus_get_jetsam_snapshot(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only) {
+memorystatus_get_jetsam_snapshot(memorystatus_jetsam_snapshot_t **snapshot, size_t *snapshot_size, boolean_t size_only)
+{
size_t input_size = *snapshot_size;
if (memorystatus_jetsam_snapshot_count > 0) {
*snapshot = memorystatus_jetsam_snapshot;
MEMORYSTATUS_DEBUG(7, "memorystatus_get_jetsam_snapshot: returned inputsize (%ld), snapshot_size(%ld), listcount(%ld)\n",
- (long)input_size, (long)*snapshot_size, (long)memorystatus_jetsam_snapshot_count);
+ (long)input_size, (long)*snapshot_size, (long)memorystatus_jetsam_snapshot_count);
return 0;
}
static int
-memorystatus_cmd_get_jetsam_snapshot(int32_t flags, user_addr_t buffer, size_t buffer_size, int32_t *retval) {
+memorystatus_cmd_get_jetsam_snapshot(int32_t flags, user_addr_t buffer, size_t buffer_size, int32_t *retval)
+{
int error = EINVAL;
boolean_t size_only;
boolean_t is_default_snapshot = FALSE;
* an on_demand snapshot buffer, which is freed below.
*/
error = memorystatus_get_on_demand_snapshot(&snapshot, &buffer_size, size_only);
-
} else if (flags & MEMORYSTATUS_SNAPSHOT_AT_BOOT) {
is_at_boot_snapshot = TRUE;
error = memorystatus_get_at_boot_snapshot(&snapshot, &buffer_size, size_only);
* The on_demand snapshot is always freed,
* even if the copyout failed.
*/
- if(snapshot) {
+ if (snapshot) {
kfree(snapshot, buffer_size);
}
}
}
/*
- * Routine: memorystatus_cmd_grp_set_priorities
+ * Routine: memorystatus_cmd_grp_set_priorities
* Purpose: Update priorities for a group of processes.
*
* [priority]
* [17 | p55, p67, p19 ]
* [12 | p103 p10 ]
* [ 7 | p25 ]
- * [ 0 | p71, p82, ]
+ * [ 0 | p71, p82, ]
*
* after [ new band | pid]
* [ xxx | p71, p82, p25, p103, p10, p55, p67, p19, p101]
static int
memorystatus_cmd_grp_set_priorities(user_addr_t buffer, size_t buffer_size)
{
-
/*
* We only handle setting priority
* per process
uint32_t bucket_index = 0;
boolean_t head_insert;
int32_t new_priority;
-
+
proc_t p;
/* Verify inputs */
error = EINVAL;
goto out;
}
-
- for (i=0; i < entry_count; i++) {
+
+ for (i = 0; i < entry_count; i++) {
if (entries[i].priority == -1) {
/* Use as shorthand for default priority */
entries[i].priority = JETSAM_PRIORITY_DEFAULT;
/* Both the aging bands are reserved for internal use;
* if requested, adjust to JETSAM_PRIORITY_IDLE. */
entries[i].priority = JETSAM_PRIORITY_IDLE;
- } else if (entries[i].priority == JETSAM_PRIORITY_IDLE_HEAD) {
+ } else if (entries[i].priority == JETSAM_PRIORITY_IDLE_HEAD) {
/* JETSAM_PRIORITY_IDLE_HEAD inserts at the head of the idle
* queue */
/* Deal with this later */
}
table_size = sizeof(memorystatus_internal_properties_t) * entry_count;
- if ( (table = (memorystatus_internal_properties_t *)kalloc(table_size)) == NULL) {
+ if ((table = (memorystatus_internal_properties_t *)kalloc(table_size)) == NULL) {
error = ENOMEM;
goto out;
}
* to highest priority.
*/
- bucket_index=0;
-
+ bucket_index = 0;
+
proc_list_lock();
/* Create the ordered table */
- p = memorystatus_get_first_proc_locked(&bucket_index, TRUE);
+ p = memorystatus_get_first_proc_locked(&bucket_index, TRUE);
while (p && (table_count < entry_count)) {
- for (i=0; i < entry_count; i++ ) {
+ for (i = 0; i < entry_count; i++) {
if (p->p_pid == entries[i].pid) {
/* Build the table data */
table[table_count].proc = p;
}
p = memorystatus_get_next_proc_locked(&bucket_index, p, TRUE);
}
-
+
/* We now have ordered list of procs ready to move */
- for (i=0; i < table_count; i++) {
+ for (i = 0; i < table_count; i++) {
p = table[i].proc;
assert(p != NULL);
new_priority = table[i].priority;
head_insert = false;
}
-
+
/* Not allowed */
if (p->p_memstat_state & P_MEMSTAT_INTERNAL) {
continue;
*/
out:
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_GRP_SET_PROP) | DBG_FUNC_END, MEMORYSTATUS_FLAGS_GRP_SET_PRIORITY, entry_count, table_count, 0, 0);
-
- if (entries)
+
+ if (entries) {
kfree(entries, buffer_size);
- if (table)
+ }
+ if (table) {
kfree(table, table_size);
+ }
- return (error);
+ return error;
}
static int
error = EINVAL;
goto out;
}
-
+
/* Verify sanity of input priorities */
- for (i=0; i < entry_count; i++) {
+ for (i = 0; i < entry_count; i++) {
/*
* 0 - low probability of use.
* 1 - high probability of use.
*
- * Keeping this field an int (& not a bool) to allow
+ * Keeping this field an int (& not a bool) to allow
* us to experiment with different values/approaches
* later on.
*/
tmp_table_new_size = sizeof(memorystatus_internal_probabilities_t) * entry_count;
- if ( (tmp_table_new = (memorystatus_internal_probabilities_t *) kalloc(tmp_table_new_size)) == NULL) {
+ if ((tmp_table_new = (memorystatus_internal_probabilities_t *) kalloc(tmp_table_new_size)) == NULL) {
error = ENOMEM;
goto out;
}
memorystatus_global_probabilities_size = tmp_table_new_size;
tmp_table_new = NULL;
- for (i=0; i < entry_count; i++ ) {
+ for (i = 0; i < entry_count; i++) {
/* Build the table data */
strlcpy(memorystatus_global_probabilities_table[i].proc_name, entries[i].proc_name, MAXCOMLEN + 1);
memorystatus_global_probabilities_table[i].use_probability = entries[i].use_probability;
}
proc_list_unlock();
-
+
out:
KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_MEMSTAT, BSD_MEMSTAT_GRP_SET_PROP) | DBG_FUNC_END, MEMORYSTATUS_FLAGS_GRP_SET_PROBABILITY, entry_count, tmp_table_new_size, 0, 0);
tmp_table_old = NULL;
}
- return (error);
-
+ return error;
}
static int
int error = 0;
if ((flags & MEMORYSTATUS_FLAGS_GRP_SET_PRIORITY) == MEMORYSTATUS_FLAGS_GRP_SET_PRIORITY) {
-
error = memorystatus_cmd_grp_set_priorities(buffer, buffer_size);
-
} else if ((flags & MEMORYSTATUS_FLAGS_GRP_SET_PROBABILITY) == MEMORYSTATUS_FLAGS_GRP_SET_PROBABILITY) {
-
error = memorystatus_cmd_grp_set_probabilities(buffer, buffer_size);
-
} else {
error = EINVAL;
}
* It is not used for the setting of memory limits, which is why the last 6 args to the
* memorystatus_update() call are 0 or FALSE.
*/
-
+
static int
-memorystatus_cmd_set_priority_properties(pid_t pid, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval) {
+memorystatus_cmd_set_priority_properties(pid_t pid, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval)
+{
int error = 0;
memorystatus_priority_properties_t mpp_entry;
if ((pid == 0) || (buffer == USER_ADDR_NULL) || (buffer_size != sizeof(memorystatus_priority_properties_t))) {
return EINVAL;
}
-
+
error = copyin(buffer, &mpp_entry, buffer_size);
if (error == 0) {
proc_t p;
-
+
p = proc_find(pid);
if (!p) {
return ESRCH;
}
-
+
if (p->p_memstat_state & P_MEMSTAT_INTERNAL) {
proc_rele(p);
return EPERM;
}
-
+
error = memorystatus_update(p, mpp_entry.priority, mpp_entry.user_data, FALSE, FALSE, 0, 0, FALSE, FALSE);
proc_rele(p);
}
-
- return(error);
+
+ return error;
}
static int
-memorystatus_cmd_set_memlimit_properties(pid_t pid, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval) {
+memorystatus_cmd_set_memlimit_properties(pid_t pid, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval)
+{
int error = 0;
memorystatus_memlimit_properties_t mmp_entry;
error = memorystatus_set_memlimit_properties(pid, &mmp_entry);
}
- return(error);
+ return error;
}
/*
* to the task's ledgers via task_set_phys_footprint_limit().
*/
static int
-memorystatus_cmd_get_memlimit_properties(pid_t pid, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval) {
+memorystatus_cmd_get_memlimit_properties(pid_t pid, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval)
+{
int error = 0;
memorystatus_memlimit_properties_t mmp_entry;
return EINVAL;
}
- memset (&mmp_entry, 0, sizeof(memorystatus_memlimit_properties_t));
+ memset(&mmp_entry, 0, sizeof(memorystatus_memlimit_properties_t));
proc_t p = proc_find(pid);
if (!p) {
* No locks taken since we hold a reference to the proc.
*/
- if (p->p_memstat_memlimit_active > 0 ) {
+ if (p->p_memstat_memlimit_active > 0) {
mmp_entry.memlimit_active = p->p_memstat_memlimit_active;
} else {
task_convert_phys_footprint_limit(-1, &mmp_entry.memlimit_active);
error = copyout(&mmp_entry, buffer, buffer_size);
- return(error);
+ return error;
}
* The delta is returned as bytes in excess or zero.
*/
static int
-memorystatus_cmd_get_memlimit_excess_np(pid_t pid, uint32_t flags, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval) {
+memorystatus_cmd_get_memlimit_excess_np(pid_t pid, uint32_t flags, user_addr_t buffer, size_t buffer_size, __unused int32_t *retval)
+{
int error = 0;
uint64_t footprint_in_bytes = 0;
uint64_t delta_in_bytes = 0;
/* Validate inputs */
if ((pid == 0) || (buffer == USER_ADDR_NULL) || (buffer_size != sizeof(uint64_t)) || (flags != 0)) {
- return EINVAL;
+ return EINVAL;
}
proc_t p = proc_find(pid);
proc_rele(p);
- memlimit_bytes = memlimit_mb * 1024 * 1024; /* MB to bytes */
+ memlimit_bytes = memlimit_mb * 1024 * 1024; /* MB to bytes */
/*
* Computed delta always returns >= 0 bytes
error = copyout(&delta_in_bytes, buffer, sizeof(delta_in_bytes));
- return(error);
+ return error;
}
static int
-memorystatus_cmd_get_pressure_status(int32_t *retval) {
+memorystatus_cmd_get_pressure_status(int32_t *retval)
+{
int error;
-
+
/* Need privilege for check */
error = priv_check_cred(kauth_cred_get(), PRIV_VM_PRESSURE, 0);
if (error) {
- return (error);
+ return error;
}
-
+
/* Inherently racy, so it's not worth taking a lock here */
*retval = (kVMPressureNormal != memorystatus_vm_pressure_level) ? 1 : 0;
-
+
return error;
}
int
-memorystatus_get_pressure_status_kdp() {
+memorystatus_get_pressure_status_kdp()
+{
return (kVMPressureNormal != memorystatus_vm_pressure_level) ? 1 : 0;
}
#if CONFIG_JETSAM
static int
-memorystatus_cmd_set_jetsam_memory_limit(pid_t pid, int32_t high_water_mark, __unused int32_t *retval, boolean_t is_fatal_limit) {
+memorystatus_cmd_set_jetsam_memory_limit(pid_t pid, int32_t high_water_mark, __unused int32_t *retval, boolean_t is_fatal_limit)
+{
int error = 0;
memorystatus_memlimit_properties_t entry;
}
error = memorystatus_set_memlimit_properties(pid, &entry);
- return (error);
+ return error;
}
#endif /* CONFIG_JETSAM */
static int
-memorystatus_set_memlimit_properties(pid_t pid, memorystatus_memlimit_properties_t *entry) {
-
+memorystatus_set_memlimit_properties(pid_t pid, memorystatus_memlimit_properties_t *entry)
+{
int32_t memlimit_active;
boolean_t memlimit_active_is_fatal;
int32_t memlimit_inactive;
boolean_t memlimit_inactive_is_fatal;
uint32_t valid_attrs = 0;
int error = 0;
-
+
proc_t p = proc_find(pid);
if (!p) {
return ESRCH;
error = (task_set_phys_footprint_limit_internal(p->task, ((p->p_memstat_memlimit > 0) ? p->p_memstat_memlimit : -1), NULL, use_active, is_fatal) == 0) ? 0 : EINVAL;
MEMORYSTATUS_DEBUG(3, "memorystatus_set_memlimit_properties: new limit on pid %d (%dMB %s) current priority (%d) dirty_state?=0x%x %s\n",
- p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
- (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), p->p_memstat_effectivepriority, p->p_memstat_dirty,
- (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
+ p->p_pid, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1),
+ (p->p_memstat_state & P_MEMSTAT_FATAL_MEMLIMIT ? "F " : "NF"), p->p_memstat_effectivepriority, p->p_memstat_dirty,
+ (p->p_memstat_dirty ? ((p->p_memstat_dirty & P_DIRTY) ? "isdirty" : "isclean") : ""));
DTRACE_MEMORYSTATUS2(memorystatus_set_memlimit, proc_t, p, int32_t, (p->p_memstat_memlimit > 0 ? p->p_memstat_memlimit : -1));
}
proc_list_unlock();
proc_rele(p);
-
+
return error;
}
/* Freeze preference set to FALSE. Set the P_MEMSTAT_FREEZE_DISABLED bit. */
p->p_memstat_state |= P_MEMSTAT_FREEZE_DISABLED;
printf("memorystatus_set_process_is_freezable: disabling freeze for pid %d [%s]\n",
- p->p_pid, (*p->p_name ? p->p_name : "unknown"));
+ p->p_pid, (*p->p_name ? p->p_name : "unknown"));
} else {
p->p_memstat_state &= ~P_MEMSTAT_FREEZE_DISABLED;
printf("memorystatus_set_process_is_freezable: enabling freeze for pid %d [%s]\n",
- p->p_pid, (*p->p_name ? p->p_name : "unknown"));
+ p->p_pid, (*p->p_name ? p->p_name : "unknown"));
}
proc_rele_locked(p);
proc_list_unlock();
}
int
-memorystatus_control(struct proc *p __unused, struct memorystatus_control_args *args, int *ret) {
+memorystatus_control(struct proc *p __unused, struct memorystatus_control_args *args, int *ret)
+{
int error = EINVAL;
boolean_t skip_auth_check = FALSE;
os_reason_t jetsam_reason = OS_REASON_NULL;
break;
case MEMORYSTATUS_CMD_GRP_SET_PROPERTIES:
error = memorystatus_cmd_grp_set_properties((int32_t)args->flags, args->buffer, args->buffersize, ret);
- break;
+ break;
case MEMORYSTATUS_CMD_GET_JETSAM_SNAPSHOT:
error = memorystatus_cmd_get_jetsam_snapshot((int32_t)args->flags, args->buffer, args->buffersize, ret);
break;
error = memorystatus_cmd_set_jetsam_memory_limit(args->pid, (int32_t)args->flags, ret, TRUE);
break;
#endif /* CONFIG_JETSAM */
- /* Test commands */
+ /* Test commands */
#if DEVELOPMENT || DEBUG
case MEMORYSTATUS_CMD_TEST_JETSAM:
jetsam_reason = os_reason_create(OS_REASON_JETSAM, JETSAM_REASON_GENERIC);
static int
filt_memorystatusattach(struct knote *kn, __unused struct kevent_internal_s *kev)
-{
+{
int error;
kn->kn_flags |= EV_CLEAR;
kn->kn_fflags = NOTE_MEMORYSTATUS_PRESSURE_WARN;
}
} else if (memorystatus_vm_pressure_level == kVMPressureCritical) {
-
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PRESSURE_CRITICAL) {
kn->kn_fflags = NOTE_MEMORYSTATUS_PRESSURE_CRITICAL;
}
case kMemorystatusProcLimitWarn:
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PROC_LIMIT_WARN) {
- kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_WARN;
- }
- break;
+ kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_WARN;
+ }
+ break;
case kMemorystatusProcLimitCritical:
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL) {
- kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL;
- }
- break;
+ kn->kn_fflags = NOTE_MEMORYSTATUS_PROC_LIMIT_CRITICAL;
+ }
+ break;
default:
break;
pid_t knote_pid = knote_proc->p_pid;
printf("filt_memorystatus: sending kn 0x%lx (event 0x%x) for pid (%d)\n",
- (unsigned long)kn, kn->kn_fflags, knote_pid);
+ (unsigned long)kn, kn->kn_fflags, knote_pid);
}
#endif
- return (kn->kn_fflags != 0);
+ return kn->kn_fflags != 0;
}
static int
}
static void
-memorystatus_klist_lock(void) {
+memorystatus_klist_lock(void)
+{
lck_mtx_lock(&memorystatus_klist_mutex);
}
static void
-memorystatus_klist_unlock(void) {
+memorystatus_klist_unlock(void)
+{
lck_mtx_unlock(&memorystatus_klist_mutex);
}
-void
-memorystatus_kevent_init(lck_grp_t *grp, lck_attr_t *attr) {
+void
+memorystatus_kevent_init(lck_grp_t *grp, lck_attr_t *attr)
+{
lck_mtx_init(&memorystatus_klist_mutex, grp, attr);
klist_init(&memorystatus_klist);
}
int
-memorystatus_knote_register(struct knote *kn) {
+memorystatus_knote_register(struct knote *kn)
+{
int error = 0;
memorystatus_klist_lock();
/*
* Support only userspace visible flags.
*/
- if ((kn->kn_sfflags & EVFILT_MEMORYSTATUS_ALL_MASK) == (unsigned int) kn->kn_sfflags) {
-
+ if ((kn->kn_sfflags & EVFILT_MEMORYSTATUS_ALL_MASK) == (unsigned int) kn->kn_sfflags) {
#if !CONFIG_EMBEDDED
if (kn->kn_sfflags & NOTE_MEMORYSTATUS_PROC_LIMIT_WARN) {
kn->kn_sfflags |= NOTE_MEMORYSTATUS_PROC_LIMIT_WARN_ACTIVE;
#endif /* !CONFIG_EMBEDDED */
KNOTE_ATTACH(&memorystatus_klist, kn);
-
- } else {
+ } else {
error = ENOTSUP;
}
-
+
memorystatus_klist_unlock();
-
+
return error;
}
void
-memorystatus_knote_unregister(struct knote *kn __unused) {
+memorystatus_knote_unregister(struct knote *kn __unused)
+{
memorystatus_klist_lock();
KNOTE_DETACH(&memorystatus_klist, kn);
memorystatus_klist_unlock();
#if 0
#if CONFIG_JETSAM && VM_PRESSURE_EVENTS
static boolean_t
-memorystatus_issue_pressure_kevent(boolean_t pressured) {
+memorystatus_issue_pressure_kevent(boolean_t pressured)
+{
memorystatus_klist_lock();
KNOTE(&memorystatus_klist, pressured ? kMemorystatusPressure : kMemorystatusNoPressure);
memorystatus_klist_unlock();
/* sorting info for a particular priority bucket */
typedef struct memstat_sort_info {
- coalition_t msi_coal;
- uint64_t msi_page_count;
- pid_t msi_pid;
- int msi_ntasks;
+ coalition_t msi_coal;
+ uint64_t msi_page_count;
+ pid_t msi_pid;
+ int msi_ntasks;
} memstat_sort_info_t;
-/*
+/*
* qsort from smallest page count to largest page count
*
* return < 0 for a < b
* 0 for a == b
* > 0 for a > b
*/
-static int memstat_asc_cmp(const void *a, const void *b)
+static int
+memstat_asc_cmp(const void *a, const void *b)
{
- const memstat_sort_info_t *msA = (const memstat_sort_info_t *)a;
- const memstat_sort_info_t *msB = (const memstat_sort_info_t *)b;
+ const memstat_sort_info_t *msA = (const memstat_sort_info_t *)a;
+ const memstat_sort_info_t *msB = (const memstat_sort_info_t *)b;
- return (int)((uint64_t)msA->msi_page_count - (uint64_t)msB->msi_page_count);
+ return (int)((uint64_t)msA->msi_page_count - (uint64_t)msB->msi_page_count);
}
/*
static int
memorystatus_sort_by_largest_coalition_locked(unsigned int bucket_index, int coal_sort_order)
{
-#define MAX_SORT_PIDS 80
-#define MAX_COAL_LEADERS 10
+#define MAX_SORT_PIDS 80
+#define MAX_COAL_LEADERS 10
unsigned int b = bucket_index;
int nleaders = 0;
int total_pids_moved = 0;
int i;
- /*
+ /*
* The system is typically under memory pressure when in this
* path, hence, we want to avoid dynamic memory allocation.
*/
pid_t pid_list[MAX_SORT_PIDS];
if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
- return(0);
- }
+ return 0;
+ }
/*
* Clear the array that holds coalition leader information
*/
- for (i=0; i < MAX_COAL_LEADERS; i++) {
+ for (i = 0; i < MAX_COAL_LEADERS; i++) {
leaders[i].msi_coal = COALITION_NULL;
- leaders[i].msi_page_count = 0; /* will hold total coalition page count */
- leaders[i].msi_pid = 0; /* will hold coalition leader pid */
- leaders[i].msi_ntasks = 0; /* will hold the number of tasks in a coalition */
+ leaders[i].msi_page_count = 0; /* will hold total coalition page count */
+ leaders[i].msi_pid = 0; /* will hold coalition leader pid */
+ leaders[i].msi_ntasks = 0; /* will hold the number of tasks in a coalition */
}
- p = memorystatus_get_first_proc_locked(&b, FALSE);
- while (p) {
- if (coalition_is_leader(p->task, COALITION_TYPE_JETSAM, &coal)) {
+ p = memorystatus_get_first_proc_locked(&b, FALSE);
+ while (p) {
+ if (coalition_is_leader(p->task, COALITION_TYPE_JETSAM, &coal)) {
if (nleaders < MAX_COAL_LEADERS) {
int coal_ntasks = 0;
uint64_t coal_page_count = coalition_get_page_count(coal, &coal_ntasks);
leaders[nleaders].msi_coal = coal;
leaders[nleaders].msi_page_count = coal_page_count;
- leaders[nleaders].msi_pid = p->p_pid; /* the coalition leader */
+ leaders[nleaders].msi_pid = p->p_pid; /* the coalition leader */
leaders[nleaders].msi_ntasks = coal_ntasks;
nleaders++;
} else {
- /*
+ /*
* We've hit MAX_COAL_LEADERS meaning we can handle no more coalitions.
- * Abandoned coalitions will linger at the tail of the priority band
+ * Abandoned coalitions will linger at the tail of the priority band
* when this sort session ends.
* TODO: should this be an assert?
*/
printf("%s: WARNING: more than %d leaders in priority band [%d]\n",
- __FUNCTION__, MAX_COAL_LEADERS, bucket_index);
+ __FUNCTION__, MAX_COAL_LEADERS, bucket_index);
break;
}
- }
- p=memorystatus_get_next_proc_locked(&b, p, FALSE);
- }
+ }
+ p = memorystatus_get_next_proc_locked(&b, p, FALSE);
+ }
if (nleaders == 0) {
/* Nothing to sort */
- return(0);
+ return 0;
}
- /*
+ /*
* Sort the coalition leader array, from smallest coalition page count
* to largest coalition page count. When inserted in the priority bucket,
* smallest coalition is handled first, resulting in the last to be jetsammed.
#if 0
for (i = 0; i < nleaders; i++) {
printf("%s: coal_leader[%d of %d] pid[%d] pages[%llu] ntasks[%d]\n",
- __FUNCTION__, i, nleaders, leaders[i].msi_pid, leaders[i].msi_page_count,
- leaders[i].msi_ntasks);
+ __FUNCTION__, i, nleaders, leaders[i].msi_pid, leaders[i].msi_page_count,
+ leaders[i].msi_ntasks);
}
#endif
* based on their coalition role.
*/
total_pids_moved = 0;
- for (i=0; i < nleaders; i++) {
-
+ for (i = 0; i < nleaders; i++) {
/* a bit of bookkeeping */
pids_moved = 0;
pids_moved += memorystatus_move_list_locked(bucket_index, pid_list, 1);
/* xpc services should jetsam after extensions */
- ntasks = coalition_get_pid_list (leaders[i].msi_coal, COALITION_ROLEMASK_XPC,
- coal_sort_order, pid_list, MAX_SORT_PIDS);
+ ntasks = coalition_get_pid_list(leaders[i].msi_coal, COALITION_ROLEMASK_XPC,
+ coal_sort_order, pid_list, MAX_SORT_PIDS);
if (ntasks > 0) {
- pids_moved += memorystatus_move_list_locked(bucket_index, pid_list,
- (ntasks <= MAX_SORT_PIDS ? ntasks : MAX_SORT_PIDS));
+ pids_moved += memorystatus_move_list_locked(bucket_index, pid_list,
+ (ntasks <= MAX_SORT_PIDS ? ntasks : MAX_SORT_PIDS));
}
/* extensions should jetsam after unmarked processes */
- ntasks = coalition_get_pid_list (leaders[i].msi_coal, COALITION_ROLEMASK_EXT,
- coal_sort_order, pid_list, MAX_SORT_PIDS);
+ ntasks = coalition_get_pid_list(leaders[i].msi_coal, COALITION_ROLEMASK_EXT,
+ coal_sort_order, pid_list, MAX_SORT_PIDS);
if (ntasks > 0) {
pids_moved += memorystatus_move_list_locked(bucket_index, pid_list,
- (ntasks <= MAX_SORT_PIDS ? ntasks : MAX_SORT_PIDS));
+ (ntasks <= MAX_SORT_PIDS ? ntasks : MAX_SORT_PIDS));
}
/* undefined coalition members should be the first to jetsam */
- ntasks = coalition_get_pid_list (leaders[i].msi_coal, COALITION_ROLEMASK_UNDEF,
- coal_sort_order, pid_list, MAX_SORT_PIDS);
+ ntasks = coalition_get_pid_list(leaders[i].msi_coal, COALITION_ROLEMASK_UNDEF,
+ coal_sort_order, pid_list, MAX_SORT_PIDS);
if (ntasks > 0) {
- pids_moved += memorystatus_move_list_locked(bucket_index, pid_list,
- (ntasks <= MAX_SORT_PIDS ? ntasks : MAX_SORT_PIDS));
+ pids_moved += memorystatus_move_list_locked(bucket_index, pid_list,
+ (ntasks <= MAX_SORT_PIDS ? ntasks : MAX_SORT_PIDS));
}
#if 0
* All the pids in the coalition were found in this band.
*/
printf("%s: pids_moved[%d] equal total coalition ntasks[%d] \n", __FUNCTION__,
- pids_moved, leaders[i].msi_ntasks);
+ pids_moved, leaders[i].msi_ntasks);
} else if (pids_moved > leaders[i].msi_ntasks) {
/*
* Apparently new coalition members showed up during the sort?
*/
printf("%s: pids_moved[%d] were greater than expected coalition ntasks[%d] \n", __FUNCTION__,
- pids_moved, leaders[i].msi_ntasks);
+ pids_moved, leaders[i].msi_ntasks);
} else {
/*
* Apparently not all the pids in the coalition were found in this band?
*/
printf("%s: pids_moved[%d] were less than expected coalition ntasks[%d] \n", __FUNCTION__,
- pids_moved, leaders[i].msi_ntasks);
+ pids_moved, leaders[i].msi_ntasks);
}
#endif
total_pids_moved += pids_moved;
-
} /* end for */
- return(total_pids_moved);
+ return total_pids_moved;
}
* Traverse a list of pids, searching for each within the priority band provided.
* If pid is found, move it to the front of the priority band.
* Never searches outside the priority band provided.
- *
+ *
* Input:
* bucket_index - jetsam priority band.
* pid_list - pointer to a list of pids.
* list_sz - number of pids in the list.
*
- * Pid list ordering is important in that,
+ * Pid list ordering is important in that,
* pid_list[n] is expected to jetsam ahead of pid_list[n+1].
* The sort_order is set by the coalition default.
*
- * Return:
+ * Return:
* the number of pids found and hence moved within the priority band.
*/
static int
int found_pids = 0;
if ((pid_list == NULL) || (list_sz <= 0)) {
- return(0);
+ return 0;
}
if (bucket_index >= MEMSTAT_BUCKET_COUNT) {
- return(0);
- }
+ return 0;
+ }
current_bucket = &memstat_bucket[bucket_index];
- for (i=0; i < list_sz; i++) {
+ for (i = 0; i < list_sz; i++) {
unsigned int b = bucket_index;
proc_t p = NULL;
proc_t aProc = NULL;
int list_index;
list_index = ((list_sz - 1) - i);
- aPid = pid_list[list_index];
-
- /* never search beyond bucket_index provided */
- p = memorystatus_get_first_proc_locked(&b, FALSE);
- while (p) {
- if (p->p_pid == aPid) {
- aProc = p;
- break;
- }
- p = memorystatus_get_next_proc_locked(&b, p, FALSE);
- }
-
- if (aProc == NULL) {
+ aPid = pid_list[list_index];
+
+ /* never search beyond bucket_index provided */
+ p = memorystatus_get_first_proc_locked(&b, FALSE);
+ while (p) {
+ if (p->p_pid == aPid) {
+ aProc = p;
+ break;
+ }
+ p = memorystatus_get_next_proc_locked(&b, p, FALSE);
+ }
+
+ if (aProc == NULL) {
/* pid not found in this band, just skip it */
- continue;
- } else {
- TAILQ_REMOVE(¤t_bucket->list, aProc, p_memstat_list);
- TAILQ_INSERT_HEAD(¤t_bucket->list, aProc, p_memstat_list);
+ continue;
+ } else {
+ TAILQ_REMOVE(¤t_bucket->list, aProc, p_memstat_list);
+ TAILQ_INSERT_HEAD(¤t_bucket->list, aProc, p_memstat_list);
found_pids++;
- }
- }
- return(found_pids);
+ }
+ }
+ return found_pids;
}
int
memorystatus_get_proccnt_upto_priority(int32_t max_bucket_index)
{
- int32_t i = JETSAM_PRIORITY_IDLE;
+ int32_t i = JETSAM_PRIORITY_IDLE;
int count = 0;
if (max_bucket_index >= MEMSTAT_BUCKET_COUNT) {
- return(-1);
- }
+ return -1;
+ }
- while(i <= max_bucket_index) {
+ while (i <= max_bucket_index) {
count += memstat_bucket[i++].count;
}
* as an indication to modify ledgers. For that it needs the task lock
* and since we came into this function with the task lock held, we'll deadlock.
*
- * Unfortunately we can't completely disable ledger updates because we still
+ * Unfortunately we can't completely disable ledger updates because we still
* need the ledger updates for a subset of processes i.e. daemons.
* When all processes on all platforms support memory limits, we can simply call
* memorystatus_update().
-
+ *
* It also has some logic to deal with 'aging' which, currently, is only applicable
* on CONFIG_JETSAM configs. So, till every platform has CONFIG_JETSAM we'll need
* to do this explicit band transition.
*/
memstat_bucket_t *current_bucket, *new_bucket;
- int32_t priority = 0;
+ int32_t priority = 0;
proc_list_lock();
* let's skip the whole jetsam band transition.
*/
proc_list_unlock();
- return(0);
+ return 0;
}
if (is_appnap) {
* parameters.
*/
proc_list_unlock();
- return (0);
+ return 0;
}
current_bucket = &memstat_bucket[JETSAM_PRIORITY_IDLE];
* Record idle start or idle delta.
*/
if (p->p_memstat_effectivepriority == priority) {
- /*
+ /*
* This process is not transitioning between
* jetsam priority buckets. Do nothing.
*/
proc_list_unlock();
- return (0);
+ return 0;
#else /* !CONFIG_JETSAM */
#pragma unused(p)
projects / apple / xnu.git / blobdiff