bsd/sys/kern_memorystatus_notify.h

   1 /*
   2  * Copyright (c) 2006-2018 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #ifndef SYS_MEMORYSTATUS_NOTIFY_H
  30 #define SYS_MEMORYSTATUS_NOTIFY_H
  31
  32 #include <stdint.h>
  33 #include <sys/proc.h>
  34 #include <sys/param.h>
  35
  36 #if VM_PRESSURE_EVENTS
  37
  38 extern vm_pressure_level_t memorystatus_vm_pressure_level;
  39 extern boolean_t memorystatus_hwm_candidates;
  40
  41 boolean_t memorystatus_warn_process(pid_t pid, __unused boolean_t is_active, __unused boolean_t is_fatal, boolean_t exceeded);
  42 int memorystatus_send_note(int event_code, void *data, size_t data_length);
  43 void memorystatus_send_low_swap_note(void);
  44 void consider_vm_pressure_events(void);
  45
  46 #if CONFIG_MEMORYSTATUS
  47
  48 int memorystatus_low_mem_privileged_listener(uint32_t op_flags);
  49 int memorystatus_send_pressure_note(int pid);
  50 boolean_t memorystatus_is_foreground_locked(proc_t p);
  51 boolean_t memorystatus_bg_pressure_eligible(proc_t p);
  52 void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty, boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit);
  53 extern void memorystatus_issue_fg_band_notify(void);
  54
  55 #endif /* CONFIG_MEMORYSTATUS */
  56
  57 #if DEBUG
  58 #define VM_PRESSURE_DEBUG(cond, format, ...)      \
  59 do {                                              \
  60 if (cond) { printf(format, ##__VA_ARGS__); } \
  61 } while(0)
  62 #else
  63 #define VM_PRESSURE_DEBUG(cond, format, ...)
  64 #endif
  65
  66 #endif /* VM_PRESSURE_EVENTS */
  67
  68 #endif /* SYS_MEMORYSTATUS_NOTIFY_H */