xref: /xnu-11215.81.4/bsd/sys/kern_memorystatus_notify.h (revision d4514f0bc1d3f944c22d92e68b646ac3fb40d452)
1*d4514f0bSApple OSS Distributions /*
2*d4514f0bSApple OSS Distributions  * Copyright (c) 2006-2018 Apple Computer, Inc. All rights reserved.
3*d4514f0bSApple OSS Distributions  *
4*d4514f0bSApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*d4514f0bSApple OSS Distributions  *
6*d4514f0bSApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*d4514f0bSApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*d4514f0bSApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*d4514f0bSApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*d4514f0bSApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*d4514f0bSApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*d4514f0bSApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*d4514f0bSApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*d4514f0bSApple OSS Distributions  *
15*d4514f0bSApple OSS Distributions  * Please obtain a copy of the License at
16*d4514f0bSApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*d4514f0bSApple OSS Distributions  *
18*d4514f0bSApple OSS Distributions  * The Original Code and all software distributed under the License are
19*d4514f0bSApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*d4514f0bSApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*d4514f0bSApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*d4514f0bSApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*d4514f0bSApple OSS Distributions  * Please see the License for the specific language governing rights and
24*d4514f0bSApple OSS Distributions  * limitations under the License.
25*d4514f0bSApple OSS Distributions  *
26*d4514f0bSApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*d4514f0bSApple OSS Distributions  */
28*d4514f0bSApple OSS Distributions 
29*d4514f0bSApple OSS Distributions #ifndef SYS_MEMORYSTATUS_NOTIFY_H
30*d4514f0bSApple OSS Distributions #define SYS_MEMORYSTATUS_NOTIFY_H
31*d4514f0bSApple OSS Distributions 
32*d4514f0bSApple OSS Distributions #include <stdint.h>
33*d4514f0bSApple OSS Distributions #include <sys/proc.h>
34*d4514f0bSApple OSS Distributions #include <sys/param.h>
35*d4514f0bSApple OSS Distributions 
36*d4514f0bSApple OSS Distributions #if BSD_KERNEL_PRIVATE
37*d4514f0bSApple OSS Distributions 
38*d4514f0bSApple OSS Distributions #if VM_PRESSURE_EVENTS
39*d4514f0bSApple OSS Distributions 
40*d4514f0bSApple OSS Distributions extern vm_pressure_level_t memorystatus_vm_pressure_level;
41*d4514f0bSApple OSS Distributions extern _Atomic bool memorystatus_hwm_candidates;
42*d4514f0bSApple OSS Distributions extern unsigned int memorystatus_sustained_pressure_maximum_band;
43*d4514f0bSApple OSS Distributions 
44*d4514f0bSApple OSS Distributions boolean_t memorystatus_warn_process(const proc_t p, boolean_t is_active,
45*d4514f0bSApple OSS Distributions     boolean_t is_fatal, boolean_t exceeded);
46*d4514f0bSApple OSS Distributions int memorystatus_send_note(int event_code, void *data, uint32_t data_length);
47*d4514f0bSApple OSS Distributions void memorystatus_send_low_swap_note(void);
48*d4514f0bSApple OSS Distributions void consider_vm_pressure_events(void);
49*d4514f0bSApple OSS Distributions void memorystatus_notify_init(void);
50*d4514f0bSApple OSS Distributions 
51*d4514f0bSApple OSS Distributions #if CONFIG_MEMORYSTATUS
52*d4514f0bSApple OSS Distributions 
53*d4514f0bSApple OSS Distributions int memorystatus_low_mem_privileged_listener(uint32_t op_flags);
54*d4514f0bSApple OSS Distributions int memorystatus_send_pressure_note(int pid);
55*d4514f0bSApple OSS Distributions boolean_t memorystatus_is_foreground_locked(proc_t p);
56*d4514f0bSApple OSS Distributions boolean_t memorystatus_bg_pressure_eligible(proc_t p);
57*d4514f0bSApple OSS Distributions void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty,
58*d4514f0bSApple OSS Distributions     boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit);
59*d4514f0bSApple OSS Distributions void memorystatus_broadcast_jetsam_pressure(
60*d4514f0bSApple OSS Distributions 	vm_pressure_level_t pressure_level);
61*d4514f0bSApple OSS Distributions 
62*d4514f0bSApple OSS Distributions #endif /* CONFIG_MEMORYSTATUS */
63*d4514f0bSApple OSS Distributions 
64*d4514f0bSApple OSS Distributions #if DEBUG
65*d4514f0bSApple OSS Distributions #define VM_PRESSURE_DEBUG(cond, format, ...)      \
66*d4514f0bSApple OSS Distributions do {                                              \
67*d4514f0bSApple OSS Distributions if (cond) { printf(format, ##__VA_ARGS__); } \
68*d4514f0bSApple OSS Distributions } while(0)
69*d4514f0bSApple OSS Distributions #else
70*d4514f0bSApple OSS Distributions #define VM_PRESSURE_DEBUG(cond, format, ...)
71*d4514f0bSApple OSS Distributions #endif
72*d4514f0bSApple OSS Distributions 
73*d4514f0bSApple OSS Distributions #endif /* VM_PRESSURE_EVENTS */
74*d4514f0bSApple OSS Distributions 
75*d4514f0bSApple OSS Distributions #endif /* BSD_KERNEL_PRIVATE */
76*d4514f0bSApple OSS Distributions 
77*d4514f0bSApple OSS Distributions #endif /* SYS_MEMORYSTATUS_NOTIFY_H */
78