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 BSD_KERNEL_PRIVATE
37
38#if VM_PRESSURE_EVENTS
39
40extern vm_pressure_level_t memorystatus_vm_pressure_level;
41extern boolean_t memorystatus_hwm_candidates;
42extern unsigned int memorystatus_sustained_pressure_maximum_band;
43
44boolean_t memorystatus_warn_process(const proc_t p, __unused boolean_t is_active, __unused boolean_t is_fatal, boolean_t exceeded);
45int memorystatus_send_note(int event_code, void *data, uint32_t data_length);
46void memorystatus_send_low_swap_note(void);
47void consider_vm_pressure_events(void);
48void memorystatus_notify_init(void);
49
50#if CONFIG_MEMORYSTATUS
51
52int memorystatus_low_mem_privileged_listener(uint32_t op_flags);
53int memorystatus_send_pressure_note(int pid);
54boolean_t memorystatus_is_foreground_locked(proc_t p);
55boolean_t memorystatus_bg_pressure_eligible(proc_t p);
56void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty, boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit);
57extern void memorystatus_issue_fg_band_notify(void);
58
59#endif /* CONFIG_MEMORYSTATUS */
60
61#if DEBUG
62#define VM_PRESSURE_DEBUG(cond, format, ...) \
63do { \
64if (cond) { printf(format, ##__VA_ARGS__); } \
65} while(0)
66#else
67#define VM_PRESSURE_DEBUG(cond, format, ...)
68#endif
69
70#endif /* VM_PRESSURE_EVENTS */
71
72#endif /* BSD_KERNEL_PRIVATE */
73
74#endif /* SYS_MEMORYSTATUS_NOTIFY_H */
75