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 40 extern vm_pressure_level_t memorystatus_vm_pressure_level; 41 extern _Atomic bool memorystatus_hwm_candidates; 42 extern unsigned int memorystatus_sustained_pressure_maximum_band; 43 44 boolean_t memorystatus_warn_process(const proc_t p, boolean_t is_active, 45 boolean_t is_fatal, boolean_t exceeded); 46 int memorystatus_send_note(int event_code, void *data, uint32_t data_length); 47 void memorystatus_send_low_swap_note(void); 48 void consider_vm_pressure_events(void); 49 void memorystatus_notify_init(void); 50 51 #if CONFIG_MEMORYSTATUS 52 53 int memorystatus_low_mem_privileged_listener(uint32_t op_flags); 54 int memorystatus_send_pressure_note(int pid); 55 boolean_t memorystatus_is_foreground_locked(proc_t p); 56 boolean_t memorystatus_bg_pressure_eligible(proc_t p); 57 void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty, 58 boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit); 59 void memorystatus_broadcast_jetsam_pressure( 60 vm_pressure_level_t pressure_level); 61 62 #endif /* CONFIG_MEMORYSTATUS */ 63 64 #if DEBUG 65 #define VM_PRESSURE_DEBUG(cond, format, ...) \ 66 do { \ 67 if (cond) { printf(format, ##__VA_ARGS__); } \ 68 } while(0) 69 #else 70 #define VM_PRESSURE_DEBUG(cond, format, ...) 71 #endif 72 73 #endif /* VM_PRESSURE_EVENTS */ 74 75 #endif /* BSD_KERNEL_PRIVATE */ 76 77 #endif /* SYS_MEMORYSTATUS_NOTIFY_H */ 78