1/* 2 * Copyright (c) 2006 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 @header kern_memorystatus.h 30 This header defines a kernel event subclass for the OSMemoryNotification API 31 */ 32 33#ifndef SYS_KERN_MEMORYSTATUS_H 34#define SYS_KERN_MEMORYSTATUS_H 35 36/* 37 * Define Memory Status event subclass. 38 * Subclass of KEV_SYSTEM_CLASS 39 */ 40 41/*! 42 @defined KEV_MEMORYSTATUS_SUBCLASS 43 @discussion The kernel event subclass for memory status events. 44*/ 45#define KEV_MEMORYSTATUS_SUBCLASS 3 46 47enum { 48 kMemoryStatusLevelAny = -1, 49 kMemoryStatusLevelNormal = 0, 50 kMemoryStatusLevelWarning = 1, 51 kMemoryStatusLevelUrgent = 2, 52 kMemoryStatusLevelCritical = 3 53}; 54 55#ifdef KERNEL 56extern void kern_memorystatus_init(void) __attribute__((section("__TEXT, initcode"))); 57 58extern int kern_memorystatus_wakeup; 59extern int kern_memorystatus_level; 60 61#endif /* KERNEL */ 62#endif /* SYS_KERN_MEMORYSTATUS_H */ 63