/* * Copyright (c) 2006 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /*! @header kern_memorystatus.h This header defines a kernel event subclass for the OSMemoryNotification API */ #ifndef SYS_KERN_MEMORYSTATUS_H #define SYS_KERN_MEMORYSTATUS_H #ifndef MACH_KERNEL_PRIVATE #include <stdint.h> #include <sys/time.h> #include <sys/proc.h> /* * Define Memory Status event subclass. * Subclass of KEV_SYSTEM_CLASS */ /*! @defined KEV_MEMORYSTATUS_SUBCLASS @discussion The kernel event subclass for memory status events. */ #define KEV_MEMORYSTATUS_SUBCLASS 3 enum { kMemoryStatusLevelNote = 1, kMemoryStatusSnapshotNote = 2 }; enum { kMemoryStatusLevelAny = -1, kMemoryStatusLevelNormal = 0, kMemoryStatusLevelWarning = 1, kMemoryStatusLevelUrgent = 2, kMemoryStatusLevelCritical = 3 }; typedef struct jetsam_priority_entry { pid_t pid; uint32_t flags; int32_t hiwat_pages; int32_t hiwat_reserved1; int32_t hiwat_reserved2; int32_t hiwat_reserved3; } jetsam_priority_entry_t; /* ** maximum killable processes to keep track of */ #define kMaxPriorityEntries 64 typedef struct jetsam_snapshot_entry { pid_t pid; char name[MAXCOMLEN+1]; uint32_t pages; uint32_t flags; uint8_t uuid[16]; } jetsam_snapshot_entry_t; /* ** how many processes to snapshot */ #define kMaxSnapshotEntries 128 typedef struct jetsam_kernel_stats { uint32_t free_pages; uint32_t active_pages; uint32_t inactive_pages; uint32_t purgeable_pages; uint32_t wired_pages; } jetsam_kernel_stats_t; /* ** This is a variable-length struct. ** Allocate a buffer of the size returned by the sysctl, cast to a jetsam_snapshot_t * */ typedef struct jetsam_snapshot { jetsam_kernel_stats_t stats; size_t entry_count; jetsam_snapshot_entry_t entries[1]; } jetsam_snapshot_t; enum { kJetsamFlagsFrontmost = (1 << 0), kJetsamFlagsKilled = (1 << 1), kJetsamFlagsKilledHiwat = (1 << 2) }; #endif /* !MACH_KERNEL_PRIVATE */ #ifdef KERNEL extern void kern_memorystatus_init(void) __attribute__((section("__TEXT, initcode"))); extern int jetsam_kill_top_proc(void); extern int kern_memorystatus_wakeup; extern int kern_memorystatus_level; #endif /* KERNEL */ #endif /* SYS_KERN_MEMORYSTATUS_H */