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--- Libc/Libc-825.25/sys/OSMemoryNotification.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_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. 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_LICENSE_HEADER_END@
- */
-
-#include <errno.h>
-#include <libkern/OSMemoryNotification.h>
-#include <mach/mach.h>
-#include <notify.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <dispatch/dispatch.h>
-#include <dispatch/private.h>
-
-const char *kOSMemoryNotificationName = "com.apple.system.memorystatus";
-
-struct _OSMemoryNotification {
- int token;
- mach_port_t port;
-};
-
-int
-OSMemoryNotificationCreate(OSMemoryNotificationRef *note)
-{
- OSMemoryNotificationRef ref = malloc(sizeof(struct _OSMemoryNotification));
-
- if (NULL == ref) {
- return ENOMEM;
- }
-
- if (NOTIFY_STATUS_OK != notify_register_mach_port(kOSMemoryNotificationName, &ref->port, 0, &ref->token))
- return ENOMEM;
-
- *note = ref;
-
- return 0;
-}
-
-int
-OSMemoryNotificationDestroy(OSMemoryNotificationRef note)
-{
- if (NOTIFY_STATUS_OK != notify_cancel(note->token))
- return EINVAL;
-
- if (KERN_SUCCESS != mach_port_deallocate(mach_task_self(), note->port))
- return EINVAL;
-
- free(note);
-
- return 0;
-}
-
-int
-OSMemoryNotificationWait(OSMemoryNotificationRef note, OSMemoryNotificationLevel *level)
-{
- return OSMemoryNotificationTimedWait(note, level, NULL);
-}
-
-static mach_msg_timeout_t
-abs_to_timeout(const struct timeval *abstime)
-{
- struct timeval rel, now;
-
- gettimeofday(&now, NULL);
-
- rel.tv_usec = abstime->tv_usec - now.tv_usec;
- rel.tv_sec = abstime->tv_sec - now.tv_sec;
- if (rel.tv_usec < 0) {
- rel.tv_usec += 1000000;
- rel.tv_sec--;
- }
- if (((int)rel.tv_sec < 0) || ((rel.tv_sec == 0) && (rel.tv_usec == 0))) {
- return 0;
- }
- return rel.tv_sec * 1000 + rel.tv_usec / 1000;
-}
-
-int
-OSMemoryNotificationTimedWait(OSMemoryNotificationRef note, OSMemoryNotificationLevel *level, const struct timeval *abstime)
-{
- dispatch_semaphore_t sema = dispatch_semaphore_create(0);
- dispatch_retain(sema);
-
- dispatch_source_t memoryNotificationSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_VM, 0, DISPATCH_VM_PRESSURE, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
- dispatch_source_set_event_handler(memoryNotificationSource, ^{
- dispatch_semaphore_signal(sema);
- dispatch_release(sema);
- });
-
- dispatch_resume(memoryNotificationSource);
-
- dispatch_time_t waitTime = DISPATCH_TIME_FOREVER;
- if (abstime) {
- mach_msg_timeout_t timeout = abs_to_timeout(abstime);
- waitTime = dispatch_time(DISPATCH_TIME_NOW, timeout * 1e6);
- }
-
- long ret = dispatch_semaphore_wait(sema, waitTime);
-
- dispatch_release(sema);
- dispatch_release(memoryNotificationSource);
-
- if (ret != 0) {
- return ETIMEDOUT;
- }
-
- if (level) {
- *level = OSMemoryNotificationLevelUrgent;
- }
-
- return 0;
-}
-
-OSMemoryNotificationLevel OSMemoryNotificationCurrentLevel(void)
-{
- return OSMemoryNotificationLevelNormal;
-}