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1 /* | |
2 * Copyright 2007 The WebRTC Project Authors. All rights reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 // Helper function for using Cocoa with Posix threading. | |
11 | |
12 #import <Foundation/Foundation.h> | |
13 | |
14 #import "webrtc/base/maccocoathreadhelper.h" | |
15 | |
16 #include "webrtc/base/checks.h" | |
17 | |
18 namespace rtc { | |
19 | |
20 // Cocoa must be "put into multithreading mode" before Cocoa functionality can | |
21 // be used on POSIX threads. The way to do that is to spawn one thread that may | |
22 // immediately exit. | |
23 void InitCocoaMultiThreading() { | |
24 if ([NSThread isMultiThreaded] == NO) { | |
25 // The sole purpose of this autorelease pool is to avoid a console | |
26 // message on Leopard that tells us we're autoreleasing the thread | |
27 // with no autorelease pool in place. | |
28 // Doing NSAutoreleasePool* hack = [[NSAutoreleasePool alloc] init]; | |
29 // causes unused variable error. | |
30 NSAutoreleasePool* hack; | |
31 hack = [[NSAutoreleasePool alloc] init]; | |
32 [NSThread detachNewThreadSelector:@selector(class) | |
33 toTarget:[NSObject class] | |
34 withObject:nil]; | |
35 [hack drain]; | |
36 } | |
37 | |
38 RTC_DCHECK([NSThread isMultiThreaded]); | |
39 } | |
40 | |
41 } // namespace rtc | |
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