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 <assert.h> 13 #import <Foundation/Foundation.h> 14 15 #import "webrtc/base/maccocoathreadhelper.h" 16 17 namespace rtc { 18 19 // Cocoa must be "put into multithreading mode" before Cocoa functionality can 20 // be used on POSIX threads. The way to do that is to spawn one thread that may 21 // immediately exit. 22 void InitCocoaMultiThreading() { 23 if ([NSThread isMultiThreaded] == NO) { 24 // The sole purpose of this autorelease pool is to avoid a console 25 // message on Leopard that tells us we're autoreleasing the thread 26 // with no autorelease pool in place. 27 // Doing NSAutoreleasePool* hack = [[NSAutoreleasePool alloc] init]; 28 // causes unused variable error. 29 NSAutoreleasePool* hack; 30 hack = [[NSAutoreleasePool alloc] init]; 31 [NSThread detachNewThreadSelector:@selector(class) 32 toTarget:[NSObject class] 33 withObject:nil]; 34 [hack drain]; 35 } 36 37 assert([NSThread isMultiThreaded]); 38 } 39 40 } // namespace rtc 41
