mmentovai@google.com
d3b0eaf482
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1476 0039d316-1c4b-4281-b951-d872f2087c98
49 linhas
1.4 KiB
Plaintext
49 linhas
1.4 KiB
Plaintext
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/platform_thread.h"
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#import <Foundation/Foundation.h>
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#include "base/logging.h"
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// A simple class that demonstrates our impressive ability to do nothing.
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@interface NoOp : NSObject
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// Does the deed. Or does it?
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+ (void)noOp;
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@end
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@implementation NoOp
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+ (void)noOp {
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}
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@end
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namespace base {
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// If Cocoa is to be used on more than one thread, it must know that the
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// application is multithreaded. Since it's possible to enter Cocoa code
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// from threads created by pthread_thread_create, Cocoa won't necessarily
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// be aware that the application is multithreaded. Spawning an NSThread is
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// enough to get Cocoa to set up for multithreaded operation, so this is done
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// if necessary before pthread_thread_create spawns any threads.
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//
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// http://developer.apple.com/documentation/Cocoa/Conceptual/Multithreading/CreatingThreads/chapter_4_section_4.html
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void InitThreading() {
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static BOOL multithreaded = [NSThread isMultiThreaded];
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if (!multithreaded) {
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[NSThread detachNewThreadSelector:@selector(noOp)
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toTarget:[NoOp class]
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withObject:nil];
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multithreaded = YES;
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DCHECK([NSThread isMultiThreaded]);
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}
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}
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} // namespace base
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