/* | |
* Copyright (C) 2008, 2009 Apple Inc. All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* | |
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#include "config.h" | |
#include "Threading.h" | |
#include <string.h> | |
namespace WTF { | |
struct NewThreadContext : FastAllocBase { | |
NewThreadContext(ThreadFunction entryPoint, void* data, const char* name) | |
: entryPoint(entryPoint) | |
, data(data) | |
, name(name) | |
{ | |
} | |
ThreadFunction entryPoint; | |
void* data; | |
const char* name; | |
Mutex creationMutex; | |
}; | |
static void* threadEntryPoint(void* contextData) | |
{ | |
NewThreadContext* context = reinterpret_cast<NewThreadContext*>(contextData); | |
// Block until our creating thread has completed any extra setup work, including | |
// establishing ThreadIdentifier. | |
{ | |
MutexLocker locker(context->creationMutex); | |
} | |
initializeCurrentThreadInternal(context->name); | |
// Grab the info that we need out of the context, then deallocate it. | |
ThreadFunction entryPoint = context->entryPoint; | |
void* data = context->data; | |
delete context; | |
return entryPoint(data); | |
} | |
ThreadIdentifier createThread(ThreadFunction entryPoint, void* data, const char* name) | |
{ | |
// Visual Studio has a 31-character limit on thread names. Longer names will | |
// be truncated silently, but we'd like callers to know about the limit. | |
#if !LOG_DISABLED | |
if (strlen(name) > 31) | |
LOG_ERROR("Thread name \"%s\" is longer than 31 characters and will be truncated by Visual Studio", name); | |
#endif | |
NewThreadContext* context = new NewThreadContext(entryPoint, data, name); | |
// Prevent the thread body from executing until we've established the thread identifier. | |
MutexLocker locker(context->creationMutex); | |
return createThreadInternal(threadEntryPoint, context, name); | |
} | |
#if PLATFORM(MAC) || PLATFORM(WIN) | |
// This function is deprecated but needs to be kept around for backward | |
// compatibility. Use the 3-argument version of createThread above. | |
ThreadIdentifier createThread(ThreadFunction entryPoint, void* data); | |
ThreadIdentifier createThread(ThreadFunction entryPoint, void* data) | |
{ | |
return createThread(entryPoint, data, 0); | |
} | |
#endif | |
} // namespace WTF |