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