| /* |
| * Copyright (C) 2009, 2011 Google 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| * OWNER OR 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 "sky/engine/wtf/ThreadIdentifierDataPthreads.h" |
| |
| #include "sky/engine/wtf/Assertions.h" |
| #include "sky/engine/wtf/WTF.h" |
| |
| #include <limits.h> |
| |
| #if USE(PTHREADS) |
| |
| // PTHREAD_KEYS_MAX might be not defined (e.g. in certain bionic versions), so explicitly define it here. |
| #ifndef PTHREAD_KEYS_MAX |
| #define PTHREAD_KEYS_MAX 1024 |
| #endif // PTHREAD_KEYS_MAX |
| |
| namespace WTF { |
| |
| pthread_key_t ThreadIdentifierData::m_key = PTHREAD_KEYS_MAX; |
| |
| void threadDidExit(ThreadIdentifier); |
| |
| ThreadIdentifierData::~ThreadIdentifierData() |
| { |
| threadDidExit(m_identifier); |
| } |
| |
| void ThreadIdentifierData::initializeOnce() |
| { |
| if (pthread_key_create(&m_key, destruct)) |
| CRASH(); |
| } |
| |
| ThreadIdentifier ThreadIdentifierData::identifier() |
| { |
| ASSERT(m_key != PTHREAD_KEYS_MAX); |
| ThreadIdentifierData* threadIdentifierData = static_cast<ThreadIdentifierData*>(pthread_getspecific(m_key)); |
| |
| return threadIdentifierData ? threadIdentifierData->m_identifier : 0; |
| } |
| |
| void ThreadIdentifierData::initialize(ThreadIdentifier id) |
| { |
| ASSERT(!identifier()); |
| pthread_setspecific(m_key, new ThreadIdentifierData(id)); |
| } |
| |
| void ThreadIdentifierData::destruct(void* data) |
| { |
| if (isShutdown()) |
| return; |
| |
| ThreadIdentifierData* threadIdentifierData = static_cast<ThreadIdentifierData*>(data); |
| ASSERT(threadIdentifierData); |
| |
| if (threadIdentifierData->m_isDestroyedOnce) { |
| delete threadIdentifierData; |
| return; |
| } |
| |
| threadIdentifierData->m_isDestroyedOnce = true; |
| // Re-setting the value for key causes another destruct() call after all other thread-specific destructors were called. |
| pthread_setspecific(m_key, threadIdentifierData); |
| } |
| |
| } // namespace WTF |
| |
| #endif // USE(PTHREADS) |