mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
/*
|
|
* 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 "flutter/sky/engine/wtf/ThreadIdentifierDataPthreads.h"
|
|
|
|
#include "flutter/sky/engine/wtf/Assertions.h"
|
|
#include "flutter/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)
|