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/*
* Copyright (C) 2007, 2008, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
*
* 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") 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 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_THREADING_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_THREADING_H_
#include <stdint.h>
#include <memory>
#include "base/check_op.h"
#include "base/dcheck_is_on.h"
#include "base/threading/platform_thread.h"
#include "build/build_config.h"
#include "third_party/blink/renderer/platform/wtf/thread_specific.h"
#include "third_party/blink/renderer/platform/wtf/type_traits.h"
#include "third_party/blink/renderer/platform/wtf/wtf_export.h"
namespace WTF {
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_WIN)
WTF_EXPORT base::PlatformThreadId CurrentThread();
#else
// On Android gettid(3) uses a faster TLS model than thread_local.
// On Windows GetCurrentThreadId() directly pick TID from TEB.
inline base::PlatformThreadId CurrentThread() {
return base::PlatformThread::CurrentId();
}
#endif // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_WIN)
#if DCHECK_IS_ON()
WTF_EXPORT bool IsBeforeThreadCreated();
WTF_EXPORT void WillCreateThread();
WTF_EXPORT void SetIsBeforeThreadCreatedForTest();
#endif
struct ICUConverterWrapper;
class WTF_EXPORT Threading {
DISALLOW_NEW();
public:
Threading();
Threading(const Threading&) = delete;
Threading& operator=(const Threading&) = delete;
~Threading();
ICUConverterWrapper& CachedConverterICU() { return *cached_converter_icu_; }
base::PlatformThreadId ThreadId() const { return thread_id_; }
// Must be called on the main thread before any callers to wtfThreadData().
static void Initialize();
#if BUILDFLAG(IS_WIN) && defined(COMPILER_MSVC)
static size_t ThreadStackSize();
#endif
private:
std::unique_ptr<ICUConverterWrapper> cached_converter_icu_;
base::PlatformThreadId thread_id_;
#if BUILDFLAG(IS_WIN) && defined(COMPILER_MSVC)
size_t thread_stack_size_ = 0u;
#endif
static ThreadSpecific<Threading>* static_data_;
friend Threading& WtfThreading();
};
inline Threading& WtfThreading() {
DCHECK(Threading::static_data_);
return **Threading::static_data_;
}
} // namespace WTF
using WTF::CurrentThread;
using WTF::Threading;
using WTF::WtfThreading;
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_WTF_THREADING_H_
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