From 648161bb0edfc3d43db63caed5cc5213bc6cb78f Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:41 -0800 Subject: auto import from //depot/cupcake/@135843 --- JavaScriptCore/wtf/Threading.h | 284 ----------------------------------------- 1 file changed, 284 deletions(-) delete mode 100644 JavaScriptCore/wtf/Threading.h (limited to 'JavaScriptCore/wtf/Threading.h') diff --git a/JavaScriptCore/wtf/Threading.h b/JavaScriptCore/wtf/Threading.h deleted file mode 100644 index b464da3..0000000 --- a/JavaScriptCore/wtf/Threading.h +++ /dev/null @@ -1,284 +0,0 @@ -/* - * Copyright (C) 2007, 2008 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. - * - * - * Note: The implementations of InterlockedIncrement and InterlockedDecrement are based - * on atomic_increment and atomic_exchange_and_add from the Boost C++ Library. The license - * is virtually identical to the Apple license above but is included here for completeness. - * - * Boost Software License - Version 1.0 - August 17th, 2003 - * - * Permission is hereby granted, free of charge, to any person or organization - * obtaining a copy of the software and accompanying documentation covered by - * this license (the "Software") to use, reproduce, display, distribute, - * execute, and transmit the Software, and to prepare derivative works of the - * Software, and to permit third-parties to whom the Software is furnished to - * do so, all subject to the following: - * - * The copyright notices in the Software and this entire statement, including - * the above license grant, this restriction and the following disclaimer, - * must be included in all copies of the Software, in whole or in part, and - * all derivative works of the Software, unless such copies or derivative - * works are solely in the form of machine-executable object code generated by - * a source language processor. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT - * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE - * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#ifndef Threading_h -#define Threading_h - -#include -#include -#include - -#if PLATFORM(WIN_OS) -#include -#elif PLATFORM(DARWIN) -#include -#elif defined ANDROID -#include "cutils/atomic.h" -#elif COMPILER(GCC) -#if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2)) -#include -#else -#include -#endif -#endif - -#if USE(PTHREADS) -#include -#elif PLATFORM(GTK) -#include -typedef struct _GMutex GMutex; -typedef struct _GCond GCond; -#endif - -#if PLATFORM(QT) -#include -QT_BEGIN_NAMESPACE -class QMutex; -class QWaitCondition; -QT_END_NAMESPACE -#endif - -#include - -// For portability, we do not use thread-safe statics natively supported by some compilers (e.g. gcc). -#define AtomicallyInitializedStatic(T, name) \ - WTF::lockAtomicallyInitializedStaticMutex(); \ - static T name; \ - WTF::unlockAtomicallyInitializedStaticMutex(); - -namespace WTF { - -typedef uint32_t ThreadIdentifier; -typedef void* (*ThreadFunction)(void* argument); - -// Returns 0 if thread creation failed -ThreadIdentifier createThread(ThreadFunction, void*, const char* threadName); - -ThreadIdentifier currentThread(); -bool isMainThread(); -int waitForThreadCompletion(ThreadIdentifier, void**); -void detachThread(ThreadIdentifier); - -#if USE(PTHREADS) -typedef pthread_mutex_t PlatformMutex; -typedef pthread_cond_t PlatformCondition; -#elif PLATFORM(GTK) -typedef GOwnPtr PlatformMutex; -typedef GOwnPtr PlatformCondition; -#elif PLATFORM(QT) -typedef QT_PREPEND_NAMESPACE(QMutex)* PlatformMutex; -typedef QT_PREPEND_NAMESPACE(QWaitCondition)* PlatformCondition; -#elif PLATFORM(WIN_OS) -struct PlatformMutex { - CRITICAL_SECTION m_internalMutex; - size_t m_recursionCount; -}; -struct PlatformCondition { - size_t m_timedOut; - size_t m_blocked; - size_t m_waitingForRemoval; - HANDLE m_gate; - HANDLE m_queue; - HANDLE m_mutex; -}; -#else -typedef void* PlatformMutex; -typedef void* PlatformCondition; -#endif - -class Mutex : Noncopyable { -public: - Mutex(); - ~Mutex(); - - void lock(); - bool tryLock(); - void unlock(); - -public: - PlatformMutex& impl() { return m_mutex; } -private: - PlatformMutex m_mutex; -}; - -typedef Locker MutexLocker; - -class ThreadCondition : Noncopyable { -public: - ThreadCondition(); - ~ThreadCondition(); - - void wait(Mutex& mutex); - // Returns true if the condition was signaled before the timeout, false if the timeout was reached - bool timedWait(Mutex&, double interval); - void signal(); - void broadcast(); - -private: - PlatformCondition m_condition; -}; - -#if PLATFORM(WIN_OS) -#define WTF_USE_LOCKFREE_THREADSAFESHARED 1 - -#if COMPILER(MINGW) || COMPILER(MSVC7) -inline void atomicIncrement(int* addend) { InterlockedIncrement(reinterpret_cast(addend)); } -inline int atomicDecrement(int* addend) { return InterlockedDecrement(reinterpret_cast(addend)); } -#else -inline void atomicIncrement(int volatile* addend) { InterlockedIncrement(reinterpret_cast(addend)); } -inline int atomicDecrement(int volatile* addend) { return InterlockedDecrement(reinterpret_cast(addend)); } -#endif - -#elif PLATFORM(DARWIN) -#define WTF_USE_LOCKFREE_THREADSAFESHARED 1 - -inline void atomicIncrement(int volatile* addend) { OSAtomicIncrement32Barrier(const_cast(addend)); } -inline int atomicDecrement(int volatile* addend) { return OSAtomicDecrement32Barrier(const_cast(addend)); } - -#elif defined ANDROID - -inline void atomicIncrement(int volatile* addend) { android_atomic_inc(addend); } -inline int atomicDecrement(int volatile* addend) { return android_atomic_dec(addend); } - -#elif COMPILER(GCC) -#define WTF_USE_LOCKFREE_THREADSAFESHARED 1 - -inline void atomicIncrement(int volatile* addend) { __gnu_cxx::__atomic_add(addend, 1); } -inline int atomicDecrement(int volatile* addend) { return __gnu_cxx::__exchange_and_add(addend, -1) - 1; } - -#endif - -template class ThreadSafeShared : Noncopyable { -public: - ThreadSafeShared(int initialRefCount = 1) - : m_refCount(initialRefCount) - { - } - - void ref() - { -#if USE(LOCKFREE_THREADSAFESHARED) - atomicIncrement(&m_refCount); -#else - MutexLocker locker(m_mutex); - ++m_refCount; -#endif - } - - void deref() - { -#if USE(LOCKFREE_THREADSAFESHARED) - if (atomicDecrement(&m_refCount) <= 0) -#else - { - MutexLocker locker(m_mutex); - --m_refCount; - } - if (m_refCount <= 0) -#endif - delete static_cast(this); - } - - bool hasOneRef() - { - return refCount() == 1; - } - - int refCount() const - { -#if !USE(LOCKFREE_THREADSAFESHARED) - MutexLocker locker(m_mutex); -#endif - return static_cast(m_refCount); - } - -private: - int m_refCount; -#if !USE(LOCKFREE_THREADSAFESHARED) - mutable Mutex m_mutex; -#endif -}; - -// This function must be called from the main thread. It is safe to call it repeatedly. -// Darwin is an exception to this rule: it is OK to call it from any thread, the only requirement is that the calls are not reentrant. -void initializeThreading(); - -#if !PLATFORM(WIN_OS) || PLATFORM(WX) -extern Mutex* atomicallyInitializedStaticMutex; -inline void lockAtomicallyInitializedStaticMutex() { atomicallyInitializedStaticMutex->lock(); } -inline void unlockAtomicallyInitializedStaticMutex() { atomicallyInitializedStaticMutex->unlock(); } -#else -void lockAtomicallyInitializedStaticMutex(); -void unlockAtomicallyInitializedStaticMutex(); -#endif - -} // namespace WTF - -using WTF::Mutex; -using WTF::MutexLocker; -using WTF::ThreadCondition; -using WTF::ThreadIdentifier; -using WTF::ThreadSafeShared; - -using WTF::createThread; -using WTF::currentThread; -using WTF::isMainThread; -using WTF::detachThread; -using WTF::waitForThreadCompletion; - -#endif // Threading_h -- cgit v1.1