| /* |
| * 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 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 ThreadingPrimitives_h |
| #define ThreadingPrimitives_h |
| |
| #include <wtf/FastMalloc.h> |
| #include <wtf/Locker.h> |
| #include <wtf/Noncopyable.h> |
| #include <wtf/WallTime.h> |
| |
| #if OS(WINDOWS) |
| #include <windows.h> |
| #endif |
| |
| #if USE(PTHREADS) |
| #include <pthread.h> |
| #endif |
| |
| namespace WTF { |
| |
| using ThreadFunction = void (*)(void* argument); |
| |
| #if USE(PTHREADS) |
| using PlatformThreadHandle = pthread_t; |
| using PlatformMutex = pthread_mutex_t; |
| using PlatformCondition = pthread_cond_t; |
| #elif OS(WINDOWS) |
| using ThreadIdentifier = uint32_t; |
| using PlatformThreadHandle = HANDLE; |
| using PlatformMutex = SRWLOCK; |
| using PlatformCondition = CONDITION_VARIABLE; |
| #else |
| #error "Not supported platform" |
| #endif |
| |
| class Mutex { |
| WTF_MAKE_NONCOPYABLE(Mutex); |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| WTF_EXPORT_PRIVATE Mutex(); |
| WTF_EXPORT_PRIVATE ~Mutex(); |
| |
| WTF_EXPORT_PRIVATE void lock(); |
| WTF_EXPORT_PRIVATE bool tryLock(); |
| WTF_EXPORT_PRIVATE void unlock(); |
| |
| PlatformMutex& impl() { return m_mutex; } |
| |
| private: |
| PlatformMutex m_mutex; |
| }; |
| |
| typedef Locker<Mutex> MutexLocker; |
| |
| class ThreadCondition { |
| WTF_MAKE_NONCOPYABLE(ThreadCondition); |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| WTF_EXPORT_PRIVATE ThreadCondition(); |
| WTF_EXPORT_PRIVATE ~ThreadCondition(); |
| |
| WTF_EXPORT_PRIVATE void wait(Mutex& mutex); |
| // Returns true if the condition was signaled before absoluteTime, false if the absoluteTime was reached or is in the past. |
| WTF_EXPORT_PRIVATE bool timedWait(Mutex&, WallTime absoluteTime); |
| WTF_EXPORT_PRIVATE void signal(); |
| WTF_EXPORT_PRIVATE void broadcast(); |
| |
| private: |
| PlatformCondition m_condition; |
| }; |
| |
| } // namespace WTF |
| |
| using WTF::Mutex; |
| using WTF::MutexLocker; |
| using WTF::ThreadCondition; |
| |
| #endif // ThreadingPrimitives_h |