/* * Copyright (C) 2014 Igalia S.L. * * 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 CompositingRunLoop_h #define CompositingRunLoop_h #if USE(COORDINATED_GRAPHICS_THREADED) #include <wtf/Atomics.h> #include <wtf/Condition.h> #include <wtf/FastMalloc.h> #include <wtf/Function.h> #include <wtf/NeverDestroyed.h> #include <wtf/Noncopyable.h> #include <wtf/RunLoop.h> namespace WebKit { class CompositingRunLoop { WTF_MAKE_NONCOPYABLE(CompositingRunLoop); WTF_MAKE_FAST_ALLOCATED; public: CompositingRunLoop(Function<void ()>&&); ~CompositingRunLoop(); void performTask(Function<void ()>&&); void performTaskSync(Function<void ()>&&); bool isActive(); void scheduleUpdate(); void stopUpdates(); void updateCompleted(); private: enum class UpdateState { Completed, InProgress, PendingAfterCompletion, }; void updateTimerFired(); RunLoop::Timer<CompositingRunLoop> m_updateTimer; Function<void ()> m_updateFunction; Atomic<UpdateState> m_updateState; Lock m_dispatchSyncConditionMutex; Condition m_dispatchSyncCondition; }; } // namespace WebKit #endif // USE(COORDINATED_GRAPHICS_THREADED) #endif // CompositingRunLoop_h