/* * Copyright (C) 2011, 2014 Apple 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: * 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. ``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 * 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 RunLoopObserver_h #define RunLoopObserver_h #include <CoreFoundation/CoreFoundation.h> #include <functional> #include <wtf/Noncopyable.h> #include <wtf/RetainPtr.h> namespace WebCore { class RunLoopObserver { WTF_MAKE_NONCOPYABLE(RunLoopObserver); public: typedef std::function<void ()> RunLoopObserverCallback; static std::unique_ptr<RunLoopObserver> create(CFIndex order, RunLoopObserverCallback callback); ~RunLoopObserver(); void schedule(CFRunLoopRef = nullptr); void invalidate(); bool isScheduled() const { return m_runLoopObserver; } enum class WellKnownRunLoopOrders : CFIndex { CoreAnimationCommit = 2000000 }; protected: RunLoopObserver(CFIndex order, RunLoopObserverCallback callback) : m_order(order) , m_callback(callback) { } void runLoopObserverFired(); private: static void runLoopObserverFired(CFRunLoopObserverRef, CFRunLoopActivity, void* context); CFIndex m_order; RunLoopObserverCallback m_callback; RetainPtr<CFRunLoopObserverRef> m_runLoopObserver; }; } // namespace WebCore #endif // RunLoopObserver_h