/* * 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. */ #include "config.h" #include "RunLoopObserver.h" namespace WebCore { RunLoopObserver::~RunLoopObserver() { invalidate(); } void RunLoopObserver::runLoopObserverFired(CFRunLoopObserverRef, CFRunLoopActivity, void* context) { static_cast<RunLoopObserver*>(context)->runLoopObserverFired(); } void RunLoopObserver::runLoopObserverFired() { ASSERT(m_runLoopObserver); m_callback(); } void RunLoopObserver::schedule(CFRunLoopRef runLoop, CFRunLoopActivity activity) { if (!runLoop) runLoop = CFRunLoopGetCurrent(); // Make sure we wake up the loop or the observer could be delayed until some other source fires. CFRunLoopWakeUp(runLoop); if (m_runLoopObserver) return; CFRunLoopObserverContext context = { 0, this, 0, 0, 0 }; m_runLoopObserver = adoptCF(CFRunLoopObserverCreate(0, activity, true, m_order, runLoopObserverFired, &context)); CFRunLoopAddObserver(runLoop, m_runLoopObserver.get(), kCFRunLoopCommonModes); } void RunLoopObserver::invalidate() { if (m_runLoopObserver) { CFRunLoopObserverInvalidate(m_runLoopObserver.get()); m_runLoopObserver = nullptr; } } } // namespace WebCore