1/* 2 * Copyright (C) 2012 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "ScrollingThread.h" 28 29#if ENABLE(THREADED_SCROLLING) 30 31namespace WebCore { 32 33void ScrollingThread::initializeRunLoop() 34{ 35 // Initialize the run loop. 36 { 37 MutexLocker locker(m_initializeRunLoopConditionMutex); 38 39 m_threadRunLoop = CFRunLoopGetCurrent(); 40 41 CFRunLoopSourceContext context = { 0, this, 0, 0, 0, 0, 0, 0, 0, threadRunLoopSourceCallback }; 42 m_threadRunLoopSource = adoptCF(CFRunLoopSourceCreate(0, 0, &context)); 43 CFRunLoopAddSource(CFRunLoopGetCurrent(), m_threadRunLoopSource.get(), kCFRunLoopDefaultMode); 44 45 m_initializeRunLoopCondition.broadcast(); 46 } 47 48 ASSERT(isCurrentThread()); 49 50 CFRunLoopRun(); 51} 52 53void ScrollingThread::wakeUpRunLoop() 54{ 55 CFRunLoopSourceSignal(m_threadRunLoopSource.get()); 56 CFRunLoopWakeUp(m_threadRunLoop.get()); 57} 58 59void ScrollingThread::threadRunLoopSourceCallback(void* scrollingThread) 60{ 61 static_cast<ScrollingThread*>(scrollingThread)->threadRunLoopSourceCallback(); 62} 63 64void ScrollingThread::threadRunLoopSourceCallback() 65{ 66 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 67 dispatchFunctionsFromScrollingThread(); 68 [pool drain]; 69} 70 71} // namespace WebCore 72 73#endif // ENABLE(THREADED_SCROLLING) 74