1 /* 2 * Copyright (C) 2013 Google 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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * 3. Neither the name of Google Inc. nor the names of its contributors 15 * may be used to endorse or promote products derived from this 16 * software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include "config.h" 32 #include "core/dom/Microtask.h" 33 34 #include "bindings/v8/V8PerIsolateData.h" 35 #include "platform/Task.h" 36 #include "public/platform/WebThread.h" 37 #include "wtf/Vector.h" 38 #include <v8.h> 39 40 namespace WebCore { 41 42 void Microtask::performCheckpoint() 43 { 44 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 45 V8PerIsolateData* isolateData = V8PerIsolateData::from(isolate); 46 ASSERT(isolateData); 47 if (isolateData->recursionLevel() || isolateData->performingMicrotaskCheckpoint()) 48 return; 49 isolateData->setPerformingMicrotaskCheckpoint(true); 50 isolate->RunMicrotasks(); 51 isolateData->setPerformingMicrotaskCheckpoint(false); 52 } 53 54 static void microtaskFunctionCallback(void* data) 55 { 56 OwnPtr<blink::WebThread::Task> task = adoptPtr(static_cast<blink::WebThread::Task*>(data)); 57 task->run(); 58 } 59 60 void Microtask::enqueueMicrotask(PassOwnPtr<blink::WebThread::Task> callback) 61 { 62 v8::Isolate* isolate = v8::Isolate::GetCurrent(); 63 isolate->EnqueueMicrotask(µtaskFunctionCallback, callback.leakPtr()); 64 } 65 66 void Microtask::enqueueMicrotask(const Closure& callback) 67 { 68 enqueueMicrotask(adoptPtr(new Task(callback))); 69 } 70 71 } // namespace WebCore 72