Upstream version 10.39.225.0
[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / core / dom / Microtask.cpp
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/core/v8/V8PerIsolateData.h"
35 #include "bindings/core/v8/V8RecursionScope.h"
36 #include "platform/Task.h"
37 #include "public/platform/WebThread.h"
38 #include <v8.h>
39
40 namespace blink {
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() || isolateData->destructionPending())
48         return;
49     isolateData->setPerformingMicrotaskCheckpoint(true);
50     {
51         // Ensure that end-of-task-or-microtask actions are performed.
52         V8RecursionScope recursionScope(isolate);
53         isolate->RunMicrotasks();
54     }
55     isolateData->setPerformingMicrotaskCheckpoint(false);
56 }
57
58 bool Microtask::performingCheckpoint(v8::Isolate* isolate)
59 {
60     return V8PerIsolateData::from(isolate)->performingMicrotaskCheckpoint();
61 }
62
63 static void microtaskFunctionCallback(void* data)
64 {
65     OwnPtr<WebThread::Task> task = adoptPtr(static_cast<WebThread::Task*>(data));
66     task->run();
67 }
68
69 void Microtask::enqueueMicrotask(PassOwnPtr<WebThread::Task> callback)
70 {
71     v8::Isolate* isolate = v8::Isolate::GetCurrent();
72     isolate->EnqueueMicrotask(&microtaskFunctionCallback, callback.leakPtr());
73 }
74
75 void Microtask::enqueueMicrotask(const Closure& callback)
76 {
77     enqueueMicrotask(adoptPtr(new Task(callback)));
78 }
79
80 } // namespace blink