1/*
2 * Copyright (C) 2011 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 * 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'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24#ifndef CCMainThread_h
25#define CCMainThread_h
26
27#include <wtf/Noncopyable.h>
28#include <wtf/PassOwnPtr.h>
29
30namespace WebCore {
31
32// Task wrapper around WTF::callOnMainThreadThread
33class CCMainThread {
34public:
35    class Task {
36        WTF_MAKE_NONCOPYABLE(Task);
37    public:
38        virtual ~Task() { }
39        virtual void performTask() = 0;
40        void* instance() const { return m_instance; }
41    protected:
42        Task(void* instance) : m_instance(instance) { }
43        void* m_instance;
44    };
45
46    static void postTask(PassOwnPtr<Task>); // Executes the task on main thread asynchronously.
47private:
48    static void performTask(void*);
49};
50
51} // namespace WebCore
52
53#endif // CCMainThread_h
54