1/*
2 * Copyright (C) 2008 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. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef StorageThread_h
27#define StorageThread_h
28
29#include <wtf/Functional.h>
30#include <wtf/HashSet.h>
31#include <wtf/MessageQueue.h>
32#include <wtf/PassOwnPtr.h>
33#include <wtf/PassRefPtr.h>
34#include <wtf/Threading.h>
35
36namespace WebCore {
37
38class StorageAreaSync;
39class StorageTask;
40
41class StorageThread {
42    WTF_MAKE_NONCOPYABLE(StorageThread); WTF_MAKE_FAST_ALLOCATED;
43public:
44    static PassOwnPtr<StorageThread> create();
45    ~StorageThread();
46
47    bool start();
48    void terminate();
49
50    void dispatch(const Function<void()>&);
51
52    static void releaseFastMallocFreeMemoryInAllThreads();
53
54private:
55    StorageThread();
56
57    // Called on background thread.
58    static void threadEntryPointCallback(void*);
59    void threadEntryPoint();
60
61    // Background thread part of the terminate procedure.
62    void performTerminate();
63
64    ThreadIdentifier m_threadID;
65    MessageQueue<Function<void ()> > m_queue;
66};
67
68} // namespace WebCore
69
70#endif // StorageThread_h
71