1/*
2 * Copyright (C) 2013 Samsung Electronics. 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#ifndef DispatchQueueEfl_h
27#define DispatchQueueEfl_h
28
29#include <time.h>
30#include <wtf/Functional.h>
31#include <wtf/RefCounted.h>
32#include <wtf/Vector.h>
33
34class TimerWorkItem;
35class WorkItem;
36
37class DispatchQueue : public ThreadSafeRefCounted<DispatchQueue> {
38public:
39    static PassRefPtr<DispatchQueue> create(const char* name);
40    ~DispatchQueue();
41
42    void dispatch(std::unique_ptr<WorkItem>);
43    void dispatch(std::unique_ptr<TimerWorkItem>);
44    void stopThread();
45    void setSocketEventHandler(int, std::function<void ()>);
46    void clearSocketEventHandler();
47
48private:
49    class ThreadContext;
50
51    DispatchQueue();
52
53    void performWork();
54    void performTimerWork();
55    void performFileDescriptorWork();
56    void insertTimerWorkItem(std::unique_ptr<TimerWorkItem>);
57    void dispatchQueueThread();
58    void wakeUpThread();
59    timeval* getNextTimeOut() const;
60
61    fd_set m_fileDescriptorSet;
62    int m_maxFileDescriptor;
63    int m_readFromPipeDescriptor;
64    int m_writeToPipeDescriptor;
65    Mutex m_writeToPipeDescriptorLock;
66
67    bool m_isThreadRunning;
68
69    int m_socketDescriptor;
70    std::function<void ()> m_socketEventHandler;
71
72    Vector<std::unique_ptr<WorkItem>> m_workItems;
73    Mutex m_workItemsLock;
74
75    Vector<std::unique_ptr<TimerWorkItem>> m_timerWorkItems;
76    mutable Mutex m_timerWorkItemsLock;
77};
78
79#endif // DispatchQueueEfl_h
80