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 DispatchQueueWorkItemEfl_h
27#define DispatchQueueWorkItemEfl_h
28
29#include <WorkQueue.h>
30#include <wtf/Assertions.h>
31#include <wtf/CurrentTime.h>
32#include <wtf/Functional.h>
33#include <wtf/RefCounted.h>
34
35class WorkItem {
36public:
37    static std::unique_ptr<WorkItem> create(PassRefPtr<WorkQueue> workQueue, std::function<void ()> function)
38    {
39        return std::unique_ptr<WorkItem>(new WorkItem(workQueue, WTF::move(function)));
40    }
41    void dispatch() { m_function(); }
42
43protected:
44    WorkItem(PassRefPtr<WorkQueue> workQueue, std::function<void ()> function)
45        : m_workQueue(workQueue)
46        , m_function(WTF::move(function))
47    {
48    }
49
50private:
51    RefPtr<WorkQueue> m_workQueue;
52    std::function<void ()> m_function;
53};
54
55class TimerWorkItem : public WorkItem {
56public:
57    static std::unique_ptr<TimerWorkItem> create(PassRefPtr<WorkQueue> workQueue, std::function<void ()> function, std::chrono::nanoseconds delayNanoSeconds)
58    {
59        ASSERT(delayNanoSeconds.count() >= 0);
60        return std::unique_ptr<TimerWorkItem>(new TimerWorkItem(workQueue, WTF::move(function), monotonicallyIncreasingTime() * 1000000000.0 + delayNanoSeconds.count()));
61    }
62    double expirationTimeNanoSeconds() const { return m_expirationTimeNanoSeconds; }
63    bool hasExpired(double currentTimeNanoSeconds) const { return currentTimeNanoSeconds >= m_expirationTimeNanoSeconds; }
64
65protected:
66    TimerWorkItem(PassRefPtr<WorkQueue> workQueue, std::function<void ()> function, double expirationTimeNanoSeconds)
67        : WorkItem(workQueue, WTF::move(function))
68        , m_expirationTimeNanoSeconds(expirationTimeNanoSeconds)
69    {
70    }
71
72private:
73    double m_expirationTimeNanoSeconds;
74};
75
76#endif // DispatchQueueWorkItemEfl_h
77