1/*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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 in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
24 * THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "RunLoop.h"
29
30#include "WorkItem.h"
31
32#include <QApplication>
33#include <QAbstractEventDispatcher>
34#include <QObject>
35#include <QMetaMethod>
36#include <QMetaObject>
37#include <QTimerEvent>
38
39class RunLoop::TimerObject : public QObject
40{
41    Q_OBJECT
42public:
43    TimerObject(RunLoop* runLoop) : m_runLoop(runLoop)
44    {
45        int methodIndex = metaObject()->indexOfMethod("performWork()");
46        m_method = metaObject()->method(methodIndex);
47    }
48
49    Q_SLOT void performWork() { m_runLoop->performWork(); }
50    inline void wakeUp() { m_method.invoke(this, Qt::QueuedConnection); }
51
52protected:
53    virtual void timerEvent(QTimerEvent* event)
54    {
55        RunLoop::TimerBase::timerFired(m_runLoop, event->timerId());
56    }
57
58private:
59    RunLoop* m_runLoop;
60    QMetaMethod m_method;
61};
62
63void RunLoop::run()
64{
65    QCoreApplication::exec();
66}
67
68void RunLoop::stop()
69{
70    QCoreApplication::exit();
71}
72
73RunLoop::RunLoop()
74    : m_timerObject(new TimerObject(this))
75{
76}
77
78RunLoop::~RunLoop()
79{
80    delete m_timerObject;
81}
82
83void RunLoop::wakeUp()
84{
85    m_timerObject->wakeUp();
86}
87
88// RunLoop::Timer
89
90void RunLoop::TimerBase::timerFired(RunLoop* runLoop, int ID)
91{
92    TimerMap::iterator it = runLoop->m_activeTimers.find(ID);
93    ASSERT(it != runLoop->m_activeTimers.end());
94    TimerBase* timer = it->second;
95
96    if (!timer->m_isRepeating) {
97        // Stop the timer (calling stop would need another hash table lookup).
98        runLoop->m_activeTimers.remove(it);
99        runLoop->m_timerObject->killTimer(timer->m_ID);
100        timer->m_ID = 0;
101    }
102
103    timer->fired();
104}
105
106RunLoop::TimerBase::TimerBase(RunLoop* runLoop)
107    : m_runLoop(runLoop)
108    , m_ID(0)
109    , m_isRepeating(false)
110{
111}
112
113RunLoop::TimerBase::~TimerBase()
114{
115    stop();
116}
117
118void RunLoop::TimerBase::start(double nextFireInterval, bool repeat)
119{
120    stop();
121    int millis = static_cast<int>(nextFireInterval * 1000);
122    m_isRepeating = repeat;
123    m_ID = m_runLoop->m_timerObject->startTimer(millis);
124    ASSERT(m_ID);
125    m_runLoop->m_activeTimers.set(m_ID, this);
126}
127
128void RunLoop::TimerBase::stop()
129{
130    if (!m_ID)
131        return;
132    TimerMap::iterator it = m_runLoop->m_activeTimers.find(m_ID);
133    if (it == m_runLoop->m_activeTimers.end())
134        return;
135
136    m_runLoop->m_activeTimers.remove(it);
137    m_runLoop->m_timerObject->killTimer(m_ID);
138    m_ID = 0;
139}
140
141bool RunLoop::TimerBase::isActive() const
142{
143    return m_ID;
144}
145
146#include "RunLoopQt.moc"
147