1/*
2 * Copyright (C) 2009 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 PluginHalter_h
27#define PluginHalter_h
28
29#include "PluginHalterClient.h"
30#include "Timer.h"
31#include <wtf/HashMap.h>
32#include <wtf/OwnPtr.h>
33
34namespace WebCore {
35
36class HaltablePlugin;
37
38class PluginHalter {
39    WTF_MAKE_NONCOPYABLE(PluginHalter); WTF_MAKE_FAST_ALLOCATED;
40public:
41    PluginHalter(PluginHalterClient*);
42
43    void didStartPlugin(HaltablePlugin*);
44    void didStopPlugin(HaltablePlugin*);
45
46    void setPluginAllowedRunTime(unsigned runTime) { m_pluginAllowedRunTime = runTime; }
47
48private:
49    void timerFired(Timer<PluginHalter>*);
50    void startTimerIfNecessary();
51
52    OwnPtr<PluginHalterClient> m_client;
53    Timer<PluginHalter> m_timer;
54    unsigned m_pluginAllowedRunTime;
55    double m_oldestStartTime;
56    HashMap<HaltablePlugin*, double> m_plugins;
57};
58
59} // namespace WebCore
60
61#endif // PluginHalter_h
62