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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 
34 namespace WebCore {
35 
36 class HaltablePlugin;
37 
38 class PluginHalter {
39     WTF_MAKE_NONCOPYABLE(PluginHalter); WTF_MAKE_FAST_ALLOCATED;
40 public:
41     PluginHalter(PluginHalterClient*);
42 
43     void didStartPlugin(HaltablePlugin*);
44     void didStopPlugin(HaltablePlugin*);
45 
setPluginAllowedRunTime(unsigned runTime)46     void setPluginAllowedRunTime(unsigned runTime) { m_pluginAllowedRunTime = runTime; }
47 
48 private:
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