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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 
     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