1 /* 2 * Copyright (C) 2008 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 PluginMainThreadScheduler_h 27 #define PluginMainThreadScheduler_h 28 29 #include <wtf/Deque.h> 30 #include <wtf/HashMap.h> 31 #include <wtf/MainThread.h> 32 #include <wtf/Threading.h> 33 34 typedef struct _NPP NPP_t; 35 typedef NPP_t* NPP; 36 37 namespace WebCore { 38 39 class PluginMainThreadScheduler : public Noncopyable { 40 public: 41 typedef void MainThreadFunction(void*); 42 43 static PluginMainThreadScheduler& scheduler(); 44 45 void scheduleCall(NPP, MainThreadFunction*, void* userData); 46 47 void registerPlugin(NPP); 48 void unregisterPlugin(NPP); 49 50 private: 51 PluginMainThreadScheduler(); 52 void dispatchCalls(); 53 54 class Call; 55 56 void dispatchCallsForPlugin(NPP, const Deque<Call>& calls); 57 typedef HashMap<NPP, Deque<Call> > CallQueueMap; 58 59 static void mainThreadCallback(void* context); 60 61 class Call { 62 public: Call(MainThreadFunction * function,void * userData)63 Call(MainThreadFunction* function, void* userData) 64 : m_function(function) 65 , m_userData(userData) 66 { 67 } 68 performCall()69 void performCall() const 70 { 71 m_function(m_userData); 72 } 73 74 private: 75 MainThreadFunction* m_function; 76 void* m_userData; 77 }; 78 79 bool m_callPending; 80 CallQueueMap m_callQueueMap; 81 Mutex m_queueMutex; 82 }; 83 84 } // namespace WebCore 85 86 #endif // PluginMainThreadScheduler_h 87