text: /*
   * Copyright (C) 2010 Apple Inc. All rights reserved.
   * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
   * Portions Copyright (c) 2010 Motorola Mobility, Inc.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   * THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef RunLoop_h
  #define RunLoop_h
  
  #include <wtf/Deque.h>
  #include <wtf/Forward.h>
  #include <wtf/FunctionDispatcher.h>
  #include <wtf/Functional.h>
  #include <wtf/HashMap.h>
  #include <wtf/RetainPtr.h>
  #include <wtf/Threading.h>
  
  #if PLATFORM(GTK)
  #include <wtf/gobject/GRefPtr.h>
  #endif
  
  #if PLATFORM(EFL)
  #include <Ecore.h>
  #endif
  
  namespace WebCore {
  
  class RunLoop : public FunctionDispatcher {
  public:
      // Must be called from the main thread (except for the Mac platform, where it
      // can be called from any thread).
      static void initializeMainRunLoop();
  
      // Must be called before entering main run loop. If called, application style run loop will be used, handling events.
      static void setUseApplicationRunLoopOnMainRunLoop();
  
      static RunLoop* current();
      static RunLoop* main();
      ~RunLoop();
  
      virtual void dispatch(const Function<void()>&) OVERRIDE;
  
      static void run();
      void stop();
      void wakeUp();
  
  #if PLATFORM(MAC)
      void runForDuration(double duration);
  #endif
      
      class TimerBase {
          friend class RunLoop;
      public:
          explicit TimerBase(RunLoop*);
          virtual ~TimerBase();
  
          void startRepeating(double repeatInterval) { start(repeatInterval, true); }
          void startOneShot(double interval) { start(interval, false); }
  
          void stop();
          bool isActive() const;
  
          virtual void fired() = 0;
  
      private:
          void start(double nextFireInterval, bool repeat);
  
          RunLoop* m_runLoop;
  
  #if PLATFORM(WIN)
          static void timerFired(RunLoop*, uint64_t ID);
          uint64_t m_ID;
          bool m_isRepeating;
  #elif PLATFORM(MAC)
          static void timerFired(CFRunLoopTimerRef, void*);
          RetainPtr<CFRunLoopTimerRef> m_timer;
  #elif PLATFORM(QT)
          static void timerFired(RunLoop*, int ID);
          int m_ID;
          bool m_isRepeating;
  #elif PLATFORM(GTK)
          static gboolean timerFiredCallback(RunLoop::TimerBase*);
          gboolean isRepeating() const { return m_isRepeating; }
          void clearTimerSource();
          GRefPtr<GSource> m_timerSource;
          gboolean m_isRepeating;
  #elif PLATFORM(EFL)
          static bool timerFired(void* data);
          Ecore_Timer* m_timer;
          bool m_isRepeating;
  #endif
      };
  
      template <typename TimerFiredClass>
      class Timer : public TimerBase {
      public:
          typedef void (TimerFiredClass::*TimerFiredFunction)();
  
          Timer(RunLoop* runLoop, TimerFiredClass* o, TimerFiredFunction f)
              : TimerBase(runLoop)
              , m_object(o)
              , m_function(f)
          {
          }
  
      private:
          virtual void fired() { (m_object->*m_function)(); }
  
          TimerFiredClass* m_object;
          TimerFiredFunction m_function;
      };
  
      class Holder;
  
  private:
      RunLoop();
  
      void performWork();
  
      Mutex m_functionQueueLock;
      Deque<Function<void()> > m_functionQueue;
  
  #if PLATFORM(WIN)
      static bool registerRunLoopMessageWindowClass();
      static LRESULT CALLBACK RunLoopWndProc(HWND, UINT, WPARAM, LPARAM);
      LRESULT wndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
      HWND m_runLoopMessageWindow;
  
      typedef HashMap<uint64_t, TimerBase*> TimerMap;
      TimerMap m_activeTimers;
  #elif PLATFORM(MAC)
      static void performWork(void*);
      RetainPtr<CFRunLoopRef> m_runLoop;
      RetainPtr<CFRunLoopSourceRef> m_runLoopSource;
      int m_nestingLevel;
  #elif PLATFORM(QT)
      typedef HashMap<int, TimerBase*> TimerMap;
      TimerMap m_activeTimers;
      class TimerObject;
      TimerObject* m_timerObject;
  #elif PLATFORM(GTK)
  public:
      static gboolean queueWork(RunLoop*);
      GMainLoop* innermostLoop();
      void pushNestedMainLoop(GMainLoop*);
      void popNestedMainLoop();
  private:
      GRefPtr<GMainContext> m_runLoopContext;
      Vector<GRefPtr<GMainLoop> > m_runLoopMainLoops;
  #elif PLATFORM(EFL)
      bool m_initEfl;
  
      Mutex m_pipeLock;
      OwnPtr<Ecore_Pipe> m_pipe;
  
      Mutex m_wakeUpEventRequestedLock;
      bool m_wakeUpEventRequested;
  
      static void wakeUpEvent(void* data, void*, unsigned int);
  #endif
  };
  
  } // namespace WebCore
  
  #endif // RunLoop_h
  