Revert "Implement timers by posting delayed tasks"

Source/platform/ThreadTimers.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2009 Google 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
  * 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 ContentType_h
-#define ContentType_h
+#ifndef ThreadTimers_h
+#define ThreadTimers_h
 
 #include "platform/PlatformExport.h"
-#include "wtf/text/WTFString.h"
+#include "platform/SharedTimer.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/HashSet.h"
+#include "wtf/Vector.h"
 
 namespace blink {
 
-class PLATFORM_EXPORT ContentType {
+class TimerBase;
+
+// A collection of timers per thread. Kept in PlatformThreadData.
+class PLATFORM_EXPORT ThreadTimers {
+    WTF_MAKE_NONCOPYABLE(ThreadTimers); WTF_MAKE_FAST_ALLOCATED(ThreadTimers);
 public:
-    explicit ContentType(const String& type);
+    ThreadTimers();
 
-    String parameter(const String& parameterName) const;
-    String type() const;
-    Vector<String> codecs() const;
-    const String& raw() const { return m_type; }
+    // On a thread different then main, we should set the thread's instance of the SharedTimer.
+    void setSharedTimer(WTF::PassOwnPtr<SharedTimer>);
+
+    Vector<TimerBase*>& timerHeap() { return m_timerHeap; }
+
+    void updateSharedTimer();
+    double nextFireTime() const { return m_pendingSharedTimerFireTime; }
+
 private:
-    String m_type;
+    static void sharedTimerFired();
+
+    void sharedTimerFiredInternal();
+
+    Vector<TimerBase*> m_timerHeap;
+    OwnPtr<SharedTimer> m_sharedTimer;
+    bool m_firingTimers; // Reentrancy guard.
+    double m_pendingSharedTimerFireTime;
 };
 
-} // namespace blink
+}
 
-#endif // ContentType_h
+#endif