diff -r 000000000000 -r 4f2f89ce4247 WebCore/platform/SharedTimer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/platform/SharedTimer.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2006 Apple Computer, 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 SharedTimer_h
+#define SharedTimer_h
+
+#include <wtf/Noncopyable.h>
+
+namespace WebCore {
+
+    // Each thread has its own single instance of shared timer, which implements this interface.
+    // This instance is shared by all timers in the thread.
+    // Not intended to be used directly; use the Timer class instead.
+    class SharedTimer : public Noncopyable {
+    public:
+        virtual ~SharedTimer() {}
+        virtual void setFiredFunction(void (*)()) = 0;
+
+        // The fire time is relative to the classic POSIX epoch of January 1, 1970,
+        // as the result of currentTime() is.
+        virtual void setFireTime(double) = 0;
+        virtual void stop() = 0;
+    };
+
+
+    // Implemented by port (since it provides the run loop for the main thread).
+    // FIXME: make ports implement MainThreadSharedTimer directly instead.
+    void setSharedTimerFiredFunction(void (*)());
+    void setSharedTimerFireTime(double);
+    void stopSharedTimer();
+
+    // Implementation of SharedTimer for the main thread.
+    class MainThreadSharedTimer : public SharedTimer {
+    public:
+        virtual void setFiredFunction(void (*function)())
+        {
+            setSharedTimerFiredFunction(function);
+        }
+        
+        virtual void setFireTime(double fireTime)
+        {
+            setSharedTimerFireTime(fireTime);
+        }
+        
+        virtual void stop()
+        {
+            stopSharedTimer();
+        }
+    };
+
+} // namespace WebCore
+
+#endif // SharedTimer_h