1/* 2 * Copyright (C) 2006 Apple Computer, 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 COMPUTER, 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 COMPUTER, 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 SharedTimer_h 27#define SharedTimer_h 28 29#include <wtf/FastAllocBase.h> 30#include <wtf/Noncopyable.h> 31 32namespace WebCore { 33 34 // Each thread has its own single instance of shared timer, which implements this interface. 35 // This instance is shared by all timers in the thread. 36 // Not intended to be used directly; use the Timer class instead. 37 class SharedTimer { 38 WTF_MAKE_NONCOPYABLE(SharedTimer); WTF_MAKE_FAST_ALLOCATED; 39 public: 40 SharedTimer() { } 41 virtual ~SharedTimer() {} 42 virtual void setFiredFunction(void (*)()) = 0; 43 44 // The fire interval is in seconds relative to the current monotonic clock time. 45 virtual void setFireInterval(double) = 0; 46 virtual void stop() = 0; 47 }; 48 49 50 // Implemented by port (since it provides the run loop for the main thread). 51 // FIXME: make ports implement MainThreadSharedTimer directly instead. 52 void setSharedTimerFiredFunction(void (*)()); 53 void setSharedTimerFireInterval(double); 54 void stopSharedTimer(); 55 56 // Implementation of SharedTimer for the main thread. 57 class MainThreadSharedTimer : public SharedTimer { 58 public: 59 virtual void setFiredFunction(void (*function)()) 60 { 61 setSharedTimerFiredFunction(function); 62 } 63 64 virtual void setFireInterval(double interval) 65 { 66 setSharedTimerFireInterval(interval); 67 } 68 69 virtual void stop() 70 { 71 stopSharedTimer(); 72 } 73 }; 74 75} // namespace WebCore 76 77#endif // SharedTimer_h 78