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 32 namespace 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 time is relative to the classic POSIX epoch of January 1, 1970, 45 // as the result of currentTime() is. 46 virtual void setFireTime(double) = 0; 47 virtual void stop() = 0; 48 }; 49 50 51 // Implemented by port (since it provides the run loop for the main thread). 52 // FIXME: make ports implement MainThreadSharedTimer directly instead. 53 void setSharedTimerFiredFunction(void (*)()); 54 void setSharedTimerFireTime(double); 55 void stopSharedTimer(); 56 57 // Implementation of SharedTimer for the main thread. 58 class MainThreadSharedTimer : public SharedTimer { 59 public: 60 virtual void setFiredFunction(void (*function)()) 61 { 62 setSharedTimerFiredFunction(function); 63 } 64 65 virtual void setFireTime(double fireTime) 66 { 67 setSharedTimerFireTime(fireTime); 68 } 69 70 virtual void stop() 71 { 72 stopSharedTimer(); 73 } 74 }; 75 76 } // namespace WebCore 77 78 #endif // SharedTimer_h 79
