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 "platform/PlatformExport.h" 30 #include "wtf/FastAllocBase.h" 31 #include "wtf/Noncopyable.h" 32 33 namespace WebCore { 34 35 // Each thread has its own single instance of shared timer, which implements this interface. 36 // This instance is shared by all timers in the thread. 37 // Not intended to be used directly; use the Timer class instead. 38 class PLATFORM_EXPORT SharedTimer { 39 WTF_MAKE_NONCOPYABLE(SharedTimer); WTF_MAKE_FAST_ALLOCATED; 40 public: SharedTimer()41 SharedTimer() { } ~SharedTimer()42 virtual ~SharedTimer() {} 43 virtual void setFiredFunction(void (*)()) = 0; 44 45 // The fire interval is in seconds relative to the current monotonic clock time. 46 virtual void setFireInterval(double) = 0; 47 virtual void stop() = 0; 48 }; 49 50 51 PLATFORM_EXPORT void setSharedTimerFiredFunction(void (*)()); 52 PLATFORM_EXPORT void setSharedTimerFireInterval(double); 53 PLATFORM_EXPORT void stopSharedTimer(); 54 55 class PLATFORM_EXPORT MainThreadSharedTimer : public SharedTimer { 56 public: setFiredFunction(void (* function)())57 virtual void setFiredFunction(void (*function)()) OVERRIDE 58 { 59 setSharedTimerFiredFunction(function); 60 } 61 setFireInterval(double interval)62 virtual void setFireInterval(double interval) OVERRIDE 63 { 64 setSharedTimerFireInterval(interval); 65 } 66 stop()67 virtual void stop() OVERRIDE 68 { 69 stopSharedTimer(); 70 } 71 }; 72 73 } // namespace WebCore 74 75 #endif // SharedTimer_h 76