1/* 2 * Copyright (C) 2006, 2010, 2011, 2013 Apple 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 INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25#import "config.h" 26#import "SharedTimer.h" 27 28#import "WebCoreThread.h" 29#import "WebCoreThreadRun.h" 30#import <wtf/Assertions.h> 31 32using namespace WebCore; 33 34namespace WebCore { 35static CFRunLoopTimerRef sharedTimer; 36static void timerFired(CFRunLoopTimerRef, void*); 37 38static void applicationDidBecomeActive(CFNotificationCenterRef, void*, CFStringRef, const void*, CFDictionaryRef) 39{ 40 WebThreadRun(^{ 41 if (!sharedTimer) 42 return; 43 44 stopSharedTimer(); 45 timerFired(0, 0); 46 }); 47} 48 49typedef void (*SharedTimerFiredFunction)(); 50static SharedTimerFiredFunction sharedTimerFiredFunction; 51 52void setSharedTimerFiredFunction(SharedTimerFiredFunction function) 53{ 54 ASSERT(!sharedTimerFiredFunction || sharedTimerFiredFunction == function); 55 56 sharedTimerFiredFunction = function; 57} 58 59static void timerFired(CFRunLoopTimerRef, void*) 60{ 61 @autoreleasepool { 62 sharedTimerFiredFunction(); 63 } 64} 65 66void setSharedTimerFireInterval(double interval) 67{ 68 ASSERT(sharedTimerFiredFunction); 69 70 if (sharedTimer) { 71 CFRunLoopTimerInvalidate(sharedTimer); 72 CFRelease(sharedTimer); 73 } 74 75 CFAbsoluteTime fireDate = CFAbsoluteTimeGetCurrent() + interval; 76 sharedTimer = CFRunLoopTimerCreate(0, fireDate, 0, 0, 0, timerFired, 0); 77 CFRunLoopAddTimer(WebThreadRunLoop(), sharedTimer, kCFRunLoopCommonModes); 78 79 static bool registeredForApplicationNotification = false; 80 if (!registeredForApplicationNotification) { 81 registeredForApplicationNotification = true; 82 CFNotificationCenterRef notificationCenter = CFNotificationCenterGetLocalCenter(); 83 CFNotificationCenterAddObserver(notificationCenter, 0, applicationDidBecomeActive, CFSTR("UIApplicationDidBecomeActiveNotification"), NULL, CFNotificationSuspensionBehaviorCoalesce); 84 } 85} 86 87void stopSharedTimer() 88{ 89 if (!sharedTimer) 90 return; 91 92 CFRunLoopTimerInvalidate(sharedTimer); 93 CFRelease(sharedTimer); 94 sharedTimer = 0; 95} 96 97} // namespace WebCore 98