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2014/10/15 ¤U¤È 10:07:02
iphone Programming Glossary: dispatch_semaphore_waitHow do I correctly use ABAddressBookCreateWithOptions method in iOS 6? http://stackoverflow.com/questions/12083643/how-do-i-correctly-use-abaddressbookcreatewithoptions-method-in-ios-6 addressBook ^ bool granted CFErrorRef error accessGranted granted dispatch_semaphore_signal sema dispatch_semaphore_wait sema DISPATCH_TIME_FOREVER dispatch_release sema else we're on iOS 5 or older accessGranted YES if accessGranted NSArray..
NSURLConnection blocking wrapper implemented with semaphores [closed] http://stackoverflow.com/questions/13733124/nsurlconnection-blocking-wrapper-implemented-with-semaphores dispatch_semaphore_create 0 _finished NO return self void consume void ^ id block BOOL finished NO while finished dispatch_semaphore_wait consumerSemaphore DISPATCH_TIME_FOREVER finished _finished if finished block _object dispatch_semaphore_signal producerSemaphore.. producerSemaphore void produce id object _object object _finished NO dispatch_semaphore_signal consumerSemaphore dispatch_semaphore_wait producerSemaphore DISPATCH_TIME_FOREVER void finish _finished YES dispatch_semaphore_signal consumerSemaphore void dealloc..
UITableView & UIScrollview stop cocos2d animations http://stackoverflow.com/questions/15185720/uitableview-uiscrollview-stop-cocos2d-animations actions pauses . The question is what is the reason of such freezing and how can i avoid it void mainLoop id sender if dispatch_semaphore_wait frameRenderingSemaphore DISPATCH_TIME_NOW 0 return if self.useCocoaFriendlyRendering dispatch_sync frameRenderingDispatchQueue.. properly is to improve the cocos2d render loop in CCDirectorDisplayLink with a semaphore void mainLoop id sender if dispatch_semaphore_wait frameRenderingSemaphore DISPATCH_TIME_NOW 0 return if useCocoaFriendlyRendering dispatch_async frameRenderingDispatchQueue..
http://stackoverflow.com/questions/19027118/fetch-contacts-in-ios-7 addressBook ^ bool granted CFErrorRef error accessGranted granted dispatch_semaphore_signal sema dispatch_semaphore_wait sema DISPATCH_TIME_FOREVER else we're on iOS 5 or older accessGranted YES if accessGranted #ifdef DEBUG NSLog @ Fetching..
CADisplayLink OpenGL rendering breaks UIScrollView behaviour http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour to the context at the same time. Then within your CADisplayLink callback you can use code like the following if dispatch_semaphore_wait frameRenderingSemaphore DISPATCH_TIME_NOW 0 return dispatch_async openGLESContextQueue ^ EAGLContext setCurrentContext context..
Using Grand Central Dispatch, how can I check if there is a block already running? http://stackoverflow.com/questions/6694439/using-grand-central-dispatch-how-can-i-check-if-there-is-a-block-already-runnin takes longer than 1 60th of a second to render . I describe some of this in my answer here using the following code if dispatch_semaphore_wait frameRenderingSemaphore DISPATCH_TIME_NOW 0 return dispatch_async openGLESContextQueue ^ EAGLContext setCurrentContext context..
Wait for assetForURL blocks to be completed http://stackoverflow.com/questions/7234445/wait-for-assetforurl-blocks-to-be-completed
Why does this code cause “EXC_BAD_INSTRUCTION”? http://stackoverflow.com/questions/8287621/why-does-this-code-cause-exc-bad-instruction does this code cause &ldquo EXC_BAD_INSTRUCTION&rdquo dispatch_semaphore_t aSemaphore dispatch_semaphore_create 1 dispatch_semaphore_wait aSemaphore DISPATCH_TIME_FOREVER dispatch_release aSemaphore When the program runs to dispatch_release aSemaphore it will.. does I can see that it stores the value passed in to both aSemaphore 32 and aSemaphore 36 . I also found that dispatch_semaphore_wait and dispatch_semaphore_signal touch the value at aSemaphore 32 to increment and decrement it. This means that the reason..
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