2014/10/15 下午 10:07:02

iphone Programming Glossary: dispatch_semaphore_create

How do I correctly use ABAddressBookCreateWithOptions method in iOS 6?

http://stackoverflow.com/questions/12083643/how-do-i-correctly-use-abaddressbookcreatewithoptions-method-in-ios-6

BOOL accessGranted NO if ABAddressBookRequestAccessWithCompletion NULL we're on iOS 6 dispatch_semaphore_t sema dispatch_semaphore_create 0 ABAddressBookRequestAccessWithCompletion addressBook ^ bool granted CFErrorRef error accessGranted granted dispatch_semaphore_signal..

NSURLConnection blocking wrapper implemented with semaphores [closed]

http://stackoverflow.com/questions/13733124/nsurlconnection-blocking-wrapper-implemented-with-semaphores

NSObject _object @end @implementation ProducerConsumerLock id init if self super init consumerSemaphore dispatch_semaphore_create 0 producerSemaphore dispatch_semaphore_create 0 _finished NO return self void consume void ^ id block BOOL finished NO while.. ProducerConsumerLock id init if self super init consumerSemaphore dispatch_semaphore_create 0 producerSemaphore dispatch_semaphore_create 0 _finished NO return self void consume void ^ id block BOOL finished NO while finished dispatch_semaphore_wait consumerSemaphore..

UITableView & UIScrollview stop cocos2d animations

http://stackoverflow.com/questions/15185720/uitableview-uiscrollview-stop-cocos2d-animations

frameInterval displayLink addToRunLoop NSRunLoop currentRunLoop forMode NSRunLoopCommonModes frameRenderingSemaphore dispatch_semaphore_create 1 frameRenderingDispatchQueue dispatch_queue_create render DISPATCH_QUEUE_SERIAL And released in dealloc void dealloc dispatch_release..

Fetch Contacts in iOS 7

http://stackoverflow.com/questions/19027118/fetch-contacts-in-ios-7

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour

frameRenderingSemaphore where frameRenderingSemaphore is created earlier as follows frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing. That way..

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

frameRenderingSemaphore where frameRenderingSemaphore is created earlier as follows frameRenderingSemaphore dispatch_semaphore_create 1 If you create a similar semaphore for each tab's download operations you could do a check to make sure that more than..

Wait for assetForURL blocks to be completed

http://stackoverflow.com/questions/7234445/wait-for-assetforurl-blocks-to-be-completed

objective c alasset alassetslibrary share improve this question GCD semaphore approach dispatch_semaphore_t sema dispatch_semaphore_create 0 dispatch_queue_t queue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 for NSURL url in self.assetUrls dispatch_async..

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.. them into r1 . The compare is then effectively comparing the value of aSemaphore 32 and aSemaphore 36 . Reading what dispatch_semaphore_create 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.. means that the reason it's breaking is because the current value of the semaphore is less than the value passed into dispatch_semaphore_create . So you can't dispose of a semaphore when the current value is less than the value it was created with. If you've read..