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2014/10/15 ¤U¤È 10:11:01
iphone Programming Glossary: libdispatchDifference between NSOperation and NSInvocationOperation? http://stackoverflow.com/questions/12908886/difference-between-nsoperation-and-nsinvocationoperation operation queue executes its operations either directly by running them on secondary threads or indirectly using the libdispatch library also known as Grand Central Dispatch 3.Which one is the best I think the word Best may vary as per your situations..
How to achieve concurrent task through NSOperation? [closed] http://stackoverflow.com/questions/12910479/how-to-achieve-concurrent-task-through-nsoperation
iphone ios running in separate thread http://stackoverflow.com/questions/3869217/iphone-ios-running-in-separate-thread the first. iphone multithreading ios thread safety share improve this question In my opinion the best way is with libdispatch aka Grand Central Dispatch GCD . It limits you to iOS 4 and greater but it's just so simple and easy to use. The code to..
Video Encoding using AVAssetWriter - CRASHES http://stackoverflow.com/questions/8191840/video-encoding-using-avassetwriter-crashes unnecessarily over your continue condition several times. AVAssetWriterInput provides an alternative mechanism to use libdispatch to process data asynchronously as resources become available requestMediaDataWhenReadyOnQueue usingBlock share improve..
Why does this code cause “EXC_BAD_INSTRUCTION”? http://stackoverflow.com/questions/8287621/why-does-this-code-cause-exc-bad-instruction helps UPDATE It's probably better to look at the source pointed out by JustSid here http opensource.apple.com source libdispatch libdispatch 187.7 src semaphore.c looking at the _dispatch_semaphore_dispose function we see if dsema dsema_value dsema.. It's probably better to look at the source pointed out by JustSid here http opensource.apple.com source libdispatch libdispatch 187.7 src semaphore.c looking at the _dispatch_semaphore_dispose function we see if dsema dsema_value dsema dsema_orig DISPATCH_CLIENT_CRASH..
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