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POis there a way to still get which queue I am on instead of dispatch_get_current_queue?
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  1. POis there a way to still get which queue I am on instead of dispatch_get_current_queue?
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    copied!<p>My problem is very simple</p> <pre><code>+ (void) SpecialDispatchSyncTo:(dispatch_queue_t)iQueue DispatchBlock:(dispatch_block_t)block { if (dispatch_get_current_queue() == iQueue) { block(); } else { dispatch_sync(iQueue, block); } } </code></pre> <p>I use this bit of code to increase performance of some of my apps.</p> <p>It's use is fairly obvious from the code - when I am dispatching to a specific queue it directly invokes the block instead of going through the dispatcher. </p> <p>now my problem is with the ios 6 deprecation of the get_current_queue function, any ideas how to retain this functionality with ios 6 + ?</p> <p>edit:</p> <p>This isn't a duplicate of <a href="https://stackoverflow.com/questions/13237417/alternatives-to-dispatch-get-current-queue-for-completion-blocks-in-ios-6">Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6</a></p> <p>To better explain myself, and unlike the linked duplicate looking question... I have no desire to run the block on the "caller method's queue"... rather I want to optimise the dispatch(I'm overriding the normal dispatch methods in essence) by not dispatching to a queue IF I'm already on that queue.</p> <p>For example, consider the scenario where function a (which is a UI event callback) and function b (background low priority queue) both call function c, which among other things needs to dispatch a block to the "background low priority queue"... a pointless dispatch if I'm in the flow of function b -> function c... hence my optimisation. This improves performance I guarantee it, and I'll implement my own "get current queue" if needed by enhancing the runloop object but I'm not sure I want to go down that path and wanted to see if someone has ideas how to do it.</p>
 

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