Detecting leaks in Cocoa thread?

I have been wo开发者_C百科rking on an application in Xcode for a while now and had previously detected a lot of memory leaks using Instruments. Fast forward a few months and I have added threading to my application and Instruments will not show any memory leaks even though it has a growing memory footprint.

Does Instruments not detect memory leaks in threads I create? What could be the reason for these leaks flying under the radar?

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Leaks just means objects for which there is no references to said objects. If your app is allocating memory and filling, say, a cache or some global dictionary or whatever, it'll grow unbounded and show nary a leak.

You'll probably want to use Heapshot based analysis to track it down.