I have a MyOperation, subclass of NSOperation.

MyOperation does:
        create an NSOperationQueue 
        add a few MyOperations to this queue
        waitUntilAllOperationsAreFinished
(obviously this recursion stops at some point - I do not create an infinite 
number of operations).

The good thing: this is very energy saving: cpu utilisation = 0%
The bad thing: nothing gets done.

Using Activity Monitor to sample my app I see:

 "Dispatch Thread Soft Limit: 64 reached in 2152 of 2152 samples -- too many 
dispatch threads blocked in synchronous operations"

Using trial and error, I managed to not create too many operations, so that 
this blocking does not happen anymore.

But: Is there some way to find out programmatically at which point my app 
should stop adding operations?

Either with NSOperationQueue or GCD.

10.9.2

Gerriet.


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