Number of threads and thread numbers in Grand Central Dispatch

Posted by raphgott on Stack Overflow See other posts from Stack Overflow or by raphgott
Published on 2010-03-16T16:13:32Z Indexed on 2010/05/12 15:54 UTC
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I am using C and Grand Central Dispatch to parallelize some heavy computations. How can I get the number of threads used by GCD? Also is it possible to know on which thread a piece of code is currently running on? Basically I'd like to use sprng (parallel random numbers) with multiple streams and for that I need to know what stream id to use (and therefore what thread is being used).

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Number of threads and thread numbers in Grand Central Dispatch

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