I am assuming once a detached thread reaches the end of its code block it should automatically quit and the OS should recover that memory?

I'm really not an expert here, but I don't think that's the case, at least not always. The OS probably doesn't have any idea about which parts of the memory is associated to which user-level thread, and thus can't clean up. It does know about processes though, which is why I recommended them over threads.

In reply to Re^3: Multithreaded memory usage by moritz
in thread Multithreaded memory usage by bingohighway

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