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fathom88

Limit on # of threads w/ CreateThread??

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Does Windows 2000 limit the number of threads that one can create in a single process?? I tested out a simple app that created threads with CreateThread() in a loop. After 24 threads, the threads didn't seem to work but were not NULL. Any suggestions?

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One is limited to about 2^16 - 2 handles per process (of any kind); each thread defaults to a 1 MiB stack, so one has a further limit of about 2048 (or 3072) threads per process (less the memory overheads of the process itself and any OS libraries). Creating hundreds of threads in a single process is certainly doable.

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