c library function to get number of active threads

Question

I'm developing a multi threaded Unix application in C. Is there a simple way to get the count of the number of simultaneously active threads? I don't want to have to write the code to keep track of the number of active thread if it already can be done for me by the library! :-)

I'm using POSIX pthreads, and I'm trying to write as portable as possible code for Unix and Unix-like systems.

Depends on your threading library. What threading library are you using, and on what platform? Clarify the question, please. — Jed Smith
– Jed Smith, Commented Nov 11, 2009 at 5:12

pilcrow · Accepted Answer · 2009-11-11 05:33:30Z

6

No, not in pthreads per se. POSIX Threads tries to specify only primitives or basic utility constructs, and considers even pthread_join a convenience function, not a primitive.

Certain libraries may offer non-portable solutions (look for _np in the name on HP-UX, for instance), but for pthreads per se, you're on your own.

answered Nov 11, 2009 at 5:33

pilcrow

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2 Comments

pilcrow Over a year ago

@anonymous_downvoters, please detail your reasons for the downvotes!

user203766 Over a year ago

Yeah, that was weird. I upvoted this one when I saw the downvotes. Please, give details on why.

Brian Liang · Accepted Answer · 2009-11-11 05:38:47Z

1

You could I guess keep a count of it in the constructor/destructor but make sure you handle it concurrently as to avoid race conditions.

answered Nov 11, 2009 at 5:38

Brian Liang

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