I am using boost 1.41.0. Is there a way to use boost to find how many people are waiting on the lock?
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I am using boost 1.41.0. Is there a way to use boost to find how many people are waiting on the lock?
No: there is no way to get a reliable answer as it could change before the function returns, and Boost’s interface doesn’t provide an unreliable method either.
If you want such a thing, you’ll need to implement your own thread-safe counter alongside the mutex; off the top of my head I’m not sure that you could do that reliably either, but you could quite easily distinguish between “approximately none”, “a few” and “lots” if that’s good enough for your needs.