I certainly considered using a single guard variable. The problem is that the routine will not know in advance which things will be locked. Further, I wish other threads to be able to work on those things that are not locked (so I don't want to lock the hash itself). The list of which things to lock will change at each call.

It is ok, I think, for the signal loop to be interrupted, as other threads will be cond_wait()'ing on one or more things that they wish to work on.

And yes, I realize that I will need to be extra careful to avoid deadlocks. I am familiar with this from fork/flock. :P

-Colin.

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In reply to Re^2: Looping without introducing a block by cmeyer
in thread Looping without introducing a block by cmeyer

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