On Nov 16, 2007 7:58 AM, Andrey Tcherepanov <moyt63c02@sneakemail.com> wrote:
Hello boosters,
Let's say I have a 2 condition variables, and 2 threads that wait on them.
I would like to collapse these 2 threads into 1 by making thread wait on
*either* of these conditions to lock their mutexes (it is not the same
mutex). Is it possible to do, or I better change the logic under the hood?
It can be done, although it might be better not to. Use a counting semaphore in the place of the two mutexes, and when a producer signals the semaphore he should first set a global flag variable to indicate that he's done; when the consumer acquires the semaphore he will check both global variables to see which producer signalled him (or possibly both).
-Max
--
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