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7.3. Condvars
A
condvar, or condition variable, is a POSIX thread construct that waits for a particular condition to be achieved before proceeding. In general the condition being signaled pertains to the state of data that the thread shares with another thread. For example, a condvar can be used to signal that a data entry has been put into a processing queue and a thread waiting to process data from the queue can now proceed.
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