So, if the other thread is still busy, and hasn't looped back to its cond_wait(), by the time 'this' thread calls cond_signal(), then when that other thread DOES reach its cond_wait() it'll block.
The threads cannot both hold the lock. One must sit in cond_wait() while the other is working.

In reply to Re^12: Threads sharing global variable (disingenous) by Anonymous Monk
in thread Threads sharing global variable by Anonymous Monk

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