Which of the following statements about condition variables are true? O (a) Waiting on a condition variable must happen while holding the lock. (b) If a thread signals on a condition variable, and later another thread calls wait() on the same condition variable, the wait() will return immediately

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Which of the following statements
about condition variables are true?
O (a) Waiting on a condition variable must happen
while holding the lock.
(b) If a thread signals on a condition variable, and
later another thread calls wait() on the same
condition variable, the wait() will return
immediately.
O (c) When a thread returns from wait(), it can
assume that the condition it was waiting on has
been satisfied.
O (d) Implementing condition variables requires
coordination with the thread scheduler.
Transcribed Image Text:Which of the following statements about condition variables are true? O (a) Waiting on a condition variable must happen while holding the lock. (b) If a thread signals on a condition variable, and later another thread calls wait() on the same condition variable, the wait() will return immediately. O (c) When a thread returns from wait(), it can assume that the condition it was waiting on has been satisfied. O (d) Implementing condition variables requires coordination with the thread scheduler.
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