Re: Is this a well-known bug of POXIS pthread_cond_timewait()?

Thanks, DS. So POSIX does has such a bug?
What do you mean "This bug usually occurs because a thread called
pthread_cond_wait when it should not have." I think whether a thread
should call pthread_cond_wait is the merely logic of my problem,
right?

On Sep 29, 11:02 am, David Schwartz <dav...@xxxxxxxxxxxxx> wrote:
On Sep 29, 10:07 am, calvin <chima1...@xxxxxxxxx> wrote:

Thanks, but this has nothing to do with predicater. The threads waits
on a cond "never" wake up, even some other threads broadcasts.
Also, this is rare, and only happens when CPU load is high. In 99.9%
time it works well. That's why I suspect it's a POSIX's bug.

This bug usually occurs because a thread called pthread_cond_wait when
it should not have. You must check the predicate before calling
pthread_cond_wait.

DS

.

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