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Re: pthread_cond_wait waking up spuriously?

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  Re: pthread_cond_wait waking up spuriously? aekkach4444@gmail.com - 2020-03-18 18:03 -0700
    Re: pthread_cond_wait waking up spuriously? Bonita Montero <Bonita.Montero@gmail.com> - 2020-03-19 06:50 +0100

#5662 — Re: pthread_cond_wait waking up spuriously?

Am Dienstag, 1. Mai 2001 21:57:08 UTC+7 schrieb Vincent Predoehl:
> I saw this in the man pages for pthread_cond_wait:
> 
> When using condition variables there is always a boolean predicate
> involving shared variables associated with each condition wait that is
> true if the thread should proceed. Spurious wakeups from the
> pthread_cond_wait() or pthread_cond_timedwait() functions may occur.
> Since the return from pthread_cond_wait() or pthread_cond_timedwait()
> does not imply anything about the value of this predicate, the predicate
> should be re-evaluated upon such return.
> 
> Can anyone explain to me why this is so?
> 
> Thanks,
> --
> Vincent

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#5664

Also consider stolen wakeups !

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