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

by chima1979@[EMAIL PROTECTED] Sep 28, 2008 at 08:03 PM

In a large system that is implemented using POSIX thread, a weird
thing happens:
a thread that pthread_cond_timewait() on a condition variable misses
signals, ie. some thread pthread_cond_broadcast() but nobody was waken
up.
This rare problem happens when the system is busy, such as CPU load is
high.

I know POSIX has spurious wakeup problem, ie. wake up without
signaling. But this problem, signaling but not wake up, is different.
Is that a well-known bug of POSIX?

12 Posts in Topic:

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

chima1979@[EMAIL PROTECTE

2008-09-28 20:03:13

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

"Chris M. Thomasson&

2008-09-29 02:58:22

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

calvin <chima1979@[EMA

2008-09-29 10:07:40

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

David Schwartz <davids