On 02/27/2011 18:00, David Xu wrote:
I think in normal case, pthread_cond_signal will wake up one thread,
but other events for example, UNIX signal and fork() may interrupt
a thread sleeping in kernel, and cause pthread_cond_wait to return
to userland, this is called spurious wakeup, and other events, I
can not think of yet, but I believe they exist.

Does this mean that pthread_cond_signal can also return EINTR? This isn't in pthread_cond_signal(3) either.

Is this the case that all system calls should be assumed to be able to return EINTR or only those that have EINTR in their man pages?

Yuri
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