[730] in Pthreads mailing list archive
Re: About signal handler per pthread
daemon@ATHENA.MIT.EDU (Nick Godbey)
Tue Oct 21 14:43:07 1997
Date: Tue, 21 Oct 1997 13:08:37 -0500
From: Nick Godbey <Nick.Godbey@es.atl.sita.int>
To: Zhenhai Duan <duan@cs.umn.edu>
Cc: pthreads@MIT.EDU, proven@MIT.EDU
Zhenhai Duan wrote:
> Hello,
>
> I am a new user of the pthread(POSIX thread), and I do not
> know that how let each thread handle signal seperately, Maybe
> the following example can make it more clearly.
>
> A, B ,and C are three pthread of one process,
> A send SIGUSR1 to B, and C,
>
> In B:
> BHandler() is function to handle SIGUSR1;
> sigaction(....);
> In C:
> CHandler() is function to handle SIGUSR1;
> sigaction(...);
>
> in C:
> pthread_kill(Bpthread, SIGUSR1);
> pthread_kill(Cpthread, SIGUSR1);
>
> But it seems that only B or C can handle SIGUSR1.
>
> Please give some information. Thank you!
>
handlers are process level. The last handler set for SIGUSR1 will be
called in
each case. However, the desired thread is the one interupted.
-nick
