Date: Tue, 5 Feb 2002 13:06:23 +1100 (EST) From: callum.gibson@db.com To: hackers@freebsd.org Subject: pthread_sigmask problem Message-ID: <20020205020623.75168.qmail@merton.aus.deuba.com>
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Hi all,
I have an application which attempts to block all signals using
pthread_sigmask(). I'm aware that this only works on the current thread,
however this call occurs before any other threads are created and so
should be inherited. I call it as follows:
sigset_t signalSet;
(void)sigfillset(&signalSet);
(void)pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
However, it seems that signals such as SIGPIPE, SIGINT, etc will still
kill the process. I also tried replacing the pthread_sigmask call with
sigprocmask to see if it made any difference, which it didn't.
The only other relevant info I can think of, is that I start up another
thread specifically for catching SIGTERM, thusly:
(void)sigemptyset(&signalSet);
(void)sigaddset(&signalSet, SIGTERM);
if (sigwait(&signalSet, &signo) < 0 || signo != SIGTERM)
/* some error handling */;
/* shutdown cleanly */
etc.
This part still works as expected.
Additionally, I have the same code working under Solaris threads (not pthreads
on Solaris) fine, the only relevant change being the call thr_sigsetmask
instead of pthread_sigmask.
The same behaviour is exhibited on 4.3-RELEASE and 4.4-RELEASE.
Any ideas on what is wrong?
regards,
Callum
(c)2002 Callum Gibson callum.gibson@db.com
Global Markets IT, Deutsche Bank, Australia 61 2 9258 1620
### The opinions in this message are mine and not Deutsche's ###
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