Subj : Re: PThreads/LinuxThreads & setitimer()
To   : comp.programming.threads
From : steve
Date : Sun Jan 23 2005 01:29 am

In article <cau8rs$2aq0$1@biggoron.nerim.net>,
Jean-Christophe ARNU  <jx@adorenepasetrederangeparlespamtuxfarm.org> wrote:
>
>	I thought my thread would have been woke up by SIGALRM but no SIGALRM 
>seems to be raised at all! If I use sigaction() with a signal handler 
>for SIGALRM, handler is correctly called thus  signal is generated!
>
>	Can anybody tell me where is the problem (even conceptual)? How would 
>you create accurate timers with pthreads?

[ snip ]

On brief examination, your code looks OK.  However, there are bugs in
older Linux distributions where the thread that issues the setitimer()
must also be the thread that calls sigwait().

I believe this has been corrected with the NPTL release, but you
didn't mention what Linux version/distro you're using.
-- 
Steve Watt KD6GGD  PP-ASEL-IA          ICBM: 121W 56' 57.8" / 37N 20' 14.9"
 Internet: steve @ Watt.COM                         Whois: SW32
   Free time?  There's no such thing.  It just comes in varying prices...

.