Re: PATCH: Threads and SIGINT

[Joerg Brunsmann <joerg dot brunsmann at FernUni-Hagen dot de>]

Bryce McKinlay wrote:

> Regarding the Solaris thread problems reported by Joerg Brunsmann: I have
> reproduced this on my Solaris x86 installation, and I'm convinced that these
> problems are in fact due to a bug in Solaris rather than anything wrong with our
> code. Solaris 7 (and I presume some 2.6 installations as well, since Joerg
> reports that he is using 2.6) have a broken recursive mutex implementation,
> resulting in calls to pthread_cond_wait never returning because it cannot
> reacquire the mutex.

If I was reporting that I'm using 2.6 I was definitly wrong. I'm using 2.7 where
I see the bug.  Due to coincidence I noticed the solaris bug report as well. I
searched the latest sunsolve CDs but didn't find a patch. So I tried to install 
gcj/libgcj on a Solaris 2.6 machine in order to verify if the problem persists 
with that OS version. But unfortunately gcj compiled programs dump core. I kept
calm because lack of time and christmas/millenium/solaris 8 right around the
corner.

> In order to fix this I think we need to force the use of default, non-recursive
> mutexes on Solaris. I think this could be done with something like "#if defined
> (SOLARIS && HAVE_PTHREAD_MUTEX_SETTYPE) #undef HAVE_PTHREAD_MUTEX_SETTYPE" at
> the top of posix-threads.h, but perhaps there is a better way.

This might be a good temporarely work around. Then we wait for Solaris 8 
or a patch for Solaris 7 or Solaris source code in order to fix it...

Happy christmas,

Jörg