Subj : Re: NPTL and sigwait() problem under linux
To   : comp.programming.threads
From : John Hickin
Date : Wed Aug 17 2005 09:31 am

I did stop reading way to early -- sorry about that. Will it work if you run
it in a debugger?

"Daniele" <arkaam@everyday.com> wrote in message
news:uwvMe.24904$hV3.9429@nntpserver.swip.net...
> John Hickin wrote:
> > Stopping right here (being lazy):
> >      <from sun's manpage on pthread_sigmask>
> >      If sigprocmask(2) is used in a  multi-threaded  program,  it
> >      will be the same as if thr_sigsetmask() or pthread_sigmask()
> >      has been called.  POSIX leaves the semantics of the call  to
> >      sigprocmask(2)  unspecified  in a multi-threaded process, so
> >      programs that care about POSIX portability should not depend
> >      on this semantic.
> >
> > So try pthread_sigmask instead.
> >
> You've stopped reading too early, I've already tried :-/
>
> Maybe it's a problem with my own system, I'm using libc6 (glibc) version
> 2.3.2, with linux kernel 2.6.11.7 and 2.6.5, using nptl.
> Running the program with LinuxThreads, typing
>
> # LD_ASSUME_KERNEL=2.4.21 ./myprogram
>
> works perfectly (but, of course, LinuxThreads is not fully standard
> compliant).
>
> Daniele

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