Subj : Re: NPTL and sigwait() problem under linux
To   : comp.programming.threads
From : Daniele
Date : Wed Aug 17 2005 03:28 am

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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