Subj : Re: sigwait() is not catching SIGUSR1 signal
To   : comp.programming.threads,comp.unix.programmer
From : Marcin 'Qrczak' Kowalczyk
Date : Mon Mar 14 2005 11:29 am

Villy Kruse <vek@station02.ohout.pharmapartners.nl> writes:

> It was mentiond this was RedHat version 9, and this version introduced
> the NPTL version of pthreads, which claims to be more conforming to
> the standard than the old linux threads were.  For old linux kernels
> the pthreads had to use SIGUSR for its internal purpose as no other signals
> were available.  With current kernels this should not be required.

AFAIK SIGUSR{1,2} became available earlier than NPTL, in Linux 2.4
(NPTL requires Linux 2.6).

-- 
   __("<         Marcin Kowalczyk
   \__/       qrczak@knm.org.pl
    ^^     http://qrnik.knm.org.pl/~qrczak/

.