Re: NPTL work committed to jimb-rda-nptl-branch

[Jim Blandy <jimb at redhat dot com>]

Daniel Jacobowitz <drow@false.org> writes:

> On Tue, Nov 23, 2004 at 01:12:57AM -0500, Jim Blandy wrote:
> > + /* Under NPTL, LWP's simply disappear, without becoming a zombie or
> > +    producing any wait status.  At the kernel level, we have no way of
> > +    knowing that the LWP's PID is now free and may be reused ---
> > +    perhaps by an entirely different program!  So we need to use the
> > +    death events from libthread_db to help us keep our LWP table clean.
> 
> FYI, that should not be true.  I think there was at least one broken
> Red Hat kernel which behaved this way, but nowadays the debugger should
> see exit events for LWPs.

This code isn't using ptrace events, though.  This version is still
trying to struggle along with waitpid and thread_db.