Subject: Re: Threading problems
To: Steven J. Dovich <>
From: Nathan J. Williams <>
List: tech-userlevel
Date: 11/24/2004 08:16:15
"Steven J. Dovich" <> writes:

> Solaris has its own problems in with demand loading a threads
> dependent object at run-time.  They have a libthread implementation
> of sigaction that replaces the libc version, and loading a threaded
> object into a non-threaded application "forgets" what the previously
> installed handler was. This has broken the signal management protocol
> in a commercial application that I work with.

Our libpthread has this problem too, now that you mention it.

> To solve the pkgsrc issues, you cannot portably dlopen() a threaded
> object from a non-threaded application. Threads support has to be
> in place before main() is called, and probably before C++ static
> constructors get invoked.

Right. "Just Say No"

        - Nathan