From: proven AT io DOT proven DOT org (Chris Provenzano)
Subject: Re: pthreads w/ cygwin32
24 Feb 1998 14:59:12 -0800
Message-ID: <199802240951.BAA01285.cygnus.gnu-win32@io.proven.org>
References: <a4afbi6ok8 DOT fsf AT cse DOT ucsc DOT edu>
To: tmk AT cse DOT ucsc DOT edu (Tom M. Kroeger)
Cc: Sven Dietrich <Sven_Dietrich AT trimble DOT com>, gnu-win32 AT cygnus DOT com

>Sven Dietrich <Sven_Dietrich AT Trimble DOT COM> writes:
>
>> 
>> 
>> I have looked at the Pthreads before. Why not try to port those
>> calls to NT's native threads? Those work.

The mapping isn't great and NT limits the number of threads a process
can create to something around 64.

>pthreads was the first draft of the POSIX's user level threads
>standard.  Using the POSIX threads native to NT should work, but
>how do I do this within the cgywin32 development environment?

I'm not sure you want to do this. IMO using the NT POSIX subsystem 
generally doesn't work for anything more than the simplest of applications.

>Re: cygwin32  not being thread safe--
>should this make a difference for user level threads?

Yes, it does. Pthreads is fully preemptable.

I will see about porting pthreads to b19 and getting an alpha out a few
weeks after the b19 release. I did a proof of concept port of pthreads
to b18 so it is possible to get it working. 

CAP
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