Date: Tue, 6 Apr 1999 13:59:40 -0700 From: "Brian O'Shea" <boshea@ricochet.net> To: "Richard Seaman, Jr." <dick@tar.com> Cc: freebsd-questions@freebsd.org Subject: Re: Semaphores Message-ID: <19990406135940.K2844@localdomain> In-Reply-To: <19990406134144.E467@tar.com>; from Richard Seaman, Jr. on Tue, Apr 06, 1999 at 01:41:44PM -0500 References: <Pine.BSF.4.05.9904061145220.353-100000@athome.logicStudios.org> <19990406113121.J2844@localdomain> <19990406134144.E467@tar.com>
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I should correct part of my last posting here:
I wrote:
> > Linux has an implementation of POSIX semaphores, although process-shared
> > semaphores are not supported. I have run Linux programs on FreeBSD
> > (under Linux emulation) that I wrote using the POSIX threads functions
^^^^^^^
> > and they worked just fine (although I didn't test them extensively).
I meant to say "semaphore", not "threads". I have also run programs
in Linux emulation that used LinuxThreads, but I ran into the known
problem with libpthread (in the Linux emulation libs) failing to free
the internal linux thread structures.
On Tue, Apr 06, 1999 at 01:41:44PM -0500, Richard Seaman, Jr. wrote:
> The linux threads "port", which provides native FreeBSD 1-1 "kernel
> threads", also includes the linux POSIX semaphore library you mention.
> See http://lt.tar.com
>
Excellent! Thank you. I have been to the http://lt.tar.com/ site
and read about the FreeBSD kernel thread implementation, however I
did not notice the POSIX semaphore library there. I have been looking
for this for some time and was considering making wrapper functions
around the System V semaphore system calls just to save myself the
trouble of porting some of my programs. You have saved me a lot of
work!
Thanks,
-brian
--
Brian O'Shea
boshea@ricochet.net
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