From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Scott McCaskill" <scott@magruder.org>
To: <pthreads-win32@sourceware.cygnus.com>
Subject: Re: posix msg queues
Date: Tue, 07 Aug 2001 09:00:00 -0000
Message-id: <006401c11f5a$1bed0380$3e0f020a@hand.local>
References: <MEEGJNAGDGABKCMJEPIHIEKKCAAA.rotem.shacham@bluesoft-inc.com>
X-SW-Source: 2001/msg00104.html

try doing a search for "posix message queue" on google

----- Original Message -----
From: "Rotem Shacham" <rotem.shacham@bluesoft-inc.com>
To: "Posix Mailing list" <pthreads-win32@sourceware.cygnus.com>
Sent: Tuesday, August 07, 2001 11:17 AM
Subject: RE: posix msg queues


> Hi,
> Can you please give me a lead as to were can I find some info on Posix MQ
?
>
> 10x
> Rotem.
>
> -----Original Message-----
> From: pthreads-win32-owner@sources.redhat.com
> [ mailto:pthreads-win32-owner@sources.redhat.com]On Behalf Of Aurelio
Medina
> Sent: Tuesday, August 07, 2001 4:27 PM
> To: 'Phil Crescioli'
> Cc: 'pthreads-win32@sourceware.cygnus.com'
> Subject: RE: posix msg queues
>
>
> Phil,
>
> As Ross J. pointed out earlier the PTHREAD_PROCESS_SHARED attribute is not
> yet available.  What this means for the POSIX MQ code that I provided is
> that it is not safe to use on Win32 if you have more than one process
using
> the same MQ.  It is still safe on other systems that support this
attribute
> but do not have a MQ library available.
>
> NOTE: I use POSIX MQ in my Win32 apps to queue data between two threads in
> the same process.  It is safe to use in this fashion.  Hopefully the
> PTHREAD_PROCESS_SHARED attribute will become available later.
>
> Aurelio
>
> -----Original Message-----
> From: Phil Crescioli [ mailto:pcrescio@dsrnet.com ]
> Sent: Tuesday, August 07, 2001 7:19 AM
> To: Aurelio Medina
> Cc: 'pthreads-win32@sourceware.cygnus.com'
> Subject: posix msg queues
>
>
> Aurelio,
>
> Got your posix tester code working on solaris2.7, hpux11.0, and windoze
> 2000.
> Thanks for making the posix port to win32 painless!  Actually I modified
the
> tester.c
> code to send a data structure with the message buffer as one of the fields
> in the
> structure, as my project requires, and every msg receive I go through a
> sequence
> checking algorithm to make sure I dont drop data, etc...
>
> I'm now breaking this modified tester.c into two processes where one is a
> sender
> and the other a receiver.  All compiles and runs, but the receiver never
> gets the data.
> Im looking at mq_open on Solaris and trying to undertsand what might be
the
> reason
> why the reciever process never gets the data from the sender process?
>
> Any ideas?  Know of any tutorials on posix ipc out?
>
> Thanks,
> Phil
>
>
> =======================================
> =======================================
> Phil Crescioli
> Software Engineer
> Digital System Resources    Innovative solutions
> (o)703-263-7405                  for today's systems
> (c)703-408-5198                     and tomorrows
> pcrescioli@dsrnet.com             applications..
> http://www.dsrnet.com
> =======================================
>                              Resume
> http://users.erols.com/madisons/resume/resume.html
> =======================================
>
>