From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rotem Shacham" To: "Posix Mailing list" Subject: RE: posix msg queues Date: Tue, 07 Aug 2001 08:20:00 -0000 Message-id: X-SW-Source: 2001/msg00102.html 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 =======================================