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qyn · Feb 25, 2003, 02:41 PM

Actually, despite Apple's claims to the contrary, I'm pretty sure SysV IPC is not supported in OS X. (Using msgget() returns "function not supported".)

I keep seeing references that I need to use these "Mach IPC" functions instead, but I can't seem to find any real documentation. Has anyone used these functions? Any good documentation anywhere?

smeger · Feb 25, 2003, 04:56 PM

Docs for the Mach stuff are at http://developer.apple.com/techpubs/...ach/index.html

qyn · Feb 25, 2003, 05:03 PM

Originally posted by smeger:
Docs for the Mach stuff are at http://developer.apple.com/techpubs/...ach/index.html

Thanks for the link, but I saw those before.

What I'd like to see is some sort of usage summary, sample code, or some such thing. All I've been able to find is a high level overview, like the one above.

Not that I'm in love with Mach IPC, I just need a replacement for the SysV stuff...

smeger · Feb 25, 2003, 05:57 PM

Originally posted by qyn:
Thanks for the link, but I saw those before.

What I'd like to see is some sort of usage summary, sample code, or some such thing. All I've been able to find is a high level overview, like the one above.

Not that I'm in love with Mach IPC, I just need a replacement for the SysV stuff...

I don't know of what you're looking for, but I do know that Apple recommends against using raw Mach threads in quite a few places on their developer site. Have you considered using posix threads instead?

Here are a couple of links to pthread stuff, just because I happen to be using 'em right now for the 1st time myself:

http://home.t-online.de/home/Andreas.Steinmetz/unix/pthreads.html
http://www.math.arizona.edu/swig/pthreads/threads.html

qyn · Feb 25, 2003, 08:50 PM

Originally posted by smeger:
I don't know of what you're looking for, but I do know that Apple recommends against using raw Mach threads in quite a few places on their developer site. Have you considered using posix threads instead?

Here are a couple of links to pthread stuff, just because I happen to be using 'em right now for the 1st time myself:
http://home.t-online.de/home/Andreas.Steinmetz/unix/pthreads.html

http://www.math.arizona.edu/swig/pthreads/threads.html

Oh, sorry, maybe I wasn't clear. I'm not interested in how to do threading, but how to do communication between different threads or processes. SysV IPC allowed different processes to asynchronously message each other, which is what I'm trying to do.

Angus_D · Feb 26, 2003, 11:53 AM

SysV IPC definitely wasn't supported on 10.1, although I have a vague recollection of claims it exists on 10.2.

Mach messaging might well be the way to go. However, you might find the higher-level CoreFoundation functions are easier, such as CFMessagePort.

Gul Banana · Mar 1, 2003, 01:15 AM

Hey, there's always pipes...