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Date: Fri, 23 Jun 2006 19:10:52 -0400 (EDT)
From: Igor Peshansky <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Rahul Gulati <rgulatius AT yahoo DOT com>
cc: cygwin AT cygwin DOT com
Subject: Re: Issue with shmget
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On Fri, 23 Jun 2006, Rahul Gulati wrote:

> Hi,
>
> I am new to cygwin and trying to port existng Linux
> based implementation of shared memory on cygwin.
>
> I am having issues with shmget call. I tried to debug
> and found out that everytime I try to call shmget
> function I get an error and the main thread exits:
> Program exited with code 06000
>
> I checked cygwin documentation and mailing lists:
> I have ipc-daemon2 running

FYI, ipc-daemon2 is now obsolete, and unless you have an unofficial
package that depends on it, I suggest you stop it, as it's only wasting
system resources.

> cygserver is also running with default options which
> includes :
> XSI IPC Shared Memory support.
>
> Would appreciate if someone could point out what is
> the real issue.
>
> Thanks...
> Rahul
>
> ps -aef output::
>
>  rgulati    2984    3980 con  15:04:43
> /usr/bin/ipc-daemon2
>   SYSTEM    2088       1   ?  17:31:08
> /usr/bin/cygrunsrv
>   SYSTEM    2796    2088   ?  17:31:08
> /usr/sbin/cygserver
>  rgulati    3852    1432 con  17:59:05 /usr/bin/ps
>
>
> Here is a snippet of my code:
>
> int main{)
> {
>    int     i;
>    for (i=0; i<SHM_TAB_SZ; i++) {
>       shm_tab[i].free=1;
>    }
>    shm_id = shmget(LOADGEN_SHM_KEY, SHM_TAB_SZ*sizeof(SHM_DATA),
>                    0777|IPC_CREAT);
>    if (shm_id <0) {
>       if (debug) printf("\nLGEN:shmget failed...\n");
>          perror("LGEN:shmget:");
>    }
> }

Not nearly enough information, the problem reporting guidelines at
<http://cygwin.com/problems.html> were not followed (e.g., no attached
cygcheck output), and your code snippet isn't self-contained, doesn't
compile (even discounting Yahoo's line wrapping -- next time, please
attach the code), and doesn't reproduce the bug.  In the absense of the
facts, I can only offer a WAG: does $CYGWIN contain "server" when you run
your program?
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_	    pechtcha AT cs DOT nyu DOT edu | igor AT watson DOT ibm DOT com
ZZZzz /,`.-'`'    -.  ;-;;,_		Igor Peshansky, Ph.D. (name changed!)
     |,4-  ) )-,_. ,\ (  `'-'		old name: Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"Las! je suis sot... -Mais non, tu ne l'es pas, puisque tu t'en rends compte."
"But no -- you are no fool; you call yourself a fool, there's proof enough in
that!" -- Rostand, "Cyrano de Bergerac"

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