Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Message-ID:	<421F8133.1040301@lindaspaces.com>
Date:	Fri, 25 Feb 2005 14:49:07 -0500
From:	Jennifer Lai <lai AT lindaspaces DOT com>
User-Agent:	Mozilla Thunderbird 0.7 (Windows/20040616)
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	RE: shmget failed
X-IsSubscribed:	yes

I have handled error in my code,
if (shmid==-1) {
   fprintf(stderr, "cannot create shared region.\n");
   exit(1);
}
But this code is not executed unless I comment out
shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0600);

I read somewhere that ipc-daemon2 should be up and running. So, I checked it,

% cygrunsrv -Q ipc-daemon2
cygrunsrv: Error querying a service: OpenService: Win32 error 1060:
The specified service does not exist as an installed service. 

% ipc-daemon2
(ipc-daemon2) IPC-daemon is already started!!
(ipc-daemon2) Unable to start IPC-daemon!

%ipcs -m
Bad system call

Does these errors have to do with why shmget failed?
and, how would I be able to fix them?


Thanks,
Jennifer



----Original Message----
>From: cygwin-owner On Behalf Of Jennifer Lai 
>Sent: 25 February 2005 19:25

> Hi,
>    I got bad system call error when I tried to compile a program that
> contains the following code,
> 
> shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0600);
> where, size = 661552
> 
> At first I thought it has to do with the size, but reducing the size to
> 128 still cause bad system call error.
> Does anyone know what caused shmget to fail?


  Yes, *you* do.  Check errno.


    cheers,
      DaveK



--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -