Message-ID: <441633FA.6010007@cygwin.com>
Date: Mon, 13 Mar 2006 22:09:46 -0500
From: "Larry Hall (Cygwin)" <reply-to-list-only-lh AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
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To: cygwin AT cygwin DOT com
Subject: Re: 1.5.19-4 Problem with compiled source
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Rich Mayo wrote:
>  I am attempting to compile and run a very simple shared memory server 
> and client.  Although my source compiles with no problem, when I attempt 
> to execute, the following is my only output:
> 
> Bad system call
> 
> I have conducted some experiments and the problem occurs with the very 
> first line in my code.  The following is the server code up to line that 
> causes the error:
> 
> /* shm_server.c:  Server program to demonstrate shared memory. */
> 
> #include "shm_server.h"
> 
> int main(void)
> {
>    char *      shm      = NULL;     // Shared Memory Pointer
>    char *      s        = NULL;     // Dynamic Pointer
> 
>    key_t       key      = 5678;     // shared memory segment name is '5678'
>    char        c;                   // Temporary char
>    int         shmid;               // Shared Memory Segment ID
> 
>    /* Create the segment. */
>    if ((shmid = shmget (key, SHMSZ, IPC_CREAT | 0666)) < 0)
>    {
>        fprintf (stderr, "shmget failed\n");
>        exit (1);
>    }
> 
> ...
> 
> There appears to be something wrong with "shmget".  Any suggestions??
> 
> 


Absolutely!  Check out the section in the User's Guide regarding
cygserver <http://cygwin.com/cygwin-ug-net/using-cygserver.html>.


-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
838 Washington Street                   (508) 893-9889 - FAX
Holliston, MA 01746

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