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// Copyright 2003 John Kasunich
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include <stdio.h>
#include <signal.h> /* signal(), SIGINT */
#include <unistd.h> /* sleep() */
#include "rtapi.h" /* user-level API to RT Linux */
#include "common.h" /* shmem structure */
static int module;
static int key = SHMEM_KEY;
static int shmem_id;
static SHMEM_STRUCT *shmem_struct;
static int done = 0;
static void quit(int sig)
{
done = 1;
}
int main()
{
int retval;
module = rtapi_init("SHMEM_USR");
if (module < 1) {
rtapi_print_msg(RTAPI_MSG_ERR,
"shmemusr main: rtapi_init returned %d\n", module);
return -1;
}
/* allocate the shared memory structure */
shmem_id = rtapi_shmem_new(key, module, sizeof(SHMEM_STRUCT));
if (shmem_id < 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"shmemusr main: rtapi_shmem_new returned %d\n", shmem_id);
rtapi_exit(module);
return -1;
}
retval = rtapi_shmem_getptr(shmem_id, (void **) &shmem_struct);
if (retval < 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"shmemusr main: rtapi_shmem_getptr returned %d\n", retval);
rtapi_exit(module);
return -1;
}
signal(SIGINT, quit);
while (!done) {
rtapi_print("%lu\n", shmem_struct->heartbeat);
sleep(1);
}
retval = rtapi_shmem_delete(shmem_id, module);
if (retval < 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"shmemusr main: rtapi_free_shmem returned %d\n", retval);
rtapi_exit(module);
return -1;
}
return rtapi_exit(module);
}
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