/* RT user.

        Copyright (c) 2002 Roger Larsson <roger.larsson_AT_norran.net>

    This program is free software; you can redistribute it and/or
    modify it under the terms of version 2 of the GNU General Public
    License as published by the Free Software Foundation.

    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., 675 Mass Ave, Cambridge, MA 02139, USA.

    Thanks to autor of KSysGuard Chris Schlaeger for borrowed code...
*/

#include <sys/types.h>
#include <sched.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>

struct request
{
	pid_t pid;
	char _filler[32];
};


int main(int argc, char *argv[])
{
	struct request request;
	FILE *reqf;


	reqf = fopen("/var/named/rt-request", "w");
	if (reqf == NULL) {
	    perror("fopen");
	    return errno;
	}

	printf("policy %d\n", sched_getscheduler(0));


	request.pid = getpid();
	fwrite(&request, 32, 1, reqf);
	fclose(reqf); // important!

	printf("policy %d\n", sched_getscheduler(0));
	while (sched_getscheduler(0) == 0) {
		putchar('.');
		sleep(1);
	}

	printf("\npolicy %d\n", sched_getscheduler(0));

	// well behaved
	sleep(5);

	while (sched_getscheduler(0) != 0) {
		// someone did listen to my request...
		// assume monitor is running
	}

	return 0;
}