2-2.c

最新rtlinux内核源码

/*   
 * Copyright (c) 2002, Intel Corporation. All rights reserved.
 * Created by:  julie.n.fleischer REMOVE-THIS AT intel DOT com
 * This file is licensed under the GPL license.  For the full content
 * of this license, see the COPYING file at the top level of this 
 * source tree.
 *
 * Test that timer_gettime() sets itimerspec.it_value = 0 if 
 * the timer was previously disarmed because it had just expired with
 * no repeating interval.
 *
 * For this test, signal SIGCONT will be used so that the test will
 * not abort.  Clock CLOCK_REALTIME will be used.
 */

#include <time.h>
#include <signal.h>
#include "compat.h"
#include "posixtest.h"

#define TIMERSEC 1
#define SLEEPDELTA 1

timer_t tid;
pthread_t th;

void *th_code(void *arg)
{
	struct itimerspec itsset, itsget;

	itsset.it_interval.tv_sec = 0; 
	itsset.it_interval.tv_nsec = 0;
	itsset.it_value.tv_sec = TIMERSEC;
	itsset.it_value.tv_nsec = 0;

	/*
	 * set up timer that will expire
	 */
	if (timer_settime(tid, 0, &itsset, NULL) != 0) {
		perror("timer_settime() did not return success\n");
		return PTS_UNRESOLVED;
	}

	/*
	 * let timer expire (just call sleep())
	 */
	sleep(TIMERSEC+SLEEPDELTA);

	if (timer_gettime(tid, &itsget) != 0) {
		perror("timer_gettime() did not return success\n");
		return PTS_UNRESOLVED;
	}


	if ( (0 == itsget.it_value.tv_sec) &&
		(0 == itsget.it_value.tv_nsec) ) {
		printf("Test PASSED\n");
		return PTS_PASS;
	} else {
		printf("Test FAILED:  tv_sec %d tv_nsec %d\n",
				(int) itsget.it_value.tv_sec,
				(int) itsget.it_value.tv_nsec);
		return PTS_FAIL;
	}

	printf("This code should not be executed\n");
	return PTS_UNRESOLVED;
}



int init_module(void)
{
  int err=0;
  struct sigevent ev;

  ev.sigev_notify = SIGEV_SIGNAL;
  ev.sigev_signo = SIGCONT;

  if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
    perror("timer_create() did not return success\n");
    return PTS_UNRESOLVED;
  }

  err=pthread_create(&th,NULL,th_code,0);
  return err;

}

void cleanup_module(void){
  timer_delete(tid);
  pthread_delete_np(th);
}