1-2.c

来自「最新rtlinux内核源码」· C语言 代码 · 共 89 行

/*   
 * 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 after a timer is deleted by calling timer_delete(), it
 * cannot be armed by calling timer_settime().
 * Steps:
 * - Create a timer 
 * - Delete that timer
 * - Try to call timer_settime() on that timer and ensure it fails
 *   with errno==EINVAL.
 *
 * For this test, signal SIGTOTEST will be used, clock CLOCK_REALTIME
 * will be used.
 */

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

#define SIGTOTEST SIGALRM
#define TIMERSEC 3


timer_t tid;
struct itimerspec its;

#define perror printk
#define printf printk

int init_module(void)
{
  	struct sigevent ev;
	ev.sigev_notify = SIGEV_SIGNAL;
	ev.sigev_signo = SIGTOTEST;

	if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
		perror("timer_create() did not return success\n");
		return PTS_UNRESOLVED;
	}
	return 0;
}
void cleanup_module(void)
{
  its.it_interval.tv_sec = 0;
  its.it_interval.tv_nsec = 0;
  its.it_value.tv_sec = TIMERSEC;
  its.it_value.tv_nsec = 0;
  
  
  timer_settime(tid, 0, &its, NULL);
	
  if (timer_delete(tid) != 0) {
    perror("timer_delete() did not return success\n");
    return PTS_UNRESOLVED;
  }

	if (timer_settime(tid, 0, &its, NULL) == -1) {
		if (errno==EINVAL) {
			printf("Test PASSED\n");
			return PTS_PASS;
		} else {
			printf("errno!=EINVAL after a timer_delete()\n");
			return PTS_FAIL;
		}
	} else {
		printf("timer_settime() did not fail after timer_delete()\n");
		return PTS_FAIL;
	}

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