[pcca-tests.git] / mqueue.h / t_mq_timedreceive_timeout.c

/*
 * Copyright (c) 2009, Stathis Kamperis
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#define _XOPEN_SOURCE 600

#include <assert.h>
#include <errno.h>
#include <mqueue.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <sys/time.h>

#define MQNAME	"/t_asdssds"

int main(void)
{
	/*
	 * Create an empty message queue for mq_timedreceive() to block on it
	 * and time out.
	 */
	mqd_t md;

	md = mq_open(MQNAME, O_CREAT | O_EXCL | O_RDONLY, 0700, NULL);
	assert(md != (mqd_t)-1);

	/* Timeout in 3 seconds, if the queue doesn't fill in (it won't). */
	struct timespec now, timeout;

	assert(clock_gettime(CLOCK_REALTIME, &now) == 0);
	timeout.tv_sec  = now.tv_sec + 3;
	timeout.tv_nsec = now.tv_nsec;

	/*
	 * Since we don't trust mq_timedreceive(), we are going to manually measure
	 * the time ellapsed until the function call times out.
	 */
	struct timeval tv1, tv2;

	assert(gettimeofday(&tv1, NULL) == 0);

	/* This should timeout in ~3 seconds. */
	char buf[8192];		/* Implementation defined */

	assert(mq_timedreceive(md, buf, sizeof(buf), /* priority */ NULL,
		&timeout) == -1 && errno == ETIMEDOUT);

	/* Mark the end. */
	assert(gettimeofday(&tv2, NULL) == 0);

	/* Make sure the time ellapsed is roughly 3sec. */
	long int msec;

	msec = (tv2.tv_sec - tv1.tv_sec) * 1000 +
	       (tv2.tv_usec - tv1.tv_usec) / 1000;
	assert(msec >= 2900 && msec <= 3100);

	/* Cleanup. */
	assert(mq_close(md) != -1);
	assert(mq_unlink(MQNAME) != -1);

	printf("passed\n");

	return (EXIT_SUCCESS);
}
Commit	Line	Data
b7c677f7	1	/*
	2	* Copyright (c) 2009, Stathis Kamperis
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	*
	14	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	15	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	16	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	17	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	18	* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	19	* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
	20	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	21	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	22	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	23	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	24	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	25	* SUCH DAMAGE.
	26	*/
	27
	28	#define _XOPEN_SOURCE 600
	29
	30	#include <assert.h>
	31	#include <errno.h>
	32	#include <mqueue.h>
	33	#include <stdio.h>
	34	#include <stdlib.h>
	35	#include <time.h>
	36	#include <sys/time.h>
	37
	38	#define MQNAME "/t_asdssds"
	39
	40	int main(void)
	41	{
	42	/*
	43	* Create an empty message queue for mq_timedreceive() to block on it
	44	* and time out.
	45	*/
	46	mqd_t md;
	47
	48	md = mq_open(MQNAME, O_CREAT \| O_EXCL \| O_RDONLY, 0700, NULL);
	49	assert(md != (mqd_t)-1);
	50
	51	/* Timeout in 3 seconds, if the queue doesn't fill in (it won't). */
	52	struct timespec now, timeout;
	53
	54	assert(clock_gettime(CLOCK_REALTIME, &now) == 0);
	55	timeout.tv_sec = now.tv_sec + 3;
	56	timeout.tv_nsec = now.tv_nsec;
	57
	58	/*
	59	* Since we don't trust mq_timedreceive(), we are going to manually measure
	60	* the time ellapsed until the function call times out.
	61	*/
	62	struct timeval tv1, tv2;
	63
	64	assert(gettimeofday(&tv1, NULL) == 0);
65
66	/* This should timeout in ~3 seconds. */
67	char buf[8192]; /* Implementation defined */
68
69	assert(mq_timedreceive(md, buf, sizeof(buf), /* priority */ NULL,
70	&timeout) == -1 && errno == ETIMEDOUT);
71
72	/* Mark the end. */
73	assert(gettimeofday(&tv2, NULL) == 0);
74
75	/* Make sure the time ellapsed is roughly 3sec. */
76	long int msec;
77
78	msec = (tv2.tv_sec - tv1.tv_sec) * 1000 +
79	(tv2.tv_usec - tv1.tv_usec) / 1000;
80	assert(msec >= 2900 && msec <= 3100);
81
82	/* Cleanup. */
83	assert(mq_close(md) != -1);
84	assert(mq_unlink(MQNAME) != -1);
85
86	printf("passed\n");
87
88	return (EXIT_SUCCESS);
89	}