Initial import of t_shmat.
[pcca-tests.git] / mqueue.h / t_mq_timedreceive_timeout.c
CommitLineData
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
40int 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}