tests/lib/libpthread/t_condwait.c

   1 /* $NetBSD: t_condwait.c,v 1.4 2013/04/12 17:18:11 christos Exp $ */
   2
   3 /*
   4  * Copyright (c) 2013 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 #include <sys/cdefs.h>
  29 __RCSID("$NetBSD: t_condwait.c,v 1.4 2013/04/12 17:18:11 christos Exp $");
  30
  31 #include <errno.h>
  32 #include <pthread.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36 #include <time.h>
  37 #include <unistd.h>
  38
  39 #include <atf-c.h>
  40
  41 #include "isqemu.h"
  42
  43 #define WAITTIME 2      /* Timeout wait secound */
  44
  45 static const int debug = 1;
  46
  47 static void *
  48 run(void *param)
  49 {
  50         struct timespec ts, to, te;
  51         clockid_t clck;
  52         pthread_condattr_t attr;
  53         pthread_cond_t cond;
  54         pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
  55         int ret = 0;
  56
  57
  58         clck = *(clockid_t *)param;
  59         pthread_condattr_init(&attr);
  60         pthread_condattr_setclock(&attr, clck); /* MONOTONIC or MONOTONIC */
  61         pthread_cond_init(&cond, &attr);
  62
  63         ATF_REQUIRE_EQ((ret = pthread_mutex_lock(&m)), 0);
  64
  65         ATF_REQUIRE_EQ(clock_gettime(clck, &ts), 0);
  66         to = ts;
  67
  68         if (debug)
  69                 printf("started: %lld.%09ld sec\n", (long long)to.tv_sec,
  70                     to.tv_nsec);
  71
  72         ts.tv_sec += WAITTIME;  /* Timeout wait */
  73
  74         switch (ret = pthread_cond_timedwait(&cond, &m, &ts)) {
  75         case ETIMEDOUT:
  76                 /* Timeout */
  77                 ATF_REQUIRE_EQ(clock_gettime(clck, &te), 0);
  78                 timespecsub(&te, &to, &to);
  79                 if (debug) {
  80                         printf("timeout: %lld.%09ld sec\n",
  81                             (long long)te.tv_sec, te.tv_nsec);
  82                         printf("elapsed: %lld.%09ld sec\n",
  83                             (long long)to.tv_sec, to.tv_nsec);
  84                 }
  85                 if (isQEMU()) {
  86                         double to_seconds = to.tv_sec + 1e-9 * to.tv_nsec;
  87                         ATF_REQUIRE(to_seconds >= WAITTIME * 0.9);
  88                         /* Loose upper limit because of qemu timing bugs */
  89                         ATF_REQUIRE(to_seconds < WAITTIME * 2.5);
  90                 } else {
  91                         ATF_REQUIRE_EQ(to.tv_sec, WAITTIME);
  92                 }
  93                 break;
  94         default:
  95                 ATF_REQUIRE_MSG(0, "pthread_cond_timedwait: %s", strerror(ret));
  96         }
  97
  98         ATF_REQUIRE_MSG(!(ret = pthread_mutex_unlock(&m)),
  99             "pthread_mutex_unlock: %s", strerror(ret));
 100         pthread_exit(&ret);
 101 }
 102
 103 static void
 104 cond_wait(clockid_t clck, const char *msg) {
 105         pthread_t child;
 106
 107         if (debug)
 108                 printf( "**** %s clock wait starting\n", msg);
 109         ATF_REQUIRE_EQ(pthread_create(&child, NULL, run, &clck), 0);
 110         ATF_REQUIRE_EQ(pthread_join(child, NULL), 0); /* wait for terminate */
 111         if (debug)
 112                 printf( "**** %s clock wait ended\n", msg);
 113 }
 114
 115 ATF_TC(cond_wait_real);
 116 ATF_TC_HEAD(cond_wait_real, tc)
 117 {
 118         atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
 119             "with CLOCK_REALTIME");
 120 }
 121
 122 ATF_TC_BODY(cond_wait_real, tc) {
 123         cond_wait(CLOCK_REALTIME, "CLOCK_REALTIME");
 124 }
 125
 126 ATF_TC(cond_wait_mono);
 127 ATF_TC_HEAD(cond_wait_mono, tc)
 128 {
 129         atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
 130             "with CLOCK_MONOTONIC");
 131 }
 132
 133 ATF_TC_BODY(cond_wait_mono, tc) {
 134         cond_wait(CLOCK_MONOTONIC, "CLOCK_MONOTONIC");
 135 }
 136
 137 ATF_TP_ADD_TCS(tp)
 138 {
 139         ATF_TP_ADD_TC(tp, cond_wait_real);
 140         ATF_TP_ADD_TC(tp, cond_wait_mono);
 141         return 0;
 142 }