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t_condwait.c revision 1.7 
      1 /* $NetBSD: t_condwait.c,v 1.7 2019/08/10 07:36:15 martin 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 1.7 2019/08/10 07:36:15 martin Exp $");
     30 
     31 #include <sys/time.h>
     32 #include <errno.h>
     33 #include <pthread.h>
     34 #include <stdio.h>
     35 #include <stdlib.h>
     36 #include <string.h>
     37 #include <time.h>
     38 #include <unistd.h>
     39 
     40 #include <atf-c.h>
     41 
     42 #include "isqemu.h"
     43 
     44 #include "h_common.h"
     45 
     46 #define WAITTIME 2	/* Timeout wait secound */
     47 
     48 static const int debug = 1;
     49 
     50 static void *
     51 run(void *param)
     52 {
     53 	struct timespec ts, to, te, twmin, twmax;
     54 	clockid_t clck;
     55 	pthread_condattr_t attr;
     56 	pthread_cond_t cond;
     57 	pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
     58 	int ret = 0;
     59 
     60 
     61 	clck = *(clockid_t *)param;
     62 	PTHREAD_REQUIRE(pthread_condattr_init(&attr));
     63 	PTHREAD_REQUIRE(pthread_condattr_setclock(&attr, clck));
     64 	pthread_cond_init(&cond, &attr);
     65 
     66 	ATF_REQUIRE_EQ((ret = pthread_mutex_lock(&m)), 0);
     67 
     68 	ATF_REQUIRE_EQ(clock_gettime(clck, &ts), 0);
     69 	to = ts;
     70 
     71 	if (debug)
     72 		printf("started: %lld.%09ld sec\n", (long long)to.tv_sec,
     73 		    to.tv_nsec);
     74 
     75 	ts.tv_sec += WAITTIME;	/* Timeout wait */
     76 
     77 	switch (ret = pthread_cond_timedwait(&cond, &m, &ts)) {
     78 	case ETIMEDOUT:
     79 		/* Timeout */
     80 		ATF_REQUIRE_EQ(clock_gettime(clck, &te), 0);
     81 		timespecsub(&te, &to, &to);
     82 		if (debug) {
     83 			printf("timeout: %lld.%09ld sec\n",
     84 			    (long long)te.tv_sec, te.tv_nsec);
     85 			printf("elapsed: %lld.%09ld sec\n",
     86 			    (long long)to.tv_sec, to.tv_nsec);
     87 		}
     88 		twmin.tv_sec = WAITTIME;
     89 		twmin.tv_nsec = 0;
     90 		if (0 /* XXX */ && isQEMU()) {
     91 			struct timespec td, t;
     92 			td.tv_sec = 0;
     93 			td.tv_nsec = 900000000;
     94 			t = twmin;
     95 			timespecsub(&t, &td, &twmin);
     96 			td.tv_sec = 2;
     97 			td.tv_nsec = 500000000;
     98 			timespecadd(&t, &td, &twmax);
     99 		} else {
    100 			twmax = twmin;
    101 			twmax.tv_sec++;
    102 		}
    103 		ATF_REQUIRE(timespeccmp(&to, &twmin, >=));
    104 		ATF_REQUIRE(timespeccmp(&to, &twmax, <=));
    105 		break;
    106 	default:
    107 		ATF_REQUIRE_MSG(0, "pthread_cond_timedwait: %s", strerror(ret));
    108 	}
    109 
    110 	ATF_REQUIRE_MSG(!(ret = pthread_mutex_unlock(&m)),
    111 	    "pthread_mutex_unlock: %s", strerror(ret));
    112 	pthread_exit(&ret);
    113 }
    114 
    115 static void
    116 cond_wait(clockid_t clck, const char *msg) {
    117 	pthread_t child;
    118 
    119 	if (debug)
    120 		printf( "**** %s clock wait starting\n", msg);
    121 	ATF_REQUIRE_EQ(pthread_create(&child, NULL, run, &clck), 0);
    122 	ATF_REQUIRE_EQ(pthread_join(child, NULL), 0); /* wait for terminate */
    123 	if (debug)
    124 		printf( "**** %s clock wait ended\n", msg);
    125 }
    126 
    127 ATF_TC(cond_wait_real);
    128 ATF_TC_HEAD(cond_wait_real, tc)
    129 {
    130 	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
    131 	    "with CLOCK_REALTIME");
    132 }
    133 
    134 ATF_TC_BODY(cond_wait_real, tc) {
    135 	cond_wait(CLOCK_REALTIME, "CLOCK_REALTIME");
    136 }
    137 
    138 ATF_TC(cond_wait_mono);
    139 ATF_TC_HEAD(cond_wait_mono, tc)
    140 {
    141 	atf_tc_set_md_var(tc, "descr", "Checks pthread_cond_timedwait "
    142 	    "with CLOCK_MONOTONIC");
    143 }
    144 
    145 ATF_TC_BODY(cond_wait_mono, tc) {
    146 	cond_wait(CLOCK_MONOTONIC, "CLOCK_MONOTONIC");
    147 }
    148 
    149 ATF_TP_ADD_TCS(tp)
    150 {
    151 	ATF_TP_ADD_TC(tp, cond_wait_real);
    152 	ATF_TP_ADD_TC(tp, cond_wait_mono);
    153 	return atf_no_error();
    154 }
    155