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t_join.c revision 1.1 
      1 /* $NetBSD: t_join.c,v 1.1 2010/07/28 21:29:15 jruoho Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2010 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jukka Ruohonen.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 #include <sys/cdefs.h>
     32 __RCSID("$NetBSD: t_join.c,v 1.1 2010/07/28 21:29:15 jruoho Exp $");
     33 
     34 #include <errno.h>
     35 #include <pthread.h>
     36 
     37 #include <atf-c.h>
     38 
     39 #include "h_common.h"
     40 
     41 static bool error;
     42 
     43 static void *threadfunc1(void *);
     44 static void *threadfunc2(void *);
     45 
     46 ATF_TC(pthread_join);
     47 ATF_TC_HEAD(pthread_join, tc)
     48 {
     49 
     50 	atf_tc_set_md_var(tc, "descr",
     51 	    "Checks basic error conditions in pthread_join(3)");
     52 }
     53 
     54 ATF_TC_BODY(pthread_join, tc)
     55 {
     56 	pthread_t thread;
     57 
     58 	PTHREAD_REQUIRE(pthread_create(&thread, NULL, threadfunc1, NULL));
     59 	PTHREAD_REQUIRE(pthread_join(thread, NULL));
     60 }
     61 
     62 static void *
     63 threadfunc1(void *arg)
     64 {
     65 	pthread_t thread[25];
     66 	pthread_t caller;
     67 	void *val = NULL;
     68 	size_t i;
     69 	int rv;
     70 
     71 	caller = pthread_self();
     72 
     73 	/*
     74 	 * The behavior is undefined, but should error
     75 	 * out, if we try to join the calling thread.
     76 	 */
     77 	rv = pthread_join(caller, NULL);
     78 
     79 	/*
     80 	 * The specification recommends EDEADLK.
     81 	 */
     82 	ATF_REQUIRE(rv != 0);
     83 	ATF_REQUIRE_EQ(rv, EDEADLK);
     84 
     85 	for (i = 0; i < __arraycount(thread); i++) {
     86 
     87 		error = true;
     88 
     89 		rv = pthread_create(&thread[i], NULL, threadfunc2, (void *)i);
     90 
     91 		ATF_REQUIRE_EQ(rv, 0);
     92 
     93 		/*
     94 		 * Try to join an invalid thread.
     95 		 */
     96 		rv = pthread_join(thread[i + 1], NULL);
     97 
     98 		ATF_REQUIRE_EQ(rv, ESRCH);
     99 
    100 		/*
    101 		 * Check join and exit condition.
    102 		 */
    103 		PTHREAD_REQUIRE(pthread_join(thread[i], &val));
    104 
    105 		ATF_REQUIRE_EQ(error, false);
    106 
    107 		ATF_REQUIRE(val != NULL);
    108 		ATF_REQUIRE(val == (void *)(i + 1));
    109 
    110 		/*
    111 		 * Once the thread has returned, ESRCH should
    112 		 * again follow if we try to join it again.
    113 		 */
    114 		rv = pthread_join(thread[i], NULL);
    115 
    116 		ATF_REQUIRE_EQ(rv, ESRCH);
    117 
    118 		/*
    119 		 * Try to detach the exited thread.
    120 		 */
    121 		rv = pthread_detach(thread[i]);
    122 
    123 		ATF_REQUIRE(rv != 0);
    124 	}
    125 
    126 	pthread_exit(NULL);
    127 
    128 	return NULL;
    129 }
    130 
    131 static void *
    132 threadfunc2(void *arg)
    133 {
    134 	static int i = 0;
    135 	int j;
    136 
    137 	j = (int)arg;
    138 
    139 	if (i++ == j)
    140 		error = false;
    141 
    142 	pthread_exit((void *)i);
    143 
    144 	return NULL;
    145 }
    146 
    147 ATF_TP_ADD_TCS(tp)
    148 {
    149 
    150 	ATF_TP_ADD_TC(tp, pthread_join);
    151 
    152 	return atf_no_error();
    153 }
    154