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t_join.c revision 1.5 
      1 /* $NetBSD: t_join.c,v 1.5 2010/11/30 18:38:54 joerg 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 1.5 2010/11/30 18:38:54 joerg Exp $");
     33 
     34 #include <errno.h>
     35 #include <pthread.h>
     36 
     37 #include <atf-c.h>
     38 
     39 #include "h_common.h"
     40 
     41 #ifdef CHECK_STACK_ALIGNMENT
     42 extern int check_stack_alignment(void);
     43 #endif
     44 
     45 static bool error;
     46 
     47 static void *threadfunc1(void *);
     48 static void *threadfunc2(void *);
     49 
     50 ATF_TC(pthread_join);
     51 ATF_TC_HEAD(pthread_join, tc)
     52 {
     53 
     54 	atf_tc_set_md_var(tc, "descr",
     55 	    "Checks basic error conditions in pthread_join(3)");
     56 }
     57 
     58 ATF_TC_BODY(pthread_join, tc)
     59 {
     60 	pthread_t thread;
     61 
     62 	PTHREAD_REQUIRE(pthread_create(&thread, NULL, threadfunc1, NULL));
     63 	PTHREAD_REQUIRE(pthread_join(thread, NULL));
     64 }
     65 
     66 static void *
     67 threadfunc1(void *arg)
     68 {
     69 	pthread_t thread[25];
     70 	pthread_t caller;
     71 	void *val = NULL;
     72 	uintptr_t i;
     73 	int rv;
     74 
     75 	caller = pthread_self();
     76 
     77 #ifdef CHECK_STACK_ALIGNMENT
     78 	/*
     79 	 * Check alignment of thread stack, if supported.
     80 	 */
     81 	ATF_REQUIRE(check_stack_alignment());
     82 #endif
     83 
     84 	/*
     85 	 * The behavior is undefined, but should error
     86 	 * out, if we try to join the calling thread.
     87 	 */
     88 	rv = pthread_join(caller, NULL);
     89 
     90 	/*
     91 	 * The specification recommends EDEADLK.
     92 	 */
     93 	ATF_REQUIRE(rv != 0);
     94 	ATF_REQUIRE_EQ(rv, EDEADLK);
     95 
     96 	for (i = 0; i < __arraycount(thread); i++) {
     97 
     98 		error = true;
     99 
    100 		rv = pthread_create(&thread[i], NULL, threadfunc2, (void *)i);
    101 
    102 		ATF_REQUIRE_EQ(rv, 0);
    103 
    104 		/*
    105 		 * Try to join an invalid thread.
    106 		 */
    107 		rv = pthread_join(thread[i + 1], NULL);
    108 
    109 		ATF_REQUIRE_EQ(rv, ESRCH);
    110 
    111 		/*
    112 		 * Check join and exit condition.
    113 		 */
    114 		PTHREAD_REQUIRE(pthread_join(thread[i], &val));
    115 
    116 		ATF_REQUIRE_EQ(error, false);
    117 
    118 		ATF_REQUIRE(val != NULL);
    119 		ATF_REQUIRE(val == (void *)(i + 1));
    120 
    121 		/*
    122 		 * Once the thread has returned, ESRCH should
    123 		 * again follow if we try to join it again.
    124 		 */
    125 		rv = pthread_join(thread[i], NULL);
    126 
    127 		ATF_REQUIRE_EQ(rv, ESRCH);
    128 
    129 		/*
    130 		 * Try to detach the exited thread.
    131 		 */
    132 		rv = pthread_detach(thread[i]);
    133 
    134 		ATF_REQUIRE(rv != 0);
    135 	}
    136 
    137 	pthread_exit(NULL);
    138 
    139 	return NULL;
    140 }
    141 
    142 static void *
    143 threadfunc2(void *arg)
    144 {
    145 	static uintptr_t i = 0;
    146 	uintptr_t j;
    147 
    148 	j = (uintptr_t)arg;
    149 
    150 	if (i++ == j)
    151 		error = false;
    152 
    153 	pthread_exit((void *)i);
    154 
    155 	return NULL;
    156 }
    157 
    158 ATF_TP_ADD_TCS(tp)
    159 {
    160 
    161 	ATF_TP_ADD_TC(tp, pthread_join);
    162 
    163 	return atf_no_error();
    164 }
    165