1 /* $NetBSD: t_join.c,v 1.7 2011/12/12 23:54:18 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 1.7 2011/12/12 23:54:18 joerg Exp $"); 33 34 #include <errno.h> 35 #include <pthread.h> 36 #include <stdint.h> 37 38 #include <atf-c.h> 39 40 #include "h_common.h" 41 42 #ifdef CHECK_STACK_ALIGNMENT 43 extern int check_stack_alignment(void); 44 #endif 45 46 static bool error; 47 48 static void *threadfunc1(void *); 49 static void *threadfunc2(void *); 50 51 ATF_TC(pthread_join); 52 ATF_TC_HEAD(pthread_join, tc) 53 { 54 55 atf_tc_set_md_var(tc, "descr", 56 "Checks basic error conditions in pthread_join(3)"); 57 } 58 59 ATF_TC_BODY(pthread_join, tc) 60 { 61 pthread_t thread; 62 63 PTHREAD_REQUIRE(pthread_create(&thread, NULL, threadfunc1, NULL)); 64 PTHREAD_REQUIRE(pthread_join(thread, NULL)); 65 } 66 67 static void * 68 threadfunc1(void *arg) 69 { 70 pthread_t thread[25]; 71 pthread_t caller; 72 void *val = NULL; 73 uintptr_t i; 74 int rv; 75 76 caller = pthread_self(); 77 78 #ifdef CHECK_STACK_ALIGNMENT 79 /* 80 * Check alignment of thread stack, if supported. 81 */ 82 ATF_REQUIRE(check_stack_alignment()); 83 #endif 84 85 /* 86 * The behavior is undefined, but should error 87 * out, if we try to join the calling thread. 88 */ 89 rv = pthread_join(caller, NULL); 90 91 /* 92 * The specification recommends EDEADLK. 93 */ 94 ATF_REQUIRE(rv != 0); 95 ATF_REQUIRE_EQ(rv, EDEADLK); 96 97 for (i = 0; i < __arraycount(thread); i++) { 98 99 error = true; 100 101 rv = pthread_create(&thread[i], NULL, threadfunc2, (void *)i); 102 103 ATF_REQUIRE_EQ(rv, 0); 104 105 /* 106 * Check join and exit condition. 107 */ 108 PTHREAD_REQUIRE(pthread_join(thread[i], &val)); 109 110 ATF_REQUIRE_EQ(error, false); 111 112 ATF_REQUIRE(val != NULL); 113 ATF_REQUIRE(val == (void *)(i + 1)); 114 115 /* 116 * Once the thread has returned, ESRCH should 117 * again follow if we try to join it again. 118 */ 119 rv = pthread_join(thread[i], NULL); 120 121 ATF_REQUIRE_EQ(rv, ESRCH); 122 123 /* 124 * Try to detach the exited thread. 125 */ 126 rv = pthread_detach(thread[i]); 127 128 ATF_REQUIRE(rv != 0); 129 } 130 131 pthread_exit(NULL); 132 133 return NULL; 134 } 135 136 static void * 137 threadfunc2(void *arg) 138 { 139 static uintptr_t i = 0; 140 uintptr_t j; 141 142 j = (uintptr_t)arg; 143 144 if (i++ == j) 145 error = false; 146 147 pthread_exit((void *)i); 148 149 return NULL; 150 } 151 152 ATF_TP_ADD_TCS(tp) 153 { 154 155 ATF_TP_ADD_TC(tp, pthread_join); 156 157 return atf_no_error(); 158 } 159