t_mutex.c revision 1.3
1 /* $NetBSD: t_mutex.c,v 1.3 2011/02/20 14:37:44 jmmv Exp $ */ 2 3 /* 4 * Copyright (c) 2008 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 29 #include <sys/cdefs.h> 30 __COPYRIGHT("@(#) Copyright (c) 2008\ 31 The NetBSD Foundation, inc. All rights reserved."); 32 __RCSID("$NetBSD: t_mutex.c,v 1.3 2011/02/20 14:37:44 jmmv Exp $"); 33 34 #include <pthread.h> 35 #include <stdio.h> 36 #include <unistd.h> 37 38 #include <atf-c.h> 39 40 #include "h_common.h" 41 42 static pthread_mutex_t mutex; 43 static pthread_mutex_t static_mutex = PTHREAD_MUTEX_INITIALIZER; 44 static int global_x; 45 46 static void * 47 mutex1_threadfunc(void *arg) 48 { 49 int *param; 50 51 printf("2: Second thread.\n"); 52 53 param = arg; 54 printf("2: Locking mutex\n"); 55 pthread_mutex_lock(&mutex); 56 printf("2: Got mutex. *param = %d\n", *param); 57 ATF_REQUIRE_EQ(*param, 20); 58 (*param)++; 59 60 pthread_mutex_unlock(&mutex); 61 62 return param; 63 } 64 65 ATF_TC(mutex1); 66 ATF_TC_HEAD(mutex1, tc) 67 { 68 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 69 } 70 ATF_TC_BODY(mutex1, tc) 71 { 72 int x; 73 pthread_t new; 74 void *joinval; 75 76 printf("1: Mutex-test 1\n"); 77 78 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 79 x = 1; 80 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 81 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex1_threadfunc, &x)); 82 printf("1: Before changing the value.\n"); 83 sleep(2); 84 x = 20; 85 printf("1: Before releasing the mutex.\n"); 86 sleep(2); 87 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 88 printf("1: After releasing the mutex.\n"); 89 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 90 91 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 92 printf("1: Thread joined. X was %d. Return value (int) was %d\n", 93 x, *(int *)joinval); 94 ATF_REQUIRE_EQ(x, 21); 95 ATF_REQUIRE_EQ(*(int *)joinval, 21); 96 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 97 } 98 99 static void * 100 mutex2_threadfunc(void *arg) 101 { 102 long count = *(int *)arg; 103 104 printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count); 105 106 while (count--) { 107 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 108 global_x++; 109 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 110 } 111 112 return (void *)count; 113 } 114 115 ATF_TC(mutex2); 116 ATF_TC_HEAD(mutex2, tc) 117 { 118 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 119 } 120 ATF_TC_BODY(mutex2, tc) 121 { 122 int count, count2; 123 pthread_t new; 124 void *joinval; 125 126 printf("1: Mutex-test 2\n"); 127 128 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 129 130 global_x = 0; 131 count = count2 = 10000000; 132 133 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 134 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex2_threadfunc, &count2)); 135 136 printf("1: Thread %p\n", pthread_self()); 137 138 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 139 140 while (count--) { 141 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 142 global_x++; 143 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 144 } 145 146 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 147 148 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 149 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 150 global_x, (long)joinval); 151 ATF_REQUIRE_EQ(global_x, 20000000); 152 } 153 154 static void * 155 mutex3_threadfunc(void *arg) 156 { 157 long count = *(int *)arg; 158 159 printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count); 160 161 while (count--) { 162 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 163 global_x++; 164 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 165 } 166 167 return (void *)count; 168 } 169 170 ATF_TC(mutex3); 171 ATF_TC_HEAD(mutex3, tc) 172 { 173 atf_tc_set_md_var(tc, "descr", "Checks mutexes using a static " 174 "initializer"); 175 } 176 ATF_TC_BODY(mutex3, tc) 177 { 178 int count, count2; 179 pthread_t new; 180 void *joinval; 181 182 printf("1: Mutex-test 3\n"); 183 184 global_x = 0; 185 count = count2 = 10000000; 186 187 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 188 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex3_threadfunc, &count2)); 189 190 printf("1: Thread %p\n", pthread_self()); 191 192 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 193 194 while (count--) { 195 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 196 global_x++; 197 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 198 } 199 200 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 201 202 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 203 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 204 global_x, (long)joinval); 205 ATF_REQUIRE_EQ(global_x, 20000000); 206 } 207 208 static void * 209 mutex4_threadfunc(void *arg) 210 { 211 int *param; 212 213 printf("2: Second thread.\n"); 214 215 param = arg; 216 printf("2: Locking mutex\n"); 217 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 218 printf("2: Got mutex. *param = %d\n", *param); 219 (*param)++; 220 221 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 222 223 return param; 224 } 225 226 ATF_TC(mutex4); 227 ATF_TC_HEAD(mutex4, tc) 228 { 229 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 230 } 231 ATF_TC_BODY(mutex4, tc) 232 { 233 int x; 234 pthread_t new; 235 pthread_mutexattr_t mattr; 236 void *joinval; 237 238 printf("1: Mutex-test 4\n"); 239 240 PTHREAD_REQUIRE(pthread_mutexattr_init(&mattr)); 241 PTHREAD_REQUIRE(pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE)); 242 243 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, &mattr)); 244 245 PTHREAD_REQUIRE(pthread_mutexattr_destroy(&mattr)); 246 247 x = 1; 248 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 249 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex4_threadfunc, &x)); 250 251 printf("1: Before recursively acquiring the mutex.\n"); 252 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 253 254 printf("1: Before releasing the mutex once.\n"); 255 sleep(2); 256 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 257 printf("1: After releasing the mutex once.\n"); 258 259 x = 20; 260 261 printf("1: Before releasing the mutex twice.\n"); 262 sleep(2); 263 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 264 printf("1: After releasing the mutex twice.\n"); 265 266 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 267 268 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 269 printf("1: Thread joined. X was %d. Return value (int) was %d\n", 270 x, *(int *)joinval); 271 ATF_REQUIRE_EQ(x, 21); 272 ATF_REQUIRE_EQ(*(int *)joinval, 21); 273 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 274 } 275 276 ATF_TP_ADD_TCS(tp) 277 { 278 ATF_TP_ADD_TC(tp, mutex1); 279 ATF_TP_ADD_TC(tp, mutex2); 280 ATF_TP_ADD_TC(tp, mutex3); 281 ATF_TP_ADD_TC(tp, mutex4); 282 283 return atf_no_error(); 284 } 285
Indexes created Tue Sep 23 01:09:51 GMT 2025