t_mutex.c revision 1.5
1 /* $NetBSD: t_mutex.c,v 1.5 2011/04/04 14:47:22 martin 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 1.5 2011/04/04 14:47:22 martin Exp $"); 33 34 #include <pthread.h> 35 #include <stdio.h> 36 #include <string.h> 37 #include <unistd.h> 38 39 #include <atf-c.h> 40 #include <atf-c/config.h> 41 42 #include "h_common.h" 43 44 static pthread_mutex_t mutex; 45 static pthread_mutex_t static_mutex = PTHREAD_MUTEX_INITIALIZER; 46 static int global_x; 47 48 static void * 49 mutex1_threadfunc(void *arg) 50 { 51 int *param; 52 53 printf("2: Second thread.\n"); 54 55 param = arg; 56 printf("2: Locking mutex\n"); 57 pthread_mutex_lock(&mutex); 58 printf("2: Got mutex. *param = %d\n", *param); 59 ATF_REQUIRE_EQ(*param, 20); 60 (*param)++; 61 62 pthread_mutex_unlock(&mutex); 63 64 return param; 65 } 66 67 ATF_TC(mutex1); 68 ATF_TC_HEAD(mutex1, tc) 69 { 70 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 71 } 72 ATF_TC_BODY(mutex1, tc) 73 { 74 int x; 75 pthread_t new; 76 void *joinval; 77 78 printf("1: Mutex-test 1\n"); 79 80 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 81 x = 1; 82 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 83 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex1_threadfunc, &x)); 84 printf("1: Before changing the value.\n"); 85 sleep(2); 86 x = 20; 87 printf("1: Before releasing the mutex.\n"); 88 sleep(2); 89 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 90 printf("1: After releasing the mutex.\n"); 91 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 92 93 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 94 printf("1: Thread joined. X was %d. Return value (int) was %d\n", 95 x, *(int *)joinval); 96 ATF_REQUIRE_EQ(x, 21); 97 ATF_REQUIRE_EQ(*(int *)joinval, 21); 98 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 99 } 100 101 static void * 102 mutex2_threadfunc(void *arg) 103 { 104 long count = *(int *)arg; 105 106 printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count); 107 108 while (count--) { 109 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 110 global_x++; 111 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 112 } 113 114 return (void *)count; 115 } 116 117 ATF_TC(mutex2); 118 ATF_TC_HEAD(mutex2, tc) 119 { 120 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 121 if (strcmp(atf_config_get("atf_arch"), "powerpc") == 0) 122 atf_tc_set_md_var(tc, "timeout", "40"); 123 } 124 ATF_TC_BODY(mutex2, tc) 125 { 126 const char *m_arch; 127 int count, count2; 128 pthread_t new; 129 void *joinval; 130 131 printf("1: Mutex-test 2\n"); 132 133 m_arch = atf_config_get("atf_arch"); 134 if (strcmp(m_arch, "powerpc") == 0) { 135 atf_tc_expect_timeout("PR port-powerpc/44387"); 136 } 137 138 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 139 140 global_x = 0; 141 count = count2 = 10000000; 142 143 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 144 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex2_threadfunc, &count2)); 145 146 printf("1: Thread %p\n", pthread_self()); 147 148 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 149 150 while (count--) { 151 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 152 global_x++; 153 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 154 } 155 156 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 157 158 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 159 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 160 global_x, (long)joinval); 161 ATF_REQUIRE_EQ(global_x, 20000000); 162 163 /* XXX force a timeout in ppc case since an un-triggered race 164 otherwise looks like a "failure" */ 165 if (strcmp(m_arch, "powerpc") == 0) { 166 /* We sleep for longer than the timeout to make ATF not 167 complain about unexpected success */ 168 sleep(41); 169 } 170 } 171 172 static void * 173 mutex3_threadfunc(void *arg) 174 { 175 long count = *(int *)arg; 176 177 printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count); 178 179 while (count--) { 180 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 181 global_x++; 182 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 183 } 184 185 return (void *)count; 186 } 187 188 ATF_TC(mutex3); 189 ATF_TC_HEAD(mutex3, tc) 190 { 191 atf_tc_set_md_var(tc, "descr", "Checks mutexes using a static " 192 "initializer"); 193 if (strcmp(atf_config_get("atf_arch"), "powerpc") == 0) 194 atf_tc_set_md_var(tc, "timeout", "40"); 195 } 196 ATF_TC_BODY(mutex3, tc) 197 { 198 const char *m_arch; 199 int count, count2; 200 pthread_t new; 201 void *joinval; 202 203 printf("1: Mutex-test 3\n"); 204 205 m_arch = atf_config_get("atf_arch"); 206 if (strcmp(m_arch, "powerpc") == 0) { 207 atf_tc_expect_timeout("PR port-powerpc/44387"); 208 } 209 210 global_x = 0; 211 count = count2 = 10000000; 212 213 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 214 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex3_threadfunc, &count2)); 215 216 printf("1: Thread %p\n", pthread_self()); 217 218 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 219 220 while (count--) { 221 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 222 global_x++; 223 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 224 } 225 226 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 227 228 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 229 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 230 global_x, (long)joinval); 231 ATF_REQUIRE_EQ(global_x, 20000000); 232 233 /* XXX force a timeout in ppc case since an un-triggered race 234 otherwise looks like a "failure" */ 235 if (strcmp(m_arch, "powerpc") == 0) { 236 /* We sleep for longer than the timeout to make ATF not 237 complain about unexpected success */ 238 sleep(41); 239 } 240 } 241 242 static void * 243 mutex4_threadfunc(void *arg) 244 { 245 int *param; 246 247 printf("2: Second thread.\n"); 248 249 param = arg; 250 printf("2: Locking mutex\n"); 251 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 252 printf("2: Got mutex. *param = %d\n", *param); 253 (*param)++; 254 255 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 256 257 return param; 258 } 259 260 ATF_TC(mutex4); 261 ATF_TC_HEAD(mutex4, tc) 262 { 263 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 264 } 265 ATF_TC_BODY(mutex4, tc) 266 { 267 int x; 268 pthread_t new; 269 pthread_mutexattr_t mattr; 270 void *joinval; 271 272 printf("1: Mutex-test 4\n"); 273 274 PTHREAD_REQUIRE(pthread_mutexattr_init(&mattr)); 275 PTHREAD_REQUIRE(pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE)); 276 277 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, &mattr)); 278 279 PTHREAD_REQUIRE(pthread_mutexattr_destroy(&mattr)); 280 281 x = 1; 282 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 283 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex4_threadfunc, &x)); 284 285 printf("1: Before recursively acquiring the mutex.\n"); 286 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 287 288 printf("1: Before releasing the mutex once.\n"); 289 sleep(2); 290 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 291 printf("1: After releasing the mutex once.\n"); 292 293 x = 20; 294 295 printf("1: Before releasing the mutex twice.\n"); 296 sleep(2); 297 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 298 printf("1: After releasing the mutex twice.\n"); 299 300 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 301 302 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 303 printf("1: Thread joined. X was %d. Return value (int) was %d\n", 304 x, *(int *)joinval); 305 ATF_REQUIRE_EQ(x, 21); 306 ATF_REQUIRE_EQ(*(int *)joinval, 21); 307 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 308 } 309 310 ATF_TP_ADD_TCS(tp) 311 { 312 ATF_TP_ADD_TC(tp, mutex1); 313 ATF_TP_ADD_TC(tp, mutex2); 314 ATF_TP_ADD_TC(tp, mutex3); 315 ATF_TP_ADD_TC(tp, mutex4); 316 317 return atf_no_error(); 318 } 319
Indexes created Wed Sep 24 05:09:52 GMT 2025