1 /* $NetBSD: t_mutex.c,v 1.7 2014/11/04 00:20:19 justin 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 1.7 2014/11/04 00:20:19 justin 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 41 #include "h_common.h" 42 43 static pthread_mutex_t mutex; 44 static pthread_mutex_t static_mutex = PTHREAD_MUTEX_INITIALIZER; 45 static int global_x; 46 47 static void * 48 mutex1_threadfunc(void *arg) 49 { 50 int *param; 51 52 printf("2: Second thread.\n"); 53 54 param = arg; 55 printf("2: Locking mutex\n"); 56 pthread_mutex_lock(&mutex); 57 printf("2: Got mutex. *param = %d\n", *param); 58 ATF_REQUIRE_EQ(*param, 20); 59 (*param)++; 60 61 pthread_mutex_unlock(&mutex); 62 63 return param; 64 } 65 66 ATF_TC(mutex1); 67 ATF_TC_HEAD(mutex1, tc) 68 { 69 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 70 } 71 ATF_TC_BODY(mutex1, tc) 72 { 73 int x; 74 pthread_t new; 75 void *joinval; 76 77 printf("1: Mutex-test 1\n"); 78 79 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 80 x = 1; 81 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 82 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex1_threadfunc, &x)); 83 printf("1: Before changing the value.\n"); 84 sleep(2); 85 x = 20; 86 printf("1: Before releasing the mutex.\n"); 87 sleep(2); 88 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 89 printf("1: After releasing the mutex.\n"); 90 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 91 92 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 93 printf("1: Thread joined. X was %d. Return value (int) was %d\n", 94 x, *(int *)joinval); 95 ATF_REQUIRE_EQ(x, 21); 96 ATF_REQUIRE_EQ(*(int *)joinval, 21); 97 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 98 } 99 100 static void * 101 mutex2_threadfunc(void *arg) 102 { 103 long count = *(int *)arg; 104 105 printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count); 106 107 while (count--) { 108 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 109 global_x++; 110 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 111 } 112 113 return (void *)count; 114 } 115 116 ATF_TC(mutex2); 117 ATF_TC_HEAD(mutex2, tc) 118 { 119 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 120 #ifdef __NetBSD__ 121 #if defined(__powerpc__) 122 atf_tc_set_md_var(tc, "timeout", "40"); 123 #endif 124 #endif 125 } 126 ATF_TC_BODY(mutex2, tc) 127 { 128 int count, count2; 129 pthread_t new; 130 void *joinval; 131 132 printf("1: Mutex-test 2\n"); 133 134 #ifdef __NetBSD__ 135 #if defined(__powerpc__) 136 atf_tc_expect_timeout("PR port-powerpc/44387"); 137 #endif 138 #endif 139 140 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 141 142 global_x = 0; 143 count = count2 = 10000000; 144 145 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 146 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex2_threadfunc, &count2)); 147 148 printf("1: Thread %p\n", pthread_self()); 149 150 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 151 152 while (count--) { 153 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 154 global_x++; 155 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 156 } 157 158 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 159 160 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 161 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 162 global_x, (long)joinval); 163 ATF_REQUIRE_EQ(global_x, 20000000); 164 165 #ifdef __NetBSD__ 166 #if defined(__powerpc__) 167 /* XXX force a timeout in ppc case since an un-triggered race 168 otherwise looks like a "failure" */ 169 /* We sleep for longer than the timeout to make ATF not 170 complain about unexpected success */ 171 sleep(41); 172 #endif 173 #endif 174 } 175 176 static void * 177 mutex3_threadfunc(void *arg) 178 { 179 long count = *(int *)arg; 180 181 printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count); 182 183 while (count--) { 184 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 185 global_x++; 186 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 187 } 188 189 return (void *)count; 190 } 191 192 ATF_TC(mutex3); 193 ATF_TC_HEAD(mutex3, tc) 194 { 195 atf_tc_set_md_var(tc, "descr", "Checks mutexes using a static " 196 "initializer"); 197 #ifdef __NetBSD__ 198 #if defined(__powerpc__) 199 atf_tc_set_md_var(tc, "timeout", "40"); 200 #endif 201 #endif 202 } 203 ATF_TC_BODY(mutex3, tc) 204 { 205 int count, count2; 206 pthread_t new; 207 void *joinval; 208 209 printf("1: Mutex-test 3\n"); 210 211 #ifdef __NetBSD__ 212 #if defined(__powerpc__) 213 atf_tc_expect_timeout("PR port-powerpc/44387"); 214 #endif 215 #endif 216 217 global_x = 0; 218 count = count2 = 10000000; 219 220 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 221 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex3_threadfunc, &count2)); 222 223 printf("1: Thread %p\n", pthread_self()); 224 225 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 226 227 while (count--) { 228 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 229 global_x++; 230 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 231 } 232 233 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 234 235 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 236 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 237 global_x, (long)joinval); 238 ATF_REQUIRE_EQ(global_x, 20000000); 239 240 #ifdef __NetBSD__ 241 #if defined(__powerpc__) 242 /* XXX force a timeout in ppc case since an un-triggered race 243 otherwise looks like a "failure" */ 244 /* We sleep for longer than the timeout to make ATF not 245 complain about unexpected success */ 246 sleep(41); 247 #endif 248 #endif 249 } 250 251 static void * 252 mutex4_threadfunc(void *arg) 253 { 254 int *param; 255 256 printf("2: Second thread.\n"); 257 258 param = arg; 259 printf("2: Locking mutex\n"); 260 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 261 printf("2: Got mutex. *param = %d\n", *param); 262 (*param)++; 263 264 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 265 266 return param; 267 } 268 269 ATF_TC(mutex4); 270 ATF_TC_HEAD(mutex4, tc) 271 { 272 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 273 } 274 ATF_TC_BODY(mutex4, tc) 275 { 276 int x; 277 pthread_t new; 278 pthread_mutexattr_t mattr; 279 void *joinval; 280 281 printf("1: Mutex-test 4\n"); 282 283 PTHREAD_REQUIRE(pthread_mutexattr_init(&mattr)); 284 PTHREAD_REQUIRE(pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE)); 285 286 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, &mattr)); 287 288 PTHREAD_REQUIRE(pthread_mutexattr_destroy(&mattr)); 289 290 x = 1; 291 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 292 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex4_threadfunc, &x)); 293 294 printf("1: Before recursively acquiring the mutex.\n"); 295 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 296 297 printf("1: Before releasing the mutex once.\n"); 298 sleep(2); 299 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 300 printf("1: After releasing the mutex once.\n"); 301 302 x = 20; 303 304 printf("1: Before releasing the mutex twice.\n"); 305 sleep(2); 306 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 307 printf("1: After releasing the mutex twice.\n"); 308 309 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 310 311 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 312 printf("1: Thread joined. X was %d. Return value (int) was %d\n", 313 x, *(int *)joinval); 314 ATF_REQUIRE_EQ(x, 21); 315 ATF_REQUIRE_EQ(*(int *)joinval, 21); 316 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 317 } 318 319 ATF_TP_ADD_TCS(tp) 320 { 321 ATF_TP_ADD_TC(tp, mutex1); 322 ATF_TP_ADD_TC(tp, mutex2); 323 ATF_TP_ADD_TC(tp, mutex3); 324 ATF_TP_ADD_TC(tp, mutex4); 325 326 return atf_no_error(); 327 } 328