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 #if defined(__powerpc__) 121 atf_tc_set_md_var(tc, "timeout", "40"); 122 #endif 123 } 124 ATF_TC_BODY(mutex2, tc) 125 { 126 int count, count2; 127 pthread_t new; 128 void *joinval; 129 130 printf("1: Mutex-test 2\n"); 131 132 #if defined(__powerpc__) 133 atf_tc_expect_timeout("PR port-powerpc/44387"); 134 #endif 135 136 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL)); 137 138 global_x = 0; 139 count = count2 = 10000000; 140 141 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 142 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex2_threadfunc, &count2)); 143 144 printf("1: Thread %p\n", pthread_self()); 145 146 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 147 148 while (count--) { 149 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 150 global_x++; 151 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 152 } 153 154 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 155 156 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 157 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 158 global_x, (long)joinval); 159 ATF_REQUIRE_EQ(global_x, 20000000); 160 161 #if defined(__powerpc__) 162 /* XXX force a timeout in ppc case since an un-triggered race 163 otherwise looks like a "failure" */ 164 /* We sleep for longer than the timeout to make ATF not 165 complain about unexpected success */ 166 sleep(41); 167 #endif 168 } 169 170 static void * 171 mutex3_threadfunc(void *arg) 172 { 173 long count = *(int *)arg; 174 175 printf("2: Second thread (%p). Count is %ld\n", pthread_self(), count); 176 177 while (count--) { 178 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 179 global_x++; 180 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 181 } 182 183 return (void *)count; 184 } 185 186 ATF_TC(mutex3); 187 ATF_TC_HEAD(mutex3, tc) 188 { 189 atf_tc_set_md_var(tc, "descr", "Checks mutexes using a static " 190 "initializer"); 191 #if defined(__powerpc__) 192 atf_tc_set_md_var(tc, "timeout", "40"); 193 #endif 194 } 195 ATF_TC_BODY(mutex3, tc) 196 { 197 int count, count2; 198 pthread_t new; 199 void *joinval; 200 201 printf("1: Mutex-test 3\n"); 202 203 #if defined(__powerpc__) 204 atf_tc_expect_timeout("PR port-powerpc/44387"); 205 #endif 206 207 global_x = 0; 208 count = count2 = 10000000; 209 210 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 211 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex3_threadfunc, &count2)); 212 213 printf("1: Thread %p\n", pthread_self()); 214 215 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 216 217 while (count--) { 218 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 219 global_x++; 220 PTHREAD_REQUIRE(pthread_mutex_unlock(&static_mutex)); 221 } 222 223 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 224 225 PTHREAD_REQUIRE(pthread_mutex_lock(&static_mutex)); 226 printf("1: Thread joined. X was %d. Return value (long) was %ld\n", 227 global_x, (long)joinval); 228 ATF_REQUIRE_EQ(global_x, 20000000); 229 230 #if defined(__powerpc__) 231 /* XXX force a timeout in ppc case since an un-triggered race 232 otherwise looks like a "failure" */ 233 /* We sleep for longer than the timeout to make ATF not 234 complain about unexpected success */ 235 sleep(41); 236 #endif 237 } 238 239 static void * 240 mutex4_threadfunc(void *arg) 241 { 242 int *param; 243 244 printf("2: Second thread.\n"); 245 246 param = arg; 247 printf("2: Locking mutex\n"); 248 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 249 printf("2: Got mutex. *param = %d\n", *param); 250 (*param)++; 251 252 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 253 254 return param; 255 } 256 257 ATF_TC(mutex4); 258 ATF_TC_HEAD(mutex4, tc) 259 { 260 atf_tc_set_md_var(tc, "descr", "Checks mutexes"); 261 } 262 ATF_TC_BODY(mutex4, tc) 263 { 264 int x; 265 pthread_t new; 266 pthread_mutexattr_t mattr; 267 void *joinval; 268 269 printf("1: Mutex-test 4\n"); 270 271 PTHREAD_REQUIRE(pthread_mutexattr_init(&mattr)); 272 PTHREAD_REQUIRE(pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE)); 273 274 PTHREAD_REQUIRE(pthread_mutex_init(&mutex, &mattr)); 275 276 PTHREAD_REQUIRE(pthread_mutexattr_destroy(&mattr)); 277 278 x = 1; 279 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 280 PTHREAD_REQUIRE(pthread_create(&new, NULL, mutex4_threadfunc, &x)); 281 282 printf("1: Before recursively acquiring the mutex.\n"); 283 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 284 285 printf("1: Before releasing the mutex once.\n"); 286 sleep(2); 287 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 288 printf("1: After releasing the mutex once.\n"); 289 290 x = 20; 291 292 printf("1: Before releasing the mutex twice.\n"); 293 sleep(2); 294 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 295 printf("1: After releasing the mutex twice.\n"); 296 297 PTHREAD_REQUIRE(pthread_join(new, &joinval)); 298 299 PTHREAD_REQUIRE(pthread_mutex_lock(&mutex)); 300 printf("1: Thread joined. X was %d. Return value (int) was %d\n", 301 x, *(int *)joinval); 302 ATF_REQUIRE_EQ(x, 21); 303 ATF_REQUIRE_EQ(*(int *)joinval, 21); 304 PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex)); 305 } 306 307 ATF_TP_ADD_TCS(tp) 308 { 309 ATF_TP_ADD_TC(tp, mutex1); 310 ATF_TP_ADD_TC(tp, mutex2); 311 ATF_TP_ADD_TC(tp, mutex3); 312 ATF_TP_ADD_TC(tp, mutex4); 313 314 return atf_no_error(); 315 } 316