1 /* 2 * Copyright (c) 2004, Bull S.A.. All rights reserved. 3 * Created by: Sebastien Decugis 4 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of version 2 of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 * 13 * You should have received a copy of the GNU General Public License along 14 * with this program; if not, write the Free Software Foundation, Inc., 15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 16 17 * This sample test aims to check the following assertion: 18 * 19 * The function does not return EINTR 20 21 * The steps are: 22 * -> kill a thread which calls pthread_sigmask 23 * -> check that EINTR is never returned 24 25 */ 26 27 /* We are testing conformance to IEEE Std 1003.1, 2003 Edition */ 28 #define _POSIX_C_SOURCE 200112L 29 30 /********************************************************************************************/ 31 /****************************** standard includes *****************************************/ 32 /********************************************************************************************/ 33 #include <pthread.h> 34 #include <stdarg.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <unistd.h> 39 40 #include <semaphore.h> 41 #include <errno.h> 42 #include <signal.h> 43 44 /********************************************************************************************/ 45 /****************************** Test framework *****************************************/ 46 /********************************************************************************************/ 47 #include "../testfrmw/testfrmw.h" 48 #include "../testfrmw/testfrmw.c" 49 /* This header is responsible for defining the following macros: 50 * UNRESOLVED(ret, descr); 51 * where descr is a description of the error and ret is an int (error code for example) 52 * FAILED(descr); 53 * where descr is a short text saying why the test has failed. 54 * PASSED(); 55 * No parameter. 56 * 57 * Both three macros shall terminate the calling process. 58 * The testcase shall not terminate in any other maneer. 59 * 60 * The other file defines the functions 61 * void output_init() 62 * void output(char * string, ...) 63 * 64 * Those may be used to output information. 65 */ 66 67 /********************************************************************************************/ 68 /********************************** Configuration ******************************************/ 69 /********************************************************************************************/ 70 #ifndef VERBOSE 71 #define VERBOSE 1 72 #endif 73 74 #define WITH_SYNCHRO 75 76 /********************************************************************************************/ 77 /*********************************** Test cases *****************************************/ 78 /********************************************************************************************/ 79 80 char do_it = 1; 81 unsigned long count_ope = 0; 82 #ifdef WITH_SYNCHRO 83 sem_t semsig1; 84 sem_t semsig2; 85 unsigned long count_sig = 0; 86 #endif 87 88 sigset_t usersigs; 89 90 typedef struct { 91 int sig; 92 #ifdef WITH_SYNCHRO 93 sem_t *sem; 94 #endif 95 } thestruct; 96 97 /* the following function keeps on sending the signal to the process */ 98 void *sendsig(void *arg) 99 { 100 thestruct *thearg = (thestruct *) arg; 101 int ret; 102 pid_t process; 103 104 process = getpid(); 105 106 /* We block the signals SIGUSR1 and SIGUSR2 for this THREAD */ 107 ret = pthread_sigmask(SIG_BLOCK, &usersigs, NULL); 108 109 if (ret != 0) { 110 UNRESOLVED(ret, 111 "Unable to block SIGUSR1 and SIGUSR2 in signal thread"); 112 } 113 114 while (do_it) { 115 #ifdef WITH_SYNCHRO 116 117 if ((ret = sem_wait(thearg->sem))) { 118 UNRESOLVED(errno, "Sem_wait in sendsig"); 119 } 120 121 count_sig++; 122 #endif 123 124 ret = kill(process, thearg->sig); 125 126 if (ret != 0) { 127 UNRESOLVED(errno, "Kill in sendsig"); 128 } 129 130 } 131 132 return NULL; 133 } 134 135 /* Next are the signal handlers. */ 136 /* This one is registered for signal SIGUSR1 */ 137 void sighdl1(int sig) 138 { 139 #ifdef WITH_SYNCHRO 140 141 if (sem_post(&semsig1)) { 142 UNRESOLVED(errno, "Sem_post in signal handler 1"); 143 } 144 #endif 145 } 146 147 /* This one is registered for signal SIGUSR2 */ 148 void sighdl2(int sig) 149 { 150 #ifdef WITH_SYNCHRO 151 152 if (sem_post(&semsig2)) { 153 UNRESOLVED(errno, "Sem_post in signal handler 2"); 154 } 155 #endif 156 } 157 158 int init_ctl; 159 /* Init function */ 160 void initializer(void) 161 { 162 init_ctl++; 163 return; 164 } 165 166 /* Test function -- calls pthread_sigmask() and checks that EINTR is never returned. */ 167 void *test(void *arg) 168 { 169 int ret = 0; 170 sigset_t set; 171 int i, j = 0; 172 int signals[] = { SIGBUS, SIGKILL, SIGABRT, SIGCHLD, SIGHUP }; 173 #define NSIG (sizeof(signals)/sizeof(int)) 174 int operation[] = { SIG_SETMASK, SIG_BLOCK, SIG_UNBLOCK }; 175 176 ret = sigemptyset(&set); 177 178 if (ret != 0) { 179 UNRESOLVED(ret, "Failed to initialize signal set"); 180 } 181 182 /* We don't block the signals SIGUSR1 and SIGUSR2 for this THREAD */ 183 ret = pthread_sigmask(SIG_UNBLOCK, &usersigs, NULL); 184 185 if (ret != 0) { 186 UNRESOLVED(ret, 187 "Unable to unblock SIGUSR1 and SIGUSR2 in worker thread"); 188 } 189 190 while (do_it) { 191 count_ope++; 192 193 for (i = 0; i < 3; i++) { 194 j++; 195 j %= 2 * NSIG; 196 197 if (j >= NSIG) 198 ret = sigdelset(&set, signals[j - NSIG]); 199 else 200 ret = sigaddset(&set, signals[j]); 201 202 if (ret != 0) { 203 UNRESOLVED(errno, 204 "Failed to initialize signal set"); 205 } 206 207 ret = pthread_sigmask(operation[i], &set, NULL); 208 209 if (ret == EINTR) { 210 FAILED("pthread_sigmask returned EINTR"); 211 } 212 213 if (ret != 0) { 214 UNRESOLVED(ret, 215 "Failed to initialize signal set"); 216 } 217 } 218 } 219 220 return NULL; 221 } 222 223 /* Main function */ 224 int main(void) 225 { 226 int ret; 227 pthread_t th_work, th_sig1, th_sig2; 228 thestruct arg1, arg2; 229 230 struct sigaction sa; 231 232 /* Initialize output routine */ 233 output_init(); 234 235 /* We need to register the signal handlers for the PROCESS */ 236 sigemptyset(&sa.sa_mask); 237 sa.sa_flags = 0; 238 sa.sa_handler = sighdl1; 239 240 if ((ret = sigaction(SIGUSR1, &sa, NULL))) { 241 UNRESOLVED(ret, "Unable to register signal handler1"); 242 } 243 244 sa.sa_handler = sighdl2; 245 246 if ((ret = sigaction(SIGUSR2, &sa, NULL))) { 247 UNRESOLVED(ret, "Unable to register signal handler2"); 248 } 249 250 /* We prepare a signal set which includes SIGUSR1 and SIGUSR2 */ 251 sigemptyset(&usersigs); 252 253 ret = sigaddset(&usersigs, SIGUSR1); 254 255 ret |= sigaddset(&usersigs, SIGUSR2); 256 257 if (ret != 0) { 258 UNRESOLVED(ret, "Unable to add SIGUSR1 or 2 to a signal set"); 259 } 260 261 /* We now block the signals SIGUSR1 and SIGUSR2 for this THREAD */ 262 ret = pthread_sigmask(SIG_BLOCK, &usersigs, NULL); 263 264 if (ret != 0) { 265 UNRESOLVED(ret, 266 "Unable to block SIGUSR1 and SIGUSR2 in main thread"); 267 } 268 #ifdef WITH_SYNCHRO 269 if (sem_init(&semsig1, 0, 1)) { 270 UNRESOLVED(errno, "Semsig1 init"); 271 } 272 273 if (sem_init(&semsig2, 0, 1)) { 274 UNRESOLVED(errno, "Semsig2 init"); 275 } 276 #endif 277 278 if ((ret = pthread_create(&th_work, NULL, test, NULL))) { 279 UNRESOLVED(ret, "Worker thread creation failed"); 280 } 281 282 arg1.sig = SIGUSR1; 283 arg2.sig = SIGUSR2; 284 #ifdef WITH_SYNCHRO 285 arg1.sem = &semsig1; 286 arg2.sem = &semsig2; 287 #endif 288 289 if ((ret = pthread_create(&th_sig1, NULL, sendsig, (void *)&arg1))) { 290 UNRESOLVED(ret, "Signal 1 sender thread creation failed"); 291 } 292 293 if ((ret = pthread_create(&th_sig2, NULL, sendsig, (void *)&arg2))) { 294 UNRESOLVED(ret, "Signal 2 sender thread creation failed"); 295 } 296 297 /* Let's wait for a while now */ 298 sleep(1); 299 300 /* Now stop the threads and join them */ 301 do { 302 do_it = 0; 303 } 304 while (do_it); 305 306 if ((ret = pthread_join(th_sig1, NULL))) { 307 UNRESOLVED(ret, "Signal 1 sender thread join failed"); 308 } 309 310 if ((ret = pthread_join(th_sig2, NULL))) { 311 UNRESOLVED(ret, "Signal 2 sender thread join failed"); 312 } 313 314 if ((ret = pthread_join(th_work, NULL))) { 315 UNRESOLVED(ret, "Worker thread join failed"); 316 } 317 #if VERBOSE > 0 318 output("Test executed successfully.\n"); 319 320 output(" %d operations.\n", count_ope); 321 322 #ifdef WITH_SYNCHRO 323 output(" %d signals were sent meanwhile.\n", count_sig); 324 325 #endif 326 #endif 327 PASSED; 328 } 329
