1 /****************************************************************************** 2 * 3 * Copyright International Business Machines Corp., 2008 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 * 19 * NAME 20 * testpi-6.c 21 * 22 * DESCRIPTION 23 * This testcase verifies if a thread can lock the robust mutex multiple 24 * times. 25 * 26 * USAGE: 27 * Use run_auto.sh script in current directory to build and run test. 28 * 29 * AUTHOR 30 * 31 * 32 * HISTORY 33 * 2010-04-22 Code cleanup by Gowrishankar 34 * 35 * 36 *****************************************************************************/ 37 38 #include <stdio.h> 39 #include <pthread.h> 40 #include <string.h> 41 #include <unistd.h> 42 #include <librttest.h> 43 44 #if HAS_PTHREAD_MUTEXTATTR_ROBUST_APIS 45 pthread_mutex_t child_mutex; 46 47 void *child_thread(void *arg) 48 { 49 int ret; 50 51 ret = pthread_mutex_lock(&child_mutex); 52 if (ret != 0) 53 printf("child thread: Failed to lock child_mutex: %d\n", ret); 54 else 55 printf("child_thread: got lock\n"); 56 57 sleep(2); 58 59 printf("child_thread: Trying to get lock 2nd time\n"); 60 ret = pthread_mutex_lock(&child_mutex); 61 if (ret != 0) 62 printf("child thread: Failed to lock child_mutex: %d\n", ret); 63 else 64 printf("child_thread: got lock 2nd time !!\n"); 65 66 return NULL; 67 } 68 69 int do_test(int argc, char **argv) 70 { 71 pthread_mutexattr_t mutexattr; 72 int retc, robust; 73 74 if (pthread_mutexattr_init(&mutexattr) != 0) 75 printf("Failed to init mutexattr\n"); 76 77 if (pthread_mutexattr_setrobust_np(&mutexattr, 78 PTHREAD_MUTEX_ROBUST_NP) != 0) 79 printf("Can't set robust mutex\n"); 80 81 if (pthread_mutexattr_getrobust_np(&mutexattr, &robust) != 0) 82 printf("Can't get mutexattr protocol\n"); 83 else 84 printf("robust in mutexattr is %d\n", robust); 85 86 retc = pthread_mutex_init(&child_mutex, &mutexattr); 87 if (retc != 0) 88 printf("Failed to init mutex: %d\n", retc); 89 90 create_other_thread(child_thread, NULL); 91 join_threads(); 92 93 return 0; 94 } 95 #else 96 int do_test(int argc, char **argv) 97 { 98 printf("Your system doesn't have robust pthread mutex support\n"); 99 return 1; 100 } 101 #endif 102 103 #include "test-skeleton.c" 104
