1 /* Copyright (C) 2002-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #include <pthread.h> 19 #include <signal.h> 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <unistd.h> 23 24 static int do_test (void); 25 26 #define TEST_FUNCTION do_test () 27 #include "../test-skeleton.c" 28 29 static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER; 30 static pthread_rwlock_t r; 31 32 33 static void * tf(void * arg)34tf (void *arg) 35 { 36 if (pthread_rwlock_wrlock (&r) == 0) 37 { 38 puts ("child: rwlock_wrlock succeeded"); 39 exit (1); 40 } 41 42 puts ("child: rwlock_wrlock returned"); 43 44 exit (1); 45 } 46 47 48 static int do_test(void)49do_test (void) 50 { 51 pthread_t th; 52 53 if (pthread_rwlock_init (&r, NULL) != 0) 54 { 55 puts ("rwlock_init failed"); 56 return 1; 57 } 58 59 if (pthread_rwlock_wrlock (&r) != 0) 60 { 61 puts ("rwlock_wrlock failed"); 62 return 1; 63 } 64 65 if (pthread_mutex_lock (&m) != 0) 66 { 67 puts ("mutex_lock failed"); 68 return 1; 69 } 70 71 if (pthread_create (&th, NULL, tf, NULL) != 0) 72 { 73 puts ("create failed"); 74 return 1; 75 } 76 77 delayed_exit (1); 78 /* This call should never return. */ 79 xpthread_mutex_lock (&m); 80 81 puts ("2nd mutex_lock returned"); 82 return 1; 83 } 84