lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2004-2015 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2004. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library 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 the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <errno.h> |
| 20 | #include <pthread.h> |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include <unistd.h> |
| 25 | #include <sys/time.h> |
| 26 | |
| 27 | |
| 28 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; |
| 29 | static pthread_mutex_t mut = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; |
| 30 | static pthread_mutex_t mut2 = PTHREAD_MUTEX_INITIALIZER; |
| 31 | |
| 32 | static void * |
| 33 | tf (void *p) |
| 34 | { |
| 35 | if (pthread_mutex_lock (&mut) != 0) |
| 36 | { |
| 37 | printf ("%s: 1st mutex_lock failed\n", __func__); |
| 38 | exit (1); |
| 39 | } |
| 40 | if (pthread_mutex_lock (&mut) != 0) |
| 41 | { |
| 42 | printf ("%s: 2nd mutex_lock failed\n", __func__); |
| 43 | exit (1); |
| 44 | } |
| 45 | if (pthread_mutex_lock (&mut) != 0) |
| 46 | { |
| 47 | printf ("%s: 3rd mutex_lock failed\n", __func__); |
| 48 | exit (1); |
| 49 | } |
| 50 | |
| 51 | if (pthread_mutex_unlock (&mut2) != 0) |
| 52 | { |
| 53 | printf ("%s: mutex_unlock failed\n", __func__); |
| 54 | exit (1); |
| 55 | } |
| 56 | |
| 57 | struct timeval tv; |
| 58 | gettimeofday (&tv, NULL); |
| 59 | struct timespec ts; |
| 60 | TIMEVAL_TO_TIMESPEC (&tv, &ts); |
| 61 | ts.tv_sec += p == NULL ? 100 : 1; |
| 62 | |
| 63 | int err = pthread_cond_timedwait (&cond, &mut, &ts); |
| 64 | if ((err != 0 && p == NULL) || (err != ETIMEDOUT && p != NULL)) |
| 65 | { |
| 66 | printf ("%s: cond_wait failed\n", __func__); |
| 67 | exit (1); |
| 68 | } |
| 69 | |
| 70 | if (pthread_mutex_unlock (&mut) != 0) |
| 71 | { |
| 72 | printf ("%s: 1st mutex_unlock failed\n", __func__); |
| 73 | exit (1); |
| 74 | } |
| 75 | if (pthread_mutex_unlock (&mut) != 0) |
| 76 | { |
| 77 | printf ("%s: 2nd mutex_unlock failed\n", __func__); |
| 78 | exit (1); |
| 79 | } |
| 80 | if (pthread_mutex_unlock (&mut) != 0) |
| 81 | { |
| 82 | printf ("%s: 3rd mutex_unlock failed\n", __func__); |
| 83 | exit (1); |
| 84 | } |
| 85 | |
| 86 | puts ("child: done"); |
| 87 | |
| 88 | return NULL; |
| 89 | } |
| 90 | |
| 91 | |
| 92 | static int |
| 93 | do_test (void) |
| 94 | { |
| 95 | if (pthread_mutex_lock (&mut2) != 0) |
| 96 | { |
| 97 | puts ("1st mutex_lock failed"); |
| 98 | return 1; |
| 99 | } |
| 100 | |
| 101 | puts ("parent: create 1st child"); |
| 102 | |
| 103 | pthread_t th; |
| 104 | int err = pthread_create (&th, NULL, tf, NULL); |
| 105 | if (err != 0) |
| 106 | { |
| 107 | printf ("parent: cannot 1st create thread: %s\n", strerror (err)); |
| 108 | return 1; |
| 109 | } |
| 110 | |
| 111 | /* We have to synchronize with the child. */ |
| 112 | if (pthread_mutex_lock (&mut2) != 0) |
| 113 | { |
| 114 | puts ("2nd mutex_lock failed"); |
| 115 | return 1; |
| 116 | } |
| 117 | |
| 118 | /* Give the child to reach to pthread_cond_wait. */ |
| 119 | sleep (1); |
| 120 | |
| 121 | if (pthread_cond_signal (&cond) != 0) |
| 122 | { |
| 123 | puts ("cond_signal failed"); |
| 124 | return 1; |
| 125 | } |
| 126 | |
| 127 | err = pthread_join (th, NULL); |
| 128 | if (err != 0) |
| 129 | { |
| 130 | printf ("parent: failed to join: %s\n", strerror (err)); |
| 131 | return 1; |
| 132 | } |
| 133 | |
| 134 | |
| 135 | puts ("parent: create 2nd child"); |
| 136 | |
| 137 | err = pthread_create (&th, NULL, tf, (void *) 1l); |
| 138 | if (err != 0) |
| 139 | { |
| 140 | printf ("parent: cannot 2nd create thread: %s\n", strerror (err)); |
| 141 | return 1; |
| 142 | } |
| 143 | |
| 144 | err = pthread_join (th, NULL); |
| 145 | if (err != 0) |
| 146 | { |
| 147 | printf ("parent: failed to join: %s\n", strerror (err)); |
| 148 | return 1; |
| 149 | } |
| 150 | |
| 151 | puts ("done"); |
| 152 | |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | |
| 157 | #define TEST_FUNCTION do_test () |
| 158 | #define TIMEOUT 6 |
| 159 | #include "../test-skeleton.c" |