xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2003-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. |
| 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 <semaphore.h> |
| 22 | #include <signal.h> |
| 23 | #include <stdio.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <unistd.h> |
| 26 | |
| 27 | |
| 28 | static pthread_t receiver; |
| 29 | static sem_t sem; |
| 30 | static pthread_barrier_t b; |
| 31 | |
| 32 | static void |
| 33 | handler (int sig) |
| 34 | { |
| 35 | if (sig != SIGUSR1) |
| 36 | { |
| 37 | write (STDOUT_FILENO, "wrong signal\n", 13); |
| 38 | _exit (1); |
| 39 | } |
| 40 | |
| 41 | if (pthread_self () != receiver) |
| 42 | { |
| 43 | write (STDOUT_FILENO, "not the intended receiver\n", 26); |
| 44 | _exit (1); |
| 45 | } |
| 46 | |
| 47 | if (sem_post (&sem) != 0) |
| 48 | { |
| 49 | write (STDOUT_FILENO, "sem_post failed\n", 16); |
| 50 | _exit (1); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | |
| 55 | static void * |
| 56 | tf (void *a) |
| 57 | { |
| 58 | int e = pthread_barrier_wait (&b); |
| 59 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
| 60 | { |
| 61 | puts ("child: barrier_wait failed"); |
| 62 | exit (1); |
| 63 | } |
| 64 | |
| 65 | return NULL; |
| 66 | } |
| 67 | |
| 68 | |
| 69 | int |
| 70 | do_test (void) |
| 71 | { |
| 72 | struct sigaction sa; |
| 73 | sigemptyset (&sa.sa_mask); |
| 74 | sa.sa_flags = 0; |
| 75 | sa.sa_handler = handler; |
| 76 | if (sigaction (SIGUSR1, &sa, NULL) != 0) |
| 77 | { |
| 78 | puts ("sigaction failed"); |
| 79 | exit (1); |
| 80 | } |
| 81 | |
| 82 | #define N 20 |
| 83 | |
| 84 | if (pthread_barrier_init (&b, NULL, N + 1) != 0) |
| 85 | { |
| 86 | puts ("barrier_init failed"); |
| 87 | exit (1); |
| 88 | } |
| 89 | |
| 90 | pthread_attr_t a; |
| 91 | |
| 92 | if (pthread_attr_init (&a) != 0) |
| 93 | { |
| 94 | puts ("attr_init failed"); |
| 95 | exit (1); |
| 96 | } |
| 97 | |
| 98 | if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0) |
| 99 | { |
| 100 | puts ("attr_setstacksize failed"); |
| 101 | return 1; |
| 102 | } |
| 103 | |
| 104 | pthread_t th[N]; |
| 105 | int i; |
| 106 | for (i = 0; i < N; ++i) |
| 107 | if (pthread_create (&th[i], &a, tf, NULL) != 0) |
| 108 | { |
| 109 | puts ("create failed"); |
| 110 | exit (1); |
| 111 | } |
| 112 | |
| 113 | if (pthread_attr_destroy (&a) != 0) |
| 114 | { |
| 115 | puts ("attr_destroy failed"); |
| 116 | exit (1); |
| 117 | } |
| 118 | |
| 119 | if (sem_init (&sem, 0, 0) != 0) |
| 120 | { |
| 121 | puts ("sem_init failed"); |
| 122 | exit (1); |
| 123 | } |
| 124 | |
| 125 | for (i = 0; i < N * 10; ++i) |
| 126 | { |
| 127 | receiver = th[i % N]; |
| 128 | |
| 129 | if (pthread_kill (receiver, SIGUSR1) != 0) |
| 130 | { |
| 131 | puts ("kill failed"); |
| 132 | exit (1); |
| 133 | } |
| 134 | |
| 135 | if (TEMP_FAILURE_RETRY (sem_wait (&sem)) != 0) |
| 136 | { |
| 137 | puts ("sem_wait failed"); |
| 138 | exit (1); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | int e = pthread_barrier_wait (&b); |
| 143 | if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) |
| 144 | { |
| 145 | puts ("barrier_wait failed"); |
| 146 | exit (1); |
| 147 | } |
| 148 | |
| 149 | for (i = 0; i < N; ++i) |
| 150 | if (pthread_join (th[i], NULL) != 0) |
| 151 | { |
| 152 | puts ("join failed"); |
| 153 | exit (1); |
| 154 | } |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | |
| 160 | #define TEST_FUNCTION do_test () |
| 161 | #include "../test-skeleton.c" |