| /* This testcase is part of GDB, the GNU debugger. |
| |
| Copyright 2015-2021 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #define _GNU_SOURCE |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <pthread.h> |
| #include <assert.h> |
| |
| #define NUM_THREADS 3 |
| |
| struct thread_data |
| { |
| const char *name; |
| pthread_barrier_t *barrier; |
| }; |
| |
| static void * |
| thread_func (void *varg) |
| { |
| struct thread_data *arg = (struct thread_data *) varg; |
| int res; |
| |
| res = pthread_setname_np (pthread_self (), arg->name); |
| assert (res == 0); |
| |
| pthread_barrier_wait (arg->barrier); |
| |
| pthread_barrier_wait (arg->barrier); |
| |
| return NULL; |
| } |
| |
| static void |
| all_threads_ready (void) |
| { |
| } |
| |
| int |
| main (int argc, char **argv) |
| { |
| pthread_t threads[NUM_THREADS]; |
| struct thread_data args[NUM_THREADS]; |
| pthread_barrier_t barrier; |
| int i, res; |
| const char *names[] = { "carrot", "potato", "celery" }; |
| |
| alarm (20); |
| |
| /* Make sure that NAMES contains NUM_THREADS elements. */ |
| assert (sizeof (names) / sizeof (names[0]) == NUM_THREADS); |
| |
| res = pthread_barrier_init (&barrier, NULL, NUM_THREADS + 1); |
| assert (res == 0);; |
| |
| res = pthread_setname_np (pthread_self (), "main"); |
| assert (res == 0); |
| |
| for (i = 0; i < NUM_THREADS; i++) |
| { |
| struct thread_data *arg = &args[i]; |
| |
| arg->name = names[i]; |
| arg->barrier = &barrier; |
| |
| res = pthread_create (&threads[i], NULL, thread_func, arg); |
| assert (res == 0); |
| } |
| |
| pthread_barrier_wait (&barrier); |
| |
| all_threads_ready (); |
| |
| pthread_barrier_wait (&barrier); |
| |
| for (i = 0; i < NUM_THREADS; i++) |
| { |
| res = pthread_join (threads[i], NULL); |
| assert (res == 0); |
| } |
| |
| return 0; |
| } |