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- /* This test program is part of GDB, The GNU debugger.
- Copyright 2004-2022 Free Software Foundation, Inc.
- Originally written by Jeff Johnston <jjohnstn@redhat.com>,
- contributed by Red Hat
- This file is part of GDB.
- 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/>. */
- #include <pthread.h>
- #include <semaphore.h>
- #include <stdio.h>
- #include <limits.h>
- #include <errno.h>
- sem_t semaphore;
- #ifdef HAVE_TLS
- __thread int tlsvar;
- #endif
- void *
- thread_function (void *arg)
- {
- #ifdef HAVE_TLS
- tlsvar = 2;
- #endif
- while (sem_wait (&semaphore) != 0)
- {
- if (errno != EINTR)
- {
- perror ("thread_function");
- return NULL;
- }
- }
- printf ("Thread executing\n"); /* tlsvar-is-set */
- return NULL;
- }
- int
- main (int argc, char **argv)
- {
- pthread_attr_t attr;
- pthread_attr_init (&attr);
- pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);
- if (sem_init (&semaphore, 0, 0) == -1)
- {
- perror ("semaphore");
- return -1;
- }
- #ifdef HAVE_TLS
- tlsvar = 1;
- #endif
- /* Create a thread, wait for it to complete. */
- {
- pthread_t thread;
- pthread_create (&thread, &attr, thread_function, NULL);
- sem_post (&semaphore);
- pthread_join (thread, NULL);
- }
- pthread_attr_destroy (&attr);
- return 0;
- }
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