| /* This testcase is part of GDB, the GNU debugger. |
| |
| Copyright 2014-2021 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/>. */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <pthread.h> |
| #include <signal.h> |
| |
| pthread_barrier_t barrier; |
| sig_atomic_t got_sigusr1; |
| sig_atomic_t got_sigusr2; |
| |
| void |
| handler_sigusr1 (int sig) |
| { |
| got_sigusr1 = 1; |
| } |
| |
| void |
| handler_sigusr2 (int sig) |
| { |
| got_sigusr2 = 1; |
| } |
| |
| void * |
| thread_function (void *arg) |
| { |
| volatile unsigned int count = 1; |
| |
| pthread_barrier_wait (&barrier); |
| |
| while (count++ != 0) |
| { |
| if (got_sigusr1 && got_sigusr2) |
| break; |
| usleep (1); |
| } |
| } |
| |
| void |
| all_threads_started (void) |
| { |
| } |
| |
| void |
| all_threads_signalled (void) |
| { |
| } |
| |
| void |
| end (void) |
| { |
| } |
| |
| int |
| main (void) |
| { |
| pthread_t child_thread[2]; |
| int i; |
| |
| signal (SIGUSR1, handler_sigusr1); |
| signal (SIGUSR2, handler_sigusr2); |
| |
| for (i = 0; i < 2; i++) |
| { |
| pthread_barrier_init (&barrier, NULL, 2); |
| pthread_create (&child_thread[i], NULL, thread_function, NULL); |
| pthread_barrier_wait (&barrier); |
| pthread_barrier_destroy (&barrier); |
| } |
| |
| all_threads_started (); |
| |
| pthread_kill (child_thread[0], SIGUSR1); |
| pthread_kill (child_thread[1], SIGUSR2); |
| |
| all_threads_signalled (); |
| |
| for (i = 0; i < 2; i++) |
| pthread_join (child_thread[i], NULL); |
| |
| end (); |
| return 0; |
| } |