| /* 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 <pthread.h> |
| #include <assert.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| |
| pthread_barrier_t barrier; |
| |
| volatile int second_child; |
| |
| void |
| breakpoint_function (void) |
| { |
| /* GDB sets a breakpoint in this function. */ |
| } |
| |
| void * |
| child_function_0 (void *arg) |
| { |
| volatile unsigned int counter = 1; |
| |
| pthread_barrier_wait (&barrier); |
| |
| while (counter > 0) |
| { |
| counter++; |
| usleep (1); |
| |
| if (second_child) |
| continue; |
| |
| breakpoint_function (); |
| } |
| |
| pthread_exit (NULL); |
| } |
| |
| void * |
| child_function_1 (void *arg) |
| { |
| volatile unsigned int counter = 1; |
| |
| pthread_barrier_wait (&barrier); |
| |
| while (counter > 0) |
| { |
| counter++; |
| usleep (1); |
| |
| if (!second_child) |
| continue; |
| |
| breakpoint_function (); |
| } |
| |
| pthread_exit (NULL); |
| } |
| |
| static int |
| wait_threads (void) |
| { |
| return 1; /* in wait_threads */ |
| } |
| |
| int |
| main (void) |
| { |
| pthread_t child_thread[2]; |
| int res; |
| |
| pthread_barrier_init (&barrier, NULL, 3); |
| |
| res = pthread_create (&child_thread[0], NULL, child_function_0, NULL); |
| assert (res == 0); |
| res = pthread_create (&child_thread[1], NULL, child_function_1, NULL); |
| assert (res == 0); |
| |
| pthread_barrier_wait (&barrier); |
| wait_threads (); /* set wait-thread breakpoint here */ |
| |
| pthread_join (child_thread[0], NULL); |
| pthread_join (child_thread[1], NULL); |
| |
| exit (EXIT_SUCCESS); |
| } |