| /* This testcase is part of GDB, the GNU debugger. |
| |
| Copyright 2014-2022 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 <unistd.h> |
| #include <stdlib.h> |
| |
| pthread_barrier_t barrier; |
| pthread_t child_thread; |
| |
| volatile unsigned int counter = 1; |
| |
| void * |
| child_function (void *arg) |
| { |
| pthread_barrier_wait (&barrier); |
| |
| while (counter > 0) |
| { |
| counter++; |
| |
| asm (" nop"); /* set breakpoint child here */ |
| asm (" nop"); /* set breakpoint after step-over here */ |
| usleep (1); |
| } |
| |
| pthread_exit (NULL); |
| } |
| |
| int |
| main () |
| { |
| int res; |
| long i; |
| |
| alarm (300); |
| |
| pthread_barrier_init (&barrier, NULL, 2); |
| |
| res = pthread_create (&child_thread, NULL, child_function, NULL); |
| pthread_barrier_wait (&barrier); |
| |
| /* Use an infinite loop with no function calls so that "step" over |
| this line never finishes before the breakpoint in the other |
| thread triggers. That can happen if the step-over of thread 2 is |
| done with displaced stepping on a target that is always in |
| non-stop mode, as in that case GDB runs both threads |
| simultaneously. */ |
| while (1); /* set wait-thread breakpoint here */ |
| |
| pthread_join (child_thread, NULL); |
| |
| exit (EXIT_SUCCESS); |
| } |