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69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2014-2020 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <unistd.h>
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#include <stdlib.h>
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pthread_barrier_t barrier;
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pthread_t child_thread;
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volatile unsigned int counter = 1;
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void *
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child_function (void *arg)
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{
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pthread_barrier_wait (&barrier);
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while (counter > 0)
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{
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counter++;
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asm (" nop"); /* set breakpoint child here */
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asm (" nop"); /* set breakpoint after step-over here */
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usleep (1);
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}
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pthread_exit (NULL);
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}
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int
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main ()
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{
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int res;
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long i;
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alarm (300);
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pthread_barrier_init (&barrier, NULL, 2);
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res = pthread_create (&child_thread, NULL, child_function, NULL);
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pthread_barrier_wait (&barrier);
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/* Use an infinite loop with no function calls so that "step" over
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this line never finishes before the breakpoint in the other
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thread triggers. That can happen if the step-over of thread 2 is
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done with displaced stepping on a target that is always in
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non-stop mode, as in that case GDB runs both threads
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simultaneously. */
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while (1); /* set wait-thread breakpoint here */
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pthread_join (child_thread, NULL);
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exit (EXIT_SUCCESS);
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}
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