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102 lines
2.0 KiB
C
102 lines
2.0 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 <assert.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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volatile int second_child;
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void
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breakpoint_function (void)
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{
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/* GDB sets a breakpoint in this function. */
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}
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void *
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child_function_0 (void *arg)
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{
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volatile unsigned int counter = 1;
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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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usleep (1);
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if (second_child)
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continue;
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breakpoint_function ();
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}
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pthread_exit (NULL);
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}
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void *
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child_function_1 (void *arg)
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{
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volatile unsigned int counter = 1;
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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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usleep (1);
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if (!second_child)
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continue;
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breakpoint_function ();
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}
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pthread_exit (NULL);
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}
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static int
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wait_threads (void)
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{
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return 1; /* in wait_threads */
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}
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int
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main (void)
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{
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pthread_t child_thread[2];
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int res;
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pthread_barrier_init (&barrier, NULL, 3);
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res = pthread_create (&child_thread[0], NULL, child_function_0, NULL);
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assert (res == 0);
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res = pthread_create (&child_thread[1], NULL, child_function_1, NULL);
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assert (res == 0);
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pthread_barrier_wait (&barrier);
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wait_threads (); /* set wait-thread breakpoint here */
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pthread_join (child_thread[0], NULL);
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pthread_join (child_thread[1], NULL);
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exit (EXIT_SUCCESS);
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}
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