73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2002-2018 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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This file is based on schedlock.c. */
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <pthread.h>
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int THREADS = 10;
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unsigned int *args;
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volatile int done = 0;
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void *
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thread_function (void *arg)
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{
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int my_number = (long) arg;
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volatile int *myp = (volatile int *) &args[my_number];
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/* Don't run forever. Run just short of it :) */
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while (*myp > 0 && !done)
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{
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(*myp)++; /* set breakpoint here */
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}
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if (done)
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usleep (100); /* Some time to make sure we don't mask any bad
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SIGTRAP handling. */
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pthread_exit (NULL);
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}
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int
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main (int argc, char **argv)
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{
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int res;
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pthread_t *threads;
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void *thread_result;
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long i = 0;
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threads = malloc (THREADS * sizeof (pthread_t));
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args = malloc (THREADS * sizeof (unsigned int));
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for (i = 0; i < THREADS; i++)
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{
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args[i] = 1; /* Init value. */
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res = pthread_create (&threads[i],
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NULL,
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thread_function,
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(void *) i);
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}
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for (i = 0; i < THREADS; i++)
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pthread_join (threads[i], &thread_result);
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exit(EXIT_SUCCESS);
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}
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