/* This testcase is part of GDB, the GNU debugger. Copyright 2002-2013 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 . This file is based on schedlock.c. */ #include #include #include #include int THREADS = 10; unsigned int *args; volatile int done = 0; void * thread_function (void *arg) { int my_number = (long) arg; volatile int *myp = (volatile int *) &args[my_number]; /* Don't run forever. Run just short of it :) */ while (*myp > 0 && !done) { (*myp)++; /* set breakpoint here */ } if (done) usleep (100); /* Some time to make sure we don't mask any bad SIGTRAP handling. */ pthread_exit (NULL); } int main (int argc, char **argv) { int res; pthread_t *threads; void *thread_result; long i = 0; threads = malloc (THREADS * sizeof (pthread_t)); args = malloc (THREADS * sizeof (unsigned int)); for (i = 0; i < THREADS; i++) { args[i] = 1; /* Init value. */ res = pthread_create (&threads[i], NULL, thread_function, (void *) i); } for (i = 0; i < THREADS; i++) pthread_join (threads[i], &thread_result); exit(EXIT_SUCCESS); }