binutils-gdb/gdb/testsuite/gdb.base/watch_thread_num.c

65 lines
1.7 KiB
C

/* This testcase is part of GDB, the GNU debugger.
Copyright 2002-2013 Free Software Foundation, Inc.
Copyright 1992, 1993, 1994, 1995, 1999, 2002, 2003, 2007, 2008, 2009
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/>.
This file is copied from schedlock.c. */
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <pthread.h>
void *thread_function (void *arg); /* Pointer to function executed by each thread */
#define NUM 5
static unsigned int shared_var = 1;
int main () {
int res;
pthread_t threads[NUM];
void *thread_result;
long i;
for (i = 0; i < NUM; i++)
{
res = pthread_create (&threads[i],
NULL,
thread_function,
(void *) i);
}
thread_result = thread_function ((void *) i);
exit (EXIT_SUCCESS);
}
void *thread_function (void *arg) {
int my_number = (long) arg;
/* Don't run forever. Run just short of it :) */
while (shared_var > 0)
{
shared_var++;
usleep (1); /* Loop increment. */
}
pthread_exit (NULL);
}