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/* This testcase is part of GDB, the GNU debugger.

   Copyright 2002, 2003, 2004, 2007, 2008, 2009, 2010

   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); /* Function executed by each thread.  */

#define NUM 5

unsigned int args[NUM+1];

int

main ()

{

    int res;

    pthread_t threads[NUM];

    void *thread_result;

    long i;

    /* To keep the test determinative, initialize args first,

       then start all the threads.  Otherwise, the way watchthreads.exp

       is written, we have to worry about things like threads[0] getting

       to 29 hits of args[0] before args[1] gets changed.  */

    for (i = 0; i < NUM; i++)

      {

        /* The call to usleep is so that when the watchpoint triggers,

           the pc is still on the same line.  */

        args[i] = 1; usleep (1); /* Init value.  */

      }

    for (i = 0; i < NUM; i++)

      {

        res = pthread_create (&threads[i],

                              NULL,

                              thread_function,

                              (void *) i);

      }

    args[i] = 1;

    thread_function ((void *) i);

    exit (EXIT_SUCCESS);

}

void *

thread_function (void *arg)

{

    int my_number =  (long) arg;

    int *myp = (int *) &args[my_number];

    /* Don't run forever.  Run just short of it :)  */

    while (*myp > 0)

      {

        (*myp) ++; usleep (1);  /* Loop increment.  */

      }

    pthread_exit (NULL);

}