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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [gdb/] [testsuite/] [gdb.threads/] [multi-create.c] - Blame information for rev 330

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1 330 jeremybenn
/* Create threads from multiple threads in parallel.
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   Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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   This file is part of GDB.
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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 <stdio.h>
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#include <limits.h>
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#define NUM_CREATE 1
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#define NUM_THREAD 8
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void *
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thread_function (void *arg)
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{
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  int x = * (int *) arg;
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  printf ("Thread <%d> executing\n", x);
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  return NULL;
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}
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void *
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create_function (void *arg)
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{
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  pthread_attr_t attr;
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  pthread_t threads[NUM_THREAD];
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  int args[NUM_THREAD];
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  int i = * (int *) arg;
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  int j;
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  pthread_attr_init (&attr); /* set breakpoint 1 here.  */
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  pthread_attr_setstacksize (&attr, 2*PTHREAD_STACK_MIN);
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  /* Create a ton of quick-executing threads, then wait for them to
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     complete.  */
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  for (j = 0; j < NUM_THREAD; ++j)
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    {
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      args[j] = i * 1000 + j;
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      pthread_create (&threads[j], &attr, thread_function, &args[j]);
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    }
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  for (j = 0; j < NUM_THREAD; ++j)
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    pthread_join (threads[j], NULL);
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  pthread_attr_destroy (&attr);
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  return 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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  pthread_attr_t attr;
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  pthread_t threads[NUM_CREATE];
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  int args[NUM_CREATE];
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  int n, i;
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  pthread_attr_init (&attr);
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  pthread_attr_setstacksize (&attr, 2*PTHREAD_STACK_MIN);
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  for (n = 0; n < 100; ++n)
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    {
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      for (i = 0; i < NUM_CREATE; i++)
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        {
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          args[i] = i;
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          pthread_create (&threads[i], &attr, create_function, &args[i]);
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        }
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      create_function (&i);
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      for (i = 0; i < NUM_CREATE; i++)
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        pthread_join (threads[i], NULL);
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    }
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  pthread_attr_destroy (&attr);
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  return 0;
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}

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