source: vendor/glibc-tests/glibc/linuxthreads/tst-stack1.c

/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

/* Test pthread_create/pthread_join with user defined stacks.  */

#include <limits.h>
#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

static int seen;

static void *
tf (void *p)
{
  ++seen;
  return NULL;
}

#define N 16

static int
do_test (void)
{
  void *stack;
  int res = posix_memalign (&stack, getpagesize (), N * 4 * PTHREAD_STACK_MIN);
  if (res)
    {
      printf ("malloc failed %s\n", strerror (res));
      return 1;
    }

  pthread_attr_t attr;
  pthread_attr_init (&attr);

  int result = 0;
  for (int i = 0; i < N; ++i)
    {
      res = pthread_attr_setstack (&attr, stack + i * 4 * PTHREAD_STACK_MIN,
                                   4 * PTHREAD_STACK_MIN);
      if (res)
        {
          printf ("pthread_attr_setstack failed %d\n", res);
          result = 1;
          continue;
        }

      /* Create the thread.  */
      pthread_t th;
      res = pthread_create (&th, &attr, tf, NULL);
      if (res)
        {
          printf ("pthread_create failed %d\n", res);
          result = 1;
        }
      else
        {
          res = pthread_join (th, NULL);
          if (res)
            {
              printf ("pthread_join failed %d\n", res);
              result = 1;
            }
        }
    }

  pthread_attr_destroy (&attr);

  if (seen != N)
    {
      printf ("seen %d != %d\n", seen, N);
      result = 1;
    }

  return result;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"