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/* Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Wolfram Gloger <wg@malloc.de>, 2004.
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. */
#include <errno.h>
#include <stdio.h>
#include "malloc.h"
static int errors = 0;
static void
merror (const char *msg)
{
++errors;
printf ("Error: %s\n", msg);
}
int
main (void)
{
void *p1, *p2;
long i;
mstate a;
struct malloc_arena_info mai;
int nfree;
unsigned long navail;
errno = 0;
malloc_stats(); /* check that it works even without initialization */
a = _int_get_arena(0);
if (!a) {
merror ("Can't get main arena.");
return 1;
}
free (malloc (10));
_int_get_arena_info(a, &mai);
printf("nfree = %d\navail = %lu\nfastavail = %lu\ntop_size = %lu\n",
mai.nbinblocks + mai.nfastblocks,
(unsigned long)mai.binavail,
(unsigned long)mai.fastavail,
(unsigned long)mai.top_size);
if (mai.nfastblocks+mai.nbinblocks < 1)
merror ("initial _int_get_arena_info() failed.");
nfree = mai.nbinblocks + mai.nfastblocks;
navail = mai.binavail + mai.fastavail;
p1 = malloc (10);
if (p1 == NULL)
merror ("malloc (10) failed.");
p2 = malloc (30);
if (p2 == NULL)
merror ("malloc (30) failed.");
free (malloc (10));
for (i=0; i<100; ++i)
{
p1 = realloc (p1, i*7 + 3);
if (p1 == NULL)
merror ("realloc (i*7 + 3) failed.");
}
free (p2);
_int_get_arena_info(a, &mai);
printf("nfree = %d\navail = %lu\nfastavail = %lu\ntop_size = %lu\n",
mai.nbinblocks + mai.nfastblocks,
(unsigned long)mai.binavail,
(unsigned long)mai.fastavail,
(unsigned long)mai.top_size);
/* Assume that no memory is returned to the system from these small
chunks. */
if (mai.nbinblocks+mai.nfastblocks < nfree ||
mai.binavail+mai.fastavail < navail)
merror ("final _int_get_arena_info() failed.");
malloc_stats();
return errors != 0;
}
/*
* Local variables:
* c-basic-offset: 2
* End:
*/
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