bfbdfe4eab
Since test uses 160 multiple for malloc size, we should also use 160 multiple for total variable instead of 16, then comparison is meaningful. So fix it. Also change the ">" to ">=" so that the test is technically valid. Reviewed-by: DJ Delorie <dj@redhat.com>
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/* Smoke test for mallinfo2
|
|
Copyright (C) 2020-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* Test that mallinfo2 is properly exported and basically works. */
|
|
|
|
#include <array_length.h>
|
|
#include <malloc.h>
|
|
#include <stdlib.h>
|
|
#include <support/check.h>
|
|
|
|
/* This is not specifically needed for the test, but (1) does
|
|
something to the data so gcc doesn't optimize it away, and (2) may
|
|
help when developing future tests. */
|
|
static void
|
|
print_mi (const char *msg, struct mallinfo2 *m)
|
|
{
|
|
printf("\n%s...\n", msg);
|
|
#define P(f) printf("%s: %zu\n", #f, m->f)
|
|
P(arena);
|
|
P(ordblks);
|
|
P(smblks);
|
|
P(hblks);
|
|
P(hblkhd);
|
|
P(usmblks);
|
|
P(fsmblks);
|
|
P(uordblks);
|
|
P(fordblks);
|
|
P(keepcost);
|
|
}
|
|
|
|
/* We do this to force the call to malloc to not be optimized
|
|
away. */
|
|
volatile void *ptr;
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
struct mallinfo2 mi1, mi2;
|
|
int i;
|
|
size_t total = 0;
|
|
|
|
/* This is the key difference between mallinfo() and mallinfo2().
|
|
It may be a false positive if int and size_t are the same
|
|
size. */
|
|
TEST_COMPARE (sizeof (mi1.arena), sizeof (size_t));
|
|
|
|
mi1 = mallinfo2 ();
|
|
print_mi ("before", &mi1);
|
|
|
|
/* Allocations that are meaningful-sized but not so large as to be
|
|
mmapped, so that they're all accounted for in the field we test
|
|
below. */
|
|
for (i = 1; i < 20; ++i)
|
|
{
|
|
ptr = malloc (160 * i);
|
|
total += 160 * i;
|
|
}
|
|
|
|
mi2 = mallinfo2 ();
|
|
print_mi ("after", &mi2);
|
|
|
|
/* Check at least something changed. */
|
|
TEST_VERIFY (mi2.uordblks >= mi1.uordblks + total);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|