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/*
Copyright 2013, 2014, Free Software Foundation, Inc.
This file is part of the GNU MP Library test suite.
The GNU MP Library test suite 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.
The GNU MP Library test suite 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
the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
#include "testutils.h"
/* Include it here, so we we could tweak, e.g., how MPZ_REALLOC
works. */
#include "../mini-gmp.c"
static size_t total_alloc = 0;
/* Custom memory allocation to track memory usage, and add a small red
zone.
About alignment: In general, getting a block from malloc, and
incrementing it by sizeof(size_t), like we do here, might give a
pointer which is not properly aligned for all types. But the
largest type we allocate space for is unsigned long (mp_limb_t),
which shouldn't have stricter alignment requirements than
size_t. */
static char block_end[8] =
{ 0x7c, 0x37, 0xd6, 0x12, 0xa8, 0x6c, 0x01, 0xd1 };
static void *
block_init (size_t *block, size_t size)
{
char *p;
*block++ = size;
p = (char *) block;
memcpy (p + size, block_end, sizeof(block_end));
total_alloc += size;
return p;
}
/* Check small redzone, return pointer to malloced block. */
static size_t *
block_check (char *p)
{
size_t *block = (size_t *) p - 1;
size_t size = block[0];
if (memcmp (p + size, block_end, sizeof(block_end)) != 0)
{
fprintf (stderr, "red zone overwritten.\n");
abort ();
}
total_alloc -= size;
return block;
}
static void *
tu_alloc (size_t size)
{
size_t *block = malloc (sizeof(size_t) + size + sizeof(block_end));
if (!block)
{
fprintf (stderr, "Virtual memory exhausted.\n");
abort ();
}
return block_init (block, size);
}
static void *
tu_realloc (void *p, size_t old_size, size_t new_size)
{
size_t *block = block_check (p);
block = realloc (block, sizeof(size_t) + new_size + sizeof(block_end));
if (!block)
{
fprintf (stderr, "Virtual memory exhausted.\n");
abort ();
}
return block_init (block, new_size);
}
static void
tu_free (void *p, size_t old_size)
{
free (block_check (p));
}
/* Free memory allocated via mini-gmp allocation function. */
void
testfree (void *p)
{
void (*freefunc) (void *, size_t);
mp_get_memory_functions (NULL, NULL, &freefunc);
freefunc (p, 0);
}
int
main (int argc, char **argv)
{
hex_random_init ();
mp_set_memory_functions (tu_alloc, tu_realloc, tu_free);
/* Currently, t-comb seems to be the only program accepting any
arguments. It might make sense to parse common arguments here. */
testmain (argc, argv);
if (total_alloc != 0)
{
fprintf (stderr, "Memory leaked: %lu bytes.\n",
(unsigned long) total_alloc);
abort ();
}
return 0;
}
void
testhalves (int count, void (*tested_fun) (int))
{
void (*freefunc) (void *, size_t);
void *(*reallocfunc) (void *, size_t, size_t);
void *(*allocfunc) (size_t);
size_t initial_alloc;
mp_get_memory_functions (&allocfunc, &reallocfunc, &freefunc);
initial_alloc = total_alloc;
(*tested_fun) (count / 2);
if (initial_alloc != total_alloc)
{
fprintf (stderr, "First half, memory leaked: %lu bytes.\n",
(unsigned long) total_alloc - initial_alloc);
abort ();
}
mp_set_memory_functions (NULL, NULL, NULL);
(*tested_fun) (count / 2);
mp_set_memory_functions (allocfunc, reallocfunc, freefunc);
}
void
dump (const char *label, const mpz_t x)
{
char *buf = mpz_get_str (NULL, 16, x);
fprintf (stderr, "%s: %s\n", label, buf);
testfree (buf);
}
void
mpz_set_str_or_abort (mpz_ptr z, const char *str, int base)
{
if (mpz_set_str (z, str, base) != 0)
{
fprintf (stderr, "ERROR: mpz_set_str failed\n");
fprintf (stderr, " str = \"%s\"\n", str);
fprintf (stderr, " base = %d\n", base);
abort();
}
}
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