#include <stdio.h>
#include <stdlib.h>
#include "gmp-impl.h"
void * (*__gmp_allocate_func) (size_t) = __gmp_default_allocate;
void * (*__gmp_reallocate_func) (void *, size_t, size_t) = __gmp_default_reallocate;
void (*__gmp_free_func) (void *, size_t) = __gmp_default_free;
void *
__gmp_default_allocate (size_t size)
{
void *ret;
#ifdef DEBUG
size_t req_size = size;
size += 2 * GMP_LIMB_BYTES;
#endif
ret = malloc (size);
if (ret == 0)
{
fprintf (stderr, "GNU MP: Cannot allocate memory (size=%lu)\n", (long) size);
abort ();
}
#ifdef DEBUG
{
mp_ptr p = ret;
p++;
p[-1] = (0xdeadbeef << 31) + 0xdeafdeed;
if (req_size % GMP_LIMB_BYTES == 0)
p[req_size / GMP_LIMB_BYTES] = ~((0xdeadbeef << 31) + 0xdeafdeed);
ret = p;
}
#endif
return ret;
}
void *
__gmp_default_reallocate (void *oldptr, size_t old_size, size_t new_size)
{
void *ret;
#ifdef DEBUG
size_t req_size = new_size;
if (old_size != 0)
{
mp_ptr p = oldptr;
if (p[-1] != (0xdeadbeef << 31) + 0xdeafdeed)
{
fprintf (stderr, "gmp: (realloc) data clobbered before allocation block\n");
abort ();
}
if (old_size % GMP_LIMB_BYTES == 0)
if (p[old_size / GMP_LIMB_BYTES] != ~((0xdeadbeef << 31) + 0xdeafdeed))
{
fprintf (stderr, "gmp: (realloc) data clobbered after allocation block\n");
abort ();
}
oldptr = p - 1;
}
new_size += 2 * GMP_LIMB_BYTES;
#endif
ret = realloc (oldptr, new_size);
if (ret == 0)
{
fprintf (stderr, "GNU MP: Cannot reallocate memory (old_size=%lu new_size=%lu)\n", (long) old_size, (long) new_size);
abort ();
}
#ifdef DEBUG
{
mp_ptr p = ret;
p++;
p[-1] = (0xdeadbeef << 31) + 0xdeafdeed;
if (req_size % GMP_LIMB_BYTES == 0)
p[req_size / GMP_LIMB_BYTES] = ~((0xdeadbeef << 31) + 0xdeafdeed);
ret = p;
}
#endif
return ret;
}
void
__gmp_default_free (void *blk_ptr, size_t blk_size)
{
#ifdef DEBUG
{
mp_ptr p = blk_ptr;
if (blk_size != 0)
{
if (p[-1] != (0xdeadbeef << 31) + 0xdeafdeed)
{
fprintf (stderr, "gmp: (free) data clobbered before allocation block\n");
abort ();
}
if (blk_size % GMP_LIMB_BYTES == 0)
if (p[blk_size / GMP_LIMB_BYTES] != ~((0xdeadbeef << 31) + 0xdeafdeed))
{
fprintf (stderr, "gmp: (free) data clobbered after allocation block\n");
abort ();
}
}
blk_ptr = p - 1;
}
#endif
free (blk_ptr);
}