extern "C" void * MYCDECL CUSTOM_REALLOC (void * ptr, size_t sz)
{
if (ptr == NULL) {
ptr = internalMalloc (sz);
return ptr;
}
if (sz == 0) {
CUSTOM_FREE (ptr);
return NULL;
}
size_t objSize = CUSTOM_GETSIZE (ptr);
void * buf = internalMalloc(sz);
if (buf != NULL) {
if (objSize == CUSTOM_GETSIZE(buf)) {
// The objects are the same actual size.
// Free the new object and return the original.
CUSTOM_FREE (buf);
return ptr;
}
// Copy the contents of the original object
// up to the size of the new block.
size_t minSize = (objSize < sz) ? objSize : sz;
memcpy (buf, ptr, minSize);
}
// Free the old block.
CUSTOM_FREE (ptr);
// Return a pointer to the new one.
return buf;
}
extern "C" void * MYCDECL CUSTOM_REALLOC (void * ptr, size_t sz)
{
if (ptr == NULL) {
ptr = __malloc_impl(sz);
return ptr;
}
if (sz == 0) {
__free_impl(ptr);
return NULL;
}
size_t objSize = CUSTOM_GETSIZE (ptr);
void * buf = __malloc_impl((size_t) (sz));
if (buf != NULL) {
// Copy the contents of the original object
// up to the size of the new block.
size_t minSize = (objSize < sz) ? objSize : sz;
memcpy (buf, ptr, minSize);
}
// Free the old block.
__free_impl(ptr);
// Return a pointer to the new one.
return buf;
}
size_t mysize (malloc_zone_t * zone, const void * ptr) {
size_t sz;
if (zone == theZone) {
sz = CUSTOM_GETSIZE(ptr);
} else {
sz = originalSize (zone, ptr);
}
return sz;
}