size_t VMemoryManager_CRT::AlignedMemSize(void* ptr, int iAlignment)
{
// Not all memory size functions cope with NULL pointer
if(ptr == NULL)
return 0;
#if defined(WIN32) || defined (_VISION_XENON)
#if defined(VBASE_USE_CRT_DEBUG)
#if defined(_MSC_VER) && (_MSC_VER >= 1400)
return _aligned_msize_dbg(ptr, iAlignment, 0);
#else
return _msize_dbg(ptr, _NORMAL_BLOCK);//@@@@ VStudio < 2005 and code might be wrong
#endif
#else
#if defined(_MSC_VER) && (_MSC_VER >= 1400)
return _aligned_msize(ptr, iAlignment, 0);
#else
return _msize(ptr);//@@@@ VStudio < 2005 and code might be wrong
#endif
#endif
#elif defined (_VISION_PS3)
return malloc_usable_size(ptr);
#elif defined (_VISION_POSIX)
return 0; // TODO: IOS
#elif defined (_VISION_PSP2)
return malloc_usable_size(ptr);
#elif defined (_VISION_WIIU)
return 0; // XXCK
#else
#error Undefined platform!
#endif
}
extern "C" void* __cdecl _aligned_offset_recalloc_base(
void* block,
size_t count,
size_t size,
size_t align,
size_t offset
)
{
size_t user_size = 0; /* wanted size, passed to aligned realoc */
size_t start_fill = 0; /* location where aligned recalloc starts to fill with 0 */
/* filling must start from the end of the previous user block */
void * retptr = nullptr; /* result of aligned recalloc*/
/* ensure that (size * num) does not overflow */
if (count > 0)
{
_VALIDATE_RETURN_NOEXC((_HEAP_MAXREQ / count) >= size, ENOMEM, nullptr);
}
user_size = size * count;
if (block != nullptr)
{
start_fill = _aligned_msize(block, align, offset);
}
retptr = _aligned_offset_realloc_base(block, user_size, align, offset);
if (retptr != nullptr)
{
if (start_fill < user_size)
{
memset ((char*)retptr + start_fill, 0, user_size - start_fill);
}
}
return retptr;
}