void Object::CalculateSizeAndPointers() const
{
TADDR mt = GetMT();
MethodTableInfo* info = g_special_mtCache.Lookup((DWORD_PTR)mt);
if (!info->IsInitialized())
{
// this is the first time we see this method table, so we need to get the information
// from the target
FillMTData();
info->BaseSize = mMTData->BaseSize;
info->ComponentSize = mMTData->ComponentSize;
info->bContainsPointers = mMTData->bContainsPointers;
// The following request doesn't work on older runtimes. For those, the
// objects would just look like non-collectible, which is acceptable.
DacpMethodTableCollectibleData mtcd;
if (SUCCEEDED(mtcd.Request(g_sos, GetMT())))
{
info->bCollectible = mtcd.bCollectible;
info->LoaderAllocatorObjectHandle = TO_TADDR(mtcd.LoaderAllocatorObjectHandle);
}
}
if (mSize == (size_t)~0)
{
mSize = info->BaseSize;
if (info->ComponentSize)
{
// this is an array, so the size has to include the size of the components. We read the number
// of components from the target and multiply by the component size to get the size.
mSize += info->ComponentSize * GetNumComponents(GetAddress());
}
// On x64 we do an optimization to save 4 bytes in almost every string we create.
#ifdef _WIN64
// Pad to min object size if necessary
if (mSize < min_obj_size)
mSize = min_obj_size;
#endif // _WIN64
}
mPointers = info->bContainsPointers != FALSE;
}
void Attribute::Copy(Attribute* dst, Attribute* src, component_index bridge)
{
euint numComps0 = GetNumComponents(dst);
euint numComps1 = GetNumComponents(src);
euint numComps2 = bridge.num_comps;
euint numComps = numComps0;
if (numComps1 < numComps)
numComps = numComps1;
if (numComps2 < numComps)
numComps = numComps2;
switch (numComps)
{
case 1:
{
FloatAttr* ftDst = dst->DynamicCast<FloatAttr>();
FloatAttr* ftSrc = src->DynamicCast<FloatAttr>();
component comp = ComponentFormat(bridge.comps[0]);
if (comp < CompY)
ftDst->x = ftSrc->x;
}
break;
case 2:
{
Float2Attr* ft2Dst = dst->DynamicCast<Float2Attr>();
Float2Attr* ft2Src = src->DynamicCast<Float2Attr>();
component comp = ComponentFormat(bridge.comps[0]);
switch (comp)
{
case CompX:
ft2Dst->x = ft2Src->x;
break;
case CompY:
ft2Dst->x = ft2Src->y;
break;
default:
break;
}
comp = ComponentFormat(bridge.comps[1]);
switch (comp)
{
case CompX:
ft2Dst->y = ft2Src->x;
break;
case CompY:
ft2Dst->y = ft2Src->y;
break;
default:
break;
}
}
break;
case 3:
{
Float3Attr* ft3Dst = dst->DynamicCast<Float3Attr>();
Float3Attr* ft3Src = src->DynamicCast<Float3Attr>();
component comp = ComponentFormat(bridge.comps[0]);
switch (comp)
{
case CompX:
ft3Dst->x = ft3Src->x;
break;
case CompY:
ft3Dst->x = ft3Src->y;
break;
case CompZ:
ft3Dst->x = ft3Src->z;
break;
default:
break;
}
comp = ComponentFormat(bridge.comps[1]);
switch (comp)
{
case CompX:
ft3Dst->y = ft3Src->x;
break;
case CompY:
ft3Dst->y = ft3Src->y;
break;
case CompZ:
ft3Dst->y = ft3Src->z;
break;
default:
break;
}
comp = ComponentFormat(bridge.comps[2]);
switch (comp)
{
case CompX:
ft3Dst->z = ft3Src->x;
break;
case CompY:
ft3Dst->z = ft3Src->y;
break;
case CompZ:
ft3Dst->z = ft3Src->z;
break;
default:
break;
}
}
break;
case 4:
{
Float4Attr* ft4Dst = dst->DynamicCast<Float4Attr>();
Float4Attr* ft4Src = src->DynamicCast<Float4Attr>();
component comp = ComponentFormat(bridge.comps[0]);
switch (comp)
{
case CompX:
ft4Dst->x = ft4Src->x;
break;
case CompY:
ft4Dst->x = ft4Src->y;
break;
case CompZ:
ft4Dst->x = ft4Src->z;
break;
case CompW:
ft4Dst->x = ft4Src->w;
break;
}
comp = ComponentFormat(bridge.comps[1]);
switch (comp)
{
case CompX:
ft4Dst->y = ft4Src->x;
break;
case CompY:
ft4Dst->y = ft4Src->y;
break;
case CompZ:
ft4Dst->y = ft4Src->z;
break;
case CompW:
ft4Dst->y = ft4Src->w;
break;
}
comp = ComponentFormat(bridge.comps[2]);
switch (comp)
{
case CompX:
ft4Dst->z = ft4Src->x;
break;
case CompY:
ft4Dst->z = ft4Src->y;
break;
case CompZ:
ft4Dst->z = ft4Src->z;
break;
case CompW:
ft4Dst->z = ft4Src->w;
break;
}
comp = ComponentFormat(bridge.comps[3]);
switch (comp)
{
case CompX:
ft4Dst->w = ft4Src->x;
break;
case CompY:
ft4Dst->w = ft4Src->y;
break;
case CompZ:
ft4Dst->w = ft4Src->z;
break;
case CompW:
ft4Dst->w = ft4Src->w;
break;
}
}
break;
default:
break;
}
}
