Jeroen (Speedzor)

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CC#

•Created by Jeroen (Speedzor) on 10/29/2023 in #help

❔ Benchmarking object size difference

Circling back here: I've written up my findings at https://vannevel.net/posts/exploring-object-layouts. The missing link was the Object Header and the Method Table -- both are 8 bytes each and make up the diff with the expected 80 bytes that we were seeing.

84 replies

CC#

•Created by Jeroen (Speedzor) on 10/29/2023 in #help

❔ Benchmarking object size difference

Thanks both, it's been really interesting! Will play around with windbg a bit more; I appreciate your input

84 replies

CC#

•Created by Jeroen (Speedzor) on 10/29/2023 in #help

❔ Benchmarking object size difference

I was with you until you changed the padding to 10 and 12 respectively. Why isn't it 2 and 4 to reach the 48-byte mark?

84 replies

CC#

•Created by Jeroen (Speedzor) on 10/29/2023 in #help

❔ Benchmarking object size difference

int32 is 4 bytes, I think default packing is 8 bytes. It looks like the two booleans (offsets 44 and 45) are placed right after the int32 (offset 40). Is the conclusion that int32 + bool + bool + 2byte padding is the same as int32 + 4 byte padding?

84 replies

CC#

•Created by Jeroen (Speedzor) on 10/29/2023 in #help

❔ Benchmarking object size difference

Do you know of any way to confirm that? I was hoping there would be some sort of tool that allows me to tell what an object's structure looks like but I haven't come across something like that yet

84 replies