Given an object address on the heap, can I get the size of its header?

[ashmind]

Looking at https://blogs.msdn.microsoft.com/seteplia/2017/05/26/managed-object-internals-part-1-layout, it seems that object address on the heap points to method table, preceded by 4 or 8 byte header.

What API should I use to get this size? Currently I use IntPtr.Size, but this feels unstable in case some new implementation of CLR uses a different header format.

[leculver]

Sorry I didn't respond to this sooner.

@ashmind The size of an object header is always the same as the pointer size in every runtime we've ever shipped. I suppose a case could be made that we should expose the object header size as a property off of ClrRuntime, but in reality there's very, very low chances that this will ever be changed.