Quickly compute the maximum size for a given size class.

no forwarding here due to aliasing/name mangling issues

Return the maximum size for a given size class.

Clear the list.

Clear deletes everything in the array.

Clear the dictionary.

Combine the first object with the second.

Copy the current object to a new chunk. sz = the minimum amount of extra space we need.

Copy the current object to a new chunk. sz = the minimum amount of extra space we need.

Builds an array to speed size computations, stored in sizes.

Delete one reference count.