Part 4: the implementation

The object memory

most objects: 1 word header base header ... fixed and/or indexed fields ... ... type (2)=0 size (6) format (4) ccIndex (5) hash (12) dirty/root/mark (3) ccIndex := #(CompiledMethod Symol Array LargePositiveInteger MethodDictionary Association Point Rectnagle Class Organizer Bockl Context MethodContext ... 20 spare ...) non-compact objects: 2 word header size header base header ... class oop (30) + type(2)= 01                               type    = 01 large and/or non-compact objects: 3 word header size header class header base header ... size (30) + type (2)            = 11 class oop (30) + type (2) = 11 type                                     = 11