org.jruby.runtime
Interfaces 
Constants
ErrorLogger
IAccessor
ICallable
IGlobalVariables
IRaiseListener
Classes 
Arity
Block
BlockStack
CallbackFactory
CallType
DynamicVariableSet
Frame
FrameStack
GlobalVariable
Iter
LastCallStatus
ObjectSpace
ReadonlyGlobalVariable
RubyExceptions
RubyOptions
Scope
ScopeStack
ThreadContext
Visibility