Efficient computer based virtual machine object structure

Details Efficient computer based virtual machine object structure Efficient computer based virtual machine object structure

1997-02-25

1999-07-06

Peeso, Thomas R.

G06F 906

Patent

active

059207205

ABSTRACT:
Method and apparatus for implementing a virtual machine interpreter such as an interpreter for interpreting Java compiled bytecodes. The Java language supports class structures and a hierarchy of such structures. As the Java software virtual machine loads the class file containing the Java bytecodes it allocates a first block, of memory based on the class definition for all dynamic methods implemented by a class hierarchy that includes a base class and any additional classes derived from the base class. The virtual machine instantiates instances of classes within a class hierarchy derived from the base class in other memory blocks by initializing a method table pointer at a base location in that other memory block for each such instance in the class hierarchy. The method table pointer is initialized to point to the first block of memory defining the dynamic methods for the class hierarchy. The interpreter also initializes other data unique to each instance at offsets relative to the method table pointer within the other memory block for said class instance. Practice of the invention enhances the speed with which the virtual machine accesses dynamic methods of objects within the class hierarchy.

REFERENCES:
patent: 5297284 (1994-03-01), Jones et al.
patent: 5327562 (1994-07-01), Adcock
patent: 5361350 (1994-11-01), Conner et al.
patent: 5404525 (1995-04-01), Endicott et al.
patent: 5410705 (1995-04-01), Jones et al.
patent: 5644771 (1997-07-01), Endicott et al.
patent: 5740441 (1998-04-01), Yellin et al.
Arnold, K., et al., The Java.TM. Programming Language, Addison-Wesley Publishing Company, Inc., pp. i-xiii (1996).
Lindholm, T., et al., The Java.TM. Virtual Machine Specification, Addison-Wesley, pp. i-xi, 1-82 (1997).

Affiliated with

Also associated with

Rating

Efficient computer based virtual machine object structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Efficient computer based virtual machine object structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Efficient computer based virtual machine object structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-906362