Object model for Java.TM.

Details Object model for Java.TM. Object model for Java.TM.

1999-02-26

2000-12-19

Chaki, Kakali

Data processing: software development, installation, and managem

Software program development tool

Translation of code

717 2, 717 7, G06F 945

Patent

active

061638803

ABSTRACT:
The mechanism includes three data structures: object data associated with each object O1, O2, O3 ... of a program, a class descriptor associated with the classes to which the objects O1, O2, O3 ... belong, and interface references. For each class C.sub.i, the class descriptor corresponding to the class C.sub.i includes: i) a class method table comprising one or more entries, wherein each entry identifies an implementation of a method inherited or defined by the class C.sub.i ; and ii) for each interface implemented by the class C.sub.i, an interface method table comprising one or more entries, wherein each entry identifies an implementation of a method declared by the particular interface or an implementation of a method declared by an interface extended by the particular interface. An interface reference for an interface declaration ID associated with a given object OI, wherein the object OI implements methods that are declared by an interface declaration ID includes a pointer to the interface method table corresponding to the interface declaration ID within the class descriptor corresponding to the object OI. An efficient mechanism for method invocations is provided by generating an index that identifies the entry corresponding to the appropriate method in the interface method table pointed to by the pointer of the interface reference, reading the data stored by the entry identified by the index, and controlling the computer processing apparatus to jump to the address identified by the data.

REFERENCES:
patent: 5265206 (1993-11-01), Shackelford et al.
patent: 5361350 (1994-11-01), Conner et al.
patent: 5367685 (1994-11-01), Gosling
patent: 5404525 (1995-04-01), Endicott et al.
patent: 5481708 (1996-01-01), Kukol
patent: 5493680 (1996-02-01), Danforth
patent: 5692183 (1997-11-01), Hapner et al.
patent: 5748964 (1998-05-01), Goslings
patent: 5758160 (1998-05-01), McInerney et al.
patent: 5911074 (1999-06-01), Leprince et al.
patent: 5918052 (1999-06-01), Krusal et al.
patent: 5953527 (1999-09-01), Cable
"An Object Addressing Mechanism for Statically Typed Languages with Multiple Inheritance", R.C.H. Connor et al., OOPSLA '89 Proceedings, pp. 279-285.
"A Fast Method Dispatcher for Compiled Languages with Multiple Inheritance", R. Dixon et al., OOPSLA '89 Proceedings, pp. 211-214.
"Message Dispatch on Pipelined Processors", K. Driesen et al., ECOOP '95 Proceedings, pp. 252-282.
"Minimizing Row Displacement Dispatch Tables", K. Kriesen et al., OOPSLA '95 Austin, Texas, pp. 141-155.
"Optimizing Dynamically-Typed Object-Oriented Languages with Polymorphic Inline Caches", U. Holzle et al., ECOOP '91 Proceedings, pp. 20-38.
"Bidirectional Object Layout for Separate Compilation", A. Meyers et al., OOPSLA '95, Austin Texas, pp. 124-139.
"Two-directional Record Layout for Multiple Inheritance", W. Pugh et al., Proc. of the ACM SIGPLAN '90 Conference, Jun. 1990, pp. 85-91.
"Fast Dispatch Mechanisms for Stock Hardware", J. Rose et al., OOPSLA '88 Conf. Proc., pp. 27-35.
"Compiling Java, Embedded System Programming", J. Steinhorn, vol. 11, No. 10, Sep. 1998, 42-56.
"The Java Factor", Singhal & Nguyen, Comm. of the ACM, vol. 41, No. 6, Jun. 1998, pp. 35-37.
Boher et al, Distributed object applications, Comm. of the ACM, vol. 41, No. 6, pp. 43-48, Jun. 1998.
Chabert et al, "Java object shariing in Habanero", Comm. of the ACM vol. 41, No. 6, pp. 69-76, Jun. 1998.
Alpern et al, "Implementing Jalapeno in Java", ACM OOPSLA, pp. 314-324, Jul. 1999.
Kreutzer et al, SimJava a framework fro modeling queing networks in Java, Proc. winter simulation, pp. 483-488, 1997.
Miller et al, "Component based simulation environments JSIM as a case study using Java beans", Proc. of winter simulation, pp. 373-381, Jun. 1998.
Chabert et al, "Java object sharing in Haanero", Comm of the ACM, vol. 41, No. 6, pp. 69-76, Jun. 1998.
Bober et al, "Distributed object applications", comm of the ACM, vol. 41, No. 6, pp. 43-48, Jun. 1998.

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