Electrical computers and digital processing systems: multicomput – Computer-to-computer data routing – Least weight routing
Patent
1997-04-04
1999-11-16
Vu, Viet D.
Electrical computers and digital processing systems: multicomput
Computer-to-computer data routing
Least weight routing
709300, G06F 1300
Patent
active
059875291
ABSTRACT:
Message sending can be performed quickly making efficient use of memory space. A class object C is obtained (110) from a specified receiver object. The class object C contains an instance variable pointing to a dispatch table for the class to obtain (120) a dispatch table D. From the code which is an argument of a vmicall instruction, a method M of the address stored in the entry of the code in the dispatch table is retrieved (130). The card which is the other argument of the vmicall instruction is compared (140) with the card number stored in the method M retrieved in step 130. If the card and the card number are not identical, the selector mismatch handler is invoked to locate the correct method to be invoked (150). Then, the method M is invoked (160). In the selector mismatch handler, it is determined whether the dispatch table D for the class C is the default one, and if it is the default dispatch table, the dispatch table for the class C is allocated. Then, the method corresponding to the class C and the card which is the argument of the selector mismatch handler is located, a new code is assigned to the selector of that method, and the address of the method M is stored in the entry of the newcode in the previously prepared dispatch table D. Finally, the method M is returned.
REFERENCES:
patent: 5379426 (1995-01-01), Foss et al.
patent: 5535391 (1996-07-01), Hejlsberg et al.
patent: 5581760 (1996-12-01), Atkinson et al.
patent: 5590334 (1996-12-01), Saulpaugh et al.
patent: 5701485 (1997-12-01), Guillen et al.
Nakamura Hiroaki
Onodera Tamiya
International Business Machines - Corporation
Sbrollini J. P.
Vu Viet D.
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