System and method for space efficient hashcode allocation
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United States of America Patent
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May 15, 2001
Grant Date -
N/A
app pub date -
Apr 30, 1996
filing date -
Apr 30, 1996
priority date (Note) -
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Abstract
In summary, the present invention is a multithreaded computer system having a memory that stores a plurality of objects and a plurality of procedures. The system uses a first global hashing procedure to service requests for the hashcodes of objects that do not have hashcodes, a local object-specific hashing procedure to service requests for hashcodes that have a recently generated hashcode, and a second global hashing procedure to service requests for the hashcodes of objects that have their hashcodes stored with the object. The global object hashing procedure has instructions for creating for each object a local object-specific hashing procedure. The local object hashing procedure includes as private data a hashcode and instructions for retrieving the hashcode. The second global hashing procedure includes instructions for retrieving the hashcode from the object. A hashcode cleanup procedure, executed during the system's garbage collection process, releases the local object-specific hashing procedure of an object and stores the hashcode with the object.
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