Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2007-01-23
2007-01-23
Hwang, Joon Hwan (Department: 2166)
Data processing: database and file management or data structures
Database design
Data structure types
Reexamination Certificate
active
10339338
ABSTRACT:
There are provided a heap memory management method that not only improves processing performance of an application program but also reduces a program development cost and a computer system using the same method. A live object copy process in minor collection of generational garbage collection is implemented through a calculate process of object live ratio, a compare process of object live ratio, and a live object copy process. The calculate process of object live ratio calculates a ratio of a size of a memory allocated to live objects of new objects to a size of a memory allocated to a new object during minor collection. The compare process of object live ratio compares a calculated object live ratio with a predetermined threshold. The live object copy process copies a live object directly to an old-generation heap instead of a new-generation heap when the object live ratio exceeds the threshold as a result of comparison. Further, an application programmer provides means for setting the threshold that decides a copy destination of the live object as a runtime parameter of a program and means for holding the set threshold in a memory.
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Richard Jones and Rafael Lins, “Generational Garbage Collection”, Garbage Collection: Algorithms for Automatic Dynamic Memory Management, 1996, John Wiley & Sons, pp. 143-181.
Kawamoto Shinichi
Yasuda Yoshiko
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Hwang Joon Hwan
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