Boots – shoes – and leggings
Patent
1989-08-22
1993-02-23
Clark, David L.
Boots, shoes, and leggings
395425, 395700, 395725, 364DIG1, 3642563, 3642817, 3642818, 364286, G06F 940, G06F 946
Patent
active
051897334
ABSTRACT:
A computer system for executing application programs with limited available main memory capacity includes a main memory management system. The architecture of the stub vectors of a swappable code object and the protocol for referencing the stubs in active call frames reduces the overhead time of code object swapping. The stub vectors for a swappable code object are clustered together in memory; and each cluster comprises at least one entry stub and a return stub. A return stub vector is referenced in an active call frame only when its associated code object is not resident in main memory or when the code object has been placed on probation in contemplation of moving the object out of main memory. A linked list of resident code objects is employed in the selection of objects to be removed from main memory. A number of the least recently used code objects are put on probation in anticipation of the need to swap code between main memory and bulk memory. A call for or a return to an object on probation serves to remove the object from probation.
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Bennett John G.
Hejlsberg Anders
Kukol Peter
Borland International Inc.
Clark David L.
Loomis John C.
Smart John A.
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