Method and system for the garbage collection of shared data

Details Method and system for the garbage collection of shared data Method and system for the garbage collection of shared data

2006-02-07

2006-02-07

Gaffin, Jeffrey (Department: 2165)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

06996590

ABSTRACT:
A method of garbage collection of shared data in a system heap within a data processing system, the method comprising the steps of: (a) determining if the contents of the system heap has reached a predetermined threshold, the system heap storing shared objects which are shared amongst a plurality of processes running in a data processing system; (b) in a table identifying each of the plurality of processes with a status field, setting the status field of a process which has carried out determining step (a) to a mark initiator value; (c) triggering remaining processes to mark all objects in the system heap that each process is currently using; (d) determining that each of the remaining processes has completed the marking, at step (c); (e) releasing any unmarked objects in the system heap to an object pool.

REFERENCES:
patent: 6199075 (2001-03-01), Ungar et al.
patent: 6249793 (2001-06-01), Printezis et al.
patent: 6851114 (2005-02-01), Czajkowski
patent: 6865585 (2005-03-01), Dussud

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