Sharing data among isolated applications

Details Sharing data among isolated applications Sharing data among isolated applications

2006-07-06

2010-11-23

Ho, Andy (Department: 2194)

Electrical computers and digital processing systems: interprogra

Interprogram communication using shared memory

C719S331000, C719S332000, C717S166000, C718S104000

Reexamination Certificate

active

07840967

ABSTRACT:
A technique for allowing isolated JAVA applications (“isolates”) to share data between themselves is disclosed. According to one aspect, a shared object region, to which multiple isolates may attach, is defined in memory. A shared class loader associated with the region is stored in the region in conjunction with the region's creation. Isolates that can access the region can invoke that loader. The region only comprises objects whose type is defined by a bootstrap class loader or the region's associated shared class loader. Runtime representations of classes defined by the shared class loader are stored in the region. Thus, the types of objects stored in the region are known to all isolates that attach to the region. Isolates attached to the region may enter the context of the region to access objects stored therein. Within the context of a shared object region, all allocation instructions automatically allocate to that region.

REFERENCES:
patent: 6851111 (2005-02-01), McGuire et al.
patent: 7587721 (2009-09-01), Schmidt et al.
Back, Godmar et al., “Processes in KaffeOS: Isoloation, Resolution Management, and Sharing in Java,” School of Computing, University of Utah; 14 pages.
“New I/O APIs,” Sun Microsystems, Inc., 2002; retrieved on Sep. 13, 2006, 2 pages.

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