Boots – shoes – and leggings
Patent
1997-06-19
1998-09-15
Trammell, James P.
Boots, shoes, and leggings
395683, 3951851, G01B 700
Patent
active
058089110
ABSTRACT:
The present invention pertains to a system and method for tracking object references in an object-oriented computing system including a number of independent computing nodes interconnected by a communications link. The reference counting mechanism tracks references to an object at three levels. At a first level, the server handler associated with an object is used to track local references to the object by other user applications within the same domain. At a second level, the inter-process communications facility (i.e., door facility) is used to track object references that are exported to different domains within the same node. At a third level, the kernel object request broker (ORB) is used to track object references that are exported outside the node. When all external object references are released, the ORB notifies the object's server handler of this occurrence. Similarly, the door facility notifies the object's server handler when all inter-domain references have been released. The object's server handler will initiate the appropriate reclamation procedures when it receives notification from the ORB and the door facility and when its own local references have been relinquished.
REFERENCES:
patent: 5724503 (1998-03-01), Kleinmman
Microsoft "Microsoft Windows NT Server Cluster Strategy: High Availability and Scalability With Industry-Standard Hardware" (Microsoft, Business Systems Division White Paper) Unknown Date.
Bernabeu-Auben, J.M et al, "Extending a traditional OS using object-oriented techniques"; Proceedings of the second USENIX Conference on Object-Oriented Technologies and Systems; pp. 53-63 of 261 pp., Jun. 1996.
Khalidi, Y. A.; "Solaris MC: a multi computer OS"; Proceedings of the USENIX 1996 Annual Technical Conference; pp. 191-203 of 352 pp., Jan. 1996 .
Khalidi Yousef A.
Murphy Declan
Talluri Madhusudhan
Tucker Andrew G
Shah Kamini S.
Sun Microsystems Inc.
Trammell James P.
Williams Gary S.
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