Patent · US Active

Coordinating reference counting between entities executing within separate address spaces

US7581232B2 · kind B2 · utility

9Cited by

10References

14Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

Jose M. Bernabeu-Auban · Sunnyvale, US
Jeff L. Havens · Issaquah, US
Yousef A. Khalidi · Bellevue, US

Key dates

Filing date	May 16, 2005
Grant date	Aug 25, 2009
Priority date	—
Expiry date	Mar 26, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG06F2209/463
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Reference counting is shared between an in-process service runtime and a machine-wide service. The service maintains a global reference count, a global export count, and an exports before revoke count. When the global reference count for a resource or object drops to zero, the machine-wide service deletes the table entry for the object or resource and sends an unref message including the value of the global export count to the sharing process. If the local export count is greater than the global export count of the unref, there are committed exports which have not yet been unreferenced. If both counts are the same, the committed exports have been accounted for and a revoke operation can be issued.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.