Synchronous detection and signaling of memory quota...

Details Synchronous detection and signaling of memory quota... Synchronous detection and signaling of memory quota...

2005-11-03

2010-10-12

Ellis, Kevin L (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Memory configuring

Reexamination Certificate

active

07814290

ABSTRACT:
One embodiment of the present invention provides a method and a system for synchronous detection and signaling of memory quota violations for sequential memory allocation in a shared heap. The system detects a potential quota violation if a check of approximate memory usage indicates that an attempt to allocate memory may violate a task's memory quota. Upon detecting such a potential quota violation, the system proceeds to reconcile the task's exact memory usage. If the task's exact memory usage violates the task's memory quota, the system signals a synchronous quota violation at the time of the violation. Synchronously signaling quota violations in this manner provides accurate quota violation detection and signaling without reducing the performance of sequential memory allocation. The method also improves the accuracy of approximate per-task memory usage tracking by reconciling exact memory usage when an estimate of the task's memory usage exceeds the task's memory quota.

REFERENCES:
patent: 7028298 (2006-04-01), Foote
patent: 7206890 (2007-04-01), Mathiske
patent: 7424589 (2008-09-01), Pliss et al.

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