Oracle America, Inc.

Sun Microsystems, Inc.

Ciaran J Bryce

Grzegorz Jan Czajkowski

Stephen Charles Hahn

Glenn Carlton Skinner

Peter James Soper

Providing an intermediate isolate, referred to as a dispenser, to handle resource requests allows for monitoring and controlling of resource consumption separate from an operating system. Resources are characterized with a set of common attributes, separate from their specific implementation. The dispenser invokes computations that provide policy decisions corresponding to a resource request. The dispenser provides the requesting isolate a response based at least in part on the policy decisions. Separating management of resources from the operating system facilitates implementation of a dispenser in a safe language and management of a broad range of resources by the dispenser.

Dispenser determines responses to resource requests for a single respective one of consumable resource using resource management policy

Controlling rate of resource consumptions improves manageability of resources in relation to the entities consuming the resource. A consumer's resource consumption behavior can be controlled with a mechanism that throttles its resource requests to conform to a threshold rate, such as a resource consumption rate. A set of one or more computations tracks a consumption measurement variable over a given time interval, such as number of resource requests for a given resource within the last 5 seconds. When a resource request is received, the set of computations determine whether servicing the resource request would exceed the threshold rate. If the threshold rate would be exceeded, then the computations sleep until servicing the resource request would not exceed the threshold rate.

Regulation of resource requests to control rate of resource consumption

Providing a resource domain structure allows flexible management of resources. With flexible management, computations, such as threads and processes, do not have to be related to be bound to the same resource domain. Since resource domains do not require the parent-child relationship, unrelated computations can bind each other to their resource domains. A data structure identifies a resource domain, the resource of the domain, and implementation of a resource management policy. The implementation of the resource management policy includes policy action, which when executed invoke policy imposing isolates. The resource domain data structure also indicates availability of usage of the resource.

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Geneva, Switzerland

Ciaran J Bryce