Maintaining availability during change of resource dynamic...

Details Maintaining availability during change of resource dynamic... Maintaining availability during change of resource dynamic...

2005-06-17

2009-11-24

Cao, Diem Ky (Department: 2194)

Electrical computers and digital processing systems: interprogra

Dynamic linking, late binding

C717S162000, C717S168000, C709S220000, C709S223000

Reexamination Certificate

active

07624405

ABSTRACT:
An embodiment of the invention is a technique for maintaining application availability during a change in a resource dynamic link library (DLL). A shim resource DLL is linked to a resource DLL managed by a resource manager in a clustered system. The managed resource DLL exports a function to control a resource in the clustered system. During a normal mode, the shim resource DLL passes to the managed resource DLL a call to an exported function unchanged. During a change mode, the shim resource DLL is unlinked from the managed resource DLL to allow the managed resource DLL to be changed, and the shim resource DLL handles a call to an exported function without passing the call to the managed resource DLL.

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