Method, computer program product, and system for non-blocking dynamic update of statically typed class-based object-oriented software
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United States of America Patent
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Apr 22, 2014
Grant Date -
Nov 17, 2011
app pub date -
Nov 16, 2010
filing date -
Dec 18, 2009
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Abstract
A method, computer program product, and system for non-blocking dynamic update of statically-typed class-based object-oriented software executing as byte-code on a virtual machine within an actively running computer system is provided. A set of objects instantiated from an existing module or multiple modules (identifiable collections of application resources and class definitions in the form of byte-code representations) is ready for execution on a virtual machine in an actively running computer system. New versions of one or more modules corresponding to those already loaded into the actively running virtual machine are dynamically loaded into the virtual machine for the purpose of updating the running software. The class definitions within the loaded modules are prepared for dynamic update by inserting byte-code that enables; transparent state transfer and shared object identity between objects of a former version and the new version of a class.
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