Dynamic determination of execution sequence
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United States of America Patent
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Jan 7, 2003
Grant Date -
N/A
app pub date -
Jul 22, 1998
filing date -
Jul 22, 1998
priority date (Note) -
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Abstract
A method and apparatus is disclosed for dynamically determining the order of execution of a plurality of computer program components. A characterization mechanism provides an annotation of each executable component. A partial order mechanism depends upon the characterization mechanism, and enables a first executable component to declare which other executable components, times, data sets, or other resources are pre-conditions to execution of the first executable component. At load time, a partial order evaluator resolves the pre-conditions and generates a final order of execution of the components based upon interdependencies and resource requirements represented in the pre-conditions. In a preferred embodiment, the pre-conditions are stored in an acyclic directed graph, and the final order is generated by making a breadth-first traversal of the graph and adding nodes of the graph to the final order in the order in which the nodes are traversed.
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