Method for modifying a class file to monitor data flow
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United States of America Patent
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May 19, 2009
Grant Date -
Feb 12, 2004
app pub date -
Dec 31, 2002
filing date -
Aug 10, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for modifying a class file to monitor data flow is provided. The method includes selecting (401) one or more methods in the class file and adding (206, 209) one or more lines of code to report incoming arguments and return values, if any, in the selected method. The incoming arguments and return values are reported (405, 410) to an instrumentation interface which may be an instrumentation class defining methods for each type of argument in the method. The one or more lines of code pass the incoming arguments and return values to the appropriate instrumentation class method. The method may produce a profile of data flow including a record of incoming arguments and return values, if any, for one or more methods in a class file. The record can include data describing the types and values of arguments and return values and their distribution.
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