Data processing: software development – installation – and managem – Software program development tool – Testing or debugging
Reexamination Certificate
2008-06-10
2008-06-10
Dam, Tuan (Department: 2192)
Data processing: software development, installation, and managem
Software program development tool
Testing or debugging
C717S131000, C717S132000
Reexamination Certificate
active
07386838
ABSTRACT:
Program execution profile data is collected by direct measurement of some code paths, and by inferring data for unmeasured paths. The data collection process may cause errors, which are propagated by the inferencing process. The profile data thus constructed is further enhanced by detecting certain data mismatches, and adjusting inferred data to reduce the scope of errors propagated during the inferencing process. Preferably, a control flow graph of the program being measured is constructed. Mismatches in the total weights of input arcs versus output arcs are detected. For certain specific types of mismatches, it can be known or guessed which count is incorrect, and this count is accordingly corrected. Correction of arc counts proceeds recursively until it is no longer possible to correct mismatches. Additionally, certain other conditions are adjusted as presumed inaccuracies.
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Chou Andrew
Dam Tuan
International Business Machines - Corporation
Truelson Roy W.
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