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Light-Weight Instrumentation From Relational Queries Over Program Traces
Light-Weight Instrumentation From Relational Queries Over Program Traces.
Simon Goldsmith, Robert O'Callahan and Alex Aiken.
Neel mentioned this paper when I complained on LtU1 that I haven't seen something interesting enough to post for a while. It is indeed an interesting, well written, paper. The authors show the design of Program Trace Query Language (PTQL), a declarative language for querying program behaviour. The PTQL compiler can then be used to instrument a java bytecodes and insert the required data capture operations. Quite a lot of effot went into making the instrumented code efficient enough to allow queries to be evaluated while the program is running. |
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