Method and system for auto-instrumenting java applications through probe injection
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United States of America Patent
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Issued Date -
Jun 24, 2004
app pub date -
Dec 18, 2002
filing date -
Dec 18, 2002
priority date (Note) -
Abandoned
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Abstract
A technique is presented for instrumenting a Java application in a just-in-time fashion. A software developer obtains Java class files that comprise an application that the software developer desires to instrument. The software developer also obtains code for instrumentation probes; each probe is associated with a location in an application, e.g., a specific method within a specific class. The probes along with the associated locations are registered in a registry, either programmatically or by loading a configuration file. At class load time, an injector determines whether a loaded class has any instrumentation locations as predetermined by information in the registry. If so, the injector inserts hooks in the loaded class. When the hooks are executed, the hooks can manage the execution of the probes, which can be dynamically added or removed from the registry during runtime and/or dynamically enabled or disabled during runtime.
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