FAILSAFE MECHANISM FOR DYNAMIC INSTRUMENTATION OF SOFTWARE USING CALLBACKS

摘要

The fail-safe mechanism is provided for installing and removing temporary instrumentation during the runtime of the application. Initially, the application will be configured with a baseline set of the components to be measured (for instance, such as the method). Then, the additional measurement, and as to diagnose performance problems, it is arranged on the application. Even if the fail-safe mechanism, failure of the interrupt, a computing device failure, software failure, or some other type of the communication link to the application exists (this makes it impossible to roll back the manual measurement from the remote user interface), an additional It ensures that the measurement is automatically removed. Failsafe mechanism can be provided using callbacks (this also when detecting that the connection is unexpectedly lost or closed) between the computing devices. One end of the callback may be connected to one or more of the other dependent callback. Instrumentation rollback can involve reloading the byte code of the application that are not measured. ;