Recovery from nested exceptions in an instrumentation routine

Details Recovery from nested exceptions in an instrumentation routine Recovery from nested exceptions in an instrumentation routine

2007-07-31

2011-10-11

Khatri, Anil (Department: 2191)

Data processing: software development, installation, and managem

Software program development tool

Testing or debugging

C717S128000, C717S130000

Reexamination Certificate

active

08037459

ABSTRACT:
A system and method for instrumentation of software, the software comprising a set of instructions (program or code) which are executable on a processor of a system, for example a computer system. A location in the instruction to insert a probe is first identified. The instruction is replaced with the probe by copying the instruction to a predefined location. The instruction is executed in the kernel space. A first exception is generated upon encountering the probe and calling a first exception handler, and the first exception handler is configured to call an instrumentation routine. A second exception is generated when the instrumentation routine encounters an error and calling a second exception handler, recovering from the exceptions and returning to a sane state to continue normal execution of the instruction.

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