Hewlett-packard Development Company, L.p.

Jose German Rivera

Robert Hundt

Umesh Krishnaswamy

Vinodha Ramasamy

Eric Gouriou

David John Babcock

Thomas Lofgren

Lillian Chou

Disclosed herein are a method and apparatus for logging the execution history of an operating system kernel by including an event description in a production image of the kernel. A command is received in order to enable an event description. The event description is enabled according to the command while the operating system kernel is executing. A description of an event is logged in an event log when the event occurs and when the event is enabled.

Method and apparatus for logging the execution history of an operating system kernel

Method and apparatus for dynamic instrumentation of an executable application program. The application program includes a plurality of functions, each function having an entry point and an endpoint. When the application is executed, a shared memory segment is created for an instrumentation program and the application program. Upon initial invocation of the original functions in the application program, corresponding substitute functions are created in the shared memory segment, the substitute versions including instrumentation code. Thereafter, the substitute functions are executed in lieu of the original functions in the application program.

Dynamic instrumentation of an executable program by means of causing a breakpoint at the entry point of a function and providing instrumentation code

Method and apparatus for analysis of executable program code. The executable program includes segments of code that correspond to callable functions in the source code from which the executable code was generated. Compiler-generated checkpoint descriptors are included in the executable and include pairs of entry points and endpoints. Each pair of entry points and endpoints is associated with a callable function in the source code. The pairs of entry points and endpoints are read from the executable program code and used to generate analysis data for the associated functions. In other embodiments, pairs of entry points and endpoints are additionally assembled from dynamic load modules and symbol tables.

Analysis of executable program code using compiler-generated function entry points and endpoints with other sources of function entry points and endpoints

Growing community of inventors

Sunnyvale, CA, United States of America

Jose German Rivera