Method and apparatus for determining frequency of execution...

Details Method and apparatus for determining frequency of execution... Method and apparatus for determining frequency of execution...

2004-10-15

2008-08-12

Zhen, Wei Y. (Department: 2191)

Data processing: software development, installation, and managem

Software program development tool

Testing or debugging

C717S128000, C717S130000, C717S131000

Reexamination Certificate

active

07412693

ABSTRACT:
One embodiment of the present invention provides a system that facilitates determining a frequency of execution of compiled methods within a virtual machine. The system starts by determining if a compiled method is executing. If so, the system sets a flag corresponding to the compiled method to indicate that the compiled method is executing. Periodically, the system scans the flag and increments the value of a corresponding counter if the flag is set, and then resets the flag. Finally, the system analyzes the value of the counter to determine a frequency of execution of the compiled method.

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Ball, et al. “Efficient Path Profiling”, 1996, IEEE, p. 46-57.
Ball, et al. “Optimally Profiling and Tracing Programs”, 1994, ACM, p. 1319-1360.

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