Method and system for tracking target variable in executable program

Abstract

The invention provides a method and a system for tracking a target variable in an executable program. The method comprises the following steps: reading description information, wherein the description information identifies an acquisition source of a base address of an area to which a target variable belongs and address offset of the target variable in the area to which the target variable belongs; acquiring a base address of an area to which the target variable belongs from an acquisition source identified by the description information by using a process identifier of the executable program; determining an actual address of the target variable according to the base address and the address offset; and reading the target variable from the actual address. According to the method, the actual address of the target variable in the process space of the executable program is determined through the address offset of the target variable, the data change on the address is tracked, a user does not need to add a debugging statement, source code support is not needed, and any target variable in the executable program can be tracked.

Description

technical field [0001] The present disclosure relates to the domain of operating systems, and in particular, to a method and system for tracking target variables in executable programs. Background technique [0002] The traditional processor trace module (Processor trace) implements data collection of program flow, memory read and write, and bus events. In more complex operating systems such as linux, some task structures with complex structures are often defined, and then some dynamically generated data such as buffers, locks, state machines, and configurations are placed in this structure. Such structures can be traced during program execution using conventional processor / bus trace modules. [0003] However, a large amount of data (tens of MB to GB) will be collected by using the processor tracking module. Because the amount of data is too large, the performance overhead of the analysis software to process the data is relatively large. Moreover, in order to obtain the req...

AI Technical Summary

Problems solved by technology

[0003] However, a large amount of data (tens of MB to GB) will be collected by using the processor tracking module. Because the amount of data is too large, the performance overhead of the analysis software to process the data is relatively large. Moreover, in order to obtain the required data in the received data, the user A comprehensive and deep understanding of the code is required. For example, if you find a process lock state error or scheduling error and want to view the changes of each lock when the process is running, you need to have a comprehensive and deep understanding of all lock definitions and lock access codes in the code , and insert debug statements before and after the lock access code

But this intrusive code insertion is too demanding and inconvenient for users

Images