What is instrumented code?

Instrumented code is a tracking mechanism that involves adding code to a software program that monitors certain parameters or activities during execution. The goal of this technique is to gather information about the program's behavior and performance in a real-world environment.

Examples of instrumented code include adding code to track the number of times a certain function is called, monitoring the memory usage of a program, or recording the execution time of different parts of the code. This information can be used to identify performance bottlenecks, diagnose errors, or optimize the program's behavior.

Instrumented code can be implemented using various tools and frameworks, such as performance profiling tools, debuggers, or custom code that is manually added to the program. However, the addition of instrumented code can slow down program execution and add overhead to the program, so it is important to carefully balance the benefits of gathering information against the impact on program performance.