C++ High Performance

Instrumentation profilers

By instrumentation, we mean inserting code into the program to be analyzed in order to gather information about how frequently each function is being executed. Typically, the inserted instrumentation code records each entry and exit point. You can write your own primitive instrumentation profiler by inserting the code manually yourself, or you can use a tool that automatically inserts the necessary code as a step in the build process. A naive implementation might be good enough for your purposes, but be aware of the impact that the added code can have on the performance, which can make the profile misleading. Another problem with naive implementations is that they might prevent compiler optimizations or run the risk ...