Visual Profiler CPU

Introduce

Visual Profiler is a lightweight/header-only/singleton-pattern file which generate a json file to profile your CPU code. The backend is using chrome://tracing. Therefore, the json file needs to be complied with the chrome::tracing format

How to use

Download/copy-paste the VisualProfiler.hpp
Insert PROFILE_FUNCTION() Marco into the functions you want to profile e.g.

void dummyFunction()
{
    PROFILE_FUNCTION(); // place marco at the topest of the function

    . . .  

}

Insert Instrumentor::get().beginSession("name")

int main()
{
    Instrumentor::get().beginSession("Profile");  // insert beginSession
    dummyPrintOut();
    dummySum();
    dummyFactorial();
    Instrumentor::get().endSession();
    
}

Open Chrome tracing and type Chrome:://tracing in your Chrome
Drag and drop the ProfileResult.json

Example

Check the code in main.cpp
you can git clone this repo and try it out

mkdir build && cd build
cmake ..
make 
./VisualProfiler

Note

If you are using it to profile a large program, likely you might use ctrl+c to terminate it during runtime. In this case, your will NOT call writeFooter() correctly, you will need to manually add "]}" to the end of the json file.

Reference