C++ High Resolution Timer

Intro #

Some basic code to perform high-resolution performance measurements in C++ using the <chrono> library.
 

Code #

GitHub Gist: https://git.io/JJ3xz

//------------------------------------------------------------------------------------------------------------------------------

#include <iostream>
#include <chrono>

//------------------------------------------------------------------------------------------------------------------------------

int main()
{
    // Start timer
    auto start = std::chrono::high_resolution_clock::now();

    //--------------------------------------------------------------------------------------------------------------------------
    // [YOUR CODE HERE]
    //--------------------------------------------------------------------------------------------------------------------------

    // Stop timer
    auto end = std::chrono::high_resolution_clock::now();
    auto duration = (end - start);
    auto us = std::chrono::duration_cast<std::chrono::microseconds>(duration); // Microsecond (as int)
    auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(duration); // Milliseconds (as int)
    const float ms_fractional = static_cast<float>(us.count()) / 1000;         // Milliseconds (as float)
    std::cout << "Duration = " << us.count() << "µs (" << ms_fractional << "ms)" << std::endl;
}

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