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C#-Quelltext

public static void Main(string[] Args)
        {
            DateTime LastValue = DateTime.Now;
            Stopwatch Watch = new Stopwatch();
            Watch.Reset();
            Watch.Start();
            double t = 0;
            int res = 100000;
            int rres = 0;
            for (int i = 0; i < res; ++i)
            {
                DateTime NewValue = DateTime.Now;
                if (NewValue != LastValue)
                {
                    ++rres;
                    t += Watch.Elapsed.TotalMilliseconds;

                    Watch.Reset();
                    Watch.Start();
                    
                    LastValue = NewValue;
                }
            }
            double t2 = t / rres;
            Console.WriteLine(t2.ToString() + "ms");
        }

C#-Quelltext

public static void Main(String[] args)
{
    var oldValue = DateTime.Now;
    var newValue = oldValue;

    var counter = 0;
    var elapsed = 0L;

    var stopwatch = Stopwatch.StartNew();

    while (counter < 100)
    {
        newValue = DateTime.Now;

        if (newValue != oldValue)
        {
            counter += 1;
            elapsed += stopwatch.ElapsedMilliseconds;

            stopwatch.Restart();

            oldValue = DateTime.Now;
        }
    }

    Console.WriteLine("{0}ms", elapsed / (Single)counter);
    Console.ReadKey();
}

Quellcode

0,8006ms
0,8898ms
0,8578ms
2,4649ms
0,0101ms
0,239ms
0,0101ms
0,0093ms
0,282ms
0,9064ms
0,0081ms
0,0028ms
0,0089ms
0,0105ms
0,4696ms
0,5737ms
0,0081ms
0,6989ms
0,8776ms
0,9433ms
0,9226ms
0,1827ms

C-/C++-Quelltext

#include <Windows.h>
#include <mmsystem.h>

#include <exception>
#include <iostream>
#include <cstdlib>
#include <chrono>

main( int argc, char* argv[] )
    -> int
{
    using std::chrono::time_point;
    using std::chrono::high_resolution_clock;
    using std::chrono::duration_cast;
    using std::chrono::milliseconds;

    if( 2 != argc )
    {
        std::cout << "use: <app> <res>" << std::endl;
        return 0;
    }

    int res = std::atoi( argv[1] );
    size_t t0 = 0;
    size_t t1 = 0;

    // Test timeGetTime( )
    time_point<high_resolution_clock> start = high_resolution_clock::now( );
    for ( int i = 0; i < res; ++i )
    {
        t0 = t1 = timeGetTime( );
        while ( t0 == t1 )
        {
            t1 = timeGetTime( );
        }
    }
    time_point<high_resolution_clock> stop = high_resolution_clock::now( );
    auto result1 = static_cast<double>( duration_cast<milliseconds>( stop - start ).count( ) ) / res;

    // Console Test 1
    start = high_resolution_clock::now( );
    for ( int i = 0; i < res; ++i )
    {
        std::cout << "0815" << std::endl;
    }
    stop = high_resolution_clock::now( );
    auto result2 = static_cast<double>( duration_cast<milliseconds>( stop - start ).count( ) ) / res;

    // Console Test 2
    start = high_resolution_clock::now( );
    for ( int i = 0; i < res; ++i )
    {
        std::cout << "Hello World! 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20" << std::endl;
    }
    stop = high_resolution_clock::now( );
    auto result3 = static_cast<double>( duration_cast<milliseconds>( stop - start ).count( ) ) / res;

    std::cout << "Result timeGetTime( ): " << result1 << "ms" << std::endl;
    std::cout << "Result Console Test 1: " << result2 << "ms" << std::endl;
    std::cout << "Result Console Test 2: " << result3 << "ms" << std::endl;

    return 0;
}

Quellcode

Result timeGetTime( ): 1.001ms
Result Console Test 1: 0.444ms
Result Console Test 2: 3.61ms