ProfilingServices.cs

using Microsoft.ApplicationInsights;
using System;
using System.Diagnostics;

namespace PostSharp.Samples.Profiling
{
  public static class ProfilingServices
  {

    private static readonly Stopwatch stopwatch = Stopwatch.StartNew();

    internal static long GetTimestamp() => stopwatch.ElapsedTicks + 1;

    public static long StartTimestamp { get; private set; }


    public static bool IsEnabled => Publisher != null;

    internal static SampleCollector Collector { get; } = new SampleCollector();
    internal static MetricPublisher Publisher { get; private set; }

    public static void Initialize(TelemetryClient client, TimeSpan publishPeriod)
    {
      Publisher = new MetricPublisher(Collector, client);
      StartTimestamp = GetTimestamp();
      Publisher.Start(publishPeriod);
    }

    public static void Uninitialize()
    {
      Publisher?.Dispose();
      Publisher = null;
    }
  }
}