ProfilerScope.cs

#if UNITY_EDITOR || DEVELOPMENT_BUILD
#define PROFILING_ENABLED
#endif

#if NET_4_6 || NET_STANDARD_2_0 || NETFX_CORE
#define NET_MODERN
#endif

using System;
using System.Diagnostics;
using UnityEngine;
using UnityEngine.Profiling;

  /// <summary>
  /// Helper class for opening and closing Unity profiler samples
  /// </summary>
  public static class ProfilerScope
  {
      /// <summary>
      /// Open a new Unity profiler sample. Must be called from within
      /// a using statement to guarantee cleanup.
      /// </summary>
      public static ProfilerScopeToken Sample(
#if NET_MODERN && PROFILING_ENABLED
          [System.Runtime.CompilerServices.CallerMemberName]
          string callerMember = ""
#endif
      ) 
      {

#if PROFILING_ENABLED
          string sampleName;

#if NET_MODERN
          sampleName = callerMember;
#else
          var frame = new StackFrame(1);
    var callingMethod = frame.GetMethod();
          sampleName = callingMethod.Name;
#endif

          Profiler.BeginSample(sampleName);
#endif

          return new ProfilerScopeToken();
      }

      /// <summary>
      /// Disposable token for closing the current profiler scope
      /// Has to be a struct to prevent GC generation in release builds
      /// </summary>
      public struct ProfilerScopeToken : IDisposable 
      {
#if PROFILING_ENABLED
    bool disposed;
#endif

    public void Dispose()
    {
#if PROFILING_ENABLED
      if (disposed) 
      {
        return;
      }

      disposed = true;
      Profiler.EndSample();
#endif
    }         
      }
  }