PerformanceMonitor.GetData

gistfile1.txt

    internal byte[] GetData(string item)
    {
      int num = 17;
      int millisecondsTimeout = 0;
      int error = 0;
      new RegistryPermission(PermissionState.Unrestricted).Assert();
      while (num > 0)
      {
        try
        {
          return (byte[]) this.perfDataKey.GetValue(item);
        }
        catch (IOException ex)
        {
          error = Marshal.GetHRForException((Exception) ex);
          switch (error)
          {
            case 1722:
            case 1726:
            case 6:
              this.Init();
              goto case 170;
            case 170:
            case 258:
            case 21:
            case 167:
              --num;
              if (millisecondsTimeout == 0)
              {
                millisecondsTimeout = 10;
                continue;
              }
              else
              {
                Thread.Sleep(millisecondsTimeout);
                millisecondsTimeout *= 2;
                continue;
              }
            default:
              throw SharedUtils.CreateSafeWin32Exception(error);
          }
        }
        catch (InvalidCastException ex)
        {
          throw new InvalidOperationException(SR.GetString("CounterDataCorrupt", new object[1]
          {
            (object) this.perfDataKey.ToString()
          }), (Exception) ex);
        }
      }
      throw SharedUtils.CreateSafeWin32Exception(error);
    }