code: void statsEndRequest(long duration,boolean ok)
      {
          synchronized(_statsLock)
          {
              _requests++;
              _requestsActive--;
              if (_requestsActive<0)
                  _requestsActive=0;
              if (_requestsActive < _requestsActiveMin)
                  _requestsActiveMin=_requestsActive;
              
              if (ok)
              {
                  _requestsDurationTotal+=duration;
                  if (_requestsDurationMin==0 || duration<_requestsDurationMin)
                      _requestsDurationMin=duration;
                  if (duration>_requestsDurationMax)
                      _requestsDurationMax=duration;
              }
              else
                  _errors++;
          }
      }
docs: /* ------------------------------------------------------------