public static long log(Logger logger,String message){
  long now=0;
  if (logger.isTraceEnabled()) {
    now=System.currentTimeMillis();
    logger.trace("PERFORMANCE: {}: {}",now,message);
  }
  return now;
}

public static long log ( Logger logger , String message ) { long now = 0 ; if ( logger . isTraceEnabled ( ) ) { now = System . currentTimeMillis ( ) ; logger . trace ( "PERFORMANCE: {}: {}" , now , message ) ; } return now ; }
log given message and the current time , then return it .
