code: private boolean isOverFileLimit(int addition) {
          if (LogFile.UNLIMITED == getMaximumSize()) {
              return false;
          }
          // Note: to do this properly, we need to know if the admin updates the
          // file externally, i.e. 'cat /dev/null > file' to clear it out. Windows
          // JDK filechannel.size() was a buffered value (AIX was not), but the
          // file.length() call on each checked the real value each time. This is
          // a slight performance hit but it's the only 100% guarentee of being
          // accurate.
          long newlen = this.myFile.length() + addition;
          return (newlen > getMaximumSize() || 0 > newlen);
      }
docs: Query whether the input amount will push the log file over the maximum
  allowed size.
  
  @param addition
  @return boolean