private final boolean largeFile;
    private int pid;
    private long byteOffset;
    private long lengthInBytes;


    /**
     * @param largeFile
     * 
     */
    public LockingAndXRange ( boolean largeFile ) {
        this.largeFile = largeFile;
    }


    /**
     * 
     * @return pid
     */
    public int getPid () {
        return this.pid;
    }


    /**
     * 

            buf.append(ComponentUtil.getSystemHelper().getLogFilePath());
        }
        buf.append(File.separator);
        buf.append("gc-").append(getExecuteType()).append(".log");
        buf.append(":utctime,pid,tags:filecount=5,filesize=64m");
        return jvmOptions(buf.toString());
    }

    public ExecJob jvmOptions(final String... options) {
        Collections.addAll(this.jvmOptions, options);
        return this;

    // open function
    static final int OPEN_FUNCTION_FAIL_IF_EXISTS      = 0x0000;
    static final int OPEN_FUNCTION_OVERWRITE_IF_EXISTS = 0x0020;

    static final int PID = (int)( Math.random() * 65536d );

    static final int SECURITY_SHARE = 0x00;
    static final int SECURITY_USER  = 0x01;

    static final int CMD_OFFSET        = 4;
    static final int ERROR_CODE_OFFSET = 5;