コンストラクタの詳細

• RrdMemoryBackend

  protected RrdMemoryBackend​(java.lang.String path)

メソッドの詳細

• write

  protected void write​(long offset,
                       byte[] b)

  クラスからコピーされた説明: RrdBackend
  Writes an array of bytes to the underlying storage starting from the given storage offset.

  定義:

  write クラス内 RrdBackend

  パラメータ:

  offset - Storage offset.

  b - Array of bytes that should be copied to the underlying storage

• read

  protected void read​(long offset,
                      byte[] b)
               throws java.io.IOException

  クラスからコピーされた説明: RrdBackend
  Reads an array of bytes from the underlying storage starting from the given storage offset.

  定義:

  read クラス内 RrdBackend

  パラメータ:

  offset - Storage offset.

  b - Array which receives bytes from the underlying storage

  例外:

  java.io.IOException - Thrown in case of I/O error

• getLength

  public long getLength​()

  Returns the number of RRD bytes held in memory.

  定義:

  getLength クラス内 RrdBackend

  戻り値:

  Number of all RRD bytes.

• setLength

  protected void setLength​(long newLength)
                    throws java.io.IOException

  Reserves a memory section as a RRD storage.

  定義:

  setLength クラス内 RrdBackend

  パラメータ:

  newLength - Number of bytes held in memory.

  例外:

  java.io.IOException - Thrown in case of I/O error.

• close

  public void close​()

  This method is required by the base class definition, but it does not releases any memory resources at all.

  オーバーライド:

  close クラス内 RrdBackend

• isCachingAllowed

  protected boolean isCachingAllowed​()

  This method is overridden to disable high-level caching in frontend JRobin classes.

  オーバーライド:

  isCachingAllowed クラス内 RrdBackend

  戻り値:

  Always returns false. There is no need to cache anything in high-level classes since all RRD bytes are already in memory.