Package org.eclipse.jetty.io

Class RetainableByteBuffer

java.lang.Object
org.eclipse.jetty.io.RetainableByteBuffer
All Implemented Interfaces:
Retainable
public class RetainableByteBuffer extends Object implements Retainable

A pooled ByteBuffer which maintains a reference count that is incremented with retain() and decremented with release(). The buffer is released to the pool when release() is called one more time than retain().

A RetainableByteBuffer can either be:

Calling release() on a out of pool and retained instance does not re-pool it while that re-pools it on a out of pool but not retained instance.

  • Method Details

    • capacity

      public int capacity()

    • getBuffer

      public ByteBuffer getBuffer()

    • getLastUpdate

      public long getLastUpdate()

    • isRetained

      public boolean isRetained()
      Checks if retain() has been called at least one more time than release().
      Returns:
      true if this buffer is retained, false otherwise.

    • isDirect

      public boolean isDirect()

    • retain

      public void retain()
      Increments the retained counter of this buffer.
      Specified by:
      retain in interface Retainable

    • release

      public boolean release()
      Decrements the retained counter of this buffer.
      Returns:
      true if the buffer was re-pooled, false otherwise.

    • remaining

      public int remaining()

    • hasRemaining

      public boolean hasRemaining()

    • isEmpty

      public boolean isEmpty()

    • clear

      public void clear()

    • toString

      public String toString()
      Overrides:
      toString in class Object