CleanableDirectBuffer (Netty API Reference (4.2.3.Final))

```
public interface CleanableDirectBuffer
```
Encapsulates a direct ByteBuffer and its mechanism for immediate deallocation, if any.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`java.nio.ByteBuffer`	`buffer()`	Get the buffer instance.
`void`	`clean()`	Deallocate the buffer.
`default boolean`	`hasMemoryAddress()`
`default long`	`memoryAddress()`	Get the native memory address, but only if `hasMemoryAddress()` returns true, otherwise this may return an unspecified value or throw an exception.

- Method Detail
  - buffer
```
java.nio.ByteBuffer buffer()
```
    Get the buffer instance.
    Note: the buffer must not be accessed after the clean() method has been called.
    
    Returns:
    
    The ByteBuffer instance.
  - clean
```
void clean()
```
    Deallocate the buffer. This method can only be called once per instance, and all usages of the buffer must have ceased before this method is called, and the buffer must not be accessed again after this method has been called.
  - hasMemoryAddress
```
default boolean hasMemoryAddress()
```
    Returns:
    
    true if the native memory address is available, otherwise false.
  - memoryAddress
```
default long memoryAddress()
```
    Get the native memory address, but only if hasMemoryAddress() returns true, otherwise this may return an unspecified value or throw an exception.
    
    Returns:
    
    The native memory address of this buffer, if available.