Package org.apache.flink.runtime.memory

Class OpaqueMemoryResource<T>

java.lang.Object

org.apache.flink.runtime.memory.OpaqueMemoryResource<T>

All Implemented Interfaces:

AutoCloseable

public final class OpaqueMemoryResource<T>
extends Object
implements AutoCloseable

An opaque memory resource, meaning a memory resource not understood by Flink or the JVM. An example for this is a native resource, like RocksDB's block cache memory pool.

The resource must be closed after it is not used any more.

Constructor Summary

Constructors

Constructor	Description
OpaqueMemoryResource(T resourceHandle, long size, org.apache.flink.util.function.ThrowingRunnable<Exception> disposer)

Method Summary

Modifier and Type	Method	Description
void	close()	Releases this resource.
T	getResourceHandle()	Gets the handle to the resource.
long	getSize()	Gets the size, in bytes.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

OpaqueMemoryResource

public OpaqueMemoryResource(T resourceHandle,
                            long size,
                            org.apache.flink.util.function.ThrowingRunnable<Exception> disposer)

Method Detail

getResourceHandle

public T getResourceHandle()

Gets the handle to the resource.

getSize

public long getSize()

Gets the size, in bytes.

close

public void close()
           throws Exception

Releases this resource. This method is idempotent.

Specified by:

close in interface AutoCloseable

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object