Package org.apache.hadoop.ozone.container.keyvalue.impl

Class MappedBufferManager

java.lang.Object

org.apache.hadoop.ozone.container.keyvalue.impl.MappedBufferManager

public class MappedBufferManager
extends Object

A Manager who manages the mapped buffers to under a predefined total count, also support reuse mapped buffers.

Constructor Summary

Constructors

Constructor	Description
MappedBufferManager(int capacity)

Method Summary

Modifier and Type	Method	Description
int	availableQuota()
ByteBuffer	computeIfAbsent(String file, long position, long size, Supplier<ByteBuffer> supplier)
boolean	getQuota(int permits)
void	releaseQuota(int permits)

Methods inherited from class java.lang.Object

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

Constructor Details

MappedBufferManager

public MappedBufferManager(int capacity)

Method Details

getQuota

public boolean getQuota(int permits)

releaseQuota

public void releaseQuota(int permits)

availableQuota

public int availableQuota()

computeIfAbsent

public ByteBuffer computeIfAbsent(String file,
 long position,
 long size,
 Supplier<ByteBuffer> supplier)