Class ArrayByteBufferPool.Quadratic

java.lang.Object

org.eclipse.jetty.io.ArrayByteBufferPool

org.eclipse.jetty.io.ArrayByteBufferPool.Quadratic

All Implemented Interfaces:

ByteBufferPool, Dumpable

Enclosing class:

ArrayByteBufferPool

public static class ArrayByteBufferPool.Quadratic
extends ArrayByteBufferPool

A variant of the ArrayByteBufferPool that uses buckets of buffers that increase in size by a power of 2 (e.g. 1k, 2k, 4k, 8k, etc.).

Nested Class Summary

Nested classes/interfaces inherited from class ArrayByteBufferPool

ArrayByteBufferPool.Quadratic, ArrayByteBufferPool.Tracking, ArrayByteBufferPool.WithBucketCapacities

Nested classes/interfaces inherited from interface ByteBufferPool

ByteBufferPool.Accumulator, ByteBufferPool.NonPooling, ByteBufferPool.Sized, ByteBufferPool.Wrapper

Nested classes/interfaces inherited from interface Dumpable

Dumpable.DumpableContainer, Dumpable.DumpAppendable

Field Summary

Fields inherited from interface ByteBufferPool

NON_POOLING, SIZED_NON_POOLING

Fields inherited from interface Dumpable

LEGEND

Constructor Summary

Constructors

Constructor	Description
Quadratic()	Creates a pool with buckets starting at 1 KiB up to 64 KiB.
Quadratic(int minCapacity, int maxCapacity, int maxBucketSize)	Creates a pool with the specified minCapacity, maxCapacity and maxBucketSize, see Quadratic(int, int, int, long, long).
Quadratic(int minCapacity, int maxCapacity, int maxBucketSize, long maxHeapMemory, long maxDirectMemory)	Creates a pool with buckets starting at the closest power of 2 larger than minCapacity, up to the closest power of 2 larger than maxCapacity.

Method Summary

Methods inherited from class ArrayByteBufferPool

acquire, clear, dump, getAvailableDirectByteBufferCount, getAvailableDirectMemory, getAvailableHeapByteBufferCount, getAvailableHeapMemory, getDirectBucketsStatistics, getDirectByteBufferCount, getDirectMemory, getHeapBucketsStatistics, getHeapByteBufferCount, getHeapMemory, getMaxCapacity, getMinCapacity, getNoBucketDirectAcquires, getNoBucketHeapAcquires, getReserved, isStatisticsEnabled, poolFor, setStatisticsEnabled, toString

Methods inherited from class Object

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

Methods inherited from interface Dumpable

dump, dumpSelf

Constructor Details

Quadratic

public Quadratic()

Creates a pool with buckets starting at 1 KiB up to 64 KiB.

Quadratic

public Quadratic(int minCapacity,
 int maxCapacity,
 int maxBucketSize)

Creates a pool with the specified minCapacity, maxCapacity and maxBucketSize, see Quadratic(int, int, int, long, long).

Parameters:

minCapacity - the capacity under which buffers will not be pooled

maxCapacity - the capacity above which buffers will not be pooled

maxBucketSize - the max number of buffers in a bucket

Quadratic

public Quadratic(int minCapacity,
 int maxCapacity,
 int maxBucketSize,
 long maxHeapMemory,
 long maxDirectMemory)

Creates a pool with buckets starting at the closest power of 2 larger than minCapacity, up to the closest power of 2 larger than maxCapacity.

For example, with minCapacity=100 and maxCapacity=800, the buckets will have capacities 128, 256, 512, 1024.

A non-positive minCapacity establishes the first bucket at 1 KiB.

A non-positive maxCapacity establishes the last bucket at 64 KiB.

Parameters:

minCapacity - the capacity under which buffers will not be pooled

maxCapacity - the capacity above which buffers will not be pooled

maxBucketSize - the max number of buffers in a bucket

maxHeapMemory - the max heap memory in bytes, -1 for unlimited memory or 0 to use default heuristic

maxDirectMemory - the max direct memory in bytes, -1 for unlimited memory or 0 to use default heuristic