Package org.eclipse.jetty.io
Class ArrayByteBufferPool
java.lang.Object
org.eclipse.jetty.io.AbstractByteBufferPool
org.eclipse.jetty.io.ArrayByteBufferPool
- All Implemented Interfaces:
ByteBufferPool
A ByteBuffer pool where ByteBuffers are held in queues that are held in array elements.
Given a capacity factor
of 1024, the first array element holds a queue of ByteBuffers
each of capacity 1024, the second array element holds a queue of ByteBuffers each of capacity
2048, and so on.
-
Nested Class Summary
Nested classes/interfaces inherited from interface org.eclipse.jetty.io.ByteBufferPool
ByteBufferPool.Bucket, ByteBufferPool.Lease
-
Field Summary
FieldsModifier and TypeFieldDescriptionprivate final ByteBufferPool.Bucket[]
private final ByteBufferPool.Bucket[]
private final int
private static final Logger
-
Constructor Summary
ConstructorsConstructorDescriptionCreates a new ArrayByteBufferPool with a default configuration.ArrayByteBufferPool
(int minCapacity, int factor, int maxCapacity) Creates a new ArrayByteBufferPool with the given configuration.ArrayByteBufferPool
(int minCapacity, int factor, int maxCapacity, int maxQueueLength) Creates a new ArrayByteBufferPool with the given configuration.ArrayByteBufferPool
(int minCapacity, int factor, int maxCapacity, int maxQueueLength, long maxHeapMemory, long maxDirectMemory) Creates a new ArrayByteBufferPool with the given configuration. -
Method Summary
Modifier and TypeMethodDescriptionacquire
(int size, boolean direct) Requests aByteBuffer
of the given size.private int
bucketFor
(int capacity) private ByteBufferPool.Bucket
bucketFor
(int capacity, boolean direct, IntFunction<ByteBufferPool.Bucket> newBucket) (package private) ByteBufferPool.Bucket[]
bucketsFor
(boolean direct) void
clear()
private void
clearOldestBucket
(boolean direct) private long
getByteBufferCount
(boolean direct) long
long
private ByteBufferPool.Bucket
newBucket
(int key) void
release
(ByteBuffer buffer) Returns aByteBuffer
, usually obtained withByteBufferPool.acquire(int, boolean)
(but not necessarily), making it available for recycling and reuse.Methods inherited from class org.eclipse.jetty.io.AbstractByteBufferPool
decrementMemory, getCapacityFactor, getDirectMemory, getHeapMemory, getMaxQueueLength, getMemory, incrementMemory, releaseExcessMemory
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.eclipse.jetty.io.ByteBufferPool
newByteBuffer, remove
-
Field Details
-
LOG
-
_minCapacity
private final int _minCapacity -
_direct
-
_indirect
-
-
Constructor Details
-
ArrayByteBufferPool
public ArrayByteBufferPool()Creates a new ArrayByteBufferPool with a default configuration. -
ArrayByteBufferPool
public ArrayByteBufferPool(int minCapacity, int factor, int maxCapacity) Creates a new ArrayByteBufferPool with the given configuration.- Parameters:
minCapacity
- the minimum ByteBuffer capacityfactor
- the capacity factormaxCapacity
- the maximum ByteBuffer capacity
-
ArrayByteBufferPool
public ArrayByteBufferPool(int minCapacity, int factor, int maxCapacity, int maxQueueLength) Creates a new ArrayByteBufferPool with the given configuration.- Parameters:
minCapacity
- the minimum ByteBuffer capacityfactor
- the capacity factormaxCapacity
- the maximum ByteBuffer capacitymaxQueueLength
- the maximum ByteBuffer queue length
-
ArrayByteBufferPool
public ArrayByteBufferPool(int minCapacity, int factor, int maxCapacity, int maxQueueLength, long maxHeapMemory, long maxDirectMemory) Creates a new ArrayByteBufferPool with the given configuration.- Parameters:
minCapacity
- the minimum ByteBuffer capacityfactor
- the capacity factormaxCapacity
- the maximum ByteBuffer capacitymaxQueueLength
- the maximum ByteBuffer queue lengthmaxHeapMemory
- the max heap memory in bytesmaxDirectMemory
- the max direct memory in bytes
-
-
Method Details
-
acquire
Description copied from interface:ByteBufferPool
Requests a
ByteBuffer
of the given size.The returned buffer may have a bigger capacity than the size being requested but it will have the limit set to the given size.
- Parameters:
size
- the size of the bufferdirect
- whether the buffer must be direct or not- Returns:
- the requested buffer
- See Also:
-
release
Description copied from interface:ByteBufferPool
Returns a
ByteBuffer
, usually obtained withByteBufferPool.acquire(int, boolean)
(but not necessarily), making it available for recycling and reuse.- Parameters:
buffer
- the buffer to return- See Also:
-
newBucket
-
clear
public void clear()- Overrides:
clear
in classAbstractByteBufferPool
-
clearOldestBucket
private void clearOldestBucket(boolean direct) -
bucketFor
private int bucketFor(int capacity) -
bucketFor
private ByteBufferPool.Bucket bucketFor(int capacity, boolean direct, IntFunction<ByteBufferPool.Bucket> newBucket) -
getDirectByteBufferCount
-
getHeapByteBufferCount
-
getByteBufferCount
private long getByteBufferCount(boolean direct) -
bucketsFor
-