Class LocalPool<B>

java.lang.Object

org.cojen.tupl.util.LocalPool<B>

public final class LocalPool<B>
extends Object

Utility for sharing a small set of poolable objects (like buffers) which have thread affinity. A thread should only request a single object from the pool to prevent deadlocks.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	LocalPool.Entry<B>	Entry within a LocalPool.

Constructor Summary

Constructors

Constructor	Description
LocalPool(Supplier<B> supplier)	Construct a pool with a maximum size equal to the number of available processors.
LocalPool(Supplier<B> supplier, int maxSize)	Construct a pool with the given maximum size.

Method Summary

Modifier and Type	Method	Description
LocalPool.Entry<B>	access()	Returns an available pooled object, blocking if necessary.
void	clear(Consumer<B> consumer)	Removes all pooled objects and passes them to the optional consumer for cleanup.

Methods inherited from class java.lang.Object

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

Constructor Details

LocalPool

public LocalPool(Supplier<B> supplier)

Construct a pool with a maximum size equal to the number of available processors.

Parameters:

supplier - can pass null to create entries which initially reference null

LocalPool

public LocalPool(Supplier<B> supplier,
 int maxSize)

Construct a pool with the given maximum size. If negative, then this is multiplied by the number of available processors and negated.

Parameters:

supplier - can pass null to create entries which initially reference null

Method Details

access

public LocalPool.Entry<B> access()

Returns an available pooled object, blocking if necessary.

clear

public void clear(Consumer<B> consumer)

Removes all pooled objects and passes them to the optional consumer for cleanup. Calling this method doesn't prevent new pooled objects from being created concurrently by the original supplier.