Class ObjectPool<T>

java.lang.Object

io.opentelemetry.sdk.metrics.internal.state.ObjectPool<T>

public final class ObjectPool<T>
extends Object

A pool of objects of type T.

When an object is borrowed from an empty pool, an object will be created by the supplied objectCreator and returned immediately. When the pool is not empty, an object is removed from the pool and returned. The user is expected to return the object to the pool when it is no longer used.

This class is internal and is hence not for public use. Its APIs are unstable and can change at any time.

This class is not thread-safe.

Field Summary

Fields

Modifier and Type	Field	Description
private final Supplier<T>	objectCreator
private final ArrayBasedStack<T>	pool

Constructor Summary

Constructors

Constructor	Description
ObjectPool(Supplier<T> objectCreator)	Constructs an object pool.

Method Summary

Modifier and Type	Method	Description
T	borrowObject()	Gets an object from the pool.
void	returnObject(T object)

Methods inherited from class Object

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

Field Details

pool

private final ArrayBasedStack<T> pool

objectCreator

private final Supplier<T> objectCreator

Constructor Details

ObjectPool

public ObjectPool(Supplier<T> objectCreator)

Constructs an object pool.

Parameters:

objectCreator - Supplier used to create an object when the pool is empty

Method Details

borrowObject

public T borrowObject()

Gets an object from the pool.

Returns:

An object from the pool, or a new object if the pool is empty

returnObject

public void returnObject(T object)