org.dromara.hutool.core.collection.queue

Class CheckedLinkedBlockingQueue<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<E>

java.util.concurrent.LinkedBlockingQueue<E>

org.dromara.hutool.core.collection.queue.CheckedLinkedBlockingQueue<E>

Type Parameters:

E - 元素类型

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, BlockingQueue<E>, Queue<E>

Direct Known Subclasses:

MemorySafeLinkedBlockingQueue

public class CheckedLinkedBlockingQueue<E>
extends LinkedBlockingQueue<E>

自定义加入前检查的LinkedBlockingQueue，给定一个检查函数，在加入元素前检查此函数
原理是通过Runtime#freeMemory()获取剩余内存，当剩余内存低于指定的阈值时，不再加入。

Since:

6.0.0

Author:

looly

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Predicate<E>	checker 检查函数

Constructor Summary

Constructors

Constructor and Description
CheckedLinkedBlockingQueue(Collection<? extends E> c, Predicate<E> checker) 构造
CheckedLinkedBlockingQueue(Predicate<E> checker) 构造

Method Summary

Modifier and Type	Method and Description
boolean	offer(E e)
boolean	offer(E e, long timeout, TimeUnit unit)
void	put(E e)

Methods inherited from class java.util.concurrent.LinkedBlockingQueue

clear, contains, drainTo, drainTo, iterator, peek, poll, poll, remainingCapacity, remove, size, spliterator, take, toArray, toArray, toString

Methods inherited from class java.util.AbstractQueue

add, addAll, element, remove

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.BlockingQueue

add

Methods inherited from interface java.util.Queue

element, remove

Methods inherited from interface java.util.Collection

addAll, containsAll, equals, hashCode, isEmpty, parallelStream, removeAll, removeIf, retainAll, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

checker

protected final Predicate<E> checker

检查函数

Constructor Detail

CheckedLinkedBlockingQueue

public CheckedLinkedBlockingQueue(Predicate<E> checker)

构造

Parameters:

checker - 检查函数

CheckedLinkedBlockingQueue

public CheckedLinkedBlockingQueue(Collection<? extends E> c,
                                  Predicate<E> checker)

构造

Parameters:

c - 初始集合

checker - 检查函数

Method Detail

put

public void put(E e)
         throws InterruptedException

Specified by:

put in interface BlockingQueue<E>

Overrides:

put in class LinkedBlockingQueue<E>

Throws:

InterruptedException

offer

public boolean offer(E e,
                     long timeout,
                     TimeUnit unit)
              throws InterruptedException

Specified by:

offer in interface BlockingQueue<E>

Overrides:

offer in class LinkedBlockingQueue<E>

Throws:

InterruptedException

offer

public boolean offer(E e)

Specified by:

offer in interface BlockingQueue<E>

Specified by:

offer in interface Queue<E>

Overrides:

offer in class LinkedBlockingQueue<E>