org.apache.shenyu.common.concurrent

Class MemorySafeLinkedBlockingQueue<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<E>

java.util.concurrent.LinkedBlockingQueue<E>

org.apache.shenyu.common.concurrent.MemorySafeLinkedBlockingQueue<E>

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.concurrent.BlockingQueue<E>, java.util.Queue<E>

Direct Known Subclasses:

MemorySafeTaskQueue

public class MemorySafeLinkedBlockingQueue<E>
extends java.util.concurrent.LinkedBlockingQueue<E>

Can completely solve the OOM problem caused by LinkedBlockingQueue, does not depend on Instrumentation and is easier to use than MemoryLimitedLinkedBlockingQueue.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MemorySafeLinkedBlockingQueue(java.util.Collection<? extends E> c, int maxFreeMemory)
MemorySafeLinkedBlockingQueue(int maxFreeMemory)

Method Summary

Modifier and Type	Method and Description
int	getMaxFreeMemory() get the max free memory.
boolean	hasRemainedMemory() determine if there is any remaining free memory.
boolean	offer(E e)
boolean	offer(E e, long timeout, java.util.concurrent.TimeUnit unit)
void	put(E e)
void	setMaxFreeMemory(int maxFreeMemory) set the max free memory.
void	setRejector(Rejector<E> rejector) set the rejector.

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

Constructor Detail

MemorySafeLinkedBlockingQueue

public MemorySafeLinkedBlockingQueue(int maxFreeMemory)

MemorySafeLinkedBlockingQueue

public MemorySafeLinkedBlockingQueue(java.util.Collection<? extends E> c,
                                     int maxFreeMemory)

Method Detail

setMaxFreeMemory

public void setMaxFreeMemory(int maxFreeMemory)

set the max free memory.

Parameters:

maxFreeMemory - the max free memory

getMaxFreeMemory

public int getMaxFreeMemory()

get the max free memory.

Returns:

the max free memory limit

setRejector

public void setRejector(Rejector<E> rejector)

set the rejector.

Parameters:

rejector - the rejector

hasRemainedMemory

public boolean hasRemainedMemory()

determine if there is any remaining free memory.

Returns:

true if has free memory

put

public void put(E e)
         throws java.lang.InterruptedException

Specified by:

put in interface java.util.concurrent.BlockingQueue<E>

Overrides:

put in class java.util.concurrent.LinkedBlockingQueue<E>

Throws:

java.lang.InterruptedException

offer

public boolean offer(E e,
                     long timeout,
                     java.util.concurrent.TimeUnit unit)
              throws java.lang.InterruptedException

Specified by:

offer in interface java.util.concurrent.BlockingQueue<E>

Overrides:

offer in class java.util.concurrent.LinkedBlockingQueue<E>

Throws:

java.lang.InterruptedException

offer

public boolean offer(E e)

Specified by:

offer in interface java.util.concurrent.BlockingQueue<E>

Specified by:

offer in interface java.util.Queue<E>

Overrides:

offer in class java.util.concurrent.LinkedBlockingQueue<E>