程序包 org.apache.pulsar.common.util.collections

类 ConcurrentOpenHashSet<V>

java.lang.Object

org.apache.pulsar.common.util.collections.ConcurrentOpenHashSet<V>

类型参数:

V -

public class ConcurrentOpenHashSet<V>
extends Object

Concurrent hash set.

Provides similar methods as a ConcurrentMap<K,V> but since it's an open hash map with linear probing, no node allocations are required to store the values.
WARN: method forEach do not guarantee thread safety, nor does the values method.
The forEach method is specifically designed for single-threaded usage. When iterating over a set with concurrent writes, it becomes possible for new values to be either observed or not observed. There is no guarantee that if we write value1 and value2, and are able to see value2, then we will also see value1.
It is crucial to understand that the results obtained from aggregate status methods such as values are typically reliable only when the map is not undergoing concurrent updates from other threads. When concurrent updates are involved, the results of these methods reflect transient states that may be suitable for monitoring or estimation purposes, but not for program control.

嵌套类概要

嵌套类

修饰符和类型	类	说明
static class	ConcurrentOpenHashSet.Builder<V>	Builder of ConcurrentOpenHashSet.

构造器概要

构造器

构造器	说明
ConcurrentOpenHashSet()	已过时。
ConcurrentOpenHashSet(int expectedItems)	已过时。
ConcurrentOpenHashSet(int expectedItems, int concurrencyLevel)	已过时。
ConcurrentOpenHashSet(int expectedItems, int concurrencyLevel, float mapFillFactor, float mapIdleFactor, boolean autoShrink, float expandFactor, float shrinkFactor)

方法概要

修饰符和类型	方法	说明
boolean	add(V value)
long	capacity()
void	clear()
boolean	contains(V value)
void	forEach(Consumer<? super V> processor)	Iterate over all the elements in the set and apply the provided function.
boolean	isEmpty()
static <V> ConcurrentOpenHashSet.Builder<V>	newBuilder()
boolean	remove(V value)
int	removeIf(Predicate<V> filter)
long	size()
String	toString()
List<V>	values()

从类继承的方法 java.lang.Object

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

构造器详细资料

ConcurrentOpenHashSet

@Deprecated
public ConcurrentOpenHashSet()

已过时。

ConcurrentOpenHashSet

@Deprecated
public ConcurrentOpenHashSet(int expectedItems)

已过时。

ConcurrentOpenHashSet

@Deprecated
public ConcurrentOpenHashSet(int expectedItems,
 int concurrencyLevel)

已过时。

ConcurrentOpenHashSet

public ConcurrentOpenHashSet(int expectedItems,
 int concurrencyLevel,
 float mapFillFactor,
 float mapIdleFactor,
 boolean autoShrink,
 float expandFactor,
 float shrinkFactor)

方法详细资料

newBuilder

public static <V> ConcurrentOpenHashSet.Builder<V> newBuilder()

size

public long size()

capacity

public long capacity()

isEmpty

public boolean isEmpty()

contains

public boolean contains(V value)

add

public boolean add(V value)

remove

public boolean remove(V value)

clear

public void clear()

forEach

public void forEach(Consumer<? super V> processor)

Iterate over all the elements in the set and apply the provided function.

Warning: Do Not Guarantee Thread-Safety.

参数:

processor - the function to apply to each element

removeIf

public int removeIf(Predicate<V> filter)

values

public List<V> values()

返回:

a new list of all values (makes a copy)

toString

public String toString()

覆盖:

toString 在类中 Object