Package org.apache.dubbo.common.utils

Class ConcurrentHashMapUtils

java.lang.Object

org.apache.dubbo.common.utils.ConcurrentHashMapUtils

public class ConcurrentHashMapUtils
extends Object

ConcurrentHashMap util

Constructor Summary

Constructors

Constructor	Description
ConcurrentHashMapUtils()

Method Summary

Modifier and Type	Method	Description
static <K, V> V	computeIfAbsent(ConcurrentMap<K,V> map, K key, Function<? super K,? extends V> func)	A temporary workaround for Java 8 ConcurrentHashMap#computeIfAbsent specific performance issue: JDK-8161372.

Methods inherited from class java.lang.Object

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

Constructor Details

ConcurrentHashMapUtils

public ConcurrentHashMapUtils()

Method Details

computeIfAbsent

public static <K,
V> V computeIfAbsent(ConcurrentMap<K,V> map,
 K key,
 Function<? super K,? extends V> func)

A temporary workaround for Java 8 ConcurrentHashMap#computeIfAbsent specific performance issue: JDK-8161372.

See Also:

• https://bugs.openjdk.java.net/browse/JDK-8161372