com.alibaba.dubbo.common.threadlocal

类 InternalThreadLocal<V>

java.lang.Object

com.alibaba.dubbo.common.threadlocal.InternalThreadLocal<V>

public class InternalThreadLocal<V>
extends Object

InternalThreadLocal A special variant of ThreadLocal that yields higher access performance when accessed from a InternalThread.

Internally, a InternalThread uses a constant index in an array, instead of using hash code and hash table, to look for a variable. Although seemingly very subtle, it yields slight performance advantage over using a hash table, and it is useful when accessed frequently.

This design is learning from FastThreadLocal which is in Netty.

构造器概要

构造器

构造器和说明
InternalThreadLocal()

方法概要

方法

限定符和类型	方法和说明
static void	destroy()
V	get() Returns the current value for the current thread
void	remove() Sets the value to uninitialized; a proceeding call to get() will trigger a call to initialValue().
void	remove(InternalThreadLocalMap threadLocalMap) Sets the value to uninitialized for the specified thread local map; a proceeding call to get() will trigger a call to initialValue().
static void	removeAll() Removes all InternalThreadLocal variables bound to the current thread.
void	set(V value) Sets the value for the current thread.
static int	size() Returns the number of thread local variables bound to the current thread.

从类继承的方法 java.lang.Object

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

构造器详细资料

InternalThreadLocal

public InternalThreadLocal()

方法详细资料

removeAll

public static void removeAll()

Removes all InternalThreadLocal variables bound to the current thread. This operation is useful when you are in a container environment, and you don't want to leave the thread local variables in the threads you do not manage.

size

public static int size()

Returns the number of thread local variables bound to the current thread.

destroy

public static void destroy()

get

public final V get()

Returns the current value for the current thread

set

public final void set(V value)

Sets the value for the current thread.

remove

public final void remove()

Sets the value to uninitialized; a proceeding call to get() will trigger a call to initialValue().

remove

public final void remove(InternalThreadLocalMap threadLocalMap)

Sets the value to uninitialized for the specified thread local map; a proceeding call to get() will trigger a call to initialValue(). The specified thread local map must be for the current thread.