InternalThreadLocal (dubbo-all 2.6.10.1 API)

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

```
public class InternalThreadLocal<V>
extends 
```
InternalThreadLocal A special variant of 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 {@see io.netty.util.concurrent.FastThreadLocal} which is in Netty.

构造器概要

构造器
构造器说明

InternalThreadLocal()

方法概要

所有方法静态方法实例方法具体方法
修饰符和类型	方法	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.
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- 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.