ThreadLocal结构

class ThreadThreadLocal.ThreadLocalMap threadLocals = null;ThreadLocal.ThreadLocalMap inheritableThreadLocals = null;

value

Entry[]数组

Entry对象

ThreadLocal

ThreadLocalMap

内部结构

Key是指向ThreadLocal的一个弱引用

entry[3]

class ThreadLocal

线程包含属性

Thread

entry[2]

entry[4]

entry[0]

key

WeakReference<ThreadLocal>

class Entry extends WeakReference<ThreadLocal<?>>

entry[5]

class ThreadLocalMap

entry[1]

代码结构