Chapter 26 并发介绍

本章介绍为单个运行进程提供的新抽象：thread。线程共享地址空间。

进程虚拟化

Chapter 4 进程

Q：如何提供有许多CPU的假象？

简介

This class provides thread-local variables. These variables differ from their normal counterparts in that each thread that accesses one (via its get or set method) has its own, independently initialized copy of the variable. ThreadLocal instances are typically private static fields in classes that wish to associate state with a thread (e.g., a user ID or Transaction ID).

CountDownLatch

简介

A synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes.

什么是线程池

Thread Pool是一种基于池化思想管理线程的工具，经常出现在多线程程序中。

简介

ReentrantReadWriteLock分为读锁和写锁两个实例，读锁是共享锁，可被多个读线程同时使用，写锁是独占锁。持有写锁的线程可以继续获取读锁，反之不行。