The Phaser class provides a method that is executed each time the phaser changes the phase. It's the onAdvance() method. It receives two parameters: the number of the current phase and the number of registered participants; it returns a Boolean value…

One of the most complex and powerful functionalities offered by the Java concurrency API is the ability to execute concurrent-phased tasks using the Phaser class. This mechanism is useful when we have some concurrent tasks divided into steps. The Pha…

The Executor framework provides the ThreadPoolExecutor class to execute Callable and Runnable tasks with a pool of threads, which avoid you all the thread creation operations. When you send a task to the executor, it's executed as soon as possible, a…

原创:转载需注明原创地址 https://www.cnblogs.com/fanerwei222/p/11867895.html Java线程--Phaser使用, 代码里头有详细注释: package concurrent.phaser; import java.util.concurrent.Phaser; /** * 比赛阶段器 */ public class GamePhaser extends Phaser { /** * 当一个阶段的所有线程都到达时 , 执行该方法, 此时 phas…

The Java concurrency API provides a synchronizing utility that allows the synchronization of two or more threads in a determined point. It's the CyclicBarrier class. This class is similar to the CountDownLatch class, but presents some differences tha…

Usually, when you develop a simple, concurrent-programming application in Java, you create some Runnable objects and then create the corresponding Thread objects to execute them. If you have to develop a program that runs a lot of concurrent tasks, t…

One of the advantages of the Executor framework is that you can run concurrent tasks that return a result. The Java Concurrency API achieves this with the following two interfaces: Callable: This interface is similar to the Runnable interface. It has…

1. java.util.concurrent概述 JDK5.0以后的版本都引入了高级并发特性,大多数的特性在java.util.concurrent包中,是专门用于多线并发编程的,充分利用了现代多处理器和多核心系统的功能以编写大规模并发应用程序.主要包含原子量.并发集合.同步器.可重入锁,并对线程池的构造提供了强力的支持. 原子量,是定义了支持对单一变量执行原子操作的类.所有类都有get和set方法,工作方法和对volatile变量的读取和写入一样. 并发集合,是原有集合框架的补充,为多线程并…

part1 从AtomicInteger開始 从相对简单的Atomic入手(java.util.concurrent是基于Queue的并发包.而Queue.非常多情况下使用到了Atomic操作.因此首先从这里開始).非常多情况下我们仅仅是须要一个简单的.高效的.线程安全的递增递减方案. 注意,这里有三个条件:简单,意味着程序猿尽可能少的操作底层或者实现起来要比較easy:高效意味着耗用资源要少.程序处理速度要快.线程安全也非常重要,这个在多线程下能保证数据的正确性.这三个条件看起来比較简单,可是…

线程池任务执行结果 这一节来探讨下线程池中任务执行的结果以及如何阻塞线程.取消任务等等. 1 package info.imxylz.study.concurrency.future;2 3 public class SleepForResultDemo implements Runnable {4 5     static boolean result = false;6 7     static void sleepWhile(long ms) {8         try {9      …