Java synchronized atomic 的相关内容

Java并发编程中的四个关键字：ThreadLocal、Volatile、Synchronized和Atomic

在现代计算机架构下，为了充分利用CPU多核心的优势，我们需要在应用程序中使用并发编程技术。然而，并发编程在保证线程安全性和正确性方面也存在许多挑战和难点。本文将详细介绍Java并发编程中的四个关键字：ThreadLocal、Volatile、Synchronized和Atomic，分别介绍它们的作用...

Java：从单线程计数器到多线程数据同步synchronized和原子类Atomic

目录使用单线程使用多线程使用多线程 + synchronized使用多线程 + 原子类AtomicLong使用单线程单线程修改计数器的值，没有发生问题，每次运行结果都是10000，不过程序耗时较长package com.example;/** * 计数器 */class Counter { &nbs...

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【小家java】原子操作你还在用Synchronized？Atomic、LongAdder你真有必要了解一下了（下）

原子更新基本类型这个使用案例就略了，相信大家再使用他们已经0阻碍了原子更新数组当你操作的共享是个数组的话，就可以用这个很方便解决问题了 public static void main(String[] args) { AtomicIntegerArray atomicArray = new Atom...

【小家java】原子操作你还在用Synchronized？Atomic、LongAdder你真有必要了解一下了（中）

CAS失败—什么都不做这个我就不再画图，说白了就是Z线程进来后，发现预期值和内存值不一样的时候，就什么都不做，就CAS失败，直接结束掉线程了。这个有些场景也会这么去干CAS为什么是原子的呢？有的人可能会问：CAS明明就有多部操作，但什么就是原子的呢？解释如下：...

【小家java】原子操作你还在用Synchronized？Atomic、LongAdder你真有必要了解一下了（上）

前言写这篇博文的原因，是因为我今天在看阿里的规范手册的时候（记录在了这里：【小家java】《阿里巴巴 Java开发手册》读后感—拥抱规范，远离伤害），发现了有一句规范是这么写的：如果是count++操作，使用如下类实现: AtomicInteger count =...

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