Java review并发编程原理源码剖析的相关内容

Java Review - 并发编程_ThreadPoolExecutor原理&源码剖析

线程池主要解决两个问题一是当执行大量异步任务时线程池能够提供较好的性能。在不使用线程池时，每当需要执行异步任务时直接new一个线程来运行，而线程的创建和销毁是需要开销的。线程池里面的线程是可复用的，不需要每次执行异步任务时都重新创建和销毁线程。二是线程池提供了一种资源限制和管理的手段，比如可以限制线...

Java Review - 并发编程_ConcurrentLinkedQueue原理&源码剖析

概述JDK中提供了一系列场景的并发安全队列。总的来说，按照实现方式的不同可分为阻塞队列和非阻塞队列，阻塞队列使用锁实现非阻塞队列则使用CAS非阻塞算法实现ConcurrentLinkedQueueConcurrentLinkedQueue是线程安全的无界非阻塞队列，其底层数据结构使用单向链表实现，对...

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Java Review - 并发编程_ScheduledThreadPoolExecutor原理&源码剖析

概述Java Review - 并发编程_ThreadPoolExecutor原理&源码剖析我们复习了Java中线程池ThreadPoolExecutor的原理，ThreadPoolExecutor只是Executors工具类的一部分功能。下面来介绍另外一部分功能，也就是Scheduled...

Java Review - 并发编程_ThreadPoolExecutor原理&源码剖析（下）

首先来分析第一部分的代码6 // 6 检查队列是否只在必要的时候为空 if (rs >= SHUTDOWN && ! (rs == SHUTDOWN && firstTask == null && ...

Java Review - 并发编程_ThreadPoolExecutor原理&源码剖析（上）

Java Review - 并发编程_DelayQueue原理&源码剖析

概述DelayQueue并发队列是一个无界阻塞延迟队列，队列中的每个元素都有个过期时间，当从队列获取元素时，只有过期元素才会出队列。队列头元素是最快要过期的元素。类图结构由该图可知DelayQueue内部使用PriorityQueue存放数据，使用ReentrantLock实现线程同步。另外，队列里...

Java Review - 并发编程_PriorityBlockingQueue原理&源码剖析

概述PriorityBlockingQueue是带优先级的无界阻塞队列，每次出队都返回优先级最高或者最低的元素。其内部是使用平衡二叉树堆实现的，所以直接遍历队列元素不保证有序。默认使用对象的compareTo方法提供比较规则，如果你需要自定义比较规则则可以自定义comparators。类图结构由图可...

Java Review - 并发编程_ArrayBlockingQueue原理&源码剖析

概述Java Review - 并发编程_LinkedBlockingQueue原理&源码剖析介绍了使用有界链表方式实现的阻塞队列LinkedBlockingQueue，这里我们继续来研究使用有界数组方式实现的阻塞队列ArrayBlockingQueue的原理。类图结构由该图可以看出，Arr...

Java Review - 并发编程_LinkedBlockingQueue原理&源码剖析

概述Java Review - 并发编程_ConcurrentLinkedQueue原理&源码剖析介绍了使用CAS算法实现的非阻塞队列ConcurrentLinkedQueue，下面我们来介绍使用独占锁实现的阻塞队列LinkedBlockingQueue类图结构首先看一下LinkedBloc...

Java Review - 并发编程_ConcurrentLinkedQueue原理&源码剖析（下）

addadd操作是在链表末尾添加一个元素，其实在内部调用的还是offer操作’\ /** * Inserts the specified element at the tail of this queue. * As the queue is unbounded, this method will ...

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