[Practical Java high concurrency programming design 4] Arrays can also be unlocked: AtomicIntegerArray, java concurrent programming practice pdf
In addition to providing basic data types, JDK also prepares arrays and other composite structures for
ObjectiveJava Multi-threaded classification has written 21 multi-threaded articles, 21 Articles of a lot of content, personally think, learning, the more content, the more miscellaneous knowledge, the more need to carry out a profound summary, so as
Java. util. concurrent package source code reading 11 ThreadPoolExecutor, threadpoolexecutor
First, let's look at the execute method of ThreadPoolExecutor. This method can reflect what happened after a Task is added to the thread pool:
Public void
Atomic atomic operations in the development of C++11Nicol's BlogOriginal https://taozj.org/2016/09/C-11%E5%BC%80%E5%8F%91%E4%B8%AD%E7%9A%84Atomic%E5%8E%9F%E5%AD%90%E6%93%8D%E4%BD%9C/ThemeC + +Atomic operations are often used in multi-threaded
(Thank you @ jd Liu Xiaoyang? Contribution. For more articles, see his blog: mengmeng for a living.) Original article link: the reason why LongAdder source code parsing, which is more efficient than AtomicLong, came into contact with AtomicLong is
In "Java Concurrency Programming Combat"-"J.U.C": CLH queue lock mentioned, Aqs inside the CLH queue is a transformation of CLH synchronization lock. It is mainly reformed from two aspects: the structure of node and the mechanism of node waiting. In
LockLocks and semaphores are very familiar to most people, especially common mutexes. There are many kinds of locks, mutual exclusion locks, spin locks, read and write locks, sequential locks, and so on, here are just a few things to see, Mutual
ConcurrentHashMap source code analysisCocurrentHashMap uses HashTable to implement concurrent hash search and storage by locking the entire table. CocurrentHashMapt can implement the same functions through Segment, but it is more efficient. In jdk1.6
Sun. misc. Unsafe opens the door to Java for you. You can use it to do a lot of things that Java does not allow. It is very useful in some very special scenarios. 99% of the time, you should avoid using it, but in some rare cases, only it can solve
1. AQS Introduction
AQS is the basis of Java concurrent class libraries. It provides a basic framework based on FIFO queues that can be used to build locks or other related synchronization devices. The synx (hereinafter referred to as synx) uses an
In "Java Concurrency Programming Combat"-"J.U.C": CLH queue lock mentioned, Aqs inside the CLH queue is a transformation of CLH synchronization lock.It is mainly reformed from two aspects: node structure and node waiting mechanism. In the structure,
Turn from: Http://www.tuicool.com/articles/VRVFZb PrefaceMulti-threaded classification of 21 articles, more than 21 articles, a lot of content, personal thinking, learning, content, the more miscellaneous knowledge, the more need to carry out a
AQS needs to solve the following problems:
1. Lock status. How can I ensure a secure update in the case of concurrency?
2. Where can I keep the lock when the current thread cannot get it? AQS is placed in a queue.
3. How to improve efficiency?
AQS
1. What is the use of multithreading?A question that may seem a little ridiculous to many people: I can use multithreading, and what's the use of it? In my opinion, this answer is even more nonsense. The so-called "know the reason why", "will use"
Often used in concurrent programming is this Reentrantlock class, where threads acquire locks and release locks. There is also a synchronized, commonly used to control the acquisition of multi-threaded lock mechanism.Let's write a simple
Summary of Java Multithreading issuesObjectivePersonally, learning, the more content, the more miscellaneous knowledge, the more need to carry out a profound summary, so as to remember the profound, the knowledge into their own. This article mainly
Reprint please indicate source: http://www.cnblogs.com/lighten/p/7520808.html1. PrefaceThis chapter describes one of the most frequent concurrent collection classes used by Concurrenthashmap, which described HashMap and Hashtable earlier, pointing
Locksupport OverviewBasic thread blocking primitives for creating locks and other synchronization classes. The underlying threading block primitives used to create locks and other synchronization classes. This is the explanation in Java doc, and the
Ehcache is now the most popular Java open-source caching framework, simple to configure, well-structured, powerful, and initially known to start with Hibernate's cache. On-line Chinese Ehcache materials to simple introduction and configuration
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