compare cas

Original: CAs in Java JAYXU no Czech pathPrior to JDK 5, the Java language was guaranteed to be synchronized by the Synchronized keyword, which would result in a lockThe lock mechanism has the following issues:(1) Under the multi-thread competition,

First introduce some optimistic lock and pessimistic lock:Pessimistic lock: Always assume the worst case, every time to take the data when they think others will change, so every time when the data are locked, so that other people want to take this

Java Day one article June 21 First introduce some optimistic lock and pessimistic lock:Pessimistic lock: Always assume the worst case, every time to take the data when they think others will change, so every time when the data are locked, so that

Https://www.cnblogs.com/qjjazry/p/6581568.html2600433554963791First introduce some optimistic lock and pessimistic lock:Pessimistic lock: Always assume the worst case, every time to take the data when they think others will change, so every time

First introduce some optimistic lock and pessimistic lock:Pessimistic lock: Always assume the worst case, every time to take the data when they think others will change, so every time when the data are locked, so that other people want to take this

CAS is a modern operating system, to solve the problem of concurrency is an important means, recently in the Eureka to see the source code. Many CAS operations were encountered. Today we will review the CAs in Java in a systematic way. Read this

Read a bunch of articles, and finally the principle of Java CAs in-depth analysis clearly. Thanks to Google's powerful search, take this sarcasm Baidu, rely on Baidu what all learn! Reference Documentation: Http://www.blogjava.net/xylz/archive/2010/

The Java.util.concurrent package is built entirely on CAS and will not have this package without CAs. The importance of CAs is visible. CAS Cas:compare and swap, translated into comparisons and exchanged. In Java.util.concurrent package, a kind of

Reference Documentation: Http://www.blogjava.net/xylz/archive/2010/07/04/325206.html Http://blog.hesey.net/2011/09/resolve-aba-by-atomicstampedreference.html Http://www.searchsoa.com.cn/showcontent_69238.htm http://ifeve.com/atomic-operation/ Http://

Prior to JDK 5, the Java language was guaranteed to be synchronized by the Synchronized keyword, which would result in a lockThe lock mechanism has the following issues:(1) Under the multi-thread competition, the locking and release lock will lead