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Explain the AQS source code hand in hand 1, Overview This article will take ReentrantLock as an example to show you the source code of AQS. In fact, it is not difficult. The following is a small case of fair lock. You can run and feel it yourself. The following will take you to read the source code bit by bit. If you look at it carefully, you ...

Next blog https://blog.csdn.net/qq_43605444/article/details/121568416?spm=1001.2014.3001.5501 8. 4 common saturation strategies When the queue in the thread pool is full and the thread pool has reached the maximum number of threads, the thread pool will pass the task to the saturation policy for processing. These policies implement the Reject ...

1, ReentrantLock in JUC 1. Limitations of synchronized Synchronized is a built-in keyword in java, which provides an exclusive locking method. The synchronized acquisition and release locks are implemented by the jvm. Users do not need to display the released locks, which is very convenient. However, synchronized also has some limitations, su ...

2, J.U.C 1. * AQS principle 1. General Its full name is AbstractQueuedSynchronizer, which is the framework of blocking locks and related synchronizer tools characteristic: The state attribute is used to represent the state of resources (exclusive mode and shared mode). Subclasses need to define how to maintain this state and control how ...

JUC common classes It refers to the class under the import java.util.concurrent package, which is usually used to solve the problem of multi-threaded coordination lock and derived ReentrantLockSecurity classes of various containers: CopyOnWriteArrayList, ConcurrentHashMapUnsafe collection to safe collection: Collections.synchronizedLis()... ...

Abstractqueuedsynchronizer (AQS): The JDK concurrency package (package name: java.util.concurrent, hereinafter referred to as JUC) provides many tool classes for concurrent operations, such as ReentrantLock, CountDownLatch, etc. The foundation of these concurrency utility classes is abstractqueuedsynchronizer *AQS maintains a shared resource ...

1, Principle of Atomic atomic class:          Atomic atomic operation class is implemented based on lockless CAS + volatile, and all methods in the class are decorated with final to further ensure thread safety. The specific implementation of CAS algorithm lies in the Unsafe class. All methods of Unsafe ...

JUC Silicon Valley JUC Video 1.Summary The difference between threads and processes Processes are the basic unit of program running, and a program running is a process. Threads are the basic unit of cpu scheduling and share memory 1.1 JUC juc is short for the java.util.courrent toolkit and appeared after jdk1.5 1.2 Thread State ...

Multithreading advanced = JUC concurrent programming 1. What is JUC JUC is short for java.util.concurrent. To sum up in Chinese, JUC means java Concurrent Programming toolkit. The essence of concurrent programming is to make full use of CPU resources. 2. Threads and processes Process: it is a single sequential control process in program e ...