Tuning under C# multithreading

1, Atomic operation Let's look at a piece of problem code first /// <summary> /// Gain self increment /// </summary> public static void GetIncrement() { long result = 0; Console.WriteLine("Start calculation"); //10 Concurrent execution Parallel.For(0, ...

Posted by Gorf on Wed, 06 Apr 2022 05:24:31 +0300

RT thread hidden treasure work queue

1. What is a work queue Work queue: we can put things that are not very urgent to deal with into the workqueue for processing. When the system is idle, we will execute the things in the workqueue. The essence of work queue is to open a thread to process the arranged tasks, so there can be no dead cycles in the work queue. Do not use API s that ...

Posted by larissahn on Tue, 05 Apr 2022 23:31:05 +0300

Use of java thread pool

Use of thread pool Labels (space delimited): multithreading Executors tool class (create pool and submit task) Through the tool class, you can create a thread pool Several common thread pool creation methods Create a thread pool through the static method of Executors 1. Create a thread pool of fixed size (it can be used for instantaneous peak ...

Posted by yacaph on Tue, 05 Apr 2022 06:55:54 +0300

Java multithreading -- synchronized keyword continued

From: Ordinary hope   1. synchronized principle In java, each object has only one synchronization lock. This also means that synchronization locks are object dependent.When we call the synchronized method of an object, we get the synchronization lock of the object. For example, synchronized(obj) acquires the synchronization lock of "obj ...

Posted by Roberto on Tue, 05 Apr 2022 05:15:08 +0300

Java 8 asynchronous programming - completable future

Difficulties of asynchronous programming How to implement asynchronous programming gracefully has always been a difficult problem. The usual method of asynchronous programming is to use the callback method, but this method usually embeds the code in the code of the normal process, and when there are multiple layers of nesting, the code is more ...

Posted by lhale on Mon, 04 Apr 2022 02:26:59 +0300

Singleton pattern of JAVA design pattern

1, Introduction to singleton mode 1 mode description Implement one class, only one instantiated object, and provide a global access point 2 role (problem solved) Ensure that there is only one object in a class to reduce the coupling between objects 3 working principle In Java, we operate these classes by using objects (after class ins ...

Posted by yuppicide on Mon, 04 Apr 2022 00:57:50 +0300

The parsing of Java semaphores is all here

Semaphore is a thread synchronization structure used to pass signals between threads to avoid signal loss, or to protect a key area like a lock. Since 5.0, jdk has been used in Java util. The official implementation of semaphore is provided in the concurrent package, so you don't need to implement semaphore yourself. However, it is necessary to ...

Posted by Stunt on Mon, 04 Apr 2022 00:30:22 +0300

Condition interface of Java Concurrent Programming

Part of this article is from the art of Java Concurrent Programming summary Any Java Object has a monitor method, mainly including wait(), wait(long timeout), notify() and notifyAll() methods. These methods cooperate with the synchronized synchronization keyword to realize the wait notification mode. The Condition interface also prov ...

Posted by assonitis on Sun, 03 Apr 2022 07:59:12 +0300

Processes and threads

Processes and threads Today, the computers we use have already entered the era of multi CPU or multi-core, and the operating systems we use are operating systems that support "multi task", which enables us to run multiple programs at the same time, or decompose a program into several relatively independent subtasks, so that multiple ...

Posted by stenk on Sun, 03 Apr 2022 02:46:08 +0300

Basic knowledge of Java multithreading: introduction to concurrent container with source code

Introduction to concurrent container Because the synchronization container synchronizes the synchronized added by almost all methods, which ensures the safety of threads, but the cost is to seriously reduce the concurrency performance. When multiple threads compete for the container, the throughput is seriously reduced. Java5.0 began to redes ...

Posted by linkskywalker on Fri, 01 Apr 2022 23:22:15 +0300