Java from multithreading to concurrent programming -- Runnable Callable

Preface` Last time, we first understood the concepts of threading, process and multithreading, and learned to implement multithreading by inheriting the Thread class This section will help you understand Realize the multithreading effect by implementing the Runnable interfaceImplement the Callable interface to realize the multithreadi ...

Posted by JJBlaha on Mon, 18 Apr 2022 00:29:44 +0300

Detailed explanation of ArrayBlockingQueue source code

Blocking queue Insert method: Add (E): return true after adding successfully, throw IllegalStateException if failedOffer (E): return true after success. If the queue is full, return false.Put (E): insert the element at the end of this queue. If the queue is full, it will be blocked all the time Delete method: remove(Object o): remove the ...

Posted by dgny06 on Sun, 17 Apr 2022 07:30:08 +0300

CountDownLatch synchronization counter instructions

CountDownLatch concept CountDownLatch is a synchronization tool class, which is used to coordinate the synchronization between multiple threads or talk about the communication between threads (rather than being used as mutual exclusion). CountDownLatch enables a thread to wait for other threads to complete their work before continuing execution ...

Posted by Ruzzas on Fri, 15 Apr 2022 16:03:37 +0300

Thread safe - ThreadLocal

Thread safe - ThreadLocal preface Shared resources are accessed by multiple threads at the same time, which may be unsafe. Thread safety has always been a very important thing. Failure to properly handle the problem of thread safety may lead to errors and even difficult to reproduce and check. Common solutions include defining immutable vari ...

Posted by winsonlee on Fri, 15 Apr 2022 06:22:39 +0300

HarmonyOS Hongmeng development tutorial based on little bear school - kernel

Review time: it seems very far away! (not regularly) 1, CMSIS-RTOS2 interface Cortex microcontroller software interface standard and Cortex-M series RTOS interface provide standardized API access to kernel or peripherals for software components requiring RTOS. More API References: https://arm-software.github.io/CMSIS_5/RTOS2/html/index.htm ...

Posted by natbrazil on Thu, 14 Apr 2022 11:40:19 +0300

The actual combat proves the system call of two locks ReentrantLock and synchronized in java

Times make heroes: intelligence and diligence are the preconditions for success. There are many smart and diligent people in the world. What is really important is to follow the trend! background A large number of articles on the Internet say that the synchronized lock in Java is a heavyweight lock. Because the system call is used, it will ...

Posted by loquela on Thu, 14 Apr 2022 10:59:40 +0300

Win32 multithreading -- asynchronous IO(overlapped IO)

I File Handle fired for asynchronous IO 1.1 # Win32 IO operation function There are three basic functions in Win32 to perform I/O     CreateFile()     ReadFile()     WriteFile() There is no other function to close the file. Just call CloseHandle. CreateFile can be used to open various resources, including (but not limited to): - > files ( ...

Posted by jamest on Thu, 14 Apr 2022 04:44:27 +0300

Explain the basic implementation of TCP and UDP programs and the development of multithreaded concurrent server (Java)

1, What is network programming The so-called network programming is to realize the communication between hosts in the network 1. In the whole communication process, there are generally two kinds of endpoints: server and client 2. There are two modes of program development around the server and client: C/S structure (two sets of programs nee ...

Posted by coolfool on Mon, 11 Apr 2022 19:35:01 +0300

python multithreading learning

    Two modules commonly used in Python 3 threads are: _ thread (obsolete)Threading (recommended)   Thread module Python 3 uses two standard libraries_ thread and threading provide support for threads. _ thread provides low-level, original threads and a simple lock. Compared with threading module, its function is still relatively limited. ...

Posted by sharmeen on Sun, 10 Apr 2022 23:01:43 +0300

java.util.concurrent toolkit exploration - stubborn bronze***

preface This article continues to explore JUC. The main points are callableForkJoinBlocking queue 1, callable Callable is one of the three ways to implement threads in java, and it is also the most commonly used interface to implement threads in enterprises. Let's first look at how to use callable, and then discuss something else No ...

Posted by Fitzlegend on Sun, 10 Apr 2022 21:11:53 +0300