In modern computing, multithreaded programming is a common technique that allows programs to execute multiple tasks simultaneously, thereby improving efficiency and responsiveness. In C, we can use the POSIX Threads (pthread) library to implement multithreaded programming. This article will introduce the fundamentals of multithreading in C and demonstrate with example code. 1. What is Multithreading? … Read more
Thread Synchronization and Mutex Mechanisms in C Language In multithreaded programming, multiple threads may access shared resources simultaneously, which can lead to data inconsistency and unpredictable program behavior. To avoid these issues, we need to use thread synchronization and mutex mechanisms. This article will detail several commonly used synchronization and mutex mechanisms in C language, … Read more
In C, a signal is an asynchronous event used to notify a program that a certain condition has occurred. Signals can be generated by the operating system, hardware, or the program itself. Common signals include process termination and illegal memory access. In this article, we will introduce how to capture and handle these signals in … Read more
Follow the WeChat public account “ML_NLP” and set it as a “starred“, for heavy content delivered to you first! Source | Zhihu Author | Tom Cat X Link | https://zhuanlan.zhihu.com/p/367122807 Editor | Machine Learning Algorithms and Natural Language Processing WeChat Public Account This article is for academic sharing only. If there is any infringement, please … Read more
Implementing Multiprocessing in C: Process Creation and Management In modern operating systems, multiprocessing is a common technique that allows programs to execute multiple tasks simultaneously. The C language provides robust support for implementing multiprocessing, primarily through the <span>fork()</span> system call to create new processes. This article will detail how to implement multiprocessing in C, including … Read more
In modern computing, multithreaded programming is a common technique that allows programs to execute multiple tasks simultaneously, thereby improving efficiency and responsiveness. The C language provides robust multithreading support through the POSIX threads (pthread) library. This article will detail how to create and manage threads in C, as well as how to synchronize them. 1. … Read more
This article is a lab note for Lab7 of the MIT6.S081 Operating Systems course. The task is to simulate kernel process switching by implementing a user-level thread switching functionality. Additionally, I will introduce how xv6 achieves process switching by examining the source code. Lab7 address: https://pdos.csail.mit.edu/6.828/2020/labs/thread.html My lab records: https://github.com/yibaoshan/xv6-labs-2020/tree/thread Before starting the experiment, you … Read more
Implementing Peterson’s Algorithm for Mutual Exclusion in C Language After studying the section on process mutual exclusion, I thought I would try to implement it using user-level multithreading in C, which led to this article. Complete Code Peterson’s algorithm combines the single flag method and the double flag method to achieve true mutual exclusion for … Read more
01 Use Structures to Store Common Variables in AdvanceWhen writing preprocessing and postprocessing functions, certain variables, such as the shape of the model input tensor and count, are often used multiple times. If these values are recalculated in each processing function, it will increase the computational load during deployment. In such cases, consider using a … Read more
In multithreaded programming, there are two issues to pay attention to: one is data races, and the other is memory execution order. What is a data race? First, let’s look at what a data race is and what problems it can cause. #include <iostream> #include <thread> int counter = 0; void increment() { for (int … Read more