This content is derived from the book edited by Teacher Xia Liqin, titled “Linux Network Operating System Configuration and Management”, intended for the teaching of first-year vocational college students. Let’s work hard together for those who want to learn seriously! 1. Course Introduction 1.What is an Operating System An Operating System (Operating System, abbreviated as … Read more
Introduction: A Long-standing Dilemma for Many Programmers If you want to use the familiar GCC compiler to compile a C/C++ project on Windows, a quick search online will immediately present you with two “similar” options: MinGW and Cygwin. Both allow you to run commands like gcc, g++, and gdb on Windows, but which one should … Read more
Note: Please indicate the source when reprinting, all rights reserved.Note: This is based on my own understanding,if it conflicts with your principles and ideas, please forgive me and do not criticize. Environment Description Linux 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Introduction 1. IPC – Inter-Process Communication 2. UNIX … Read more
A semaphore is a mechanism used for inter-process synchronization and mutual exclusion, widely applied in multithreaded programming and operating systems. Semaphores can control access to shared resources, ensuring that multiple processes or threads can orderly use these resources, avoiding race conditions. 1. What is a Semaphore? ✅ Definition: A semaphore is a synchronization mechanism used … Read more
Follow and star our public account for direct access to exciting content Content 1. Basic Concepts of Multithreading 1. What is a Thread? A thread is the smallest unit of execution in a program, representing an independent execution path within a process. A process can contain multiple threads that share the process’s memory space (such … Read more
Recently, while assisting a friend with a small tool project, I encountered a requirement: to embed a local HTTP service so that the frontend can access and control the backend logic. It sounds simple, but if we want to implement a minimal HTTP server from scratch using standard C++ network programming without relying on existing … Read more
What is NuttX?NuttX (officially known as Apache NuttX) is a real-time operating system (RTOS) that is “small in size but high in quality,” emphasizing compatibility with POSIX/ANSI standards while also incorporating classic APIs from Unix and VxWorks. It can run on various MCUs, including 8-bit, 32-bit, and 64-bit architectures, and even comes with a built-in … Read more
First Encounter with bareboxHey, I’ve been experimenting with embedded booting recently, and I was captivated by a project called barebox. It is not just a simple follower of U-Boot; it inherits the spirit of U-Boot while also drawing on the design philosophy of the Linux kernel. Written in C and managed with kbuild/Kconfig for configuration, … Read more
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
The Ultimate Weapon for Embedded Developers In the field of embedded systems, the bootloader is a critical bridge connecting hardware and the operating system. As the modern successor to U-Boot, Barebox (formerly known as “Das U-Boot v2”) is redefining the possibilities of embedded bootloaders with its innovative design philosophy and developer-friendly features. It not only … Read more