In the embedded field, embedded real-time operating systems are becoming increasingly widely used. Using an embedded real-time operating system (RTOS) can more reasonably and effectively utilize CPU resources, simplify application software design, shorten system development time, and better ensure the system’s real-time performance and reliability. FreeRTOS is a mini real-time operating system kernel. As a … Read more
In the field of computer science, the concept of a stack is likely familiar to many. The familiarity and understanding of stacks primarily stem from two aspects. One aspect is that a stack is a type of data structure characterized by the Last In, First Out (LIFO) principle. The other aspect is that a stack … Read more
Author | Evrone Planner | Xiao Zhi Rust is an ambitious project by the Mozilla Foundation, touted as the successor to C and C++. For a long time, some fundamental issues in C/C++ have remained unresolved, such as segmentation faults, manual memory management, risks of memory leaks, and unpredictable compiler behavior. The birth of Rust … Read more
Hello everyone, I am Xiaokang. Today, let’s talk about a seemingly sophisticated yet super practical concept in C language—flexible arrays. Don’t be intimidated by the name; what does “flexible” mean? Simply put, it refers to an array with variable size and undefined length. Mastering this technique can significantly enhance your programming skills! ⚡ Friendly Reminder: … Read more
In the process of microcontroller programming, if a designer can master multiple programming languages simultaneously, then that designer is undoubtedly a very talented individual. However, mastering assembly, C, and C++ at the same time is quite challenging, and many beginners struggle significantly while learning just one of these languages. This article specifically compiles insights from … Read more
1. Introduction: The Core Power of Dynamic Sequences The list, as the most flexible mutable sequence type in Python, is a core tool for handling dynamic data collections. Unlike tuples, lists support real-time modifications, dynamic expansions, and a rich set of built-in methods, making them the preferred structure for scenarios such as data collection, algorithm … Read more
Whether to disable Transparent Huge Pages (THP) in virtualized environments should be considered comprehensively based on the type of virtual machine workload, features of the virtualization platform, and requirements for performance stability. The following are recommendations and detailed justifications for different scenarios: 1. Core Reasons for Disabling THP in Virtualized Environments Memory Management Conflicts: Balloon … Read more
Guests | Zhang Yu, Duan Xiongchun, Song Muchun, Xie Yongji, Deng Liang Author | Ling Min With the rapid evolution of the internet, many star products shine under the halo of the times; but behind the noise, there is a group of people quietly safeguarding the stability of the internet world. Today, we introduce this … Read more
🌟 1. Program Startup: From “Forking” to “Transforming” Forking After entering a command, the Shell instantlyforks a child process, where the parent and child share resources, but throughCopy-On-Write (COW) optimization—only when data is modified do they “split”, saving time and effort! Transforming (execve) The child process calls<span>execve</span> to replace its genes: the kernel parses the … Read more
Source | AuthorizedTransferred from Xuanyuan’s Programming Universe (ID: xuanyuancoding)Author | Xuanyuan Wind One weekend, someone in my reverse learning group from scratch threw out a C language-related question: First, think about what this code will output after running? I encountered this question a few years ago in a Huawei interview. The code is very short; … Read more