Do kids lose points when writing C code after learning C++? Parents are also confused: Are C and C++ alternatives or complementary? Today, we will break down complex programming logic using two very intuitive life metaphors, making it easy for both parents to guide and children to learn independently! 1. Core Positioning: C is the … Read more
In-Depth Analysis of the Linux Slab Allocator: From Principles to Practice 1 Overview of the Linux Slab Allocator 1.1 What is the Slab Allocator The slab allocator is an efficient small memory allocation mechanism in the Linux operating system kernel, specifically designed for managing the allocation and release of kernel objects. This mechanism was originally … Read more
Hello everyone, this is IoT Heart. I have always wanted to write an article related to Linux memory leaks for two reasons: memory leaks are a common issue in software development, and many beginners do not know how to troubleshoot Linux memory leak problems; over the years, I have mastered many debugging methods for memory … Read more
In 2025, when Cloudflare announced its AI inference workflow achieving over 5000 concurrent tasks on a single node, the entire industry was left wondering: Why Rust? This system programming language, renowned for its memory safety, is quietly revolutionizing the field of AI workflow orchestration. While the Python-dominated LangGraph ecosystem is convenient, it exposes a communication … Read more
In the field of high-performance programming, data copying is one of the key bottlenecks affecting system throughput. In traditional IO operations, data often needs to be transferred multiple times between user space and kernel space, accompanied by redundant copying overhead.The core goal of zero-copy technology is toreduce or eliminate unnecessary data copying, significantly improving the … Read more
In the process of embedded software development, it is generally true that more time is spent on testing than on coding, often at a ratio of 3:1 (or even more). This ratio decreases as your programming and testing skills improve, but regardless, software testing is crucial for most people. Many years ago, a developer asked … Read more
Hello everyone, I am a programmer who loves to share. I am happy to share my experiences and understanding from my work. -begin- Today’s topic (Huawei embedded interview questions) focuses on memory management, which is one of the core challenges in embedded software development. Please answer the following questions: 1. What are the common causes … Read more
The Linux system consists of the following core components: Linux Kernel DefinitionThe kernel is the core of the operating system, responsible for managing hardware resources (such as CPU, memory, disk, network, etc.) and providing basic services to applications. Functions Process Management: Creating, scheduling, and terminating processes. Memory Management: Allocating and reclaiming memory. File System Management: … Read more
Introduction: Why is DMA-BUF Needed? In modern heterogeneous computing systems, multiple processing units (CPU, GPU, ISP, video codecs, etc.) need to share data efficiently. Traditional data sharing methods involve frequent memory copies, which can incur significant performance overhead in scenarios such as high-resolution video processing and complex graphics rendering. DMA-BUF was developed to provide a … Read more
First Impressions of Pointers: Mysterious Messengers of Memory In the wonderful world of C language, pointers are considered the most mysterious and powerful entities, acting like hidden messengers that control the flow of data. When first encountering pointers, many people find their concept confusing, feeling that they are both abstract and elusive. But don’t worry, … Read more