Overview and Core Concepts of Linux Workqueue Part 1: Overview and Core Concepts of Workqueue 1.1 What is Workqueue? Imagine you are a busy restaurant manager. When customers place their orders, some tasks need to be completed immediately (like pouring water for the guests), similar to the interrupt handling in the Linux kernel, which requires … Read more
Content Hello everyone, I am Bug Jun~Recently, I came across a very interesting term “callback hell”, which refers to endless callback functions that ultimately lead to stack overflow and deadlock. The manifestation of this is multiple layers of nested function pointer callbacks, resulting in poor code readability and maintenance difficulties.Below is a simple example simulating … Read more
1. Introduction In embedded development, the design of drivers is mostly about implementing data flow links. Simply put, a driver is a “data mover”, transferring data from the application layer to the hardware interface for sending, and moving data from the hardware interface back to the specified space in the application layer. Of course, a … Read more
Content Hello everyone, I am Bug Jun~Recently, I came across a very interesting term “callback hell”, which refers to endless callback functions that ultimately lead to stack overflow and deadlock. The manifestation of this is multiple layers of nested function pointer callbacks, resulting in poor code readability and maintenance difficulties.Below is a simple example simulating … Read more
In embedded system development, AT commands are widely used to control peripheral modules such as cellular communication modules, Wi-Fi modules, and Bluetooth devices due to their simple structure, strong readability, and ease of debugging. As system complexity increases, traditional synchronous blocking AT command processing methods can no longer meet the real-time demands of multitasking and … Read more
Click the aboveblue text to follow us In the field of embedded system development, logging systems are like black boxes in the digital world, carrying key information about the system’s operational status. The traditional printf debugging method, while simple and easy to use, exposes significant issues such as low efficiency, high resource consumption, and poor … Read more
In .NET development, calling third-party HTTP APIs is a common task. However, in practical applications, we often encounter issues such as request timeouts or connection disconnections. These problems can arise from various reasons, such as network latency, slow server responses, or unreasonable client timeout settings. This article will delve into the causes of these issues … Read more
Hello everyone, I am the Mixed Bag Master. This time, I have organized some important theoretical concepts in embedded software development. 1. What is Stack Watermark Detection? Stack watermark detection is a technique for dynamically monitoring task stack usage. During task initialization, the entire stack space is filled with a specific identification pattern (e.g., <span>0xDEADBEEF</span>). … Read more
Business cooperation WeChat: 2230304070 Learning and communication:PHP Technical Communication WeChat Group 2025 JetBrains universal activation code & account supports the latest version https://www.mano100.cn/thread-1942-1-1.html In PHP, due to its traditional synchronous blocking model, implementing parallel asynchronous handling of HTTP requests is not as straightforward as in other languages (such as Go or Node.js). However, it is … Read more