Thread Local Storage in C Language Concurrency: pthread_key_create In multithreaded programming, managing data sharing between threads is an important issue. Especially in C language, due to its direct memory manipulation characteristics, using data appropriately can become complex. In this article, we will delve into “Thread Local Storage” and how to implement this feature using the … Read more
Hello everyone, I am Xiaokang. Today, let’s talk about a lighter topic: implicit type conversion in C. Have you ever experienced this: the code looks fine, the compilation goes smoothly, but it runs into inexplicable errors? After some debugging, you find out it was a “small data type” issue? Congratulations, you are now part of … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join our technical exchange QQ group with a note of 【Public Account】 for faster approval 1. Concept of Libraries A library (Library) is a collection of pre-compiled code (functions, classes, data, etc.) that can be shared and reused by multiple programs. The core … Read more
The issue of endianness is not new in embedded development. As developers, we have a clear understanding of the endianness problem in embedded development, and here I will provide a simple summary of this issue. Endianness refers to the order of bytes in memory. There is a wealth of information available online regarding endianness, so … Read more
GDB (GNU Debugger) – A Powerful Tool for Database Kernel Developers Welcome to the world of database kernel development! Today, we will learn about a very important tool that acts like a doctor’s stethoscope or a detective’s magnifying glass, helping us delve into the internal workings of programs and uncover hidden bugs. This tool is … Read more
【Problem】Given 4 billion unique unsigned int integers that are not sorted. Given a number, how can we quickly determine if this number exists among those 4 billion numbers? 1 billion is 9 zeros, so 4 billion is 4000000000. Our instinctive thought for a solution is to use a for loop to find the equal number, … Read more
Embedded Development in C: I2C Communication Protocol Introduction I2C (Inter-Integrated Circuit) is a widely used serial communication protocol, commonly utilized for communication between microcontrollers and various peripherals. It was developed by Philips in the early 1980s, primarily for short-distance, low-speed data transmission. I2C offers advantages such as simplicity, flexibility, and multi-master support, making it well-suited … Read more
1. Introduction Recently, various products in our department have encountered issues caused by memory leaks, specifically manifested as board resets after continuous operation for several days due to memory exhaustion. On one hand, memory leak issues are considered low-level errors, and their oversight in production can have severe consequences; on the other hand, since memory … Read more
Source: Internet 1. A pipeline can achieve maximum efficiency only when it is filled with instructions, executing one instruction per clock cycle (referring only to single-cycle instructions). If a jump occurs in the program, the pipeline will be cleared, requiring several clock cycles to refill. Therefore, minimizing the use of jump instructions can enhance program … Read more
Learning programming involves not only knowing that there are errors in the program and how to correct them, but also understanding where the errors are and why the computer produces such erroneous outputs. The behavior of computers is always explainable; one must understand the underlying execution logic rather than simply correcting the program. This is … Read more