In the field of C++ development, smart pointers are an extremely important mechanism that greatly enhances the safety and convenience of memory management. Among them, shared_ptr is a key member of the smart pointer family, which uses reference counting to allow multiple pointers to share ownership of the same object. When the last shared_ptr pointing … Read more
In C, we often use the functions malloc and free for manual memory allocation and management. However, in C++, two operators, new and delete, are specifically designed to assist programmers in memory allocation and management, significantly simplifying memory management operations, especially for class objects. The new/delete operations are essential and should be learned and mastered. … Read more
Table of Contents Course Objectives 1. Custom malloc/free Hook Functions 1.1 Basics of FreeRTOS Memory Management 1.2 Principles of Hook Function Implementation 1.3 Practical: Implementation of Memory Tracking Hook 2. Memory Fragmentation Monitoring Solutions 2.1 Causes of Memory Fragmentation 2.2 Fragmentation Detection Methods 2.3 Comparison Table of Optimization Strategies Practical Project: Memory Monitoring System 3.1 … Read more
Scan to FollowLearn Embedded Together, learn and grow together This series of articles on FreeRTOS aims to help beginners quickly get started and master the basic principles and usage methods of FreeRTOS while organizing knowledge for themselves. FreeRTOS Quick Start – Initial Exploration of the System FreeRTOS Official Chinese Website is Now Live FreeRTOS Coding … Read more
Follow and star our public account to access exciting content Source: Online materials Key content: ☆ Linux memory organization structure and page layout, causes of memory fragmentation and optimization algorithms. ☆ Various memory management methods in the Linux kernel, memory usage scenarios, and pitfalls in memory usage. ☆ From the principles and structure of memory … Read more
01 Memory Management We need to understand that variables are essentially just abstract names for memory addresses. In statically compiled programs, all variable names are converted to memory addresses at compile time. The machine does not recognize the names we use; it only knows the addresses. Memory usage is one of the important factors to … Read more
1 Blood and Tears: The Tragedy of 30 Years of Memory Management1.1 Dangling Pointers: The Ghostly Code KillerIn 2014, a financial trading system experienced a memory leak in C++ that caused daily trading delays to soar from 200ms to 15 seconds, resulting in a direct loss of 230 million. Post-analysis revealed that an unreleased std::vector … Read more
Learning C++ involves mastering data structures, which are core to the language. Among these, <span><span>raw arrays</span></span> are one of the most fundamental and efficient ways to organize data, serving as the starting point for understanding more complex containers like <span><span>vector</span></span> and <span><span>list</span></span>. Today, we will thoroughly understand raw arrays in C++ and learn how to … Read more
Once a program is running, it becomes a process. Regardless of whether it is in kernel mode or user mode, the process sees a virtual memory space. When accessing specific data, the virtual memory address is first converted to a physical memory address, allowing access to the actual physical memory where this data is stored, … Read more
A comprehensive guide of 26,000 words to thoroughly understand dynamic memory management in C, explained with numerous examples, from beginner to mastery.