dynamic memory management

The Importance of Using the Static Modifier in Embedded Development

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The Importance of Using the Static Modifier in Embedded Development

In embedded development, adding the <span>static</span> modifier before variables and functions is a very important practice that primarily serves three core purposes: limiting scope, extending lifespan, and controlling memory allocation. This is particularly crucial for resource-constrained embedded systems that require high reliability. Here is a detailed explanation: 1. Using <span>static</span> for Variables a) Static Local … Read more

What Are the Differences Between str and String in Rust?

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What Are the Differences Between str and String in Rust?

In Rust, <span>str</span> and <span>String</span> are two core types for handling text data, and they have essential differences in memory management, ownership, and mutability. The table below summarizes their core differences for quick understanding: Feature <span>String</span> <span>str</span> (<span>&str</span>) Ownership Owns the data No ownership, it is a borrowed reference Mutability Mutable Immutable Storage Location Data … Read more

Exploring Pointers in C Language (Part 5) — Linked Lists: A Perfect Interpretation of Pointer Art

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Exploring Pointers in C Language (Part 5) — Linked Lists: A Perfect Interpretation of Pointer Art

After a few busy days, I haven’t had the chance to focus on this topic. Today, on my business trip back to Beijing, I reflected on it and thought it was necessary to back up the linked list. 1. What is a Linked List? A linked list is a data structure composed of a series … Read more

Common GDB Commands for Linux

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Common GDB Commands for Linux

1. Common GDB Commands 1. Basic Commands 1.1. Start Debugging gdb test.elf 1.2. View Disassembly # Set style to view disassembly set disassembly-floavor intel disassemble # Disassemble current instruction disassemble $pc, $pc+0x100 1.3. View Functions info functions 1.4. Print Addresses # Print variable address Print function address print &var print test_function 1.5. GDB Remote Connection … Read more

Linux Performance Optimization Fundamentals: Make Your System Run Like the Wind

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Linux Performance Optimization Fundamentals: Make Your System Run Like the Wind

As a blogger with years of experience in the Linux field, I have seen too many people stumble over performance issues in Linux systems. Have you ever encountered a scenario where you set up a Linux server with great enthusiasm, only to find that the website responds so slowly that it makes you question your … Read more

Why Redis Doesn’t Use C Language Strings and Instead ‘Reinvented the Wheel’

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Why Redis Doesn't Use C Language Strings and Instead 'Reinvented the Wheel'

Follow us, bookmark us, and join us every day at 7:30 for daily Java content sharing. Technical Analysis The ‘Four Sins’ of C Language Native Strings The C language does not have a true “string” type. Its so-called string is simply a character array (<span>char*</span>) terminated by a null character<span>\0</span>. This simple design leads to … Read more

C++ Interview Questions and Answers

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C++ Interview Questions and Answers

First Interview 1. Self-Introduction Sample Answer Briefly introduce your personal background, technology stack, and project experience, highlighting the parts relevant to the position. For example: “I mainly use XXXXXX to develop XXXXX, familiar with XXXX, and have worked on XX projects, focusing on solving XXXXX problems.” Analysis Keep it around 1 minute. Emphasize skills that … Read more

Discussing C Programming: The Relationship Between C Language and Memory

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Discussing C Programming: The Relationship Between C Language and Memory

The association between memory and data types is the core logic of the underlying design of the C language, and their relationship can be summarized as: Memory provides physical storage space, while data types are the logical abstraction and access rules for that storage space. The following analysis will unfold from three dimensions: memory characteristics, … Read more

Essential Knowledge Points for C Language Beginners: Summary of One-Dimensional Array Usage Techniques

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Essential Knowledge Points for C Language Beginners: Summary of One-Dimensional Array Usage Techniques

“From today on, study hard and make progress every day” Repetition is the best method for memory; spend one minute each day to remember the basics of C language. “Series of 100 Essential Knowledge Points for C Language Beginners“ The following notes finally enter the practical series, which is also the most important and difficult … Read more

A Quick Start Guide to FreeRTOS

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A Quick Start Guide to FreeRTOS

Scan to FollowLearn Embedded Together, learn together, grow together The FreeRTOS introductory series aims to help beginners quickly get started and master the basic principles and usage of FreeRTOS while organizing their own knowledge. For ease of reading, the “Quick Start to FreeRTOS” series of articles has been compiled. The list of articles is as … Read more