1 Deadlock std::mutex mtM,mtN;int M = 0;int N = 0; void threadA() { std::lock_guard guardM(mtM); std::lock_guard guardN(mtN); M++; N–;} void threadB() { std::lock_guard guardN(mtN); std::lock_guard guardM(mtM); M–; N++;} This is a typical example that can lead to a deadlock. The classic two-phase locking issue is immediately apparent, but when more locks are involved, the problem … Read more
Concurrent Programming in Rust: A Detailed Explanation of Core Methods for Data Sharing Between Threads In modern computing, multithreaded programming is key to enhancing application performance and achieving high concurrency. However, data sharing between threads has always been a significant challenge in concurrent programming, fraught with pitfalls such as data races and deadlocks. The Rust … Read more
Sometimes when writing C++, you may find that knowledge points you have learned are easily forgotten after a while. For example, does <span>std::move</span> actually empty the object? Does the iterator become invalid when a <span>vector</span> is resized? These questions can seem abstract when looking at the documentation, but a few lines of code can immediately … Read more
ChartDirector: A Powerful C++ Chart Library ChartDirector is a powerful C++ chart library developed by Advanced Software Engineering Ltd. It is widely used in various types of applications, including desktop applications, web applications, console applications, and background processing. ChartDirector offers an extremely rich variety of chart types, covering almost all common data visualization needs, making … Read more
Effect Diagram Hello everyone! Today I would like to introduce a particularly useful Python project – the Process Manager. This tool helps us view the processes running on the computer and perform some operations on them, such as terminating processes. The entire code structure is very clear, layer by layer, from initialization to interface construction, … Read more
Follow and star our public account for direct access to exciting content Content 1. Basic Concepts of Multithreading 1. What is a Thread? A thread is the smallest unit of execution in a program, representing an independent execution path within a process. A process can contain multiple threads that share the process’s memory space (such … Read more
In network programming, TCP (Transmission Control Protocol) is one of the most commonly used protocols. It provides a reliable, connection-oriented communication method, ensuring that packets arrive in order and are not lost. Python offers powerful network programming capabilities through its built-in socket module, allowing us to easily implement TCP communication. Basic Concepts Before we start … Read more
1. Core C++ Language Constructors and Virtual Functions Why can’t constructors be declared as virtual functions? Can static functions be virtual functions? The role of explicit and its usage scenarios. Memory Management The difference between new and malloc (type safety, constructor calls) Strategies to avoid dangling pointers and memory leaks The size of an empty … Read more
1. Introduction In modern multithreaded systems, performance bottlenecks caused by data races and resource locking are common challenges for developers. Traditional mutexes (such as std::mutex) can resolve data races but also introduce performance overhead and deadlock risks. The drawbacks of locking mechanisms are mainly reflected in: Performance Overhead: Lock operations can lead to thread blocking, … Read more
Based on the x64 architecture, assembly language and operating system fundamentals are used to implement a simple operating system kernel in assembly language, demonstrating multitasking, multithreading, locks, and thread synchronization in a multiprocessor environment. Is this possible? I believe no one would think this is a simple task. In fact, if you want to make … Read more