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C++ Core Guidelines: Template Definitions

December 3, 2018

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Template definitions deal with guidelines that are specific to a template implementation. This means,…

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C++ Core Guidelines: Surprises with Argument-Dependent Lookup

November 28, 2018

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There is, in particular, one rule left to template interfaces which are quite interesting: T.47: Avoid…

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C++ Core Guidelines: Regular and SemiRegular Types

November 22, 2018

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The topic for today is quite important when you create your type: Regular and SemiRegular types. Here…

Meeting

Meeting Embedded and Meeting C++ 2018

November 14, 2018

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Last week I was at two conferences in Berlin: Meeting Embedded and Meeting C++. Here are my impressions…

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C++ Core Guidelines: Template Interfaces

November 8, 2018

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This post is about template interfaces due to the C++ core guidelines: "...a critical concept", because…

contract

C++ Core Guidelines: Pass Function Objects as Operations

November 1, 2018

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An interface is a contract between a user and an implementer and should, therefore, be written with great…

CLibrary

I’m Proud to Present: The C++ Standard Library including C++14 & C++17

October 31, 2018

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Based on my book "The C++ Standard Library" educative.io created an interactive course. You can have…

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C++ Core Guidelines: Definition of Concepts, the Second

October 25, 2018

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Let me continue with the rules for defining concepts in the guidelines. The first of the three remaining…

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A new Thread with C++20: std::jthread

October 19, 2018

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One of the participants in my CppCon 2018 workshop asked me: "Can a std::thread be interrupted?". No,…

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C++ Core Guidelines: Rules for the Definition of Concepts

October 12, 2018

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Although rule T.11 states: Whenever possible, use standard concepts you sometimes have to define your…

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C++ Core Guidelines: Rules for the Usage of Concepts

October 4, 2018

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We will get concepts with high probability in C++20. Here are the rules from the C++ core guidelines…

CppCon 2018

September 24, 2018

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This was the first time I was at the CppCon, and it was an overwhelming experience for me. Pre-conference…

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Data-Parallel Types – A First ExampleJune 25, 2025 - 4:01 pm
After providing a theoretical introduction to the new C++ 26 feature in my last article, “Data-Parallel Types (SIMD),” I would like to follow up today with a practical example. The following introductory example is from the experimental implementation of the SIMD library. This functionality has been fully adopted in the C++ 26 draft under the […]
Data-Parallel Types (SIMD)June 16, 2025 - 10:24 am
The data-parallel types (SIMD) library provides data-parallel types and operations on them. Today, I want to take a closer look at this. Before diving into the new library, I would like to take a moment to discuss SIMD. SIMD Vectorization refers to the SIMD (Single Instruction, Multiple Data) extensions of a modern processor’s instruction set. […]
Read-copy-update (RCU)June 2, 2025 - 9:54 am
Read-copy-update is strong in multithreading environments where a data structure is read almost exclusively but rarely written. First of all, what is RCU? The excellent Wikipedia page on Read-copy-update provides a good introduction: In computer science, read-copy-update (RCU) is a synchronization mechanism that avoids the use of lock primitives while multiple threads concurrently read and […]
atomic<shared_ptr<>> by Oliver SchädlichMay 19, 2025 - 9:11 am
This blog article is an experiment. A few days ago, I received the following email (translated from German) from Oliver Schädlich (oliver.schaedlich@gmail.com). If, as I hope, this article sparks a discussion, I will be happy to summarize it in my last article. Please send an email to: Rainer.Grimm@ModernesCpp.de. I just read your latest article on […]
Hazard Pointers in C++26May 5, 2025 - 11:12 am
Hazard pointers provide garbage collection in C++ and solve the ABA problem. First of all. What is a hazard pointer? Proposal P2530R3 gives a nice explanation: A hazard pointer is a single-writer multi-reader pointer that can be owned by at most one thread at any time. Only the owner of the hazard pointer can set […]
A Lock-Free Stack: A Hazard Pointer Implementation Explained IIApril 7, 2025 - 11:11 am
In my last post, I started to explain a hazard pointer implementation: A Lock-Free Stack: A Hazard Pointer Implementation Explained I. Today, I will continue to explain the implementation. The Retire List The retire list has the public member functions isInUse, addNode, and deleteUnusedNodes. Additionally, it has the inner class RetireNode, an atomic member of […]