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Modernes C++ goes Worldwide

May 11, 2020

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I'm happy to announce that I offer English and German online seminars. In addition to my German…

C++20: The Advantages of Modules

May 8, 2020

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Modules are one of the four big features of C++20: concepts, ranges, coroutines, and modules. Modules…

janus

Face-to-Face Seminars and Online Seminars are different

May 6, 2020

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Face-to-face seminars and online seminars are different. Both forms have their pros and cons, and none…

C++20: Thread Pools with cppcoro

May 1, 2020

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This post is the third and final post in my miniseries to cppcoro. cppcoro is a library of coroutine…

C++20: Powerful Coroutines with cppcoro

April 23, 2020

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I gave in my last post, "C++20: Coroutines with cppcoro", a basic introduction to the coroutines library…

C++20: Coroutines with cppcoro

April 16, 2020

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The cppcoro library from Lewis Baker gives you what C++20 doesn't: a library of C++ coroutine abstractions…

educative

Four Voucher for Educative

April 10, 2020

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educative.io gave me four vouchers for which they will give a learner 3-month access to all Educative…

C++20: Thread Synchronization with Coroutines

April 10, 2020

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It's a typical requirement for thread management to synchronize them. One thread prepares, in this case,…

C++20: An Infinite Data Stream with Coroutines

April 3, 2020

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My story to coroutines in C++20 goes on. Today I dive deep into the coroutines framework to create an…

C++20: More Details to Coroutines

March 27, 2020

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After I gave you in my last post (C++20: Coroutines - A First Overview) my first impression of coroutines,…

cpp core guidelines 16b

Looking for Proofreaders for my new Book: C++ Core Guidelines

March 24, 2020

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I'm looking for proofreaders for my new book "C++ Core Guidelines". The crucial idea of the book is to…

C++20: Coroutines – A First Overview

March 20, 2020

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C++20 provides four features that change how we think about and write modern C++: concepts, the ranges…

Latest news

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 […]