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TimelineCpp20

C++20: More Details to the Spaceship Operator

June 16, 2020

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The compiler performs cleverly when it generates all six comparison operators. Ultimately, you get intuitive…

TimelineCpp20

C++20: The Three-Way Comparison Operator

June 11, 2020

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The three-way comparison operator <=> is often just called the spaceship operator. The spaceship…

TimelineCpp20

C++20: Further Open Questions to Modules

June 2, 2020

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So far, I have written in my last four posts the basics you should know about modules in C++20. Only…

C++20: Structure Modules

May 29, 2020

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When your module becomes bigger, you want to divide its functionality into manageable components. C++20…

C++20: Module Interface Unit and Module Implementation Unit

May 18, 2020

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Thanks to the module interface unit and implementation unit, you can separate the interface from the…

C++20: A Simple math Module

May 12, 2020

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Modules are one of the four prominent features of C++20. They overcome the restrictions of header files…

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…

Latest news

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 […]
A Lock-Free Stack: A Hazard Pointer Implementation Explained IMarch 24, 2025 - 11:37 am
In my last post, I presented a hazard pointer implementation: A Lock-Free Stack: A Hazard Pointer Implementation. Today, I will explain the implementation. MyNode is a class template, parametrized by the type it holds: data. MyNode models the concept Node. template <typename T> concept Node = requires(T a) { {T::data}; { *a.next } -> std::same_as<T&>; […]
A Lock-Free Stack: A Hazard Pointer ImplementationMarch 10, 2025 - 11:42 am
Hazard Pointers solve all issues of the previous implementation: A Lock-Free Stack: A Simple Garbage Collector. From one Week to two Weeks You may have already noticed. I will change my blog publishing frequency from one to two weeks in the future. Writing a post using your voice is exceptionally exhausting and time-consuming. Hazard Pointers […]
A Lock-Free Stack: A Simple Garbage CollectorFebruary 24, 2025 - 11:58 am
My next lock-free stack includes a simple garbage collector. I discussed the concurrent execution of more than one topAndPush call is a Race Condition. I can safely delete a node if not more than one topAndPush call is executing concurrently. This observation is crucial for solving this memory leak issue: I store removed nodes on […]
A Lock-Free Stack: Atomic Smart PointerFebruary 17, 2025 - 11:47 am
The easiest way to solve this memory leak issue from the last post is to use a std::shared_ptr. Atomic Smart Pointer There are two ways to apply atomic operations on a std::shared_ptr: In C++11, you can use the free atomic functions on std::shared_ptr. With C++20, you can use atomic smart pointers. C++11 Using atomic operations […]