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ClassIdioms

The Null Object Pattern

February 12, 2023

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A Null Object encapsulates a do nothing behavior inside an object. It is often pretty comfortable to…

ClassIdioms

Value Objects

February 5, 2023

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A value object is a small object whose equality is based on state, but not identity. Typical value objects…

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20 Days Left: Early Bird Price for my Mentoring Program “Design Patterns and Architectural Patterns with C++”

February 4, 2023

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When you book it before 24/02/2023, you will get a 33% discount. But let me first present my mentoring…

ClassIdioms

Regular Types

January 29, 2023

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The concept of a regular type goes back to the creator of the Standard Template Library (STL) Alexander…

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The Lack of Training Culture: An Employer must support their Employees

January 22, 2023

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Our software industry has a significant Lack of Training Culture. In my last article, I wrote that "Learning…

classes

The Rule of Zero, or Six

January 22, 2023

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The rule of zero, or six, is one of the advanced rules in modern C++. I wrote in my current book "C++…

GeneralIdioms

Argument-Dependent Lookup and the Hidden Friend Idiom

January 16, 2023

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Argument-Dependent Lookup (ADL), also known as Koenig Lookup, is a set of "magical" rules for the lookup…

GeneralIdioms

Partial Function Application

January 8, 2023

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Partial Function Application is a technique in which a function binds a few of its arguments and returns…

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The Lack of Training Culture: Four Signs

January 2, 2023

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Our software industry has a significant Lack of Training Culture. What makes this Lack of Training Culture…

cpp

An Interview that went Viral

December 29, 2022

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In August, I gave an interview which caused many comments. Now, is the right time to publish my thoughts. I…

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What Mentees say About my Mentoring

December 26, 2022

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RG E Cover M2 DPAC 720x720 2022 11 27

Early Bird Price for my Mentoring Program “Design Patterns and Architectural Patterns with C++”

December 26, 2022

/

When you book it before 24/02/2023, you will get a 33% discount. But let me first present my mentoring…

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 […]