Archive for month: December, 2020

TimelineCpp20CoreLanguage

Performance Comparison of Condition Variables and Atomics in C++20

December 19, 2020

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After the introduction to std::atomic_flag in my last post, Synchronization with Atomics in C++20, I…

C++20

I’m Proud to Present my New Book: C++20

December 17, 2020

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I'm proud to present the early release of my book to C++20 on LeanPub. The book is 50 % done and has…

TimelineCpp20CoreLanguage

Synchronization with Atomics in C++20

December 12, 2020

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Sender/receiver workflows are pretty common for threads. In such a workflow, the receiver is waiting…

TimelineCpp20CoreLanguage

Atomic References with C++20

December 8, 2020

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Atomics receives a few essential extensions in C++20. Today, I start with the new data type std::atomic_ref. The…

C++20

Looking for Proofreaders for my New Book: C++20

December 5, 2020

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I'm looking for proofreaders for my new book "C++20". The book serves two purposes. It provides you the…

TimelineCpp20CoreLanguage2

Bit Manipulation with C++20

December 3, 2020

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This post concludes my presentation of library features in C++20. Today I am writing about the class…

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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 […]
A Lock-Free Stack: A Complete ImplementationFebruary 10, 2025 - 3:01 pm
My last lock-free stack implementation was incomplete. It only supported push operations. Let’s change this. The following paragraph about sequential consistency is optional. You can easily ignore it. Sequential Consistency In my examples, I use the default memory ordering: sequential consistency. The reason is simple. Sequential consistency provides the strongest guarantees of all memory ordering […]
My Next Mentoring Program: “Generic Programming (Templates) with C++” startsFebruary 4, 2025 - 4:51 pm
My next mentoring program, “Embedded Programming with Modern C++,” starts on January 31st. Registration is open. Here are more details. Embedded Programming with Modern C++ The mentoring program consists of 16 stations. You have to invest at least 3 hours per week for each one. This means the program takes four months, and you can […]
A Lock-Free Stack: A Simplified ImplementationFebruary 3, 2025 - 10:37 am
Today, I continue my mini story about lock-free data structures. General Considerations From the outside, the caller’s responsibility (application) is to protect the data. From inside, the data structure is responsible for protecting itself. A data structure that protects itself so a data race cannot appear is called thread-safe. First, what general considerations must you […]