Tag Archive for: Atomics

Posts

localVariable

Multithreaded: Summation with Minimal Synchronization

September 7, 2016

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Until now, I've used two strategies to summate a std::vector. First, I did the whole math in one thread…

CalculateWithLoop

Single Threaded: Summation of a Vector

September 3, 2016

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What is the fastest way to add the elements of a std::vector? This a question that I will pursue in the…

gcc

Thread-Safe Initialization of a Singleton

August 23, 2016

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There are a lot of issues with the singleton pattern. I'm aware of that. But the singleton pattern is…

sukzessiveOptimierungRelaxedSemantikEng

Ongoing Optimization: Relaxed Semantics with CppMem

August 20, 2016

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With the relaxed semantics, we have no synchronizations and ordering constraints on atomic operations. Relaxed…

undefinedEng

Ongoing Optimization: A Data Race with CppMem

August 18, 2016

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But we can improve and further improve the acquire-release semantics of the last post. Why should x be…

sukzessiveOptimierungSequenzielleKonsistenzEng

Ongoing Optimization: Acquire-Release Semantics with CppMem

August 16, 2016

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With the acquire-release semantics, we break the sequential consistency. In the acquire-release semantics,…

sukzessiveOptimierungSequenzielleKonsistenzEng

Ongoing Optimization: Sequential Consistency with CppMem

August 13, 2016

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With atomic data types, you can tailor your program to your needs and optimize it. But now we are in…

CppMemUeberblickNumbers

CppMem – An Overview

July 30, 2016

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CppMem is an interactive tool for exploring the behavior of small code snippets of the C++ memory model.…

relaxed

Relaxed Semantics

July 27, 2016

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The relaxed semantics is the end of the scale. The relaxed semantic is the weakest of all memory models…

acquireOperation

Acquire-Release Fences

July 21, 2016

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Acquire and release fences guarantee similar synchronization and ordering constraints as atomics with…

Latest news

C++20: Query Calendar Dates and Ordinal DatesApril 22, 2024 - 9:53 am
The extended chrono library makes it relatively easy to ask for the time duration between calendar dates. This post is the sixth in my detailed journey through the chrono extension in C++20: Query Calendar Dates Without further ado, the following program queryCalendarDates.cpp queries a few calendar dates. // queryCalendarDates.cpp #include <chrono> #include <iostream> int main() […]
C++20: Displaying and Checking Calendar DatesApril 15, 2024 - 9:20 am
I created calendar dates in my last post, “C++20: Creating Calendar Dates,” and I will display and check them today. This post is the fifth in my detailed journey through the chrono extension in C++20: Displaying Calendar Dates Thanks to std::chrono::local_days or std::chrono::sys_days, you can convert calendar dates to a local or a system std::chrono::time_point. […]
C++20: Creating Calendar DatesApril 8, 2024 - 10:51 am
In this post, I will dive deeper into calendar dates and create them. If this post is too overwhelming for you, read my previous ones: C++20 supports constants and literals to make using calendar-date types more convenient. Constants and Literals for Calendar Types Let me start with the constants for std::chrono::weekday, and std::chrono::month. std::chrono::Monday std::chrono::Thuesday […]
C++20: Time of DayMarch 25, 2024 - 10:08 am
This new data type std::chrono::hh_mm_ss in C++20 stands for the time of day. Time of Day std::chrono::hh_mm_ss is the duration since midnight split into hours, minutes, seconds, and fractional seconds. This type is typically used as a formatting tool. First, the following table gives you a concise overview of std::chrono::hh_mm_ss instance tOfDay. Depending on the […]
C++20: Basic Chrono Terminology with Time Duration and Time PointMarch 18, 2024 - 10:34 am
Today, I continue my journey through the basic types with time durations and time points. Time Durations C++14 introduced helper types such as std::chrono::seconds for time durations and corresponding time literals such as 5s. C++20 added new helper types. The following table shows all for completeness. Often the time duration std::chrono::days and the calendar date […]
My Next Mentoring Program: “Concurrency with Modern C++” startsMarch 11, 2024 - 11:24 am
My next mentoring program, “Concurrency with Modern C++”, starts on the 15th of March. Registration is open.