Archive for year: 2016

BjarneStroustrup

Requirements of Embedded Programming

September 28, 2016

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Bjarne Stroustrup's FAQ makes it crystal clear. One of the design goals for C++11 was to make C++ even…

untilAndForEng

Sleep and Wait

September 26, 2016

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The new time library is an important component of the threading interface. As well, as threads, locks,…

clockProperties

The Three Clocks

September 22, 2016

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A clock consists of a starting point and a time tick. C++ offers with std::chrono::system_clock, std::chrono::steady_clock,…

timeSinceEpoch

Time Duration

September 20, 2016

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Time duration is the difference between two time points. It will be measured in time ticks. Time…

timepoint

Time Point

September 17, 2016

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The starting point (epoch) and the additional time duration define the time point. It consists of two…

ZeitPunktDauerGeberEng

The Time Library

September 14, 2016

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A blog dealing with multithreading in modern C++ but not writing about the new time library is incomplete.…

SingleThreadedAdditionEng

My Conclusion: Summation of a Vector in three Variants

September 11, 2016

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After I've calculated in three different ways the sum of a std::vector I want to draw my conclusions. The…

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…

synchronizeWithLock

Multithreaded: Summation of a Vector

September 5, 2016

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My goal is to sum up all elements of a vector. I used in the last post a single thread. In this post,…

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…

Latest news

std::execution: SenderDecember 16, 2024 - 11:25 am
std::execution offers three types of senders: factories, adapters, and consumers. I’ll take a closer look at these today. Most of the following content is from proposal P2300R10. I will try to represent it more concisely. Sender Factory A sender factory is an algorithm that takes no senders as parameters and returns a sender. execution::schedule execution::sender […]
std::execution: Composition of SendersDecember 9, 2024 - 10:25 am
Most sender adaptors are composable using the pipe operator. Let me start with a simple example of composition with the pipe operator. Instead of the nested function calls call1(call2(input)) you can write call1 | call2(input) or even: input | call1 | call2 Function composition Okay, this example was straightforward. Let’s do something more complicated. Proposal […]
std::execution: Inclusive ScanDecember 2, 2024 - 10:30 am
Inclusive scan solves problems related to range queries, such as calculating the sum of a range of elements in an array. It is also used in range minimum queries and various other algorithms. Before I present the asynchronous inclusive scan, I introduce the inclusive scan, aka prefix sum. Prefix Sum In computer science, the prefix […]
std::execution: Asynchronous AlgorithmsNovember 25, 2024 - 9:06 am
std::execution supports many asynchronous algorithms for various workflows. Presenting proposal P2300R10 is not easy. First, it is very powerful, and second, it is very long. Therefore, I concentrate on specific aspects of the proposal. What are the priorities of this proposal? Priorities The terms execution resource, execution agent, and scheduler are essential for the understanding […]
std::executionNovember 18, 2024 - 9:03 am
std::execution, previously known as executors or Senders/Receivers, provides “a Standard C++ framework for managing asynchronous execution on generic execution resources“. (P2300R10) Side Note Change of plans. My original plan was to present the C++26 library after the core language. However, the implementation status of the library is not good enough. Therefore, I decided to continue […]
C++26 Core Language: Small ImprovementsNovember 4, 2024 - 8:34 am
There are more small improvements in the C++26 language, which you should know. static_assert extension First, here’s the syntax of static_assert in C++11: static_assert(compile time predicate, unevaluated string) With C++26, the string can be a user-defined type having the following properties: static_assert can now be used with a format string. Here’s a nice example from […]