Archive for category: Blog

conditionVariableAtomic

The Atomic Boolean

June 21, 2016

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The remaining atomics - in contrast to std::atomic_flag - are partial or full specializations of the…

twoAtomics

Sequential Consistency

June 19, 2016

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The atomics are the base of the C++ memory model. Per default, sequential consistency is applied. The…

BackgroundCpp

The Facebook Group Modernes C++

June 18, 2016

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I created the facebook group Modernes C++. I see one big advantage in this group. I…

spinLockSleep

The Atomic Flag

June 17, 2016

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Atomics guarantee two characteristics. On the one hand, they are atomic, on the other, they provide synchronization…

ConditionVariableVersusTask

Thread Synchronization with Condition Variables or Tasks

June 11, 2016

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In case you use promise and future to synchronize threads, they have much in common with condition variables.…

Overview

C++ Memory Model

June 6, 2016

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Since C++11, C++ has a memory model. It is the foundation for multithreading. Without it, multithreading…

async

The Special Futures

June 6, 2016

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The parent of a thread has to take care of their child. The parent can wait until his child is done or…

promiseFuture

Promise and Future

June 5, 2016

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With std::promise and std::future, you have full control over the task. Full control over the task A…

BackgroundCpp

Modernes C++

June 4, 2016

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This page is the starting point for my blog Modernes C++. A simple overview of my existing and upcoming…

packagedTask

Asynchronous Callable Wrappers

June 3, 2016

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std::packaged_task enables you to write a simple wrapper for a callable, which you can invoke later. std::packaged_task To…

Latest news

std::execution: More SendersDecember 23, 2024 - 10:40 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. I already […]
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 […]