Coroutines

Coroutines are functions that can suspend and resume their execution while keeping their state. The evolution in C++20 goes one step further.

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Tags: C++20
Comments 2Views: 49912

Latches And Barriers

Latches and barriers are simple thread synchronisation mechanism which enables it that some threads wait until a counter becomes zero. We will presumably in C++20 get latches and barriers in three variations: std::latch, std::barrier, and std::flex_barrier.

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Tags: C++20
Comments 5Views: 17679

std::future Extensions

Tasks in the form of promises and futures have in C++11 an ambivalent reputation. At on hand, they are a lot easier to use than threads or condition variables; at the other hand, they have a great deficiency. They can not composed. C++20 will overcome this deficiency.

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Tags: C++20, tasks
Comments 4Views: 18832

Atomic Smart Pointers

C++20 will have atomic smart pointers. To be exactly, we will get a std::atomic_shared_ptr and a std::atomic_weak_ptr. But why? std::shared_ptr and std::weak_ptr are already thread-safe. Sort of. Let me dive into the details.

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Tags: C++20
Comments 5Views: 63454

Parallel Algorithms of the Standard Template Library

The idea is quite simple. The Standard Template has more than 100 algorithms for searching, counting, and manipulating of ranges and their elements. With C++17, 69 of them are overloaded and a few new are added. The overloaded and new algorithms can be invoked with a so-called execution policy. By using the execution policy, you can specify whether the algorithm should run sequential, parallel, or parallel and vectorised.

 

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Tags: C++17
Comments 4Views: 38597

Multithreading with C++17 and C++20

Forecasts about the future are difficult. In particular, when they are about C++20. Nevertheless, I will take a look into the crystal ball and will write in the next posts about, what we will get with C++17  and what we can hope for with C++20.

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Tags: C++20, C++17
Comments 4Views: 101313

Sleep and wait

The new time library is an important component of the threading interface. As well threads, locks, condition variables as future have an understanding of time. All four have in common that they can sleep, wait or block until a time point or for a time duration.

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Tags: time
Comments 2Views: 19310

The Three Clocks

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

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Tags: time
Comments 3Views: 100966

Time Duration

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

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Tags: time
Comments 3Views: 16164

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