Concepts - Placeholders

C++11 has with auto unconstrained placeholders. You can use concepts in C++20 as constrained placeholders. What seems at first glimpse not so thrilling is for me the decisive quantum leap. C++ templates will become an easy to use C++ feature.

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Task Blocks

Task blocks use the well-known fork-join paradigm for the parallel execution of tasks.

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Tags: C++20
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Transactional Memory

Transactional memory is based on the idea of a transaction from the database theory. Transactional memory shall make the handling with threads a lot easier. That for two reasons. Data races and deadlocks disappear. Transactions are composable.

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Tags: C++20
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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
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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 get in C++20 latches and barriers in three variations: std::latch, std::barrier, and std::flex_barrier.

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Tags: C++20
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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
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And the Winners are

Mads Ravn, Antonis Polykratis, Martin Mancuska, David Farago, Edgar Rojas, and Adrian Javaloy.

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