std::experimental::parallel::seq, std::experimental::parallel::par, std::experimental::parallel::par_vec

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Execution support library (C++26)

Technical specifications

Symbols index

External libraries

 

Experimental

Technical Specification

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

Library fundamentals 2 (library fundamentals TS v2)

Library fundamentals 3 (library fundamentals TS v3)

Extensions for parallelism (parallelism TS)

Extensions for parallelism 2 (parallelism TS v2)

Extensions for concurrency (concurrency TS)

Extensions for concurrency 2 (concurrency TS v2)

Concepts (concepts TS)

Ranges (ranges TS)

Reflection (reflection TS)

Mathematical special functions (special functions TR)

Experimental Non-TS

Pattern Matching

Linear Algebra

std::execution

Contracts

2D Graphics

 

Extensions for parallelism

Execution policies

parallel::execution_policy

parallel::sequential_execution_policyparallel::parallel_execution_policyparallel::parallel_vector_execution_policy

parallel::seqparallel::parparallel::par_vec

Parallel algorithms

Parallel exceptions

parallel::exception_list

Parallelized version of existing algorithms

New algorithms

parallel::for_eachparallel::for_each_n

parallel::reduce

parallel::exclusive_scan

parallel::inclusive_scan

parallel::transform_reduce

parallel::transform_exclusive_scan

parallel::transform_inclusive_scan

 

Defined in header <experimental/execution_policy>
constexpr sequential_execution_policy seq{};		(parallelism TS)
constexpr parallel_execution_policy par{};		(parallelism TS)
constexpr parallel_vector_execution_policy par_vec{};		(parallelism TS)

seq, par and par_vec are instances of the execution policy types sequential_execution_policy, parallel_execution_policy and parallel_vector_execution_policy respectively. They are used to specify the execution policy of parallel algorithms - i.e., the kinds of parallelism allowed.