Extensions for parallelism, version 2

 

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)

Diagnostics library

Memory management library

Metaprogramming library(C++11)

General utilities library

Containers library

Iterators library

Ranges library(C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library(C++17)

Concurrency support library(C++11)

Execution control 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 v2

Parallel exceptions
exception_list
Additional execution policies
execution::vector_policy	execution::unsequenced_policy
Algorithms
induction reductionreduction_plusreduction_minusreduction_multiplies	reduction_bit_andreduction_bit_orreduction_bit_xorreduction_minreduction_max	for_loopfor_loop_stridedfor_loop_nfor_loop_n_strided
execution::no_vec
execution::ordered_update_t
Task blocks
task_block
task_cancelled_exception
define_task_blockdefine_task_block_restore_thread
Data-parallel vectors

 

The C++ Extensions for Parallelism Version 2, ISO/IEC TS 19570:2018 defines the following new components for the C++ standard library:

Parallel exceptions

Defined in header <experimental/exception_list>
exception_list	exceptions raised during parallel executions (class)

Execution policies

Defined in header <experimental/execution_policy>
unsequenced_policyvector_policy	execution policy types (class)
unseqvec	global execution policy objects (constant)

Data-Parallel Types

simd (parallelism TS v2)	data-parallel vector type (class template)
simd_mask (parallelism TS v2)	data-parallel type with the element type bool (class template)

Feature test macros

Defined in header <experimental/task_block>
__cpp_lib_experimental_parallel_task_block	a value of at least 201711 indicates that the task block functionality is supported (macro constant)
Defined in header <experimental/execution>
__cpp_lib_experimental_execution_vector_policy	a value of at least 201711 indicates that the vector and wavefront policies are supported (macro constant)
Defined in header <experimental/algorithm>
__cpp_lib_experimental_parallel_for_loop	a value of at least 201711 indicates that the for_loop class of algorithms is supported (macro constant)
Defined in header <experimental/simd>
__cpp_lib_experimental_parallel_simd	a value of at least 201803 indicates that the data-parallel types library is supported (macro constant)