std::experimental::parallel::sequential_execution_policy, std::experimental::parallel::parallel_execution_policy, std::experimental::parallel::parallel_vector_execution_policy

Defined in header `<experimental/execution_policy>`
class sequential_execution_policy { /* unspecified */ };		(parallelism TS)
class parallel_execution_policy { /* unspecified */ };		(parallelism TS)
class parallel_vector_execution_policy { /* unspecified */ };		(parallelism TS)

sequential_execution_policy, parallel_execution_policy and parallel_vector_execution_policy are tag types used to indicate the kinds of parallelism allowed in the execution of a parallel algorithm.

Language
Standard Library Headers
Freestanding and hosted implementations
Named requirements
Language support library
Concepts library (C++20)
Diagnostics library
Utilities library
Strings library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Numerics library
Input/output library
Localizations library
Regular expressions library (C++11)
Atomic operations library (C++11)
Thread support library (C++11)
Filesystem library (C++17)
Technical Specifications

Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals 2 TS)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Concepts (concepts TS)
Ranges (ranges TS)
Special mathematical functions (special math TR)

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