Standard library header <execution>

 

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Language support <cfloat> <climits> <compare> (C++20) <coroutine> (C++20) <csetjmp> <csignal> <cstdarg> <cstddef> <cstdint> (C++11) <cstdlib> <exception> <initializer_list> (C++11)    <limits> <new> <source_location> (C++20) <stdfloat> (C++23) <typeinfo> <version> (C++20) Concepts <concepts> (C++20) Diagnostics <cassert> <cerrno> <debugging> (C++26) <stacktrace> (C++23) <stdexcept> <system_error> (C++11) Memory management <memory> <memory_resource> (C++17) <scoped_allocator> (C++11) Metaprogramming <type_traits> (C++11) <ratio> (C++11)

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This header is part of the algorithm library.

is_execution_policy (C++17)	test whether a class represents an execution policy (class template)
Defined in namespace std::execution
sequenced_policyparallel_policyparallel_unsequenced_policyunsequenced_policy (C++17)(C++17)(C++17)(C++20)	execution policy types (class)
seqparpar_unsequnseq (C++17)(C++17)(C++17)(C++20)	global execution policy objects (constant)

Synopsis

namespace std {
  // execution policy type trait
  template<class T> struct is_execution_policy;
  template<class T>
  inline constexpr bool is_execution_policy_v = is_execution_policy<T>::value;
}
 
namespace std::execution {
  // sequenced execution policy
  class sequenced_policy;
 
  // parallel execution policy
  class parallel_policy;
 
  // parallel and unsequenced execution policy
  class parallel_unsequenced_policy;
 
  // unsequenced execution policy
  class unsequenced_policy;
 
  // execution policy objects
  inline constexpr sequenced_policy            seq{ /*unspecified*/ };
  inline constexpr parallel_policy             par{ /*unspecified*/ };
  inline constexpr parallel_unsequenced_policy par_unseq{ /*unspecified*/ };
  inline constexpr unsequenced_policy          unseq{ /*unspecified*/ };
}