Section 3: library functions
std::experimental::pmr::memory_resource::memory_resource – std::experimental::pmr::memory_resource::memory_resource Synopsis memory_resource() = default; (1)(library fundamentals TS)(implicitly declared) memory_resource(const memory_resource &) = default; (2)(library fundamentals TS)(implicitly declared) 1) Implicitly declared default constructor. 2) Implicitly declared copy constructor.
std::experimental::pmr::memory_resource::is_equal – std::experimental::pmr::memory_resource::is_equal Synopsis bool is_equal(const memory_resource& other) const noexcept; (library fundamentals TS) Compares *this for equality with other. Two memory_resources compare equal if and only if memory allocated from one memory_resource can be deallocated from the other and vice versa. Equivalent to return do_is_equal(other);. See also do_is_equal compare for equality with another memory_resource (virtual…
std::experimental::pmr::memory_resource::do_is_equal – std::experimental::pmr::memory_resource::do_is_equal Synopsis virtual bool is_equal(const memory_resource &other) const noexcept = 0; (library fundamentals TS) Compares *this for equality with other. Two memory_resources compare equal if and only if memory allocated from one memory_resource can be deallocated from the other and vice versa. Notes The most-derived type of other may not match the most…
std::experimental::pmr::memory_resource::do_deallocate – std::experimental::pmr::memory_resource::do_deallocate Synopsis virtual void *do_deallocate(void *p, std::size_t bytes, std::size_t alignment) = 0; (library fundamentals TS) Deallocates the storage pointed to by p. p shall have been returned by a prior call to allocate(bytes, alignment) on a memory_resource that compares equal to *this, and the storage it points to shall not yet have been…
std::experimental::pmr::memory_resource::do_allocate – std::experimental::pmr::memory_resource::do_allocate Synopsis virtual void *do_allocate(std::size_t bytes, std::size_t alignment) = 0; (library fundamentals TS) Allocates storage with a size of at least bytes bytes. The returned storage is aligned to the specified alignment if such alignment is supported, and to alignof(std::max_align_t) otherwise. alignment shall be a power of two. Exceptions Throws an exception if…
std::experimental::pmr::memory_resource::deallocate – std::experimental::pmr::memory_resource::deallocate Synopsis void *deallocate(void *p, std::size_t bytes, std::size_t alignment = alignof(std::max_align_t)); (library fundamentals TS) Deallocates the storage pointed to by p.p shall have been returned by a prior call to allocate(bytes, alignment) on a memory_resource that compares equal to *this, and the storage it points to shall not yet have been deallocated. Equivalent…
std::experimental::pmr::memory_resource::allocate – std::experimental::pmr::memory_resource::allocate Synopsis void *allocate(std::size_t bytes, std::size_t alignment = alignof(std::max_align_t)); (library fundamentals TS) Allocates storage with a size of at least bytes bytes.The returned storage is aligned to the specified alignment if such alignment is supported, and to alignof(std::max_align_t) otherwise. Equivalent to return do_allocate(bytes, alignment); . Exceptions Throws an exception if storage of the…
std::experimental::pmr::memory_resource – std::experimental::pmr::memory_resource Synopsis Defined in header <experimental/memory_resource> class memory_resource; (library fundamentals TS) The class std::experimental::pmr::memory_resource is an abstract interface to an unbounded set of classes encapsulating memory resources. Member functions constructor constructs a new memory_resource (public member function) (implicitly declared) destructor destructs an memory_resource (virtual public member function) [virtual] operator= Implicitly declared copy assignment…
std::experimental::pmr::get_default_resource – std::experimental::pmr::get_default_resource Synopsis Defined in header <experimental/memory_resource> memory_resource* get_default_resource() noexcept; (library fundamentals TS) Gets the default memory resource pointer. The default memory resource pointer is used by certain facilities when an explicit memory resource is not supplied. The initial default memory resource pointer is the return value of new_delete_resource(). This function is thread-safe. Previous…
std::experimental::parallel::transform_reduce – std::experimental::parallel::transform_reduce Synopsis Defined in header <experimental/numeric> template<class InputIt, class UnaryOp, class T, class BinaryOp> T transform_reduce(InputIt first, InputIt last, (1) (parallelism TS) UnaryOp unary_op, T init, BinaryOp binary_op); template<class ExecutionPolicy, class InputIt, class UnaryOp, class T, class BinaryOp> T transform_reduce(ExecutionPolicy&& policy, (2) (parallelism TS) InputIt first, InputIt last, UnaryOp unary_op, T init, BinaryOp…
std::experimental::parallel::sequential_execution_policy, – std::experimental::parallel::sequential_execution_policy, Synopsis 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.
std::experimental::parallel::seq,std::experimental::parallel::par,std::experimental::parallel::par_vec – std::experimental::parallel::seq,std::experimental::parallel::par,std::experimental::parallel::par_vec Synopsis 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…
std::experimental::parallel::seq,std::experimental::parallel::par, – std::experimental::parallel::seq,std::experimental::parallel::par, Synopsis 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.
std::experimental::parallel::reduce – std::experimental::parallel::reduce Synopsis Defined in header <experimental/numeric> template<class InputIt> typename std::iterator_traits<InputIt>::value_type reduce( (1) (parallelism TS) InputIt first, InputIt last); template<class ExecutionPolicy, class InputIterator> typename std::iterator_traits<InputIt>::value_type reduce( (2) (parallelism TS) ExecutionPolicy&& policy, InputIt first, InputIt last); template<class InputIt, class T> (3) (parallelism TS) T reduce(InputIt first, InputIt last, T init); template<class ExecutionPolicy, class InputIt, class…
std::experimental::parallel::is_execution_policy – std::experimental::parallel::is_execution_policy Synopsis Defined in header<experimental / execution_policy> template <class T> (parallelism TS) struct is_execution_policy; Checks whether T is a standard or implementation-defined execution policy type. Provides the member constant value which is equal to true, if T is execution_policy, sequential_execution_policy, parallel_execution_policy, parallel_vector_execution_policy, or an implementation-defined execution policy type. Otherwise, value is equal to…
std::experimental::packaged_task<R(Args…)>::packaged_task(libraryfundamentalsTS) – std::experimental::packaged_task<R(Args…)>::packaged_task(libraryfundamentalsTS) Synopsis packaged_task() noexcept; (1)(library fundamentals TS) template <class F> (2)(library fundamentals TS) explicit packaged_task(F &&f); template <class F, class Allocator> (3)(library fundamentals TS) explicit packaged_task(std::allocator_arg_t, const Allocator &alloc, F &&f); packaged_task(const packaged_task &) = delete; (4)(library fundamentals TS) packaged_task(packaged_task &&rhs) noexcept; (5)(library fundamentals TS) Constructs a new std::experimental::packaged_task object. 1) Constructs a…
std::experimental::packaged_task<R(Args…)>::get_memory_resource – std::experimental::packaged_task<R(Args…)>::get_memory_resource Synopsis std::experimental::pmr::memory_resource* get_memory_resource() const noexcept; (library fundamentals TS) Returns a pointer to the memory resource used by this object to allocate memory. Parameters (none) Return value A pointer to the memory resource used by this object to allocate memory. See also constructs the task object constructor (public member function)
std::experimental::packaged_task(libraryfundamentalsTS) – std::experimental::packaged_task(libraryfundamentalsTS) Synopsis Defined in header <experimental/future> template< class > class packaged_task; //not defined (1) (library fundamentals TS) template< class R, class …Args > (2) (library fundamentals TS) class packaged_task<R(Args…)>; std::experimental::fundamentals_v1::packaged_task (and std::experimental::fundamentals_v2::packaged_task) is a modified version of std::packaged_task provided by the library fundamentals TS with support for type-erased allocators. Member types Member type…
std::experimental::packaged_task(concurrencyTS) – std::experimental::packaged_task(concurrencyTS) Synopsis Defined in header <experimental/future> template< class > class packaged_task; //not defined (1) (concurrency TS) template< class R, class …Args > (2) (concurrency TS) class packaged_task<R(Args…)>; std::experimental::concurrency_v1::packaged_task is a modified version of std::packaged_task provided by the concurrency TS that works with std::experimental::future. The only change from std::packaged_task is that the get_future() member…
std::experimental::overaligned_tag,std::experimental::overaligned – std::experimental::overaligned_tag,std::experimental::overaligned Synopsis Defined in header<experimental / simd> template <std::size_t N> struct overaligned_tag { }; template <std::size_t N> inline constexpr overaligned_tag<N> overaligned{}; This tag type indicates that the buffer of copy_from and copy_to is aligned to N. See also