Overview

template<typename T = ReadyType>
class pw::async2::Poll< T >

A value that may or may not be ready yet.

Poll<T> most commonly appears as the return type of an function that checks the current status of an asynchronous operation. If the operation has completed, it returns with Ready(value). Otherwise, it returns Pending to indicate that the operations has not yet completed, and the caller should try again in the future.

Poll<T> itself is "plain old data" and does not change on its own. To check the current status of an operation, the caller must invoke the Poll<T> returning function again and examine the newly returned Poll<T>.

Public Types
using	value_type = T

Public Member Functions
	Poll ()=delete
	Basic constructors.

constexpr	Poll (const Poll &)=default

constexpr Poll &	operator= (const Poll &)=default

constexpr	Poll (Poll &&)=default

constexpr Poll &	operator= (Poll &&)=default

template<typename U , internal_poll::EnableIfImplicitlyConvertible< value_type, const U & > = 0>
constexpr	Poll (const Poll< U > &other)

template<typename U , internal_poll::EnableIfExplicitlyConvertible< value_type, const U & > = 0>
constexpr	Poll (const Poll< U > &other)

template<typename U , internal_poll::EnableIfImplicitlyConvertible< value_type, U && > = 0>
constexpr	Poll (Poll< U > &&other)

template<typename U , internal_poll::EnableIfExplicitlyConvertible< value_type, U && > = 0>
constexpr	Poll (Poll< U > &&other)

template<typename U = value_type, internal_poll::EnableIfImplicitlyInitializable< value_type, U > = 0>
constexpr	Poll (U &&u)

template<typename U = value_type, internal_poll::EnableIfExplicitlyInitializable< value_type, U > = 0>
constexpr	Poll (U &&u)

template<typename... Args>
constexpr	Poll (std::in_place_t, Args &&... args)

constexpr	Poll (value_type &&value)

constexpr Poll &	operator= (value_type &&value)

constexpr	Poll (PendingType) noexcept

constexpr Poll &	operator= (PendingType) noexcept

constexpr bool	IsReady () const noexcept
	Returns whether or not this value is `Ready`.

constexpr bool	IsPending () const noexcept
	Returns whether or not this value is `Pending`.

constexpr Poll	Readiness () const noexcept

constexpr value_type &	value () &noexcept

constexpr const value_type &	value () const &noexcept

constexpr value_type &&	value () &&noexcept

constexpr const value_type &&	value () const &&noexcept

constexpr const value_type *	operator-> () const noexcept

constexpr value_type *	operator-> () noexcept

constexpr const value_type &	operator* () const &noexcept

constexpr value_type &	operator* () &noexcept

constexpr const value_type &&	operator* () const &&noexcept

constexpr value_type &&	operator* () &&noexcept

constexpr void	IgnorePoll () const

The documentation for this class was generated from the following file:

pw_async2/public/pw_async2/poll.h

Overview

Public Types

Public Member Functions