std::experimental::promise (library fundamentals TS)

This page is about the modified version of std::promise with type-erased allocator support provided by the Library Fundamentals TSes. For the version of promise provided by the concurrency TS supporting the std::future improvements made by that TS, see std::experimental::concurrency_v1::promise.

Defined in header <experimental/future>
template< class R > class promise;
 (1) (library fundamentals TS)
template< class R > class promise<R&>;
 (2) (library fundamentals TS)
template<>          class promise<void>;
 (3) (library fundamentals TS)

std::experimental::fundamentals_v1::promise (and std::experimental::fundamentals_v2::promise) is a modified version of std::promise provided by the library fundamentals TS with support for type-erased allocators.

Member types

Member type Definition
allocator_type std::experimental::erased_type

Member functions

 constructs the promise object
(public member function)
retrieves a pointer to the memory resource used by this object to allocate memory
(public member function)

Non-member function

 specializes the swap algorithm
(function template)

Helper classes

 specializes the std::uses_allocator type trait
(class template specialization)

Members identical to std::promise

Member functions

 destructs the promise object
(public member function of std::promise<R>)
assigns the shared state
(public member function of std::promise<R>)
swaps two promise objects
(public member function of std::promise<R>)
Getting the result
returns a future associated with the promised result
(public member function of std::promise<R>)
Setting the result
sets the result to specific value
(public member function of std::promise<R>)
sets the result to specific value while delivering the notification only at thread exit
(public member function of std::promise<R>)
sets the result to indicate an exception
(public member function of std::promise<R>)
sets the result to indicate an exception while delivering the notification only at thread exit
(public member function of std::promise<R>)