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
.
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Defined in header
<experimental/future>
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||
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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>
)
|
|