Implement promise<T>
as defined in ISO/IEC TS 19571:2016.
Constructors
promise()
Creates a promise with an unsatisfied shared state.
promise(std::function< void()>)
Creates a promise with an unsatisfied shared state.
Parameter
Name
Description
cancellation_callback
std::function< void()>
promise(null_promise_t)
Creates a promise without a shared state.
Parameter
Name
Description
x
null_promise_t
promise(promise &&)
Constructs a new promise and transfer any shared state from rhs
.
Parameter
Name
Description
promise &&
promise(promise const &)
Parameter
Name
Description
promise const &
Operators
operator=(promise &&)
Abandons the shared state in *this
, if any, and transfers the shared state from rhs
.
Parameter
Name
Description
rhs
promise &&
Returns
Type
Description
promise &
operator=(promise const &)
Parameter
Name
Description
promise const &
Returns
Type
Description
promise &
Functions
swap(promise &)
Swaps the shared state in *this
with rhs
.
Parameter
Name
Description
other
promise &
Returns
Type
Description
void
get_future()
Creates the future<T>
using the same shared state as *this
.
Returns
Type
Description
future< T >
set_value(T)
Satisfies the shared state.
Parameter
Name
Description
value
T
Exceptions
Type
Description
std::future_error
with std::future_errc::promise_already_satisfied if the shared state is already satisfied.
std::future_error
with std::no_state if the promise does not have a shared state.
Returns
Type
Description
void
