Class promise<T> (2.15.1)
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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 |
|
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Last updated 2024-10-04 UTC.
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