Class promise< void > (2.22.0)
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Specialize ISO/IEC TS 19571:2016 promise for void.
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<void>
using the same shared state as *this
.
Returns |
---|
Type | Description |
future< void > | |
set_value()
Satisfies the shared state.
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 2024-08-19 UTC.
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