std::suspend_always
From cppreference.com
C++
Utilities library
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Coroutine support
| Coroutine traits | ||||
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(C++20)
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| Coroutine handle | ||||
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(C++20)
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| No-op coroutines | ||||
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(C++20)
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(C++20)
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| Trivial awaitables | ||||
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(C++20)
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suspend_always (C++20) |
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| Range generators | ||||
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(C++23)
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Defined in header <coroutine>
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struct suspend_always; |
(since C++20) | |
suspend_always is an empty class which can be used to indicate that an await expression always suspends and does not produce a value.
Member functions
await_ready |
indicates that an await expression always suspends (public member function) |
await_suspend |
no-op (public member function) |
await_resume |
no-op (public member function) |
std::suspend_always::await_ready
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constexpr
bool await_ready(
)
const
noexcept
{
return
false
;
}
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Always returns false, indicating that an await expression always suspends.
std::suspend_always::await_suspend
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constexpr
void await_suspend(
std::coroutine_handle
<>
)
const
noexcept
{
}
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Does nothing.
std::suspend_always::await_resume
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constexpr
void await_resume(
)
const
noexcept
{
}
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Does nothing. An await expression does not produce a value if suspend_always is used.
Example
| This section is incomplete Reason: no example |
See also
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(C++20)
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indicates that an await-expression should never suspend (class) |