std::suspend_always
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
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await_ready | indicates that an await expression always suspends (public member function) |
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await_suspend | no-op (public member function) |
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await_resume | no-op (public member function) |
std::suspend_always::await_ready
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
constexpr void await_suspend( std::coroutine_handle<> ) const noexcept {}
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Does nothing.
std::suspend_always::await_resume
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
See also
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(C++20) | indicates that an await-expression should never suspend (class) |
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