std::suspend_always - cppreference.com

From cppreference.com

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

indicates that an await expression always suspends
(public member function)
no-op
(public member function)
no-op
(public member function)

std::suspend_always::await_ready

constexpr bool await_ready() const noexcept { return false; }

Always returns false, indicating that an await expression always suspends.

std::suspend_always::await_suspend

constexpr void await_suspend( std::coroutine_handle<> ) const noexcept {}

Does nothing.

std::suspend_always::await_resume

constexpr void await_resume() const noexcept {}

Does nothing. An await expression does not produce a value if suspend_always is used.

Example

See also