std::future_status

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Free functions for atomic flags
atomic_flag_test_and_setatomic_flag_test_and_set_explicit (C++11)(C++11)
atomic_flag_clearatomic_flag_clear_explicit (C++11)(C++11)
atomic_flag_testatomic_flag_test_explicit (C++20)(C++20)
atomic_flag_waitatomic_flag_wait_explicit (C++20)(C++20)
atomic_flag_notify_one (C++20)
atomic_flag_notify_all (C++20)

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Defined in header`<future>`
enumclass future_status{ ready, timeout, deferred };		(since C++11)

Specifies state of a future as returned bywait_for andwait_until functions ofstd::future andstd::shared_future.

[edit]Constants

Enumerator	Meaning
`deferred`	the shared state contains a deferred function, so the result will be computed only when explicitly requested
`ready`	the shared state is ready
`timeout`	the shared state did not become ready before specified timeout duration has passed

[edit]See also

wait_for	waits for the result, returns if it is not available for the specified timeout duration (public member function of`std::future<T>`)[edit]
wait_for	waits for the result, returns if it is not available for the specified timeout duration (public member function of`std::shared_future<T>`)[edit]
wait_until	waits for the result, returns if it is not available until specified time point has been reached (public member function of`std::future<T>`)[edit]
wait_until	waits for the result, returns if it is not available until specified time point has been reached (public member function of`std::shared_future<T>`)[edit]

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std::future_status

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