std::future::wait

 

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future::wait_for

future::wait_until

 

template< class Rep, class Period > std::future_status wait_for( const std::chrono::duration<Rep,Period>& timeout_duration );

Waits for the result to become available. Blocks until specified timeout_duration has elapsed or the result becomes available, whichever comes first. Returns value identifies the state of the result. May block for longer than timeout_duration.

Parameters

timeout_duration

-

maximum duration to block for

Return value

Constant	Explanation
future_status::deferred	The function to calculate the result has not been started yet
future_status::ready	The result is ready
future_status::timeout	The timeout has expired

Exceptions

(none)

See also

wait	waits for the result to become available (public member function)
wait_until	waits for the result, returns if it is not available until specified time point has been reached (public member function)