The best Side of sleep

The best Side of sleep

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The returned value of overload (3) implies whether pred evaluated to legitimate, irrespective of whether there was a stop asked for or not.

Supplies a hint to the implementation to reschedule the execution of threads, allowing for other threads to run.

If policy is std::start::async

The regular recommends which the clock tied to sleep_time be employed, during which case changes in the clock may be taken under consideration. Hence, the period from the block is likely to be roughly than sleep_time - Clock::now() at the time of the decision, based on the way in the adjustment and whether it's honored through the implementation.

Provides a hint for the implementation to reschedule the execution of threads, allowing other threads to operate.

The call to std::async synchronizes with the call to file, and the completion of f is sequenced before you make the shared state Prepared.

The actual sleep time can be longer than requested as it is rounded up into the timer granularity and because of scheduling and context switching overhead.

The conventional endorses that a gentle clock is accustomed to measure the duration. If an implementation makes use of a method clock rather, the wait time may also be delicate to clock changes.

In almost any situation, the perform also may perhaps look forward to more time than till after abs_time has actually been attained due to scheduling or useful resource competition delays.

This purpose might block for longer than timeout_duration due to scheduling or useful resource contention delays.

Note that the destructors of std::futures received by means other than a phone to std::async hardly ever block. [edit] Case in point

A period is made of a span of your time, described as some amount of ticks of a while device. One example Stages of sleep is, "forty two seconds" may be represented by a length consisting of 42 ticks of a 1-next time device. Described in header Outlined in namespace std::chrono

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The result or exception is placed while in the shared point out related to the returned std::potential and only then it can be made ready. All even more accesses to the exact same std::future will return the result right away.