Not known Facts About sleep

Not known Facts About sleep

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The habits of a application is undefined if a mutex is wrecked although still owned by any threads, or simply a thread terminates even though owning a mutex. The mutex course satisfies all needs of Mutex and StandardLayoutType.

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The sleep may perhaps resume before if a signal that's not overlooked is obtained. In these types of scenario, if remaining isn't NULL, the remaining time period is stored into the object pointed to by remaining.

The normal endorses the clock tied to sleep_time be made use of, through which circumstance adjustments of the clock could be taken under consideration. Hence, the period in the block is likely to be more or less than sleep_time - Clock::now() at enough time of the call, dependant upon the path with the adjustment and whether it is honored because of the implementation.

A time issue is really a length of your time that has passed For the reason that epoch of a selected clock. Outlined in header Outlined in namespace std::chrono

Waits for the result to become obtainable. Blocks until eventually specified timeout_duration has elapsed or the result will become available, whichever comes very first. The return benefit identifies the point out of the result.

The normal suggests that the clock tied to abs_time be used to measure time; that clock just isn't necessary to be described as a monotonic clock. There won't be any assures concerning the behavior of this operate In case the clock is altered discontinuously, but the prevailing implementations transform abs_time from Clock to std::chrono::system_clock and delegate to POSIX pthread_cond_timedwait so which the hold out honors changes to your technique clock, but not to the user-supplied Clock.

The typical suggests that a gradual clock is used to evaluate the period. If an implementation takes advantage of a process clock as a substitute, the hold out time may additionally be sensitive to clock changes.

It makes How to get better sleep it possible for some quantity of threads to wait (maybe by using a timeout) for notification from Yet another thread that they may perhaps commence. A problem variable is always affiliated with a mutex. Outlined in header

The implementation could extend the habits of the initial overload of std::async by enabling extra (implementation-described) bits while in the default launch plan.

Be aware which the destructors of std::futures received by means besides a get in touch with to std::async hardly ever block. [edit] Case in point

The typical suggests that a gradual clock is accustomed to measure the duration. If an implementation utilizes a method clock rather, the wait time could also be delicate to clock changes.

Blocks the execution of the present thread for at least right until the TIME_UTC based mostly duration pointed to by period has elapsed.

This permits the function to examine if prevent is asked for throughout its execution, and return if it's.

If your functionality file returns a worth or throws an exception, it is actually stored in the shared state available from the std::upcoming that std::async returns to the caller. [edit] Deferred invocation