A Secret Weapon For sleep
A Secret Weapon For sleep
Blog Article
The returned value of overload (three) suggests no matter whether pred evaluated to correct, regardless of whether there was a prevent asked for or not.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
std::launch::deferred or has supplemental bits established, it'll drop back to deferred invocation or maybe the implementation-outlined procedures In cases like this.
The very best-amount purpose might connect its return worth or an exception to your caller by way of std::assure or by modifying shared variables (which may involve synchronization, see std::mutex and std::atomic).
Although the shared variable is atomic, it should be modified even though proudly owning the mutex to correctly publish the modification towards the waiting around thread.
The highest-amount function might converse its return price or an exception into the caller via std::promise or by modifying shared variables (which can need synchronization, see std::mutex and std::atomic).
The conventional recommends that the clock tied to abs_time be used to measure time; that clock isn't required to be considered a monotonic clock. There aren't any ensures regarding the conduct of this function When the clock is adjusted discontinuously, but the existing implementations convert abs_time from Clock to std::chrono::system_clock and delegate to POSIX pthread_cond_timedwait so that the wait honors adjustments towards the method clock, but not towards the user-supplied Clock.
Even if notified under lock, overload (one) will make no assures with regard to the condition from the related predicate when returning because of timeout.
The functionality also may well block right up until right after sleep_time continues to be attained because of process scheduling or useful resource competition delays.
Latches and obstacles are thread coordination mechanisms that allow for any variety of threads to block right until an anticipated number of threads get there. A latch cannot be reused, though a barrier can be utilized repeatedly. Described in header
The class thread signifies just one thread of execution. Threads allow for several capabilities to execute concurrently.
A length consists of a span of your time, defined as some variety of ticks of a while How to get better sleep unit. Such as, "42 seconds" can be represented by a duration consisting of forty two ticks of a one-2nd time device. Defined in header Outlined in namespace std::chrono
A contacting thread owns a mutex from the time that it efficiently phone calls either lock or try_lock right up until it phone calls unlock.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
The result or exception is placed within the shared condition linked to the returned std::foreseeable future and only then it can be built Completely ready. All further accesses to exactly the same std::foreseeable future will return The end result promptly.