The best Side of sleep
The best Side of sleep
Blog Article
No synchronization is executed on *this itself. Concurrently contacting be a part of() on exactly the same thread item from numerous threads constitutes a knowledge race that brings about undefined conduct.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
std::start::deferred or has extra bits set, it will eventually fall back to deferred invocation or maybe the implementation-outlined insurance policies In this instance.
remaining - pointer to the item To place the remaining time on interruption. Can be NULL, wherein circumstance it is ignored
Even when the shared variable is atomic, it have to be modified though owning the mutex to correctly publish the modification to your ready thread.
The top-level operate may well connect its return value or an exception towards the caller by using std::promise or by modifying shared variables (which may demand synchronization, see std::mutex and std::atomic).
The regular recommends which the clock tied to abs_time be utilized to evaluate time; that clock is just not required to be considered a monotonic clock. There aren't any guarantees concerning the actions of the purpose If your clock is altered discontinuously, but the present implementations convert abs_time from Clock to std::chrono::system_clock and delegate to POSIX pthread_cond_timedwait so that the wait honors changes into the procedure clock, although not to your consumer-presented Clock.
Whether or not notified below lock, How sleep cycle works overload (1) makes no assures about the point out in the associated predicate when returning resulting from timeout.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
If the longer term is the results of a connect with to std::async that made use of lazy analysis, this function returns instantly with out waiting.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
This enables the functionality to check if cease has long been requested for the duration of its execution, and return if it's got.
When the std::foreseeable future attained from std::async isn't moved from or certain to a reference, the destructor of your std::long term will block at the end of the complete expression until the asynchronous operation completes, in essence earning code like the next synchronous: