An Unbiased View of sleep
An Unbiased View of sleep
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No synchronization is executed on *this by itself. Concurrently contacting be a part of() on the same thread item from numerous threads constitutes a knowledge race that leads to undefined behavior.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
This overload can be utilised to ignore spurious awakenings though watching for a particular condition to be true.
The very best-amount perform may perhaps communicate its return worth or an exception to the caller through std::promise or by modifying shared variables (which can demand synchronization, see std::mutex and std::atomic).
Even though the shared variable is atomic, it have to be modified though owning the mutex to correctly publish the modification on the ready thread.
The best-amount function could converse its return benefit or an exception into the caller by way of std::promise or by modifying shared variables (which may call for synchronization, see std::mutex and std::atomic).
The regular recommends that the clock tied to abs_time be used to measure time; that clock just isn't needed to certainly be a monotonic clock. There isn't any ensures concerning the habits of the operate In case the clock is modified discontinuously, but the present implementations change abs_time from Clock to std::chrono::system_clock and delegate to POSIX pthread_cond_timedwait so the wait around honors changes on the technique clock, although not on the consumer-presented Clock.
Even though notified below lock, overload (one) would make no ensures in regards to the condition on the linked predicate when returning on account of 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 result of a contact to std::async that used lazy analysis, this function returns quickly without waiting around.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
Blocks the execution of the present thread for a minimum of until finally the TIME_UTC dependent period pointed to by How sleep cycle works duration has elapsed.
This enables the purpose to examine if stop is asked for through its execution, and return if it's got.
When the std::potential received from std::async just isn't moved from or certain to a reference, the destructor of your std::future will block at the end of the total expression right up until the asynchronous Procedure completes, essentially creating code including the next synchronous: