The returned worth of overload (three) indicates regardless of whether pred evaluated to real, regardless of whether there was a stop requested or not.

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit

If plan is std::start::async

These factors are supplied for wonderful-grained atomic functions permitting for lockless concurrent programming. Just about every atomic Procedure is indivisible with regards to every other atomic Procedure that will involve exactly the same object. Atomic objects are absolutely free of knowledge races.

Mutual exclusion algorithms avert various threads from simultaneously accessing shared assets. This helps prevent data races and gives assist for synchronization concerning threads. Defined in header

Waits for the result to be readily available. Blocks until specified timeout_duration has elapsed or the result gets readily available, whichever comes initial. The return worth identifies the condition of The end result.

Whether or not the clock in use is std::chrono::steady_clock or One more monotonic clock, a process clock adjustment may perhaps induce a spurious wakeup.

Frequent Clarification future_status::deferred The How to get better sleep shared condition is made up of a deferred operate employing lazy analysis, so The end result is going to be computed only when explicitly requested future_status::Completely ready The result is ready future_status::timeout The timeout has expired [edit] Exceptions

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit

This function may well block for for a longer time than sleep_duration due to scheduling or useful resource competition delays.

If the long run is the result of a phone to std::async that utilized lazy analysis, this function returns promptly with out ready.

A semaphore is a lightweight synchronization primitive accustomed to constrain concurrent access to a shared source. When possibly would suffice, a semaphore could be additional efficient than a ailment variable. Defined in header

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

In case the purpose file returns a worth or throws an exception, it can be saved from the shared point out obtainable in the std::upcoming that std::async returns into the caller. [edit] Deferred invocation