sleep Secrets

sleep Secrets

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The returned worth of overload (three) indicates no matter whether pred evaluated to real, regardless of whether there was a stop asked for or not.

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit

If plan is std::start::async

remaining - pointer to the item To place the remaining time on interruption. May be NULL, through which case it can be ignored

Mutual exclusion algorithms avert multiple threads from concurrently accessing shared means. This stops details races and supplies support for synchronization amongst threads. Described in header

Waits for The end result to become offered. Blocks until specified timeout_duration has elapsed or the result will become accessible, whichever will come initial. The return price identifies the state of the result.

Even though the clock in use is std::chrono::steady_clock or One more monotonic clock, a process clock adjustment may well induce a spurious wakeup.

Frequent Clarification future_status::deferred The shared condition is made up of a deferred operate making use of lazy evaluation, so the result will be computed only when explicitly asked for future_status::All set The end result is ready future_status::timeout The timeout has expired [edit] Exceptions

This overload could possibly be used to disregard spurious awakenings while watching for a specific affliction to become real.

This operate may well block for lengthier than sleep_duration due to scheduling or How sleep cycle works resource contention delays.

length and remaining might point at a similar item, which simplifies re-operating the functionality after a signal.

std::launch::deferred.

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit

Threads commence execution promptly upon building on the involved thread object (pending any OS scheduling delays), commencing at the highest-amount function offered for a constructor argument. The return price of the top-degree purpose is disregarded and if it terminates by throwing an exception, std::terminate is named.

std::condition_variable can be a synchronization primitive utilised that has a std::mutex to dam a number of threads right until A further thread both modifies a shared variable (the condition) and notifies the std::condition_variable.