sleep Fundamentals Explained

sleep Fundamentals Explained

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The actions of a system is undefined if a mutex is ruined while nevertheless owned by any threads, or maybe a thread terminates while owning a mutex. The mutex class satisfies all demands of Mutex and StandardLayoutType.

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit

If policy is std::launch::async

remaining - pointer to the item to put the remaining time on interruption. Could be NULL, by which case it is disregarded

Mutual exclusion algorithms avert multiple threads from concurrently accessing shared means. This prevents facts races and provides help for synchronization concerning threads. Defined in header

The top-degree purpose may perhaps communicate its return worth or an exception on the caller by means of std::assure or by modifying shared variables (which may demand synchronization, see std::mutex and std::atomic).

Even when the clock in use is std::chrono::steady_clock or An additional monotonic clock, a program clock adjustment may possibly induce a spurious wakeup.

Although notified less than lock, overload (one) would make no assures with regards to the point out with the affiliated predicate when Tips to improve your sleep routine returning on account of timeout.

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 longer term is the result of a connect with to std::async that utilised lazy analysis, this operate returns immediately with out waiting.

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

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit

This permits the function to check if end has actually been requested throughout its execution, and return if it's.

If the function f returns a value or throws an exception, it's stored within the shared state accessible with the std::potential that std::async returns on the caller. [edit] Deferred invocation