sleep No Further a Mystery
sleep No Further a Mystery
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No synchronization is performed on *this alone. Concurrently calling sign up for() on the same thread item from a number of threads constitutes a data race that leads to undefined behavior.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
std::launch::deferred or has more bits set, it will eventually drop again to deferred invocation or even the implementation-described guidelines in this case.
These factors are furnished for wonderful-grained atomic operations allowing for lockless concurrent programming. Each atomic Procedure is indivisible with regards to some other atomic operation that involves a similar item. Atomic objects are free of charge of data races.
Mutual exclusion algorithms prevent a number of threads from at the same time accessing shared assets. This helps prevent info races and presents help for synchronization concerning threads. Defined in header
Waits for the result to be accessible. Blocks until eventually specified timeout_duration has elapsed or the result gets out there, whichever arrives initially. The return value identifies the condition of The end result.
Even though the clock in use is std::chrono::steady_clock or A different monotonic clock, a procedure clock adjustment might induce a spurious wakeup.
Regular Explanation future_status::deferred The shared state includes a deferred operate working with lazy analysis, so The end result will be computed only when explicitly requested future_status::Prepared The result is prepared future_status::timeout The timeout has expired [edit] Exceptions
This overload could possibly be employed to ignore spurious awakenings though watching for a certain problem to become legitimate.
This function may well block for for a longer time than sleep_duration because of scheduling or useful resource competition delays.
length and remaining may position at exactly the Stages of sleep same item, which simplifies re-operating the functionality after a sign.
A semaphore is a light-weight synchronization primitive used to constrain concurrent use of a shared useful resource. When either would suffice, a semaphore might be extra effective than the usual condition variable. Outlined 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
If your 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