The Definitive Guide to sleep
The returned worth of overload (3) implies no matter if pred evaluated to real, irrespective of whether there was a quit asked for or not.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
a connect with to some ready purpose on an asynchronous return object that shares the shared point out made by this std::async phone blocks till the related thread has accomplished, as if joined, or else day out; and
These factors are offered for fine-grained atomic functions permitting for lockless concurrent programming. Each individual atomic operation is indivisible with regards to any other atomic Procedure that involves the exact same object. Atomic objects are no cost of information races.
Mutual exclusion algorithms prevent several threads from concurrently accessing shared means. This prevents info races and delivers support for synchronization among threads. Outlined in header
Waits for The end result to be available. Blocks till specified timeout_duration has elapsed or The end result will become available, whichever comes 1st. The return price identifies the point out of the result.
Although the clock in use is std::chrono::steady_clock or A further monotonic clock, a system clock adjustment could induce a spurious wakeup.
Frequent Rationalization future_status::deferred The shared point out has a deferred purpose working with lazy analysis, so The end result might be computed only when explicitly asked for future_status::All set The result is ready future_status::timeout The timeout has expired [edit] Exceptions
This overload may be applied to disregard spurious awakenings when expecting a particular condition to be real.
This function may well block for for a longer time than timeout_duration because of scheduling or useful resource competition delays.
The category thread represents one thread of execution. Threads permit various functions to execute concurrently.
A period is made up of a span of your time, defined as some range of ticks of some time device. For instance, "forty two seconds" could be represented by a length consisting of forty two ticks of a one-second time device. Defined in header Outlined in namespace std::chrono
A calling thread owns a mutex from your time How to get better sleep that it properly calls either lock or try_lock right up until it phone calls unlock.
This overload might be utilised to disregard spurious awakenings though looking forward to a certain situation to be legitimate.
Threads start execution right away upon development in the linked thread item (pending any OS scheduling delays), beginning at the very best-stage purpose furnished to be a constructor argument. The return price of the best-amount function is ignored and if it terminates by throwing an exception, std::terminate is named.