Top Guidelines Of sleep

Top Guidelines Of sleep

Blog Article

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit

Provides a hint on the implementation to reschedule the execution of threads, allowing for other threads to operate.

the connected thread completion synchronizes-with the prosperous return from the primary perform that may be waiting around around the shared point out, or Together with the return of the last functionality that releases the shared condition, whichever comes very first.

The regular library supplies facilities to get values which have been returned and to capture exceptions which are thrown by asynchronous duties (i.e. capabilities introduced in separate threads). These values are communicated in the shared state, through which the asynchronous task may possibly write its return worth or retail store an exception, and which may be examined, waited for, and normally manipulated by other threads that keep circumstances of std::upcoming or std::shared_future that reference that shared state. Outlined in header

A time stage is often a duration of time which includes passed For the reason that epoch of a specific clock. Outlined in header Outlined in namespace std::chrono

The call to std::async synchronizes with the call to f, as well as the completion of f is sequenced prior to making the shared condition Prepared.

The standard endorses the clock tied to abs_time be utilized to measure time; that clock isn't needed to be described as a monotonic clock. There won't be any guarantees concerning the habits of this function Should the clock is modified discontinuously, but the existing implementations transform abs_time from Clock to std::chrono::system_clock and delegate to POSIX pthread_cond_timedwait so the wait honors changes to your program clock, but not to your consumer-provided Clock.

Regular Clarification future_status::deferred The shared state has a deferred operate utilizing lazy analysis, so the result will be computed only when explicitly asked for future_status::Prepared The end result is ready future_status::timeout The timeout has expired [edit] Exceptions

In almost any case, the operate also may well watch for more time than until right after abs_time has actually Stages of sleep been reached on account of scheduling or useful resource contention delays.

The implementation might lengthen the conduct of the primary overload of std::async by enabling more (implementation-described) bits while in the default start plan.

If the long run is the result of a call to std::async that made use of lazy analysis, this operate returns right away with out ready.

std::launch::deferred.

Blocks the execution of the current thread for a minimum of till the TIME_UTC dependent duration pointed to by length has elapsed.

Threads start off execution immediately upon development of the connected thread item (pending any OS scheduling delays), starting at the very best-amount function offered for a constructor argument. The return price of the very best-stage functionality is ignored and if it terminates by throwing an exception, std::terminate is termed.

The result or exception is placed within the shared state related to the returned std::potential and only then it really is created Prepared. All even more accesses to precisely the same std::foreseeable future will return The end result quickly.