Detailed Notes on sleep
Detailed Notes on sleep
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The returned price of overload (three) suggests no matter whether pred evaluated to real, regardless of whether there was a cease requested or not.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
If policy is std::start::async
These components are furnished for fantastic-grained atomic functions making it possible for for lockless concurrent programming. Each atomic Procedure is indivisible with regards to every other atomic operation that will involve precisely the same object. Atomic objects are absolutely free of data races.
Mutual exclusion algorithms stop a number of threads from at the same time accessing shared sources. This helps prevent data races and delivers support for synchronization among threads. Described in header
Waits for the result to be available. Blocks till specified timeout_duration has elapsed or The end result results in being accessible, whichever arrives to start with. The return value identifies the point out of the result.
Even if the clock in use is std::chrono::steady_clock or another monotonic clock, a method clock adjustment might induce a spurious wakeup.
Constant Explanation future_status::deferred The shared state contains a deferred function using lazy evaluation, so The end result will be computed only when explicitly asked for future_status::Completely ready The end result is prepared future_status::timeout The timeout has expired [edit] Exceptions
This overload could be utilized to disregard spurious awakenings when expecting a particular condition to be real.
This purpose could block for longer than sleep_duration resulting from scheduling or source rivalry delays.
duration and remaining may possibly stage at the exact same object, which simplifies re-jogging the perform following a signal.
A length consists of a span of your time, described as some variety of ticks of a while unit. One Stages of sleep example is, "42 seconds" may very well be represented by a duration consisting of forty two ticks of a 1-next time unit. Described in header Defined in namespace std::chrono
A calling thread owns a mutex with the time that it successfully calls both lock or try_lock right until it calls unlock.
This overload could possibly be made use of to ignore spurious awakenings even though looking ahead to a specific problem to be true.
Threads start out execution immediately upon building on the affiliated thread item (pending any OS scheduling delays), starting at the top-degree operate presented to be a constructor argument. The return value of the very best-degree purpose is disregarded and if it terminates by throwing an exception, std::terminate is called.