The best Side of sleep
The best Side of sleep
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atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
A condition variable is a synchronization primitive which allows many threads to communicate with each other.
The sleep may well resume earlier if a sign that isn't ignored is gained. In this kind of circumstance, if remaining just isn't NULL, the remaining time duration is saved into the object pointed to by remaining.
The top-stage perform may well talk its return price or an exception towards the caller by means of std::promise or by modifying shared variables (which can need synchronization, see std::mutex and std::atomic).
Even if the shared variable is atomic, it must be modified although proudly owning the mutex to correctly publish the modification into the waiting thread.
Waits for the result to be out there. Blocks till specified timeout_duration has elapsed or the result turns into obtainable, whichever will come initial. The return value identifies the condition of The end result.
std::future referring towards the shared state developed by this phone to std::async. [edit] Launch insurance policies
The category jthread signifies one thread of execution. It's precisely the same standard conduct as std::thread, besides that jthread immediately rejoins on destruction, and may be cancelled/stopped in particular circumstances.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
This purpose could block for longer than timeout_duration as a consequence of scheduling or source contention delays.
Observe that the destructors of std::futures attained How to get better sleep by implies other than a simply call to std::async by no means block. [edit] Case in point
The regular suggests that a steady clock is accustomed to evaluate the length. If an implementation works by using a method clock in its place, the wait time may be sensitive to clock adjustments.
A contacting thread owns a mutex in the time that it properly phone calls either lock or try_lock right up until it phone calls unlock.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
The end result or exception is put inside the shared condition connected to the returned std::upcoming and only then it is made ready. All more accesses to precisely the same std::foreseeable future will return The end result promptly.