sleep No Further a Mystery
The actions of the method is undefined if a mutex is wrecked although nonetheless owned by any threads, or perhaps a thread terminates while proudly owning a mutex. The mutex course satisfies all needs of Mutex and StandardLayoutType.
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The sleep could resume earlier if a signal that isn't ignored is received. In such scenario, if remaining is not NULL, the remaining time period is stored into the article pointed to by remaining.
remaining - pointer to the object To place the remaining time on interruption. Can be NULL, by which case it can be overlooked
Mutual exclusion algorithms stop numerous threads from simultaneously accessing shared assets. This prevents information races and provides assist for synchronization concerning threads. Defined in header
Waits for The end result to be obtainable. Blocks until finally specified timeout_duration has elapsed or the result becomes available, whichever will come first. The return worth identifies the condition of The end result.
The particular sleep time may be lengthier than requested since it is rounded up on the timer granularity and since of scheduling and context switching overhead.
Continuous Rationalization future_status::deferred The shared condition contains a deferred purpose making use of lazy analysis, so The end result will probably be computed only when explicitly How sleep cycle works asked for future_status::Prepared The end result is ready future_status::timeout The timeout has expired [edit] Exceptions
The perform also may possibly block right until following sleep_time has become arrived at because of approach scheduling or useful resource contention delays.
Latches and limitations are thread coordination mechanisms that allow any range of threads to dam until an expected quantity of threads arrive. A latch can't be reused, even though a barrier may be used consistently. Defined in header
Be aware that the destructors of std::futures acquired by signifies besides a simply call to std::async in no way block. [edit] Instance
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 far more productive than a affliction variable. Defined 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
The result or exception is positioned while in the shared condition associated with the returned std::long run and only then it is actually produced Prepared. All more accesses to precisely the same std::long term will return the result instantly.