The Definitive Guide to sleep
The Definitive Guide to sleep
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No synchronization is carried out on *this by itself. Concurrently calling be part of() on the exact same thread item from various threads constitutes a knowledge race that ends in undefined conduct.
atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit
std::start::deferred or has added bits set, it'll tumble again to deferred invocation or even the implementation-defined policies In such a case.
remaining - pointer to the thing to put the remaining time on interruption. Could possibly be NULL, where circumstance it is actually disregarded
Although the shared variable is atomic, it has to be modified while possessing the mutex to properly publish the modification on the waiting thread.
The top-degree functionality could connect its return value or an exception on the caller via std::guarantee or by modifying shared variables (which can require synchronization, see std::mutex and std::atomic).
The typical endorses which the clock tied to abs_time be used to measure time; that clock just isn't necessary to become a monotonic clock. There aren't any guarantees concerning the actions of this function if the clock is adjusted discontinuously, but the present implementations change abs_time from Clock to std::chrono::system_clock and delegate to POSIX pthread_cond_timedwait so the wait honors changes into the system clock, although not to the person-provided Clock.
Although notified less than lock, overload (1) tends to make no ensures in regards to the condition from the connected predicate when returning as a result of timeout.
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
If the longer term is the result of a connect with to std::async that employed lazy analysis, this operate returns straight away with no waiting.
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
This allows the perform to examine if halt has been requested in the course of its execution, and return if Tips to improve your sleep routine it's got.
Should the std::long term acquired from std::async is just not moved from or sure to a reference, the destructor of the std::long term will block at the end of the complete expression until eventually the asynchronous Procedure completes, essentially producing code for example the subsequent synchronous: