std::counting_semaphore<LeastMaxValue>::try_acquire_until
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std::counting_semaphore
Member functions
Operations
counting_semaphore::try_acquire_until
Constants
template< class Clock, class Duration >
bool try_acquire_until( const std::chrono::time_point <Clock, Duration>& abs_time );
(since C++20)
bool try_acquire_until( const std::chrono::time_point <Clock, Duration>& abs_time );
Tries to atomically decrement the internal counter by 1 if it is greater than 0; otherwise blocks until it is greater than 0 and can successfully decrement the internal counter, or the abs_time time point has been passed.
The programs is ill-formed if std::chrono::is_clock_v <Clock> is false.
[edit] Preconditions
Clock meets the Clock requirements.
[edit] Parameters
abs_time
-
the earliest time the function must wait until in order to fail
[edit] Return value
true if it decremented the internal counter, otherwise false.
[edit] Exceptions
May throw std::system_error or a timeout-related exception.
[edit] Notes
In practice the function may take longer than abs_time to fail.
[edit] See also
tries to decrement the internal counter, blocking for up to a duration time
(public member function) [edit]
(public member function) [edit]