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std::counting_semaphore<LeastMaxValue>::try_acquire_until

From cppreference.com
 
 
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template< class Clock, class Duration >
bool try_acquire_until( const std::chrono::time_point<Clock, Duration>& abs_time );
(since C++20)

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.

Contents

[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

increments the internal counter and unblocks acquirers
(public member function) [edit]
decrements the internal counter or blocks until it can
(public member function) [edit]
tries to decrement the internal counter without blocking
(public member function) [edit]
tries to decrement the internal counter, blocking for up to a duration time
(public member function) [edit]