std::counting_semaphore<LeastMaxValue>::try_acquire

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std::counting_semaphore

Member functions
counting_semaphore::counting_semaphore
counting_semaphore::~counting_semaphore
Operations
counting_semaphore::release
counting_semaphore::acquire
counting_semaphore::try_acquire
counting_semaphore::try_acquire_for
counting_semaphore::try_acquire_until
Constants
counting_semaphore::max

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bool try_acquire()noexcept;		(since C++20)

Tries to atomically decrement the internal counter by1 if it is greater than0; no blocking occurs regardless.

[edit]Return value

true if it decremented the internal counter, otherwisefalse.

[edit]Notes

Implementations are allowed to fail to decrement the counter even if it was greater than0 - i.e., they are allowed to spuriously fail and returnfalse.

[edit]See also

release	increments the internal counter and unblocks acquirers (public member function)[edit]
acquire	decrements the internal counter or blocks until it can (public member function)[edit]
try_acquire_for	tries to decrement the internal counter, blocking for up to a duration time (public member function)[edit]
try_acquire_until	tries to decrement the internal counter, blocking until a point in time (public member function)[edit]

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std::counting_semaphore<LeastMaxValue>::try_acquire

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