std::counting_semaphore<LeastMaxValue>::max - cppreference.com

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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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constexpr std::ptrdiff_t max() noexcept;		(since C++20)

Returns the internal counter's maximum possible value, which is greater than or equal to LeastMaxValue.

Return value

The internal counter's maximum possible value, as a std::ptrdiff_t.

Notes

For specialization binary_semaphore, LeastMaxValue is equal to 1.

As its name indicates, the LeastMaxValue is the minimum max value, not the actual max value. Thus max() can yield a number larger than LeastMaxValue.