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std::atomic_flag::test

(since C++20) 
bool test( std::memory_order order = std::memory_order::seq_cst ) const volatile noexcept;
 
bool test( std::memory_order order = std::memory_order::seq_cst ) const noexcept;

Atomically reads the value of the *this and returns the value.

Parameters

order - the memory synchronization ordering for this operation: must not be std::memory_order::release or std::memory_order::acq_rel

Return value

The value atomically read.

Example

See also

(C++20)(C++20)
 atomically returns the value of the flag
(function)

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