std::atomic_flag::test

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.

If order is one of std::memory_order_release and std::memory_order_acq_rel, the behavior is undefined.

Parameters

Return value

The value atomically read.

Example

See also