std::atomic_flag::test_and_set

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< cpp‎ | atomic‎ | atomic flag
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std::atomic_flag
Defined in header <atomic>
bool test_and_set( std::memory_order order =
std::memory_order_seq_cst ) volatile noexcept ;
(1) (since C++11)
bool test_and_set( std::memory_order order =
std::memory_order_seq_cst ) noexcept ;
(2) (since C++11)

Atomically changes the state of a std::atomic_flag to set (true

Parameters

order - the memory synchronization order

See also

 atomically sets flag to false
(public member function)
(C++11)(C++11)
 atomically sets the flag to true and returns its previous value
(function)
(C++11)
 defines memory ordering constraints for the given atomic operation
(enum)
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