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) and returns the value it held before.
| order | - | the memory synchronization ordering for this operation |
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) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/atomic/atomic_flag/test_and_set