std::atomic_flag::clear
From cppreference.com
< cpp | atomic | atomic flag
C++
Concurrency support library
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std::atomic_flag
Member functions | ||||
atomic_flag::clear | ||||
(C++20)
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(C++20)
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(C++20)
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(C++20)
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Defined in header <atomic>
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void clear(
std::memory_order order =
std::memory_order_seq_cst ) volatile noexcept ; |
(1) | (since C++11) |
void clear(
std::memory_order order =
std::memory_order_seq_cst ) noexcept ; |
(2) | (since C++11) |
Atomically changes the state of a std::atomic_flag to clear (false
If order is one of std::memory_order_consume, std::memory_order_acquire and std::memory_order_acq_rel
Parameters
order | - | the memory synchronization ordering |
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR | Applied to | Behavior as published | Correct behavior |
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LWG 2138 | C++11 | order could be std::memory_order_consume | the behavior is undefined in this case |
See also
atomically sets the flag to true and obtains its previous value (public member function) |
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(C++11)(C++11)
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atomically sets the value of the flag to false (function) |
(C++11)
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defines memory ordering constraints for the given atomic operation (enum) |