std::atomic_flag_clear, std::atomic_flag_clear_explicit
From cppreference.com
Defined in header <atomic>
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(1) | (since C++11) | |
void atomic_flag_clear( volatile std::atomic_flag* p ) noexcept; |
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void atomic_flag_clear( std::atomic_flag* p ) noexcept; |
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(2) | (since C++11) | |
void atomic_flag_clear_explicit( volatile std::atomic_flag* p, std::memory_order order ) noexcept; |
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void atomic_flag_clear_explicit( std::atomic_flag* p, std::memory_order order ) noexcept; |
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Atomically changes the state of a std::atomic_flag pointed to by p
to clear (false).
Parameters
p | - | pointer to std::atomic_flag to access |
order | - | the memory synchronization ordering for this operation: only std::memory_order_relaxed, std::memory_order_release, or std::memory_order_seq_cst are permitted. |
Return value
none.
Possible implementation
First version |
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void atomic_flag_clear(volatile std::atomic_flag* p) { p->clear(); } |
Second version |
void atomic_flag_clear(std::atomic_flag* p) { p->clear(); } |
Third version |
void atomic_flag_clear_explicit(volatile std::atomic_flag* p, std::memory_order order) { p->clear(order); } |
Fourth version |
void atomic_flag_clear_explicit(std::atomic_flag* p, std::memory_order order) { p->clear(order); } |
See also
(C++11) |
the lock-free boolean atomic type (class) |
atomically sets the flag to true and returns its previous value (function) | |
(C++11) |
defines memory ordering constraints for the given atomic operation (enum) |