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 ); |
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| void atomic_flag_clear( std::atomic_flag* p ); |
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| (2) | (since C++11) | |
| void atomic_flag_clear_explicit( volatile std::atomic_flag* p, std::memory_order order ); |
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| void atomic_flag_clear_explicit( std::atomic_flag* p, std::memory_order order ); |
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Atomically changes the state of a std::atomic_flag pointed to by p to clear (false).
Contents |
[edit] Parameters
| p | - | pointer to std::atomic_flag to access |
| order | - | the memory sycnhronization ordering for this operation: only std::memory_order_relaxed, std::memory_order_acquire, or std::memory_order_seq_cst are permitted. |
[edit] Return value
none.
[edit] Exceptions
noexcept specification:
noexcept
[edit] Possible implementation
| First version |
|---|
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); } |
[edit] 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 (typedef) |
| C documentation for atomic_flag_clear, atomic_flag_clear_explicit
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