| (1) | (since C++11) |
1 | void atomic_flag_clear( volatile std::atomic_flag* p );
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1 | void atomic_flag_clear( std::atomic_flag* p );
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| (2) | (since C++11) |
1 2 | void atomic_flag_clear_explicit( volatile std::atomic_flag* p,
std::memory_order order );
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1 2 | 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).
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. |
Return value
none.
Exceptions
Possible implementation
| First version |
|---|
1 2 3 4 | void atomic_flag_clear(volatile std::atomic_flag* p)
{
p->clear();
}
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| Second version |
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1 2 3 4 | void atomic_flag_clear(std::atomic_flag* p)
{
p->clear();
}
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| Third version |
|---|
1 2 3 4 5 | void atomic_flag_clear_explicit(volatile std::atomic_flag* p,
std::memory_order order)
{
p->clear(order);
}
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| Fourth version |
|---|
1 2 3 4 5 | void atomic_flag_clear_explicit(std::atomic_flag* p,
std::memory_order order)
{
p->clear(order);
}
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See also
| | the lock-free boolean atomic type
(class) |
| | atomically sets the flag to true and returns its previous value
(function) |
| | defines memory ordering constraints for the given atomic operation
(typedef) |
C documentation for atomic_flag_clear, atomic_flag_clear_explicit |
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