atomic_flag_clear, atomic_flag_clear_explicit

Defined in header <stdatomic.h>
void atomic_flag_clear ( volatile atomic_flag * obj ) ;	(1)	(since C11)
void atomic_flag_clear_explicit ( volatile atomic_flag * obj, memory_order order ) ;	(2)	(since C11)

Atomically changes the state of a atomic_flag pointed to by obj to clear ( false ). The first version orders memory accesses according to memory_order_seq_cst , the second version orders memory accesses according to order .

The argument is pointer to a volatile atomic flag to accept addresses of both non-volatile and volatile (e.g. memory-mapped I/O) atomic flags.

Parameters

obj	-	pointer to the atomic flag object to modify
order	-	the memory synchronization ordering for this operation: all values are permitted

Return value

(none)

References

See also

atomic_flag_test_and_set atomic_flag_test_and_set_explicit (C11)	sets an atomic_flag to true and returns the old value (function)
C++ documentation for atomic_flag_clear , atomic_flag_clear_explicit