std:: atomic_flag_notify_one
|
|
Defined in header
<atomic>
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||
void
atomic_flag_notify_one
(
std::
atomic_flag
*
object
)
noexcept
;
|
(1) | (since C++20) |
void
atomic_flag_notify_one
(
volatile
std::
atomic_flag
*
object
)
noexcept
;
|
(2) | (since C++20) |
Performs atomic notifying operations.
If there is a thread blocked in an atomic waiting operation (i.e. std::atomic_flag_wait() , std::atomic_flag_wait_explicit() , or std::atomic_flag::wait() ) on * object , then unblocks at least one such thread; otherwise does nothing.
Equivalent to object - > notify_one ( ) .
Parameters
object | - |
pointer to the
atomic_flag
object to notify
|
Return value
(none)
Notes
This form of change-detection is often more efficient than simple polling or pure spinlocks.
Example
This section is incomplete
Reason: no example |
See also
(C++20)
|
notifies at least one thread waiting on the atomic object
(public member function of
std::atomic_flag
)
|
(C++20)
|
notifies all threads blocked waiting on the atomic object
(public member function of
std::atomic_flag
)
|
(C++20)
|
notifies all threads blocked in atomic_flag_wait
(function) |