DefaultNotificationService:

* Added Lock()/Unlock() for explicit locking by a service user.
* Added NotifyLocked() and made Notify() inline.
* Added HasListeners() so one can check whether there is a listener at all
  before preparing the event message.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34736 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/Notifications.cpp

@@ -173,10 +173,8 @@ DefaultNotificationService::~DefaultNotificationService()
 		common bit with this mask will receive the event.
 */
 void
-DefaultNotificationService::Notify(const KMessage& event, uint32 eventMask)
+DefaultNotificationService::NotifyLocked(const KMessage& event, uint32 eventMask)
 {
-	RecursiveLocker _(fLock);
-
 	// Note: The following iterations support that the listener removes itself
 	// in the hook method. That's a property of the DoublyLinkedList iterator.