/**
* Obtain the default global timer from the current context. The globalTimer is created lazily so
* it is preferrable to fetch them out of the critical path.
*
* <p>The global timer will also ignore {@link Timer#cancel()} calls and should be cleaned using
* {@link #unregister()} ()}.
*
* <p>The default globalTimer is a {@link HashWheelTimer}. It is suitable for non blocking
* periodic work such as eventing, memory access, lock-free code, dispatching...
*
* @return the globalTimer, usually a {@link HashWheelTimer}
*/
public static Timer get() {
GlobalTimer t = context.timer;
while (null == t) {
t = new GlobalTimer();
if (!GLOBAL_TIMER.compareAndSet(context, null, t)) {
t = context.timer;
t._cancel();
} else {
t.start();
break;
}
}
return t;
}
/**
* Clean current global timer references and cancel the respective {@link Timer}. A new global
* timer can be assigned later with {@link #get()}.
*/
public static void unregister() {
GlobalTimer timer;
while ((timer = GLOBAL_TIMER.getAndSet(context, null)) != null) {
timer._cancel();
}
}
