/**
* Schedule a task for execution at varying intervals. After execution, the task will get
* rescheduled after {@link org.jgroups.util.HashedTimingWheel.Task#nextInterval()} milliseconds.
* The task is neve done until nextInterval() return a value <= 0 or the task is cancelled.
*
* @param task the task to execute Task is rescheduled relative to the last time it
* <i>actually</i> started execution
* <p><tt>false</tt>:<br>
* Task is scheduled relative to its <i>last</i> execution schedule. This has the effect that
* the time between two consecutive executions of the task remains the same.
* <p>Note that relative is always true; we always schedule the next execution relative to the
* last *actual*
*/
public Future<?> scheduleWithDynamicInterval(Task task) {
if (task == null) throw new NullPointerException();
if (isShutdown() || !running) return null;
RecurringTask task_wrapper = new DynamicIntervalTask(task);
task_wrapper.doSchedule(); // calls schedule() in ScheduledThreadPoolExecutor
return task_wrapper;
}
public Future<?> scheduleAtFixedRate(
Runnable task, long initial_delay, long delay, TimeUnit unit) {
if (task == null) throw new NullPointerException();
if (isShutdown() || !running) return null;
RecurringTask wrapper = new FixedRateTask(task, delay);
wrapper.doSchedule(initial_delay);
return wrapper;
}