/**
* Requeues a periodic task unless current run state precludes it. Same idea as delayedExecute
* except drops task rather than rejecting.
*
* @param task the task
*/
void reExecutePeriodic(RunnableScheduledFuture<?> task) {
if (canRunInCurrentRunState(true)) {
super.getQueue().add(task);
if (!canRunInCurrentRunState(true) && remove(task)) task.cancel(false);
else ensurePrestart();
}
}
/**
* Main execution method for delayed or periodic tasks. If pool is shut down, rejects the task.
* Otherwise adds task to queue and starts a thread, if necessary, to run it. (We cannot prestart
* the thread to run the task because the task (probably) shouldn't be run yet,) If the pool is
* shut down while the task is being added, cancel and remove it if required by state and
* run-after-shutdown parameters.
*
* @param task the task
*/
private void delayedExecute(RunnableScheduledFuture<?> task) {
if (isShutdown()) reject(task);
else {
super.getQueue().add(task);
if (isShutdown() && !canRunInCurrentRunState(task.isPeriodic()) && remove(task))
task.cancel(false);
else ensurePrestart();
}
}