/**
* Adds an entry at the end of the list of which this item is the head. @GuardedBy("manager.lock")
*/
final void addLast(InternalJob entry) {
InternalJob last = this;
// find the end of the queue
while (last.previous != null) last = last.previous;
// add the new entry to the end of the queue
last.previous = entry;
entry.next = last;
entry.previous = null;
}
/** Returns true if this job conflicts with the given job, and false otherwise. */
final boolean isConflicting(InternalJob otherJob) {
ISchedulingRule otherRule = otherJob.getRule();
if (schedulingRule == null || otherRule == null) return false;
// if one of the rules is a compound rule, it must be asked the question.
if (schedulingRule.getClass() == MultiRule.class)
return schedulingRule.isConflicting(otherRule);
return otherRule.isConflicting(schedulingRule);
}
/** Removes this entry from any list it belongs to. Returns the receiver. */
final InternalJob remove() {
if (next != null) next.setPrevious(previous);
if (previous != null) previous.setNext(next);
next = previous = null;
return this;
}