public int compare(Job l, Job r) {
// equals first, Jobs generally don't override so this should be fast
// And this MUST be first so we can remove a job even if its timing has changed.
if (l.equals(r)) return 0;
// This is for _timedJobs, which always have a JobTiming.
// PoisonJob only goes in _readyJobs.
long ld = l.getTiming().getStartAfter() - r.getTiming().getStartAfter();
if (ld < 0) return -1;
if (ld > 0) return 1;
ld = l.getJobId() - r.getJobId();
if (ld < 0) return -1;
if (ld > 0) return 1;
return l.hashCode() - r.hashCode();
}
/** Blocking call to retrieve the next ready job */
Job getNext() {
while (_alive) {
try {
Job j = _readyJobs.take();
if (j.getJobId() == POISON_ID) break;
return j;
} catch (InterruptedException ie) {
}
}
if (_log.shouldLog(Log.WARN)) _log.warn("No longer alive, returning null");
return null;
}