/* Helper method to reschedule waiting jobs */
protected void rescheduleJobs() {
Collections.sort(waitingQueue, comparator);
boolean success = true;
Iterator<Job> it = this.waitingQueue.iterator();
while (it.hasNext() && success) {
Job j = it.next();
if (j.hasReserved()) {
continue;
}
success = super.startJob(j);
if (success) {
this.runningQueue.add(j);
it.remove();
} else {
enqueueJob(j);
}
}
}
/**
* This method iterates the waiting jobs list and for each job, it returns the allocated time slot
* and resources to the pool.
*
* @param time consider jobs whose start time is further than time
* @return a collection with the IDs of the affected jobs
*/
protected Collection<Integer> compressSchedule(long time) {
Collection<Integer> jobIds = new LinkedList<Integer>();
// jobs with reservation cannot be moved
ResourcePool rlist = super.serverAttributes().getResourcePool();
Iterator<Job> it = this.waitingQueue.iterator();
while (it.hasNext()) {
Job j = it.next();
// Skip as it cannot get better than this.
if (j.getStartTime() <= time || j.hasReserved()) {
continue;
}
long startTime = Math.max(0, j.getStartTime());
long finishTime = j.getStartTime() + j.getDuration();
RangeList res = j.getResourceRanges();
rlist.releaseResources(startTime, finishTime, res);
jobIds.add(j.getId());
}
return jobIds;
}