public void Demote(Job j, int origin)
{
if (origin == this._queues.Length - 1)
{
this[QUEUE_TIME_16].Enqueue(j);
}
else
{
this[origin + 1].Enqueue(j);
#if VERBOSE
Verbose.Queue(j.Name, this.GetQueueName(origin), this.GetQueueName(origin + 1));
#endif
}
}
public void Enqueue(Job j)
{
_jobs.Enqueue(j);
}
public void Enqueue(Job j)
{
this[QUEUE_READY].Enqueue(j);
}
public int RetriveJob(ref Job j, ref int queueID)
{
for (int i = 1; i < this._queues.Length; i++)
{
if (!this[i].Empty)
{
j = this[i].Dequeue();
queueID = i;
return this[i].ProcessTime;
}
}
return 0;
}
/// <summary>
/// Worker function for processing jobs in the queue as well as queue scheduling.
/// </summary>
private static void Worker()
{
// How long to hold a Job on the worker
// before queueing it on the next queue.
int holdJobTime = 0;
// The Job currently being worked on.
Job current = new Job();
// Extra things to track time.
int lastTime = workerTime;
// ID of the queue where the current job came from.
int origin = 0;
while (true)
{
// Check to see if there's anything in the ready queue
// that needs to be added on to the 1 process time queue.
while (js.QueueOnTime(workerTime)) ;
// Check to see if there is a job to be working on
// by testing to see if holdJobTime has a value greater than 0.
if (holdJobTime == 0 && js.JobAvaliable)
{
// Retrive for how long the current job should run for and
// at what time the job should be moved to the next queue if it hasn't completed yet.
holdJobTime = workerTime + js.RetriveJob(ref current, ref origin);
#if VERBOSE
Verbose.Retrive(js.GetQueueName(origin), current.Name, holdJobTime);
#endif
}
else
{
// Condition to maintain proper stepping in each
// time frame.
if (lastTime != workerTime && current.Name != "")
{
#if VERBOSE
Verbose.Process(current.Name, current.RemainingTime);
#endif
// Process the current job for 1 time unit.
current.Process();
// Create output strings
Verbose.TimeLine += workerTime + " ";
if (workerTime.ToString().Length > current.Name.Length)
Verbose.JobLine += AddSpaces(current.Name, workerTime.ToString().Length);
else
Verbose.JobLine += current.Name + " ";
#if !VERBOSE
Console.Clear();
// Instruction repeated here so that they will be redrawn with the other lines.
Console.WriteLine("Press \'Q\' to exit.\nPRess \'S\' to pause/suspend operations.\nPress \'R\' to resume operations.");
Console.WriteLine(Verbose.JobLine);
Console.WriteLine(Verbose.TimeLine);
#endif
// If there isn't any time left for the current job
// set the time to hold the job equal to the current time
// This will force the next job to come up on the next time frame.
if (current.RemainingTime <= 0)
holdJobTime = workerTime;
// If there are no jobs avaliable, the ready queue is empty, and the
// current job has not time left to process, then exit the thread (while loop).
if (!js.JobAvaliable && js.ReadyQueueEmpty && current.RemainingTime <= 0)
{
break;
}
// The current time as been processed and we move
// on to the next time frame.
lastTime = workerTime;
}
// If we're still in the same time frame.
else
{
// If the time to hold the current job for
// is equal to the current time then demote the current job to the next queue
// if it has more time left to process, otherwise, just reset the time to hold
// the job back to 0.
if (holdJobTime == workerTime)
{
if (current.RemainingTime > 0)
js.Demote(current, origin);
holdJobTime = 0;
}
}
}
}
threadClock.Abort();
Console.WriteLine("All jobs complete.\nPress Q to exit.");
}