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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| using System.Collections.Generic; | ||
| using UnityEngine; | ||
|
|
||
| public class SJFPreemptiveScheduler : MonoBehaviour | ||
| { | ||
| public Scheduler scheduler; | ||
| public ChartMaker chartMaker; | ||
| private List<PropertiesData> arrived; | ||
| private List<PropertiesData> waiting; | ||
| bool running = false; | ||
| bool processing = false; | ||
| PropertiesData CurrentlyProcessing; | ||
| private float ProcessorFreeAt = 0.0f; | ||
| private float ProcessStartedAt = 0.0f; | ||
| public void run() | ||
| { | ||
| waiting = new List<PropertiesData>(); | ||
| arrived = new List<PropertiesData>(); | ||
| foreach (var _process in scheduler.ProcessList) | ||
| { | ||
| waiting.Add(_process); | ||
| } | ||
| running = true; | ||
| } | ||
| void Update() | ||
| { | ||
| if (running) | ||
| { | ||
| for (int i = 0; i < waiting.Count; i++) | ||
| { | ||
| PropertiesData propertiesData = waiting[i]; | ||
| if (scheduler.SchedulerTime >= propertiesData.ArrivalTime) | ||
| { | ||
| arrived.Add(propertiesData); | ||
| waiting.Remove(propertiesData); | ||
| } | ||
| } | ||
| if (!processing) | ||
| { | ||
| if (arrived.Count > 0) | ||
| { | ||
| float minBurst = arrived[0].BurstTime; | ||
| CurrentlyProcessing = arrived[0]; | ||
| for (int i = 0; i < arrived.Count; i++) | ||
| { | ||
| PropertiesData processes = arrived[i]; | ||
| if (processes.BurstTime < minBurst) | ||
| { | ||
| minBurst = arrived[i].BurstTime; | ||
| CurrentlyProcessing = arrived[i]; | ||
| } | ||
| } | ||
| arrived.Remove(CurrentlyProcessing); | ||
| processing = true; | ||
| ProcessorFreeAt = Mathf.Min(CurrentlyProcessing.BurstTime, 1); | ||
| ProcessStartedAt = scheduler.SchedulerTime; | ||
| chartMaker.GenerateChartElement(CurrentlyProcessing.ProcessName, scheduler.SchedulerTime); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| ProcessorFreeAt -= Time.deltaTime * Time.timeScale; | ||
| if (ProcessorFreeAt <= 0) | ||
| { | ||
| if (CurrentlyProcessing.remainingBurstTime <= 0) | ||
| { | ||
| scheduler.makeSummary(CurrentlyProcessing); | ||
| } | ||
| else | ||
| { | ||
| CurrentlyProcessing.remainingBurstTime -= (scheduler.SchedulerTime - ProcessStartedAt); //1 | ||
| arrived.Add(CurrentlyProcessing); | ||
| } | ||
| processing = false; | ||
| if (waiting.Count == 0 && arrived.Count == 0) | ||
| { | ||
| running = false; | ||
| scheduler.running = false; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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