1 package Analysis.Scheduling;
3 import java.util.Hashtable;
4 import java.util.Iterator;
5 import java.util.LinkedList;
6 import java.util.Queue;
7 import java.util.Vector;
8 import java.util.Map.Entry;
10 import Analysis.TaskStateAnalysis.FlagState;
11 import Analysis.TaskStateAnalysis.TaskAnalysis;
12 import IR.ClassDescriptor;
14 import IR.TaskDescriptor;
17 public class ScheduleSimulator {
19 private Vector<Schedule> scheduling;
20 private Vector<CoreSimulator> cores;
21 private Vector<TaskSimulator> tasks;
22 private Vector<CheckPoint> checkpoints;
23 private int processTime;
24 private int invoketime;
27 TaskAnalysis taskanalysis;
29 public ScheduleSimulator(int coreNum, State state, TaskAnalysis taskanalysis) {
31 this.coreNum = coreNum;
32 this.scheduling = null;
35 this.checkpoints = null;
39 this.taskanalysis = taskanalysis;
42 public ScheduleSimulator(int coreNum, Vector<Schedule> scheduling, State state, TaskAnalysis taskanalysis) {
44 this.coreNum = coreNum;
45 this.scheduling = scheduling;
46 this.cores = new Vector<CoreSimulator>(this.coreNum);
47 for(int i = 0; i < this.coreNum; i++) {
48 this.cores.add(new CoreSimulator(FIFORSchedule.getFIFORSchedule(), i));
50 this.tasks = new Vector<TaskSimulator>();
51 this.checkpoints = null;
55 this.taskanalysis = taskanalysis;
59 public Vector<CheckPoint> getCheckpoints() {
63 public int getCoreNum() {
67 public void setCoreNum(int coreNum) {
68 this.coreNum = coreNum;
69 if(this.cores != null) {
72 this.cores = new Vector<CoreSimulator>(this.coreNum);
73 for(int i = 0; i < this.coreNum; i++) {
74 this.cores.add(new CoreSimulator(FIFORSchedule.getFIFORSchedule(), i));
76 if(this.scheduling != null) {
81 public int getUtility(int index) {
82 return (this.cores.elementAt(index).getActiveTime() * 100) / this.processTime;
85 public Vector<Schedule> getScheduling() {
89 public void setScheduling(Vector<Schedule> scheduling) {
90 this.scheduling = scheduling;
91 if(this.tasks == null) {
92 this.tasks = new Vector<TaskSimulator>();
96 if(this.cores != null) {
97 for(int i = 0; i < this.coreNum; i++) {
98 CoreSimulator core = this.cores.elementAt(i);
100 core.setRSchedule(FIFORSchedule.getFIFORSchedule());
103 this.cores = new Vector<CoreSimulator>(this.coreNum);
104 for(int i = 0; i < this.coreNum; i++) {
105 this.cores.add(new CoreSimulator(FIFORSchedule.getFIFORSchedule(), i));
112 public void applyScheduling() {
113 assert(this.state != null);
115 for(int i = 0; i < this.scheduling.size(); i++) {
116 Schedule temp = this.scheduling.elementAt(i);
117 CoreSimulator cs = this.cores.elementAt(temp.getCoreNum());
118 cs.deployTasks(temp.getTasks());
119 cs.setTargetCSimulator(temp.getTargetCoreTable());
120 cs.setAllyCSimulator(temp.getAllyCoreTable());
121 cs.setTargetFState(temp.getTargetFStateTable());
123 // inject a Startup Object to each core
124 for(int i = 0; i < this.coreNum; i++) {
125 ClassDescriptor startupobject=(ClassDescriptor)state.getClassSymbolTable().get(TypeUtil.StartupClass);
126 FlagState fsstartup = (FlagState)taskanalysis.getRootNodes(startupobject).elementAt(0);
127 ObjectSimulator newObj = new ObjectSimulator(startupobject, fsstartup);
128 this.cores.elementAt(i).addObject(newObj);
132 public Vector<TaskSimulator> getTasks() {
136 public int process() {
137 assert(this.scheduling != null);
141 if(this.checkpoints == null) {
142 this.checkpoints = new Vector<CheckPoint>();
144 this.checkpoints.clear();
147 this.processTime = 0;
149 // first decide next task to execute on each core
151 for(i = 0; i < this.cores.size(); i++) {
152 CoreSimulator cs = this.cores.elementAt(i);
153 TaskSimulator task = cs.process();
155 this.tasks.add(task);
159 // add STARTTASK checkpoint for all the initial tasks
160 CheckPoint cp = new CheckPoint(this.processTime);
161 for(i = 0; i < this.tasks.size(); i++) {
162 TaskSimulator task = this.tasks.elementAt(i);
163 Action action = new Action(task.getCs().getCoreNum(), Action.TASKSTART);
164 action.setTd(task.getTd());
165 cp.addAction(action);
167 this.checkpoints.add(cp);
170 // if no more tasks on each core, simulation finish
171 if(this.tasks.size() == 0) {
175 // for each task in todo queue, decide the execution path of this time
176 // according to statistic information
177 //int index = 0; // indicate the task to finish first
178 int finishTime = Integer.MAX_VALUE;
179 Vector<TaskSimulator> finishTasks = new Vector<TaskSimulator>();
180 for(i = 0; i < this.tasks.size(); i++) {
181 TaskSimulator task = this.tasks.elementAt(i);
183 int tempTime = task.getCurrentRun().getFinishTime();
184 if(tempTime < finishTime) {
185 finishTime = tempTime;
187 finishTasks.add(task);
188 } else if (tempTime == finishTime) {
189 finishTasks.add(task);
192 for(i = 0; i < this.tasks.size(); i++) {
193 TaskSimulator task = this.tasks.elementAt(i);
194 if(!finishTasks.contains(task)) {
195 task.getCs().updateTask(finishTime);
198 this.processTime += finishTime;
199 cp = new CheckPoint(this.processTime);
200 Action action = null;
201 for(i = 0; i < finishTasks.size(); i++) {
202 TaskSimulator task = finishTasks.elementAt(i);
203 this.tasks.removeElement(task);
204 if(task instanceof TransTaskSimulator) {
205 TransTaskSimulator tmptask = (TransTaskSimulator)task;
206 // add ADDOBJ task to targetCore
207 int targetCoreNum = tmptask.getTargetCoreNum();
208 ObjectInfo objinfo = tmptask.refreshTask();
209 ObjectSimulator nobj = objinfo.obj;
210 FlagState fs = objinfo.fs;
211 int version = objinfo.version;
212 this.cores.elementAt(targetCoreNum).addObject(nobj, fs, version);
213 action = new Action(targetCoreNum, Action.ADDOBJ, 1, nobj.getCd());
214 cp.addAction(action);
215 if(!tmptask.isFinished()) {
216 // still have some objects to be transpotted
217 this.tasks.add(task);
219 if(this.cores.elementAt(targetCoreNum).getRtask() == null) {
220 TaskSimulator newTask = this.cores.elementAt(targetCoreNum).process();
221 if(newTask != null) {
222 this.tasks.add(newTask);
223 // add a TASKSTART action into this checkpoint
224 action = new Action(targetCoreNum, Action.TASKSTART);
225 action.setTd(newTask.getTd());
226 cp.addAction(action);
230 CoreSimulator cs = task.getCs();
231 int coreNum = cs.getCoreNum();
232 if(task.getCurrentRun().getExetype() == 0) {
233 Hashtable<Integer, Queue<ObjectInfo>> transObjQueues = new Hashtable<Integer, Queue<ObjectInfo>>();
234 if(task.getCurrentRun().getNewObjs() == null) {
235 action = new Action(coreNum, Action.TASKFINISH);
236 action.setTd(cs.getRtask().getTd());
238 action = new Action(coreNum, Action.TFWITHOBJ);
239 action.setTd(cs.getRtask().getTd());
240 Vector<ObjectSimulator> nobjs = task.getCurrentRun().getNewObjs();
241 for(int j = 0; j < nobjs.size(); j++) {
242 ObjectSimulator nobj = nobjs.elementAt(j);
243 action.addNewObj(nobj.getCd(), Integer.valueOf(1));
244 // send the new object to target core according to pre-decide scheduling
245 Queue<Integer> cores = cs.getTargetCores(nobj.getCurrentFS());
247 // this obj will reside on this core
250 Integer targetCore = cores.poll();
251 if(targetCore == coreNum) {
252 // this obj will reside on this core
255 if(!transObjQueues.containsKey(targetCore)) {
256 transObjQueues.put(targetCore, new LinkedList<ObjectInfo>());
258 Queue<ObjectInfo> tmpqueue = transObjQueues.get(targetCore);
259 tmpqueue.add(new ObjectInfo(nobj));
262 // enqueue this core again
263 cores.add(targetCore);
266 // check if this object becoming shared or not
267 Vector<Integer> allycores = cs.getAllyCores(nobj.getCurrentFS());
268 if(allycores != null) {
269 nobj.setShared(true);
270 for(int k = 0; k < allycores.size(); ++k) {
271 Integer allyCore = allycores.elementAt(k);
272 if(allyCore == coreNum) {
275 if(!transObjQueues.containsKey(allyCore)) {
276 transObjQueues.put(allyCore, new LinkedList<ObjectInfo>());
278 Queue<ObjectInfo> tmpqueue = transObjQueues.get(allyCore);
279 ObjectInfo nobjinfo = new ObjectInfo(nobj);
280 if(!tmpqueue.contains(nobjinfo)) {
281 tmpqueue.add(nobjinfo);
291 cp.addAction(action);
292 Vector<ObjectSimulator> transObjs = cs.finishTask();
293 if(transObjs != null) {
294 for(int j = 0; j < transObjs.size(); j++) {
295 ObjectSimulator tobj = transObjs.elementAt(j);
296 // send the object to target core according to pre-decide scheduling
297 Queue<Integer> cores = cs.getTargetCores(tobj.getCurrentFS());
298 tobj.setCurrentFS(cs.getTargetFState(tobj.getCurrentFS()));
300 // this obj will reside on this core
303 Integer targetCore = cores.peek();
304 if(targetCore == coreNum) {
305 // this obj will reside on this core
308 if(!transObjQueues.containsKey(targetCore)) {
309 transObjQueues.put(targetCore, new LinkedList<ObjectInfo>());
311 Queue<ObjectInfo> tmpqueue = transObjQueues.get(targetCore);
312 tmpqueue.add(new ObjectInfo(tobj));
317 // check if this object becoming shared or not
318 Vector<Integer> allycores = cs.getAllyCores(tobj.getCurrentFS());
319 if(allycores != null) {
320 tobj.setShared(true);
321 for(int k = 0; k < allycores.size(); ++k) {
322 Integer allyCore = allycores.elementAt(k);
323 if(allyCore == coreNum) {
326 if(!transObjQueues.containsKey(allyCore)) {
327 transObjQueues.put(allyCore, new LinkedList<ObjectInfo>());
329 Queue<ObjectInfo> tmpqueue = transObjQueues.get(allyCore);
330 ObjectInfo nobjinfo = new ObjectInfo(tobj);
331 if(!tmpqueue.contains(nobjinfo)) {
332 tmpqueue.add(nobjinfo);
342 // add 'transport' tasks
343 Iterator it_entries = transObjQueues.entrySet().iterator();
344 while(it_entries.hasNext()) {
345 Entry<Integer, Queue<ObjectInfo>> tmpentry = (Entry<Integer, Queue<ObjectInfo>>)it_entries.next();
346 Integer tmpCoreNum = tmpentry.getKey();
347 Queue<ObjectInfo> nobjs = tmpentry.getValue();
348 TransTaskSimulator tmptask = new TransTaskSimulator(cs, tmpCoreNum, nobjs);
349 this.tasks.add(tmptask);
353 transObjQueues = null;
354 } else if (task.getCurrentRun().getExetype() == 1) {
355 action = new Action(coreNum, Action.TASKABORT);
356 action.setTd(cs.getRtask().getTd());
357 cp.addAction(action);
358 Vector<ObjectSimulator> transObjs = cs.finishTask();
359 } else if (task.getCurrentRun().getExetype() == 2) {
360 action = new Action(coreNum, Action.TASKREMOVE);
361 action.setTd(cs.getRtask().getTd());
362 cp.addAction(action);
363 Vector<ObjectSimulator> transObjs = cs.finishTask();
365 // Choose a new task for this core
366 TaskSimulator newTask = cs.process();
367 if(newTask != null) {
368 this.tasks.add(newTask);
369 // add a TASKSTART action into this checkpoint
370 action = new Action(coreNum, Action.TASKSTART);
371 action.setTd(cs.getRtask().getTd());
372 cp.addAction(action);
376 this.checkpoints.add(cp);
380 SchedulingUtil.printSimulationResult("SimulatorResult_" + this.invoketime + ".dot", this.processTime,
381 this.coreNum, this.checkpoints);
382 System.out.println("Simulate scheduling #" + this.invoketime + ": ");
383 System.out.println("\tTotal execution time is: " + this.processTime);
384 System.out.println("\tUtility of cores: ");
385 for(int j = 0; j < this.cores.size(); j++) {
386 System.out.println("\t\tcore" + j + ": " + getUtility(j) + "%");
388 return this.processTime;
391 public class CheckPoint {
392 private int timepoint;
393 private Vector<Action> actions;
395 public CheckPoint(int timepoint) {
397 this.timepoint = timepoint;
398 this.actions = new Vector<Action>();
401 public Vector<Action> getActions() {
405 public void addAction(Action action) {
406 this.actions.add(action);
409 public int getTimepoint() {
414 public class Action {
415 public static final int ADDOBJ = 0;
416 public static final int TASKFINISH = 1;
417 public static final int TFWITHOBJ = 2;
418 public static final int TASKSTART = 3;
419 public static final int TASKABORT = 4;
420 public static final int TASKREMOVE = 5;
424 private TaskDescriptor td;
425 private Hashtable<ClassDescriptor, Integer> nObjs;
427 private ClassDescriptor transObj;
429 public Action(int coreNum, int type) {
431 this.coreNum = coreNum;
434 if(this.type == TFWITHOBJ) {
435 this.nObjs = new Hashtable<ClassDescriptor, Integer>();
440 this.transObj = null;
443 public Action(int coreNum, int type, int objNum, ClassDescriptor transObj) {
445 assert(type == ADDOBJ);
446 this.coreNum = coreNum;
449 this.nObjNum = objNum;
450 this.transObj = transObj;
453 public void addNewObj(ClassDescriptor cd, Integer num) {
454 assert(this.type == TFWITHOBJ);
456 if(this.nObjs.containsKey(cd)) {
457 Integer sum = this.nObjs.get(cd) + num;
458 this.nObjs.put(cd, sum);
460 this.nObjs.put(cd, num);
464 public int getCoreNum() {
468 public int getType() {
472 public int getNObjNum() {
476 public ClassDescriptor getTransObj() {
480 public TaskDescriptor getTd() {
484 public void setTd(TaskDescriptor td) {
488 public Hashtable<ClassDescriptor, Integer> getNObjs() {