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 //Schedule schedule = this.scheduling.elementAt(coreNum);
242 for(int j = 0; j < nobjs.size(); j++) {
243 ObjectSimulator nobj = nobjs.elementAt(j);
244 action.addNewObj(nobj.getCd(), Integer.valueOf(1));
245 // send the new object to target core according to pre-decide scheduling
246 Queue<Integer> cores = cs.getTargetCores(nobj.getCurrentFS());
248 // this obj will reside on this core
251 Integer targetCore = cores.poll();
252 if(targetCore == coreNum) {
253 // this obj will reside on this core
256 if(!transObjQueues.containsKey(targetCore)) {
257 transObjQueues.put(targetCore, new LinkedList<ObjectInfo>());
259 Queue<ObjectInfo> tmpqueue = transObjQueues.get(targetCore);
260 tmpqueue.add(new ObjectInfo(nobj));
262 // enqueue this core again
263 cores.add(targetCore);
265 // check if this object becoming shared or not
266 Vector<Integer> allycores = cs.getAllyCores(nobj.getCurrentFS());
267 if(allycores != null) {
268 nobj.setShared(true);
269 for(int k = 0; k < allycores.size(); ++k) {
270 Integer allyCore = allycores.elementAt(k);
271 if(allyCore == coreNum) {
274 if(!transObjQueues.containsKey(allyCore)) {
275 transObjQueues.put(allyCore, new LinkedList<ObjectInfo>());
277 Queue<ObjectInfo> tmpqueue = transObjQueues.get(allyCore);
278 ObjectInfo nobjinfo = new ObjectInfo(nobj);
279 if(!tmpqueue.contains(nobjinfo)) {
280 tmpqueue.add(nobjinfo);
287 cp.addAction(action);
288 Vector<ObjectSimulator> transObjs = cs.finishTask();
289 if(transObjs != null) {
290 for(int j = 0; j < transObjs.size(); j++) {
291 ObjectSimulator tobj = transObjs.elementAt(j);
292 // send the object to target core according to pre-decide scheduling
293 Queue<Integer> cores = cs.getTargetCores(tobj.getCurrentFS());
294 tobj.setCurrentFS(cs.getTargetFState(tobj.getCurrentFS()));
296 // this obj will reside on this core
299 Integer targetCore = cores.peek();
300 if(targetCore == coreNum) {
301 // this obj will reside on this core
304 if(!transObjQueues.containsKey(targetCore)) {
305 transObjQueues.put(targetCore, new LinkedList<ObjectInfo>());
307 Queue<ObjectInfo> tmpqueue = transObjQueues.get(targetCore);
308 tmpqueue.add(new ObjectInfo(tobj));
311 // check if this object becoming shared or not
312 Vector<Integer> allycores = cs.getAllyCores(tobj.getCurrentFS());
313 if(allycores != null) {
314 tobj.setShared(true);
315 for(int k = 0; k < allycores.size(); ++k) {
316 Integer allyCore = allycores.elementAt(k);
317 if(allyCore == coreNum) {
320 if(!transObjQueues.containsKey(allyCore)) {
321 transObjQueues.put(allyCore, new LinkedList<ObjectInfo>());
323 Queue<ObjectInfo> tmpqueue = transObjQueues.get(allyCore);
324 ObjectInfo nobjinfo = new ObjectInfo(tobj);
325 if(!tmpqueue.contains(nobjinfo)) {
326 tmpqueue.add(nobjinfo);
333 // add 'transport' tasks
334 Iterator it_entries = transObjQueues.entrySet().iterator();
335 while(it_entries.hasNext()) {
336 Entry<Integer, Queue<ObjectInfo>> tmpentry = (Entry<Integer, Queue<ObjectInfo>>)it_entries.next();
337 Integer tmpCoreNum = tmpentry.getKey();
338 Queue<ObjectInfo> nobjs = tmpentry.getValue();
339 TransTaskSimulator tmptask = new TransTaskSimulator(cs, tmpCoreNum, nobjs);
340 this.tasks.add(tmptask);
342 // Choose a new task for this core
343 TaskSimulator newTask = cs.process();
344 if(newTask != null) {
345 this.tasks.add(newTask);
346 // add a TASKSTART action into this checkpoint
347 action = new Action(coreNum, Action.TASKSTART);
348 action.setTd(cs.getRtask().getTd());
349 cp.addAction(action);
351 } else if (task.getCurrentRun().getExetype() == 1) {
352 action = new Action(coreNum, Action.TASKABORT);
353 action.setTd(cs.getRtask().getTd());
354 cp.addAction(action);
355 } else if (task.getCurrentRun().getExetype() == 2) {
356 action = new Action(coreNum, Action.TASKREMOVE);
357 action.setTd(cs.getRtask().getTd());
358 cp.addAction(action);
362 this.checkpoints.add(cp);
365 SchedulingUtil.printSimulationResult("SimulatorResult_" + this.invoketime + ".dot", this.processTime,
366 this.coreNum, this.checkpoints);
367 System.out.println("Simulate scheduling #" + this.invoketime + ": ");
368 System.out.println("\tTotal execution time is: " + this.processTime);
369 System.out.println("\tUtility of cores: ");
370 for(int j = 0; j < this.cores.size(); j++) {
371 System.out.println("\t\tcore" + j + ": " + getUtility(j) + "%");
373 return this.processTime;
376 public class CheckPoint {
377 private int timepoint;
378 private Vector<Action> actions;
380 public CheckPoint(int timepoint) {
382 this.timepoint = timepoint;
383 this.actions = new Vector<Action>();
386 public Vector<Action> getActions() {
390 public void addAction(Action action) {
391 this.actions.add(action);
394 public int getTimepoint() {
399 public class Action {
400 public static final int ADDOBJ = 0;
401 public static final int TASKFINISH = 1;
402 public static final int TFWITHOBJ = 2;
403 public static final int TASKSTART = 3;
404 public static final int TASKABORT = 4;
405 public static final int TASKREMOVE = 5;
409 private TaskDescriptor td;
410 private Hashtable<ClassDescriptor, Integer> nObjs;
412 private ClassDescriptor transObj;
414 public Action(int coreNum, int type) {
416 this.coreNum = coreNum;
419 if(this.type == TFWITHOBJ) {
420 this.nObjs = new Hashtable<ClassDescriptor, Integer>();
425 this.transObj = null;
428 public Action(int coreNum, int type, int objNum, ClassDescriptor transObj) {
430 assert(type == ADDOBJ);
431 this.coreNum = coreNum;
434 this.nObjNum = objNum;
435 this.transObj = transObj;
438 public void addNewObj(ClassDescriptor cd, Integer num) {
439 assert(this.type == TFWITHOBJ);
441 if(this.nObjs.containsKey(cd)) {
442 Integer sum = this.nObjs.get(cd) + num;
443 this.nObjs.put(cd, sum);
445 this.nObjs.put(cd, num);
449 public int getCoreNum() {
453 public int getType() {
457 public int getNObjNum() {
461 public ClassDescriptor getTransObj() {
465 public TaskDescriptor getTd() {
469 public void setTd(TaskDescriptor td) {
473 public Hashtable<ClassDescriptor, Integer> getNObjs() {