Robust/src/Main/Main.java

   1 package Main;
   2
   3 import java.io.FileOutputStream;
   4 import java.io.PrintStream;
   5 import java.io.Reader;
   6 import java.io.BufferedReader;
   7 import java.io.FileReader;
   8 import java.io.FileInputStream;
   9 import java.util.Hashtable;
  10 import java.util.Iterator;
  11 import java.util.Set;
  12 import java.util.Vector;
  13
  14 import IR.Tree.ParseNode;
  15 import IR.Tree.BuildIR;
  16 import IR.Tree.SemanticCheck;
  17 import IR.Flat.BuildCodeMultiCore;
  18 import IR.Flat.BuildFlat;
  19 import IR.Flat.BuildCode;
  20 import IR.ClassDescriptor;
  21 import IR.State;
  22 import IR.TaskDescriptor;
  23 import IR.TypeUtil;
  24 import Analysis.Scheduling.Schedule;
  25 import Analysis.Scheduling.ScheduleAnalysis;
  26 import Analysis.Scheduling.ScheduleSimulator;
  27 import Analysis.TaskStateAnalysis.TaskAnalysis;
  28 import Analysis.TaskStateAnalysis.TaskTagAnalysis;
  29 import Analysis.TaskStateAnalysis.TaskGraph;
  30 import Analysis.CallGraph.CallGraph;
  31 import Analysis.TaskStateAnalysis.FEdge;
  32 import Analysis.TaskStateAnalysis.FlagState;
  33 import Analysis.TaskStateAnalysis.TagAnalysis;
  34 import Analysis.TaskStateAnalysis.GarbageAnalysis;
  35 import Analysis.TaskStateAnalysis.ExecutionGraph;
  36 import Analysis.TaskStateAnalysis.SafetyAnalysis;
  37 import Analysis.Locality.LocalityAnalysis;
  38 import Analysis.Locality.GenerateConversions;
  39 import Analysis.Prefetch.PrefetchAnalysis;
  40 import Analysis.FlatIRGraph.FlatIRGraph;
  41 import Analysis.OwnershipAnalysis.OwnershipAnalysis;
  42 import Interface.*;
  43 import Util.GraphNode;
  44 import Util.GraphNode.DFS;
  45 import Util.GraphNode.SCC;
  46
  47 public class Main {
  48
  49   /** Main method for the compiler.  */
  50
  51   public static void main(String args[]) throws Exception {
  52     String ClassLibraryPrefix="./ClassLibrary/";
  53     State state=new State();
  54
  55     for(int i=0; i<args.length; i++) {
  56       String option=args[i];
  57       if (option.equals("-precise"))
  58         IR.Flat.BuildCode.GENERATEPRECISEGC=true;
  59       else if (option.equals("-prefetch"))
  60         state.PREFETCH=true;
  61       else if (option.equals("-dir"))
  62         IR.Flat.BuildCode.PREFIX=args[++i]+"/";
  63       else if (option.equals("-fastcheck"))
  64         state.FASTCHECK=true;
  65       else if (option.equals("-selfloop"))
  66         state.selfloops.add(args[++i]);
  67       else if (option.equals("-excprefetch"))
  68         state.excprefetch.add(args[++i]);
  69       else if (option.equals("-classlibrary"))
  70         ClassLibraryPrefix=args[++i]+"/";
  71       else if(option.equals("-numcore")) {
  72         ++i;
  73         state.CORENUM = Integer.parseInt(args[i]);
  74       } else if (option.equals("-mainclass"))
  75         state.main=args[++i];
  76       else if (option.equals("-trueprob")) {
  77         state.TRUEPROB=Double.parseDouble(args[++i]);
  78       } else if (option.equals("-printflat"))
  79         State.PRINTFLAT=true;
  80       else if (option.equals("-printscheduling"))
  81         State.PRINTSCHEDULING=true;
  82       else if (option.equals("-printschedulesim"))
  83         State.PRINTSCHEDULESIM=true;
  84       else if (option.equals("-struct"))
  85         state.structfile=args[++i];
  86       else if (option.equals("-conscheck"))
  87         state.CONSCHECK=true;
  88       else if (option.equals("-task"))
  89         state.TASK=true;
  90       else if (option.equals("-taskstate"))
  91         state.TASKSTATE=true;
  92       else if (option.equals("-tagstate"))
  93         state.TAGSTATE=true;
  94       else if (option.equals("-flatirtasks")) {
  95         state.FLATIRGRAPH=true;
  96         state.FLATIRGRAPHTASKS=true;
  97       } else if (option.equals("-flatirusermethods")) {
  98         state.FLATIRGRAPH=true;
  99         state.FLATIRGRAPHUSERMETHODS=true;
 100       } else if (option.equals("-flatirlibmethods")) {
 101         state.FLATIRGRAPH=true;
 102         state.FLATIRGRAPHLIBMETHODS=true;
 103       } else if (option.equals("-multicore"))
 104         state.MULTICORE=true;
 105       else if (option.equals("-ownership"))
 106         state.OWNERSHIP=true;
 107       else if (option.equals("-ownallocdepth")) {
 108         state.OWNERSHIPALLOCDEPTH=Integer.parseInt(args[++i]);
 109       } else if (option.equals("-ownwritedots")) {
 110         state.OWNERSHIPWRITEDOTS=true;
 111         if (args[++i].equals("all")) {
 112           state.OWNERSHIPWRITEALL=true;
 113         }
 114       } else if (option.equals("-ownaliasfile"))
 115         state.OWNERSHIPALIASFILE=args[++i];
 116       else if (option.equals("-optional"))
 117         state.OPTIONAL=true;
 118       else if (option.equals("-raw"))
 119         state.RAW=true;
 120       else if (option.equals("-scheduling"))
 121         state.SCHEDULING=true;
 122       else if (option.equals("-useprofile"))
 123         state.USEPROFILE=true;
 124       else if (option.equals("-thread"))
 125         state.THREAD=true;
 126       else if (option.equals("-dsm"))
 127         state.DSM=true;
 128       else if (option.equals("-webinterface"))
 129         state.WEBINTERFACE=true;
 130       else if (option.equals("-instructionfailures"))
 131         state.INSTRUCTIONFAILURE=true;
 132       else if (option.equals("-help")) {
 133         System.out.println("-classlibrary classlibrarydirectory -- directory where classlibrary is located");
 134         System.out.println("-selfloop task -- this task doesn't self loop its parameters forever");
 135         System.out.println("-dir outputdirectory -- output code in outputdirectory");
 136         System.out.println("-struct structfile -- output structure declarations for repair tool");
 137         System.out.println("-mainclass -- main function to call");
 138         System.out.println("-dsm -- distributed shared memory support");
 139         System.out.println("-precise -- use precise garbage collection");
 140         System.out.println("-conscheck -- turn on consistency checking");
 141         System.out.println("-task -- compiler for tasks");
 142         System.out.println("-fastcheck -- fastcheckpointing for Bristlecone");
 143         System.out.println("-thread -- threads");
 144         System.out.println("-trueprob <d> -- probability of true branch");
 145         System.out.println("-printflat -- print out flat representation");
 146         System.out.println("-instructionfailures -- insert code for instruction level failures");
 147         System.out.println("-taskstate -- do task state analysis");
 148         System.out.println("-flatirtasks -- create dot files for flat IR graphs of tasks");
 149         System.out.println("-flatirusermethods -- create dot files for flat IR graphs of user methods");
 150         System.out.println("-flatirlibmethods -- create dot files for flat IR graphs of library class methods");
 151         System.out.println("  note: -flatirusermethods or -flatirlibmethods currently generate all class method flat IR graphs");
 152         System.out.println("-ownership -- do ownership analysis");
 153         System.out.println("-ownallocdepth <d> -- set allocation depth for ownership analysis");
 154         System.out.println("-ownwritedots <all/final> -- write ownership graphs; can be all results or just final results");
 155         System.out.println("-ownaliasfile <filename> -- write a text file showing all detected aliases in program tasks");
 156         System.out.println("-optional -- enable optional arguments");
 157         System.out.println("-scheduling do task scheduling");
 158         System.out.println("-multicore generate multi-core version binary");
 159         System.out.println("-numcore set the number of cores (should be used together with -multicore), defaultly set as 1");
 160         System.out.println("-raw generate raw version binary (should be used together with -multicore)");
 161         System.out.println("-interrupt generate raw version binary with interruption (should be used togethere with -raw)");
 162         System.out.println("-rawconfig config raw simulator as 4xn (should be used together with -raw)");
 163         System.out.println("-rawpath print out execute path information for raw version (should be used together with -raw)");
 164         System.out.println("-useprofile use profiling data for scheduling (should be used together with -raw)");
 165         System.out.println("-threadsimulate generate multi-thread simulate version binary");
 166         System.out.println("-rawuseio use standard io to output profiling data (should be used together with -raw and -profile), it only works with single core version");
 167         System.out.println("-printscheduling -- print out scheduling graphs");
 168         System.out.println("-printschedulesim -- print out scheduling simulation result graphs");
 169         System.out.println("-webinterface -- enable web interface");
 170         System.out.println("-help -- print out help");
 171         System.exit(0);
 172       } else {
 173         readSourceFile(state, args[i]);
 174       }
 175     }
 176
 177
 178     readSourceFile(state, ClassLibraryPrefix+"System.java");
 179     readSourceFile(state, ClassLibraryPrefix+"String.java");
 180     readSourceFile(state, ClassLibraryPrefix+"HashSet.java");
 181     readSourceFile(state, ClassLibraryPrefix+"HashMap.java");
 182     readSourceFile(state, ClassLibraryPrefix+"HashMapIterator.java");
 183     readSourceFile(state, ClassLibraryPrefix+"HashEntry.java");
 184     readSourceFile(state, ClassLibraryPrefix+"Integer.java");
 185     readSourceFile(state, ClassLibraryPrefix+"StringBuffer.java");
 186     //if(!state.RAW) {
 187     readSourceFile(state, ClassLibraryPrefix+"FileInputStream.java");
 188     readSourceFile(state, ClassLibraryPrefix+"InputStream.java");
 189     readSourceFile(state, ClassLibraryPrefix+"OutputStream.java");
 190     readSourceFile(state, ClassLibraryPrefix+"FileOutputStream.java");
 191     readSourceFile(state, ClassLibraryPrefix+"File.java");
 192     readSourceFile(state, ClassLibraryPrefix+"InetAddress.java");
 193     readSourceFile(state, ClassLibraryPrefix+"SocketInputStream.java");
 194     readSourceFile(state, ClassLibraryPrefix+"SocketOutputStream.java");
 195     //}
 196     readSourceFile(state, ClassLibraryPrefix+"Math.java");
 197     readSourceFile(state, ClassLibraryPrefix+"gnu/Random.java");
 198     readSourceFile(state, ClassLibraryPrefix+"Vector.java");
 199     readSourceFile(state, ClassLibraryPrefix+"Enumeration.java");
 200     readSourceFile(state, ClassLibraryPrefix+"Dictionary.java");
 201     readSourceFile(state, ClassLibraryPrefix+"Writer.java");
 202     readSourceFile(state, ClassLibraryPrefix+"BufferedWriter.java");
 203     readSourceFile(state, ClassLibraryPrefix+"OutputStreamWriter.java");
 204     readSourceFile(state, ClassLibraryPrefix+"FileWriter.java");
 205     readSourceFile(state, ClassLibraryPrefix+"Date.java");
 206
 207     if (state.TASK) {
 208       if (state.FASTCHECK)
 209         readSourceFile(state, ClassLibraryPrefix+"ObjectFC.java");
 210       else
 211         readSourceFile(state, ClassLibraryPrefix+"Object.java");
 212       readSourceFile(state, ClassLibraryPrefix+"TagDescriptor.java");
 213     } else if (state.DSM) {
 214       readSourceFile(state, ClassLibraryPrefix+"ThreadDSM.java");
 215       readSourceFile(state, ClassLibraryPrefix+"ObjectJavaDSM.java");
 216       readSourceFile(state, ClassLibraryPrefix+"Barrier.java");
 217     } else {
 218       if (state.THREAD) {
 219         readSourceFile(state, ClassLibraryPrefix+"Thread.java");
 220         readSourceFile(state, ClassLibraryPrefix+"ObjectJava.java");
 221       } else
 222         readSourceFile(state, ClassLibraryPrefix+"ObjectJavaNT.java");
 223     }
 224
 225     if (state.TASK) {
 226       readSourceFile(state, ClassLibraryPrefix+"StartupObject.java");
 227       readSourceFile(state, ClassLibraryPrefix+"Socket.java");
 228       readSourceFile(state, ClassLibraryPrefix+"ServerSocket.java");
 229     } else {
 230       readSourceFile(state, ClassLibraryPrefix+"SocketJava.java");
 231       readSourceFile(state, ClassLibraryPrefix+"ServerSocketJava.java");
 232     }
 233
 234     BuildIR bir=new BuildIR(state);
 235     bir.buildtree();
 236
 237     TypeUtil tu=new TypeUtil(state);
 238
 239     SemanticCheck sc=new SemanticCheck(state,tu);
 240     sc.semanticCheck();
 241     tu.createFullTable();
 242
 243     BuildFlat bf=new BuildFlat(state,tu);
 244     bf.buildFlat();
 245     SafetyAnalysis sa=null;
 246     PrefetchAnalysis pa=null;
 247
 248     if (state.TAGSTATE) {
 249       CallGraph callgraph=new CallGraph(state);
 250       TagAnalysis taganalysis=new TagAnalysis(state, callgraph);
 251       TaskTagAnalysis tta=new TaskTagAnalysis(state, taganalysis);
 252     }
 253
 254     if (state.TASKSTATE) {
 255       CallGraph callgraph=new CallGraph(state);
 256       TagAnalysis taganalysis=new TagAnalysis(state, callgraph);
 257       TaskAnalysis ta=new TaskAnalysis(state, taganalysis);
 258       ta.taskAnalysis();
 259       TaskGraph tg=new TaskGraph(state, ta);
 260       tg.createDOTfiles();
 261
 262       if (state.OPTIONAL) {
 263         ExecutionGraph et=new ExecutionGraph(state, ta);
 264         et.createExecutionGraph();
 265         sa = new SafetyAnalysis(et.getExecutionGraph(), state, ta);
 266         sa.doAnalysis();
 267         state.storeAnalysisResult(sa.getResult());
 268         state.storeOptionalTaskDescriptors(sa.getOptionalTaskDescriptors());
 269       }
 270
 271       if (state.WEBINTERFACE) {
 272         GarbageAnalysis ga=new GarbageAnalysis(state, ta);
 273         WebInterface wi=new WebInterface(state, ta, tg, ga, taganalysis);
 274         JhttpServer serve=new JhttpServer(8000,wi);
 275         serve.run();
 276       }
 277
 278       if (state.SCHEDULING) {
 279         // Indentify backedges
 280         for(Iterator it_classes=state.getClassSymbolTable().getDescriptorsIterator(); it_classes.hasNext();) {
 281           ClassDescriptor cd=(ClassDescriptor) it_classes.next();
 282           if(cd.hasFlags()) {
 283             Set<FlagState> fss = ta.getFlagStates(cd);
 284             SCC scc=GraphNode.DFS.computeSCC(fss);
 285             if (scc.hasCycles()) {
 286               for(int i=0; i<scc.numSCC(); i++) {
 287                 if (scc.hasCycle(i)) {
 288                   Set cycleset = scc.getSCC(i);
 289                   Iterator it_fs = cycleset.iterator();
 290                   while(it_fs.hasNext()) {
 291                     FlagState fs = (FlagState)it_fs.next();
 292                     Iterator it_edges = fs.edges();
 293                     while(it_edges.hasNext()) {
 294                       FEdge edge = (FEdge)it_edges.next();
 295                       if(cycleset.contains(edge.getTarget())) {
 296                         // a backedge
 297                         edge.setisbackedge(true);
 298                       }
 299                     }
 300                   }
 301                 }
 302               }
 303             }
 304             fss = null;
 305           }
 306         }
 307
 308         // set up profiling data
 309         if(state.USEPROFILE) {
 310           // read in profile data and set
 311           FileInputStream inStream = new FileInputStream("/scratch/profile.rst");
 312           byte[] b = new byte[1024 * 100];
 313           int length = inStream.read(b);
 314           if(length < 0) {
 315             System.out.print("No content in input file: /scratch/profile.rst\n");
 316             System.exit(-1);
 317           }
 318           String profiledata = new String(b, 0, length);
 319           java.util.Hashtable<String, TaskInfo> taskinfos = new java.util.Hashtable<String, TaskInfo>();
 320
 321           // profile data format:
 322           //   taskname, numoftaskexits(; exetime, probability, numofnewobjtypes(, newobj type, num of objs)+)+
 323           int inindex = profiledata.indexOf('\n');
 324           while((inindex != -1) ) {
 325             String inline = profiledata.substring(0, inindex);
 326             profiledata = profiledata.substring(inindex + 1);
 327             //System.printString(inline + "\n");
 328             int tmpinindex = inline.indexOf(',');
 329             if(tmpinindex == -1) {
 330               break;
 331             }
 332             String inname = inline.substring(0, tmpinindex);
 333             String inint = inline.substring(tmpinindex + 1);
 334             while(inint.startsWith(" ")) {
 335               inint = inint.substring(1);
 336             }
 337             tmpinindex = inint.indexOf(',');
 338             if(tmpinindex == -1) {
 339               break;
 340             }
 341             int numofexits = Integer.parseInt(inint.substring(0, tmpinindex));
 342             TaskInfo tinfo = new TaskInfo(numofexits);
 343             inint = inint.substring(tmpinindex + 1);
 344             while(inint.startsWith(" ")) {
 345               inint = inint.substring(1);
 346             }
 347             tmpinindex = inint.indexOf(';');
 348             int byObj = Integer.parseInt(inint.substring(0, tmpinindex));
 349             if(byObj != -1) {
 350               tinfo.m_byObj = byObj;
 351             }
 352             inint = inint.substring(tmpinindex + 1);
 353             while(inint.startsWith(" ")) {
 354               inint = inint.substring(1);
 355             }
 356             for(int i = 0; i < numofexits; i++) {
 357               String tmpinfo = null;
 358               if(i < numofexits - 1) {
 359                 tmpinindex = inint.indexOf(';');
 360                 tmpinfo = inint.substring(0, tmpinindex);
 361                 inint = inint.substring(tmpinindex + 1);
 362                 while(inint.startsWith(" ")) {
 363                   inint = inint.substring(1);
 364                 }
 365               } else {
 366                 tmpinfo = inint;
 367               }
 368
 369               tmpinindex = tmpinfo.indexOf(',');
 370               tinfo.m_exetime[i] = Integer.parseInt(tmpinfo.substring(0, tmpinindex));
 371               tmpinfo = tmpinfo.substring(tmpinindex + 1);
 372               while(tmpinfo.startsWith(" ")) {
 373                 tmpinfo = tmpinfo.substring(1);
 374               }
 375               tmpinindex = tmpinfo.indexOf(',');
 376               tinfo.m_probability[i] = Double.parseDouble(tmpinfo.substring(0, tmpinindex));
 377               tmpinfo = tmpinfo.substring(tmpinindex + 1);
 378               while(tmpinfo.startsWith(" ")) {
 379                 tmpinfo = tmpinfo.substring(1);
 380               }
 381               tmpinindex = tmpinfo.indexOf(',');
 382               int numofnobjs = 0;
 383               if(tmpinindex == -1) {
 384                 numofnobjs = Integer.parseInt(tmpinfo);
 385                 if(numofnobjs != 0) {
 386                   System.err.println("Error profile data format!");
 387                   System.exit(-1);
 388                 }
 389               } else {
 390                 tinfo.m_newobjinfo.setElementAt(new Hashtable<String,Integer>(), i);
 391                 numofnobjs = Integer.parseInt(tmpinfo.substring(0, tmpinindex));
 392                 tmpinfo = tmpinfo.substring(tmpinindex + 1);
 393                 while(tmpinfo.startsWith(" ")) {
 394                   tmpinfo = tmpinfo.substring(1);
 395                 }
 396                 for(int j = 0; j < numofnobjs; j++) {
 397                   tmpinindex = tmpinfo.indexOf(',');
 398                   String nobjtype = tmpinfo.substring(0, tmpinindex);
 399                   tmpinfo = tmpinfo.substring(tmpinindex + 1);
 400                   while(tmpinfo.startsWith(" ")) {
 401                     tmpinfo = tmpinfo.substring(1);
 402                   }
 403                   int objnum = 0;
 404                   if(j < numofnobjs - 1) {
 405                     tmpinindex = tmpinfo.indexOf(',');
 406                     objnum  = Integer.parseInt(tmpinfo.substring(0, tmpinindex));
 407                     tmpinfo = tmpinfo.substring(tmpinindex + 1);
 408                     while(tmpinfo.startsWith(" ")) {
 409                       tmpinfo = tmpinfo.substring(1);
 410                     }
 411                   } else {
 412                     objnum = Integer.parseInt(tmpinfo);
 413                   }
 414                   tinfo.m_newobjinfo.elementAt(i).put(nobjtype, objnum);
 415                 }
 416               }
 417             }
 418             taskinfos.put(inname, tinfo);
 419             inindex = profiledata.indexOf('\n');
 420           }
 421
 422           java.util.Random r=new java.util.Random();
 423           int tint = 0;
 424           for(Iterator it_classes=state.getClassSymbolTable().getDescriptorsIterator(); it_classes.hasNext();) {
 425             ClassDescriptor cd=(ClassDescriptor) it_classes.next();
 426             if(cd.hasFlags()) {
 427               Vector rootnodes=ta.getRootNodes(cd);
 428               if(rootnodes!=null) {
 429                 for(Iterator it_rootnodes=rootnodes.iterator(); it_rootnodes.hasNext();) {
 430                   FlagState root=(FlagState)it_rootnodes.next();
 431                   Vector allocatingTasks = root.getAllocatingTasks();
 432                   if(allocatingTasks != null) {
 433                     for(int k = 0; k < allocatingTasks.size(); k++) {
 434                       TaskDescriptor td = (TaskDescriptor)allocatingTasks.elementAt(k);
 435                       Vector<FEdge> fev = (Vector<FEdge>)ta.getFEdgesFromTD(td);
 436                       int numEdges = fev.size();
 437                       int total = 100;
 438                       for(int j = 0; j < numEdges; j++) {
 439                         FEdge pfe = fev.elementAt(j);
 440                         TaskInfo taskinfo = taskinfos.get(td.getSymbol());
 441                         tint = taskinfo.m_exetime[pfe.getTaskExitIndex()];
 442                         pfe.setExeTime(tint);
 443                         double idouble = taskinfo.m_probability[pfe.getTaskExitIndex()];
 444                         pfe.setProbability(idouble);
 445                         int newRate = 0;
 446                         if((taskinfo.m_newobjinfo.elementAt(pfe.getTaskExitIndex()) != null)
 447                            && (taskinfo.m_newobjinfo.elementAt(pfe.getTaskExitIndex()).containsKey(cd.getSymbol()))) {
 448                           newRate = taskinfo.m_newobjinfo.elementAt(pfe.getTaskExitIndex()).get(cd.getSymbol());
 449                         }
 450                         pfe.addNewObjInfo(cd, newRate, idouble);
 451                         if(taskinfo.m_byObj != -1) {
 452                           ((FlagState)pfe.getSource()).setByObj(taskinfo.m_byObj);
 453                         }
 454                       }
 455                       fev = null;
 456                     }
 457                   }
 458                 }
 459               }
 460               Iterator it_flags = ta.getFlagStates(cd).iterator();
 461               while(it_flags.hasNext()) {
 462                 FlagState fs = (FlagState)it_flags.next();
 463                 Iterator it_edges = fs.edges();
 464                 int total = 100;
 465                 while(it_edges.hasNext()) {
 466                   FEdge edge = (FEdge)it_edges.next();
 467                   TaskInfo taskinfo = taskinfos.get(edge.getTask().getSymbol());
 468                   tint = taskinfo.m_exetime[edge.getTaskExitIndex()];
 469                   edge.setExeTime(tint);
 470                   double idouble = taskinfo.m_probability[edge.getTaskExitIndex()];
 471                   edge.setProbability(idouble);
 472                   if(taskinfo.m_byObj != -1) {
 473                     ((FlagState)edge.getSource()).setByObj(taskinfo.m_byObj);
 474                   }
 475                 }
 476               }
 477             }
 478           }
 479           taskinfos = null;
 480         } else {
 481           // for test
 482           // Randomly set the newRate and probability of FEdges
 483           java.util.Random r=new java.util.Random();
 484           int tint = 0;
 485           for(Iterator it_classes=state.getClassSymbolTable().getDescriptorsIterator(); it_classes.hasNext();) {
 486             ClassDescriptor cd=(ClassDescriptor) it_classes.next();
 487             if(cd.hasFlags()) {
 488               Vector rootnodes=ta.getRootNodes(cd);
 489               if(rootnodes!=null) {
 490                 for(Iterator it_rootnodes=rootnodes.iterator(); it_rootnodes.hasNext();) {
 491                   FlagState root=(FlagState)it_rootnodes.next();
 492                   Vector allocatingTasks = root.getAllocatingTasks();
 493                   if(allocatingTasks != null) {
 494                     for(int k = 0; k < allocatingTasks.size(); k++) {
 495                       TaskDescriptor td = (TaskDescriptor)allocatingTasks.elementAt(k);
 496                       Vector<FEdge> fev = (Vector<FEdge>)ta.getFEdgesFromTD(td);
 497                       int numEdges = fev.size();
 498                       int total = 100;
 499                       for(int j = 0; j < numEdges; j++) {
 500                         FEdge pfe = fev.elementAt(j);
 501                         if(numEdges - j == 1) {
 502                           pfe.setProbability(total);
 503                         } else {
 504                           if((total != 0) && (total != 1)) {
 505                             do {
 506                               tint = r.nextInt()%total;
 507                             } while(tint <= 0);
 508                           }
 509                           pfe.setProbability(tint);
 510                           total -= tint;
 511                         }
 512                         //do {
 513                         //   tint = r.nextInt()%10;
 514                         //  } while(tint <= 0);
 515                         //int newRate = tint;
 516                         //int newRate = (j+1)%2+1;
 517                         int newRate = 1;
 518                         String cdname = cd.getSymbol();
 519                         if((cdname.equals("SeriesRunner")) ||
 520                            (cdname.equals("MDRunner")) ||
 521                            (cdname.equals("Stage")) ||
 522                            (cdname.equals("AppDemoRunner")) ||
 523                            (cdname.equals("FilterBankAtom")) ||
 524                            (cdname.equals("Grid"))) {
 525                           newRate = 16;
 526                         } else if(cdname.equals("SentenceParser")) {
 527                           newRate = 4;
 528                         }
 529                         //do {
 530                         //    tint = r.nextInt()%100;
 531                         //   } while(tint <= 0);
 532                         //   int probability = tint;
 533                         int probability = 100;
 534                         pfe.addNewObjInfo(cd, newRate, probability);
 535                       }
 536                       fev = null;
 537                     }
 538                   }
 539                 }
 540               }
 541
 542               Iterator it_flags = ta.getFlagStates(cd).iterator();
 543               while(it_flags.hasNext()) {
 544                 FlagState fs = (FlagState)it_flags.next();
 545                 Iterator it_edges = fs.edges();
 546                 int total = 100;
 547                 while(it_edges.hasNext()) {
 548                   //do {
 549                   //    tint = r.nextInt()%10;
 550                   //   } while(tint <= 0);
 551                   tint = 3;
 552                   FEdge edge = (FEdge)it_edges.next();
 553                   edge.setExeTime(tint);
 554                   if((fs.getClassDescriptor().getSymbol().equals("MD")) && (edge.getTask().getSymbol().equals("t6"))) {
 555                     if(edge.isbackedge()) {
 556                       if(edge.getTarget().equals(edge.getSource())) {
 557                         edge.setProbability(93.75);
 558                       } else {
 559                         edge.setProbability(3.125);
 560                       }
 561                     } else {
 562                       edge.setProbability(3.125);
 563                     }
 564                     continue;
 565                   }
 566                   if(!it_edges.hasNext()) {
 567                     edge.setProbability(total);
 568                   } else {
 569                     if((total != 0) && (total != 1)) {
 570                       do {
 571                         tint = r.nextInt()%total;
 572                       } while(tint <= 0);
 573                     }
 574                     edge.setProbability(tint);
 575                     total -= tint;
 576                   }
 577                 }
 578               }
 579             }
 580           }
 581         }
 582
 583         // Use ownership analysis to get alias information
 584         CallGraph callGraph = new CallGraph(state);
 585         OwnershipAnalysis oa = new OwnershipAnalysis(state,
 586                                                      tu,
 587                                                      callGraph,
 588                                                      state.OWNERSHIPALLOCDEPTH,
 589                                                      state.OWNERSHIPWRITEDOTS,
 590                                                      state.OWNERSHIPWRITEALL,
 591                                                      state.OWNERSHIPALIASFILE);
 592
 593         // Save the current standard input, output, and error streams
 594         // for later restoration.
 595         PrintStream origOut = System.out;
 596
 597         // Create a new output stream for the standard output.
 598         PrintStream stdout  = null;
 599         try {
 600           stdout = new PrintStream(new FileOutputStream("/scratch/SimulatorResult.out"));
 601         } catch (Exception e) {
 602           // Sigh.  Couldn't open the file.
 603           System.out.println("Redirect:  Unable to open output file!");
 604           System.exit(1);
 605         }
 606
 607         // Print stuff to the original output and error streams.
 608         // On most systems all of this will end up on your console when you
 609         // run this application.
 610         //origOut.println ("\nRedirect:  Round #1");
 611         //System.out.println ("Test output via 'System.out'.");
 612         //origOut.println ("Test output via 'origOut' reference.");
 613
 614         // Set the System out and err streams to use our replacements.
 615         System.setOut(stdout);
 616
 617         // Print stuff to the original output and error streams.
 618         // The stuff printed through the 'origOut' and 'origErr' references
 619         // should go to the console on most systems while the messages
 620         // printed through the 'System.out' and 'System.err' will end up in
 621         // the files we created for them.
 622         //origOut.println ("\nRedirect:  Round #2");
 623         //System.out.println ("Test output via 'SimulatorResult.out'.");
 624         //origOut.println ("Test output via 'origOut' reference.");
 625
 626         // generate multiple schedulings
 627         ScheduleAnalysis scheduleAnalysis = new ScheduleAnalysis(state, ta);
 628         scheduleAnalysis.preSchedule();
 629         scheduleAnalysis.scheduleAnalysis();
 630         //scheduleAnalysis.setCoreNum(scheduleAnalysis.getSEdges4Test().size());
 631         scheduleAnalysis.setCoreNum(state.CORENUM);
 632         scheduleAnalysis.schedule();
 633
 634         //simulate these schedulings
 635         ScheduleSimulator scheduleSimulator = new ScheduleSimulator(scheduleAnalysis.getCoreNum(), state, ta);
 636         Vector<Vector<Schedule>> schedulings = scheduleAnalysis.getSchedulings();
 637         Vector<Integer> selectedScheduling = new Vector<Integer>();
 638         int processTime = Integer.MAX_VALUE;
 639         if(schedulings.size() > 1500) {
 640           int index = 0;
 641           int upperbound = schedulings.size();
 642           long seed = 0;
 643           java.util.Random r = new java.util.Random(seed);
 644           for(int ii = 0; ii < 1500; ii++) {
 645             index = (int)((Math.abs((double)r.nextInt() / (double)Integer.MAX_VALUE)) * upperbound);
 646             System.out.println("Scheduling index:" + index);
 647             //System.err.println("Scheduling index:" + index);
 648             Vector<Schedule> scheduling = schedulings.elementAt(index);
 649             scheduleSimulator.setScheduling(scheduling);
 650             int tmpTime = scheduleSimulator.process();
 651             if(tmpTime < processTime) {
 652               selectedScheduling.clear();
 653               selectedScheduling.add(index);
 654               processTime = tmpTime;
 655             } else if(tmpTime == processTime) {
 656               selectedScheduling.add(index);
 657             }
 658             scheduling = null;
 659           }
 660         } else {
 661           Iterator it_scheduling = scheduleAnalysis.getSchedulingsIter();
 662           int index = 0;
 663           while(it_scheduling.hasNext()) {
 664             Vector<Schedule> scheduling = (Vector<Schedule>)it_scheduling.next();
 665             scheduleSimulator.setScheduling(scheduling);
 666             int tmpTime = scheduleSimulator.process();
 667             if(tmpTime < processTime) {
 668               selectedScheduling.clear();
 669               selectedScheduling.add(index);
 670               processTime = tmpTime;
 671             } else if(tmpTime == processTime) {
 672               selectedScheduling.add(index);
 673             }
 674             scheduling = null;
 675             index++;
 676           }
 677         }
 678
 679         System.out.print("Selected schedulings with least exectution time " + processTime + ": \n\t");
 680         for(int i = 0; i < selectedScheduling.size(); i++) {
 681           System.out.print((selectedScheduling.elementAt(i) + 1) + ", ");
 682         }
 683         System.out.println();
 684
 685         // Close the streams.
 686         try {
 687           stdout.close();
 688           System.setOut(origOut);
 689         } catch (Exception e) {
 690           origOut.println("Redirect:  Unable to close files!");
 691         }
 692
 693         if(state.MULTICORE) {
 694           //it_scheduling = scheduleAnalysis.getSchedulingsIter();
 695           //Vector<Schedule> scheduling = (Vector<Schedule>)it_scheduling.next();
 696           Vector<Schedule> scheduling = scheduleAnalysis.getSchedulings().elementAt(selectedScheduling.firstElement());
 697           BuildCodeMultiCore bcm=new BuildCodeMultiCore(state, bf.getMap(), tu, sa, scheduling, scheduleAnalysis.getCoreNum(), pa);
 698           bcm.setOwnershipAnalysis(oa);
 699           bcm.buildCode();
 700           scheduling = null;
 701         }
 702         selectedScheduling = null;
 703       }
 704
 705     }
 706
 707     if(!state.MULTICORE) {
 708       if (state.DSM) {
 709         CallGraph callgraph=new CallGraph(state);
 710         if (state.PREFETCH) {
 711           //speed up prefetch generation using locality analysis results
 712           LocalityAnalysis la=new LocalityAnalysis(state, callgraph, tu);
 713           pa=new PrefetchAnalysis(state, callgraph, tu, la);
 714         }
 715
 716         LocalityAnalysis la=new LocalityAnalysis(state, callgraph, tu);
 717         GenerateConversions gc=new GenerateConversions(la, state);
 718         BuildCode bc=new BuildCode(state, bf.getMap(), tu, la, pa);
 719         bc.buildCode();
 720       } else {
 721         BuildCode bc=new BuildCode(state, bf.getMap(), tu, sa, pa);
 722         bc.buildCode();
 723       }
 724     }
 725
 726     if (state.FLATIRGRAPH) {
 727       FlatIRGraph firg = new FlatIRGraph(state,
 728                                          state.FLATIRGRAPHTASKS,
 729                                          state.FLATIRGRAPHUSERMETHODS,
 730                                          state.FLATIRGRAPHLIBMETHODS);
 731     }
 732
 733     if (state.OWNERSHIP) {
 734       CallGraph callGraph = new CallGraph(state);
 735       OwnershipAnalysis oa = new OwnershipAnalysis(state,
 736                                                    tu,
 737                                                    callGraph,
 738                                                    state.OWNERSHIPALLOCDEPTH,
 739                                                    state.OWNERSHIPWRITEDOTS,
 740                                                    state.OWNERSHIPWRITEALL,
 741                                                    state.OWNERSHIPALIASFILE);
 742     }
 743
 744     System.exit(0);
 745   }
 746
 747   /** Reads in a source file and adds the parse tree to the state object. */
 748
 749   private static void readSourceFile(State state, String sourcefile) throws Exception {
 750     Reader fr = new BufferedReader(new FileReader(sourcefile));
 751     Lex.Lexer l = new Lex.Lexer(fr);
 752     java_cup.runtime.lr_parser g;
 753     g = new Parse.Parser(l);
 754     ParseNode p=null;
 755     try {
 756       p=(ParseNode) g./*debug_*/ parse().value;
 757     } catch (Exception e) {
 758       System.err.println("Error parsing file:"+sourcefile);
 759       e.printStackTrace();
 760       System.exit(-1);
 761     }
 762     state.addParseNode(p);
 763     if (l.numErrors()!=0) {
 764       System.out.println("Error parsing "+sourcefile);
 765       System.exit(l.numErrors());
 766     }
 767   }
 768
 769   static class TaskInfo {
 770     public int m_numofexits;
 771     public int[] m_exetime;
 772     public double[] m_probability;
 773     public Vector<Hashtable<String, Integer>> m_newobjinfo;
 774     public int m_byObj;
 775
 776     public TaskInfo(int numofexits) {
 777       this.m_numofexits = numofexits;
 778       this.m_exetime = new int[this.m_numofexits];
 779       this.m_probability = new double[this.m_numofexits];
 780       this.m_newobjinfo = new Vector<Hashtable<String, Integer>>();
 781       for(int i = 0; i < this.m_numofexits; i++) {
 782         this.m_newobjinfo.add(null);
 783       }
 784       this.m_byObj = -1;
 785     }
 786   }
 787 }