Robust/src/IR/Flat/BuildCodeMultiCore.java

   1 package IR.Flat;
   2
   3 import java.io.FileOutputStream;
   4 import java.io.PrintWriter;
   5 import java.util.HashSet;
   6 import java.util.Hashtable;
   7 import java.util.Iterator;
   8 import java.util.Queue;
   9 import java.util.Vector;
  10
  11 import Analysis.Locality.LocalityBinding;
  12 import Analysis.Scheduling.Schedule;
  13 import Analysis.TaskStateAnalysis.FEdge;
  14 import Analysis.TaskStateAnalysis.FlagState;
  15 import Analysis.TaskStateAnalysis.SafetyAnalysis;
  16 import IR.ClassDescriptor;
  17 import IR.Descriptor;
  18 import IR.FlagDescriptor;
  19 import IR.MethodDescriptor;
  20 import IR.State;
  21 import IR.TagVarDescriptor;
  22 import IR.TaskDescriptor;
  23 import IR.TypeDescriptor;
  24 import IR.TypeUtil;
  25 import IR.VarDescriptor;
  26 import IR.Tree.DNFFlag;
  27 import IR.Tree.DNFFlagAtom;
  28 import IR.Tree.FlagExpressionNode;
  29 import IR.Tree.TagExpressionList;
  30
  31 public class BuildCodeMultiCore extends BuildCode {
  32     private Vector<Schedule> scheduling;
  33     int coreNum;
  34     Schedule currentSchedule;
  35     Hashtable[] fsate2qnames;
  36     String objqarrayprefix= "objqueuearray4class";
  37     String objqueueprefix = "objqueue4parameter_";
  38     String paramqarrayprefix = "paramqueuearray4task";
  39     String coreqarrayprefix = "paramqueuearrays_core";
  40     String taskprefix = "task_";
  41     String taskarrayprefix = "taskarray_core";
  42     String otqueueprefix = "___otqueue";
  43     int startupcorenum;  // record the core containing startup task, suppose only one core can hava startup object
  44
  45     public BuildCodeMultiCore(State st, Hashtable temptovar, TypeUtil typeutil, SafetyAnalysis sa, Vector<Schedule> scheduling, int coreNum) {
  46         super(st, temptovar, typeutil, sa);
  47         this.scheduling = scheduling;
  48         this.coreNum = coreNum;
  49         this.currentSchedule = null;
  50         this.fsate2qnames = null;
  51         this.startupcorenum = 0;
  52
  53         // sometimes there are extra cores then needed in scheduling
  54         // TODO
  55         // currently, it is guaranteed that in scheduling, the corenum
  56         // is started from 0 and continuous.
  57         // MAY need modification here in the future when take hardware
  58         // information into account.
  59         if(this.scheduling.size() < this.coreNum) {
  60             this.coreNum = this.scheduling.size();
  61         }
  62     }
  63
  64     public void buildCode() {
  65         /* Create output streams to write to */
  66         PrintWriter outclassdefs=null;
  67         PrintWriter outstructs=null;
  68         PrintWriter outmethodheader=null;
  69         PrintWriter outmethod=null;
  70         PrintWriter outvirtual=null;
  71         PrintWriter outtask=null;
  72         PrintWriter outtaskdefs=null;
  73         //PrintWriter outoptionalarrays=null;
  74         //PrintWriter optionalheaders=null;
  75
  76         try {
  77             outstructs=new PrintWriter(new FileOutputStream(PREFIX+"structdefs.h"), true);
  78             outmethodheader=new PrintWriter(new FileOutputStream(PREFIX+"methodheaders.h"), true);
  79             outclassdefs=new PrintWriter(new FileOutputStream(PREFIX+"classdefs.h"), true);
  80             outvirtual=new PrintWriter(new FileOutputStream(PREFIX+"virtualtable.h"), true);
  81             outmethod=new PrintWriter(new FileOutputStream(PREFIX+"methods.c"), true);
  82             if (state.TASK) {
  83                 outtask=new PrintWriter(new FileOutputStream(PREFIX+"task.h"), true);
  84                 outtaskdefs=new PrintWriter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
  85                 /* optional
  86                  if (state.OPTIONAL){
  87                     outoptionalarrays=new PrintWriter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
  88                     optionalheaders=new PrintWriter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
  89                 } */
  90             }
  91             /*if (state.structfile!=null) {
  92                 outrepairstructs=new PrintWriter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
  93             }*/
  94         } catch (Exception e) {
  95             e.printStackTrace();
  96             System.exit(-1);
  97         }
  98
  99         /* Build the virtual dispatch tables */
 100         super.buildVirtualTables(outvirtual);
 101
 102         /* Output includes */
 103         outmethodheader.println("#ifndef METHODHEADERS_H");
 104         outmethodheader.println("#define METHODHEADERS_H");
 105         outmethodheader.println("#include \"structdefs.h\"");
 106         /*if (state.DSM)
 107             outmethodheader.println("#include \"dstm.h\"");*/
 108
 109         /* Output Structures */
 110         super.outputStructs(outstructs);
 111
 112         // Output the C class declarations
 113         // These could mutually reference each other
 114         super.outputClassDeclarations(outclassdefs);
 115
 116         // Output function prototypes and structures for parameters
 117         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 118         int numclasses = 0;
 119         while(it.hasNext()) {
 120             ++numclasses;
 121             ClassDescriptor cn=(ClassDescriptor)it.next();
 122             super.generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
 123         }
 124         outclassdefs.close();
 125
 126         if (state.TASK) {
 127             /* Map flags to integers */
 128             /* The runtime keeps track of flags using these integers */
 129             it=state.getClassSymbolTable().getDescriptorsIterator();
 130             while(it.hasNext()) {
 131                 ClassDescriptor cn=(ClassDescriptor)it.next();
 132                 super.mapFlags(cn);
 133             }
 134             /* Generate Tasks */
 135             generateTaskStructs(outstructs, outmethodheader);
 136
 137             /* Outputs generic task structures if this is a task
 138                program */
 139             outputTaskTypes(outtask);
 140         }
 141
 142         /* Build the actual methods */
 143         super.outputMethods(outmethod);
 144
 145         if (state.TASK) {
 146             Iterator[] taskits = new Iterator[this.coreNum];
 147             for(int i = 0; i < taskits.length; ++i) {
 148                 taskits[i] = null;
 149             }
 150             int[] numtasks = new int[this.coreNum];
 151             int[][] numqueues = new int[this.coreNum][numclasses];
 152             /* Output code for tasks */
 153             for(int i = 0; i < this.scheduling.size(); ++i) {
 154                 this.currentSchedule = this.scheduling.elementAt(i);
 155                 outputTaskCode(outtaskdefs, outmethod, outtask, taskits, numtasks, numqueues);
 156             }
 157
 158             // Output task descriptors
 159             boolean comma = false;
 160             outtaskdefs.println("struct parameterwrapper ** objectqueues[][NUMCLASSES] = {");
 161             boolean needcomma = false;
 162             for(int i = 0; i < numqueues.length ; ++i) {
 163                 if(needcomma) {
 164                     outtaskdefs.println(",");
 165                 } else {
 166                     needcomma = true;
 167                 }
 168                 outtaskdefs.println("/* object queue array for core " + i + "*/");
 169                 outtaskdefs.print("{");
 170                 comma = false;
 171                 for(int j = 0; j < numclasses; ++j) {
 172                     if(comma) {
 173                         outtaskdefs.println(",");
 174                     } else {
 175                         comma = true;
 176                     }
 177                     outtaskdefs.print(this.objqarrayprefix + j + "_core" + i);
 178                 }
 179                 outtaskdefs.print("}");
 180             }
 181             outtaskdefs.println("};");
 182             needcomma = false;
 183             outtaskdefs.println("int numqueues[][NUMCLASSES] = {");
 184             for(int i = 0; i < numqueues.length; ++i) {
 185                 if(needcomma) {
 186                     outtaskdefs.println(",");
 187                 } else {
 188                     needcomma = true;
 189                 }
 190                 int[] tmparray = numqueues[i];
 191                 comma = false;
 192                 outtaskdefs.print("{");
 193                 for(int j = 0; j < tmparray.length; ++j) {
 194                     if(comma) {
 195                         outtaskdefs.print(",");
 196                     } else {
 197                         comma = true;
 198                     }
 199                     outtaskdefs.print(tmparray[j]);
 200                 }
 201                 outtaskdefs.print("}");
 202             }
 203             outtaskdefs.println("};");
 204
 205             /* parameter queue arrays for all the tasks*/
 206             outtaskdefs.println("struct parameterwrapper *** paramqueues[] = {");
 207             needcomma = false;
 208             for(int i = 0; i < this.coreNum ; ++i) {
 209                 if(needcomma) {
 210                     outtaskdefs.println(",");
 211                 } else {
 212                     needcomma = true;
 213                 }
 214                 outtaskdefs.println("/* parameter queue array for core " + i + "*/");
 215                 outtaskdefs.print(this.coreqarrayprefix + i);
 216             }
 217             outtaskdefs.println("};");
 218
 219             for(int i = 0; i < taskits.length; ++i) {
 220                 outtaskdefs.println("struct taskdescriptor * " + this.taskarrayprefix + i + "[]={");
 221                 Iterator taskit = taskits[i];
 222                 if(taskit != null) {
 223                     boolean first=true;
 224                     while(taskit.hasNext()) {
 225                         TaskDescriptor td=(TaskDescriptor)taskit.next();
 226                         if (first)
 227                             first=false;
 228                         else
 229                             outtaskdefs.println(",");
 230                         outtaskdefs.print("&" + this.taskprefix +td.getCoreSafeSymbol(i));
 231                     }
 232                 }
 233                 outtaskdefs.println();
 234                 outtaskdefs.println("};");
 235             }
 236             outtaskdefs.println("struct taskdescriptor ** taskarray[]= {");
 237             comma = false;
 238             for(int i = 0; i < taskits.length; ++i) {
 239                 if (comma)
 240                     outtaskdefs.println(",");
 241                 else
 242                     comma = true;
 243                 outtaskdefs.print(this.taskarrayprefix + i);
 244             }
 245             outtaskdefs.println("};");
 246
 247             outtaskdefs.print("int numtasks[]= {");
 248             comma = false;
 249             for(int i = 0; i < taskits.length; ++i) {
 250                 if (comma)
 251                     outtaskdefs.print(",");
 252                 else
 253                     comma=true;
 254                 outtaskdefs.print(numtasks[i]);
 255             }
 256             outtaskdefs.println("};");
 257             outtaskdefs.println("int corenum=0;");
 258
 259             outtaskdefs.close();
 260             outtask.println("#endif");
 261             outtask.close();
 262             /* Record maximum number of task parameters */
 263             outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
 264             /* Record maximum number of all types, i.e. length of classsize[] */
 265             outstructs.println("#define NUMTYPES "+(state.numClasses() + state.numArrays()));
 266             /* Record number of cores */
 267             outstructs.println("#define NUMCORES "+this.coreNum);
 268             /* Record number of core containing startup task */
 269             outstructs.println("#define STARTUPCORE "+this.startupcorenum);
 270             //outstructs.println("#define STARTUPCORESTR \""+this.startupcorenum+"\"");
 271         } //else if (state.main!=null) {
 272         /* Generate main method */
 273         // outputMainMethod(outmethod);
 274         //}
 275
 276         /* Generate information for task with optional parameters */
 277         /*if (state.TASK&&state.OPTIONAL){
 278             generateOptionalArrays(outoptionalarrays, optionalheaders, state.getAnalysisResult(), state.getOptionalTaskDescriptors());
 279             outoptionalarrays.close();
 280         } */
 281
 282         /* Output structure definitions for repair tool */
 283         /*if (state.structfile!=null) {
 284             buildRepairStructs(outrepairstructs);
 285             outrepairstructs.close();
 286         }*/
 287
 288         /* Close files */
 289         outmethodheader.println("#endif");
 290         outmethodheader.close();
 291         outmethod.close();
 292         outstructs.println("#endif");
 293         outstructs.close();
 294     }
 295
 296     /** This function outputs (1) structures that parameters are
 297      * passed in (when PRECISE GC is enabled) and (2) function
 298      * prototypes for the tasks */
 299
 300     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
 301         /* Cycle through tasks */
 302         for(int i = 0; i < this.scheduling.size(); ++i) {
 303             Schedule tmpschedule = this.scheduling.elementAt(i);
 304             int num = tmpschedule.getCoreNum();
 305             Iterator<TaskDescriptor> taskit = tmpschedule.getTasks().iterator();
 306
 307             while(taskit.hasNext()) {
 308                 /* Classify parameters */
 309                 TaskDescriptor task=taskit.next();
 310                 FlatMethod fm=state.getMethodFlat(task);
 311                 super.generateTempStructs(fm, null);
 312
 313                 ParamsObject objectparams=(ParamsObject) paramstable.get(task);
 314                 TempObject objecttemps=(TempObject) tempstable.get(task);
 315
 316                 /* Output parameter structure */
 317                 if (GENERATEPRECISEGC) {
 318                     output.println("struct "+task.getCoreSafeSymbol(num)+"_params {");
 319                     output.println("  int size;");
 320                     output.println("  void * next;");
 321                     for(int j=0;j<objectparams.numPointers();j++) {
 322                         TempDescriptor temp=objectparams.getPointer(j);
 323                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
 324                     }
 325
 326                     output.println("};\n");
 327                     if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
 328                         maxtaskparams=objectparams.numPointers()+fm.numTags();
 329                     }
 330                 }
 331
 332                 /* Output temp structure */
 333                 if (GENERATEPRECISEGC) {
 334                     output.println("struct "+task.getCoreSafeSymbol(num)+"_locals {");
 335                     output.println("  int size;");
 336                     output.println("  void * next;");
 337                     for(int j=0;j<objecttemps.numPointers();j++) {
 338                         TempDescriptor temp=objecttemps.getPointer(j);
 339                         if (temp.getType().isNull())
 340                             output.println("  void * "+temp.getSafeSymbol()+";");
 341                         else if(temp.getType().isTag())
 342                             output.println("  struct "+
 343                                     (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
 344                         else
 345                             output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
 346                     }
 347                     output.println("};\n");
 348                 }
 349
 350                 /* Output task declaration */
 351                 headersout.print("void " + task.getCoreSafeSymbol(num)+"(");
 352
 353                 if (GENERATEPRECISEGC) {
 354                     headersout.print("struct "+task.getCoreSafeSymbol(num)+"_params * "+paramsprefix);
 355                 } else
 356                     headersout.print("void * parameterarray[]");
 357                 headersout.println(");\n");
 358             }
 359         }
 360
 361     }
 362
 363     /* This method outputs code for each task. */
 364
 365     private void outputTaskCode(PrintWriter outtaskdefs, PrintWriter outmethod, PrintWriter outtask, Iterator[] taskits, int[] numtasks,
 366                                 int[][] numqueues) {
 367         /* Compile task based program */
 368         outtaskdefs.println("#include \"task.h\"");
 369         outtaskdefs.println("#include \"methodheaders.h\"");
 370
 371         /* Output object transfer queues into method.c*/
 372         generateObjectTransQueues(outmethod);
 373
 374         //Vector[] qnames = new Vector[2];
 375         int numclasses = numqueues[0].length;
 376         Vector qnames[]= new Vector[numclasses];
 377         for(int i = 0; i < qnames.length; ++i) {
 378             qnames[i] = null;
 379         }
 380         Iterator<TaskDescriptor> taskit=this.currentSchedule.getTasks().iterator();
 381         while(taskit.hasNext()) {
 382             TaskDescriptor td=taskit.next();
 383             FlatMethod fm=state.getMethodFlat(td);
 384             generateTaskMethod(fm, null, outmethod);
 385             generateTaskDescriptor(outtaskdefs, outtask, fm, td, qnames);
 386         }
 387
 388         // generate queuearray for this core
 389         int num = this.currentSchedule.getCoreNum();
 390         boolean comma = false;
 391         for(int i = 0; i < qnames.length; ++i) {
 392             outtaskdefs.println("/* object queue array for class " + i + " on core " + num + "*/");
 393             outtaskdefs.println("struct parameterwrapper * " + this.objqarrayprefix + i + "_core" + num + "[] = {");
 394             comma = false;
 395             Vector tmpvector = qnames[i];
 396             if(tmpvector != null) {
 397                 for(int j = 0; j < tmpvector.size(); ++j) {
 398                     if(comma) {
 399                         outtaskdefs.println(",");
 400                     } else {
 401                         comma = true;
 402                     }
 403                    outtaskdefs.print("&" + tmpvector.elementAt(j));
 404                 }
 405                 numqueues[num][i] = tmpvector.size();
 406             } else {
 407                 numqueues[num][i] = 0;
 408             }
 409             outtaskdefs.println("};");
 410         }
 411
 412         /* All the queues for tasks residing on this core*/
 413         comma = false;
 414         outtaskdefs.println("/* object queue array for tasks on core " + num + "*/");
 415         outtaskdefs.println("struct parameterwrapper ** " + this.coreqarrayprefix + num + "[] = {");
 416         taskit=this.currentSchedule.getTasks().iterator();
 417         while(taskit.hasNext()) {
 418             if (comma) {
 419                 outtaskdefs.println(",");
 420             } else {
 421                 comma = true;
 422             }
 423             TaskDescriptor td=taskit.next();
 424             outtaskdefs.print(this.paramqarrayprefix + td.getCoreSafeSymbol(num));
 425         }
 426         outtaskdefs.println("};");
 427
 428         // record the iterator of tasks on this core
 429         taskit=this.currentSchedule.getTasks().iterator();
 430         taskits[num] = taskit;
 431         numtasks[num] = this.currentSchedule.getTasks().size();
 432     }
 433
 434     /** Prints out definitions for generic task structures */
 435     private void outputTaskTypes(PrintWriter outtask) {
 436         outtask.println("#ifndef _TASK_H");
 437         outtask.println("#define _TASK_H");
 438         outtask.println("#include \"ObjectHash.h\"");
 439         outtask.println("#include \"structdefs.h\"");
 440         outtask.println("#include \"Queue.h\"");
 441         outtask.println("#include <string.h>");
 442         outtask.println("#ifdef RAW");
 443         outtask.println("#include <raw.h>");
 444         outtask.println("#endif");
 445         outtask.println();
 446         outtask.println("struct tagobjectiterator {");
 447         outtask.println("  int istag; /* 0 if object iterator, 1 if tag iterator */");
 448         outtask.println("  struct ObjectIterator it; /* Object iterator */");
 449         outtask.println("  struct ObjectHash * objectset;");
 450         outtask.println("#ifdef OPTIONAL");
 451         outtask.println("  int failedstate;");
 452         outtask.println("#endif");
 453         outtask.println("  int slot;");
 454         outtask.println("  int tagobjindex; /* Index for tag or object depending on use */");
 455         outtask.println("  /*if tag we have an object binding */");
 456         outtask.println("  int tagid;");
 457         outtask.println("  int tagobjectslot;");
 458         outtask.println("  /*if object, we may have one or more tag bindings */");
 459         outtask.println("  int numtags;");
 460         outtask.println("  int tagbindings[MAXTASKPARAMS-1]; /* list slots */");
 461         outtask.println("};");
 462         outtask.println();
 463         outtask.println("struct parameterwrapper {");
 464         outtask.println("  //int type;");
 465         outtask.println("  struct ObjectHash * objectset;");
 466         outtask.println("  int numberofterms;");
 467         outtask.println("  int * intarray;");
 468         outtask.println("  int numbertags;");
 469         outtask.println("  int * tagarray;");
 470         outtask.println("  struct taskdescriptor * task;");
 471         outtask.println("  int slot;");
 472         outtask.println("  struct tagobjectiterator iterators[MAXTASKPARAMS-1];");
 473         outtask.println("};");
 474         outtask.println();
 475         outtask.println("extern struct parameterwrapper ** objectqueues[][NUMCLASSES];");
 476         outtask.println("extern int numqueues[][NUMCLASSES];");
 477         outtask.println();
 478         outtask.println("struct parameterdescriptor {");
 479         outtask.println("  int type;");
 480         outtask.println("  int numberterms;");
 481         outtask.println("  int *intarray;");
 482         outtask.println("  struct parameterwrapper * queue;");
 483         outtask.println("  int numbertags;");
 484         outtask.println("  int *tagarray;");
 485         outtask.println("};");
 486         outtask.println();
 487         outtask.println("struct taskdescriptor {");
 488         outtask.println("  void * taskptr;");
 489         outtask.println("  int numParameters;");
 490         outtask.println("  int numTotal;");
 491         outtask.println("  struct parameterdescriptor **descriptorarray;");
 492         outtask.println("  char * name;");
 493         outtask.println("};");
 494         outtask.println();
 495         outtask.println("extern struct taskdescriptor ** taskarray[];");
 496         outtask.println("extern int numtasks[];");
 497         outtask.println("extern int corenum;");  // define corenum to identify different core
 498         outtask.println("extern struct parameterwrapper *** paramqueues[];");
 499         outtask.println();
 500     }
 501
 502     private void generateObjectTransQueues(PrintWriter output) {
 503         if(this.fsate2qnames == null) {
 504             this.fsate2qnames = new Hashtable[this.coreNum];
 505             for(int i = 0; i < this.fsate2qnames.length; ++i) {
 506                 this.fsate2qnames[i] = null;
 507             }
 508         }
 509         int num = this.currentSchedule.getCoreNum();
 510         assert(this.fsate2qnames[num] == null);
 511         Hashtable<FlagState, String> flag2qname = new Hashtable<FlagState, String>();
 512         this.fsate2qnames[num] = flag2qname;
 513         Hashtable<FlagState, Queue<Integer>> targetCoreTbl = this.currentSchedule.getTargetCoreTable();
 514         if(targetCoreTbl != null) {
 515             Object[] keys = targetCoreTbl.keySet().toArray();
 516             output.println();
 517             output.println("/* Object transfer queues for core" + num + ".*/");
 518             for(int i = 0; i < keys.length; ++i) {
 519                 FlagState tmpfstate = (FlagState)keys[i];
 520                 Object[] targetcores = targetCoreTbl.get(tmpfstate).toArray();
 521                 String queuename = this.otqueueprefix + tmpfstate.getClassDescriptor().getCoreSafeSymbol(num) + tmpfstate.getuid() + "___";
 522                 String queueins = queuename + "ins";
 523                 flag2qname.put(tmpfstate, queuename);
 524                 output.println("struct " + queuename + " {");
 525                 output.println("  int * cores;");
 526                 output.println("  int index;");
 527                 output.println("  int length;");
 528                 output.println("};");
 529                 output.print("int " + queuename + "cores[] = {");
 530                 for(int j = 0; j < targetcores.length; ++j) {
 531                     if(j > 0) {
 532                         output.print(", ");
 533                     }
 534                     output.print(((Integer)targetcores[j]).intValue());
 535                 }
 536                 output.println("};");
 537                 output.println("struct " + queuename + " " + queueins + "= {");
 538                 output.println(/*".cores = " + */queuename + "cores,");
 539                 output.println(/*".index = " + */"0,");
 540                 output.println(/*".length = " +*/ targetcores.length + "};");
 541             }
 542         }
 543         output.println();
 544     }
 545
 546     private void generateTaskMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
 547         /*if (State.PRINTFLAT)
 548             System.out.println(fm.printMethod());*/
 549         TaskDescriptor task=fm.getTask();
 550         assert(task != null);
 551         int num = this.currentSchedule.getCoreNum();
 552
 553         //ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:task);
 554         generateTaskHeader(fm, lb, task,output);
 555         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:task);
 556         /*if (state.DSM&&lb.getHasAtomic()) {
 557             output.println("transrecord_t * trans;");
 558         }*/
 559
 560         if (GENERATEPRECISEGC) {
 561             output.print("   struct "+task.getCoreSafeSymbol(num)+"_locals "+localsprefix+"={");
 562
 563             output.print(objecttemp.numPointers()+",");
 564             output.print(paramsprefix);
 565             for(int j=0;j<objecttemp.numPointers();j++)
 566                 output.print(", NULL");
 567             output.println("};");
 568         }
 569
 570         for(int i=0;i<objecttemp.numPrimitives();i++) {
 571             TempDescriptor td=objecttemp.getPrimitive(i);
 572             TypeDescriptor type=td.getType();
 573             if (type.isNull())
 574                 output.println("   void * "+td.getSafeSymbol()+";");
 575             else if (type.isClass()||type.isArray())
 576                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
 577             else
 578                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
 579         }
 580
 581         for(int i = 0; i < fm.numParameters(); ++i) {
 582             TempDescriptor temp = fm.getParameter(i);
 583             output.println("   int "+generateTempFlagName(fm, temp, lb)+" = "+super.generateTemp(fm, temp, lb)+
 584                "->flag;");
 585         }
 586
 587         /* Assign labels to FlatNode's if necessary.*/
 588
 589         Hashtable<FlatNode, Integer> nodetolabel=super.assignLabels(fm);
 590
 591         /* Check to see if we need to do a GC if this is a
 592          * multi-threaded program...*/
 593
 594         /*if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
 595             if (state.DSM&&lb.isAtomic())
 596                 output.println("checkcollect2(&"+localsprefix+",trans);");
 597             else
 598                 output.println("checkcollect(&"+localsprefix+");");
 599         }*/
 600
 601         /* Create queues to store objects need to be transferred to other cores and their destination*/
 602         output.println("   struct Queue * totransobjqueue = createQueue();");
 603         output.println("   struct transObjInfo * tmpObjInfo = NULL;");
 604
 605         /* generate print information for RAW version */
 606         output.println("#ifdef RAW");
 607         output.println("int tmpsum = 0;");
 608         output.println("char * taskname = \"" + task.getSymbol() + "\";");
 609         output.println("int tmplen = " + task.getSymbol().length() + ";");
 610         output.println("int tmpindex = 1;");
 611         output.println("for(;tmpindex < tmplen; tmpindex++) {");
 612         output.println("   tmpsum = tmpsum * 10 + *(taskname + tmpindex) - '0';");
 613         output.println("}");
 614         output.println("raw_test_pass(0xAAAA);");
 615         output.println("raw_test_pass_reg(tmpsum);");
 616         output.println("#endif");
 617
 618         for(int i = 0; i < fm.numParameters(); ++i) {
 619             TempDescriptor temp = fm.getParameter(i);
 620             output.println("   ++" + super.generateTemp(fm, temp, lb)+"->version;");
 621         }
 622
 623         /* Do the actual code generation */
 624         FlatNode current_node=null;
 625         HashSet tovisit=new HashSet();
 626         HashSet visited=new HashSet();
 627         tovisit.add(fm.getNext(0));
 628         while(current_node!=null||!tovisit.isEmpty()) {
 629             if (current_node==null) {
 630                 current_node=(FlatNode)tovisit.iterator().next();
 631                 tovisit.remove(current_node);
 632             }
 633             visited.add(current_node);
 634             if (nodetolabel.containsKey(current_node))
 635                 output.println("L"+nodetolabel.get(current_node)+":");
 636             /*if (state.INSTRUCTIONFAILURE) {
 637                 if (state.THREAD||state.DSM) {
 638                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
 639                 }
 640                 else
 641                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
 642             }*/
 643             if (current_node.numNext()==0) {
 644                 output.print("   ");
 645                 super.generateFlatNode(fm, lb, current_node, output);
 646                 if (current_node.kind()!=FKind.FlatReturnNode) {
 647                     output.println("   flushAll();");
 648                     outputTransCode(output);
 649                     output.println("   return;");
 650                 }
 651                 current_node=null;
 652             } else if(current_node.numNext()==1) {
 653                 output.print("   ");
 654                 super.generateFlatNode(fm, lb, current_node, output);
 655                 FlatNode nextnode=current_node.getNext(0);
 656                 if (visited.contains(nextnode)) {
 657                     output.println("goto L"+nodetolabel.get(nextnode)+";");
 658                     current_node=null;
 659                 } else
 660                     current_node=nextnode;
 661             } else if (current_node.numNext()==2) {
 662                 /* Branch */
 663                 output.print("   ");
 664                 super.generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
 665                 if (!visited.contains(current_node.getNext(1)))
 666                     tovisit.add(current_node.getNext(1));
 667                 if (visited.contains(current_node.getNext(0))) {
 668                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
 669                     current_node=null;
 670                 } else
 671                     current_node=current_node.getNext(0);
 672             } else throw new Error();
 673         }
 674
 675         output.println("}\n\n");
 676     }
 677
 678     /** This method outputs TaskDescriptor information */
 679     private void generateTaskDescriptor(PrintWriter output, PrintWriter outtask, FlatMethod fm, TaskDescriptor task, Vector[] qnames) {
 680         int num = this.currentSchedule.getCoreNum();
 681
 682         output.println("/* TaskDescriptor information for task " + task.getSymbol() + " on core " + num + "*/");
 683
 684         for (int i=0;i<task.numParameters();i++) {
 685             VarDescriptor param_var=task.getParameter(i);
 686             TypeDescriptor param_type=task.getParamType(i);
 687             FlagExpressionNode param_flag=task.getFlag(param_var);
 688             TagExpressionList param_tag=task.getTag(param_var);
 689
 690             int dnfterms;
 691             if (param_flag==null) {
 692                 output.println("int parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+"[]={");
 693                 output.println("0x0, 0x0 };");
 694                 dnfterms=1;
 695             } else {
 696                 DNFFlag dflag=param_flag.getDNF();
 697                 dnfterms=dflag.size();
 698
 699                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 700                 output.println("int parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+"[]={");
 701                 for(int j=0;j<dflag.size();j++) {
 702                     if (j!=0)
 703                         output.println(",");
 704                     Vector term=dflag.get(j);
 705                     int andmask=0;
 706                     int checkmask=0;
 707                     for(int k=0;k<term.size();k++) {
 708                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 709                         FlagDescriptor fd=dfa.getFlag();
 710                         boolean negated=dfa.getNegated();
 711                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 712                         andmask|=flagid;
 713                         if (!negated)
 714                             checkmask|=flagid;
 715                     }
 716                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 717                 }
 718                 output.println("};");
 719             }
 720
 721             output.println("int parametertag_"+i+"_"+task.getCoreSafeSymbol(num)+"[]={");
 722             //BUG...added next line to fix, test with any task program
 723             if (param_tag!=null)
 724                 for(int j=0;j<param_tag.numTags();j++) {
 725                     if (j!=0)
 726                         output.println(",");
 727                     /* for each tag we need */
 728                     /* which slot it is */
 729                     /* what type it is */
 730                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 731                     TempDescriptor tmp=param_tag.getTemp(j);
 732                     int slot=fm.getTagInt(tmp);
 733                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 734                 }
 735             output.println("};");
 736
 737             // generate object queue for this parameter
 738             String qname = this.objqueueprefix+i+"_"+task.getCoreSafeSymbol(num);
 739             if(param_type.getClassDesc().getSymbol().equals("StartupObject")) {
 740                 this.startupcorenum = num;
 741             }
 742             if(qnames[param_type.getClassDesc().getId()] == null) {
 743                 qnames[param_type.getClassDesc().getId()] = new Vector();
 744             }
 745             qnames[param_type.getClassDesc().getId()].addElement(qname);
 746             outtask.println("extern struct parameterwrapper " + qname + ";");
 747             output.println("struct parameterwrapper " + qname + "={");
 748             output.println(".objectset = 0,"); // objectset
 749             output.println("/* number of DNF terms */ .numberofterms = "+dnfterms+","); // numberofterms
 750             output.println(".intarray = parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+","); // intarray
 751             // numbertags
 752             if (param_tag!=null)
 753                 output.println("/* number of tags */ .numbertags = "+param_tag.numTags()+",");
 754             else
 755                 output.println("/* number of tags */ .numbertags = 0,");
 756             output.println(".tagarray = parametertag_"+i+"_"+task.getCoreSafeSymbol(num)+","); // tagarray
 757             output.println(".task = 0,"); // task
 758             output.println(".slot = " + i + ",");// slot
 759             // iterators
 760             output.println("};");
 761
 762             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getCoreSafeSymbol(num)+"={");
 763             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 764             output.println("/* number of DNF terms */"+dnfterms+",");
 765             output.println("parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+","); // intarray
 766             output.println("&" + qname + ","); // queue
 767             //BUG, added next line to fix and else statement...test
 768             //with any task program
 769             if (param_tag!=null)
 770                 output.println("/* number of tags */"+param_tag.numTags()+",");
 771             else
 772                 output.println("/* number of tags */ 0,");
 773             output.println("parametertag_"+i+"_"+task.getCoreSafeSymbol(num)); // tagarray
 774             output.println("};");
 775         }
 776
 777         /* parameter queues for this task*/
 778         output.println("struct parameterwrapper * " + this.paramqarrayprefix + task.getCoreSafeSymbol(num)+"[] = {");
 779         for (int i=0;i<task.numParameters();i++) {
 780             if (i!=0)
 781                 output.println(",");
 782             output.print("&" + this.objqueueprefix + i + "_" + task.getCoreSafeSymbol(num));
 783         }
 784         output.println("};");
 785
 786         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getCoreSafeSymbol(num)+"[] = {");
 787         for (int i=0;i<task.numParameters();i++) {
 788             if (i!=0)
 789                 output.println(",");
 790             output.print("&parameter_"+i+"_"+task.getCoreSafeSymbol(num));
 791         }
 792         output.println("};");
 793
 794         output.println("struct taskdescriptor " + this.taskprefix + task.getCoreSafeSymbol(num) + "={");
 795         output.println("&"+task.getCoreSafeSymbol(num)+",");
 796         output.println("/* number of parameters */" +task.numParameters() + ",");
 797         int numtotal=task.numParameters()+fm.numTags();
 798         output.println("/* number total parameters */" +numtotal + ",");
 799         output.println("parameterdescriptors_"+task.getCoreSafeSymbol(num)+",");
 800         output.println("\""+task.getSymbol()+"\"");
 801         output.println("};");
 802
 803         output.println();
 804     }
 805
 806     /** This method generates header information for the task
 807      *  referenced by the Descriptor des. */
 808
 809     private void generateTaskHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
 810         /* Print header */
 811         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
 812         TaskDescriptor task=(TaskDescriptor) des;
 813
 814         int num = this.currentSchedule.getCoreNum();
 815         //catch the constructor case
 816         output.print("void ");
 817         output.print(task.getCoreSafeSymbol(num)+"(");
 818
 819         boolean printcomma=false;
 820         if (GENERATEPRECISEGC) {
 821             output.print("struct "+task.getCoreSafeSymbol(num)+"_params * "+paramsprefix);
 822             printcomma=true;
 823         }
 824
 825         /*if (state.DSM&&lb.isAtomic()) {
 826             if (printcomma)
 827                 output.print(", ");
 828             output.print("transrecord_t * trans");
 829             printcomma=true;
 830         }*/
 831
 832         if (!GENERATEPRECISEGC) {
 833             /* Imprecise Task */
 834             output.println("void * parameterarray[]) {");
 835             /* Unpack variables */
 836             for(int i=0;i<objectparams.numPrimitives();i++) {
 837                 TempDescriptor temp=objectparams.getPrimitive(i);
 838                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
 839             }
 840             for(int i=0;i<fm.numTags();i++) {
 841                 TempDescriptor temp=fm.getTag(i);
 842                 int offset=i+objectparams.numPrimitives();
 843                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+i+"___=parameterarray["+offset+"];");// add i to fix bugs of duplicate definition of tags
 844             }
 845
 846             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
 847                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
 848         } else output.println(") {");
 849     }
 850
 851     protected void generateFlagOrAnd(FlatFlagActionNode ffan, FlatMethod fm, LocalityBinding lb, TempDescriptor temp,
 852             PrintWriter output, int ormask, int andmask) {
 853         if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
 854             output.println("flagorandinit("+super.generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
 855         } else {
 856             int num = this.currentSchedule.getCoreNum();
 857             ClassDescriptor cd = temp.getType().getClassDesc();
 858             Vector<FlagState> initfstates = ffan.getInitFStates(cd);
 859             for(int i = 0; i < initfstates.size(); ++i) {
 860                 FlagState tmpFState = initfstates.elementAt(i);
 861                 output.println("{");
 862                 QueueInfo qinfo = outputqueues(tmpFState, num, output, false);
 863                 output.println("flagorand("+super.generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+
 864                                ", 0x"+Integer.toHexString(andmask)+", " + qinfo.qname +
 865                                ", " + qinfo.length + ");");
 866                 output.println("}");
 867             }
 868         }
 869     }
 870
 871     protected void generateObjectDistribute(FlatFlagActionNode ffan, FlatMethod fm, LocalityBinding lb, TempDescriptor temp,
 872                                             PrintWriter output) {
 873         ClassDescriptor cd = temp.getType().getClassDesc();
 874         Vector<FlagState> initfstates = null;
 875         Vector[] targetFStates = null;
 876         if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
 877             targetFStates = new Vector[1];
 878             targetFStates[0] = ffan.getTargetFStates4NewObj(cd);
 879         } else {
 880             initfstates = ffan.getInitFStates(cd);
 881             targetFStates = new Vector[initfstates.size()];
 882             for(int i = 0; i < initfstates.size(); ++i) {
 883                 FlagState fs = initfstates.elementAt(i);
 884                 targetFStates[i] = ffan.getTargetFStates(fs);
 885
 886                 if(!fs.isSetmask()) {
 887                     Hashtable flags=(Hashtable)flagorder.get(cd);
 888                     int andmask=0;
 889                     int checkmask=0;
 890                     Iterator it_flags = fs.getFlags();
 891                     while(it_flags.hasNext()) {
 892                         FlagDescriptor fd = (FlagDescriptor)it_flags.next();
 893                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 894                         andmask|=flagid;
 895                         checkmask|=flagid;
 896                     }
 897                     fs.setAndmask(andmask);
 898                     fs.setCheckmask(checkmask);
 899                     fs.setSetmask(true);
 900                 }
 901             }
 902         }
 903         boolean isolate = true; // check if this flagstate can associate to some task with multiple params which can
 904                                 // reside on multiple cores
 905         if((this.currentSchedule == null) && (fm.getMethod().getClassDesc().getSymbol().equals("ServerSocket"))) {
 906             // ServerSocket object will always reside on current core
 907             for(int j = 0; j < targetFStates.length; ++j) {
 908                 if(initfstates != null) {
 909                     FlagState fs = initfstates.elementAt(j);
 910                     output.println("if(" + generateTempFlagName(fm, temp, lb) + "&(0x" + Integer.toHexString(fs.getAndmask())
 911                             + ")==(0x" + Integer.toHexString(fs.getCheckmask()) + ")) {");
 912                 }
 913                 Vector<FlagState> tmpfstates = (Vector<FlagState>)targetFStates[j];
 914                 for(int i = 0; i < tmpfstates.size(); ++i) {
 915                     FlagState tmpFState = tmpfstates.elementAt(i);
 916                     // TODO
 917                     // may have bugs here
 918                     output.println("/* reside on this core*");
 919                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
 920                 }
 921                 if(initfstates != null) {
 922                     output.println("}");
 923                 }
 924             }
 925             return;
 926         }
 927
 928         int num = this.currentSchedule.getCoreNum();
 929         Hashtable<FlagState, Queue<Integer>> targetCoreTbl = this.currentSchedule.getTargetCoreTable();
 930         for(int j = 0; j < targetFStates.length; ++j) {
 931             FlagState fs = null;
 932             if(initfstates != null) {
 933                 fs = initfstates.elementAt(j);
 934                 output.println("if((" + generateTempFlagName(fm, temp, lb) + "&(0x" + Integer.toHexString(fs.getAndmask())
 935                         + "))==(0x" + Integer.toHexString(fs.getCheckmask()) + ")) {");
 936             }
 937             Vector<FlagState> tmpfstates = (Vector<FlagState>)targetFStates[j];
 938             for(int i = 0; i < tmpfstates.size(); ++i) {
 939                 FlagState tmpFState = tmpfstates.elementAt(i);
 940
 941                 if(this.currentSchedule.getAllyCoreTable() == null) {
 942                     isolate = true;
 943                 } else {
 944                     isolate = (this.currentSchedule.getAllyCoreTable().get(tmpFState) == null) ||
 945                                 (this.currentSchedule.getAllyCoreTable().get(tmpFState).size() == 0);
 946                 }
 947                 if(!isolate) {
 948                     // indentify this object as a shared object
 949                     // isolate flag is initially set as 1, once this flag is set as 0, it is never reset to 1, i.e. once an object
 950                     // is shared, it maybe shared all the time afterwards
 951                     output.println("if(" + super.generateTemp(fm, temp, lb) + "->isolate == 1) {");
 952                     output.println("  " + super.generateTemp(fm, temp, lb) + "->isolate = 0;");
 953                     output.println("  " + super.generateTemp(fm, temp, lb) + "->original = (struct ___Object___ *)" + super.generateTemp(fm, temp, lb) + ";");
 954                     output.println("}");
 955                 }
 956
 957                 Vector<Integer> sendto = new Vector<Integer>();
 958                 Queue<Integer> queue = null;
 959                 if(targetCoreTbl != null) {
 960                     queue = targetCoreTbl.get(tmpFState);
 961                 }
 962                 if((queue != null) &&
 963                         ((queue.size() != 1) ||
 964                                 ((queue.size() == 1) && (queue.element().intValue() != num)))) {
 965                     // this object may be transferred to other cores
 966                     String queuename = (String)this.fsate2qnames[num].get(tmpFState);
 967                     String queueins = queuename + "ins";
 968
 969                     Object[] cores = queue.toArray();
 970                     String index = "0";
 971                     Integer targetcore = (Integer)cores[0];
 972                     if(queue.size() > 1) {
 973                         index = queueins + ".index";
 974                     }
 975                     if(queue.size() > 1) {
 976                         output.println("switch(" + queueins + ".index % " + queueins + ".length) {");
 977                         for(int k = 0; k < cores.length; ++k) {
 978                             output.println("case " + k + ":");
 979                             targetcore = (Integer)cores[k];
 980                             if(targetcore.intValue() == num) {
 981                                 output.println("/* reside on this core*/");
 982                                 if(isolate) {
 983                                     output.println("{");
 984                                     QueueInfo qinfo = outputqueues(tmpFState, num, output, true);
 985                                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", " + qinfo.qname +
 986                                             ", " + qinfo.length + ");");
 987                                     output.println("}");
 988                                 } else {
 989                                     // TODO
 990                                     // really needed?
 991                                     output.println("/* possibly needed by multi-parameter tasks on this core*/");
 992                                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
 993                                 }
 994                             } else {
 995                                 if(!isolate) {
 996                                     // TODO
 997                                     // Is it possible to decide the actual queues?
 998                                     output.println("/* possibly needed by multi-parameter tasks on this core*/");
 999                                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
1000                                 }
1001                                 output.println("/* transfer to core " + targetcore.toString() + "*/");
1002                                 output.println("{");
1003                                 // enqueue this object and its destinations for later process
1004                                 // all the possible queues
1005                                 QueueInfo qinfo = null;
1006                                 FlagState targetFS = this.currentSchedule.getTargetFState(tmpFState);
1007                                 if(targetFS != null) {
1008                                     qinfo = outputtransqueues(targetFS, targetcore, output);
1009                                 } else {
1010                                     qinfo = outputtransqueues(tmpFState, targetcore, output);
1011                                 }
1012                                 output.println("tmpObjInfo = RUNMALLOC(sizeof(struct transObjInfo));");
1013                                 output.println("tmpObjInfo->objptr = (void *)" + super.generateTemp(fm, temp, lb) + ";");
1014                                 output.println("tmpObjInfo->targetcore = "+targetcore.toString()+";");
1015                                 output.println("tmpObjInfo->queues = " + qinfo.qname + ";");
1016                                 output.println("tmpObjInfo->length = " + qinfo.length + ";");
1017                                 output.println("addNewItem(totransobjqueue, (void*)tmpObjInfo);");
1018                                 output.println("}");
1019                                 sendto.add(targetcore);
1020                             }
1021                             output.println("break;");
1022                         }
1023                         output.println("}");
1024                     } else {
1025                         if(!isolate) {
1026                             // TODO
1027                             // Is it possible to decide the actual queues?
1028                             output.println("/* possibly needed by multi-parameter tasks on this core*/");
1029                             output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
1030                         }
1031                         output.println("/* transfer to core " + targetcore.toString() + "*/");
1032                         output.println("{");
1033                         // enqueue this object and its destinations for later process
1034                         // all the possible queues
1035                         QueueInfo qinfo = null;
1036                         FlagState targetFS = this.currentSchedule.getTargetFState(tmpFState);
1037                         if(targetFS != null) {
1038                             qinfo = outputtransqueues(targetFS, targetcore, output);
1039                         } else {
1040                             qinfo = outputtransqueues(tmpFState, targetcore, output);
1041                         }
1042                         output.println("tmpObjInfo = RUNMALLOC(sizeof(struct transObjInfo));");
1043                         output.println("tmpObjInfo->objptr = (void *)" + super.generateTemp(fm, temp, lb) + ";");
1044                         output.println("tmpObjInfo->targetcore = "+targetcore.toString()+";");
1045                         output.println("tmpObjInfo->queues = " + qinfo.qname + ";");
1046                         output.println("tmpObjInfo->length = " + qinfo.length + ";");
1047                         output.println("addNewItem(totransobjqueue, (void*)tmpObjInfo);");
1048                         output.println("}");
1049                         sendto.add(targetcore);
1050                     }
1051                     output.println("/* increase index*/");
1052                     output.println("++" + queueins + ".index;");
1053                 } else {
1054                     // this object will reside on current core
1055                     output.println("/* reside on this core*/");
1056                     if(isolate) {
1057                         output.println("{");
1058                         QueueInfo qinfo = outputqueues(tmpFState, num, output, true);
1059                         output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", " + qinfo.qname +
1060                                 ", " + qinfo.length + ");");
1061                         output.println("}");
1062                     } else {
1063                         // TODO
1064                         // really needed?
1065                         output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
1066                     }
1067                 }
1068
1069                 // codes for multi-params tasks
1070                 if(!isolate) {
1071                     // flagstate associated with some multi-params tasks
1072                     // need to be send to other cores
1073                     Vector<Integer> targetcores = this.currentSchedule.getAllyCores(tmpFState);
1074                     output.println("/* send the shared object to possible queues on other cores*/");
1075                     for(int k = 0; k < targetcores.size(); ++k) {
1076                         // TODO
1077                         // add the information of exactly which queue
1078                         if(!sendto.contains(targetcores.elementAt(i))) {
1079                             // previously not sended to this target core
1080                             // enqueue this object and its destinations for later process
1081                             output.println("{");
1082                             // all the possible queues
1083                             QueueInfo qinfo = null;
1084                             FlagState targetFS = this.currentSchedule.getTargetFState(tmpFState);
1085                             if(targetFS != null) {
1086                                 qinfo = outputtransqueues(targetFS, targetcores.elementAt(i), output);
1087                             } else {
1088                                 qinfo = outputtransqueues(tmpFState, targetcores.elementAt(i), output);
1089                             }
1090                             output.println("tmpObjInfo = RUNMALLOC(sizeof(struct transObjInfo));");
1091                             output.println("tmpObjInfo->objptr = (void *)" + super.generateTemp(fm, temp, lb) + ";");
1092                             output.println("tmpObjInfo->targetcore = "+targetcores.elementAt(i).toString()+";");
1093                             output.println("tmpObjInfo->queues = " + qinfo.qname + ";");
1094                             output.println("tmpObjInfo->length = " + qinfo.length + ";");
1095                             output.println("addNewItem(totransobjqueue, (void*)tmpObjInfo);");
1096                             output.println("}");
1097                         }
1098                     }
1099                 }
1100             }
1101
1102             if(initfstates != null) {
1103                 output.println("}");
1104             }
1105         }
1106     }
1107
1108     private QueueInfo outputqueues(FlagState tmpFState, int num, PrintWriter output, boolean isEnqueue) {
1109         // queue array
1110         QueueInfo qinfo = new QueueInfo();
1111         qinfo.qname  = "queues_" + tmpFState.getLabel() + "_" + tmpFState.getiuid();
1112         output.println("struct parameterwrapper * " + qinfo.qname + "[] = {");
1113         Iterator it_edges = tmpFState.getEdgeVector().iterator();
1114         Vector<TaskDescriptor> residetasks = this.currentSchedule.getTasks();
1115         Vector<TaskDescriptor> tasks = new Vector<TaskDescriptor>();
1116         Vector<Integer> indexes = new Vector<Integer>();
1117         boolean comma = false;
1118         qinfo.length = 0;
1119         while(it_edges.hasNext()) {
1120             FEdge fe = (FEdge)it_edges.next();
1121             TaskDescriptor td = fe.getTask();
1122             int paraindex = fe.getIndex();
1123             if((!isEnqueue) || (isEnqueue && residetasks.contains(td))) {
1124                 if((!tasks.contains(td)) ||
1125                         ((tasks.contains(td)) && (paraindex != indexes.elementAt(tasks.indexOf(td)).intValue()))) {
1126                     tasks.addElement(td);
1127                     indexes.addElement(paraindex);
1128                     if(comma) {
1129                         output.println(",");
1130                     } else {
1131                         comma = true;
1132                     }
1133                     output.print("&" + this.objqueueprefix + paraindex + "_" + td.getCoreSafeSymbol(num));
1134                     ++qinfo.length;
1135                 }
1136             }
1137         }
1138         output.println("};");
1139         return qinfo;
1140     }
1141
1142     private QueueInfo outputtransqueues(FlagState tmpFState, int targetcore, PrintWriter output) {
1143         // queue array
1144         QueueInfo qinfo = new QueueInfo();
1145         qinfo.qname  = "queues_" + tmpFState.getLabel() + "_" + tmpFState.getiuid();
1146         output.println("int " + qinfo.qname + "_clone[] = {");
1147         Iterator it_edges = tmpFState.getEdgeVector().iterator();
1148         Vector<TaskDescriptor> residetasks = this.scheduling.get(targetcore).getTasks();
1149         Vector<TaskDescriptor> tasks = new Vector<TaskDescriptor>();
1150         Vector<Integer> indexes = new Vector<Integer>();
1151         boolean comma = false;
1152         qinfo.length = 0;
1153         while(it_edges.hasNext()) {
1154             FEdge fe = (FEdge)it_edges.next();
1155             TaskDescriptor td = fe.getTask();
1156             int paraindex = fe.getIndex();
1157             if(residetasks.contains(td)) {
1158                 if((!tasks.contains(td)) ||
1159                         ((tasks.contains(td)) && (paraindex != indexes.elementAt(tasks.indexOf(td)).intValue()))) {
1160                     tasks.addElement(td);
1161                     indexes.addElement(paraindex);
1162                     if(comma) {
1163                         output.println(",");
1164                     } else {
1165                         comma = true;
1166                     }
1167                     output.print(residetasks.indexOf(td) + ", ");
1168                     output.print(paraindex);
1169                     ++qinfo.length;
1170                 }
1171             }
1172         }
1173         output.println("};");
1174         output.println("int * " + qinfo.qname + " = RUNMALLOC(sizeof(int) * " + qinfo.length * 2 + ");");
1175         output.println("memcpy(" + qinfo.qname + ", (int *)" + qinfo.qname + "_clone, sizeof(int) * " + qinfo.length * 2 + ");");
1176         return qinfo;
1177     }
1178
1179     private class QueueInfo {
1180         public int length;
1181         public String qname;
1182     }
1183
1184     private String generateTempFlagName(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1185         MethodDescriptor md=fm.getMethod();
1186         TaskDescriptor task=fm.getTask();
1187         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1188
1189         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1190             return td.getSafeSymbol() + "_oldflag";
1191         }
1192
1193         if (objecttemps.isLocalPtr(td)) {
1194             return localsprefix+"_"+td.getSafeSymbol() + "_oldflag";
1195         }
1196
1197         if (objecttemps.isParamPtr(td)) {
1198             return paramsprefix+"_"+td.getSafeSymbol() + "_oldflag";
1199         }
1200         throw new Error();
1201     }
1202
1203     protected void outputTransCode(PrintWriter output) {
1204         output.println("while(0 == isEmpty(totransobjqueue)) {");
1205         output.println("   struct QueueItem * totransitem = getTail(totransobjqueue);");
1206
1207         output.println("   transferObject((struct transObjInfo *)totransitem->objectptr);");
1208         output.println("   RUNFREE(((struct transObjInfo *)totransitem->objectptr)->queues);");
1209         output.println("   RUNFREE(totransitem->objectptr);");
1210         output.println("   removeItem(totransobjqueue, totransitem);");
1211         output.println("}");
1212         output.println("freeQueue(totransobjqueue);");
1213     }
1214
1215     protected void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
1216         if (frn.getReturnTemp()!=null) {
1217             if (frn.getReturnTemp().getType().isPtr())
1218                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
1219             else
1220                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
1221         } else {
1222             if(fm.getTask() != null) {
1223                 output.println("flushAll();");
1224                 outputTransCode(output);
1225             }
1226             output.println("return;");
1227         }
1228     }
1229 }