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 objqs4startupprefix= "objqueuearray4startup";
  37     //String objqs4socketprefix= "objqueuearray4socket";
  38     String objqarrayprefix= "objqueuearray4class";
  39     String objqueueprefix = "objqueue4parameter_";
  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 outrepairstructs=null;
  69         PrintWriter outmethodheader=null;
  70         PrintWriter outmethod=null;
  71         PrintWriter outvirtual=null;
  72         PrintWriter outtask=null;
  73         PrintWriter outtaskdefs=null;
  74         //PrintWriter[] outtaskdefs=null;
  75         //PrintWriter outoptionalarrays=null;
  76         //PrintWriter optionalheaders=null;
  77
  78         try {
  79             outstructs=new PrintWriter(new FileOutputStream(PREFIX+"structdefs.h"), true);
  80             outmethodheader=new PrintWriter(new FileOutputStream(PREFIX+"methodheaders.h"), true);
  81             outclassdefs=new PrintWriter(new FileOutputStream(PREFIX+"classdefs.h"), true);
  82             outvirtual=new PrintWriter(new FileOutputStream(PREFIX+"virtualtable.h"), true);
  83             outmethod=new PrintWriter(new FileOutputStream(PREFIX+"methods.c"), true);
  84             if (state.TASK) {
  85                 outtask=new PrintWriter(new FileOutputStream(PREFIX+"task.h"), true);
  86                 outtaskdefs=new PrintWriter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
  87                 /*if(this.scheduling != null) {
  88                     outtaskdefs = new PrintWriter[this.coreNum];
  89                     for(int i = 0; i < this.scheduling.size(); ++i) {
  90                         this.currentSchedule = this.scheduling.elementAt(i);
  91                         outtaskdefs[this.currentSchedule.getCoreNum()] = new PrintWriter(
  92                                 new FileOutputStream(PREFIX+"taskdefs_"+this.currentSchedule.getCoreNum()+".c"), true);
  93                     }
  94                 }*/
  95                 /* optional
  96                  if (state.OPTIONAL){
  97                     outoptionalarrays=new PrintWriter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
  98                     optionalheaders=new PrintWriter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
  99                 } */
 100             }
 101             /*if (state.structfile!=null) {
 102                 outrepairstructs=new PrintWriter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
 103             }*/
 104         } catch (Exception e) {
 105             e.printStackTrace();
 106             System.exit(-1);
 107         }
 108
 109         /* Build the virtual dispatch tables */
 110         super.buildVirtualTables(outvirtual);
 111
 112         /* Output includes */
 113         outmethodheader.println("#ifndef METHODHEADERS_H");
 114         outmethodheader.println("#define METHODHEADERS_H");
 115         outmethodheader.println("#include \"structdefs.h\"");
 116         /*if (state.DSM)
 117             outmethodheader.println("#include \"dstm.h\"");*/
 118
 119         /* Output Structures */
 120         super.outputStructs(outstructs);
 121
 122         // Output the C class declarations
 123         // These could mutually reference each other
 124         super.outputClassDeclarations(outclassdefs);
 125
 126         // Output function prototypes and structures for parameters
 127         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 128         int numclasses = 0;
 129         while(it.hasNext()) {
 130             ++numclasses;
 131             ClassDescriptor cn=(ClassDescriptor)it.next();
 132             super.generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
 133         }
 134         outclassdefs.close();
 135
 136         if (state.TASK) {
 137             /* Map flags to integers */
 138             /* The runtime keeps track of flags using these integers */
 139             it=state.getClassSymbolTable().getDescriptorsIterator();
 140             while(it.hasNext()) {
 141                 ClassDescriptor cn=(ClassDescriptor)it.next();
 142                 super.mapFlags(cn);
 143             }
 144             /* Generate Tasks */
 145             generateTaskStructs(outstructs, outmethodheader);
 146
 147             /* Outputs generic task structures if this is a task
 148                program */
 149             outputTaskTypes(outtask);
 150         }
 151
 152         /* Build the actual methods */
 153         super.outputMethods(outmethod);
 154
 155         if (state.TASK) {
 156             Iterator[] taskits = new Iterator[this.coreNum];
 157             for(int i = 0; i < taskits.length; ++i) {
 158                 taskits[i] = null;
 159             }
 160             int[] numtasks = new int[this.coreNum];
 161             int[][] numqueues = new int[this.coreNum][numclasses];
 162             // arrays record the queues for startup object & socket object
 163             //int[][] numqueues = new int[2][this.coreNum];
 164             /* Output code for tasks */
 165             for(int i = 0; i < this.scheduling.size(); ++i) {
 166                 this.currentSchedule = this.scheduling.elementAt(i);
 167                 outputTaskCode(outtaskdefs, outmethod, outtask, taskits, numtasks, numqueues);
 168                 /*outputTaskCode(outtaskdefs[this.currentSchedule.getCoreNum()], outmethod);
 169                 outtaskdefs[this.currentSchedule.getCoreNum()].close();*/
 170             }
 171
 172             // Output task descriptors
 173             boolean comma = false;
 174             /*
 175             for(int index = 0; index < 2; ++index) {
 176                 if(index == 0) {
 177                     outtaskdefs.println("struct parameterwrapper ** objq4startupobj[] = {");
 178                 } else {
 179                     outtaskdefs.println("struct parameterwrapper ** objq4socketobj[] = {");
 180                 }
 181                 comma = false;
 182                 for(int i = 0; i < this.coreNum; ++i) {
 183                     if(comma) {
 184                         outtaskdefs.println(",");
 185                     } else {
 186                         comma = true;
 187                     }
 188                     outtaskdefs.println("/* object queue array for core " + i + "* /");
 189                     outtaskdefs.print(this.objqs4startupprefix + "_core" + i);
 190                 }
 191                 outtaskdefs.println("};");
 192                 if(index == 0) {
 193                     outtaskdefs.println("int numqueues4startupobj[] = {");
 194                 } else {
 195                     outtaskdefs.println("int numqueues4socketobj[] = {");
 196                 }
 197                 int[] tmparray = numqueues[index];
 198                 comma = false;
 199                 for(int i = 0; i < tmparray.length; ++i) {
 200                     if(comma) {
 201                         outtaskdefs.print(",");
 202                     } else {
 203                         comma = true;
 204                     }
 205                     outtaskdefs.print(tmparray[i]);
 206                 }
 207                 outtaskdefs.println("};");
 208             }*/
 209             outtaskdefs.println("struct parameterwrapper ** objectqueues[][NUMCLASSES] = {");
 210             boolean needcomma = false;
 211             for(int i = 0; i < numqueues.length ; ++i) {
 212                 if(needcomma) {
 213                     outtaskdefs.println(",");
 214                 } else {
 215                     needcomma = true;
 216                 }
 217                 outtaskdefs.println("/* object queue array for core " + i + "*/");
 218                 outtaskdefs.print("{");
 219                 comma = false;
 220                 for(int j = 0; j < numclasses; ++j) {
 221                     if(comma) {
 222                         outtaskdefs.println(",");
 223                     } else {
 224                         comma = true;
 225                     }
 226                     outtaskdefs.print(this.objqarrayprefix + j + "_core" + i);
 227                 }
 228                 outtaskdefs.print("}");
 229             }
 230             outtaskdefs.println("};");
 231             needcomma = false;
 232             outtaskdefs.println("int numqueues[][NUMCLASSES] = {");
 233             for(int i = 0; i < numqueues.length; ++i) {
 234                 if(needcomma) {
 235                     outtaskdefs.println(",");
 236                 } else {
 237                     needcomma = true;
 238                 }
 239                 int[] tmparray = numqueues[i];
 240                 comma = false;
 241                 outtaskdefs.print("{");
 242                 for(int j = 0; j < tmparray.length; ++j) {
 243                     if(comma) {
 244                         outtaskdefs.print(",");
 245                     } else {
 246                         comma = true;
 247                     }
 248                     outtaskdefs.print(tmparray[j]);
 249                 }
 250                 outtaskdefs.print("}");
 251             }
 252             outtaskdefs.println("};");
 253
 254             for(int i = 0; i < taskits.length; ++i) {
 255                 outtaskdefs.println("struct taskdescriptor * " + this.taskarrayprefix + i + "[]={");
 256                 Iterator taskit = taskits[i];
 257                 if(taskit != null) {
 258                     boolean first=true;
 259                     while(taskit.hasNext()) {
 260                         TaskDescriptor td=(TaskDescriptor)taskit.next();
 261                         if (first)
 262                             first=false;
 263                         else
 264                             outtaskdefs.println(",");
 265                         outtaskdefs.print("&" + this.taskprefix +td.getCoreSafeSymbol(i));
 266                     }
 267                 }
 268                 outtaskdefs.println();
 269                 outtaskdefs.println("};");
 270             }
 271             outtaskdefs.println("struct taskdescriptor ** taskarray[]= {");
 272             comma = false;
 273             for(int i = 0; i < taskits.length; ++i) {
 274                 if (comma)
 275                     outtaskdefs.println(",");
 276                 else
 277                     comma = true;
 278                 outtaskdefs.print(this.taskarrayprefix + i);
 279             }
 280             outtaskdefs.println("};");
 281
 282             outtaskdefs.print("int numtasks[]= {");
 283             comma = false;
 284             for(int i = 0; i < taskits.length; ++i) {
 285                 if (comma)
 286                     outtaskdefs.print(",");
 287                 else
 288                     comma=true;
 289                 outtaskdefs.print(numtasks[i]);
 290             }
 291             outtaskdefs.println("};");
 292
 293             outtaskdefs.println("#ifdef RAW");
 294             outtaskdefs.println("#include \"raw.h\"");
 295             outtaskdefs.println("int corenum=raw_get_tile_num();");
 296             outtaskdefs.println("#else");
 297             outtaskdefs.println("int corenum=0;");
 298             outtaskdefs.println("#endif");
 299
 300             outtaskdefs.close();
 301             outtask.println("#endif");
 302             outtask.close();
 303             /* Record maximum number of task parameters */
 304             outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
 305             /* Record maximum number of all types, i.e. length of classsize[] */
 306             outstructs.println("#define NUMTYPES "+(state.numClasses() + state.numArrays()));
 307             /* Record number of cores */
 308             outstructs.println("#define NUMCORES "+this.coreNum);
 309             /* Record number of core containing startup task */
 310             outstructs.println("#define STARTUPCORE "+this.startupcorenum);
 311             //outstructs.println("#define STARTUPCORESTR \""+this.startupcorenum+"\"");
 312         } //else if (state.main!=null) {
 313         /* Generate main method */
 314         // outputMainMethod(outmethod);
 315         //}
 316
 317         /* Generate information for task with optional parameters */
 318         /*if (state.TASK&&state.OPTIONAL){
 319             generateOptionalArrays(outoptionalarrays, optionalheaders, state.getAnalysisResult(), state.getOptionalTaskDescriptors());
 320             outoptionalarrays.close();
 321         } */
 322
 323         /* Output structure definitions for repair tool */
 324         /*if (state.structfile!=null) {
 325             buildRepairStructs(outrepairstructs);
 326             outrepairstructs.close();
 327         }*/
 328
 329         /* Close files */
 330         outmethodheader.println("#endif");
 331         outmethodheader.close();
 332         outmethod.close();
 333         outstructs.println("#endif");
 334         outstructs.close();
 335     }
 336
 337     /** This function outputs (1) structures that parameters are
 338      * passed in (when PRECISE GC is enabled) and (2) function
 339      * prototypes for the tasks */
 340
 341     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
 342         /* Cycle through tasks */
 343         for(int i = 0; i < this.scheduling.size(); ++i) {
 344             Schedule tmpschedule = this.scheduling.elementAt(i);
 345             int num = tmpschedule.getCoreNum();
 346             Iterator<TaskDescriptor> taskit = tmpschedule.getTasks().iterator();
 347
 348             while(taskit.hasNext()) {
 349                 /* Classify parameters */
 350                 TaskDescriptor task=taskit.next();
 351                 FlatMethod fm=state.getMethodFlat(task);
 352                 super.generateTempStructs(fm, null);
 353
 354                 ParamsObject objectparams=(ParamsObject) paramstable.get(task);
 355                 TempObject objecttemps=(TempObject) tempstable.get(task);
 356
 357                 /* Output parameter structure */
 358                 if (GENERATEPRECISEGC) {
 359                     output.println("struct "+task.getCoreSafeSymbol(num)+"_params {");
 360                     output.println("  int size;");
 361                     output.println("  void * next;");
 362                     for(int j=0;j<objectparams.numPointers();j++) {
 363                         TempDescriptor temp=objectparams.getPointer(j);
 364                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
 365                     }
 366
 367                     output.println("};\n");
 368                     if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
 369                         maxtaskparams=objectparams.numPointers()+fm.numTags();
 370                     }
 371                 }
 372
 373                 /* Output temp structure */
 374                 if (GENERATEPRECISEGC) {
 375                     output.println("struct "+task.getCoreSafeSymbol(num)+"_locals {");
 376                     output.println("  int size;");
 377                     output.println("  void * next;");
 378                     for(int j=0;j<objecttemps.numPointers();j++) {
 379                         TempDescriptor temp=objecttemps.getPointer(j);
 380                         if (temp.getType().isNull())
 381                             output.println("  void * "+temp.getSafeSymbol()+";");
 382                         else if(temp.getType().isTag())
 383                             output.println("  struct "+
 384                                     (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
 385                         else
 386                             output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
 387                     }
 388                     output.println("};\n");
 389                 }
 390
 391                 /* Output task declaration */
 392                 headersout.print("void " + task.getCoreSafeSymbol(num)+"(");
 393
 394                 if (GENERATEPRECISEGC) {
 395                     headersout.print("struct "+task.getCoreSafeSymbol(num)+"_params * "+paramsprefix);
 396                 } else
 397                     headersout.print("void * parameterarray[]");
 398                 headersout.println(");\n");
 399             }
 400         }
 401
 402     }
 403
 404     /* This method outputs code for each task. */
 405
 406     private void outputTaskCode(PrintWriter outtaskdefs, PrintWriter outmethod, PrintWriter outtask, Iterator[] taskits, int[] numtasks,
 407                                 int[][] numqueues) {
 408         /* Compile task based program */
 409         outtaskdefs.println("#include \"task.h\"");
 410         outtaskdefs.println("#include \"methodheaders.h\"");
 411
 412         /* Output object transfer queues into method.c*/
 413         generateObjectTransQueues(outmethod);
 414
 415         //Vector[] qnames = new Vector[2];
 416         int numclasses = numqueues[0].length;
 417         Vector qnames[]= new Vector[numclasses];
 418         for(int i = 0; i < qnames.length; ++i) {
 419             qnames[i] = null;
 420         }
 421         Iterator<TaskDescriptor> taskit=this.currentSchedule.getTasks().iterator();
 422         while(taskit.hasNext()) {
 423             TaskDescriptor td=taskit.next();
 424             FlatMethod fm=state.getMethodFlat(td);
 425             generateTaskMethod(fm, null, outmethod);
 426             generateTaskDescriptor(outtaskdefs, outtask, fm, td, qnames);
 427         }
 428
 429         // generate queuearray for this core
 430         int num = this.currentSchedule.getCoreNum();
 431         boolean comma = false;
 432         /*for(int i = 0; i < 2; ++i) {
 433             if(i == 0) {
 434                 outtaskdefs.println("/* object queue array for class StartupObject on core " + num + "* /");
 435             } else {
 436                 outtaskdefs.println("/* object queue array for class Socket on core " + num + "* /");
 437             }
 438             if(i == 0) {
 439                 outtaskdefs.println("struct parameterwrapper * " + this.objqs4startupprefix + "_core" + num + "[] = {");
 440             } else {
 441                 outtaskdefs.println("struct parameterwrapper * " + this.objqs4socketprefix + "_core" + num + "[] = {");
 442             }
 443             Vector tmpvector = qnames[i];
 444             comma = false;
 445             if(tmpvector != null) {
 446                 for(int j = 0; j < tmpvector.size(); ++j) {
 447                     if(comma) {
 448                         outtaskdefs.println(",");
 449                     } else {
 450                         comma = true;
 451                     }
 452                    outtaskdefs.print("&" + tmpvector.elementAt(j));
 453                 }
 454                 numqueues[i][num] = tmpvector.size();
 455             } else {
 456                 numqueues[i][num] = 0;
 457             }
 458             outtaskdefs.println();
 459             outtaskdefs.println("};");
 460         }*/
 461         for(int i = 0; i < qnames.length; ++i) {
 462             outtaskdefs.println("/* object queue array for class " + i + " on core " + num + "*/");
 463             outtaskdefs.println("struct parameterwrapper * " + this.objqarrayprefix + i + "_core" + num + "[] = {");
 464             //outtaskdefs.print("0");
 465             comma = false;
 466             Vector tmpvector = qnames[i];
 467             if(tmpvector != null) {
 468                 for(int j = 0; j < tmpvector.size(); ++j) {
 469                     if(comma) {
 470                         outtaskdefs.println(",");
 471                     } else {
 472                         comma = true;
 473                     }
 474                    outtaskdefs.print("&" + tmpvector.elementAt(j));
 475                 }
 476                 numqueues[num][i] = tmpvector.size();// + 1;
 477             } else {
 478                 numqueues[num][i] = 0;//1;
 479             }
 480             outtaskdefs.println("};");
 481         }
 482
 483         // record the iterator of tasks on this core
 484         taskit=this.currentSchedule.getTasks().iterator();
 485         taskits[num] = taskit;
 486         numtasks[num] = this.currentSchedule.getTasks().size();
 487     }
 488
 489     /** Prints out definitions for generic task structures */
 490     private void outputTaskTypes(PrintWriter outtask) {
 491         outtask.println("#ifndef _TASK_H");
 492         outtask.println("#define _TASK_H");
 493         outtask.println("#include \"ObjectHash.h\"");
 494         outtask.println("#include \"structdefs.h\"");
 495         outtask.println("#include \"Queue.h\"");
 496         outtask.println();
 497         outtask.println("struct tagobjectiterator {");
 498         outtask.println("  int istag; /* 0 if object iterator, 1 if tag iterator */");
 499         outtask.println("  struct ObjectIterator it; /* Object iterator */");
 500         outtask.println("  struct ObjectHash * objectset;");
 501         outtask.println("#ifdef OPTIONAL");
 502         outtask.println("  int failedstate;");
 503         outtask.println("#endif");
 504         outtask.println("  int slot;");
 505         outtask.println("  int tagobjindex; /* Index for tag or object depending on use */");
 506         outtask.println("  /*if tag we have an object binding */");
 507         outtask.println("  int tagid;");
 508         outtask.println("  int tagobjectslot;");
 509         outtask.println("  /*if object, we may have one or more tag bindings */");
 510         outtask.println("  int numtags;");
 511         outtask.println("  int tagbindings[MAXTASKPARAMS-1]; /* list slots */");
 512         outtask.println("};");
 513         outtask.println();
 514         outtask.println("struct parameterwrapper {");
 515         outtask.println("  //int type;");
 516         outtask.println("  struct ObjectHash * objectset;");
 517         outtask.println("  int numberofterms;");
 518         outtask.println("  int * intarray;");
 519         outtask.println("  int numbertags;");
 520         outtask.println("  int * tagarray;");
 521         outtask.println("  struct taskdescriptor * task;");
 522         outtask.println("  int slot;");
 523         outtask.println("  struct tagobjectiterator iterators[MAXTASKPARAMS-1];");
 524         outtask.println("};");
 525         outtask.println();
 526         /*
 527         outtask.println("extern struct parameterwrapper ** objq4startupobj[];");
 528         outtask.println("extern int numqueues4startupobj[];");
 529         outtask.println("extern struct parameterwrapper ** objq4socketobj[];");
 530         outtask.println("extern int numqueues4socketobj[];");
 531         */
 532         outtask.println("extern struct parameterwrapper ** objectqueues[][NUMCLASSES];");
 533         outtask.println("extern int numqueues[][NUMCLASSES];");
 534         outtask.println();
 535         outtask.println("struct parameterdescriptor {");
 536         outtask.println("  int type;");
 537         outtask.println("  int numberterms;");
 538         outtask.println("  int *intarray;");
 539         outtask.println("  struct parameterwrapper * queue;");
 540         outtask.println("  int numbertags;");
 541         outtask.println("  int *tagarray;");
 542         outtask.println("};");
 543         outtask.println();
 544         outtask.println("struct taskdescriptor {");
 545         outtask.println("  void * taskptr;");
 546         outtask.println("  int numParameters;");
 547         outtask.println("  int numTotal;");
 548         outtask.println("  struct parameterdescriptor **descriptorarray;");
 549         outtask.println("  char * name;");
 550         outtask.println("};");
 551         outtask.println();
 552         outtask.println("extern struct taskdescriptor ** taskarray[];");
 553         outtask.println("extern int numtasks[];");
 554         outtask.println("extern int corenum;");  // define corenum to identify different core
 555         outtask.println();
 556     }
 557
 558     private void generateObjectTransQueues(PrintWriter output) {
 559         if(this.fsate2qnames == null) {
 560             this.fsate2qnames = new Hashtable[this.coreNum];
 561             for(int i = 0; i < this.fsate2qnames.length; ++i) {
 562                 this.fsate2qnames[i] = null;
 563             }
 564         }
 565         int num = this.currentSchedule.getCoreNum();
 566         assert(this.fsate2qnames[num] == null);
 567         Hashtable<FlagState, String> flag2qname = new Hashtable<FlagState, String>();
 568         this.fsate2qnames[num] = flag2qname;
 569         Hashtable<FlagState, Queue<Integer>> targetCoreTbl = this.currentSchedule.getTargetCoreTable();
 570         if(targetCoreTbl != null) {
 571             Object[] keys = targetCoreTbl.keySet().toArray();
 572             output.println();
 573             output.println("/* Object transfer queues for core" + num + ".*/");
 574             for(int i = 0; i < keys.length; ++i) {
 575                 FlagState tmpfstate = (FlagState)keys[i];
 576                 Object[] targetcores = targetCoreTbl.get(tmpfstate).toArray();
 577                 String queuename = this.otqueueprefix + tmpfstate.getClassDescriptor().getCoreSafeSymbol(num) + tmpfstate.getuid() + "___";
 578                 String queueins = queuename + "ins";
 579                 flag2qname.put(tmpfstate, queuename);
 580                 output.println("struct " + queuename + " {");
 581                 output.println("  int * cores;");
 582                 output.println("  int index;");
 583                 output.println("  int length;");
 584                 output.println("};");
 585                 output.print("int " + queuename + "cores[] = {");
 586                 for(int j = 0; j < targetcores.length; ++j) {
 587                     if(j > 0) {
 588                         output.print(", ");
 589                     }
 590                     output.print(((Integer)targetcores[j]).intValue());
 591                 }
 592                 output.println("};");
 593                 output.println("struct " + queuename + " " + queueins + "= {");
 594                 output.println(/*".cores = " + */queuename + "cores,");
 595                 output.println(/*".index = " + */"0,");
 596                 output.println(/*".length = " +*/ targetcores.length + "};");
 597             }
 598         }
 599         output.println();
 600     }
 601
 602     private void generateTaskMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
 603         /*if (State.PRINTFLAT)
 604             System.out.println(fm.printMethod());*/
 605         TaskDescriptor task=fm.getTask();
 606         assert(task != null);
 607         int num = this.currentSchedule.getCoreNum();
 608
 609         //ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:task);
 610         generateTaskHeader(fm, lb, task,output);
 611         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:task);
 612         /*if (state.DSM&&lb.getHasAtomic()) {
 613             output.println("transrecord_t * trans;");
 614         }*/
 615
 616         if (GENERATEPRECISEGC) {
 617             output.print("   struct "+task.getCoreSafeSymbol(num)+"_locals "+localsprefix+"={");
 618
 619             output.print(objecttemp.numPointers()+",");
 620             output.print(paramsprefix);
 621             for(int j=0;j<objecttemp.numPointers();j++)
 622                 output.print(", NULL");
 623             output.println("};");
 624         }
 625
 626         for(int i=0;i<objecttemp.numPrimitives();i++) {
 627             TempDescriptor td=objecttemp.getPrimitive(i);
 628             TypeDescriptor type=td.getType();
 629             if (type.isNull())
 630                 //output.println("   void * "+td.getCoreSafeSymbol(num)+";");
 631                 output.println("   void * "+td.getSafeSymbol()+";");
 632             else if (type.isClass()||type.isArray())
 633                 //output.println("   struct "+type.getSafeSymbol()+" * "+td.getCoreSafeSymbol(num)+";");
 634                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
 635             else
 636                 //output.println("   "+type.getSafeSymbol()+" "+td.getCoreSafeSymbol(num)+";");
 637                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
 638         }
 639
 640         for(int i = 0; i < fm.numParameters(); ++i) {
 641             TempDescriptor temp = fm.getParameter(i);
 642             output.println("   int "+generateTempFlagName(fm, temp, lb)+" = "+super.generateTemp(fm, temp, lb)+
 643                "->flag;");
 644             output.println("   ++" + super.generateTemp(fm, temp, lb)+"->version;");
 645         }
 646
 647         /* Assign labels to FlatNode's if necessary.*/
 648
 649         Hashtable<FlatNode, Integer> nodetolabel=super.assignLabels(fm);
 650
 651         /* Check to see if we need to do a GC if this is a
 652          * multi-threaded program...*/
 653
 654         /*if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
 655             if (state.DSM&&lb.isAtomic())
 656                 output.println("checkcollect2(&"+localsprefix+",trans);");
 657             else
 658                 output.println("checkcollect(&"+localsprefix+");");
 659         }*/
 660
 661         /* Create queues to store objects need to be transferred to other cores and their destination*/
 662         output.println("   struct Queue * totransobjqueue = createQueue();");
 663         output.println("   struct Queue * desqueue = createQueue();");
 664         output.println("int tmpint = 0;");
 665
 666         /* Do the actual code generation */
 667         FlatNode current_node=null;
 668         HashSet tovisit=new HashSet();
 669         HashSet visited=new HashSet();
 670         tovisit.add(fm.getNext(0));
 671         while(current_node!=null||!tovisit.isEmpty()) {
 672             if (current_node==null) {
 673                 current_node=(FlatNode)tovisit.iterator().next();
 674                 tovisit.remove(current_node);
 675             }
 676             visited.add(current_node);
 677             if (nodetolabel.containsKey(current_node))
 678                 output.println("L"+nodetolabel.get(current_node)+":");
 679             /*if (state.INSTRUCTIONFAILURE) {
 680                 if (state.THREAD||state.DSM) {
 681                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
 682                 }
 683                 else
 684                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
 685             }*/
 686             if (current_node.numNext()==0) {
 687                 output.print("   ");
 688                 super.generateFlatNode(fm, lb, current_node, output);
 689                 if (current_node.kind()!=FKind.FlatReturnNode) {
 690                     outputTransCode(output);
 691                     output.println("   return;");
 692                 }
 693                 current_node=null;
 694             } else if(current_node.numNext()==1) {
 695                 output.print("   ");
 696                 super.generateFlatNode(fm, lb, current_node, output);
 697                 FlatNode nextnode=current_node.getNext(0);
 698                 if (visited.contains(nextnode)) {
 699                     output.println("goto L"+nodetolabel.get(nextnode)+";");
 700                     current_node=null;
 701                 } else
 702                     current_node=nextnode;
 703             } else if (current_node.numNext()==2) {
 704                 /* Branch */
 705                 output.print("   ");
 706                 super.generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
 707                 if (!visited.contains(current_node.getNext(1)))
 708                     tovisit.add(current_node.getNext(1));
 709                 if (visited.contains(current_node.getNext(0))) {
 710                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
 711                     current_node=null;
 712                 } else
 713                     current_node=current_node.getNext(0);
 714             } else throw new Error();
 715         }
 716
 717         output.println("}\n\n");
 718     }
 719
 720     /** This method outputs TaskDescriptor information */
 721     private void generateTaskDescriptor(PrintWriter output, PrintWriter outtask, FlatMethod fm, TaskDescriptor task, Vector[] qnames) {
 722         int num = this.currentSchedule.getCoreNum();
 723
 724         output.println("/* TaskDescriptor information for task " + task.getSymbol() + " on core " + num + "*/");
 725
 726         for (int i=0;i<task.numParameters();i++) {
 727             VarDescriptor param_var=task.getParameter(i);
 728             TypeDescriptor param_type=task.getParamType(i);
 729             FlagExpressionNode param_flag=task.getFlag(param_var);
 730             TagExpressionList param_tag=task.getTag(param_var);
 731
 732             int dnfterms;
 733             if (param_flag==null) {
 734                 output.println("int parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+"[]={");
 735                 output.println("0x0, 0x0 };");
 736                 dnfterms=1;
 737             } else {
 738                 DNFFlag dflag=param_flag.getDNF();
 739                 dnfterms=dflag.size();
 740
 741                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 742                 output.println("int parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+"[]={");
 743                 for(int j=0;j<dflag.size();j++) {
 744                     if (j!=0)
 745                         output.println(",");
 746                     Vector term=dflag.get(j);
 747                     int andmask=0;
 748                     int checkmask=0;
 749                     for(int k=0;k<term.size();k++) {
 750                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 751                         FlagDescriptor fd=dfa.getFlag();
 752                         boolean negated=dfa.getNegated();
 753                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 754                         andmask|=flagid;
 755                         if (!negated)
 756                             checkmask|=flagid;
 757                     }
 758                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 759                 }
 760                 output.println("};");
 761             }
 762
 763             output.println("int parametertag_"+i+"_"+task.getCoreSafeSymbol(num)+"[]={");
 764             //BUG...added next line to fix, test with any task program
 765             if (param_tag!=null)
 766                 for(int j=0;j<param_tag.numTags();j++) {
 767                     if (j!=0)
 768                         output.println(",");
 769                     /* for each tag we need */
 770                     /* which slot it is */
 771                     /* what type it is */
 772                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 773                     TempDescriptor tmp=param_tag.getTemp(j);
 774                     int slot=fm.getTagInt(tmp);
 775                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 776                 }
 777             output.println("};");
 778
 779             // generate object queue for this parameter
 780             String qname = this.objqueueprefix+i+"_"+task.getCoreSafeSymbol(num);
 781             if(param_type.getClassDesc().getSymbol().equals("StartupObject")) {
 782                 this.startupcorenum = num;
 783             }
 784             /*if(param_type.getClassDesc().getSymbol().equals("StartupObject")) {
 785                 if(qnames[0] == null) {
 786                     qnames[0] = new Vector();
 787                 }
 788                 qnames[0].addElement(qname);
 789             } else if(param_type.getClassDesc().getSymbol().equals("Socket")) {
 790                 if(qnames[1] == null) {
 791                     qnames[1] = new Vector();
 792                 }
 793                 qnames[1].addElement(qname);
 794             }*/
 795             if(qnames[param_type.getClassDesc().getId()] == null) {
 796                 qnames[param_type.getClassDesc().getId()] = new Vector();
 797             }
 798             qnames[param_type.getClassDesc().getId()].addElement(qname);
 799             outtask.println("extern struct parameterwrapper " + qname + ";");
 800             output.println("struct parameterwrapper " + qname + "={");
 801             //output.println(".type = " + param_type.getClassDesc().getId() + ","); // type
 802             output.println(".objectset = 0,"); // objectset
 803             output.println("/* number of DNF terms */ .numberofterms = "+dnfterms+","); // numberofterms
 804             output.println(".intarray = parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+","); // intarray
 805             // numbertags
 806             if (param_tag!=null)
 807                 output.println("/* number of tags */ .numbertags = "+param_tag.numTags()+",");
 808             else
 809                 output.println("/* number of tags */ .numbertags = 0,");
 810             output.println(".tagarray = parametertag_"+i+"_"+task.getCoreSafeSymbol(num)+","); // tagarray
 811             output.println(".task = 0,"); // task
 812             output.println(".slot = " + i + ",");// slot
 813             // iterators
 814             output.println("};");
 815
 816             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getCoreSafeSymbol(num)+"={");
 817             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 818             output.println("/* number of DNF terms */"+dnfterms+",");
 819             output.println("parameterdnf_"+i+"_"+task.getCoreSafeSymbol(num)+","); // intarray
 820             output.println("&" + qname + ","); // queue
 821             //BUG, added next line to fix and else statement...test
 822             //with any task program
 823             if (param_tag!=null)
 824                 output.println("/* number of tags */"+param_tag.numTags()+",");
 825             else
 826                 output.println("/* number of tags */ 0,");
 827             output.println("parametertag_"+i+"_"+task.getCoreSafeSymbol(num)); // tagarray
 828             output.println("};");
 829         }
 830
 831
 832         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getCoreSafeSymbol(num)+"[] = {");
 833         for (int i=0;i<task.numParameters();i++) {
 834             if (i!=0)
 835                 output.println(",");
 836             output.print("&parameter_"+i+"_"+task.getCoreSafeSymbol(num));
 837         }
 838         output.println("};");
 839
 840         output.println("struct taskdescriptor " + this.taskprefix + task.getCoreSafeSymbol(num) + "={");
 841         output.println("&"+task.getCoreSafeSymbol(num)+",");
 842         output.println("/* number of parameters */" +task.numParameters() + ",");
 843         int numtotal=task.numParameters()+fm.numTags();
 844         output.println("/* number total parameters */" +numtotal + ",");
 845         output.println("parameterdescriptors_"+task.getCoreSafeSymbol(num)+",");
 846         output.println("\""+task.getSymbol()+"\"");
 847         output.println("};");
 848
 849         output.println();
 850     }
 851
 852     /** This method generates header information for the task
 853      *  referenced by the Descriptor des. */
 854
 855     private void generateTaskHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
 856         /* Print header */
 857         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
 858         TaskDescriptor task=(TaskDescriptor) des;
 859
 860         int num = this.currentSchedule.getCoreNum();
 861         //catch the constructor case
 862         output.print("void ");
 863         output.print(task.getCoreSafeSymbol(num)+"(");
 864
 865         boolean printcomma=false;
 866         if (GENERATEPRECISEGC) {
 867             output.print("struct "+task.getCoreSafeSymbol(num)+"_params * "+paramsprefix);
 868             printcomma=true;
 869         }
 870
 871         /*if (state.DSM&&lb.isAtomic()) {
 872             if (printcomma)
 873                 output.print(", ");
 874             output.print("transrecord_t * trans");
 875             printcomma=true;
 876         }*/
 877
 878         if (!GENERATEPRECISEGC) {
 879             /* Imprecise Task */
 880             output.println("void * parameterarray[]) {");
 881             /* Unpack variables */
 882             for(int i=0;i<objectparams.numPrimitives();i++) {
 883                 TempDescriptor temp=objectparams.getPrimitive(i);
 884                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
 885             }
 886             for(int i=0;i<fm.numTags();i++) {
 887                 TempDescriptor temp=fm.getTag(i);
 888                 int offset=i+objectparams.numPrimitives();
 889                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+i+"___=parameterarray["+offset+"];");// add i to fix bugs of duplicate definition of tags
 890             }
 891
 892             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
 893                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
 894         } else output.println(") {");
 895     }
 896
 897     protected void generateFlagOrAnd(FlatFlagActionNode ffan, FlatMethod fm, LocalityBinding lb, TempDescriptor temp,
 898             PrintWriter output, int ormask, int andmask) {
 899         if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
 900             output.println("flagorandinit("+super.generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
 901         } else {
 902             int num = this.currentSchedule.getCoreNum();
 903             ClassDescriptor cd = temp.getType().getClassDesc();
 904             Vector<FlagState> initfstates = ffan.getInitFStates(cd);
 905             for(int i = 0; i < initfstates.size(); ++i) {
 906                 FlagState tmpFState = initfstates.elementAt(i);
 907
 908                 QueueInfo qinfo = outputqueues(tmpFState, num, output, false);
 909                 output.println("flagorand("+super.generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+
 910                                ", 0x"+Integer.toHexString(andmask)+", " + qinfo.qname +
 911                                ", " + qinfo.length + ");");
 912             }
 913             //output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
 914         }
 915     }
 916
 917     protected void generateObjectDistribute(FlatFlagActionNode ffan, FlatMethod fm, LocalityBinding lb, TempDescriptor temp,
 918                                             PrintWriter output) {
 919         ClassDescriptor cd = temp.getType().getClassDesc();
 920         Vector<FlagState> initfstates = null;
 921         Vector[] targetFStates = null;
 922         if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
 923             targetFStates = new Vector[1];
 924             targetFStates[0] = ffan.getTargetFStates4NewObj(cd);
 925         } else {
 926             initfstates = ffan.getInitFStates(cd);
 927             targetFStates = new Vector[initfstates.size()];
 928             for(int i = 0; i < initfstates.size(); ++i) {
 929                 FlagState fs = initfstates.elementAt(i);
 930                 targetFStates[i] = ffan.getTargetFStates(fs);
 931
 932                 if(!fs.isSetmask()) {
 933                     Hashtable flags=(Hashtable)flagorder.get(cd);
 934                     int andmask=0;
 935                     int checkmask=0;
 936                     Iterator it_flags = fs.getFlags();
 937                     while(it_flags.hasNext()) {
 938                         FlagDescriptor fd = (FlagDescriptor)it_flags.next();
 939                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 940                         andmask|=flagid;
 941                         checkmask|=flagid;
 942                     }
 943                     fs.setAndmask(andmask);
 944                     fs.setCheckmask(checkmask);
 945                     fs.setSetmask(true);
 946                 }
 947             }
 948         }
 949         boolean isolate = true; // check if this flagstate can associate to some task with multiple params which can
 950                                 // reside on multiple cores
 951         if((this.currentSchedule == null) && (fm.getMethod().getClassDesc().getSymbol().equals("ServerSocket"))) {
 952             // ServerSocket object will always reside on current core
 953             for(int j = 0; j < targetFStates.length; ++j) {
 954                 if(initfstates != null) {
 955                     FlagState fs = initfstates.elementAt(j);
 956                     //isolate = this.currentSchedule.getAllyCoreTable().keySet().contains(fs);
 957                     output.println("if(" + generateTempFlagName(fm, temp, lb) + "&(0x" + Integer.toHexString(fs.getAndmask())
 958                             + ")==(0x" + Integer.toHexString(fs.getCheckmask()) + ")) {");
 959                 }
 960                 Vector<FlagState> tmpfstates = (Vector<FlagState>)targetFStates[j];
 961                 for(int i = 0; i < tmpfstates.size(); ++i) {
 962                     FlagState tmpFState = tmpfstates.elementAt(i);
 963                     // TODO
 964                     // may have bugs here
 965                     output.println("/* reside on this core*");
 966                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
 967                     //output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", objq4socketobj[corenum], numqueues4socketobj[corenum]);");
 968                     //output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+");");
 969                 }
 970                 if(initfstates != null) {
 971                     output.println("}");
 972                 }
 973             }
 974             //output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+");");
 975             return;
 976         }
 977
 978         int num = this.currentSchedule.getCoreNum();
 979         Hashtable<FlagState, Queue<Integer>> targetCoreTbl = this.currentSchedule.getTargetCoreTable();
 980         for(int j = 0; j < targetFStates.length; ++j) {
 981             FlagState fs = null;
 982             if(initfstates != null) {
 983                 fs = initfstates.elementAt(j);
 984                 output.println("if((" + generateTempFlagName(fm, temp, lb) + "&(0x" + Integer.toHexString(fs.getAndmask())
 985                         + "))==(0x" + Integer.toHexString(fs.getCheckmask()) + ")) {");
 986             }
 987             Vector<FlagState> tmpfstates = (Vector<FlagState>)targetFStates[j];
 988             for(int i = 0; i < tmpfstates.size(); ++i) {
 989                 FlagState tmpFState = tmpfstates.elementAt(i);
 990
 991                 if(this.currentSchedule.getAllyCoreTable() == null) {
 992                     isolate = true;
 993                 } else {
 994                     isolate = (this.currentSchedule.getAllyCoreTable().get(tmpFState) == null) ||
 995                                 (this.currentSchedule.getAllyCoreTable().get(tmpFState).size() == 0);
 996                 }
 997                 /*if(isolate) {
 998                     output.println(super.generateTemp(fm, temp, lb) + "->isolate = 1;"); // not shared object
 999                 } else {*/
1000                 if(!isolate) {
1001                     // indentify this object as a shared object
1002                     // 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
1003                     // is shared, it maybe shared all the time afterwards
1004                     output.println(super.generateTemp(fm, temp, lb) + "->isolate = 0;");
1005                     output.println(super.generateTemp(fm, temp, lb) + "->original = (struct ___Object___ *)" + super.generateTemp(fm, temp, lb) + ";");
1006                 }
1007
1008                 Vector<Integer> sendto = new Vector<Integer>();
1009                 Queue<Integer> queue = null;
1010                 if(targetCoreTbl != null) {
1011                     queue = targetCoreTbl.get(tmpFState);
1012                 }
1013                 if((queue != null) &&
1014                         ((queue.size() != 1) ||
1015                                 ((queue.size() == 1) && (queue.element().intValue() != num)))) {
1016                     // this object may be transferred to other cores
1017                     String queuename = (String)this.fsate2qnames[num].get(tmpFState);
1018                     String queueins = queuename + "ins";
1019
1020                     Object[] cores = queue.toArray();
1021                     String index = "0";
1022                     Integer targetcore = (Integer)cores[0];
1023                     if(queue.size() > 1) {
1024                         index = queueins + ".index";
1025                     }
1026                     if(queue.size() > 1) {
1027                         output.println("switch(" + queueins + ".index % " + queueins + ".length) {");
1028                         for(int k = 0; k < cores.length; ++k) {
1029                             output.println("case " + k + ":");
1030                             targetcore = (Integer)cores[k];
1031                             if(targetcore.intValue() == num) {
1032                                 output.println("/* reside on this core*/");
1033                                 if(isolate) {
1034                                     QueueInfo qinfo = outputqueues(tmpFState, num, output, true);
1035                                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", " + qinfo.qname +
1036                                             ", " + qinfo.length + ");");
1037                                 } else {
1038                                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
1039                                 }
1040
1041                                 //output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+");");
1042                             } else {
1043                                 if(!isolate) {
1044                                     output.println("/* possibly needed by multi-parameter tasks on this core*/");
1045                                     output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
1046                                 }
1047                                 output.println("/* transfer to core " + targetcore.toString() + "*/");
1048                                 // method call of transfer objects
1049                                 //output.println("transferObject("+super.generateTemp(fm, temp, lb)+", " + targetcore.toString() + ");");
1050                                 // enqueue this object and its destination
1051                                 output.println(";");
1052                                 output.println("tmpint = "+targetcore.toString()+";");
1053                                 output.println("addNewItem(totransobjqueue, (void*)" +super.generateTemp(fm, temp, lb) + ");");
1054                                 output.println("addNewItem(desqueue, (void *)tmpint);");
1055                                 sendto.add(targetcore);
1056                                 //output.println("transferObject("+super.generateTemp(fm, temp, lb)+", " + targetcore.toString() +
1057                                 //             ", \"" + targetcore.toString() + "\"" + ");");
1058                             }
1059                             output.println("break;");
1060                         }
1061                         output.println("}");
1062                     } else {
1063                         if(!isolate) {
1064                             output.println("/* possibly needed by multi-parameter tasks on this core*/");
1065                             output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
1066                         }
1067                         output.println("/* transfer to core " + targetcore.toString() + "*/");
1068                         // method call of transfer objectts
1069                         //output.println("transferObject("+super.generateTemp(fm, temp, lb)+", " + targetcore.toString() + ");");
1070                         // enqueue this object and its destination
1071                         output.println(";");
1072                         output.println("tmpint = "+targetcore.toString()+";");
1073                         output.println("addNewItem(totransobjqueue, (void*)" +super.generateTemp(fm, temp, lb) + ");");
1074                         output.println("addNewItem(desqueue, (void *)tmpint);");
1075                         sendto.add(targetcore);
1076                         //output.println("transferObject("+super.generateTemp(fm, temp, lb)+", " + targetcore.toString() +
1077                         //             ", \"" + targetcore.toString() + "\"" + ");");
1078                     }
1079                     output.println("/* increase index*/");
1080                     output.println("++" + queueins + ".index;");
1081                 } else {
1082                     // this object will reside on current core
1083                     output.println("/* reside on this core*/");
1084                     if(isolate) {
1085                         QueueInfo qinfo = outputqueues(tmpFState, num, output, true);
1086                         output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", " + qinfo.qname +
1087                                 ", " + qinfo.length + ");");
1088                     } else {
1089                         output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+", NULL, 0);");
1090                     }
1091
1092                     //output.println("enqueueObject("+super.generateTemp(fm, temp, lb)+");");
1093                 }
1094
1095                 // codes for multi-params tasks
1096                 if(!isolate) {
1097                     // flagstate associated with some multi-params tasks
1098                     // need to be send to other cores
1099                     Vector<Integer> targetcores = this.currentSchedule.getAllyCores(tmpFState);
1100                     output.println("/* send the shared object to possible queues on other cores*/");
1101                     for(int k = 0; k < targetcores.size(); ++k) {
1102                         //QueueInfo qinfo = outputqueues(tmpFState, num, output);
1103                         // TODO
1104                         // add the information of exactly which queue
1105                         if(!sendto.contains(targetcores.elementAt(i))) {
1106                             // previously not sended to this target core
1107                             //output.println("transferObject("+super.generateTemp(fm, temp, lb)+", " + targetcores.elementAt(i).toString() + ");");
1108                             // enqueue this object and its destination
1109                             output.println(";");
1110                             output.println("tmpint = "+targetcores.elementAt(i).toString()+";");
1111                             output.println("addNewItem(totransobjqueue, (void*)" +super.generateTemp(fm, temp, lb) + ");");
1112                             output.println("addNewItem(desqueue, (void *)tmpint);");
1113                         }
1114                     }
1115                 }
1116             }
1117
1118             if(initfstates != null) {
1119                 output.println("}");
1120             }
1121         }
1122     }
1123
1124     private QueueInfo outputqueues(FlagState tmpFState, int num, PrintWriter output, boolean isEnqueue) {
1125         // queue array
1126         QueueInfo qinfo = new QueueInfo();
1127         output.println(";");
1128         qinfo.qname  = "queues_" + tmpFState.getLabel() + "_" + tmpFState.getiuid();
1129         output.println("struct parameterwrapper * " + qinfo.qname + "[] = {");
1130         Iterator it_edges = tmpFState.getEdgeVector().iterator();
1131         Vector<TaskDescriptor> residetasks = this.currentSchedule.getTasks();
1132         Vector<TaskDescriptor> tasks = new Vector<TaskDescriptor>();
1133         Vector<Integer> indexes = new Vector<Integer>();
1134         boolean comma = false;
1135         qinfo.length = 0;
1136         while(it_edges.hasNext()) {
1137             FEdge fe = (FEdge)it_edges.next();
1138             TaskDescriptor td = fe.getTask();
1139             int paraindex = fe.getIndex();
1140             if((!isEnqueue) || (isEnqueue && residetasks.contains(td))) {
1141                 if((!tasks.contains(td)) ||
1142                         ((tasks.contains(td)) && (paraindex != indexes.elementAt(tasks.indexOf(td)).intValue()))) {
1143                     tasks.addElement(td);
1144                     indexes.addElement(paraindex);
1145                     if(comma) {
1146                         output.println(",");
1147                     } else {
1148                         comma = true;
1149                     }
1150                     output.print("&" + this.objqueueprefix + paraindex + "_" + td.getCoreSafeSymbol(num));
1151                     ++qinfo.length;
1152                 }
1153             }
1154         }
1155         output.println("};");
1156         return qinfo;
1157     }
1158
1159     private class QueueInfo {
1160         public int length;
1161         public String qname;
1162     }
1163
1164     private String generateTempFlagName(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1165         MethodDescriptor md=fm.getMethod();
1166         TaskDescriptor task=fm.getTask();
1167         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1168
1169         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1170             return td.getSafeSymbol() + "_oldflag";
1171         }
1172
1173         if (objecttemps.isLocalPtr(td)) {
1174             return localsprefix+"_"+td.getSafeSymbol() + "_oldflag";
1175         }
1176
1177         if (objecttemps.isParamPtr(td)) {
1178             return paramsprefix+"_"+td.getSafeSymbol() + "_oldflag";
1179         }
1180         throw new Error();
1181     }
1182
1183     protected void outputTransCode(PrintWriter output) {
1184         output.println("while(0 == isEmpty(totransobjqueue)) {");
1185         output.println("   struct QueueItem * totransitem = getTail(totransobjqueue);");
1186         output.println("   struct QueueItem * desitem = getTail(desqueue);");
1187         output.println("   transferObject(totransitem->objectptr, (int)desitem->objectptr);");
1188         output.println("   removeItem(totransobjqueue, totransitem);");
1189         output.println("   removeItem(desqueue, desitem);");
1190         output.println("}");
1191         output.println("freeQueue(totransobjqueue);");
1192         output.println("freeQueue(desqueue);");
1193     }
1194
1195     protected void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
1196         if (frn.getReturnTemp()!=null) {
1197             if (frn.getReturnTemp().getType().isPtr())
1198                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
1199             else
1200                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
1201         } else {
1202             if(fm.getTask() != null) {
1203                 outputTransCode(output);
1204             }
1205             output.println("return;");
1206         }
1207     }
1208 }