Robust/src/IR/Flat/BuildCode.java

   1 package IR.Flat;
   2 import IR.Tree.FlagExpressionNode;
   3 import IR.Tree.DNFFlag;
   4 import IR.Tree.DNFFlagAtom;
   5 import IR.Tree.TagExpressionList;
   6 import IR.*;
   7 import java.util.*;
   8 import java.io.*;
   9 import Util.Relation;
  10 import Analysis.TaskStateAnalysis.FlagState;
  11 import Analysis.TaskStateAnalysis.FlagComparator;
  12 import Analysis.TaskStateAnalysis.OptionalTaskDescriptor;
  13 import Analysis.TaskStateAnalysis.Predicate;
  14 import Analysis.TaskStateAnalysis.SafetyAnalysis;
  15 import Analysis.TaskStateAnalysis.TaskIndex;
  16 import Analysis.Locality.LocalityAnalysis;
  17 import Analysis.Locality.LocalityBinding;
  18 import Analysis.Prefetch.*;
  19
  20 public class BuildCode {
  21     State state;
  22     Hashtable temptovar;
  23     Hashtable paramstable;
  24     Hashtable tempstable;
  25     Hashtable fieldorder;
  26     Hashtable flagorder;
  27     int tag=0;
  28     String localsprefix="___locals___";
  29     String paramsprefix="___params___";
  30     String oidstr="___nextobject___";
  31     String nextobjstr="___nextobject___";
  32     String localcopystr="___localcopy___";
  33     public static boolean GENERATEPRECISEGC=false;
  34     public static String PREFIX="";
  35     public static String arraytype="ArrayObject";
  36     public static int count = 0;
  37     Virtual virtualcalls;
  38     TypeUtil typeutil;
  39     private int maxtaskparams=0;
  40     private int maxcount=0;
  41     ClassDescriptor[] cdarray;
  42     TypeDescriptor[] arraytable;
  43     LocalityAnalysis locality;
  44     Hashtable<TempDescriptor, TempDescriptor> backuptable;
  45     Hashtable<LocalityBinding, TempDescriptor> reverttable;
  46     SafetyAnalysis sa;
  47
  48     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, SafetyAnalysis sa) {
  49         this(st, temptovar, typeutil, null, sa);
  50     }
  51
  52     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, LocalityAnalysis locality) {
  53         this(st, temptovar, typeutil, locality, null);
  54     }
  55
  56     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, LocalityAnalysis locality, SafetyAnalysis sa) {
  57         this.sa=sa;
  58         state=st;
  59         this.temptovar=temptovar;
  60         paramstable=new Hashtable();
  61         tempstable=new Hashtable();
  62         fieldorder=new Hashtable();
  63         flagorder=new Hashtable();
  64         this.typeutil=typeutil;
  65         virtualcalls=new Virtual(state,locality);
  66         if (locality!=null) {
  67             this.locality=locality;
  68             this.backuptable=new Hashtable<TempDescriptor, TempDescriptor>();
  69             this.reverttable=new Hashtable<LocalityBinding, TempDescriptor>();
  70         }
  71     }
  72
  73     /** The buildCode method outputs C code for all the methods.  The Flat
  74      * versions of the methods must already be generated and stored in
  75      * the State object. */
  76
  77     public void buildCode() {
  78         /* Create output streams to write to */
  79         PrintWriter outclassdefs=null;
  80         PrintWriter outstructs=null;
  81         PrintWriter outrepairstructs=null;
  82         PrintWriter outmethodheader=null;
  83         PrintWriter outmethod=null;
  84         PrintWriter outvirtual=null;
  85         PrintWriter outtask=null;
  86         PrintWriter outtaskdefs=null;
  87         PrintWriter outoptionalarrays=null;
  88         PrintWriter optionalheaders=null;
  89
  90         try {
  91             outstructs=new PrintWriter(new FileOutputStream(PREFIX+"structdefs.h"), true);
  92             outmethodheader=new PrintWriter(new FileOutputStream(PREFIX+"methodheaders.h"), true);
  93             outclassdefs=new PrintWriter(new FileOutputStream(PREFIX+"classdefs.h"), true);
  94             outmethod=new PrintWriter(new FileOutputStream(PREFIX+"methods.c"), true);
  95             outvirtual=new PrintWriter(new FileOutputStream(PREFIX+"virtualtable.h"), true);
  96             if (state.TASK) {
  97                 outtask=new PrintWriter(new FileOutputStream(PREFIX+"task.h"), true);
  98                 outtaskdefs=new PrintWriter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
  99                 if (state.OPTIONAL){
 100                     outoptionalarrays=new PrintWriter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
 101                     optionalheaders=new PrintWriter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
 102                 }
 103             }
 104             if (state.structfile!=null) {
 105                 outrepairstructs=new PrintWriter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
 106             }
 107         } catch (Exception e) {
 108             e.printStackTrace();
 109             System.exit(-1);
 110         }
 111
 112         /* Build the virtual dispatch tables */
 113         buildVirtualTables(outvirtual);
 114
 115         /* Output includes */
 116         outmethodheader.println("#ifndef METHODHEADERS_H");
 117         outmethodheader.println("#define METHODHEADERS_H");
 118         outmethodheader.println("#include \"structdefs.h\"");
 119         if (state.DSM)
 120             outmethodheader.println("#include \"dstm.h\"");
 121
 122         /* Output Structures */
 123         outputStructs(outstructs);
 124
 125         // Output the C class declarations
 126         // These could mutually reference each other
 127         outputClassDeclarations(outclassdefs);
 128
 129         // Output function prototypes and structures for parameters
 130         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 131         while(it.hasNext()) {
 132             ClassDescriptor cn=(ClassDescriptor)it.next();
 133             generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
 134         }
 135         outclassdefs.close();
 136
 137         if (state.TASK) {
 138             /* Map flags to integers */
 139             /* The runtime keeps track of flags using these integers */
 140             it=state.getClassSymbolTable().getDescriptorsIterator();
 141             while(it.hasNext()) {
 142                 ClassDescriptor cn=(ClassDescriptor)it.next();
 143                 mapFlags(cn);
 144             }
 145             /* Generate Tasks */
 146             generateTaskStructs(outstructs, outmethodheader);
 147
 148             /* Outputs generic task structures if this is a task
 149                program */
 150             outputTaskTypes(outtask);
 151         }
 152
 153         /* Build the actual methods */
 154         outputMethods(outmethod);
 155
 156         if (state.TASK) {
 157             /* Output code for tasks */
 158             outputTaskCode(outtaskdefs, outmethod);
 159             outtaskdefs.close();
 160             /* Record maximum number of task parameters */
 161             outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
 162         } else if (state.main!=null) {
 163             /* Generate main method */
 164             outputMainMethod(outmethod);
 165         }
 166
 167         /* Generate information for task with optional parameters */
 168         if (state.TASK&&state.OPTIONAL){
 169             generateOptionalArrays(outoptionalarrays, optionalheaders, state.getAnalysisResult(), state.getOptionalTaskDescriptors());
 170             outoptionalarrays.close();
 171         }
 172
 173         /* Output structure definitions for repair tool */
 174         if (state.structfile!=null) {
 175             buildRepairStructs(outrepairstructs);
 176             outrepairstructs.close();
 177         }
 178
 179         /* Close files */
 180         outmethodheader.println("#endif");
 181         outmethodheader.close();
 182         outmethod.close();
 183         outstructs.println("#endif");
 184         outstructs.close();
 185     }
 186
 187     /* This code just generates the main C method for java programs.
 188      * The main C method packs up the arguments into a string array
 189      * and passes it to the java main method. */
 190
 191     private void outputMainMethod(PrintWriter outmethod) {
 192         outmethod.println("int main(int argc, const char *argv[]) {");
 193         outmethod.println("  int i;");
 194         if (state.DSM) {
 195             outmethod.println("if (dstmStartup(argv[1])) {");
 196             if (GENERATEPRECISEGC) {
 197                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-2);");
 198             } else {
 199                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-2);");
 200             }
 201         } else {
 202             if (GENERATEPRECISEGC) {
 203                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
 204             } else {
 205                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
 206             }
 207         }
 208         if (state.THREAD) {
 209             outmethod.println("initializethreads();");
 210         }
 211         if (state.DSM) {
 212             outmethod.println("  for(i=2;i<argc;i++) {");
 213         } else
 214             outmethod.println("  for(i=1;i<argc;i++) {");
 215         outmethod.println("    int length=strlen(argv[i]);");
 216         if (GENERATEPRECISEGC) {
 217             outmethod.println("    struct ___String___ *newstring=NewString(NULL, argv[i], length);");
 218         } else {
 219             outmethod.println("    struct ___String___ *newstring=NewString(argv[i], length);");
 220         }
 221         if (state.DSM)
 222             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-2]=newstring;");
 223         else
 224             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-1]=newstring;");
 225         outmethod.println("  }");
 226
 227
 228         MethodDescriptor md=typeutil.getMain();
 229         ClassDescriptor cd=typeutil.getMainClass();
 230
 231         outmethod.println("   {");
 232         if (GENERATEPRECISEGC) {
 233             if (state.DSM) {
 234                 outmethod.print("       struct "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 235             } else
 236                 outmethod.print("       struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 237             outmethod.println("1, NULL,"+"stringarray};");
 238             if (state.DSM)
 239                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 240             else
 241                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 242         } else {
 243             if (state.DSM)
 244                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 245             else
 246                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 247         }
 248         outmethod.println("   }");
 249
 250         if (state.DSM) {
 251             outmethod.println("}");
 252         }
 253
 254         if (state.THREAD) {
 255             outmethod.println("pthread_mutex_lock(&gclistlock);");
 256             outmethod.println("threadcount--;");
 257             outmethod.println("pthread_cond_signal(&gccond);");
 258             outmethod.println("pthread_mutex_unlock(&gclistlock);");
 259             outmethod.println("pthread_exit(NULL);");
 260         }
 261
 262
 263         outmethod.println("}");
 264     }
 265
 266     /* This method outputs code for each task. */
 267
 268     private void outputTaskCode(PrintWriter outtaskdefs, PrintWriter outmethod) {
 269         /* Compile task based program */
 270         outtaskdefs.println("#include \"task.h\"");
 271         outtaskdefs.println("#include \"methodheaders.h\"");
 272         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 273         while(taskit.hasNext()) {
 274             TaskDescriptor td=(TaskDescriptor)taskit.next();
 275             FlatMethod fm=state.getMethodFlat(td);
 276             generateFlatMethod(fm, null, outmethod);
 277             generateTaskDescriptor(outtaskdefs, fm, td);
 278         }
 279
 280         //Output task descriptors
 281         taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 282         outtaskdefs.println("struct taskdescriptor * taskarray[]= {");
 283         boolean first=true;
 284         while(taskit.hasNext()) {
 285             TaskDescriptor td=(TaskDescriptor)taskit.next();
 286             if (first)
 287                 first=false;
 288             else
 289                 outtaskdefs.println(",");
 290             outtaskdefs.print("&task_"+td.getSafeSymbol());
 291         }
 292         outtaskdefs.println("};");
 293
 294         outtaskdefs.println("int numtasks="+state.getTaskSymbolTable().getValueSet().size()+";");
 295     }
 296
 297     /* This method outputs most of the methods.c file.  This includes
 298      * some standard includes and then an array with the sizes of
 299      * objets and array that stores supertype and then the code for
 300      * the Java methods.. */
 301
 302     private void outputMethods(PrintWriter outmethod) {
 303         outmethod.println("#include \"methodheaders.h\"");
 304         outmethod.println("#include \"virtualtable.h\"");
 305         outmethod.println("#include <runtime.h>");
 306         if (state.DSM) {
 307             outmethod.println("#include \"localobjects.h\"");
 308         }
 309         if (state.THREAD)
 310             outmethod.println("#include <thread.h>");
 311         if (state.main!=null) {
 312             outmethod.println("#include <string.h>");
 313         }
 314         if (state.CONSCHECK) {
 315             outmethod.println("#include \"checkers.h\"");
 316         }
 317         //Store the sizes of classes & array elements
 318         generateSizeArray(outmethod);
 319
 320         //Store table of supertypes
 321         generateSuperTypeTable(outmethod);
 322
 323         //Store the layout of classes
 324         generateLayoutStructs(outmethod);
 325
 326         /* Generate code for methods */
 327         if (state.DSM) {
 328             for(Iterator<LocalityBinding> lbit=locality.getLocalityBindings().iterator();lbit.hasNext();) {
 329                 LocalityBinding lb=lbit.next();
 330                 MethodDescriptor md=lb.getMethod();
 331                 FlatMethod fm=state.getMethodFlat(md);
 332                 if (!md.getModifiers().isNative()) {
 333                         generateFlatMethod(fm, lb, outmethod);
 334                 }
 335             }
 336         } else {
 337             Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 338             while(classit.hasNext()) {
 339                 ClassDescriptor cn=(ClassDescriptor)classit.next();
 340                 Iterator methodit=cn.getMethods();
 341                 while(methodit.hasNext()) {
 342                     /* Classify parameters */
 343                     MethodDescriptor md=(MethodDescriptor)methodit.next();
 344                     FlatMethod fm=state.getMethodFlat(md);
 345                     if (!md.getModifiers().isNative()) {
 346                         generateFlatMethod(fm, null, outmethod);
 347                     }
 348                 }
 349             }
 350         }
 351     }
 352
 353     private void outputStructs(PrintWriter outstructs) {
 354         outstructs.println("#ifndef STRUCTDEFS_H");
 355         outstructs.println("#define STRUCTDEFS_H");
 356         outstructs.println("#include \"classdefs.h\"");
 357
 358         /* Output #defines that the runtime uses to determine type
 359          * numbers for various objects it needs */
 360         outstructs.println("#define MAXCOUNT "+maxcount);
 361         if (state.DSM) {
 362             LocalityBinding lb=new LocalityBinding(typeutil.getRun(), false);
 363             lb.setGlobalThis(LocalityAnalysis.GLOBAL);
 364             outstructs.println("#define RUNMETHOD "+virtualcalls.getLocalityNumber(lb));
 365         }
 366
 367         outstructs.println("#define STRINGARRAYTYPE "+
 368                            (state.getArrayNumber(
 369                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass))).makeArray(state))+state.numClasses()));
 370
 371         outstructs.println("#define OBJECTARRAYTYPE "+
 372                            (state.getArrayNumber(
 373                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.ObjectClass))).makeArray(state))+state.numClasses()));
 374
 375
 376         outstructs.println("#define STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
 377         outstructs.println("#define CHARARRAYTYPE "+
 378                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
 379
 380         outstructs.println("#define BYTEARRAYTYPE "+
 381                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
 382
 383         outstructs.println("#define BYTEARRAYARRAYTYPE "+
 384                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
 385
 386         outstructs.println("#define NUMCLASSES "+state.numClasses());
 387         if (state.TASK) {
 388             outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
 389             outstructs.println("#define TAGTYPE "+typeutil.getClass(TypeUtil.TagClass).getId());
 390             outstructs.println("#define TAGARRAYTYPE "+
 391                                (state.getArrayNumber(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass)).makeArray(state))+state.numClasses()));
 392         }
 393     }
 394
 395     private void outputClassDeclarations(PrintWriter outclassdefs) {
 396         if (state.THREAD)
 397             outclassdefs.println("#include <pthread.h>");
 398         if(state.OPTIONAL)
 399             outclassdefs.println("#include \"optionalstruct.h\"");
 400         outclassdefs.println("struct "+arraytype+";");
 401         /* Start by declaring all structs */
 402         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 403         while(it.hasNext()) {
 404             ClassDescriptor cn=(ClassDescriptor)it.next();
 405             outclassdefs.println("struct "+cn.getSafeSymbol()+";");
 406         }
 407         outclassdefs.println("");
 408         //Print out definition for array type
 409         outclassdefs.println("struct "+arraytype+" {");
 410         outclassdefs.println("  int type;");
 411         if (state.THREAD) {
 412             outclassdefs.println("  pthread_t tid;");
 413             outclassdefs.println("  void * lockentry;");
 414             outclassdefs.println("  int lockcount;");
 415         }
 416         if (state.TASK) {
 417             outclassdefs.println("  int flag;");
 418             outclassdefs.println("  void * flagptr;");
 419             if(state.OPTIONAL){
 420                 outclassdefs.println("  int numfses;");
 421                 outclassdefs.println("  int * fses;");
 422             }
 423         }
 424         printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
 425
 426         outclassdefs.println("  int ___length___;");
 427         outclassdefs.println("};\n");
 428         outclassdefs.println("extern int classsize[];");
 429         outclassdefs.println("extern int hasflags[];");
 430         outclassdefs.println("extern unsigned int * pointerarray[];");
 431         outclassdefs.println("extern int supertypes[];");
 432     }
 433
 434     /** Prints out definitions for generic task structures */
 435
 436     private void outputTaskTypes(PrintWriter outtask) {
 437         outtask.println("#ifndef _TASK_H");
 438         outtask.println("#define _TASK_H");
 439         outtask.println("struct parameterdescriptor {");
 440         outtask.println("int type;");
 441         outtask.println("int numberterms;");
 442         outtask.println("int *intarray;");
 443         outtask.println("void * queue;");
 444         outtask.println("int numbertags;");
 445         outtask.println("int *tagarray;");
 446         outtask.println("};");
 447
 448         outtask.println("struct taskdescriptor {");
 449         outtask.println("void * taskptr;");
 450         outtask.println("int numParameters;");
 451         outtask.println("int numTotal;");
 452         outtask.println("struct parameterdescriptor **descriptorarray;");
 453         outtask.println("char * name;");
 454         outtask.println("};");
 455         outtask.println("extern struct taskdescriptor * taskarray[];");
 456         outtask.println("extern numtasks;");
 457         outtask.println("#endif");
 458     }
 459
 460
 461     private void buildRepairStructs(PrintWriter outrepairstructs) {
 462         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 463         while(classit.hasNext()) {
 464             ClassDescriptor cn=(ClassDescriptor)classit.next();
 465             outrepairstructs.println("structure "+cn.getSymbol()+" {");
 466             outrepairstructs.println("  int __type__;");
 467             if (state.TASK) {
 468                 outrepairstructs.println("  int __flag__;");
 469                 outrepairstructs.println("  int __flagptr__;");
 470             }
 471             printRepairStruct(cn, outrepairstructs);
 472             outrepairstructs.println("}\n");
 473         }
 474
 475         for(int i=0;i<state.numArrays();i++) {
 476             TypeDescriptor tdarray=arraytable[i];
 477             TypeDescriptor tdelement=tdarray.dereference();
 478             outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
 479             outrepairstructs.println("  int __type__;");
 480             printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
 481             outrepairstructs.println("  int length;");
 482             /*
 483               // Need to add support to repair tool for this
 484               if (tdelement.isClass()||tdelement.isArray())
 485                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" * elem[this.length];");
 486             else
 487                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" elem[this.length];");
 488             */
 489             outrepairstructs.println("}\n");
 490         }
 491     }
 492
 493     private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
 494         ClassDescriptor sp=cn.getSuperDesc();
 495         if (sp!=null)
 496             printRepairStruct(sp, output);
 497
 498         Vector fields=(Vector)fieldorder.get(cn);
 499
 500         for(int i=0;i<fields.size();i++) {
 501             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 502             if (fd.getType().isArray()) {
 503                 output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
 504             } else if (fd.getType().isClass())
 505                 output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
 506             else if (fd.getType().isFloat())
 507                 output.println("  int "+fd.getSymbol()+"; /* really float */");
 508             else
 509                 output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
 510         }
 511     }
 512
 513     /** This method outputs TaskDescriptor information */
 514     void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
 515         for (int i=0;i<task.numParameters();i++) {
 516             VarDescriptor param_var=task.getParameter(i);
 517             TypeDescriptor param_type=task.getParamType(i);
 518             FlagExpressionNode param_flag=task.getFlag(param_var);
 519             TagExpressionList param_tag=task.getTag(param_var);
 520
 521             int dnfterms;
 522             if (param_flag==null) {
 523                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 524                 output.println("0x0, 0x0 };");
 525                 dnfterms=1;
 526             } else {
 527                 DNFFlag dflag=param_flag.getDNF();
 528                 dnfterms=dflag.size();
 529
 530                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 531                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 532                 for(int j=0;j<dflag.size();j++) {
 533                     if (j!=0)
 534                         output.println(",");
 535                     Vector term=dflag.get(j);
 536                     int andmask=0;
 537                     int checkmask=0;
 538                     for(int k=0;k<term.size();k++) {
 539                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 540                         FlagDescriptor fd=dfa.getFlag();
 541                         boolean negated=dfa.getNegated();
 542                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 543                         andmask|=flagid;
 544                         if (!negated)
 545                             checkmask|=flagid;
 546                     }
 547                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 548                 }
 549                 output.println("};");
 550             }
 551
 552             output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
 553             //BUG...added next line to fix, test with any task program
 554             if (param_tag!=null)
 555                 for(int j=0;j<param_tag.numTags();j++) {
 556                     if (j!=0)
 557                         output.println(",");
 558                     /* for each tag we need */
 559                     /* which slot it is */
 560                     /* what type it is */
 561                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 562                     TempDescriptor tmp=param_tag.getTemp(j);
 563                     int slot=fm.getTagInt(tmp);
 564                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 565                 }
 566             output.println("};");
 567
 568             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
 569             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 570             output.println("/* number of DNF terms */"+dnfterms+",");
 571             output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
 572             output.println("0,");
 573             //BUG, added next line to fix and else statement...test
 574             //with any task program
 575             if (param_tag!=null)
 576                 output.println("/* number of tags */"+param_tag.numTags()+",");
 577             else
 578                 output.println("/* number of tags */ 0,");
 579             output.println("parametertag_"+i+"_"+task.getSafeSymbol());
 580             output.println("};");
 581         }
 582
 583
 584         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
 585         for (int i=0;i<task.numParameters();i++) {
 586             if (i!=0)
 587                 output.println(",");
 588             output.print("&parameter_"+i+"_"+task.getSafeSymbol());
 589         }
 590         output.println("};");
 591
 592         output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
 593         output.println("&"+task.getSafeSymbol()+",");
 594         output.println("/* number of parameters */" +task.numParameters() + ",");
 595         int numtotal=task.numParameters()+fm.numTags();
 596         output.println("/* number total parameters */" +numtotal + ",");
 597         output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
 598         output.println("\""+task.getSymbol()+"\"");
 599         output.println("};");
 600     }
 601
 602
 603     /** The buildVirtualTables method outputs the virtual dispatch
 604      * tables for methods. */
 605
 606     private void buildVirtualTables(PrintWriter outvirtual) {
 607         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 608         while(classit.hasNext()) {
 609             ClassDescriptor cd=(ClassDescriptor)classit.next();
 610             if (virtualcalls.getMethodCount(cd)>maxcount)
 611                 maxcount=virtualcalls.getMethodCount(cd);
 612         }
 613         MethodDescriptor[][] virtualtable=null;
 614         LocalityBinding[][] lbvirtualtable=null;
 615         if (state.DSM)
 616             lbvirtualtable=new LocalityBinding[state.numClasses()+state.numArrays()][maxcount];
 617         else
 618             virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
 619
 620         /* Fill in virtual table */
 621         classit=state.getClassSymbolTable().getDescriptorsIterator();
 622         while(classit.hasNext()) {
 623             ClassDescriptor cd=(ClassDescriptor)classit.next();
 624             if (state.DSM)
 625                 fillinRow(cd, lbvirtualtable, cd.getId());
 626             else
 627                 fillinRow(cd, virtualtable, cd.getId());
 628         }
 629
 630         ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
 631         Iterator arrayit=state.getArrayIterator();
 632         while(arrayit.hasNext()) {
 633             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 634             int id=state.getArrayNumber(td);
 635             if (state.DSM)
 636                 fillinRow(objectcd, lbvirtualtable, id+state.numClasses());
 637             else
 638                 fillinRow(objectcd, virtualtable, id+state.numClasses());
 639         }
 640
 641         outvirtual.print("void * virtualtable[]={");
 642         boolean needcomma=false;
 643         for(int i=0;i<state.numClasses()+state.numArrays();i++) {
 644             for(int j=0;j<maxcount;j++) {
 645                 if (needcomma)
 646                     outvirtual.print(", ");
 647                 if (state.DSM&&lbvirtualtable[i][j]!=null) {
 648                     LocalityBinding lb=lbvirtualtable[i][j];
 649                     MethodDescriptor md=lb.getMethod();
 650                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 651                 } else if (!state.DSM&&virtualtable[i][j]!=null) {
 652                     MethodDescriptor md=virtualtable[i][j];
 653                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 654                 } else {
 655                     outvirtual.print("0");
 656                 }
 657                 needcomma=true;
 658             }
 659             outvirtual.println("");
 660         }
 661         outvirtual.println("};");
 662         outvirtual.close();
 663     }
 664
 665     private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
 666         /* Get inherited methods */
 667         if (cd.getSuperDesc()!=null)
 668             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 669         /* Override them with our methods */
 670         for(Iterator it=cd.getMethods();it.hasNext();) {
 671             MethodDescriptor md=(MethodDescriptor)it.next();
 672             if (md.isStatic()||md.getReturnType()==null)
 673                 continue;
 674             int methodnum=virtualcalls.getMethodNumber(md);
 675             virtualtable[rownum][methodnum]=md;
 676         }
 677     }
 678
 679     private void fillinRow(ClassDescriptor cd, LocalityBinding[][] virtualtable, int rownum) {
 680         /* Get inherited methods */
 681         if (cd.getSuperDesc()!=null)
 682             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 683         /* Override them with our methods */
 684         if (locality.getClassBindings(cd)!=null)
 685             for(Iterator<LocalityBinding> lbit=locality.getClassBindings(cd).iterator();lbit.hasNext();) {
 686                 LocalityBinding lb=lbit.next();
 687                 MethodDescriptor md=lb.getMethod();
 688                 //Is the method static or a constructor
 689                 if (md.isStatic()||md.getReturnType()==null)
 690                     continue;
 691                 int methodnum=virtualcalls.getLocalityNumber(lb);
 692                 virtualtable[rownum][methodnum]=lb;
 693             }
 694     }
 695
 696
 697     /** Generate array that contains the sizes of class objects.  The
 698      * object allocation functions in the runtime use this
 699      * information. */
 700
 701     private void generateSizeArray(PrintWriter outclassdefs) {
 702         outclassdefs.print("int classsize[]={");
 703         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 704         cdarray=new ClassDescriptor[state.numClasses()];
 705         while(it.hasNext()) {
 706             ClassDescriptor cd=(ClassDescriptor)it.next();
 707             cdarray[cd.getId()]=cd;
 708         }
 709         boolean needcomma=false;
 710         for(int i=0;i<state.numClasses();i++) {
 711             if (needcomma)
 712                 outclassdefs.print(", ");
 713             outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
 714             needcomma=true;
 715         }
 716
 717         arraytable=new TypeDescriptor[state.numArrays()];
 718
 719         Iterator arrayit=state.getArrayIterator();
 720         while(arrayit.hasNext()) {
 721             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 722             int id=state.getArrayNumber(td);
 723             arraytable[id]=td;
 724         }
 725
 726         for(int i=0;i<state.numArrays();i++) {
 727             if (needcomma)
 728                 outclassdefs.print(", ");
 729             TypeDescriptor tdelement=arraytable[i].dereference();
 730             if (tdelement.isArray()||tdelement.isClass())
 731                 outclassdefs.print("sizeof(void *)");
 732             else
 733                 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
 734             needcomma=true;
 735         }
 736
 737         outclassdefs.println("};");
 738     }
 739
 740     /** Constructs params and temp objects for each method or task.
 741      * These objects tell the compiler which temps need to be
 742      * allocated.  */
 743
 744     private void generateTempStructs(FlatMethod fm, LocalityBinding lb) {
 745         MethodDescriptor md=fm.getMethod();
 746         TaskDescriptor task=fm.getTask();
 747         Set<TempDescriptor> saveset=lb!=null?locality.getTempSet(lb):null;
 748         ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
 749
 750         if (lb!=null)
 751             paramstable.put(lb, objectparams);
 752         else if (md!=null)
 753             paramstable.put(md, objectparams);
 754         else
 755             paramstable.put(task, objectparams);
 756
 757         for(int i=0;i<fm.numParameters();i++) {
 758             TempDescriptor temp=fm.getParameter(i);
 759             TypeDescriptor type=temp.getType();
 760             if (type.isPtr()&&GENERATEPRECISEGC)
 761                 objectparams.addPtr(temp);
 762             else
 763                 objectparams.addPrim(temp);
 764             if(lb!=null&&saveset.contains(temp)) {
 765                 backuptable.put(temp, temp.createNew());
 766             }
 767         }
 768
 769         for(int i=0;i<fm.numTags();i++) {
 770             TempDescriptor temp=fm.getTag(i);
 771             if (GENERATEPRECISEGC)
 772                 objectparams.addPtr(temp);
 773             else
 774                 objectparams.addPrim(temp);
 775         }
 776
 777         TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
 778         if (lb!=null)
 779             tempstable.put(lb, objecttemps);
 780         else if (md!=null)
 781             tempstable.put(md, objecttemps);
 782         else
 783             tempstable.put(task, objecttemps);
 784
 785         for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
 786             FlatNode fn=(FlatNode)nodeit.next();
 787             TempDescriptor[] writes=fn.writesTemps();
 788             for(int i=0;i<writes.length;i++) {
 789                 TempDescriptor temp=writes[i];
 790                 TypeDescriptor type=temp.getType();
 791                 if (type.isPtr()&&GENERATEPRECISEGC)
 792                     objecttemps.addPtr(temp);
 793                 else
 794                     objecttemps.addPrim(temp);
 795                 if(lb!=null&&saveset.contains(temp)&&
 796                    !backuptable.containsKey(temp))
 797                     backuptable.put(temp, temp.createNew());
 798             }
 799         }
 800
 801         /* Create backup temps */
 802         if (lb!=null) {
 803             for(Iterator<TempDescriptor> tmpit=backuptable.values().iterator();tmpit.hasNext();) {
 804                 TempDescriptor tmp=tmpit.next();
 805                 TypeDescriptor type=tmp.getType();
 806                 if (type.isPtr()&&GENERATEPRECISEGC)
 807                     objecttemps.addPtr(tmp);
 808                 else
 809                     objecttemps.addPrim(tmp);
 810             }
 811             /* Create temp to hold revert table */
 812             if (lb.getHasAtomic()) {
 813                 TempDescriptor reverttmp=new TempDescriptor("revertlist", typeutil.getClass(TypeUtil.ObjectClass));
 814                 if (GENERATEPRECISEGC)
 815                     objecttemps.addPtr(reverttmp);
 816                 else
 817                     objecttemps.addPrim(reverttmp);
 818                 reverttable.put(lb, reverttmp);
 819             }
 820         }
 821     }
 822
 823     /** This method outputs the following information about classes
 824      * and arrays:
 825      * (1) For classes, what are the locations of pointers.
 826      * (2) For arrays, does the array contain pointers or primitives.
 827      * (3) For classes, does the class contain flags.
 828      */
 829
 830     private void generateLayoutStructs(PrintWriter output) {
 831         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 832         while(it.hasNext()) {
 833             ClassDescriptor cn=(ClassDescriptor)it.next();
 834             output.println("unsigned int "+cn.getSafeSymbol()+"_pointers[]={");
 835             Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
 836             int count=0;
 837             while(allit.hasNext()) {
 838                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 839                 TypeDescriptor type=fd.getType();
 840                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 841                     continue;
 842                 if (type.isPtr())
 843                     count++;
 844             }
 845             output.print(count);
 846             allit=cn.getFieldTable().getAllDescriptorsIterator();
 847             while(allit.hasNext()) {
 848                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 849                 TypeDescriptor type=fd.getType();
 850                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 851                     continue;
 852                 if (type.isPtr()) {
 853                     output.println(",");
 854                     output.print("((unsigned int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
 855                 }
 856             }
 857             output.println("};");
 858         }
 859         output.println("unsigned int * pointerarray[]={");
 860         boolean needcomma=false;
 861         for(int i=0;i<state.numClasses();i++) {
 862             ClassDescriptor cn=cdarray[i];
 863             if (needcomma)
 864                 output.println(",");
 865             needcomma=true;
 866             output.print(cn.getSafeSymbol()+"_pointers");
 867         }
 868
 869         for(int i=0;i<state.numArrays();i++) {
 870             if (needcomma)
 871                 output.println(", ");
 872             TypeDescriptor tdelement=arraytable[i].dereference();
 873             if (tdelement.isArray()||tdelement.isClass())
 874                 output.print("((unsigned int *)1)");
 875             else
 876                 output.print("0");
 877             needcomma=true;
 878         }
 879
 880         output.println("};");
 881         needcomma=false;
 882         output.println("int hasflags[]={");
 883         for(int i=0;i<state.numClasses();i++) {
 884             ClassDescriptor cn=cdarray[i];
 885             if (needcomma)
 886                 output.println(", ");
 887             needcomma=true;
 888             if (cn.hasFlags())
 889                 output.print("1");
 890             else
 891                 output.print("0");
 892         }
 893         output.println("};");
 894     }
 895
 896     /** Print out table to give us supertypes */
 897     private void generateSuperTypeTable(PrintWriter output) {
 898         output.println("int supertypes[]={");
 899         boolean needcomma=false;
 900         for(int i=0;i<state.numClasses();i++) {
 901             ClassDescriptor cn=cdarray[i];
 902             if (needcomma)
 903                 output.println(",");
 904             needcomma=true;
 905             if (cn.getSuperDesc()!=null) {
 906                 ClassDescriptor cdsuper=cn.getSuperDesc();
 907                 output.print(cdsuper.getId());
 908             } else
 909                 output.print("-1");
 910         }
 911         output.println("};");
 912     }
 913
 914     /** Force consistent field ordering between inherited classes. */
 915
 916     private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
 917
 918         ClassDescriptor sp=cn.getSuperDesc();
 919         if (sp!=null)
 920             printClassStruct(sp, classdefout);
 921
 922         if (!fieldorder.containsKey(cn)) {
 923             Vector fields=new Vector();
 924             fieldorder.put(cn,fields);
 925             Iterator fieldit=cn.getFields();
 926             while(fieldit.hasNext()) {
 927                 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
 928                 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
 929                     fields.add(fd);
 930             }
 931         }
 932         Vector fields=(Vector)fieldorder.get(cn);
 933
 934         for(int i=0;i<fields.size();i++) {
 935             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 936             if (fd.getType().isClass()||fd.getType().isArray())
 937                 classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
 938             else
 939                 classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
 940         }
 941     }
 942
 943
 944     /* Map flags to integers consistently between inherited
 945      * classes. */
 946
 947     private void mapFlags(ClassDescriptor cn) {
 948         ClassDescriptor sp=cn.getSuperDesc();
 949         if (sp!=null)
 950             mapFlags(sp);
 951         int max=0;
 952         if (!flagorder.containsKey(cn)) {
 953             Hashtable flags=new Hashtable();
 954             flagorder.put(cn,flags);
 955             if (sp!=null) {
 956                 Hashtable superflags=(Hashtable)flagorder.get(sp);
 957                 Iterator superflagit=superflags.keySet().iterator();
 958                 while(superflagit.hasNext()) {
 959                     FlagDescriptor fd=(FlagDescriptor)superflagit.next();
 960                     Integer number=(Integer)superflags.get(fd);
 961                     flags.put(fd, number);
 962                     if ((number.intValue()+1)>max)
 963                         max=number.intValue()+1;
 964                 }
 965             }
 966
 967             Iterator flagit=cn.getFlags();
 968             while(flagit.hasNext()) {
 969                 FlagDescriptor fd=(FlagDescriptor)flagit.next();
 970                 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
 971                     flags.put(fd, new Integer(max++));
 972             }
 973         }
 974     }
 975
 976
 977     /** This function outputs (1) structures that parameters are
 978      * passed in (when PRECISE GC is enabled) and (2) function
 979      * prototypes for the methods */
 980
 981     private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
 982         /* Output class structure */
 983         classdefout.println("struct "+cn.getSafeSymbol()+" {");
 984         classdefout.println("  int type;");
 985         if (state.THREAD) {
 986             classdefout.println("  pthread_t tid;");
 987             classdefout.println("  void * lockentry;");
 988             classdefout.println("  int lockcount;");
 989         }
 990
 991         if (state.TASK) {
 992             classdefout.println("  int flag;");
 993             classdefout.println("  void * flagptr;");
 994             if (state.OPTIONAL){
 995                 classdefout.println("  int numfses;");
 996                 classdefout.println("  int * fses;");
 997             }
 998         }
 999         printClassStruct(cn, classdefout);
1000         classdefout.println("};\n");
1001
1002         if (state.DSM) {
1003             /* Cycle through LocalityBindings */
1004             HashSet<MethodDescriptor> nativemethods=new HashSet<MethodDescriptor>();
1005             Set<LocalityBinding> lbset=locality.getClassBindings(cn);
1006             if (lbset!=null) {
1007                 for(Iterator<LocalityBinding> lbit=lbset.iterator();lbit.hasNext();) {
1008                     LocalityBinding lb=lbit.next();
1009                     MethodDescriptor md=lb.getMethod();
1010                     if (md.getModifiers().isNative()) {
1011                         //make sure we only print a native method once
1012                         if (nativemethods.contains(md)) {
1013                             FlatMethod fm=state.getMethodFlat(md);
1014                             generateTempStructs(fm, lb);
1015                             continue;
1016                         } else
1017                             nativemethods.add(md);
1018                     }
1019                     generateMethod(cn, md, lb, headersout, output);
1020                 }
1021             }
1022             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1023                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1024                 if (md.getModifiers().isNative()&&!nativemethods.contains(md)) {
1025                     //Need to build param structure for library code
1026                     FlatMethod fm=state.getMethodFlat(md);
1027                     generateTempStructs(fm, null);
1028                     generateMethodParam(cn, md, null, output);
1029                 }
1030             }
1031
1032         } else
1033             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1034                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1035                 generateMethod(cn, md, null, headersout, output);
1036             }
1037     }
1038
1039     private void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter output) {
1040         /* Output parameter structure */
1041         if (GENERATEPRECISEGC) {
1042             ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1043             if (state.DSM&&lb!=null)
1044                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1045             else
1046                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1047             output.println("  int size;");
1048             output.println("  void * next;");
1049             for(int i=0;i<objectparams.numPointers();i++) {
1050                 TempDescriptor temp=objectparams.getPointer(i);
1051                 output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1052             }
1053             output.println("};\n");
1054         }
1055     }
1056
1057
1058     private void generateMethod(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter headersout, PrintWriter output) {
1059         FlatMethod fm=state.getMethodFlat(md);
1060         generateTempStructs(fm, lb);
1061
1062         ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1063         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md);
1064
1065         generateMethodParam(cn, md, lb, output);
1066
1067         /* Output temp structure */
1068         if (GENERATEPRECISEGC) {
1069             if (state.DSM)
1070                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1071             else
1072                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1073             output.println("  int size;");
1074             output.println("  void * next;");
1075             for(int i=0;i<objecttemps.numPointers();i++) {
1076                 TempDescriptor temp=objecttemps.getPointer(i);
1077                 if (temp.getType().isNull())
1078                     output.println("  void * "+temp.getSafeSymbol()+";");
1079                 else
1080                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1081             }
1082             output.println("};\n");
1083         }
1084
1085         /********* Output method declaration ***********/
1086
1087         /* First the return type */
1088         if (md.getReturnType()!=null) {
1089             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1090                 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1091             else
1092                 headersout.print(md.getReturnType().getSafeSymbol()+" ");
1093         } else
1094             //catch the constructor case
1095             headersout.print("void ");
1096
1097         /* Next the method name */
1098         if (state.DSM) {
1099             headersout.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1100         } else
1101             headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1102
1103         boolean printcomma=false;
1104         if (GENERATEPRECISEGC) {
1105             if (state.DSM) {
1106                 headersout.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1107             } else
1108                 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1109             printcomma=true;
1110         }
1111
1112         if (state.DSM&&lb.isAtomic()) {
1113             if (printcomma)
1114                 headersout.print(", ");
1115             headersout.print("transrecord_t * trans");
1116             printcomma=true;
1117         }
1118
1119         /*  Output parameter list*/
1120         for(int i=0;i<objectparams.numPrimitives();i++) {
1121             TempDescriptor temp=objectparams.getPrimitive(i);
1122             if (printcomma)
1123                 headersout.print(", ");
1124             printcomma=true;
1125             if (temp.getType().isClass()||temp.getType().isArray())
1126                 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1127             else
1128                 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1129         }
1130         headersout.println(");\n");
1131     }
1132
1133
1134     /** This function outputs (1) structures that parameters are
1135      * passed in (when PRECISE GC is enabled) and (2) function
1136      * prototypes for the tasks */
1137
1138     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
1139         /* Cycle through tasks */
1140         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
1141
1142         while(taskit.hasNext()) {
1143             /* Classify parameters */
1144             TaskDescriptor task=(TaskDescriptor)taskit.next();
1145             FlatMethod fm=state.getMethodFlat(task);
1146             generateTempStructs(fm, null);
1147
1148             ParamsObject objectparams=(ParamsObject) paramstable.get(task);
1149             TempObject objecttemps=(TempObject) tempstable.get(task);
1150
1151             /* Output parameter structure */
1152             if (GENERATEPRECISEGC) {
1153                 output.println("struct "+task.getSafeSymbol()+"_params {");
1154
1155                 output.println("  int size;");
1156                 output.println("  void * next;");
1157                 for(int i=0;i<objectparams.numPointers();i++) {
1158                     TempDescriptor temp=objectparams.getPointer(i);
1159                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1160                 }
1161
1162                 output.println("};\n");
1163                 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
1164                     maxtaskparams=objectparams.numPointers()+fm.numTags();
1165                 }
1166             }
1167
1168             /* Output temp structure */
1169             if (GENERATEPRECISEGC) {
1170                 output.println("struct "+task.getSafeSymbol()+"_locals {");
1171                 output.println("  int size;");
1172                 output.println("  void * next;");
1173                 for(int i=0;i<objecttemps.numPointers();i++) {
1174                     TempDescriptor temp=objecttemps.getPointer(i);
1175                     if (temp.getType().isNull())
1176                         output.println("  void * "+temp.getSafeSymbol()+";");
1177                     else if(temp.getType().isTag())
1178                         output.println("  struct "+
1179                                        (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1180                     else
1181                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1182                 }
1183                 output.println("};\n");
1184             }
1185
1186             /* Output task declaration */
1187             headersout.print("void " + task.getSafeSymbol()+"(");
1188
1189             boolean printcomma=false;
1190             if (GENERATEPRECISEGC) {
1191                 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1192             } else
1193                 headersout.print("void * parameterarray[]");
1194             headersout.println(");\n");
1195         }
1196     }
1197
1198     /***** Generate code for FlatMethod fm. *****/
1199
1200     private void generateFlatMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
1201         MethodDescriptor md=fm.getMethod();
1202
1203         TaskDescriptor task=fm.getTask();
1204
1205         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1206
1207         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:md!=null?md:task);
1208         generateHeader(fm, lb, md!=null?md:task,output);
1209         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1210         if (state.DSM&&lb.getHasAtomic()) {
1211             output.println("transrecord_t * trans;");
1212         }
1213
1214         if (GENERATEPRECISEGC) {
1215             if (md!=null&&state.DSM)
1216                 output.print("   struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1217             else if (md!=null&&!state.DSM)
1218                 output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1219             else
1220                 output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
1221
1222             output.print(objecttemp.numPointers()+",");
1223             output.print(paramsprefix);
1224             for(int j=0;j<objecttemp.numPointers();j++)
1225                 output.print(", NULL");
1226             output.println("};");
1227         }
1228
1229         for(int i=0;i<objecttemp.numPrimitives();i++) {
1230             TempDescriptor td=objecttemp.getPrimitive(i);
1231             TypeDescriptor type=td.getType();
1232             if (type.isNull())
1233                 output.println("   void * "+td.getSafeSymbol()+";");
1234             else if (type.isClass()||type.isArray())
1235                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
1236             else
1237                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
1238         }
1239
1240         /* Assign labels to FlatNode's if necessary.*/
1241
1242         Hashtable<FlatNode, Integer> nodetolabel=assignLabels(fm);
1243
1244         /* Check to see if we need to do a GC if this is a
1245          * multi-threaded program...*/
1246
1247         if (state.THREAD&&GENERATEPRECISEGC) {
1248             output.println("checkcollect(&"+localsprefix+");");
1249         }
1250
1251         /* Do the actual code generation */
1252         FlatNode current_node=null;
1253         HashSet tovisit=new HashSet();
1254         HashSet visited=new HashSet();
1255         tovisit.add(fm.getNext(0));
1256         while(current_node!=null||!tovisit.isEmpty()) {
1257             if (current_node==null) {
1258                 current_node=(FlatNode)tovisit.iterator().next();
1259                 tovisit.remove(current_node);
1260             }
1261             visited.add(current_node);
1262             if (nodetolabel.containsKey(current_node))
1263                 output.println("L"+nodetolabel.get(current_node)+":");
1264             if (state.INSTRUCTIONFAILURE) {
1265                 if (state.THREAD) {
1266                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1267                 }
1268                 else
1269                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1270             }
1271             if (current_node.numNext()==0) {
1272                 output.print("   ");
1273                 generateFlatNode(fm, lb, current_node, output);
1274                 if (current_node.kind()!=FKind.FlatReturnNode) {
1275                     output.println("   return;");
1276                 }
1277                 current_node=null;
1278             } else if(current_node.numNext()==1) {
1279                 output.print("   ");
1280                 generateFlatNode(fm, lb, current_node, output);
1281                 FlatNode nextnode=current_node.getNext(0);
1282                 if (visited.contains(nextnode)) {
1283                     output.println("goto L"+nodetolabel.get(nextnode)+";");
1284                     current_node=null;
1285                 } else
1286                     current_node=nextnode;
1287             } else if (current_node.numNext()==2) {
1288                 /* Branch */
1289                 output.print("   ");
1290                 generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1291                 if (!visited.contains(current_node.getNext(1)))
1292                     tovisit.add(current_node.getNext(1));
1293                 if (visited.contains(current_node.getNext(0))) {
1294                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1295                     current_node=null;
1296                 } else
1297                     current_node=current_node.getNext(0);
1298             } else throw new Error();
1299         }
1300
1301         output.println("}\n\n");
1302     }
1303
1304     /** This method assigns labels to FlatNodes */
1305
1306     private Hashtable<FlatNode, Integer> assignLabels(FlatMethod fm) {
1307         HashSet tovisit=new HashSet();
1308         HashSet visited=new HashSet();
1309         int labelindex=0;
1310         Hashtable<FlatNode, Integer> nodetolabel=new Hashtable<FlatNode, Integer>();
1311         tovisit.add(fm.getNext(0));
1312
1313         /*Assign labels first.  A node needs a label if the previous
1314          * node has two exits or this node is a join point. */
1315
1316         while(!tovisit.isEmpty()) {
1317             FlatNode fn=(FlatNode)tovisit.iterator().next();
1318             tovisit.remove(fn);
1319             visited.add(fn);
1320             for(int i=0;i<fn.numNext();i++) {
1321                 FlatNode nn=fn.getNext(i);
1322                 if(i>0) {
1323                     //1) Edge >1 of node
1324                     nodetolabel.put(nn,new Integer(labelindex++));
1325                 }
1326                 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1327                     tovisit.add(nn);
1328                 } else {
1329                     //2) Join point
1330                     nodetolabel.put(nn,new Integer(labelindex++));
1331                 }
1332             }
1333         }
1334         return nodetolabel;
1335     }
1336
1337
1338     /** Generate text string that corresponds to the TempDescriptor td. */
1339     private String generateTemp(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1340         MethodDescriptor md=fm.getMethod();
1341         TaskDescriptor task=fm.getTask();
1342         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1343
1344         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1345             return td.getSafeSymbol();
1346         }
1347
1348         if (objecttemps.isLocalPtr(td)) {
1349             return localsprefix+"."+td.getSafeSymbol();
1350         }
1351
1352         if (objecttemps.isParamPtr(td)) {
1353             return paramsprefix+"->"+td.getSafeSymbol();
1354         }
1355         throw new Error();
1356     }
1357
1358     private void generateFlatNode(FlatMethod fm, LocalityBinding lb, FlatNode fn, PrintWriter output) {
1359         switch(fn.kind()) {
1360         case FKind.FlatAtomicEnterNode:
1361             generateFlatAtomicEnterNode(fm, lb, (FlatAtomicEnterNode) fn, output);
1362             return;
1363         case FKind.FlatAtomicExitNode:
1364             generateFlatAtomicExitNode(fm, lb, (FlatAtomicExitNode) fn, output);
1365             return;
1366         case FKind.FlatGlobalConvNode:
1367             generateFlatGlobalConvNode(fm, lb, (FlatGlobalConvNode) fn, output);
1368             return;
1369         case FKind.FlatTagDeclaration:
1370             generateFlatTagDeclaration(fm, lb, (FlatTagDeclaration) fn,output);
1371             return;
1372         case FKind.FlatCall:
1373             generateFlatCall(fm, lb, (FlatCall) fn,output);
1374             return;
1375         case FKind.FlatFieldNode:
1376             generateFlatFieldNode(fm, lb, (FlatFieldNode) fn,output);
1377             return;
1378         case FKind.FlatElementNode:
1379             generateFlatElementNode(fm, lb, (FlatElementNode) fn,output);
1380             return;
1381         case FKind.FlatSetElementNode:
1382             generateFlatSetElementNode(fm, lb, (FlatSetElementNode) fn,output);
1383             return;
1384         case FKind.FlatSetFieldNode:
1385             generateFlatSetFieldNode(fm, lb, (FlatSetFieldNode) fn,output);
1386             return;
1387         case FKind.FlatNew:
1388             generateFlatNew(fm, lb, (FlatNew) fn,output);
1389             return;
1390         case FKind.FlatOpNode:
1391             generateFlatOpNode(fm, lb, (FlatOpNode) fn,output);
1392             return;
1393         case FKind.FlatCastNode:
1394             generateFlatCastNode(fm, lb, (FlatCastNode) fn,output);
1395             return;
1396         case FKind.FlatLiteralNode:
1397             generateFlatLiteralNode(fm, lb, (FlatLiteralNode) fn,output);
1398             return;
1399         case FKind.FlatReturnNode:
1400             generateFlatReturnNode(fm, lb, (FlatReturnNode) fn,output);
1401             return;
1402         case FKind.FlatNop:
1403             output.println("/* nop */");
1404             return;
1405         case FKind.FlatBackEdge:
1406             if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1407                 output.println("checkcollect(&"+localsprefix+");");
1408             } else
1409                 output.println("/* nop */");
1410             return;
1411         case FKind.FlatCheckNode:
1412             generateFlatCheckNode(fm, lb, (FlatCheckNode) fn, output);
1413             return;
1414         case FKind.FlatFlagActionNode:
1415             generateFlatFlagActionNode(fm, lb, (FlatFlagActionNode) fn, output);
1416             return;
1417         case FKind.FlatPrefetchNode:
1418             generateFlatPrefetchNode(fm,lb, (FlatPrefetchNode) fn, output);
1419             return;
1420         }
1421         throw new Error();
1422     }
1423
1424     public void generateFlatPrefetchNode(FlatMethod fm, LocalityBinding lb, FlatPrefetchNode fpn, PrintWriter output) {
1425             short[] arrayfields = null;
1426             Vector fieldoffset = new Vector();
1427             Vector endoffset = new Vector();
1428             Vector oids = new Vector();
1429             short offsetcount = 0;
1430             int tuplecount = 0;
1431             int i,j;
1432
1433             if (state.PREFETCH) {
1434                     Iterator it = fpn.hspp.iterator();
1435                     output.println("/* prefetch */");
1436                     /* TODO Add support for arrays, Currently handles only field pointers*/
1437                     /* The while loop below removes all prefetch tuples with arrays from the set of prefetches */
1438                     while(it.hasNext()) {
1439                             PrefetchPair pp = (PrefetchPair) it.next();
1440                             for(i = 0; i < pp.desc.size(); i++) {
1441                                     if(pp.getDescAt(i) instanceof IndexDescriptor) {
1442                                             fpn.hspp.remove((PrefetchPair) pp);
1443                                             it = fpn.hspp.iterator();
1444                                             break;
1445                                     }
1446                             }
1447                     }
1448                     it = fpn.hspp.iterator();
1449                     String oidlist = new String();
1450                     while(it.hasNext()) {
1451                             PrefetchPair pp = (PrefetchPair) it.next();
1452                             Integer statusbase = locality.getNodePreTempInfo(lb,fpn).get(pp.base);
1453                             /* Find prefetches that can generate oid */
1454                             if(statusbase == LocalityAnalysis.GLOBAL) {
1455                                     if(locality.getAtomic(lb).get(fpn).intValue()>0) { /* Inside transaction */
1456                                             generateInsideTransCode(fm,lb,output, pp,oids,fieldoffset,endoffset,tuplecount);
1457                                     } else {/* Outside Transaction */
1458                                             generateOutsideTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1459                                     }
1460                                     tuplecount++;
1461                             } else if(statusbase == LocalityAnalysis.LOCAL) {
1462                                     generateLocalTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1463                             } else {
1464                                     continue;
1465                             }
1466                     }
1467
1468                     /*Create C code for numtuples */
1469                     output.println("   int numtuples_" + count + " = " + tuplecount + ";");
1470
1471                     /*Create C code for oid array */
1472                     output.print("   unsigned int oidarray_" + count + "[] = {");
1473                     boolean needcomma=false;
1474                     it = oids.iterator();
1475                     while(it.hasNext()) {
1476                             if (needcomma)
1477                                     output.print(", ");
1478                             output.print(it.next());
1479                             needcomma=true;
1480                     }
1481                     output.println("};");
1482
1483                     /*Create C code for endoffset values */
1484                     output.print("   unsigned short endoffsetarry_" + count +"[] = {");
1485                     needcomma=false;
1486                     it = endoffset.iterator();
1487                     while(it.hasNext()) {
1488                             if (needcomma)
1489                                     output.print(", ");
1490                             output.print(it.next());
1491                             needcomma=true;
1492                     }
1493                     output.println("};");
1494
1495                     /*Create C code for Field Offset Values */
1496                     output.print("   short fieldarry_" + count +"[] = {");
1497                     needcomma=false;
1498                     it = fieldoffset.iterator();
1499                     while(it.hasNext()) {
1500                             if (needcomma)
1501                                     output.print(", ");
1502                             output.print(it.next());
1503                             needcomma=true;
1504                     }
1505                     output.println("};");
1506                     /* make the prefetch call to Runtime */
1507                     output.println("   prefetch((int) numtuples_"+count+ ", oidarray_"+count+ ", endoffsetarry_"+
1508                                     count+", fieldarry_"+count+");");
1509                     count++;
1510             }
1511     }
1512
1513     public void generateInsideTransCode(FlatMethod fm, LocalityBinding lb,PrintWriter output,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount){
1514             int i;
1515             short offsetcount = 0;
1516
1517             Object newdesc = pp.desc.get(0);
1518             if(newdesc instanceof FieldDescriptor) {
1519                     FieldDescriptor fd = (FieldDescriptor)newdesc;
1520                     String oid = new String("(unsigned int) (" +
1521                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1522                                     generateTemp(fm, pp.base, lb) + "->" + ((FieldDescriptor)fd).getSafeSymbol() +
1523                                     " : NULL)");
1524                     oids.add(oid);
1525             } else {
1526                     IndexDescriptor id = (IndexDescriptor)newdesc;
1527                     String tstlbl = new String();
1528                     for(i=0; i<id.tddesc.size(); i++) {
1529                             tstlbl += generateTemp(fm, id.getTempDescAt(i), lb) + "+";
1530                     }
1531                     tstlbl += id.offset.toString();
1532                     output.println("if ("+tstlbl+"< 0 || "+tstlbl+" > "+
1533                                     generateTemp(fm, pp.base, lb) + "->___length___) {");
1534                     output.println("    failedboundschk();");
1535                     output.println("}");
1536                     String oid = new String("(unsigned int) (" +
1537                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1538                                     generateTemp(fm, pp.base, lb) + "[" + tstlbl + "] : NULL)");
1539                     oids.add(oid);
1540             }
1541             for(i = 1; i < pp.desc.size(); i++) {
1542                     TypeDescriptor newtd;
1543                     String newfieldoffset;
1544                     Object desc = pp.getDescAt(i);
1545                     offsetcount++;
1546                     if(desc instanceof FieldDescriptor) {
1547                             Object prevdesc = pp.getDescAt(i-1);
1548                             if(prevdesc instanceof IndexDescriptor){
1549                                     if((i-1) == 0)
1550                                             newtd = pp.base.getType();
1551                                     //FIXME currently handles one dimensional arrays
1552                                     newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1553                             } else {
1554                                     newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1555                             }
1556                             newfieldoffset = new String("(short)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1557                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1558                             fieldoffset.add(newfieldoffset);
1559                     } else {
1560                             String tstlbl = new String();
1561                             for(i=0; i<((IndexDescriptor)desc).tddesc.size(); i++) {
1562                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(i), lb) + "+";
1563                             }
1564                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1565                             newfieldoffset = new String("(short)("+tstlbl+")");
1566                             fieldoffset.add(newfieldoffset);
1567                     }
1568             }
1569             if(tuplecount > 0) {
1570                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1571                     short endoffsetval = (short) tmp;
1572                     endoffset.add(endoffsetval);
1573             }else {
1574                     endoffset.add(offsetcount);
1575             }
1576     }
1577
1578     public void generateOutsideTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp, Vector oids, Vector fieldoffset, Vector endoffset, int tuplecount) {
1579             int i;
1580             short offsetcount = 0;
1581
1582             String oid = new String(" (unsigned int) (" + generateTemp(fm, pp.base, lb)+ ")");
1583             oids.add(oid);
1584             for(i = 0; i < pp.desc.size(); i++) {
1585                     TypeDescriptor newtd;
1586                     String newfieldoffset;
1587                     Object desc = pp.getDescAt(i);
1588                     offsetcount++;
1589                     if(desc instanceof FieldDescriptor) {
1590                             if(i == 0){
1591                                     newtd = pp.base.getType();
1592                             } else {
1593                                     Object prevdesc = pp.getDescAt(i-1);
1594                                     if(prevdesc instanceof IndexDescriptor){
1595                                             //FIXME currently handles one dimensional arrays
1596                                             newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1597                                     } else {
1598                                             newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1599                                     }
1600                             }
1601                             newfieldoffset = new String("(short)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1602                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1603                     } else {
1604                             String tstlbl = new String();
1605                             for(i=0; i<((IndexDescriptor)desc).tddesc.size(); i++) {
1606                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(i), lb) + "+";
1607                             }
1608                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1609                             newfieldoffset = new String("(short)("+tstlbl+")");
1610                     }
1611                     fieldoffset.add(newfieldoffset);
1612             }
1613             if(tuplecount > 0) {
1614                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1615                     short endoffsetval = (short) tmp;
1616                     endoffset.add(endoffsetval);
1617             }else {
1618                     endoffset.add(offsetcount);
1619             }
1620             tuplecount++;
1621     }
1622
1623     public void generateLocalTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount) {
1624             int i, j;
1625             short offsetcount = 0;
1626
1627             Vector prefix = new Vector();
1628             prefix.add(generateTemp(fm,pp.base,lb));
1629             String tstlbl = new String("(" + prefix.get(0) + " != NULL ");
1630             for (i = 0; i < pp.desc.size(); i++) {
1631                     Object newdesc = pp.desc.get(i);
1632                     if(newdesc instanceof FieldDescriptor) {
1633                             FieldDescriptor fd = (FieldDescriptor) newdesc;
1634                             if(fd.isGlobal()){
1635                                     /* Field descriptor is global */
1636                                     String oid = new String(" (unsigned int) (");
1637                                     tstlbl += ") ? ";
1638                                     for(j = 0; j < prefix.size(); j++) {
1639                                             tstlbl += prefix.get(j) + "->";
1640                                     }
1641                                     tstlbl += fd.getSafeSymbol() + ": NULL";
1642                                     oid += tstlbl+ " )";
1643                                     oids.add(oid);
1644                                     for(j=i+1; j < pp.desc.size(); j++) {
1645                                             TypeDescriptor newtd;
1646                                             String newfieldoffset;
1647                                             Object desc = pp.getDescAt(j);
1648                                             offsetcount++;
1649                                             if(desc instanceof FieldDescriptor) {
1650                                                     Object prevdesc = pp.getDescAt(j-1);
1651                                                     if(prevdesc instanceof IndexDescriptor){
1652                                                             //FIXME currently handles one dimensional arrays
1653                                                             newtd = ((FieldDescriptor)pp.getDescAt(j-2)).getType();
1654                                                     } else {
1655                                                             newtd = ((FieldDescriptor) pp.getDescAt(j-1)).getType();
1656                                                     }
1657                                                     newfieldoffset = new String("(short)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1658                                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1659                                             } else {
1660                                                     String indexlbl = new String();
1661                                                     for(i=0; i<((IndexDescriptor)desc).tddesc.size(); i++) {
1662                                                             indexlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(i), lb) + "+";
1663                                                     }
1664                                                     indexlbl += ((IndexDescriptor)desc).offset.toString();
1665                                                     newfieldoffset = new String("(short)("+indexlbl+")");
1666                                             }
1667                                             fieldoffset.add(newfieldoffset);
1668                                     }
1669                                     if(tuplecount > 0) {
1670                                             int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1671                                             short endoffsetval = (short) tmp;
1672                                             endoffset.add(endoffsetval);
1673                                     }else {
1674                                             endoffset.add(offsetcount);
1675                                     }
1676                                     tuplecount++;
1677                                     break; //break from outer for loop
1678                             } else {
1679                                     tstlbl += "&& ";
1680                                     for(j = 0; j < prefix.size(); j++) {
1681                                             tstlbl += prefix.get(j) + "->";
1682                                     }
1683                                     prefix.add(fd.getSafeSymbol());
1684                                     tstlbl += fd.getSafeSymbol() + " != NULL";
1685                             }
1686                     } else { /* if Index descriptor */
1687                             String indexstring = new String();
1688                             IndexDescriptor id = (IndexDescriptor) newdesc;
1689                             if(i == 0) {
1690                                     indexstring = generateTemp(fm, pp.base, lb);
1691                             } else {
1692                                     indexstring = ((FieldDescriptor)pp.getDescAt(i-1)).getSafeSymbol();
1693                             }
1694                             tstlbl += "&& ";
1695                             for(j = 0; j < prefix.size(); j++) {
1696                                     tstlbl += prefix.get(j) + "[";
1697                             }
1698                             indexstring += "[";
1699                             for(j=0; j<id.tddesc.size(); j++) {
1700                                     tstlbl += generateTemp(fm, id.getTempDescAt(j), lb) + "+";
1701                                     indexstring += generateTemp(fm,id.getTempDescAt(j), lb) + "+";
1702                             }
1703                             tstlbl += id.offset.toString()+ "]";
1704                             indexstring += id.offset.toString()+ "]";
1705                             prefix. removeElementAt(prefix.size() -1);
1706                             prefix.add(indexstring);
1707                             tstlbl += " != NULL";
1708                     }
1709             }
1710     }
1711
1712     public void generateFlatGlobalConvNode(FlatMethod fm, LocalityBinding lb, FlatGlobalConvNode fgcn, PrintWriter output) {
1713             if (lb!=fgcn.getLocality())
1714                     return;
1715             /* Have to generate flat globalconv */
1716             if (fgcn.getMakePtr()) {
1717                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)transRead(trans, (unsigned int) "+generateTemp(fm, fgcn.getSrc(),lb)+");");
1718             } else {
1719                     /* Need to convert to OID */
1720                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)COMPOID("+generateTemp(fm, fgcn.getSrc(),lb)+");");
1721             }
1722     }
1723
1724     public void generateFlatAtomicEnterNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicEnterNode faen, PrintWriter output) {
1725             /* Check to see if we need to generate code for this atomic */
1726             if (locality.getAtomic(lb).get(faen.getPrev(0)).intValue()>0)
1727                     return;
1728             /* Backup the temps. */
1729             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1730                     TempDescriptor tmp=tmpit.next();
1731                     output.println(generateTemp(fm, backuptable.get(tmp),lb)+"="+generateTemp(fm,tmp,lb)+";");
1732             }
1733             output.println("goto transstart"+faen.getIdentifier()+";");
1734
1735             /******* Print code to retry aborted transaction *******/
1736             output.println("transretry"+faen.getIdentifier()+":");
1737
1738             /* Restore temps */
1739             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1740                     TempDescriptor tmp=tmpit.next();
1741                     output.println(generateTemp(fm, tmp,lb)+"="+generateTemp(fm,backuptable.get(tmp),lb)+";");
1742             }
1743
1744             /********* Need to revert local object store ********/
1745             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1746
1747         output.println("while ("+revertptr+") {");
1748         output.println("struct ___Object___ * tmpptr;");
1749         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1750         output.println("REVERT_OBJ("+revertptr+");");
1751         output.println(revertptr+"=tmpptr;");
1752         output.println("}");
1753
1754         /******* Tell the runtime to start the transaction *******/
1755
1756         output.println("transstart"+faen.getIdentifier()+":");
1757         output.println("trans=transStart();");
1758     }
1759
1760     public void generateFlatAtomicExitNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicExitNode faen, PrintWriter output) {
1761         /* Check to see if we need to generate code for this atomic */
1762         if (locality.getAtomic(lb).get(faen).intValue()>0)
1763             return;
1764         //store the revert list before we lose the transaction object
1765         String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1766         output.println(revertptr+"=trans->revertlist;");
1767         output.println("if (transCommit(trans)) {");
1768         /* Transaction aborts if it returns true */
1769         output.println("goto transretry"+faen.getAtomicEnter().getIdentifier()+";");
1770         output.println("} else {");
1771         /* Need to commit local object store */
1772         output.println("while ("+revertptr+") {");
1773         output.println("struct ___Object___ * tmpptr;");
1774         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1775         output.println("COMMIT_OBJ("+revertptr+");");
1776         output.println(revertptr+"=tmpptr;");
1777         output.println("}");
1778         output.println("}");
1779     }
1780
1781     private void generateFlatCheckNode(FlatMethod fm,  LocalityBinding lb, FlatCheckNode fcn, PrintWriter output) {
1782         if (state.CONSCHECK) {
1783             String specname=fcn.getSpec();
1784             String varname="repairstate___";
1785             output.println("{");
1786             output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1787
1788             TempDescriptor[] temps=fcn.getTemps();
1789             String[] vars=fcn.getVars();
1790             for(int i=0;i<temps.length;i++) {
1791                 output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i],lb)+";");
1792             }
1793
1794             output.println("if (doanalysis"+specname+"("+varname+")) {");
1795             output.println("free"+specname+"_state("+varname+");");
1796             output.println("} else {");
1797             output.println("/* Bad invariant */");
1798             output.println("free"+specname+"_state("+varname+");");
1799             output.println("abort_task();");
1800             output.println("}");
1801             output.println("}");
1802         }
1803     }
1804
1805     private void generateFlatCall(FlatMethod fm, LocalityBinding lb, FlatCall fc, PrintWriter output) {
1806         MethodDescriptor md=fc.getMethod();
1807         ParamsObject objectparams=(ParamsObject)paramstable.get(state.DSM?locality.getBinding(lb, fc):md);
1808         ClassDescriptor cn=md.getClassDesc();
1809         output.println("{");
1810         if (GENERATEPRECISEGC) {
1811             if (state.DSM) {
1812                 LocalityBinding fclb=locality.getBinding(lb, fc);
1813                 output.print("       struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1814             } else
1815                 output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1816
1817             output.print(objectparams.numPointers());
1818             output.print(", & "+localsprefix);
1819             if (fc.getThis()!=null) {
1820                 output.print(", ");
1821                 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis(),lb));
1822             }
1823             for(int i=0;i<fc.numArgs();i++) {
1824                 Descriptor var=md.getParameter(i);
1825                 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1826                 if (objectparams.isParamPtr(paramtemp)) {
1827                     TempDescriptor targ=fc.getArg(i);
1828                     output.print(", ");
1829                     TypeDescriptor td=md.getParamType(i);
1830                     if (td.isTag())
1831                         output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1832                     else
1833                         output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1834                 }
1835             }
1836             output.println("};");
1837         }
1838         output.print("       ");
1839
1840
1841         if (fc.getReturnTemp()!=null)
1842             output.print(generateTemp(fm,fc.getReturnTemp(),lb)+"=");
1843
1844         /* Do we need to do virtual dispatch? */
1845         if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1846             //no
1847             if (state.DSM) {
1848                 LocalityBinding fclb=locality.getBinding(lb, fc);
1849                 output.print(cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1850             } else {
1851                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1852             }
1853         } else {
1854             //yes
1855             output.print("((");
1856             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1857                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1858             else
1859                 output.print(md.getReturnType().getSafeSymbol()+" ");
1860             output.print("(*)(");
1861
1862             boolean printcomma=false;
1863             if (GENERATEPRECISEGC) {
1864                 if (state.DSM) {
1865                     LocalityBinding fclb=locality.getBinding(lb, fc);
1866                     output.print("struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1867                 } else
1868                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1869                 printcomma=true;
1870             }
1871
1872             for(int i=0;i<objectparams.numPrimitives();i++) {
1873                 TempDescriptor temp=objectparams.getPrimitive(i);
1874                 if (printcomma)
1875                     output.print(", ");
1876                 printcomma=true;
1877                 if (temp.getType().isClass()||temp.getType().isArray())
1878                     output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1879                 else
1880                     output.print(temp.getType().getSafeSymbol());
1881             }
1882
1883             if (state.DSM) {
1884                 LocalityBinding fclb=locality.getBinding(lb, fc);
1885                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getLocalityNumber(fclb)+"])");
1886             } else
1887                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1888         }
1889
1890         output.print("(");
1891         boolean needcomma=false;
1892         if (GENERATEPRECISEGC) {
1893             output.print("&__parameterlist__");
1894             needcomma=true;
1895         }
1896
1897         if (state.DSM&&locality.getBinding(lb,fc).isAtomic()) {
1898             if (needcomma)
1899                 output.print(",");
1900             output.print("trans");
1901             needcomma=true;
1902         }
1903
1904         if (!GENERATEPRECISEGC) {
1905             if (fc.getThis()!=null) {
1906                 TypeDescriptor ptd=md.getThis().getType();
1907                 if (needcomma)
1908                     output.print(",");
1909                 if (ptd.isClass()&&!ptd.isArray())
1910                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1911                 output.print(generateTemp(fm,fc.getThis(),lb));
1912                 needcomma=true;
1913             }
1914         }
1915
1916         for(int i=0;i<fc.numArgs();i++) {
1917             Descriptor var=md.getParameter(i);
1918             TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1919             if (objectparams.isParamPrim(paramtemp)) {
1920                 TempDescriptor targ=fc.getArg(i);
1921                 if (needcomma)
1922                     output.print(", ");
1923
1924                 TypeDescriptor ptd=md.getParamType(i);
1925                 if (ptd.isClass()&&!ptd.isArray())
1926                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1927                 output.print(generateTemp(fm, targ,lb));
1928                 needcomma=true;
1929             }
1930         }
1931         output.println(");");
1932         output.println("   }");
1933     }
1934
1935     private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1936         Set subclasses=typeutil.getSubClasses(thiscd);
1937         if (subclasses==null)
1938             return true;
1939         for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1940             ClassDescriptor cd=(ClassDescriptor)classit.next();
1941             Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1942             for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1943                 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1944                 if (md.matches(matchmd))
1945                     return false;
1946             }
1947         }
1948         return true;
1949     }
1950
1951     private void generateFlatFieldNode(FlatMethod fm, LocalityBinding lb, FlatFieldNode ffn, PrintWriter output) {
1952         if (state.DSM) {
1953             Integer status=locality.getNodePreTempInfo(lb,ffn).get(ffn.getSrc());
1954             if (status==LocalityAnalysis.GLOBAL) {
1955                 String field=ffn.getField().getSafeSymbol();
1956                 String src=generateTemp(fm, ffn.getSrc(),lb);
1957                 String dst=generateTemp(fm, ffn.getDst(),lb);
1958
1959                 if (ffn.getField().getType().isPtr()) {
1960
1961                     //TODO: Uncomment this when we have runtime support
1962                     //if (ffn.getSrc()==ffn.getDst()) {
1963                     //output.println("{");
1964                     //output.println("void * temp="+src+";");
1965                     //output.println("if (temp&0x1) {");
1966                     //output.println("temp=(void *) transRead(trans, (unsigned int) temp);");
1967                     //output.println(src+"->"+field+"="+temp+";");
1968                     //output.println("}");
1969                     //output.println(dst+"=temp;");
1970                     //output.println("}");
1971                     //} else {
1972                     output.println(dst+"="+ src +"->"+field+ ";");
1973                     //output.println("if ("+dst+"&0x1) {");
1974                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
1975                     //output.println(src+"->"+field+"="+src+"->"+field+";");
1976                     //output.println("}");
1977                     //}
1978                 } else {
1979                     output.println(dst+"="+ src+"->"+field+";");
1980                 }
1981             } else if (status==LocalityAnalysis.LOCAL) {
1982                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1983             } else if (status==LocalityAnalysis.EITHER) {
1984                 //Code is reading from a null pointer
1985                 output.println("if ("+generateTemp(fm, ffn.getSrc(),lb)+") {");
1986                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
1987                 //This should throw a suitable null pointer error
1988                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1989             } else
1990                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
1991         } else
1992             output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1993     }
1994
1995
1996     private void generateFlatSetFieldNode(FlatMethod fm, LocalityBinding lb, FlatSetFieldNode fsfn, PrintWriter output) {
1997         if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
1998             throw new Error("Can't set array length");
1999         if (state.DSM && locality.getAtomic(lb).get(fsfn).intValue()>0) {
2000             Integer statussrc=locality.getNodePreTempInfo(lb,fsfn).get(fsfn.getSrc());
2001             Integer statusdst=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
2002             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2003
2004             String src=generateTemp(fm,fsfn.getSrc(),lb);
2005             String dst=generateTemp(fm,fsfn.getDst(),lb);
2006             if (srcglobal) {
2007                 output.println("{");
2008                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2009             }
2010             if (statusdst.equals(LocalityAnalysis.GLOBAL)) {
2011                 String glbdst=dst;
2012                 //mark it dirty
2013                 output.println("*((unsigned int *)&("+dst+"->___localcopy___))|=DIRTY;");
2014                 if (srcglobal) {
2015                     output.println("*((unsigned int *)&("+glbdst+"->"+ fsfn.getField().getSafeSymbol()+"))=srcoid;");
2016                 } else
2017                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2018             } else if (statusdst.equals(LocalityAnalysis.LOCAL)) {
2019                 /** Check if we need to copy */
2020                 output.println("if(!"+dst+"->"+localcopystr+") {");
2021                 /* Link object into list */
2022                 output.println(dst+"->"+nextobjstr+"=trans->revertlist;");
2023                 output.println("trans->revertlist=(struct ___Object___ *)"+dst+";");
2024                 if (GENERATEPRECISEGC)
2025                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
2026                 else
2027                     output.println("COPY_OBJ("+dst+");");
2028                 output.println("}");
2029                 if (srcglobal)
2030                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2031                 else
2032                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2033             } else if (statusdst.equals(LocalityAnalysis.EITHER)) {
2034                 //writing to a null...bad
2035                 output.println("if ("+dst+") {");
2036                 output.println("printf(\"BIG ERROR 2\\n\");exit(-1);}");
2037                 if (srcglobal)
2038                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2039                 else
2040                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2041             }
2042             if (srcglobal) {
2043                 output.println("}");
2044             }
2045         } else {
2046             output.println(generateTemp(fm, fsfn.getDst(),lb)+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc(),lb)+";");
2047         }
2048     }
2049
2050     private void generateFlatElementNode(FlatMethod fm, LocalityBinding lb, FlatElementNode fen, PrintWriter output) {
2051         TypeDescriptor elementtype=fen.getSrc().getType().dereference();
2052         String type="";
2053
2054         if (elementtype.isArray()||elementtype.isClass())
2055             type="void *";
2056         else
2057             type=elementtype.getSafeSymbol()+" ";
2058
2059         if (fen.needsBoundsCheck()) {
2060             output.println("if ("+generateTemp(fm, fen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fen.getIndex(),lb)+" >= "+generateTemp(fm,fen.getSrc(),lb) + "->___length___)");
2061             output.println("failedboundschk();");
2062         }
2063
2064         output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2065     }
2066
2067     private void generateFlatSetElementNode(FlatMethod fm, LocalityBinding lb, FlatSetElementNode fsen, PrintWriter output) {
2068         //TODO: need dynamic check to make sure this assignment is actually legal
2069         //Because Object[] could actually be something more specific...ie. Integer[]
2070
2071         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
2072         String type="";
2073
2074         if (elementtype.isArray()||elementtype.isClass())
2075             type="void *";
2076         else
2077             type=elementtype.getSafeSymbol()+" ";
2078
2079         if (fsen.needsBoundsCheck()) {
2080             output.println("if ("+generateTemp(fm, fsen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fsen.getIndex(),lb)+" >= "+generateTemp(fm,fsen.getDst(),lb) + "->___length___)");
2081             output.println("failedboundschk();");
2082         }
2083
2084         output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2085     }
2086
2087     private void generateFlatNew(FlatMethod fm, LocalityBinding lb, FlatNew fn, PrintWriter output) {
2088         if (fn.getType().isArray()) {
2089             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
2090             if (fn.isGlobal()) {
2091                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarrayglobal(trans, "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2092             } else if (GENERATEPRECISEGC) {
2093                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2094             } else {
2095                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2096             }
2097         } else {
2098             if (fn.isGlobal()) {
2099                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newglobal(trans, "+fn.getType().getClassDesc().getId()+");");
2100             } else if (GENERATEPRECISEGC) {
2101                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
2102             } else {
2103                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
2104             }
2105         }
2106     }
2107
2108     private void generateFlatTagDeclaration(FlatMethod fm, LocalityBinding lb, FlatTagDeclaration fn, PrintWriter output) {
2109         if (GENERATEPRECISEGC) {
2110             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
2111         } else {
2112             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag("+state.getTagId(fn.getType())+");");
2113         }
2114     }
2115
2116     private void generateFlatOpNode(FlatMethod fm, LocalityBinding lb, FlatOpNode fon, PrintWriter output) {
2117         if (fon.getRight()!=null)
2118             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+fon.getOp().toString()+generateTemp(fm,fon.getRight(),lb)+";");
2119         else if (fon.getOp().getOp()==Operation.ASSIGN)
2120             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2121         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
2122             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2123         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
2124             output.println(generateTemp(fm, fon.getDest(),lb)+" = -"+generateTemp(fm, fon.getLeft(),lb)+";");
2125         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
2126             output.println(generateTemp(fm, fon.getDest(),lb)+" = !"+generateTemp(fm, fon.getLeft(),lb)+";");
2127         else if (fon.getOp().getOp()==Operation.ISAVAILABLE) {
2128             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+"->fses==NULL;");
2129         } else
2130             output.println(generateTemp(fm, fon.getDest(),lb)+fon.getOp().toString()+generateTemp(fm, fon.getLeft(),lb)+";");
2131     }
2132
2133     private void generateFlatCastNode(FlatMethod fm, LocalityBinding lb, FlatCastNode fcn, PrintWriter output) {
2134         /* TODO: Do type check here */
2135         if (fcn.getType().isArray()) {
2136             throw new Error();
2137         } else if (fcn.getType().isClass())
2138             output.println(generateTemp(fm,fcn.getDst(),lb)+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc(),lb)+";");
2139         else
2140             output.println(generateTemp(fm,fcn.getDst(),lb)+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc(),lb)+";");
2141     }
2142
2143     private void generateFlatLiteralNode(FlatMethod fm, LocalityBinding lb, FlatLiteralNode fln, PrintWriter output) {
2144         if (fln.getValue()==null)
2145             output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2146         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
2147             if (GENERATEPRECISEGC) {
2148                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2149             } else {
2150                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2151             }
2152         } else if (fln.getType().isBoolean()) {
2153             if (((Boolean)fln.getValue()).booleanValue())
2154                 output.println(generateTemp(fm, fln.getDst(),lb)+"=1;");
2155             else
2156                 output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2157         } else if (fln.getType().isChar()) {
2158             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
2159             output.println(generateTemp(fm, fln.getDst(),lb)+"='"+st+"';");
2160         } else
2161             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+";");
2162     }
2163
2164     private void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
2165         if (frn.getReturnTemp()!=null) {
2166             if (frn.getReturnTemp().getType().isPtr())
2167                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2168             else
2169                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2170         } else
2171             output.println("return;");
2172     }
2173
2174     private void generateFlatCondBranch(FlatMethod fm, LocalityBinding lb, FlatCondBranch fcb, String label, PrintWriter output) {
2175         output.println("if (!"+generateTemp(fm, fcb.getTest(),lb)+") goto "+label+";");
2176     }
2177
2178     /** This method generates header information for the method or
2179      * task referenced by the Descriptor des. */
2180
2181     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
2182         /* Print header */
2183         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
2184         MethodDescriptor md=null;
2185         TaskDescriptor task=null;
2186         if (des instanceof MethodDescriptor)
2187             md=(MethodDescriptor) des;
2188         else
2189             task=(TaskDescriptor) des;
2190
2191         ClassDescriptor cn=md!=null?md.getClassDesc():null;
2192
2193         if (md!=null&&md.getReturnType()!=null) {
2194             if (md.getReturnType().isClass()||md.getReturnType().isArray())
2195                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
2196             else
2197                 output.print(md.getReturnType().getSafeSymbol()+" ");
2198         } else
2199             //catch the constructor case
2200             output.print("void ");
2201         if (md!=null) {
2202             if (state.DSM) {
2203                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2204             } else
2205                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2206         } else
2207             output.print(task.getSafeSymbol()+"(");
2208
2209         boolean printcomma=false;
2210         if (GENERATEPRECISEGC) {
2211             if (md!=null) {
2212                 if (state.DSM) {
2213                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2214                 } else
2215                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2216             } else
2217                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
2218             printcomma=true;
2219         }
2220
2221         if (state.DSM&&lb.isAtomic()) {
2222             if (printcomma)
2223                 output.print(", ");
2224             output.print("transrecord_t * trans");
2225             printcomma=true;
2226         }
2227
2228         if (md!=null) {
2229             /* Method */
2230             for(int i=0;i<objectparams.numPrimitives();i++) {
2231                 TempDescriptor temp=objectparams.getPrimitive(i);
2232                 if (printcomma)
2233                     output.print(", ");
2234                 printcomma=true;
2235                 if (temp.getType().isClass()||temp.getType().isArray())
2236                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
2237                 else
2238                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
2239             }
2240             output.println(") {");
2241         } else if (!GENERATEPRECISEGC) {
2242             /* Imprecise Task */
2243             output.println("void * parameterarray[]) {");
2244             /* Unpack variables */
2245             for(int i=0;i<objectparams.numPrimitives();i++) {
2246                 TempDescriptor temp=objectparams.getPrimitive(i);
2247                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
2248             }
2249             for(int i=0;i<fm.numTags();i++) {
2250                 TempDescriptor temp=fm.getTag(i);
2251                 int offset=i+objectparams.numPrimitives();
2252                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
2253             }
2254
2255             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
2256                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
2257         } else output.println(") {");
2258     }
2259
2260     public void generateFlatFlagActionNode(FlatMethod fm, LocalityBinding lb, FlatFlagActionNode ffan, PrintWriter output) {
2261         output.println("/* FlatFlagActionNode */");
2262
2263
2264         /* Process tag changes */
2265         Relation tagsettable=new Relation();
2266         Relation tagcleartable=new Relation();
2267
2268         Iterator tagsit=ffan.getTempTagPairs();
2269         while (tagsit.hasNext()) {
2270             TempTagPair ttp=(TempTagPair) tagsit.next();
2271             TempDescriptor objtmp=ttp.getTemp();
2272             TagDescriptor tag=ttp.getTag();
2273             TempDescriptor tagtmp=ttp.getTagTemp();
2274             boolean tagstatus=ffan.getTagChange(ttp);
2275             if (tagstatus) {
2276                 tagsettable.put(objtmp, tagtmp);
2277             } else {
2278                 tagcleartable.put(objtmp, tagtmp);
2279             }
2280         }
2281
2282
2283         Hashtable flagandtable=new Hashtable();
2284         Hashtable flagortable=new Hashtable();
2285
2286         /* Process flag changes */
2287         Iterator flagsit=ffan.getTempFlagPairs();
2288         while(flagsit.hasNext()) {
2289             TempFlagPair tfp=(TempFlagPair)flagsit.next();
2290             TempDescriptor temp=tfp.getTemp();
2291             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
2292             FlagDescriptor flag=tfp.getFlag();
2293             if (flag==null) {
2294                 //Newly allocate objects that don't set any flags case
2295                 if (flagortable.containsKey(temp)) {
2296                     throw new Error();
2297                 }
2298                 int mask=0;
2299                 flagortable.put(temp,new Integer(mask));
2300             } else {
2301                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
2302                 boolean flagstatus=ffan.getFlagChange(tfp);
2303                 if (flagstatus) {
2304                     int mask=0;
2305                     if (flagortable.containsKey(temp)) {
2306                         mask=((Integer)flagortable.get(temp)).intValue();
2307                     }
2308                     mask|=flagid;
2309                     flagortable.put(temp,new Integer(mask));
2310                 } else {
2311                     int mask=0xFFFFFFFF;
2312                     if (flagandtable.containsKey(temp)) {
2313                         mask=((Integer)flagandtable.get(temp)).intValue();
2314                     }
2315                     mask&=(0xFFFFFFFF^flagid);
2316                     flagandtable.put(temp,new Integer(mask));
2317                 }
2318             }
2319         }
2320
2321
2322         HashSet flagtagset=new HashSet();
2323         flagtagset.addAll(flagortable.keySet());
2324         flagtagset.addAll(flagandtable.keySet());
2325         flagtagset.addAll(tagsettable.keySet());
2326         flagtagset.addAll(tagcleartable.keySet());
2327
2328         Iterator ftit=flagtagset.iterator();
2329         while(ftit.hasNext()) {
2330             TempDescriptor temp=(TempDescriptor)ftit.next();
2331
2332
2333             Set tagtmps=tagcleartable.get(temp);
2334             if (tagtmps!=null) {
2335                 Iterator tagit=tagtmps.iterator();
2336                 while(tagit.hasNext()) {
2337                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2338                     if (GENERATEPRECISEGC)
2339                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2340                     else
2341                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2342                 }
2343             }
2344
2345             tagtmps=tagsettable.get(temp);
2346             if (tagtmps!=null) {
2347                 Iterator tagit=tagtmps.iterator();
2348                 while(tagit.hasNext()) {
2349                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2350                     if (GENERATEPRECISEGC)
2351                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2352                     else
2353                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp, lb)+", "+generateTemp(fm,tagtmp, lb)+");");
2354                 }
2355             }
2356
2357             int ormask=0;
2358             int andmask=0xFFFFFFF;
2359
2360             if (flagortable.containsKey(temp))
2361                 ormask=((Integer)flagortable.get(temp)).intValue();
2362             if (flagandtable.containsKey(temp))
2363                 andmask=((Integer)flagandtable.get(temp)).intValue();
2364             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2365                 output.println("flagorandinit("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2366             } else {
2367                 output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2368             }
2369         }
2370     }
2371
2372     void generateOptionalHeader(PrintWriter headers) {
2373
2374          //GENERATE HEADERS
2375          headers.println("#include \"task.h\"\n\n");
2376          headers.println("#ifndef _OPTIONAL_STRUCT_");
2377          headers.println("#define _OPTIONAL_STRUCT_");
2378
2379          //STRUCT PREDICATEMEMBER
2380          headers.println("struct predicatemember{");
2381          headers.println("int type;");
2382          headers.println("int numdnfterms;");
2383          headers.println("int * flags;");
2384          headers.println("int numtags;");
2385          headers.println("int * tags;\n};\n\n");
2386
2387          //STRUCT OPTIONALTASKDESCRIPTOR
2388          headers.println("struct optionaltaskdescriptor{");
2389          headers.println("struct taskdescriptor * task;");
2390          headers.println("int index;");
2391          headers.println("int numenterflags;");
2392          headers.println("int * enterflags;");
2393          headers.println("int numpredicatemembers;");
2394          headers.println("struct predicatemember ** predicatememberarray;");
2395          headers.println("};\n\n");
2396
2397          //STRUCT TASKFAILURE
2398          headers.println("struct taskfailure {");
2399          headers.println("struct taskdescriptor * task;");
2400          headers.println("int index;");
2401          headers.println("int numoptionaltaskdescriptors;");
2402          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2403
2404          //STRUCT FSANALYSISWRAPPER
2405          headers.println("struct fsanalysiswrapper{");
2406          headers.println("int  flags;");
2407          headers.println("int numtags;");
2408          headers.println("int * tags;");
2409          headers.println("int numtaskfailures;");
2410          headers.println("struct taskfailure ** taskfailurearray;");
2411          headers.println("int numoptionaltaskdescriptors;");
2412          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2413
2414          //STRUCT CLASSANALYSISWRAPPER
2415          headers.println("struct classanalysiswrapper{");
2416          headers.println("int type;");
2417          headers.println("int numotd;");
2418          headers.println("struct optionaltaskdescriptor ** otdarray;");
2419          headers.println("int numfsanalysiswrappers;");
2420          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};");
2421
2422          headers.println("extern struct classanalysiswrapper * classanalysiswrapperarray[];");
2423
2424          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2425          while(taskit.hasNext()) {
2426              TaskDescriptor td=(TaskDescriptor)taskit.next();
2427              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2428          }
2429
2430     }
2431
2432     //CHECK OVER THIS -- THERE COULD BE SOME ERRORS HERE
2433     int generateOptionalPredicate(Predicate predicate, OptionalTaskDescriptor otd, ClassDescriptor cdtemp, PrintWriter output) {
2434         int predicateindex = 0;
2435         //iterate through the classes concerned by the predicate
2436         Set c_vard = predicate.vardescriptors;
2437         Hashtable<TempDescriptor, Integer> slotnumber=new Hashtable<TempDescriptor, Integer>();
2438         int current_slot=0;
2439
2440         for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2441             VarDescriptor vard = (VarDescriptor)vard_it.next();
2442             TypeDescriptor typed = vard.getType();
2443
2444             //generate for flags
2445             HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2446             output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2447             int numberterms=0;
2448             if (fen_hashset!=null){
2449                 for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2450                     FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2451                     if (fen!=null) {
2452                         DNFFlag dflag=fen.getDNF();
2453                         numberterms+=dflag.size();
2454
2455                         Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2456
2457                         for(int j=0;j<dflag.size();j++) {
2458                             if (j!=0)
2459                                 output.println(",");
2460                             Vector term=dflag.get(j);
2461                             int andmask=0;
2462                             int checkmask=0;
2463                             for(int k=0;k<term.size();k++) {
2464                                 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2465                                 FlagDescriptor fd=dfa.getFlag();
2466                                 boolean negated=dfa.getNegated();
2467                                 int flagid=1<<((Integer)flags.get(fd)).intValue();
2468                                 andmask|=flagid;
2469                                 if (!negated)
2470                                     checkmask|=flagid;
2471                             }
2472                             output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2473                         }
2474                     }
2475                 }
2476             }
2477             output.println("};\n");
2478
2479             //generate for tags
2480             TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2481             output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2482             int numtags = 0;
2483             if (tagel!=null){
2484                 for(int j=0;j<tagel.numTags();j++) {
2485                     if (j!=0)
2486                         output.println(",");
2487                     TempDescriptor tmp=tagel.getTemp(j);
2488                     if (!slotnumber.containsKey(tmp)) {
2489                         Integer slotint=new Integer(current_slot++);
2490                         slotnumber.put(tmp,slotint);
2491                     }
2492                     int slot=slotnumber.get(tmp).intValue();
2493                     output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
2494                 }
2495                 numtags = tagel.numTags();
2496             }
2497             output.println("};");
2498
2499             //store the result into a predicatemember struct
2500             output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2501             output.println("/*type*/"+typed.getClassDesc().getId()+",");
2502             output.println("/* number of dnf terms */"+numberterms+",");
2503             output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2504             output.println("/* number of tag */"+numtags+",");
2505             output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2506             output.println("};\n");
2507             predicateindex++;
2508         }
2509
2510
2511         //generate an array that stores the entire predicate
2512         output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2513         for( int j = 0; j<predicateindex; j++){
2514             if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2515             else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2516         }
2517         output.println("};\n");
2518         return predicateindex;
2519     }
2520
2521
2522      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, Set<OptionalTaskDescriptor>>> safeexecution, Hashtable optionaltaskdescriptors) {
2523          generateOptionalHeader(headers);
2524          //GENERATE STRUCTS
2525          output.println("#include \"optionalstruct.h\"\n\n");
2526          output.println("#include \"stdlib.h\"\n");
2527
2528          HashSet processedcd = new HashSet();
2529          int maxotd=0;
2530          Enumeration e = safeexecution.keys();
2531          while (e.hasMoreElements()) {
2532              int numotd=0;
2533              //get the class
2534              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2535              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2536
2537              //Generate the struct of optionals
2538              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2539              numotd = c_otd.size();
2540              if(maxotd<numotd) maxotd = numotd;
2541              if( !c_otd.isEmpty() ){
2542                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2543                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2544
2545                      //generate the int arrays for the predicate
2546                      Predicate predicate = otd.predicate;
2547                      int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
2548                      TreeSet<Integer> fsset=new TreeSet<Integer>();
2549                      //iterate through possible FSes corresponding to
2550                      //the state when entering
2551
2552                      for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext();){
2553                          FlagState fs = (FlagState)fses.next();
2554                          int flagid=0;
2555                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2556                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2557                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2558                              flagid|=id;
2559                          }
2560                          fsset.add(new Integer(flagid));
2561                          //tag information not needed because tag
2562                          //changes are not tolerated.
2563                      }
2564
2565                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2566                      boolean needcomma=false;
2567                      for(Iterator<Integer> it=fsset.iterator();it.hasNext();) {
2568                          if(needcomma)
2569                              output.print(", ");
2570                          output.println(it.next());
2571                      }
2572
2573                      output.println("};\n");
2574
2575
2576                      //generate optionaltaskdescriptor that actually
2577                      //includes exit fses, predicate and the task
2578                      //concerned
2579                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2580                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2581                      output.println("/*index*/"+otd.getIndex()+",");
2582                      output.println("/*number of enter flags*/"+fsset.size()+",");
2583                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2584                      output.println("/*number of members */"+predicateindex+",");
2585                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2586                      output.println("};\n");
2587                  }
2588              } else
2589                  continue;
2590              // if there are no optionals, there is no need to build the rest of the struct
2591
2592              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2593              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2594              if( !c_otd.isEmpty() ){
2595                  boolean needcomma=false;
2596                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2597                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2598                      if(needcomma)
2599                          output.println(",");
2600                      needcomma=true;
2601                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2602                  }
2603              }
2604              output.println("};\n");
2605
2606              //get all the possible flagstates reachable by an object
2607              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2608              int fscounter = 0;
2609              TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
2610              fsts.addAll(hashtbtemp.keySet());
2611              for(Iterator fsit=fsts.iterator();fsit.hasNext();) {
2612                  FlagState fs = (FlagState)fsit.next();
2613                  fscounter++;
2614
2615                  //get the set of OptionalTaskDescriptors corresponding
2616                  HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
2617                  //iterate through the OptionalTaskDescriptors and
2618                  //store the pointers to the optionals struct (see on
2619                  //top) into an array
2620
2621                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2622                  for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext();){
2623                      OptionalTaskDescriptor mm = mos.next();
2624                      if(!mos.hasNext())
2625                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2626                      else
2627                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2628                  }
2629
2630                  output.println("};\n");
2631
2632                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2633
2634                  int flagid=0;
2635                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2636                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2637                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2638                      flagid|=id;
2639                  }
2640
2641                  //process tag information
2642
2643                  int tagcounter = 0;
2644                  boolean first = true;
2645                  Enumeration tag_enum = fs.getTags();
2646                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2647                  while(tag_enum.hasMoreElements()){
2648                      tagcounter++;
2649                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2650                      if(first==true)
2651                          first = false;
2652                      else
2653                          output.println(", ");
2654                      output.println("/*tagid*/"+state.getTagId(tagd));
2655                  }
2656                  output.println("};");
2657
2658                  Set<TaskIndex> tiset=sa.getTaskIndex(fs);
2659                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2660                      TaskIndex ti=itti.next();
2661                      if (ti.isRuntime())
2662                          continue;
2663
2664                      Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
2665
2666                      output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
2667                      boolean needcomma=false;
2668                      for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator();otdit.hasNext();) {
2669                          OptionalTaskDescriptor otd=otdit.next();
2670                          if(needcomma)
2671                              output.print(", ");
2672                          needcomma=true;
2673                          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2674                      }
2675                      output.println("};");
2676
2677                      output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
2678                      output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
2679                      output.print(ti.getIndex()+", ");
2680                      output.print(otdset.size()+", ");
2681                      output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
2682                      output.println("};");
2683                  }
2684
2685                  tiset=sa.getTaskIndex(fs);
2686                  boolean needcomma=false;
2687                  int runtimeti=0;
2688                  output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2689                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2690                      TaskIndex ti=itti.next();
2691                      if (ti.isRuntime()) {
2692                          runtimeti++;
2693                          continue;
2694                      }
2695                      if (needcomma)
2696                          output.print(", ");
2697                      needcomma=true;
2698                      output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
2699                  }
2700                  output.println("};\n");
2701
2702                  //Store the result in fsanalysiswrapper
2703
2704                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2705                  output.println("/*flag*/"+flagid+",");
2706                  output.println("/* number of tags*/"+tagcounter+",");
2707                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2708                  output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
2709                  output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2710                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2711                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2712                  output.println("};\n");
2713
2714              }
2715
2716              //Build the array of fsanalysiswrappers
2717              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2718              boolean needcomma=false;
2719              for(int i = 0; i<fscounter; i++){
2720                  if (needcomma) output.print(",");
2721                  output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
2722                  needcomma=true;
2723              }
2724              output.println("};");
2725
2726              //Build the classanalysiswrapper referring to the previous array
2727              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2728              output.println("/*type*/"+cdtemp.getId()+",");
2729              output.println("/*numotd*/"+numotd+",");
2730              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2731              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2732              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2733              processedcd.add(cdtemp);
2734          }
2735
2736          //build an array containing every classes for which code has been build
2737          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2738          for(int i=0;i<state.numClasses();i++) {
2739              ClassDescriptor cn=cdarray[i];
2740              if (i>0)
2741                  output.print(", ");
2742              if (processedcd.contains(cn))
2743                  output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
2744              else
2745                  output.print("NULL");
2746          }
2747          output.println("};");
2748
2749          output.println("#define MAXOTD "+maxotd);
2750          headers.println("#endif");
2751      }
2752
2753     public List<OptionalTaskDescriptor> ordertd(Set<OptionalTaskDescriptor> otdset) {
2754         Relation r=new Relation();
2755         for(Iterator<OptionalTaskDescriptor>otdit=otdset.iterator();otdit.hasNext();) {
2756             OptionalTaskDescriptor otd=otdit.next();
2757             TaskIndex ti=new TaskIndex(otd.td, otd.getIndex());
2758             r.put(ti, otd);
2759         }
2760
2761         LinkedList<OptionalTaskDescriptor> l=new LinkedList<OptionalTaskDescriptor>();
2762         for(Iterator it=r.keySet().iterator();it.hasNext();) {
2763             Set s=r.get(it.next());
2764             for(Iterator it2=s.iterator();it2.hasNext();) {
2765                 OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
2766                 l.add(otd);
2767             }
2768         }
2769
2770         return l;
2771     }
2772 }
2773
2774
2775
2776
2777
2778