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.THREAD||state.DSM) {
 195             outmethod.println("initializethreads();");
 196         }
 197         if (state.DSM) {
 198             outmethod.println("if (dstmStartup(argv[1])) {");
 199             if (GENERATEPRECISEGC) {
 200                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-2);");
 201             } else {
 202                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-2);");
 203             }
 204         } else {
 205             if (GENERATEPRECISEGC) {
 206                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
 207             } else {
 208                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
 209             }
 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||state.DSM) {
 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             if (state.THREAD)
 260                 outmethod.println("pthread_exit(NULL);");
 261         }
 262
 263
 264         outmethod.println("}");
 265     }
 266
 267     /* This method outputs code for each task. */
 268
 269     private void outputTaskCode(PrintWriter outtaskdefs, PrintWriter outmethod) {
 270         /* Compile task based program */
 271         outtaskdefs.println("#include \"task.h\"");
 272         outtaskdefs.println("#include \"methodheaders.h\"");
 273         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 274         while(taskit.hasNext()) {
 275             TaskDescriptor td=(TaskDescriptor)taskit.next();
 276             FlatMethod fm=state.getMethodFlat(td);
 277             generateFlatMethod(fm, null, outmethod);
 278             generateTaskDescriptor(outtaskdefs, fm, td);
 279         }
 280
 281         //Output task descriptors
 282         taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 283         outtaskdefs.println("struct taskdescriptor * taskarray[]= {");
 284         boolean first=true;
 285         while(taskit.hasNext()) {
 286             TaskDescriptor td=(TaskDescriptor)taskit.next();
 287             if (first)
 288                 first=false;
 289             else
 290                 outtaskdefs.println(",");
 291             outtaskdefs.print("&task_"+td.getSafeSymbol());
 292         }
 293         outtaskdefs.println("};");
 294
 295         outtaskdefs.println("int numtasks="+state.getTaskSymbolTable().getValueSet().size()+";");
 296     }
 297
 298     /* This method outputs most of the methods.c file.  This includes
 299      * some standard includes and then an array with the sizes of
 300      * objets and array that stores supertype and then the code for
 301      * the Java methods.. */
 302
 303     private void outputMethods(PrintWriter outmethod) {
 304         outmethod.println("#include \"methodheaders.h\"");
 305         outmethod.println("#include \"virtualtable.h\"");
 306         outmethod.println("#include <runtime.h>");
 307         if (state.DSM) {
 308             outmethod.println("#include \"localobjects.h\"");
 309         }
 310         if (state.THREAD||state.DSM)
 311             outmethod.println("#include <thread.h>");
 312         if (state.main!=null) {
 313             outmethod.println("#include <string.h>");
 314         }
 315         if (state.CONSCHECK) {
 316             outmethod.println("#include \"checkers.h\"");
 317         }
 318         //Store the sizes of classes & array elements
 319         generateSizeArray(outmethod);
 320
 321         //Store table of supertypes
 322         generateSuperTypeTable(outmethod);
 323
 324         //Store the layout of classes
 325         generateLayoutStructs(outmethod);
 326
 327         /* Generate code for methods */
 328         if (state.DSM) {
 329             for(Iterator<LocalityBinding> lbit=locality.getLocalityBindings().iterator();lbit.hasNext();) {
 330                 LocalityBinding lb=lbit.next();
 331                 MethodDescriptor md=lb.getMethod();
 332                 FlatMethod fm=state.getMethodFlat(md);
 333                 if (!md.getModifiers().isNative()) {
 334                         generateFlatMethod(fm, lb, outmethod);
 335                 }
 336             }
 337         } else {
 338             Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 339             while(classit.hasNext()) {
 340                 ClassDescriptor cn=(ClassDescriptor)classit.next();
 341                 Iterator methodit=cn.getMethods();
 342                 while(methodit.hasNext()) {
 343                     /* Classify parameters */
 344                     MethodDescriptor md=(MethodDescriptor)methodit.next();
 345                     FlatMethod fm=state.getMethodFlat(md);
 346                     if (!md.getModifiers().isNative()) {
 347                         generateFlatMethod(fm, null, outmethod);
 348                     }
 349                 }
 350             }
 351         }
 352     }
 353
 354     private void outputStructs(PrintWriter outstructs) {
 355         outstructs.println("#ifndef STRUCTDEFS_H");
 356         outstructs.println("#define STRUCTDEFS_H");
 357         outstructs.println("#include \"classdefs.h\"");
 358
 359         /* Output #defines that the runtime uses to determine type
 360          * numbers for various objects it needs */
 361         outstructs.println("#define MAXCOUNT "+maxcount);
 362         if (state.DSM) {
 363             LocalityBinding lb=new LocalityBinding(typeutil.getRun(), false);
 364             lb.setGlobalThis(LocalityAnalysis.GLOBAL);
 365             outstructs.println("#define RUNMETHOD "+virtualcalls.getLocalityNumber(lb));
 366         }
 367
 368         outstructs.println("#define STRINGARRAYTYPE "+
 369                            (state.getArrayNumber(
 370                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass))).makeArray(state))+state.numClasses()));
 371
 372         outstructs.println("#define OBJECTARRAYTYPE "+
 373                            (state.getArrayNumber(
 374                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.ObjectClass))).makeArray(state))+state.numClasses()));
 375
 376
 377         outstructs.println("#define STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
 378         outstructs.println("#define CHARARRAYTYPE "+
 379                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
 380
 381         outstructs.println("#define BYTEARRAYTYPE "+
 382                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
 383
 384         outstructs.println("#define BYTEARRAYARRAYTYPE "+
 385                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
 386
 387         outstructs.println("#define NUMCLASSES "+state.numClasses());
 388         if (state.TASK) {
 389             outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
 390             outstructs.println("#define TAGTYPE "+typeutil.getClass(TypeUtil.TagClass).getId());
 391             outstructs.println("#define TAGARRAYTYPE "+
 392                                (state.getArrayNumber(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass)).makeArray(state))+state.numClasses()));
 393         }
 394     }
 395
 396     private void outputClassDeclarations(PrintWriter outclassdefs) {
 397         if (state.THREAD||state.DSM)
 398             outclassdefs.println("#include <pthread.h>");
 399         if(state.OPTIONAL)
 400             outclassdefs.println("#include \"optionalstruct.h\"");
 401         outclassdefs.println("struct "+arraytype+";");
 402         /* Start by declaring all structs */
 403         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 404         while(it.hasNext()) {
 405             ClassDescriptor cn=(ClassDescriptor)it.next();
 406             outclassdefs.println("struct "+cn.getSafeSymbol()+";");
 407         }
 408         outclassdefs.println("");
 409         //Print out definition for array type
 410         outclassdefs.println("struct "+arraytype+" {");
 411         outclassdefs.println("  int type;");
 412         if (state.THREAD) {
 413             outclassdefs.println("  pthread_t tid;");
 414             outclassdefs.println("  void * lockentry;");
 415             outclassdefs.println("  int lockcount;");
 416         }
 417         if (state.TASK) {
 418             outclassdefs.println("  int flag;");
 419             outclassdefs.println("  void * flagptr;");
 420             if(state.OPTIONAL){
 421                 outclassdefs.println("  int numfses;");
 422                 outclassdefs.println("  int * fses;");
 423             }
 424         }
 425         printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
 426
 427         outclassdefs.println("  int ___length___;");
 428         outclassdefs.println("};\n");
 429         outclassdefs.println("extern int classsize[];");
 430         outclassdefs.println("extern int hasflags[];");
 431         outclassdefs.println("extern unsigned int * pointerarray[];");
 432         outclassdefs.println("extern int supertypes[];");
 433     }
 434
 435     /** Prints out definitions for generic task structures */
 436
 437     private void outputTaskTypes(PrintWriter outtask) {
 438         outtask.println("#ifndef _TASK_H");
 439         outtask.println("#define _TASK_H");
 440         outtask.println("struct parameterdescriptor {");
 441         outtask.println("int type;");
 442         outtask.println("int numberterms;");
 443         outtask.println("int *intarray;");
 444         outtask.println("void * queue;");
 445         outtask.println("int numbertags;");
 446         outtask.println("int *tagarray;");
 447         outtask.println("};");
 448
 449         outtask.println("struct taskdescriptor {");
 450         outtask.println("void * taskptr;");
 451         outtask.println("int numParameters;");
 452         outtask.println("int numTotal;");
 453         outtask.println("struct parameterdescriptor **descriptorarray;");
 454         outtask.println("char * name;");
 455         outtask.println("};");
 456         outtask.println("extern struct taskdescriptor * taskarray[];");
 457         outtask.println("extern numtasks;");
 458         outtask.println("#endif");
 459     }
 460
 461
 462     private void buildRepairStructs(PrintWriter outrepairstructs) {
 463         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 464         while(classit.hasNext()) {
 465             ClassDescriptor cn=(ClassDescriptor)classit.next();
 466             outrepairstructs.println("structure "+cn.getSymbol()+" {");
 467             outrepairstructs.println("  int __type__;");
 468             if (state.TASK) {
 469                 outrepairstructs.println("  int __flag__;");
 470                 outrepairstructs.println("  int __flagptr__;");
 471             }
 472             printRepairStruct(cn, outrepairstructs);
 473             outrepairstructs.println("}\n");
 474         }
 475
 476         for(int i=0;i<state.numArrays();i++) {
 477             TypeDescriptor tdarray=arraytable[i];
 478             TypeDescriptor tdelement=tdarray.dereference();
 479             outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
 480             outrepairstructs.println("  int __type__;");
 481             printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
 482             outrepairstructs.println("  int length;");
 483             /*
 484               // Need to add support to repair tool for this
 485               if (tdelement.isClass()||tdelement.isArray())
 486                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" * elem[this.length];");
 487             else
 488                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" elem[this.length];");
 489             */
 490             outrepairstructs.println("}\n");
 491         }
 492     }
 493
 494     private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
 495         ClassDescriptor sp=cn.getSuperDesc();
 496         if (sp!=null)
 497             printRepairStruct(sp, output);
 498
 499         Vector fields=(Vector)fieldorder.get(cn);
 500
 501         for(int i=0;i<fields.size();i++) {
 502             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 503             if (fd.getType().isArray()) {
 504                 output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
 505             } else if (fd.getType().isClass())
 506                 output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
 507             else if (fd.getType().isFloat())
 508                 output.println("  int "+fd.getSymbol()+"; /* really float */");
 509             else
 510                 output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
 511         }
 512     }
 513
 514     /** This method outputs TaskDescriptor information */
 515     void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
 516         for (int i=0;i<task.numParameters();i++) {
 517             VarDescriptor param_var=task.getParameter(i);
 518             TypeDescriptor param_type=task.getParamType(i);
 519             FlagExpressionNode param_flag=task.getFlag(param_var);
 520             TagExpressionList param_tag=task.getTag(param_var);
 521
 522             int dnfterms;
 523             if (param_flag==null) {
 524                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 525                 output.println("0x0, 0x0 };");
 526                 dnfterms=1;
 527             } else {
 528                 DNFFlag dflag=param_flag.getDNF();
 529                 dnfterms=dflag.size();
 530
 531                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 532                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 533                 for(int j=0;j<dflag.size();j++) {
 534                     if (j!=0)
 535                         output.println(",");
 536                     Vector term=dflag.get(j);
 537                     int andmask=0;
 538                     int checkmask=0;
 539                     for(int k=0;k<term.size();k++) {
 540                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 541                         FlagDescriptor fd=dfa.getFlag();
 542                         boolean negated=dfa.getNegated();
 543                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 544                         andmask|=flagid;
 545                         if (!negated)
 546                             checkmask|=flagid;
 547                     }
 548                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 549                 }
 550                 output.println("};");
 551             }
 552
 553             output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
 554             //BUG...added next line to fix, test with any task program
 555             if (param_tag!=null)
 556                 for(int j=0;j<param_tag.numTags();j++) {
 557                     if (j!=0)
 558                         output.println(",");
 559                     /* for each tag we need */
 560                     /* which slot it is */
 561                     /* what type it is */
 562                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 563                     TempDescriptor tmp=param_tag.getTemp(j);
 564                     int slot=fm.getTagInt(tmp);
 565                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 566                 }
 567             output.println("};");
 568
 569             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
 570             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 571             output.println("/* number of DNF terms */"+dnfterms+",");
 572             output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
 573             output.println("0,");
 574             //BUG, added next line to fix and else statement...test
 575             //with any task program
 576             if (param_tag!=null)
 577                 output.println("/* number of tags */"+param_tag.numTags()+",");
 578             else
 579                 output.println("/* number of tags */ 0,");
 580             output.println("parametertag_"+i+"_"+task.getSafeSymbol());
 581             output.println("};");
 582         }
 583
 584
 585         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
 586         for (int i=0;i<task.numParameters();i++) {
 587             if (i!=0)
 588                 output.println(",");
 589             output.print("&parameter_"+i+"_"+task.getSafeSymbol());
 590         }
 591         output.println("};");
 592
 593         output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
 594         output.println("&"+task.getSafeSymbol()+",");
 595         output.println("/* number of parameters */" +task.numParameters() + ",");
 596         int numtotal=task.numParameters()+fm.numTags();
 597         output.println("/* number total parameters */" +numtotal + ",");
 598         output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
 599         output.println("\""+task.getSymbol()+"\"");
 600         output.println("};");
 601     }
 602
 603
 604     /** The buildVirtualTables method outputs the virtual dispatch
 605      * tables for methods. */
 606
 607     private void buildVirtualTables(PrintWriter outvirtual) {
 608         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 609         while(classit.hasNext()) {
 610             ClassDescriptor cd=(ClassDescriptor)classit.next();
 611             if (virtualcalls.getMethodCount(cd)>maxcount)
 612                 maxcount=virtualcalls.getMethodCount(cd);
 613         }
 614         MethodDescriptor[][] virtualtable=null;
 615         LocalityBinding[][] lbvirtualtable=null;
 616         if (state.DSM)
 617             lbvirtualtable=new LocalityBinding[state.numClasses()+state.numArrays()][maxcount];
 618         else
 619             virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
 620
 621         /* Fill in virtual table */
 622         classit=state.getClassSymbolTable().getDescriptorsIterator();
 623         while(classit.hasNext()) {
 624             ClassDescriptor cd=(ClassDescriptor)classit.next();
 625             if (state.DSM)
 626                 fillinRow(cd, lbvirtualtable, cd.getId());
 627             else
 628                 fillinRow(cd, virtualtable, cd.getId());
 629         }
 630
 631         ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
 632         Iterator arrayit=state.getArrayIterator();
 633         while(arrayit.hasNext()) {
 634             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 635             int id=state.getArrayNumber(td);
 636             if (state.DSM)
 637                 fillinRow(objectcd, lbvirtualtable, id+state.numClasses());
 638             else
 639                 fillinRow(objectcd, virtualtable, id+state.numClasses());
 640         }
 641
 642         outvirtual.print("void * virtualtable[]={");
 643         boolean needcomma=false;
 644         for(int i=0;i<state.numClasses()+state.numArrays();i++) {
 645             for(int j=0;j<maxcount;j++) {
 646                 if (needcomma)
 647                     outvirtual.print(", ");
 648                 if (state.DSM&&lbvirtualtable[i][j]!=null) {
 649                     LocalityBinding lb=lbvirtualtable[i][j];
 650                     MethodDescriptor md=lb.getMethod();
 651                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 652                 } else if (!state.DSM&&virtualtable[i][j]!=null) {
 653                     MethodDescriptor md=virtualtable[i][j];
 654                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 655                 } else {
 656                     outvirtual.print("0");
 657                 }
 658                 needcomma=true;
 659             }
 660             outvirtual.println("");
 661         }
 662         outvirtual.println("};");
 663         outvirtual.close();
 664     }
 665
 666     private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
 667         /* Get inherited methods */
 668         if (cd.getSuperDesc()!=null)
 669             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 670         /* Override them with our methods */
 671         for(Iterator it=cd.getMethods();it.hasNext();) {
 672             MethodDescriptor md=(MethodDescriptor)it.next();
 673             if (md.isStatic()||md.getReturnType()==null)
 674                 continue;
 675             int methodnum=virtualcalls.getMethodNumber(md);
 676             virtualtable[rownum][methodnum]=md;
 677         }
 678     }
 679
 680     private void fillinRow(ClassDescriptor cd, LocalityBinding[][] virtualtable, int rownum) {
 681         /* Get inherited methods */
 682         if (cd.getSuperDesc()!=null)
 683             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 684         /* Override them with our methods */
 685         if (locality.getClassBindings(cd)!=null)
 686             for(Iterator<LocalityBinding> lbit=locality.getClassBindings(cd).iterator();lbit.hasNext();) {
 687                 LocalityBinding lb=lbit.next();
 688                 MethodDescriptor md=lb.getMethod();
 689                 //Is the method static or a constructor
 690                 if (md.isStatic()||md.getReturnType()==null)
 691                     continue;
 692                 int methodnum=virtualcalls.getLocalityNumber(lb);
 693                 virtualtable[rownum][methodnum]=lb;
 694             }
 695     }
 696
 697
 698     /** Generate array that contains the sizes of class objects.  The
 699      * object allocation functions in the runtime use this
 700      * information. */
 701
 702     private void generateSizeArray(PrintWriter outclassdefs) {
 703         outclassdefs.print("int classsize[]={");
 704         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 705         cdarray=new ClassDescriptor[state.numClasses()];
 706         while(it.hasNext()) {
 707             ClassDescriptor cd=(ClassDescriptor)it.next();
 708             cdarray[cd.getId()]=cd;
 709         }
 710         boolean needcomma=false;
 711         for(int i=0;i<state.numClasses();i++) {
 712             if (needcomma)
 713                 outclassdefs.print(", ");
 714             outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
 715             needcomma=true;
 716         }
 717
 718         arraytable=new TypeDescriptor[state.numArrays()];
 719
 720         Iterator arrayit=state.getArrayIterator();
 721         while(arrayit.hasNext()) {
 722             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 723             int id=state.getArrayNumber(td);
 724             arraytable[id]=td;
 725         }
 726
 727         for(int i=0;i<state.numArrays();i++) {
 728             if (needcomma)
 729                 outclassdefs.print(", ");
 730             TypeDescriptor tdelement=arraytable[i].dereference();
 731             if (tdelement.isArray()||tdelement.isClass())
 732                 outclassdefs.print("sizeof(void *)");
 733             else
 734                 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
 735             needcomma=true;
 736         }
 737
 738         outclassdefs.println("};");
 739     }
 740
 741     /** Constructs params and temp objects for each method or task.
 742      * These objects tell the compiler which temps need to be
 743      * allocated.  */
 744
 745     private void generateTempStructs(FlatMethod fm, LocalityBinding lb) {
 746         MethodDescriptor md=fm.getMethod();
 747         TaskDescriptor task=fm.getTask();
 748         Set<TempDescriptor> saveset=lb!=null?locality.getTempSet(lb):null;
 749         ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
 750
 751         if (lb!=null)
 752             paramstable.put(lb, objectparams);
 753         else if (md!=null)
 754             paramstable.put(md, objectparams);
 755         else
 756             paramstable.put(task, objectparams);
 757
 758         for(int i=0;i<fm.numParameters();i++) {
 759             TempDescriptor temp=fm.getParameter(i);
 760             TypeDescriptor type=temp.getType();
 761             if (type.isPtr()&&GENERATEPRECISEGC)
 762                 objectparams.addPtr(temp);
 763             else
 764                 objectparams.addPrim(temp);
 765             if(lb!=null&&saveset.contains(temp)) {
 766                 backuptable.put(temp, temp.createNew());
 767             }
 768         }
 769
 770         for(int i=0;i<fm.numTags();i++) {
 771             TempDescriptor temp=fm.getTag(i);
 772             if (GENERATEPRECISEGC)
 773                 objectparams.addPtr(temp);
 774             else
 775                 objectparams.addPrim(temp);
 776         }
 777
 778         TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
 779         if (lb!=null)
 780             tempstable.put(lb, objecttemps);
 781         else if (md!=null)
 782             tempstable.put(md, objecttemps);
 783         else
 784             tempstable.put(task, objecttemps);
 785
 786         for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
 787             FlatNode fn=(FlatNode)nodeit.next();
 788             TempDescriptor[] writes=fn.writesTemps();
 789             for(int i=0;i<writes.length;i++) {
 790                 TempDescriptor temp=writes[i];
 791                 TypeDescriptor type=temp.getType();
 792                 if (type.isPtr()&&GENERATEPRECISEGC)
 793                     objecttemps.addPtr(temp);
 794                 else
 795                     objecttemps.addPrim(temp);
 796                 if(lb!=null&&saveset.contains(temp)&&
 797                    !backuptable.containsKey(temp))
 798                     backuptable.put(temp, temp.createNew());
 799             }
 800         }
 801
 802         /* Create backup temps */
 803         if (lb!=null) {
 804             for(Iterator<TempDescriptor> tmpit=backuptable.values().iterator();tmpit.hasNext();) {
 805                 TempDescriptor tmp=tmpit.next();
 806                 TypeDescriptor type=tmp.getType();
 807                 if (type.isPtr()&&GENERATEPRECISEGC)
 808                     objecttemps.addPtr(tmp);
 809                 else
 810                     objecttemps.addPrim(tmp);
 811             }
 812             /* Create temp to hold revert table */
 813             if (lb.getHasAtomic()) {
 814                 TempDescriptor reverttmp=new TempDescriptor("revertlist", typeutil.getClass(TypeUtil.ObjectClass));
 815                 if (GENERATEPRECISEGC)
 816                     objecttemps.addPtr(reverttmp);
 817                 else
 818                     objecttemps.addPrim(reverttmp);
 819                 reverttable.put(lb, reverttmp);
 820             }
 821         }
 822     }
 823
 824     /** This method outputs the following information about classes
 825      * and arrays:
 826      * (1) For classes, what are the locations of pointers.
 827      * (2) For arrays, does the array contain pointers or primitives.
 828      * (3) For classes, does the class contain flags.
 829      */
 830
 831     private void generateLayoutStructs(PrintWriter output) {
 832         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 833         while(it.hasNext()) {
 834             ClassDescriptor cn=(ClassDescriptor)it.next();
 835             output.println("unsigned int "+cn.getSafeSymbol()+"_pointers[]={");
 836             Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
 837             int count=0;
 838             while(allit.hasNext()) {
 839                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 840                 TypeDescriptor type=fd.getType();
 841                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 842                     continue;
 843                 if (type.isPtr())
 844                     count++;
 845             }
 846             output.print(count);
 847             allit=cn.getFieldTable().getAllDescriptorsIterator();
 848             while(allit.hasNext()) {
 849                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 850                 TypeDescriptor type=fd.getType();
 851                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 852                     continue;
 853                 if (type.isPtr()) {
 854                     output.println(",");
 855                     output.print("((unsigned int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
 856                 }
 857             }
 858             output.println("};");
 859         }
 860         output.println("unsigned int * pointerarray[]={");
 861         boolean needcomma=false;
 862         for(int i=0;i<state.numClasses();i++) {
 863             ClassDescriptor cn=cdarray[i];
 864             if (needcomma)
 865                 output.println(",");
 866             needcomma=true;
 867             output.print(cn.getSafeSymbol()+"_pointers");
 868         }
 869
 870         for(int i=0;i<state.numArrays();i++) {
 871             if (needcomma)
 872                 output.println(", ");
 873             TypeDescriptor tdelement=arraytable[i].dereference();
 874             if (tdelement.isArray()||tdelement.isClass())
 875                 output.print("((unsigned int *)1)");
 876             else
 877                 output.print("0");
 878             needcomma=true;
 879         }
 880
 881         output.println("};");
 882         needcomma=false;
 883         output.println("int hasflags[]={");
 884         for(int i=0;i<state.numClasses();i++) {
 885             ClassDescriptor cn=cdarray[i];
 886             if (needcomma)
 887                 output.println(", ");
 888             needcomma=true;
 889             if (cn.hasFlags())
 890                 output.print("1");
 891             else
 892                 output.print("0");
 893         }
 894         output.println("};");
 895     }
 896
 897     /** Print out table to give us supertypes */
 898     private void generateSuperTypeTable(PrintWriter output) {
 899         output.println("int supertypes[]={");
 900         boolean needcomma=false;
 901         for(int i=0;i<state.numClasses();i++) {
 902             ClassDescriptor cn=cdarray[i];
 903             if (needcomma)
 904                 output.println(",");
 905             needcomma=true;
 906             if (cn.getSuperDesc()!=null) {
 907                 ClassDescriptor cdsuper=cn.getSuperDesc();
 908                 output.print(cdsuper.getId());
 909             } else
 910                 output.print("-1");
 911         }
 912         output.println("};");
 913     }
 914
 915     /** Force consistent field ordering between inherited classes. */
 916
 917     private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
 918
 919         ClassDescriptor sp=cn.getSuperDesc();
 920         if (sp!=null)
 921             printClassStruct(sp, classdefout);
 922
 923         if (!fieldorder.containsKey(cn)) {
 924             Vector fields=new Vector();
 925             fieldorder.put(cn,fields);
 926             Iterator fieldit=cn.getFields();
 927             while(fieldit.hasNext()) {
 928                 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
 929                 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
 930                     fields.add(fd);
 931             }
 932         }
 933         Vector fields=(Vector)fieldorder.get(cn);
 934
 935         for(int i=0;i<fields.size();i++) {
 936             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 937             if (fd.getType().isClass()||fd.getType().isArray())
 938                 classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
 939             else
 940                 classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
 941         }
 942     }
 943
 944
 945     /* Map flags to integers consistently between inherited
 946      * classes. */
 947
 948     private void mapFlags(ClassDescriptor cn) {
 949         ClassDescriptor sp=cn.getSuperDesc();
 950         if (sp!=null)
 951             mapFlags(sp);
 952         int max=0;
 953         if (!flagorder.containsKey(cn)) {
 954             Hashtable flags=new Hashtable();
 955             flagorder.put(cn,flags);
 956             if (sp!=null) {
 957                 Hashtable superflags=(Hashtable)flagorder.get(sp);
 958                 Iterator superflagit=superflags.keySet().iterator();
 959                 while(superflagit.hasNext()) {
 960                     FlagDescriptor fd=(FlagDescriptor)superflagit.next();
 961                     Integer number=(Integer)superflags.get(fd);
 962                     flags.put(fd, number);
 963                     if ((number.intValue()+1)>max)
 964                         max=number.intValue()+1;
 965                 }
 966             }
 967
 968             Iterator flagit=cn.getFlags();
 969             while(flagit.hasNext()) {
 970                 FlagDescriptor fd=(FlagDescriptor)flagit.next();
 971                 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
 972                     flags.put(fd, new Integer(max++));
 973             }
 974         }
 975     }
 976
 977
 978     /** This function outputs (1) structures that parameters are
 979      * passed in (when PRECISE GC is enabled) and (2) function
 980      * prototypes for the methods */
 981
 982     private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
 983         /* Output class structure */
 984         classdefout.println("struct "+cn.getSafeSymbol()+" {");
 985         classdefout.println("  int type;");
 986         if (state.THREAD) {
 987             classdefout.println("  pthread_t tid;");
 988             classdefout.println("  void * lockentry;");
 989             classdefout.println("  int lockcount;");
 990         }
 991
 992         if (state.TASK) {
 993             classdefout.println("  int flag;");
 994             classdefout.println("  void * flagptr;");
 995             if (state.OPTIONAL){
 996                 classdefout.println("  int numfses;");
 997                 classdefout.println("  int * fses;");
 998             }
 999         }
1000         printClassStruct(cn, classdefout);
1001         classdefout.println("};\n");
1002
1003         if (state.DSM) {
1004             /* Cycle through LocalityBindings */
1005             HashSet<MethodDescriptor> nativemethods=new HashSet<MethodDescriptor>();
1006             Set<LocalityBinding> lbset=locality.getClassBindings(cn);
1007             if (lbset!=null) {
1008                 for(Iterator<LocalityBinding> lbit=lbset.iterator();lbit.hasNext();) {
1009                     LocalityBinding lb=lbit.next();
1010                     MethodDescriptor md=lb.getMethod();
1011                     if (md.getModifiers().isNative()) {
1012                         //make sure we only print a native method once
1013                         if (nativemethods.contains(md)) {
1014                             FlatMethod fm=state.getMethodFlat(md);
1015                             generateTempStructs(fm, lb);
1016                             continue;
1017                         } else
1018                             nativemethods.add(md);
1019                     }
1020                     generateMethod(cn, md, lb, headersout, output);
1021                 }
1022             }
1023             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1024                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1025                 if (md.getModifiers().isNative()&&!nativemethods.contains(md)) {
1026                     //Need to build param structure for library code
1027                     FlatMethod fm=state.getMethodFlat(md);
1028                     generateTempStructs(fm, null);
1029                     generateMethodParam(cn, md, null, output);
1030                 }
1031             }
1032
1033         } else
1034             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1035                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1036                 generateMethod(cn, md, null, headersout, output);
1037             }
1038     }
1039
1040     private void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter output) {
1041         /* Output parameter structure */
1042         if (GENERATEPRECISEGC) {
1043             ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1044             if (state.DSM&&lb!=null)
1045                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1046             else
1047                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1048             output.println("  int size;");
1049             output.println("  void * next;");
1050             for(int i=0;i<objectparams.numPointers();i++) {
1051                 TempDescriptor temp=objectparams.getPointer(i);
1052                 output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1053             }
1054             output.println("};\n");
1055         }
1056     }
1057
1058
1059     private void generateMethod(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter headersout, PrintWriter output) {
1060         FlatMethod fm=state.getMethodFlat(md);
1061         generateTempStructs(fm, lb);
1062
1063         ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1064         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md);
1065
1066         generateMethodParam(cn, md, lb, output);
1067
1068         /* Output temp structure */
1069         if (GENERATEPRECISEGC) {
1070             if (state.DSM)
1071                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1072             else
1073                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1074             output.println("  int size;");
1075             output.println("  void * next;");
1076             for(int i=0;i<objecttemps.numPointers();i++) {
1077                 TempDescriptor temp=objecttemps.getPointer(i);
1078                 if (temp.getType().isNull())
1079                     output.println("  void * "+temp.getSafeSymbol()+";");
1080                 else
1081                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1082             }
1083             output.println("};\n");
1084         }
1085
1086         /********* Output method declaration ***********/
1087
1088         /* First the return type */
1089         if (md.getReturnType()!=null) {
1090             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1091                 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1092             else
1093                 headersout.print(md.getReturnType().getSafeSymbol()+" ");
1094         } else
1095             //catch the constructor case
1096             headersout.print("void ");
1097
1098         /* Next the method name */
1099         if (state.DSM) {
1100             headersout.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1101         } else
1102             headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1103
1104         boolean printcomma=false;
1105         if (GENERATEPRECISEGC) {
1106             if (state.DSM) {
1107                 headersout.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1108             } else
1109                 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1110             printcomma=true;
1111         }
1112
1113         if (state.DSM&&lb.isAtomic()) {
1114             if (printcomma)
1115                 headersout.print(", ");
1116             headersout.print("transrecord_t * trans");
1117             printcomma=true;
1118         }
1119
1120         /*  Output parameter list*/
1121         for(int i=0;i<objectparams.numPrimitives();i++) {
1122             TempDescriptor temp=objectparams.getPrimitive(i);
1123             if (printcomma)
1124                 headersout.print(", ");
1125             printcomma=true;
1126             if (temp.getType().isClass()||temp.getType().isArray())
1127                 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1128             else
1129                 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1130         }
1131         headersout.println(");\n");
1132     }
1133
1134
1135     /** This function outputs (1) structures that parameters are
1136      * passed in (when PRECISE GC is enabled) and (2) function
1137      * prototypes for the tasks */
1138
1139     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
1140         /* Cycle through tasks */
1141         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
1142
1143         while(taskit.hasNext()) {
1144             /* Classify parameters */
1145             TaskDescriptor task=(TaskDescriptor)taskit.next();
1146             FlatMethod fm=state.getMethodFlat(task);
1147             generateTempStructs(fm, null);
1148
1149             ParamsObject objectparams=(ParamsObject) paramstable.get(task);
1150             TempObject objecttemps=(TempObject) tempstable.get(task);
1151
1152             /* Output parameter structure */
1153             if (GENERATEPRECISEGC) {
1154                 output.println("struct "+task.getSafeSymbol()+"_params {");
1155
1156                 output.println("  int size;");
1157                 output.println("  void * next;");
1158                 for(int i=0;i<objectparams.numPointers();i++) {
1159                     TempDescriptor temp=objectparams.getPointer(i);
1160                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1161                 }
1162
1163                 output.println("};\n");
1164                 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
1165                     maxtaskparams=objectparams.numPointers()+fm.numTags();
1166                 }
1167             }
1168
1169             /* Output temp structure */
1170             if (GENERATEPRECISEGC) {
1171                 output.println("struct "+task.getSafeSymbol()+"_locals {");
1172                 output.println("  int size;");
1173                 output.println("  void * next;");
1174                 for(int i=0;i<objecttemps.numPointers();i++) {
1175                     TempDescriptor temp=objecttemps.getPointer(i);
1176                     if (temp.getType().isNull())
1177                         output.println("  void * "+temp.getSafeSymbol()+";");
1178                     else if(temp.getType().isTag())
1179                         output.println("  struct "+
1180                                        (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1181                     else
1182                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1183                 }
1184                 output.println("};\n");
1185             }
1186
1187             /* Output task declaration */
1188             headersout.print("void " + task.getSafeSymbol()+"(");
1189
1190             boolean printcomma=false;
1191             if (GENERATEPRECISEGC) {
1192                 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1193             } else
1194                 headersout.print("void * parameterarray[]");
1195             headersout.println(");\n");
1196         }
1197     }
1198
1199     /***** Generate code for FlatMethod fm. *****/
1200
1201     private void generateFlatMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
1202         MethodDescriptor md=fm.getMethod();
1203
1204         TaskDescriptor task=fm.getTask();
1205
1206         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1207
1208         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:md!=null?md:task);
1209         generateHeader(fm, lb, md!=null?md:task,output);
1210         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1211         if (state.DSM&&lb.getHasAtomic()) {
1212             output.println("transrecord_t * trans;");
1213         }
1214
1215         if (GENERATEPRECISEGC) {
1216             if (md!=null&&state.DSM)
1217                 output.print("   struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1218             else if (md!=null&&!state.DSM)
1219                 output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1220             else
1221                 output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
1222
1223             output.print(objecttemp.numPointers()+",");
1224             output.print(paramsprefix);
1225             for(int j=0;j<objecttemp.numPointers();j++)
1226                 output.print(", NULL");
1227             output.println("};");
1228         }
1229
1230         for(int i=0;i<objecttemp.numPrimitives();i++) {
1231             TempDescriptor td=objecttemp.getPrimitive(i);
1232             TypeDescriptor type=td.getType();
1233             if (type.isNull())
1234                 output.println("   void * "+td.getSafeSymbol()+";");
1235             else if (type.isClass()||type.isArray())
1236                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
1237             else
1238                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
1239         }
1240
1241         /* Assign labels to FlatNode's if necessary.*/
1242
1243         Hashtable<FlatNode, Integer> nodetolabel=assignLabels(fm);
1244
1245         /* Check to see if we need to do a GC if this is a
1246          * multi-threaded program...*/
1247
1248         if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1249             output.println("checkcollect(&"+localsprefix+");");
1250         }
1251
1252         /* Do the actual code generation */
1253         FlatNode current_node=null;
1254         HashSet tovisit=new HashSet();
1255         HashSet visited=new HashSet();
1256         tovisit.add(fm.getNext(0));
1257         while(current_node!=null||!tovisit.isEmpty()) {
1258             if (current_node==null) {
1259                 current_node=(FlatNode)tovisit.iterator().next();
1260                 tovisit.remove(current_node);
1261             }
1262             visited.add(current_node);
1263             if (nodetolabel.containsKey(current_node))
1264                 output.println("L"+nodetolabel.get(current_node)+":");
1265             if (state.INSTRUCTIONFAILURE) {
1266                 if (state.THREAD||state.DSM) {
1267                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1268                 }
1269                 else
1270                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1271             }
1272             if (current_node.numNext()==0) {
1273                 output.print("   ");
1274                 generateFlatNode(fm, lb, current_node, output);
1275                 if (current_node.kind()!=FKind.FlatReturnNode) {
1276                     output.println("   return;");
1277                 }
1278                 current_node=null;
1279             } else if(current_node.numNext()==1) {
1280                 output.print("   ");
1281                 generateFlatNode(fm, lb, current_node, output);
1282                 FlatNode nextnode=current_node.getNext(0);
1283                 if (visited.contains(nextnode)) {
1284                     output.println("goto L"+nodetolabel.get(nextnode)+";");
1285                     current_node=null;
1286                 } else
1287                     current_node=nextnode;
1288             } else if (current_node.numNext()==2) {
1289                 /* Branch */
1290                 output.print("   ");
1291                 generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1292                 if (!visited.contains(current_node.getNext(1)))
1293                     tovisit.add(current_node.getNext(1));
1294                 if (visited.contains(current_node.getNext(0))) {
1295                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1296                     current_node=null;
1297                 } else
1298                     current_node=current_node.getNext(0);
1299             } else throw new Error();
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                     output.println("/* prefetch */");
1435                     output.println("; /* empty statement to avoid compiler error */");
1436                     Iterator it = fpn.hspp.iterator();
1437                     String oidlist = new String();
1438                     while(it.hasNext()) {
1439                             PrefetchPair pp = (PrefetchPair) it.next();
1440                             Integer statusbase = locality.getNodePreTempInfo(lb,fpn).get(pp.base);
1441                             /* Find prefetches that can generate oid */
1442                             if(statusbase == LocalityAnalysis.GLOBAL) {
1443                                     if(locality.getAtomic(lb).get(fpn).intValue()>0) { /* Inside transaction */
1444                                             generateInsideTransCode(fm,lb,output, pp,oids,fieldoffset,endoffset,tuplecount);
1445                                     } else {/* Outside Transaction */
1446                                             generateOutsideTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1447                                     }
1448                                     tuplecount++;
1449                             } else if(statusbase == LocalityAnalysis.LOCAL) {
1450                                     generateLocalTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1451                             } else {
1452                                     continue;
1453                             }
1454                     }
1455
1456                     /*Create C code for numtuples */
1457                     output.println("   int numtuples_" + count + " = " + tuplecount + ";");
1458
1459                     /*Create C code for oid array */
1460                     output.print("   unsigned int oidarray_" + count + "[] = {");
1461                     boolean needcomma=false;
1462                     it = oids.iterator();
1463                     while(it.hasNext()) {
1464                             if (needcomma)
1465                                     output.print(", ");
1466                             output.print(it.next());
1467                             needcomma=true;
1468                     }
1469                     output.println("};");
1470
1471                     /*Create C code for endoffset values */
1472                     output.print("   unsigned short endoffsetarry_" + count +"[] = {");
1473                     needcomma=false;
1474                     it = endoffset.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 Field Offset Values */
1484                     output.print("   short fieldarry_" + count +"[] = {");
1485                     needcomma=false;
1486                     it = fieldoffset.iterator();
1487                     while(it.hasNext()) {
1488                             if (needcomma)
1489                                     output.print(", ");
1490                             output.print(it.next());
1491                             needcomma=true;
1492                     }
1493                     output.println("};");
1494                     /* make the prefetch call to Runtime */
1495                     output.println("   prefetch((int) numtuples_"+count+ ", oidarray_"+count+ ", endoffsetarry_"+
1496                                     count+", fieldarry_"+count+");");
1497                     count++;
1498             }
1499
1500             /* Free heap memory */
1501             fieldoffset = null;
1502             endoffset = null;
1503             oids = null;
1504     }
1505
1506     public void generateInsideTransCode(FlatMethod fm, LocalityBinding lb,PrintWriter output,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount){
1507             int i,j;
1508             short offsetcount = 0;
1509
1510             Object newdesc = pp.desc.get(0);
1511             if(newdesc instanceof FieldDescriptor) {
1512                     FieldDescriptor fd = (FieldDescriptor)newdesc;
1513                     String oid = new String("(unsigned int) (" +
1514                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1515                                     generateTemp(fm, pp.base, lb) + "->" + ((FieldDescriptor)fd).getSafeSymbol() +
1516                                     " : NULL)");
1517                     oids.add(oid);
1518             } else {
1519                     IndexDescriptor id = (IndexDescriptor)newdesc;
1520                     String tstlbl = new String();
1521                     for(i=0; i<id.tddesc.size(); i++) {
1522                             tstlbl += generateTemp(fm, id.getTempDescAt(i), lb) + "+";
1523                     }
1524                     tstlbl += id.offset.toString();
1525                     output.println("if ("+tstlbl+"< 0 || "+tstlbl+" >= "+
1526                                     generateTemp(fm, pp.base, lb) + "->___length___) {");
1527                     output.println("    failedboundschk();");
1528                     output.println("}");
1529                     String oid = new String("(unsigned int) (" +
1530                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1531                                     generateTemp(fm, pp.base, lb) + "[" + tstlbl + "] : NULL)");
1532                     oids.add(oid);
1533             }
1534
1535             for(i = 1; i < pp.desc.size(); i++) {
1536                     TypeDescriptor newtd;
1537                     String newfieldoffset;
1538                     Object desc = pp.getDescAt(i);
1539                     offsetcount++;
1540                     if(desc instanceof FieldDescriptor) {
1541                             Object prevdesc = pp.getDescAt(i-1);
1542                             if(prevdesc instanceof IndexDescriptor){
1543                                     if((i-1) == 0) {
1544                                             newtd = pp.base.getType();
1545                                     } else {
1546                                             //FIXME currently handles one dimensional arrays
1547                                             newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1548                                     }
1549                             } else {
1550                                     newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1551                             }
1552                             newfieldoffset = new String("(short)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1553                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1554                             fieldoffset.add(newfieldoffset);
1555                     } else {
1556                             String tstlbl = new String();
1557                             for(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1558                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), lb) + "+";
1559                             }
1560                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1561                             newfieldoffset = new String("(short)("+tstlbl+")");
1562                             fieldoffset.add(newfieldoffset);
1563                     }
1564             }
1565             if(tuplecount > 0) {
1566                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1567                     short endoffsetval = (short) tmp;
1568                     endoffset.add(endoffsetval);
1569             }else {
1570                     endoffset.add(offsetcount);
1571             }
1572     }
1573
1574     public void generateOutsideTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp, Vector oids, Vector fieldoffset, Vector endoffset, int tuplecount) {
1575             int i,j;
1576             short offsetcount = 0;
1577
1578             String oid = new String(" (unsigned int) (" + generateTemp(fm, pp.base, lb)+ ")");
1579             oids.add(oid);
1580             for(i = 0; i < pp.desc.size(); i++) {
1581                     TypeDescriptor newtd;
1582                     String newfieldoffset;
1583                     Object desc = pp.getDescAt(i);
1584                     offsetcount++;
1585                     if(desc instanceof FieldDescriptor) {
1586                             if(i == 0){
1587                                     newtd = pp.base.getType();
1588                             } else {
1589                                     Object prevdesc = pp.getDescAt(i-1);
1590                                     if(prevdesc instanceof IndexDescriptor){
1591                                             if((i-1) == 0) {
1592                                                     newtd = pp.base.getType();
1593                                             } else {
1594                                                     //FIXME currently handles one dimensional arrays
1595                                                     newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1596                                             }
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(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1606                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), 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, k;
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(k = 0; k < ((IndexDescriptor)desc).tddesc.size(); k++) {
1662                                                             indexlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(k), 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         if (state.DSM) {
2064             Integer status=locality.getNodePreTempInfo(lb,fen).get(fen.getSrc());
2065             if (status==LocalityAnalysis.GLOBAL) {
2066                 String dst=generateTemp(fm, fen.getDst(),lb);
2067
2068                 if (elementtype.isPtr()) {
2069                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2070                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
2071                 } else {
2072                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2073                 }
2074             } else if (status==LocalityAnalysis.LOCAL) {
2075                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2076             } else if (status==LocalityAnalysis.EITHER) {
2077                 //Code is reading from a null pointer
2078                 output.println("if ("+generateTemp(fm, fen.getSrc(),lb)+") {");
2079                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2080                 //This should throw a suitable null pointer error
2081                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2082             } else
2083                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2084         } else {
2085             output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2086         }
2087     }
2088
2089     private void generateFlatSetElementNode(FlatMethod fm, LocalityBinding lb, FlatSetElementNode fsen, PrintWriter output) {
2090         //TODO: need dynamic check to make sure this assignment is actually legal
2091         //Because Object[] could actually be something more specific...ie. Integer[]
2092
2093         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
2094         String type="";
2095
2096         if (elementtype.isArray()||elementtype.isClass())
2097             type="void *";
2098         else
2099             type=elementtype.getSafeSymbol()+" ";
2100
2101
2102         if (fsen.needsBoundsCheck()) {
2103             output.println("if ("+generateTemp(fm, fsen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fsen.getIndex(),lb)+" >= "+generateTemp(fm,fsen.getDst(),lb) + "->___length___)");
2104             output.println("failedboundschk();");
2105         }
2106
2107         if (state.DSM && locality.getAtomic(lb).get(fsen).intValue()>0) {
2108             Integer statussrc=locality.getNodePreTempInfo(lb,fsen).get(fsen.getSrc());
2109             Integer statusdst=locality.getNodePreTempInfo(lb,fsen).get(fsen.getDst());
2110             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2111             boolean dstglobal=statusdst==LocalityAnalysis.GLOBAL;
2112             if (dstglobal) {
2113                 output.println("*((unsigned int *)&("+generateTemp(fm,fsen.getDst(),lb)+"->___localcopy___))|=DIRTY;");
2114             }
2115             if (srcglobal) {
2116                 output.println("{");
2117                 String src=generateTemp(fm, fsen.getSrc(), lb);
2118                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2119                 output.println("((int*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]=srcoid;");
2120                 output.println("}");
2121             } else {
2122                 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2123             }
2124         } else
2125             output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2126     }
2127
2128     private void generateFlatNew(FlatMethod fm, LocalityBinding lb, FlatNew fn, PrintWriter output) {
2129         if (fn.getType().isArray()) {
2130             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
2131             if (fn.isGlobal()) {
2132                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarrayglobal(trans, "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2133             } else if (GENERATEPRECISEGC) {
2134                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2135             } else {
2136                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2137             }
2138         } else {
2139             if (fn.isGlobal()) {
2140                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newglobal(trans, "+fn.getType().getClassDesc().getId()+");");
2141             } else if (GENERATEPRECISEGC) {
2142                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
2143             } else {
2144                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
2145             }
2146         }
2147     }
2148
2149     private void generateFlatTagDeclaration(FlatMethod fm, LocalityBinding lb, FlatTagDeclaration fn, PrintWriter output) {
2150         if (GENERATEPRECISEGC) {
2151             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
2152         } else {
2153             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag("+state.getTagId(fn.getType())+");");
2154         }
2155     }
2156
2157     private void generateFlatOpNode(FlatMethod fm, LocalityBinding lb, FlatOpNode fon, PrintWriter output) {
2158         if (fon.getRight()!=null) {
2159             if (fon.getOp().getOp()==Operation.URIGHTSHIFT) {
2160                 if (fon.getLeft().getType().isLong())
2161                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned long long)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2162                 else
2163                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned int)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2164
2165             } else
2166                 output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+fon.getOp().toString()+generateTemp(fm,fon.getRight(),lb)+";");
2167         } else if (fon.getOp().getOp()==Operation.ASSIGN)
2168             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2169         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
2170             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2171         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
2172             output.println(generateTemp(fm, fon.getDest(),lb)+" = -"+generateTemp(fm, fon.getLeft(),lb)+";");
2173         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
2174             output.println(generateTemp(fm, fon.getDest(),lb)+" = !"+generateTemp(fm, fon.getLeft(),lb)+";");
2175         else if (fon.getOp().getOp()==Operation.COMP)
2176             output.println(generateTemp(fm, fon.getDest(),lb)+" = ~"+generateTemp(fm, fon.getLeft(),lb)+";");
2177         else if (fon.getOp().getOp()==Operation.ISAVAILABLE) {
2178             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+"->fses==NULL;");
2179         } else
2180             output.println(generateTemp(fm, fon.getDest(),lb)+fon.getOp().toString()+generateTemp(fm, fon.getLeft(),lb)+";");
2181     }
2182
2183     private void generateFlatCastNode(FlatMethod fm, LocalityBinding lb, FlatCastNode fcn, PrintWriter output) {
2184         /* TODO: Do type check here */
2185         if (fcn.getType().isArray()) {
2186             throw new Error();
2187         } else if (fcn.getType().isClass())
2188             output.println(generateTemp(fm,fcn.getDst(),lb)+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc(),lb)+";");
2189         else
2190             output.println(generateTemp(fm,fcn.getDst(),lb)+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc(),lb)+";");
2191     }
2192
2193     private void generateFlatLiteralNode(FlatMethod fm, LocalityBinding lb, FlatLiteralNode fln, PrintWriter output) {
2194         if (fln.getValue()==null)
2195             output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2196         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
2197             if (GENERATEPRECISEGC) {
2198                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2199             } else {
2200                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2201             }
2202         } else if (fln.getType().isBoolean()) {
2203             if (((Boolean)fln.getValue()).booleanValue())
2204                 output.println(generateTemp(fm, fln.getDst(),lb)+"=1;");
2205             else
2206                 output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2207         } else if (fln.getType().isChar()) {
2208             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
2209             output.println(generateTemp(fm, fln.getDst(),lb)+"='"+st+"';");
2210         } else if (fln.getType().isLong()) {
2211             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+"LL;");
2212         } else
2213             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+";");
2214     }
2215
2216     private void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
2217         if (frn.getReturnTemp()!=null) {
2218             if (frn.getReturnTemp().getType().isPtr())
2219                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2220             else
2221                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2222         } else
2223             output.println("return;");
2224     }
2225
2226     private void generateFlatCondBranch(FlatMethod fm, LocalityBinding lb, FlatCondBranch fcb, String label, PrintWriter output) {
2227         output.println("if (!"+generateTemp(fm, fcb.getTest(),lb)+") goto "+label+";");
2228     }
2229
2230     /** This method generates header information for the method or
2231      * task referenced by the Descriptor des. */
2232
2233     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
2234         /* Print header */
2235         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
2236         MethodDescriptor md=null;
2237         TaskDescriptor task=null;
2238         if (des instanceof MethodDescriptor)
2239             md=(MethodDescriptor) des;
2240         else
2241             task=(TaskDescriptor) des;
2242
2243         ClassDescriptor cn=md!=null?md.getClassDesc():null;
2244
2245         if (md!=null&&md.getReturnType()!=null) {
2246             if (md.getReturnType().isClass()||md.getReturnType().isArray())
2247                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
2248             else
2249                 output.print(md.getReturnType().getSafeSymbol()+" ");
2250         } else
2251             //catch the constructor case
2252             output.print("void ");
2253         if (md!=null) {
2254             if (state.DSM) {
2255                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2256             } else
2257                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2258         } else
2259             output.print(task.getSafeSymbol()+"(");
2260
2261         boolean printcomma=false;
2262         if (GENERATEPRECISEGC) {
2263             if (md!=null) {
2264                 if (state.DSM) {
2265                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2266                 } else
2267                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2268             } else
2269                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
2270             printcomma=true;
2271         }
2272
2273         if (state.DSM&&lb.isAtomic()) {
2274             if (printcomma)
2275                 output.print(", ");
2276             output.print("transrecord_t * trans");
2277             printcomma=true;
2278         }
2279
2280         if (md!=null) {
2281             /* Method */
2282             for(int i=0;i<objectparams.numPrimitives();i++) {
2283                 TempDescriptor temp=objectparams.getPrimitive(i);
2284                 if (printcomma)
2285                     output.print(", ");
2286                 printcomma=true;
2287                 if (temp.getType().isClass()||temp.getType().isArray())
2288                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
2289                 else
2290                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
2291             }
2292             output.println(") {");
2293         } else if (!GENERATEPRECISEGC) {
2294             /* Imprecise Task */
2295             output.println("void * parameterarray[]) {");
2296             /* Unpack variables */
2297             for(int i=0;i<objectparams.numPrimitives();i++) {
2298                 TempDescriptor temp=objectparams.getPrimitive(i);
2299                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
2300             }
2301             for(int i=0;i<fm.numTags();i++) {
2302                 TempDescriptor temp=fm.getTag(i);
2303                 int offset=i+objectparams.numPrimitives();
2304                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
2305             }
2306
2307             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
2308                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
2309         } else output.println(") {");
2310     }
2311
2312     public void generateFlatFlagActionNode(FlatMethod fm, LocalityBinding lb, FlatFlagActionNode ffan, PrintWriter output) {
2313         output.println("/* FlatFlagActionNode */");
2314
2315
2316         /* Process tag changes */
2317         Relation tagsettable=new Relation();
2318         Relation tagcleartable=new Relation();
2319
2320         Iterator tagsit=ffan.getTempTagPairs();
2321         while (tagsit.hasNext()) {
2322             TempTagPair ttp=(TempTagPair) tagsit.next();
2323             TempDescriptor objtmp=ttp.getTemp();
2324             TagDescriptor tag=ttp.getTag();
2325             TempDescriptor tagtmp=ttp.getTagTemp();
2326             boolean tagstatus=ffan.getTagChange(ttp);
2327             if (tagstatus) {
2328                 tagsettable.put(objtmp, tagtmp);
2329             } else {
2330                 tagcleartable.put(objtmp, tagtmp);
2331             }
2332         }
2333
2334
2335         Hashtable flagandtable=new Hashtable();
2336         Hashtable flagortable=new Hashtable();
2337
2338         /* Process flag changes */
2339         Iterator flagsit=ffan.getTempFlagPairs();
2340         while(flagsit.hasNext()) {
2341             TempFlagPair tfp=(TempFlagPair)flagsit.next();
2342             TempDescriptor temp=tfp.getTemp();
2343             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
2344             FlagDescriptor flag=tfp.getFlag();
2345             if (flag==null) {
2346                 //Newly allocate objects that don't set any flags case
2347                 if (flagortable.containsKey(temp)) {
2348                     throw new Error();
2349                 }
2350                 int mask=0;
2351                 flagortable.put(temp,new Integer(mask));
2352             } else {
2353                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
2354                 boolean flagstatus=ffan.getFlagChange(tfp);
2355                 if (flagstatus) {
2356                     int mask=0;
2357                     if (flagortable.containsKey(temp)) {
2358                         mask=((Integer)flagortable.get(temp)).intValue();
2359                     }
2360                     mask|=flagid;
2361                     flagortable.put(temp,new Integer(mask));
2362                 } else {
2363                     int mask=0xFFFFFFFF;
2364                     if (flagandtable.containsKey(temp)) {
2365                         mask=((Integer)flagandtable.get(temp)).intValue();
2366                     }
2367                     mask&=(0xFFFFFFFF^flagid);
2368                     flagandtable.put(temp,new Integer(mask));
2369                 }
2370             }
2371         }
2372
2373
2374         HashSet flagtagset=new HashSet();
2375         flagtagset.addAll(flagortable.keySet());
2376         flagtagset.addAll(flagandtable.keySet());
2377         flagtagset.addAll(tagsettable.keySet());
2378         flagtagset.addAll(tagcleartable.keySet());
2379
2380         Iterator ftit=flagtagset.iterator();
2381         while(ftit.hasNext()) {
2382             TempDescriptor temp=(TempDescriptor)ftit.next();
2383
2384
2385             Set tagtmps=tagcleartable.get(temp);
2386             if (tagtmps!=null) {
2387                 Iterator tagit=tagtmps.iterator();
2388                 while(tagit.hasNext()) {
2389                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2390                     if (GENERATEPRECISEGC)
2391                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2392                     else
2393                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2394                 }
2395             }
2396
2397             tagtmps=tagsettable.get(temp);
2398             if (tagtmps!=null) {
2399                 Iterator tagit=tagtmps.iterator();
2400                 while(tagit.hasNext()) {
2401                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2402                     if (GENERATEPRECISEGC)
2403                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2404                     else
2405                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp, lb)+", "+generateTemp(fm,tagtmp, lb)+");");
2406                 }
2407             }
2408
2409             int ormask=0;
2410             int andmask=0xFFFFFFF;
2411
2412             if (flagortable.containsKey(temp))
2413                 ormask=((Integer)flagortable.get(temp)).intValue();
2414             if (flagandtable.containsKey(temp))
2415                 andmask=((Integer)flagandtable.get(temp)).intValue();
2416             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2417                 output.println("flagorandinit("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2418             } else {
2419                 output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2420             }
2421         }
2422     }
2423
2424     void generateOptionalHeader(PrintWriter headers) {
2425
2426          //GENERATE HEADERS
2427          headers.println("#include \"task.h\"\n\n");
2428          headers.println("#ifndef _OPTIONAL_STRUCT_");
2429          headers.println("#define _OPTIONAL_STRUCT_");
2430
2431          //STRUCT PREDICATEMEMBER
2432          headers.println("struct predicatemember{");
2433          headers.println("int type;");
2434          headers.println("int numdnfterms;");
2435          headers.println("int * flags;");
2436          headers.println("int numtags;");
2437          headers.println("int * tags;\n};\n\n");
2438
2439          //STRUCT OPTIONALTASKDESCRIPTOR
2440          headers.println("struct optionaltaskdescriptor{");
2441          headers.println("struct taskdescriptor * task;");
2442          headers.println("int index;");
2443          headers.println("int numenterflags;");
2444          headers.println("int * enterflags;");
2445          headers.println("int numpredicatemembers;");
2446          headers.println("struct predicatemember ** predicatememberarray;");
2447          headers.println("};\n\n");
2448
2449          //STRUCT TASKFAILURE
2450          headers.println("struct taskfailure {");
2451          headers.println("struct taskdescriptor * task;");
2452          headers.println("int index;");
2453          headers.println("int numoptionaltaskdescriptors;");
2454          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2455
2456          //STRUCT FSANALYSISWRAPPER
2457          headers.println("struct fsanalysiswrapper{");
2458          headers.println("int  flags;");
2459          headers.println("int numtags;");
2460          headers.println("int * tags;");
2461          headers.println("int numtaskfailures;");
2462          headers.println("struct taskfailure ** taskfailurearray;");
2463          headers.println("int numoptionaltaskdescriptors;");
2464          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2465
2466          //STRUCT CLASSANALYSISWRAPPER
2467          headers.println("struct classanalysiswrapper{");
2468          headers.println("int type;");
2469          headers.println("int numotd;");
2470          headers.println("struct optionaltaskdescriptor ** otdarray;");
2471          headers.println("int numfsanalysiswrappers;");
2472          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};");
2473
2474          headers.println("extern struct classanalysiswrapper * classanalysiswrapperarray[];");
2475
2476          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2477          while(taskit.hasNext()) {
2478              TaskDescriptor td=(TaskDescriptor)taskit.next();
2479              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2480          }
2481
2482     }
2483
2484     //CHECK OVER THIS -- THERE COULD BE SOME ERRORS HERE
2485     int generateOptionalPredicate(Predicate predicate, OptionalTaskDescriptor otd, ClassDescriptor cdtemp, PrintWriter output) {
2486         int predicateindex = 0;
2487         //iterate through the classes concerned by the predicate
2488         Set c_vard = predicate.vardescriptors;
2489         Hashtable<TempDescriptor, Integer> slotnumber=new Hashtable<TempDescriptor, Integer>();
2490         int current_slot=0;
2491
2492         for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2493             VarDescriptor vard = (VarDescriptor)vard_it.next();
2494             TypeDescriptor typed = vard.getType();
2495
2496             //generate for flags
2497             HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2498             output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2499             int numberterms=0;
2500             if (fen_hashset!=null){
2501                 for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2502                     FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2503                     if (fen!=null) {
2504                         DNFFlag dflag=fen.getDNF();
2505                         numberterms+=dflag.size();
2506
2507                         Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2508
2509                         for(int j=0;j<dflag.size();j++) {
2510                             if (j!=0)
2511                                 output.println(",");
2512                             Vector term=dflag.get(j);
2513                             int andmask=0;
2514                             int checkmask=0;
2515                             for(int k=0;k<term.size();k++) {
2516                                 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2517                                 FlagDescriptor fd=dfa.getFlag();
2518                                 boolean negated=dfa.getNegated();
2519                                 int flagid=1<<((Integer)flags.get(fd)).intValue();
2520                                 andmask|=flagid;
2521                                 if (!negated)
2522                                     checkmask|=flagid;
2523                             }
2524                             output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2525                         }
2526                     }
2527                 }
2528             }
2529             output.println("};\n");
2530
2531             //generate for tags
2532             TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2533             output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2534             int numtags = 0;
2535             if (tagel!=null){
2536                 for(int j=0;j<tagel.numTags();j++) {
2537                     if (j!=0)
2538                         output.println(",");
2539                     TempDescriptor tmp=tagel.getTemp(j);
2540                     if (!slotnumber.containsKey(tmp)) {
2541                         Integer slotint=new Integer(current_slot++);
2542                         slotnumber.put(tmp,slotint);
2543                     }
2544                     int slot=slotnumber.get(tmp).intValue();
2545                     output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
2546                 }
2547                 numtags = tagel.numTags();
2548             }
2549             output.println("};");
2550
2551             //store the result into a predicatemember struct
2552             output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2553             output.println("/*type*/"+typed.getClassDesc().getId()+",");
2554             output.println("/* number of dnf terms */"+numberterms+",");
2555             output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2556             output.println("/* number of tag */"+numtags+",");
2557             output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2558             output.println("};\n");
2559             predicateindex++;
2560         }
2561
2562
2563         //generate an array that stores the entire predicate
2564         output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2565         for( int j = 0; j<predicateindex; j++){
2566             if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2567             else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2568         }
2569         output.println("};\n");
2570         return predicateindex;
2571     }
2572
2573
2574      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, Set<OptionalTaskDescriptor>>> safeexecution, Hashtable optionaltaskdescriptors) {
2575          generateOptionalHeader(headers);
2576          //GENERATE STRUCTS
2577          output.println("#include \"optionalstruct.h\"\n\n");
2578          output.println("#include \"stdlib.h\"\n");
2579
2580          HashSet processedcd = new HashSet();
2581          int maxotd=0;
2582          Enumeration e = safeexecution.keys();
2583          while (e.hasMoreElements()) {
2584              int numotd=0;
2585              //get the class
2586              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2587              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2588
2589              //Generate the struct of optionals
2590              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2591              numotd = c_otd.size();
2592              if(maxotd<numotd) maxotd = numotd;
2593              if( !c_otd.isEmpty() ){
2594                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2595                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2596
2597                      //generate the int arrays for the predicate
2598                      Predicate predicate = otd.predicate;
2599                      int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
2600                      TreeSet<Integer> fsset=new TreeSet<Integer>();
2601                      //iterate through possible FSes corresponding to
2602                      //the state when entering
2603
2604                      for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext();){
2605                          FlagState fs = (FlagState)fses.next();
2606                          int flagid=0;
2607                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2608                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2609                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2610                              flagid|=id;
2611                          }
2612                          fsset.add(new Integer(flagid));
2613                          //tag information not needed because tag
2614                          //changes are not tolerated.
2615                      }
2616
2617                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2618                      boolean needcomma=false;
2619                      for(Iterator<Integer> it=fsset.iterator();it.hasNext();) {
2620                          if(needcomma)
2621                              output.print(", ");
2622                          output.println(it.next());
2623                      }
2624
2625                      output.println("};\n");
2626
2627
2628                      //generate optionaltaskdescriptor that actually
2629                      //includes exit fses, predicate and the task
2630                      //concerned
2631                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2632                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2633                      output.println("/*index*/"+otd.getIndex()+",");
2634                      output.println("/*number of enter flags*/"+fsset.size()+",");
2635                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2636                      output.println("/*number of members */"+predicateindex+",");
2637                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2638                      output.println("};\n");
2639                  }
2640              } else
2641                  continue;
2642              // if there are no optionals, there is no need to build the rest of the struct
2643
2644              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2645              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2646              if( !c_otd.isEmpty() ){
2647                  boolean needcomma=false;
2648                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2649                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2650                      if(needcomma)
2651                          output.println(",");
2652                      needcomma=true;
2653                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2654                  }
2655              }
2656              output.println("};\n");
2657
2658              //get all the possible flagstates reachable by an object
2659              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2660              int fscounter = 0;
2661              TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
2662              fsts.addAll(hashtbtemp.keySet());
2663              for(Iterator fsit=fsts.iterator();fsit.hasNext();) {
2664                  FlagState fs = (FlagState)fsit.next();
2665                  fscounter++;
2666
2667                  //get the set of OptionalTaskDescriptors corresponding
2668                  HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
2669                  //iterate through the OptionalTaskDescriptors and
2670                  //store the pointers to the optionals struct (see on
2671                  //top) into an array
2672
2673                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2674                  for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext();){
2675                      OptionalTaskDescriptor mm = mos.next();
2676                      if(!mos.hasNext())
2677                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2678                      else
2679                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2680                  }
2681
2682                  output.println("};\n");
2683
2684                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2685
2686                  int flagid=0;
2687                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2688                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2689                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2690                      flagid|=id;
2691                  }
2692
2693                  //process tag information
2694
2695                  int tagcounter = 0;
2696                  boolean first = true;
2697                  Enumeration tag_enum = fs.getTags();
2698                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2699                  while(tag_enum.hasMoreElements()){
2700                      tagcounter++;
2701                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2702                      if(first==true)
2703                          first = false;
2704                      else
2705                          output.println(", ");
2706                      output.println("/*tagid*/"+state.getTagId(tagd));
2707                  }
2708                  output.println("};");
2709
2710                  Set<TaskIndex> tiset=sa.getTaskIndex(fs);
2711                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2712                      TaskIndex ti=itti.next();
2713                      if (ti.isRuntime())
2714                          continue;
2715
2716                      Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
2717
2718                      output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
2719                      boolean needcomma=false;
2720                      for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator();otdit.hasNext();) {
2721                          OptionalTaskDescriptor otd=otdit.next();
2722                          if(needcomma)
2723                              output.print(", ");
2724                          needcomma=true;
2725                          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2726                      }
2727                      output.println("};");
2728
2729                      output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
2730                      output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
2731                      output.print(ti.getIndex()+", ");
2732                      output.print(otdset.size()+", ");
2733                      output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
2734                      output.println("};");
2735                  }
2736
2737                  tiset=sa.getTaskIndex(fs);
2738                  boolean needcomma=false;
2739                  int runtimeti=0;
2740                  output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2741                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2742                      TaskIndex ti=itti.next();
2743                      if (ti.isRuntime()) {
2744                          runtimeti++;
2745                          continue;
2746                      }
2747                      if (needcomma)
2748                          output.print(", ");
2749                      needcomma=true;
2750                      output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
2751                  }
2752                  output.println("};\n");
2753
2754                  //Store the result in fsanalysiswrapper
2755
2756                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2757                  output.println("/*flag*/"+flagid+",");
2758                  output.println("/* number of tags*/"+tagcounter+",");
2759                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2760                  output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
2761                  output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2762                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2763                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2764                  output.println("};\n");
2765
2766              }
2767
2768              //Build the array of fsanalysiswrappers
2769              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2770              boolean needcomma=false;
2771              for(int i = 0; i<fscounter; i++){
2772                  if (needcomma) output.print(",");
2773                  output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
2774                  needcomma=true;
2775              }
2776              output.println("};");
2777
2778              //Build the classanalysiswrapper referring to the previous array
2779              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2780              output.println("/*type*/"+cdtemp.getId()+",");
2781              output.println("/*numotd*/"+numotd+",");
2782              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2783              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2784              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2785              processedcd.add(cdtemp);
2786          }
2787
2788          //build an array containing every classes for which code has been build
2789          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2790          for(int i=0;i<state.numClasses();i++) {
2791              ClassDescriptor cn=cdarray[i];
2792              if (i>0)
2793                  output.print(", ");
2794              if (processedcd.contains(cn))
2795                  output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
2796              else
2797                  output.print("NULL");
2798          }
2799          output.println("};");
2800
2801          output.println("#define MAXOTD "+maxotd);
2802          headers.println("#endif");
2803      }
2804
2805     public List<OptionalTaskDescriptor> ordertd(Set<OptionalTaskDescriptor> otdset) {
2806         Relation r=new Relation();
2807         for(Iterator<OptionalTaskDescriptor>otdit=otdset.iterator();otdit.hasNext();) {
2808             OptionalTaskDescriptor otd=otdit.next();
2809             TaskIndex ti=new TaskIndex(otd.td, otd.getIndex());
2810             r.put(ti, otd);
2811         }
2812
2813         LinkedList<OptionalTaskDescriptor> l=new LinkedList<OptionalTaskDescriptor>();
2814         for(Iterator it=r.keySet().iterator();it.hasNext();) {
2815             Set s=r.get(it.next());
2816             for(Iterator it2=s.iterator();it2.hasNext();) {
2817                 OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
2818                 l.add(otd);
2819             }
2820         }
2821
2822         return l;
2823     }
2824 }
2825
2826
2827
2828
2829
2830