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
1302         output.println("}\n\n");
1303     }
1304
1305     /** This method assigns labels to FlatNodes */
1306
1307     private Hashtable<FlatNode, Integer> assignLabels(FlatMethod fm) {
1308         HashSet tovisit=new HashSet();
1309         HashSet visited=new HashSet();
1310         int labelindex=0;
1311         Hashtable<FlatNode, Integer> nodetolabel=new Hashtable<FlatNode, Integer>();
1312         tovisit.add(fm.getNext(0));
1313
1314         /*Assign labels first.  A node needs a label if the previous
1315          * node has two exits or this node is a join point. */
1316
1317         while(!tovisit.isEmpty()) {
1318             FlatNode fn=(FlatNode)tovisit.iterator().next();
1319             tovisit.remove(fn);
1320             visited.add(fn);
1321             for(int i=0;i<fn.numNext();i++) {
1322                 FlatNode nn=fn.getNext(i);
1323                 if(i>0) {
1324                     //1) Edge >1 of node
1325                     nodetolabel.put(nn,new Integer(labelindex++));
1326                 }
1327                 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1328                     tovisit.add(nn);
1329                 } else {
1330                     //2) Join point
1331                     nodetolabel.put(nn,new Integer(labelindex++));
1332                 }
1333             }
1334         }
1335         return nodetolabel;
1336     }
1337
1338
1339     /** Generate text string that corresponds to the TempDescriptor td. */
1340     private String generateTemp(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1341         MethodDescriptor md=fm.getMethod();
1342         TaskDescriptor task=fm.getTask();
1343         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1344
1345         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1346             return td.getSafeSymbol();
1347         }
1348
1349         if (objecttemps.isLocalPtr(td)) {
1350             return localsprefix+"."+td.getSafeSymbol();
1351         }
1352
1353         if (objecttemps.isParamPtr(td)) {
1354             return paramsprefix+"->"+td.getSafeSymbol();
1355         }
1356         throw new Error();
1357     }
1358
1359     private void generateFlatNode(FlatMethod fm, LocalityBinding lb, FlatNode fn, PrintWriter output) {
1360         switch(fn.kind()) {
1361         case FKind.FlatAtomicEnterNode:
1362             generateFlatAtomicEnterNode(fm, lb, (FlatAtomicEnterNode) fn, output);
1363             return;
1364         case FKind.FlatAtomicExitNode:
1365             generateFlatAtomicExitNode(fm, lb, (FlatAtomicExitNode) fn, output);
1366             return;
1367         case FKind.FlatGlobalConvNode:
1368             generateFlatGlobalConvNode(fm, lb, (FlatGlobalConvNode) fn, output);
1369             return;
1370         case FKind.FlatTagDeclaration:
1371             generateFlatTagDeclaration(fm, lb, (FlatTagDeclaration) fn,output);
1372             return;
1373         case FKind.FlatCall:
1374             generateFlatCall(fm, lb, (FlatCall) fn,output);
1375             return;
1376         case FKind.FlatFieldNode:
1377             generateFlatFieldNode(fm, lb, (FlatFieldNode) fn,output);
1378             return;
1379         case FKind.FlatElementNode:
1380             generateFlatElementNode(fm, lb, (FlatElementNode) fn,output);
1381             return;
1382         case FKind.FlatSetElementNode:
1383             generateFlatSetElementNode(fm, lb, (FlatSetElementNode) fn,output);
1384             return;
1385         case FKind.FlatSetFieldNode:
1386             generateFlatSetFieldNode(fm, lb, (FlatSetFieldNode) fn,output);
1387             return;
1388         case FKind.FlatNew:
1389             generateFlatNew(fm, lb, (FlatNew) fn,output);
1390             return;
1391         case FKind.FlatOpNode:
1392             generateFlatOpNode(fm, lb, (FlatOpNode) fn,output);
1393             return;
1394         case FKind.FlatCastNode:
1395             generateFlatCastNode(fm, lb, (FlatCastNode) fn,output);
1396             return;
1397         case FKind.FlatLiteralNode:
1398             generateFlatLiteralNode(fm, lb, (FlatLiteralNode) fn,output);
1399             return;
1400         case FKind.FlatReturnNode:
1401             generateFlatReturnNode(fm, lb, (FlatReturnNode) fn,output);
1402             return;
1403         case FKind.FlatNop:
1404             output.println("/* nop */");
1405             return;
1406         case FKind.FlatBackEdge:
1407             if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1408                 output.println("checkcollect(&"+localsprefix+");");
1409             } else
1410                 output.println("/* nop */");
1411             return;
1412         case FKind.FlatCheckNode:
1413             generateFlatCheckNode(fm, lb, (FlatCheckNode) fn, output);
1414             return;
1415         case FKind.FlatFlagActionNode:
1416             generateFlatFlagActionNode(fm, lb, (FlatFlagActionNode) fn, output);
1417             return;
1418         case FKind.FlatPrefetchNode:
1419             generateFlatPrefetchNode(fm,lb, (FlatPrefetchNode) fn, output);
1420             return;
1421         }
1422         throw new Error();
1423     }
1424
1425     public void generateFlatPrefetchNode(FlatMethod fm, LocalityBinding lb, FlatPrefetchNode fpn, PrintWriter output) {
1426             short[] arrayfields = null;
1427             Vector fieldoffset = new Vector();
1428             Vector endoffset = new Vector();
1429             Vector oids = new Vector();
1430             short offsetcount = 0;
1431             int tuplecount = 0;
1432             int i,j;
1433
1434             if (state.PREFETCH) {
1435                     Iterator it = fpn.hspp.iterator();
1436                     output.println("/* prefetch */");
1437                     output.println("; /* empty statement to avoid compiler error */");
1438
1439                     /* TODO Add support for arrays, Currently handles only field pointers*/
1440                     /* The while loop below removes all prefetch tuples with arrays from the set of prefetches */
1441                     /*
1442                     while(it.hasNext()) {
1443                             PrefetchPair pp = (PrefetchPair) it.next();
1444                             for(i = 0; i < pp.desc.size(); i++) {
1445                                     if(pp.getDescAt(i) instanceof IndexDescriptor) {
1446                                             fpn.hspp.remove((PrefetchPair) pp);
1447                                             it = fpn.hspp.iterator();
1448                                             break;
1449                                     }
1450                             }
1451                     }
1452                     */
1453                     //it = fpn.hspp.iterator();
1454                     String oidlist = new String();
1455                     while(it.hasNext()) {
1456                             PrefetchPair pp = (PrefetchPair) it.next();
1457                             Integer statusbase = locality.getNodePreTempInfo(lb,fpn).get(pp.base);
1458                             /* Find prefetches that can generate oid */
1459                             if(statusbase == LocalityAnalysis.GLOBAL) {
1460                                     if(locality.getAtomic(lb).get(fpn).intValue()>0) { /* Inside transaction */
1461                                             generateInsideTransCode(fm,lb,output, pp,oids,fieldoffset,endoffset,tuplecount);
1462                                     } else {/* Outside Transaction */
1463                                             generateOutsideTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1464                                     }
1465                                     tuplecount++;
1466                             } else if(statusbase == LocalityAnalysis.LOCAL) {
1467                                     generateLocalTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1468                             } else {
1469                                     continue;
1470                             }
1471                     }
1472
1473                     /*Create C code for numtuples */
1474                     output.println("   int numtuples_" + count + " = " + tuplecount + ";");
1475
1476                     /*Create C code for oid array */
1477                     output.print("   unsigned int oidarray_" + count + "[] = {");
1478                     boolean needcomma=false;
1479                     it = oids.iterator();
1480                     while(it.hasNext()) {
1481                             if (needcomma)
1482                                     output.print(", ");
1483                             output.print(it.next());
1484                             needcomma=true;
1485                     }
1486                     output.println("};");
1487
1488                     /*Create C code for endoffset values */
1489                     output.print("   unsigned short endoffsetarry_" + count +"[] = {");
1490                     needcomma=false;
1491                     it = endoffset.iterator();
1492                     while(it.hasNext()) {
1493                             if (needcomma)
1494                                     output.print(", ");
1495                             output.print(it.next());
1496                             needcomma=true;
1497                     }
1498                     output.println("};");
1499
1500                     /*Create C code for Field Offset Values */
1501                     output.print("   short fieldarry_" + count +"[] = {");
1502                     needcomma=false;
1503                     it = fieldoffset.iterator();
1504                     while(it.hasNext()) {
1505                             if (needcomma)
1506                                     output.print(", ");
1507                             output.print(it.next());
1508                             needcomma=true;
1509                     }
1510                     output.println("};");
1511                     /* make the prefetch call to Runtime */
1512                     output.println("   prefetch((int) numtuples_"+count+ ", oidarray_"+count+ ", endoffsetarry_"+
1513                                     count+", fieldarry_"+count+");");
1514                     count++;
1515             }
1516     }
1517
1518     public void generateInsideTransCode(FlatMethod fm, LocalityBinding lb,PrintWriter output,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount){
1519             int i;
1520             short offsetcount = 0;
1521
1522             Object newdesc = pp.desc.get(0);
1523             if(newdesc instanceof FieldDescriptor) {
1524                     FieldDescriptor fd = (FieldDescriptor)newdesc;
1525                     String oid = new String("(unsigned int) (" +
1526                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1527                                     generateTemp(fm, pp.base, lb) + "->" + ((FieldDescriptor)fd).getSafeSymbol() +
1528                                     " : NULL)");
1529                     oids.add(oid);
1530             } else {
1531                     IndexDescriptor id = (IndexDescriptor)newdesc;
1532                     String tstlbl = new String();
1533                     for(i=0; i<id.tddesc.size(); i++) {
1534                             tstlbl += generateTemp(fm, id.getTempDescAt(i), lb) + "+";
1535                     }
1536                     tstlbl += id.offset.toString();
1537                     output.println("if ("+tstlbl+"< 0 || "+tstlbl+" >= "+
1538                                     generateTemp(fm, pp.base, lb) + "->___length___) {");
1539                     output.println("    failedboundschk();");
1540                     output.println("}");
1541                     String oid = new String("(unsigned int) (" +
1542                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1543                                     generateTemp(fm, pp.base, lb) + "[" + tstlbl + "] : NULL)");
1544                     oids.add(oid);
1545             }
1546             for(i = 1; i < pp.desc.size(); i++) {
1547                     TypeDescriptor newtd;
1548                     String newfieldoffset;
1549                     Object desc = pp.getDescAt(i);
1550                     offsetcount++;
1551                     if(desc instanceof FieldDescriptor) {
1552                             Object prevdesc = pp.getDescAt(i-1);
1553                             if(prevdesc instanceof IndexDescriptor){
1554                                     if((i-1) == 0)
1555                                             newtd = pp.base.getType();
1556                                     //FIXME currently handles one dimensional arrays
1557                                     newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1558                             } else {
1559                                     newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1560                             }
1561                             newfieldoffset = new String("(short)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1562                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1563                             fieldoffset.add(newfieldoffset);
1564                     } else {
1565                             String tstlbl = new String();
1566                             for(i=0; i<((IndexDescriptor)desc).tddesc.size(); i++) {
1567                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(i), lb) + "+";
1568                             }
1569                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1570                             newfieldoffset = new String("(short)("+tstlbl+")");
1571                             fieldoffset.add(newfieldoffset);
1572                     }
1573             }
1574             if(tuplecount > 0) {
1575                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1576                     short endoffsetval = (short) tmp;
1577                     endoffset.add(endoffsetval);
1578             }else {
1579                     endoffset.add(offsetcount);
1580             }
1581     }
1582
1583     public void generateOutsideTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp, Vector oids, Vector fieldoffset, Vector endoffset, int tuplecount) {
1584             int i;
1585             short offsetcount = 0;
1586
1587             String oid = new String(" (unsigned int) (" + generateTemp(fm, pp.base, lb)+ ")");
1588             oids.add(oid);
1589             for(i = 0; i < pp.desc.size(); i++) {
1590                     TypeDescriptor newtd;
1591                     String newfieldoffset;
1592                     Object desc = pp.getDescAt(i);
1593                     offsetcount++;
1594                     if(desc instanceof FieldDescriptor) {
1595                             if(i == 0){
1596                                     newtd = pp.base.getType();
1597                             } else {
1598                                     Object prevdesc = pp.getDescAt(i-1);
1599                                     if(prevdesc instanceof IndexDescriptor){
1600                                             //FIXME currently handles one dimensional arrays
1601                                             newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1602                                     } else {
1603                                             newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1604                                     }
1605                             }
1606                             newfieldoffset = new String("(short)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1607                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1608                     } else {
1609                             String tstlbl = new String();
1610                             for(i=0; i<((IndexDescriptor)desc).tddesc.size(); i++) {
1611                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(i), lb) + "+";
1612                             }
1613                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1614                             newfieldoffset = new String("(short)("+tstlbl+")");
1615                     }
1616                     fieldoffset.add(newfieldoffset);
1617             }
1618             if(tuplecount > 0) {
1619                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1620                     short endoffsetval = (short) tmp;
1621                     endoffset.add(endoffsetval);
1622             }else {
1623                     endoffset.add(offsetcount);
1624             }
1625             tuplecount++;
1626     }
1627
1628     public void generateLocalTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount) {
1629             int i, j;
1630             short offsetcount = 0;
1631
1632             Vector prefix = new Vector();
1633             prefix.add(generateTemp(fm,pp.base,lb));
1634             String tstlbl = new String("(" + prefix.get(0) + " != NULL ");
1635             for (i = 0; i < pp.desc.size(); i++) {
1636                     Object newdesc = pp.desc.get(i);
1637                     if(newdesc instanceof FieldDescriptor) {
1638                             FieldDescriptor fd = (FieldDescriptor) newdesc;
1639                             if(fd.isGlobal()){
1640                                     /* Field descriptor is global */
1641                                     String oid = new String(" (unsigned int) (");
1642                                     tstlbl += ") ? ";
1643                                     for(j = 0; j < prefix.size(); j++) {
1644                                             tstlbl += prefix.get(j) + "->";
1645                                     }
1646                                     tstlbl += fd.getSafeSymbol() + ": NULL";
1647                                     oid += tstlbl+ " )";
1648                                     oids.add(oid);
1649                                     for(j=i+1; j < pp.desc.size(); j++) {
1650                                             TypeDescriptor newtd;
1651                                             String newfieldoffset;
1652                                             Object desc = pp.getDescAt(j);
1653                                             offsetcount++;
1654                                             if(desc instanceof FieldDescriptor) {
1655                                                     Object prevdesc = pp.getDescAt(j-1);
1656                                                     if(prevdesc instanceof IndexDescriptor){
1657                                                             //FIXME currently handles one dimensional arrays
1658                                                             newtd = ((FieldDescriptor)pp.getDescAt(j-2)).getType();
1659                                                     } else {
1660                                                             newtd = ((FieldDescriptor) pp.getDescAt(j-1)).getType();
1661                                                     }
1662                                                     newfieldoffset = new String("(short)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1663                                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1664                                             } else {
1665                                                     String indexlbl = new String();
1666                                                     for(i=0; i<((IndexDescriptor)desc).tddesc.size(); i++) {
1667                                                             indexlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(i), lb) + "+";
1668                                                     }
1669                                                     indexlbl += ((IndexDescriptor)desc).offset.toString();
1670                                                     newfieldoffset = new String("(short)("+indexlbl+")");
1671                                             }
1672                                             fieldoffset.add(newfieldoffset);
1673                                     }
1674                                     if(tuplecount > 0) {
1675                                             int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1676                                             short endoffsetval = (short) tmp;
1677                                             endoffset.add(endoffsetval);
1678                                     }else {
1679                                             endoffset.add(offsetcount);
1680                                     }
1681                                     tuplecount++;
1682                                     break; //break from outer for loop
1683                             } else {
1684                                     tstlbl += "&& ";
1685                                     for(j = 0; j < prefix.size(); j++) {
1686                                             tstlbl += prefix.get(j) + "->";
1687                                     }
1688                                     prefix.add(fd.getSafeSymbol());
1689                                     tstlbl += fd.getSafeSymbol() + " != NULL";
1690                             }
1691                     } else { /* if Index descriptor */
1692                             String indexstring = new String();
1693                             IndexDescriptor id = (IndexDescriptor) newdesc;
1694                             if(i == 0) {
1695                                     indexstring = generateTemp(fm, pp.base, lb);
1696                             } else {
1697                                     indexstring = ((FieldDescriptor)pp.getDescAt(i-1)).getSafeSymbol();
1698                             }
1699                             tstlbl += "&& ";
1700                             for(j = 0; j < prefix.size(); j++) {
1701                                     tstlbl += prefix.get(j) + "[";
1702                             }
1703                             indexstring += "[";
1704                             for(j=0; j<id.tddesc.size(); j++) {
1705                                     tstlbl += generateTemp(fm, id.getTempDescAt(j), lb) + "+";
1706                                     indexstring += generateTemp(fm,id.getTempDescAt(j), lb) + "+";
1707                             }
1708                             tstlbl += id.offset.toString()+ "]";
1709                             indexstring += id.offset.toString()+ "]";
1710                             prefix. removeElementAt(prefix.size() -1);
1711                             prefix.add(indexstring);
1712                             tstlbl += " != NULL";
1713                     }
1714             }
1715     }
1716
1717     public void generateFlatGlobalConvNode(FlatMethod fm, LocalityBinding lb, FlatGlobalConvNode fgcn, PrintWriter output) {
1718             if (lb!=fgcn.getLocality())
1719                     return;
1720             /* Have to generate flat globalconv */
1721             if (fgcn.getMakePtr()) {
1722                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)transRead(trans, (unsigned int) "+generateTemp(fm, fgcn.getSrc(),lb)+");");
1723             } else {
1724                     /* Need to convert to OID */
1725                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)COMPOID("+generateTemp(fm, fgcn.getSrc(),lb)+");");
1726             }
1727     }
1728
1729     public void generateFlatAtomicEnterNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicEnterNode faen, PrintWriter output) {
1730             /* Check to see if we need to generate code for this atomic */
1731             if (locality.getAtomic(lb).get(faen.getPrev(0)).intValue()>0)
1732                     return;
1733             /* Backup the temps. */
1734             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1735                     TempDescriptor tmp=tmpit.next();
1736                     output.println(generateTemp(fm, backuptable.get(tmp),lb)+"="+generateTemp(fm,tmp,lb)+";");
1737             }
1738             output.println("goto transstart"+faen.getIdentifier()+";");
1739
1740             /******* Print code to retry aborted transaction *******/
1741             output.println("transretry"+faen.getIdentifier()+":");
1742
1743             /* Restore temps */
1744             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1745                     TempDescriptor tmp=tmpit.next();
1746                     output.println(generateTemp(fm, tmp,lb)+"="+generateTemp(fm,backuptable.get(tmp),lb)+";");
1747             }
1748
1749             /********* Need to revert local object store ********/
1750             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1751
1752         output.println("while ("+revertptr+") {");
1753         output.println("struct ___Object___ * tmpptr;");
1754         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1755         output.println("REVERT_OBJ("+revertptr+");");
1756         output.println(revertptr+"=tmpptr;");
1757         output.println("}");
1758
1759         /******* Tell the runtime to start the transaction *******/
1760
1761         output.println("transstart"+faen.getIdentifier()+":");
1762         output.println("trans=transStart();");
1763     }
1764
1765     public void generateFlatAtomicExitNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicExitNode faen, PrintWriter output) {
1766         /* Check to see if we need to generate code for this atomic */
1767         if (locality.getAtomic(lb).get(faen).intValue()>0)
1768             return;
1769         //store the revert list before we lose the transaction object
1770         String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1771         output.println(revertptr+"=trans->revertlist;");
1772         output.println("if (transCommit(trans)) {");
1773         /* Transaction aborts if it returns true */
1774         output.println("goto transretry"+faen.getAtomicEnter().getIdentifier()+";");
1775         output.println("} else {");
1776         /* Need to commit local object store */
1777         output.println("while ("+revertptr+") {");
1778         output.println("struct ___Object___ * tmpptr;");
1779         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1780         output.println("COMMIT_OBJ("+revertptr+");");
1781         output.println(revertptr+"=tmpptr;");
1782         output.println("}");
1783         output.println("}");
1784     }
1785
1786     private void generateFlatCheckNode(FlatMethod fm,  LocalityBinding lb, FlatCheckNode fcn, PrintWriter output) {
1787         if (state.CONSCHECK) {
1788             String specname=fcn.getSpec();
1789             String varname="repairstate___";
1790             output.println("{");
1791             output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1792
1793             TempDescriptor[] temps=fcn.getTemps();
1794             String[] vars=fcn.getVars();
1795             for(int i=0;i<temps.length;i++) {
1796                 output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i],lb)+";");
1797             }
1798
1799             output.println("if (doanalysis"+specname+"("+varname+")) {");
1800             output.println("free"+specname+"_state("+varname+");");
1801             output.println("} else {");
1802             output.println("/* Bad invariant */");
1803             output.println("free"+specname+"_state("+varname+");");
1804             output.println("abort_task();");
1805             output.println("}");
1806             output.println("}");
1807         }
1808     }
1809
1810     private void generateFlatCall(FlatMethod fm, LocalityBinding lb, FlatCall fc, PrintWriter output) {
1811         MethodDescriptor md=fc.getMethod();
1812         ParamsObject objectparams=(ParamsObject)paramstable.get(state.DSM?locality.getBinding(lb, fc):md);
1813         ClassDescriptor cn=md.getClassDesc();
1814         output.println("{");
1815         if (GENERATEPRECISEGC) {
1816             if (state.DSM) {
1817                 LocalityBinding fclb=locality.getBinding(lb, fc);
1818                 output.print("       struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1819             } else
1820                 output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1821
1822             output.print(objectparams.numPointers());
1823             output.print(", & "+localsprefix);
1824             if (fc.getThis()!=null) {
1825                 output.print(", ");
1826                 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis(),lb));
1827             }
1828             for(int i=0;i<fc.numArgs();i++) {
1829                 Descriptor var=md.getParameter(i);
1830                 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1831                 if (objectparams.isParamPtr(paramtemp)) {
1832                     TempDescriptor targ=fc.getArg(i);
1833                     output.print(", ");
1834                     TypeDescriptor td=md.getParamType(i);
1835                     if (td.isTag())
1836                         output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1837                     else
1838                         output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1839                 }
1840             }
1841             output.println("};");
1842         }
1843         output.print("       ");
1844
1845
1846         if (fc.getReturnTemp()!=null)
1847             output.print(generateTemp(fm,fc.getReturnTemp(),lb)+"=");
1848
1849         /* Do we need to do virtual dispatch? */
1850         if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1851             //no
1852             if (state.DSM) {
1853                 LocalityBinding fclb=locality.getBinding(lb, fc);
1854                 output.print(cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1855             } else {
1856                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1857             }
1858         } else {
1859             //yes
1860             output.print("((");
1861             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1862                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1863             else
1864                 output.print(md.getReturnType().getSafeSymbol()+" ");
1865             output.print("(*)(");
1866
1867             boolean printcomma=false;
1868             if (GENERATEPRECISEGC) {
1869                 if (state.DSM) {
1870                     LocalityBinding fclb=locality.getBinding(lb, fc);
1871                     output.print("struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1872                 } else
1873                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1874                 printcomma=true;
1875             }
1876
1877             for(int i=0;i<objectparams.numPrimitives();i++) {
1878                 TempDescriptor temp=objectparams.getPrimitive(i);
1879                 if (printcomma)
1880                     output.print(", ");
1881                 printcomma=true;
1882                 if (temp.getType().isClass()||temp.getType().isArray())
1883                     output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1884                 else
1885                     output.print(temp.getType().getSafeSymbol());
1886             }
1887
1888             if (state.DSM) {
1889                 LocalityBinding fclb=locality.getBinding(lb, fc);
1890                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getLocalityNumber(fclb)+"])");
1891             } else
1892                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1893         }
1894
1895         output.print("(");
1896         boolean needcomma=false;
1897         if (GENERATEPRECISEGC) {
1898             output.print("&__parameterlist__");
1899             needcomma=true;
1900         }
1901
1902         if (state.DSM&&locality.getBinding(lb,fc).isAtomic()) {
1903             if (needcomma)
1904                 output.print(",");
1905             output.print("trans");
1906             needcomma=true;
1907         }
1908
1909         if (!GENERATEPRECISEGC) {
1910             if (fc.getThis()!=null) {
1911                 TypeDescriptor ptd=md.getThis().getType();
1912                 if (needcomma)
1913                     output.print(",");
1914                 if (ptd.isClass()&&!ptd.isArray())
1915                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1916                 output.print(generateTemp(fm,fc.getThis(),lb));
1917                 needcomma=true;
1918             }
1919         }
1920
1921         for(int i=0;i<fc.numArgs();i++) {
1922             Descriptor var=md.getParameter(i);
1923             TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1924             if (objectparams.isParamPrim(paramtemp)) {
1925                 TempDescriptor targ=fc.getArg(i);
1926                 if (needcomma)
1927                     output.print(", ");
1928
1929                 TypeDescriptor ptd=md.getParamType(i);
1930                 if (ptd.isClass()&&!ptd.isArray())
1931                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1932                 output.print(generateTemp(fm, targ,lb));
1933                 needcomma=true;
1934             }
1935         }
1936         output.println(");");
1937         output.println("   }");
1938     }
1939
1940     private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1941         Set subclasses=typeutil.getSubClasses(thiscd);
1942         if (subclasses==null)
1943             return true;
1944         for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1945             ClassDescriptor cd=(ClassDescriptor)classit.next();
1946             Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1947             for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1948                 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1949                 if (md.matches(matchmd))
1950                     return false;
1951             }
1952         }
1953         return true;
1954     }
1955
1956     private void generateFlatFieldNode(FlatMethod fm, LocalityBinding lb, FlatFieldNode ffn, PrintWriter output) {
1957         if (state.DSM) {
1958             Integer status=locality.getNodePreTempInfo(lb,ffn).get(ffn.getSrc());
1959             if (status==LocalityAnalysis.GLOBAL) {
1960                 String field=ffn.getField().getSafeSymbol();
1961                 String src=generateTemp(fm, ffn.getSrc(),lb);
1962                 String dst=generateTemp(fm, ffn.getDst(),lb);
1963
1964                 if (ffn.getField().getType().isPtr()) {
1965
1966                     //TODO: Uncomment this when we have runtime support
1967                     //if (ffn.getSrc()==ffn.getDst()) {
1968                     //output.println("{");
1969                     //output.println("void * temp="+src+";");
1970                     //output.println("if (temp&0x1) {");
1971                     //output.println("temp=(void *) transRead(trans, (unsigned int) temp);");
1972                     //output.println(src+"->"+field+"="+temp+";");
1973                     //output.println("}");
1974                     //output.println(dst+"=temp;");
1975                     //output.println("}");
1976                     //} else {
1977                     output.println(dst+"="+ src +"->"+field+ ";");
1978                     //output.println("if ("+dst+"&0x1) {");
1979                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
1980                     //output.println(src+"->"+field+"="+src+"->"+field+";");
1981                     //output.println("}");
1982                     //}
1983                 } else {
1984                     output.println(dst+"="+ src+"->"+field+";");
1985                 }
1986             } else if (status==LocalityAnalysis.LOCAL) {
1987                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1988             } else if (status==LocalityAnalysis.EITHER) {
1989                 //Code is reading from a null pointer
1990                 output.println("if ("+generateTemp(fm, ffn.getSrc(),lb)+") {");
1991                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
1992                 //This should throw a suitable null pointer error
1993                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1994             } else
1995                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
1996         } else
1997             output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1998     }
1999
2000
2001     private void generateFlatSetFieldNode(FlatMethod fm, LocalityBinding lb, FlatSetFieldNode fsfn, PrintWriter output) {
2002         if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
2003             throw new Error("Can't set array length");
2004         if (state.DSM && locality.getAtomic(lb).get(fsfn).intValue()>0) {
2005             Integer statussrc=locality.getNodePreTempInfo(lb,fsfn).get(fsfn.getSrc());
2006             Integer statusdst=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
2007             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2008
2009             String src=generateTemp(fm,fsfn.getSrc(),lb);
2010             String dst=generateTemp(fm,fsfn.getDst(),lb);
2011             if (srcglobal) {
2012                 output.println("{");
2013                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2014             }
2015             if (statusdst.equals(LocalityAnalysis.GLOBAL)) {
2016                 String glbdst=dst;
2017                 //mark it dirty
2018                 output.println("*((unsigned int *)&("+dst+"->___localcopy___))|=DIRTY;");
2019                 if (srcglobal) {
2020                     output.println("*((unsigned int *)&("+glbdst+"->"+ fsfn.getField().getSafeSymbol()+"))=srcoid;");
2021                 } else
2022                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2023             } else if (statusdst.equals(LocalityAnalysis.LOCAL)) {
2024                 /** Check if we need to copy */
2025                 output.println("if(!"+dst+"->"+localcopystr+") {");
2026                 /* Link object into list */
2027                 output.println(dst+"->"+nextobjstr+"=trans->revertlist;");
2028                 output.println("trans->revertlist=(struct ___Object___ *)"+dst+";");
2029                 if (GENERATEPRECISEGC)
2030                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
2031                 else
2032                     output.println("COPY_OBJ("+dst+");");
2033                 output.println("}");
2034                 if (srcglobal)
2035                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2036                 else
2037                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2038             } else if (statusdst.equals(LocalityAnalysis.EITHER)) {
2039                 //writing to a null...bad
2040                 output.println("if ("+dst+") {");
2041                 output.println("printf(\"BIG ERROR 2\\n\");exit(-1);}");
2042                 if (srcglobal)
2043                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2044                 else
2045                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2046             }
2047             if (srcglobal) {
2048                 output.println("}");
2049             }
2050         } else {
2051             output.println(generateTemp(fm, fsfn.getDst(),lb)+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc(),lb)+";");
2052         }
2053     }
2054
2055     private void generateFlatElementNode(FlatMethod fm, LocalityBinding lb, FlatElementNode fen, PrintWriter output) {
2056         TypeDescriptor elementtype=fen.getSrc().getType().dereference();
2057         String type="";
2058
2059         if (elementtype.isArray()||elementtype.isClass())
2060             type="void *";
2061         else
2062             type=elementtype.getSafeSymbol()+" ";
2063
2064         if (fen.needsBoundsCheck()) {
2065             output.println("if ("+generateTemp(fm, fen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fen.getIndex(),lb)+" >= "+generateTemp(fm,fen.getSrc(),lb) + "->___length___)");
2066             output.println("failedboundschk();");
2067         }
2068         if (state.DSM) {
2069             Integer status=locality.getNodePreTempInfo(lb,fen).get(fen.getSrc());
2070             if (status==LocalityAnalysis.GLOBAL) {
2071                 String dst=generateTemp(fm, fen.getDst(),lb);
2072
2073                 if (elementtype.isPtr()) {
2074                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2075                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
2076                 } else {
2077                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2078                 }
2079             } else if (status==LocalityAnalysis.LOCAL) {
2080                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2081             } else if (status==LocalityAnalysis.EITHER) {
2082                 //Code is reading from a null pointer
2083                 output.println("if ("+generateTemp(fm, fen.getSrc(),lb)+") {");
2084                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2085                 //This should throw a suitable null pointer error
2086                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2087             } else
2088                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2089         } else {
2090             output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2091         }
2092     }
2093
2094     private void generateFlatSetElementNode(FlatMethod fm, LocalityBinding lb, FlatSetElementNode fsen, PrintWriter output) {
2095         //TODO: need dynamic check to make sure this assignment is actually legal
2096         //Because Object[] could actually be something more specific...ie. Integer[]
2097
2098         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
2099         String type="";
2100
2101         if (elementtype.isArray()||elementtype.isClass())
2102             type="void *";
2103         else
2104             type=elementtype.getSafeSymbol()+" ";
2105
2106
2107         if (fsen.needsBoundsCheck()) {
2108             output.println("if ("+generateTemp(fm, fsen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fsen.getIndex(),lb)+" >= "+generateTemp(fm,fsen.getDst(),lb) + "->___length___)");
2109             output.println("failedboundschk();");
2110         }
2111
2112         if (state.DSM && locality.getAtomic(lb).get(fsen).intValue()>0) {
2113             Integer statussrc=locality.getNodePreTempInfo(lb,fsen).get(fsen.getSrc());
2114             Integer statusdst=locality.getNodePreTempInfo(lb,fsen).get(fsen.getDst());
2115             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2116             boolean dstglobal=statusdst==LocalityAnalysis.GLOBAL;
2117             if (dstglobal) {
2118                 output.println("*((unsigned int *)&("+generateTemp(fm,fsen.getDst(),lb)+"->___localcopy___))|=DIRTY;");
2119             }
2120             if (srcglobal) {
2121                 output.println("{");
2122                 String src=generateTemp(fm, fsen.getSrc(), lb);
2123                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2124                 output.println("((int*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]=srcoid;");
2125                 output.println("}");
2126             } else {
2127                 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2128             }
2129         } else
2130             output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2131     }
2132
2133     private void generateFlatNew(FlatMethod fm, LocalityBinding lb, FlatNew fn, PrintWriter output) {
2134         if (fn.getType().isArray()) {
2135             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
2136             if (fn.isGlobal()) {
2137                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarrayglobal(trans, "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2138             } else if (GENERATEPRECISEGC) {
2139                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2140             } else {
2141                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2142             }
2143         } else {
2144             if (fn.isGlobal()) {
2145                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newglobal(trans, "+fn.getType().getClassDesc().getId()+");");
2146             } else if (GENERATEPRECISEGC) {
2147                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
2148             } else {
2149                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
2150             }
2151         }
2152     }
2153
2154     private void generateFlatTagDeclaration(FlatMethod fm, LocalityBinding lb, FlatTagDeclaration fn, PrintWriter output) {
2155         if (GENERATEPRECISEGC) {
2156             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
2157         } else {
2158             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag("+state.getTagId(fn.getType())+");");
2159         }
2160     }
2161
2162     private void generateFlatOpNode(FlatMethod fm, LocalityBinding lb, FlatOpNode fon, PrintWriter output) {
2163         if (fon.getRight()!=null) {
2164             if (fon.getOp().getOp()==Operation.URIGHTSHIFT) {
2165                 if (fon.getLeft().getType().isLong())
2166                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned long long)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2167                 else
2168                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned int)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2169
2170             } else
2171                 output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+fon.getOp().toString()+generateTemp(fm,fon.getRight(),lb)+";");
2172         } else if (fon.getOp().getOp()==Operation.ASSIGN)
2173             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2174         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
2175             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2176         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
2177             output.println(generateTemp(fm, fon.getDest(),lb)+" = -"+generateTemp(fm, fon.getLeft(),lb)+";");
2178         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
2179             output.println(generateTemp(fm, fon.getDest(),lb)+" = !"+generateTemp(fm, fon.getLeft(),lb)+";");
2180         else if (fon.getOp().getOp()==Operation.COMP)
2181             output.println(generateTemp(fm, fon.getDest(),lb)+" = ~"+generateTemp(fm, fon.getLeft(),lb)+";");
2182         else if (fon.getOp().getOp()==Operation.ISAVAILABLE) {
2183             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+"->fses==NULL;");
2184         } else
2185             output.println(generateTemp(fm, fon.getDest(),lb)+fon.getOp().toString()+generateTemp(fm, fon.getLeft(),lb)+";");
2186     }
2187
2188     private void generateFlatCastNode(FlatMethod fm, LocalityBinding lb, FlatCastNode fcn, PrintWriter output) {
2189         /* TODO: Do type check here */
2190         if (fcn.getType().isArray()) {
2191             throw new Error();
2192         } else if (fcn.getType().isClass())
2193             output.println(generateTemp(fm,fcn.getDst(),lb)+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc(),lb)+";");
2194         else
2195             output.println(generateTemp(fm,fcn.getDst(),lb)+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc(),lb)+";");
2196     }
2197
2198     private void generateFlatLiteralNode(FlatMethod fm, LocalityBinding lb, FlatLiteralNode fln, PrintWriter output) {
2199         if (fln.getValue()==null)
2200             output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2201         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
2202             if (GENERATEPRECISEGC) {
2203                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2204             } else {
2205                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2206             }
2207         } else if (fln.getType().isBoolean()) {
2208             if (((Boolean)fln.getValue()).booleanValue())
2209                 output.println(generateTemp(fm, fln.getDst(),lb)+"=1;");
2210             else
2211                 output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2212         } else if (fln.getType().isChar()) {
2213             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
2214             output.println(generateTemp(fm, fln.getDst(),lb)+"='"+st+"';");
2215         } else if (fln.getType().isLong()) {
2216             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+"LL;");
2217         } else
2218             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+";");
2219     }
2220
2221     private void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
2222         if (frn.getReturnTemp()!=null) {
2223             if (frn.getReturnTemp().getType().isPtr())
2224                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2225             else
2226                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2227         } else
2228             output.println("return;");
2229     }
2230
2231     private void generateFlatCondBranch(FlatMethod fm, LocalityBinding lb, FlatCondBranch fcb, String label, PrintWriter output) {
2232         output.println("if (!"+generateTemp(fm, fcb.getTest(),lb)+") goto "+label+";");
2233     }
2234
2235     /** This method generates header information for the method or
2236      * task referenced by the Descriptor des. */
2237
2238     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
2239         /* Print header */
2240         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
2241         MethodDescriptor md=null;
2242         TaskDescriptor task=null;
2243         if (des instanceof MethodDescriptor)
2244             md=(MethodDescriptor) des;
2245         else
2246             task=(TaskDescriptor) des;
2247
2248         ClassDescriptor cn=md!=null?md.getClassDesc():null;
2249
2250         if (md!=null&&md.getReturnType()!=null) {
2251             if (md.getReturnType().isClass()||md.getReturnType().isArray())
2252                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
2253             else
2254                 output.print(md.getReturnType().getSafeSymbol()+" ");
2255         } else
2256             //catch the constructor case
2257             output.print("void ");
2258         if (md!=null) {
2259             if (state.DSM) {
2260                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2261             } else
2262                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2263         } else
2264             output.print(task.getSafeSymbol()+"(");
2265
2266         boolean printcomma=false;
2267         if (GENERATEPRECISEGC) {
2268             if (md!=null) {
2269                 if (state.DSM) {
2270                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2271                 } else
2272                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2273             } else
2274                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
2275             printcomma=true;
2276         }
2277
2278         if (state.DSM&&lb.isAtomic()) {
2279             if (printcomma)
2280                 output.print(", ");
2281             output.print("transrecord_t * trans");
2282             printcomma=true;
2283         }
2284
2285         if (md!=null) {
2286             /* Method */
2287             for(int i=0;i<objectparams.numPrimitives();i++) {
2288                 TempDescriptor temp=objectparams.getPrimitive(i);
2289                 if (printcomma)
2290                     output.print(", ");
2291                 printcomma=true;
2292                 if (temp.getType().isClass()||temp.getType().isArray())
2293                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
2294                 else
2295                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
2296             }
2297             output.println(") {");
2298         } else if (!GENERATEPRECISEGC) {
2299             /* Imprecise Task */
2300             output.println("void * parameterarray[]) {");
2301             /* Unpack variables */
2302             for(int i=0;i<objectparams.numPrimitives();i++) {
2303                 TempDescriptor temp=objectparams.getPrimitive(i);
2304                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
2305             }
2306             for(int i=0;i<fm.numTags();i++) {
2307                 TempDescriptor temp=fm.getTag(i);
2308                 int offset=i+objectparams.numPrimitives();
2309                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
2310             }
2311
2312             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
2313                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
2314         } else output.println(") {");
2315     }
2316
2317     public void generateFlatFlagActionNode(FlatMethod fm, LocalityBinding lb, FlatFlagActionNode ffan, PrintWriter output) {
2318         output.println("/* FlatFlagActionNode */");
2319
2320
2321         /* Process tag changes */
2322         Relation tagsettable=new Relation();
2323         Relation tagcleartable=new Relation();
2324
2325         Iterator tagsit=ffan.getTempTagPairs();
2326         while (tagsit.hasNext()) {
2327             TempTagPair ttp=(TempTagPair) tagsit.next();
2328             TempDescriptor objtmp=ttp.getTemp();
2329             TagDescriptor tag=ttp.getTag();
2330             TempDescriptor tagtmp=ttp.getTagTemp();
2331             boolean tagstatus=ffan.getTagChange(ttp);
2332             if (tagstatus) {
2333                 tagsettable.put(objtmp, tagtmp);
2334             } else {
2335                 tagcleartable.put(objtmp, tagtmp);
2336             }
2337         }
2338
2339
2340         Hashtable flagandtable=new Hashtable();
2341         Hashtable flagortable=new Hashtable();
2342
2343         /* Process flag changes */
2344         Iterator flagsit=ffan.getTempFlagPairs();
2345         while(flagsit.hasNext()) {
2346             TempFlagPair tfp=(TempFlagPair)flagsit.next();
2347             TempDescriptor temp=tfp.getTemp();
2348             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
2349             FlagDescriptor flag=tfp.getFlag();
2350             if (flag==null) {
2351                 //Newly allocate objects that don't set any flags case
2352                 if (flagortable.containsKey(temp)) {
2353                     throw new Error();
2354                 }
2355                 int mask=0;
2356                 flagortable.put(temp,new Integer(mask));
2357             } else {
2358                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
2359                 boolean flagstatus=ffan.getFlagChange(tfp);
2360                 if (flagstatus) {
2361                     int mask=0;
2362                     if (flagortable.containsKey(temp)) {
2363                         mask=((Integer)flagortable.get(temp)).intValue();
2364                     }
2365                     mask|=flagid;
2366                     flagortable.put(temp,new Integer(mask));
2367                 } else {
2368                     int mask=0xFFFFFFFF;
2369                     if (flagandtable.containsKey(temp)) {
2370                         mask=((Integer)flagandtable.get(temp)).intValue();
2371                     }
2372                     mask&=(0xFFFFFFFF^flagid);
2373                     flagandtable.put(temp,new Integer(mask));
2374                 }
2375             }
2376         }
2377
2378
2379         HashSet flagtagset=new HashSet();
2380         flagtagset.addAll(flagortable.keySet());
2381         flagtagset.addAll(flagandtable.keySet());
2382         flagtagset.addAll(tagsettable.keySet());
2383         flagtagset.addAll(tagcleartable.keySet());
2384
2385         Iterator ftit=flagtagset.iterator();
2386         while(ftit.hasNext()) {
2387             TempDescriptor temp=(TempDescriptor)ftit.next();
2388
2389
2390             Set tagtmps=tagcleartable.get(temp);
2391             if (tagtmps!=null) {
2392                 Iterator tagit=tagtmps.iterator();
2393                 while(tagit.hasNext()) {
2394                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2395                     if (GENERATEPRECISEGC)
2396                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2397                     else
2398                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2399                 }
2400             }
2401
2402             tagtmps=tagsettable.get(temp);
2403             if (tagtmps!=null) {
2404                 Iterator tagit=tagtmps.iterator();
2405                 while(tagit.hasNext()) {
2406                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2407                     if (GENERATEPRECISEGC)
2408                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2409                     else
2410                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp, lb)+", "+generateTemp(fm,tagtmp, lb)+");");
2411                 }
2412             }
2413
2414             int ormask=0;
2415             int andmask=0xFFFFFFF;
2416
2417             if (flagortable.containsKey(temp))
2418                 ormask=((Integer)flagortable.get(temp)).intValue();
2419             if (flagandtable.containsKey(temp))
2420                 andmask=((Integer)flagandtable.get(temp)).intValue();
2421             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2422                 output.println("flagorandinit("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2423             } else {
2424                 output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2425             }
2426         }
2427     }
2428
2429     void generateOptionalHeader(PrintWriter headers) {
2430
2431          //GENERATE HEADERS
2432          headers.println("#include \"task.h\"\n\n");
2433          headers.println("#ifndef _OPTIONAL_STRUCT_");
2434          headers.println("#define _OPTIONAL_STRUCT_");
2435
2436          //STRUCT PREDICATEMEMBER
2437          headers.println("struct predicatemember{");
2438          headers.println("int type;");
2439          headers.println("int numdnfterms;");
2440          headers.println("int * flags;");
2441          headers.println("int numtags;");
2442          headers.println("int * tags;\n};\n\n");
2443
2444          //STRUCT OPTIONALTASKDESCRIPTOR
2445          headers.println("struct optionaltaskdescriptor{");
2446          headers.println("struct taskdescriptor * task;");
2447          headers.println("int index;");
2448          headers.println("int numenterflags;");
2449          headers.println("int * enterflags;");
2450          headers.println("int numpredicatemembers;");
2451          headers.println("struct predicatemember ** predicatememberarray;");
2452          headers.println("};\n\n");
2453
2454          //STRUCT TASKFAILURE
2455          headers.println("struct taskfailure {");
2456          headers.println("struct taskdescriptor * task;");
2457          headers.println("int index;");
2458          headers.println("int numoptionaltaskdescriptors;");
2459          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2460
2461          //STRUCT FSANALYSISWRAPPER
2462          headers.println("struct fsanalysiswrapper{");
2463          headers.println("int  flags;");
2464          headers.println("int numtags;");
2465          headers.println("int * tags;");
2466          headers.println("int numtaskfailures;");
2467          headers.println("struct taskfailure ** taskfailurearray;");
2468          headers.println("int numoptionaltaskdescriptors;");
2469          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2470
2471          //STRUCT CLASSANALYSISWRAPPER
2472          headers.println("struct classanalysiswrapper{");
2473          headers.println("int type;");
2474          headers.println("int numotd;");
2475          headers.println("struct optionaltaskdescriptor ** otdarray;");
2476          headers.println("int numfsanalysiswrappers;");
2477          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};");
2478
2479          headers.println("extern struct classanalysiswrapper * classanalysiswrapperarray[];");
2480
2481          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2482          while(taskit.hasNext()) {
2483              TaskDescriptor td=(TaskDescriptor)taskit.next();
2484              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2485          }
2486
2487     }
2488
2489     //CHECK OVER THIS -- THERE COULD BE SOME ERRORS HERE
2490     int generateOptionalPredicate(Predicate predicate, OptionalTaskDescriptor otd, ClassDescriptor cdtemp, PrintWriter output) {
2491         int predicateindex = 0;
2492         //iterate through the classes concerned by the predicate
2493         Set c_vard = predicate.vardescriptors;
2494         Hashtable<TempDescriptor, Integer> slotnumber=new Hashtable<TempDescriptor, Integer>();
2495         int current_slot=0;
2496
2497         for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2498             VarDescriptor vard = (VarDescriptor)vard_it.next();
2499             TypeDescriptor typed = vard.getType();
2500
2501             //generate for flags
2502             HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2503             output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2504             int numberterms=0;
2505             if (fen_hashset!=null){
2506                 for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2507                     FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2508                     if (fen!=null) {
2509                         DNFFlag dflag=fen.getDNF();
2510                         numberterms+=dflag.size();
2511
2512                         Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2513
2514                         for(int j=0;j<dflag.size();j++) {
2515                             if (j!=0)
2516                                 output.println(",");
2517                             Vector term=dflag.get(j);
2518                             int andmask=0;
2519                             int checkmask=0;
2520                             for(int k=0;k<term.size();k++) {
2521                                 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2522                                 FlagDescriptor fd=dfa.getFlag();
2523                                 boolean negated=dfa.getNegated();
2524                                 int flagid=1<<((Integer)flags.get(fd)).intValue();
2525                                 andmask|=flagid;
2526                                 if (!negated)
2527                                     checkmask|=flagid;
2528                             }
2529                             output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2530                         }
2531                     }
2532                 }
2533             }
2534             output.println("};\n");
2535
2536             //generate for tags
2537             TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2538             output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2539             int numtags = 0;
2540             if (tagel!=null){
2541                 for(int j=0;j<tagel.numTags();j++) {
2542                     if (j!=0)
2543                         output.println(",");
2544                     TempDescriptor tmp=tagel.getTemp(j);
2545                     if (!slotnumber.containsKey(tmp)) {
2546                         Integer slotint=new Integer(current_slot++);
2547                         slotnumber.put(tmp,slotint);
2548                     }
2549                     int slot=slotnumber.get(tmp).intValue();
2550                     output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
2551                 }
2552                 numtags = tagel.numTags();
2553             }
2554             output.println("};");
2555
2556             //store the result into a predicatemember struct
2557             output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2558             output.println("/*type*/"+typed.getClassDesc().getId()+",");
2559             output.println("/* number of dnf terms */"+numberterms+",");
2560             output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2561             output.println("/* number of tag */"+numtags+",");
2562             output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2563             output.println("};\n");
2564             predicateindex++;
2565         }
2566
2567
2568         //generate an array that stores the entire predicate
2569         output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2570         for( int j = 0; j<predicateindex; j++){
2571             if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2572             else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2573         }
2574         output.println("};\n");
2575         return predicateindex;
2576     }
2577
2578
2579      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, Set<OptionalTaskDescriptor>>> safeexecution, Hashtable optionaltaskdescriptors) {
2580          generateOptionalHeader(headers);
2581          //GENERATE STRUCTS
2582          output.println("#include \"optionalstruct.h\"\n\n");
2583          output.println("#include \"stdlib.h\"\n");
2584
2585          HashSet processedcd = new HashSet();
2586          int maxotd=0;
2587          Enumeration e = safeexecution.keys();
2588          while (e.hasMoreElements()) {
2589              int numotd=0;
2590              //get the class
2591              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2592              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2593
2594              //Generate the struct of optionals
2595              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2596              numotd = c_otd.size();
2597              if(maxotd<numotd) maxotd = numotd;
2598              if( !c_otd.isEmpty() ){
2599                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2600                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2601
2602                      //generate the int arrays for the predicate
2603                      Predicate predicate = otd.predicate;
2604                      int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
2605                      TreeSet<Integer> fsset=new TreeSet<Integer>();
2606                      //iterate through possible FSes corresponding to
2607                      //the state when entering
2608
2609                      for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext();){
2610                          FlagState fs = (FlagState)fses.next();
2611                          int flagid=0;
2612                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2613                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2614                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2615                              flagid|=id;
2616                          }
2617                          fsset.add(new Integer(flagid));
2618                          //tag information not needed because tag
2619                          //changes are not tolerated.
2620                      }
2621
2622                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2623                      boolean needcomma=false;
2624                      for(Iterator<Integer> it=fsset.iterator();it.hasNext();) {
2625                          if(needcomma)
2626                              output.print(", ");
2627                          output.println(it.next());
2628                      }
2629
2630                      output.println("};\n");
2631
2632
2633                      //generate optionaltaskdescriptor that actually
2634                      //includes exit fses, predicate and the task
2635                      //concerned
2636                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2637                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2638                      output.println("/*index*/"+otd.getIndex()+",");
2639                      output.println("/*number of enter flags*/"+fsset.size()+",");
2640                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2641                      output.println("/*number of members */"+predicateindex+",");
2642                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2643                      output.println("};\n");
2644                  }
2645              } else
2646                  continue;
2647              // if there are no optionals, there is no need to build the rest of the struct
2648
2649              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2650              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2651              if( !c_otd.isEmpty() ){
2652                  boolean needcomma=false;
2653                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2654                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2655                      if(needcomma)
2656                          output.println(",");
2657                      needcomma=true;
2658                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2659                  }
2660              }
2661              output.println("};\n");
2662
2663              //get all the possible flagstates reachable by an object
2664              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2665              int fscounter = 0;
2666              TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
2667              fsts.addAll(hashtbtemp.keySet());
2668              for(Iterator fsit=fsts.iterator();fsit.hasNext();) {
2669                  FlagState fs = (FlagState)fsit.next();
2670                  fscounter++;
2671
2672                  //get the set of OptionalTaskDescriptors corresponding
2673                  HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
2674                  //iterate through the OptionalTaskDescriptors and
2675                  //store the pointers to the optionals struct (see on
2676                  //top) into an array
2677
2678                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2679                  for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext();){
2680                      OptionalTaskDescriptor mm = mos.next();
2681                      if(!mos.hasNext())
2682                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2683                      else
2684                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2685                  }
2686
2687                  output.println("};\n");
2688
2689                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2690
2691                  int flagid=0;
2692                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2693                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2694                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2695                      flagid|=id;
2696                  }
2697
2698                  //process tag information
2699
2700                  int tagcounter = 0;
2701                  boolean first = true;
2702                  Enumeration tag_enum = fs.getTags();
2703                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2704                  while(tag_enum.hasMoreElements()){
2705                      tagcounter++;
2706                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2707                      if(first==true)
2708                          first = false;
2709                      else
2710                          output.println(", ");
2711                      output.println("/*tagid*/"+state.getTagId(tagd));
2712                  }
2713                  output.println("};");
2714
2715                  Set<TaskIndex> tiset=sa.getTaskIndex(fs);
2716                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2717                      TaskIndex ti=itti.next();
2718                      if (ti.isRuntime())
2719                          continue;
2720
2721                      Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
2722
2723                      output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
2724                      boolean needcomma=false;
2725                      for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator();otdit.hasNext();) {
2726                          OptionalTaskDescriptor otd=otdit.next();
2727                          if(needcomma)
2728                              output.print(", ");
2729                          needcomma=true;
2730                          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2731                      }
2732                      output.println("};");
2733
2734                      output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
2735                      output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
2736                      output.print(ti.getIndex()+", ");
2737                      output.print(otdset.size()+", ");
2738                      output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
2739                      output.println("};");
2740                  }
2741
2742                  tiset=sa.getTaskIndex(fs);
2743                  boolean needcomma=false;
2744                  int runtimeti=0;
2745                  output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2746                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2747                      TaskIndex ti=itti.next();
2748                      if (ti.isRuntime()) {
2749                          runtimeti++;
2750                          continue;
2751                      }
2752                      if (needcomma)
2753                          output.print(", ");
2754                      needcomma=true;
2755                      output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
2756                  }
2757                  output.println("};\n");
2758
2759                  //Store the result in fsanalysiswrapper
2760
2761                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2762                  output.println("/*flag*/"+flagid+",");
2763                  output.println("/* number of tags*/"+tagcounter+",");
2764                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2765                  output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
2766                  output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2767                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2768                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2769                  output.println("};\n");
2770
2771              }
2772
2773              //Build the array of fsanalysiswrappers
2774              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2775              boolean needcomma=false;
2776              for(int i = 0; i<fscounter; i++){
2777                  if (needcomma) output.print(",");
2778                  output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
2779                  needcomma=true;
2780              }
2781              output.println("};");
2782
2783              //Build the classanalysiswrapper referring to the previous array
2784              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2785              output.println("/*type*/"+cdtemp.getId()+",");
2786              output.println("/*numotd*/"+numotd+",");
2787              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2788              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2789              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2790              processedcd.add(cdtemp);
2791          }
2792
2793          //build an array containing every classes for which code has been build
2794          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2795          for(int i=0;i<state.numClasses();i++) {
2796              ClassDescriptor cn=cdarray[i];
2797              if (i>0)
2798                  output.print(", ");
2799              if (processedcd.contains(cn))
2800                  output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
2801              else
2802                  output.print("NULL");
2803          }
2804          output.println("};");
2805
2806          output.println("#define MAXOTD "+maxotd);
2807          headers.println("#endif");
2808      }
2809
2810     public List<OptionalTaskDescriptor> ordertd(Set<OptionalTaskDescriptor> otdset) {
2811         Relation r=new Relation();
2812         for(Iterator<OptionalTaskDescriptor>otdit=otdset.iterator();otdit.hasNext();) {
2813             OptionalTaskDescriptor otd=otdit.next();
2814             TaskIndex ti=new TaskIndex(otd.td, otd.getIndex());
2815             r.put(ti, otd);
2816         }
2817
2818         LinkedList<OptionalTaskDescriptor> l=new LinkedList<OptionalTaskDescriptor>();
2819         for(Iterator it=r.keySet().iterator();it.hasNext();) {
2820             Set s=r.get(it.next());
2821             for(Iterator it2=s.iterator();it2.hasNext();) {
2822                 OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
2823                 l.add(otd);
2824             }
2825         }
2826
2827         return l;
2828     }
2829 }
2830
2831
2832
2833
2834
2835