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