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
 351     private void outputStructs(PrintWriter outstructs) {
 352         outstructs.println("#ifndef STRUCTDEFS_H");
 353         outstructs.println("#define STRUCTDEFS_H");
 354         outstructs.println("#include \"classdefs.h\"");
 355
 356         /* Output #defines that the runtime uses to determine type
 357          * numbers for various objects it needs */
 358         outstructs.println("#define MAXCOUNT "+maxcount);
 359         if (state.DSM) {
 360             LocalityBinding lb=new LocalityBinding(typeutil.getRun(), false);
 361             lb.setGlobalThis(LocalityAnalysis.GLOBAL);
 362             outstructs.println("#define RUNMETHOD "+virtualcalls.getLocalityNumber(lb));
 363         }
 364
 365         outstructs.println("#define STRINGARRAYTYPE "+
 366                            (state.getArrayNumber(
 367                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass))).makeArray(state))+state.numClasses()));
 368
 369         outstructs.println("#define OBJECTARRAYTYPE "+
 370                            (state.getArrayNumber(
 371                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.ObjectClass))).makeArray(state))+state.numClasses()));
 372
 373
 374         outstructs.println("#define STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
 375         outstructs.println("#define CHARARRAYTYPE "+
 376                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
 377
 378         outstructs.println("#define BYTEARRAYTYPE "+
 379                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
 380
 381         outstructs.println("#define BYTEARRAYARRAYTYPE "+
 382                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
 383
 384         outstructs.println("#define NUMCLASSES "+state.numClasses());
 385         if (state.TASK) {
 386             outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
 387             outstructs.println("#define TAGTYPE "+typeutil.getClass(TypeUtil.TagClass).getId());
 388             outstructs.println("#define TAGARRAYTYPE "+
 389                                (state.getArrayNumber(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass)).makeArray(state))+state.numClasses()));
 390         }
 391     }
 392
 393     private void outputClassDeclarations(PrintWriter outclassdefs) {
 394         if (state.THREAD)
 395             outclassdefs.println("#include <pthread.h>");
 396         if(state.OPTIONAL)
 397             outclassdefs.println("#include \"optionalstruct.h\"");
 398         outclassdefs.println("struct "+arraytype+";");
 399         /* Start by declaring all structs */
 400         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 401         while(it.hasNext()) {
 402             ClassDescriptor cn=(ClassDescriptor)it.next();
 403             outclassdefs.println("struct "+cn.getSafeSymbol()+";");
 404         }
 405         outclassdefs.println("");
 406         //Print out definition for array type
 407         outclassdefs.println("struct "+arraytype+" {");
 408         outclassdefs.println("  int type;");
 409         if (state.THREAD) {
 410             outclassdefs.println("  pthread_t tid;");
 411             outclassdefs.println("  void * lockentry;");
 412             outclassdefs.println("  int lockcount;");
 413         }
 414         if (state.TASK) {
 415             outclassdefs.println("  int flag;");
 416             outclassdefs.println("  void * flagptr;");
 417             if(state.OPTIONAL){
 418                 outclassdefs.println("  int numfses;");
 419                 outclassdefs.println("  int * fses;");
 420             }
 421         }
 422         printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
 423
 424         outclassdefs.println("  int ___length___;");
 425         outclassdefs.println("};\n");
 426         outclassdefs.println("extern int classsize[];");
 427         outclassdefs.println("extern int hasflags[];");
 428         outclassdefs.println("extern unsigned int * pointerarray[];");
 429         outclassdefs.println("extern int supertypes[];");
 430     }
 431
 432     /** Prints out definitions for generic task structures */
 433
 434     private void outputTaskTypes(PrintWriter outtask) {
 435         outtask.println("#ifndef _TASK_H");
 436         outtask.println("#define _TASK_H");
 437         outtask.println("struct parameterdescriptor {");
 438         outtask.println("int type;");
 439         outtask.println("int numberterms;");
 440         outtask.println("int *intarray;");
 441         outtask.println("void * queue;");
 442         outtask.println("int numbertags;");
 443         outtask.println("int *tagarray;");
 444         outtask.println("};");
 445
 446         outtask.println("struct taskdescriptor {");
 447         outtask.println("void * taskptr;");
 448         outtask.println("int numParameters;");
 449         outtask.println("int numTotal;");
 450         outtask.println("struct parameterdescriptor **descriptorarray;");
 451         outtask.println("char * name;");
 452         outtask.println("};");
 453         outtask.println("extern struct taskdescriptor * taskarray[];");
 454         outtask.println("extern numtasks;");
 455         outtask.println("#endif");
 456     }
 457
 458
 459     private void buildRepairStructs(PrintWriter outrepairstructs) {
 460         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 461         while(classit.hasNext()) {
 462             ClassDescriptor cn=(ClassDescriptor)classit.next();
 463             outrepairstructs.println("structure "+cn.getSymbol()+" {");
 464             outrepairstructs.println("  int __type__;");
 465             if (state.TASK) {
 466                 outrepairstructs.println("  int __flag__;");
 467                 outrepairstructs.println("  int __flagptr__;");
 468             }
 469             printRepairStruct(cn, outrepairstructs);
 470             outrepairstructs.println("}\n");
 471         }
 472
 473         for(int i=0;i<state.numArrays();i++) {
 474             TypeDescriptor tdarray=arraytable[i];
 475             TypeDescriptor tdelement=tdarray.dereference();
 476             outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
 477             outrepairstructs.println("  int __type__;");
 478             printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
 479             outrepairstructs.println("  int length;");
 480             /*
 481               // Need to add support to repair tool for this
 482               if (tdelement.isClass()||tdelement.isArray())
 483                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" * elem[this.length];");
 484             else
 485                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" elem[this.length];");
 486             */
 487             outrepairstructs.println("}\n");
 488         }
 489     }
 490
 491     private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
 492         ClassDescriptor sp=cn.getSuperDesc();
 493         if (sp!=null)
 494             printRepairStruct(sp, output);
 495
 496         Vector fields=(Vector)fieldorder.get(cn);
 497
 498         for(int i=0;i<fields.size();i++) {
 499             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 500             if (fd.getType().isArray()) {
 501                 output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
 502             } else if (fd.getType().isClass())
 503                 output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
 504             else if (fd.getType().isFloat())
 505                 output.println("  int "+fd.getSymbol()+"; /* really float */");
 506             else
 507                 output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
 508         }
 509     }
 510
 511     /** This method outputs TaskDescriptor information */
 512     void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
 513         for (int i=0;i<task.numParameters();i++) {
 514             VarDescriptor param_var=task.getParameter(i);
 515             TypeDescriptor param_type=task.getParamType(i);
 516             FlagExpressionNode param_flag=task.getFlag(param_var);
 517             TagExpressionList param_tag=task.getTag(param_var);
 518
 519             int dnfterms;
 520             if (param_flag==null) {
 521                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 522                 output.println("0x0, 0x0 };");
 523                 dnfterms=1;
 524             } else {
 525                 DNFFlag dflag=param_flag.getDNF();
 526                 dnfterms=dflag.size();
 527
 528                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 529                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 530                 for(int j=0;j<dflag.size();j++) {
 531                     if (j!=0)
 532                         output.println(",");
 533                     Vector term=dflag.get(j);
 534                     int andmask=0;
 535                     int checkmask=0;
 536                     for(int k=0;k<term.size();k++) {
 537                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 538                         FlagDescriptor fd=dfa.getFlag();
 539                         boolean negated=dfa.getNegated();
 540                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 541                         andmask|=flagid;
 542                         if (!negated)
 543                             checkmask|=flagid;
 544                     }
 545                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 546                 }
 547                 output.println("};");
 548             }
 549
 550             output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
 551             //BUG...added next line to fix, test with any task program
 552             if (param_tag!=null)
 553                 for(int j=0;j<param_tag.numTags();j++) {
 554                     if (j!=0)
 555                         output.println(",");
 556                     /* for each tag we need */
 557                     /* which slot it is */
 558                     /* what type it is */
 559                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 560                     TempDescriptor tmp=param_tag.getTemp(j);
 561                     int slot=fm.getTagInt(tmp);
 562                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 563                 }
 564             output.println("};");
 565
 566             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
 567             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 568             output.println("/* number of DNF terms */"+dnfterms+",");
 569             output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
 570             output.println("0,");
 571             //BUG, added next line to fix and else statement...test
 572             //with any task program
 573             if (param_tag!=null)
 574                 output.println("/* number of tags */"+param_tag.numTags()+",");
 575             else
 576                 output.println("/* number of tags */ 0,");
 577             output.println("parametertag_"+i+"_"+task.getSafeSymbol());
 578             output.println("};");
 579         }
 580
 581
 582         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
 583         for (int i=0;i<task.numParameters();i++) {
 584             if (i!=0)
 585                 output.println(",");
 586             output.print("&parameter_"+i+"_"+task.getSafeSymbol());
 587         }
 588         output.println("};");
 589
 590         output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
 591         output.println("&"+task.getSafeSymbol()+",");
 592         output.println("/* number of parameters */" +task.numParameters() + ",");
 593         int numtotal=task.numParameters()+fm.numTags();
 594         output.println("/* number total parameters */" +numtotal + ",");
 595         output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
 596         output.println("\""+task.getSymbol()+"\"");
 597         output.println("};");
 598     }
 599
 600
 601     /** The buildVirtualTables method outputs the virtual dispatch
 602      * tables for methods. */
 603
 604     private void buildVirtualTables(PrintWriter outvirtual) {
 605         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 606         while(classit.hasNext()) {
 607             ClassDescriptor cd=(ClassDescriptor)classit.next();
 608             if (virtualcalls.getMethodCount(cd)>maxcount)
 609                 maxcount=virtualcalls.getMethodCount(cd);
 610         }
 611         MethodDescriptor[][] virtualtable=null;
 612         LocalityBinding[][] lbvirtualtable=null;
 613         if (state.DSM)
 614             lbvirtualtable=new LocalityBinding[state.numClasses()+state.numArrays()][maxcount];
 615         else
 616             virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
 617
 618         /* Fill in virtual table */
 619         classit=state.getClassSymbolTable().getDescriptorsIterator();
 620         while(classit.hasNext()) {
 621             ClassDescriptor cd=(ClassDescriptor)classit.next();
 622             if (state.DSM)
 623                 fillinRow(cd, lbvirtualtable, cd.getId());
 624             else
 625                 fillinRow(cd, virtualtable, cd.getId());
 626         }
 627
 628         ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
 629         Iterator arrayit=state.getArrayIterator();
 630         while(arrayit.hasNext()) {
 631             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 632             int id=state.getArrayNumber(td);
 633             if (state.DSM)
 634                 fillinRow(objectcd, lbvirtualtable, id+state.numClasses());
 635             else
 636                 fillinRow(objectcd, virtualtable, id+state.numClasses());
 637         }
 638
 639         outvirtual.print("void * virtualtable[]={");
 640         boolean needcomma=false;
 641         for(int i=0;i<state.numClasses()+state.numArrays();i++) {
 642             for(int j=0;j<maxcount;j++) {
 643                 if (needcomma)
 644                     outvirtual.print(", ");
 645                 if (state.DSM&&lbvirtualtable[i][j]!=null) {
 646                     LocalityBinding lb=lbvirtualtable[i][j];
 647                     MethodDescriptor md=lb.getMethod();
 648                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 649                 } else if (!state.DSM&&virtualtable[i][j]!=null) {
 650                     MethodDescriptor md=virtualtable[i][j];
 651                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 652                 } else {
 653                     outvirtual.print("0");
 654                 }
 655                 needcomma=true;
 656             }
 657             outvirtual.println("");
 658         }
 659         outvirtual.println("};");
 660         outvirtual.close();
 661     }
 662
 663     private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
 664         /* Get inherited methods */
 665         if (cd.getSuperDesc()!=null)
 666             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 667         /* Override them with our methods */
 668         for(Iterator it=cd.getMethods();it.hasNext();) {
 669             MethodDescriptor md=(MethodDescriptor)it.next();
 670             if (md.isStatic()||md.getReturnType()==null)
 671                 continue;
 672             int methodnum=virtualcalls.getMethodNumber(md);
 673             virtualtable[rownum][methodnum]=md;
 674         }
 675     }
 676
 677     private void fillinRow(ClassDescriptor cd, LocalityBinding[][] virtualtable, int rownum) {
 678         /* Get inherited methods */
 679         if (cd.getSuperDesc()!=null)
 680             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 681         /* Override them with our methods */
 682         if (locality.getClassBindings(cd)!=null)
 683             for(Iterator<LocalityBinding> lbit=locality.getClassBindings(cd).iterator();lbit.hasNext();) {
 684                 LocalityBinding lb=lbit.next();
 685                 MethodDescriptor md=lb.getMethod();
 686                 //Is the method static or a constructor
 687                 if (md.isStatic()||md.getReturnType()==null)
 688                     continue;
 689                 int methodnum=virtualcalls.getLocalityNumber(lb);
 690                 virtualtable[rownum][methodnum]=lb;
 691             }
 692     }
 693
 694
 695     /** Generate array that contains the sizes of class objects.  The
 696      * object allocation functions in the runtime use this
 697      * information. */
 698
 699     private void generateSizeArray(PrintWriter outclassdefs) {
 700         outclassdefs.print("int classsize[]={");
 701         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 702         cdarray=new ClassDescriptor[state.numClasses()];
 703         while(it.hasNext()) {
 704             ClassDescriptor cd=(ClassDescriptor)it.next();
 705             cdarray[cd.getId()]=cd;
 706         }
 707         boolean needcomma=false;
 708         for(int i=0;i<state.numClasses();i++) {
 709             if (needcomma)
 710                 outclassdefs.print(", ");
 711             outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
 712             needcomma=true;
 713         }
 714
 715         arraytable=new TypeDescriptor[state.numArrays()];
 716
 717         Iterator arrayit=state.getArrayIterator();
 718         while(arrayit.hasNext()) {
 719             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 720             int id=state.getArrayNumber(td);
 721             arraytable[id]=td;
 722         }
 723
 724         for(int i=0;i<state.numArrays();i++) {
 725             if (needcomma)
 726                 outclassdefs.print(", ");
 727             TypeDescriptor tdelement=arraytable[i].dereference();
 728             if (tdelement.isArray()||tdelement.isClass())
 729                 outclassdefs.print("sizeof(void *)");
 730             else
 731                 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
 732             needcomma=true;
 733         }
 734
 735         outclassdefs.println("};");
 736     }
 737
 738     /** Constructs params and temp objects for each method or task.
 739      * These objects tell the compiler which temps need to be
 740      * allocated.  */
 741
 742     private void generateTempStructs(FlatMethod fm, LocalityBinding lb) {
 743         MethodDescriptor md=fm.getMethod();
 744         TaskDescriptor task=fm.getTask();
 745         Set<TempDescriptor> saveset=lb!=null?locality.getTempSet(lb):null;
 746         ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
 747
 748         if (lb!=null)
 749             paramstable.put(lb, objectparams);
 750         else if (md!=null)
 751             paramstable.put(md, objectparams);
 752         else
 753             paramstable.put(task, objectparams);
 754
 755         for(int i=0;i<fm.numParameters();i++) {
 756             TempDescriptor temp=fm.getParameter(i);
 757             TypeDescriptor type=temp.getType();
 758             if (type.isPtr()&&GENERATEPRECISEGC)
 759                 objectparams.addPtr(temp);
 760             else
 761                 objectparams.addPrim(temp);
 762             if(lb!=null&&saveset.contains(temp)) {
 763                 backuptable.put(temp, temp.createNew());
 764             }
 765         }
 766
 767         for(int i=0;i<fm.numTags();i++) {
 768             TempDescriptor temp=fm.getTag(i);
 769             if (GENERATEPRECISEGC)
 770                 objectparams.addPtr(temp);
 771             else
 772                 objectparams.addPrim(temp);
 773         }
 774
 775         TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
 776         if (lb!=null)
 777             tempstable.put(lb, objecttemps);
 778         else if (md!=null)
 779             tempstable.put(md, objecttemps);
 780         else
 781             tempstable.put(task, objecttemps);
 782
 783         for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
 784             FlatNode fn=(FlatNode)nodeit.next();
 785             TempDescriptor[] writes=fn.writesTemps();
 786             for(int i=0;i<writes.length;i++) {
 787                 TempDescriptor temp=writes[i];
 788                 TypeDescriptor type=temp.getType();
 789                 if (type.isPtr()&&GENERATEPRECISEGC)
 790                     objecttemps.addPtr(temp);
 791                 else
 792                     objecttemps.addPrim(temp);
 793                 if(lb!=null&&saveset.contains(temp)&&
 794                    !backuptable.containsKey(temp))
 795                     backuptable.put(temp, temp.createNew());
 796             }
 797         }
 798
 799         /* Create backup temps */
 800         if (lb!=null) {
 801             for(Iterator<TempDescriptor> tmpit=backuptable.values().iterator();tmpit.hasNext();) {
 802                 TempDescriptor tmp=tmpit.next();
 803                 TypeDescriptor type=tmp.getType();
 804                 if (type.isPtr()&&GENERATEPRECISEGC)
 805                     objecttemps.addPtr(tmp);
 806                 else
 807                     objecttemps.addPrim(tmp);
 808             }
 809             /* Create temp to hold revert table */
 810             if (lb.getHasAtomic()) {
 811                 TempDescriptor reverttmp=new TempDescriptor("revertlist", typeutil.getClass(TypeUtil.ObjectClass));
 812                 if (GENERATEPRECISEGC)
 813                     objecttemps.addPtr(reverttmp);
 814                 else
 815                     objecttemps.addPrim(reverttmp);
 816                 reverttable.put(lb, reverttmp);
 817             }
 818         }
 819     }
 820
 821     /** This method outputs the following information about classes
 822      * and arrays:
 823      * (1) For classes, what are the locations of pointers.
 824      * (2) For arrays, does the array contain pointers or primitives.
 825      * (3) For classes, does the class contain flags.
 826      */
 827
 828     private void generateLayoutStructs(PrintWriter output) {
 829         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 830         while(it.hasNext()) {
 831             ClassDescriptor cn=(ClassDescriptor)it.next();
 832             output.println("unsigned int "+cn.getSafeSymbol()+"_pointers[]={");
 833             Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
 834             int count=0;
 835             while(allit.hasNext()) {
 836                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 837                 TypeDescriptor type=fd.getType();
 838                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 839                     continue;
 840                 if (type.isPtr())
 841                     count++;
 842             }
 843             output.print(count);
 844             allit=cn.getFieldTable().getAllDescriptorsIterator();
 845             while(allit.hasNext()) {
 846                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 847                 TypeDescriptor type=fd.getType();
 848                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 849                     continue;
 850                 if (type.isPtr()) {
 851                     output.println(",");
 852                     output.print("((unsigned int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
 853                 }
 854             }
 855             output.println("};");
 856         }
 857         output.println("unsigned int * pointerarray[]={");
 858         boolean needcomma=false;
 859         for(int i=0;i<state.numClasses();i++) {
 860             ClassDescriptor cn=cdarray[i];
 861             if (needcomma)
 862                 output.println(",");
 863             needcomma=true;
 864             output.print(cn.getSafeSymbol()+"_pointers");
 865         }
 866
 867         for(int i=0;i<state.numArrays();i++) {
 868             if (needcomma)
 869                 output.println(", ");
 870             TypeDescriptor tdelement=arraytable[i].dereference();
 871             if (tdelement.isArray()||tdelement.isClass())
 872                 output.print("((unsigned int *)1)");
 873             else
 874                 output.print("0");
 875             needcomma=true;
 876         }
 877
 878         output.println("};");
 879         needcomma=false;
 880         output.println("int hasflags[]={");
 881         for(int i=0;i<state.numClasses();i++) {
 882             ClassDescriptor cn=cdarray[i];
 883             if (needcomma)
 884                 output.println(", ");
 885             needcomma=true;
 886             if (cn.hasFlags())
 887                 output.print("1");
 888             else
 889                 output.print("0");
 890         }
 891         output.println("};");
 892     }
 893
 894     /** Print out table to give us supertypes */
 895     private void generateSuperTypeTable(PrintWriter output) {
 896         output.println("int supertypes[]={");
 897         boolean needcomma=false;
 898         for(int i=0;i<state.numClasses();i++) {
 899             ClassDescriptor cn=cdarray[i];
 900             if (needcomma)
 901                 output.println(",");
 902             needcomma=true;
 903             if (cn.getSuperDesc()!=null) {
 904                 ClassDescriptor cdsuper=cn.getSuperDesc();
 905                 output.print(cdsuper.getId());
 906             } else
 907                 output.print("-1");
 908         }
 909         output.println("};");
 910     }
 911
 912     /** Force consistent field ordering between inherited classes. */
 913
 914     private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
 915
 916         ClassDescriptor sp=cn.getSuperDesc();
 917         if (sp!=null)
 918             printClassStruct(sp, classdefout);
 919
 920         if (!fieldorder.containsKey(cn)) {
 921             Vector fields=new Vector();
 922             fieldorder.put(cn,fields);
 923             Iterator fieldit=cn.getFields();
 924             while(fieldit.hasNext()) {
 925                 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
 926                 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
 927                     fields.add(fd);
 928             }
 929         }
 930         Vector fields=(Vector)fieldorder.get(cn);
 931
 932         for(int i=0;i<fields.size();i++) {
 933             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 934             if (fd.getType().isClass()||fd.getType().isArray())
 935                 classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
 936             else
 937                 classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
 938         }
 939     }
 940
 941
 942     /* Map flags to integers consistently between inherited
 943      * classes. */
 944
 945     private void mapFlags(ClassDescriptor cn) {
 946         ClassDescriptor sp=cn.getSuperDesc();
 947         if (sp!=null)
 948             mapFlags(sp);
 949         int max=0;
 950         if (!flagorder.containsKey(cn)) {
 951             Hashtable flags=new Hashtable();
 952             flagorder.put(cn,flags);
 953             if (sp!=null) {
 954                 Hashtable superflags=(Hashtable)flagorder.get(sp);
 955                 Iterator superflagit=superflags.keySet().iterator();
 956                 while(superflagit.hasNext()) {
 957                     FlagDescriptor fd=(FlagDescriptor)superflagit.next();
 958                     Integer number=(Integer)superflags.get(fd);
 959                     flags.put(fd, number);
 960                     if ((number.intValue()+1)>max)
 961                         max=number.intValue()+1;
 962                 }
 963             }
 964
 965             Iterator flagit=cn.getFlags();
 966             while(flagit.hasNext()) {
 967                 FlagDescriptor fd=(FlagDescriptor)flagit.next();
 968                 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
 969                     flags.put(fd, new Integer(max++));
 970             }
 971         }
 972     }
 973
 974
 975     /** This function outputs (1) structures that parameters are
 976      * passed in (when PRECISE GC is enabled) and (2) function
 977      * prototypes for the methods */
 978
 979     private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
 980         /* Output class structure */
 981         classdefout.println("struct "+cn.getSafeSymbol()+" {");
 982         classdefout.println("  int type;");
 983         if (state.THREAD) {
 984             classdefout.println("  pthread_t tid;");
 985             classdefout.println("  void * lockentry;");
 986             classdefout.println("  int lockcount;");
 987         }
 988
 989         if (state.TASK) {
 990             classdefout.println("  int flag;");
 991             classdefout.println("  void * flagptr;");
 992             if (state.OPTIONAL){
 993                 classdefout.println("  int numfses;");
 994                 classdefout.println("  int * fses;");
 995             }
 996         }
 997         printClassStruct(cn, classdefout);
 998         classdefout.println("};\n");
 999
1000         if (state.DSM) {
1001             /* Cycle through LocalityBindings */
1002             HashSet<MethodDescriptor> nativemethods=new HashSet<MethodDescriptor>();
1003             Set<LocalityBinding> lbset=locality.getClassBindings(cn);
1004             if (lbset!=null) {
1005                 for(Iterator<LocalityBinding> lbit=lbset.iterator();lbit.hasNext();) {
1006                     LocalityBinding lb=lbit.next();
1007                     MethodDescriptor md=lb.getMethod();
1008                     if (md.getModifiers().isNative()) {
1009                         //make sure we only print a native method once
1010                         if (nativemethods.contains(md)) {
1011                             FlatMethod fm=state.getMethodFlat(md);
1012                             generateTempStructs(fm, lb);
1013                             continue;
1014                         } else
1015                             nativemethods.add(md);
1016                     }
1017                     generateMethod(cn, md, lb, headersout, output);
1018                 }
1019             }
1020             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1021                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1022                 if (md.getModifiers().isNative()&&!nativemethods.contains(md)) {
1023                     //Need to build param structure for library code
1024                     FlatMethod fm=state.getMethodFlat(md);
1025                     generateTempStructs(fm, null);
1026                     generateMethodParam(cn, md, null, output);
1027                 }
1028             }
1029
1030         } else
1031             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1032                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1033                 generateMethod(cn, md, null, headersout, output);
1034             }
1035     }
1036
1037     private void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter output) {
1038         /* Output parameter structure */
1039         if (GENERATEPRECISEGC) {
1040             ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1041             if (state.DSM&&lb!=null)
1042                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1043             else
1044                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1045             output.println("  int size;");
1046             output.println("  void * next;");
1047             for(int i=0;i<objectparams.numPointers();i++) {
1048                 TempDescriptor temp=objectparams.getPointer(i);
1049                 output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1050             }
1051             output.println("};\n");
1052         }
1053     }
1054
1055
1056     private void generateMethod(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter headersout, PrintWriter output) {
1057         FlatMethod fm=state.getMethodFlat(md);
1058         generateTempStructs(fm, lb);
1059
1060         ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1061         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md);
1062
1063         generateMethodParam(cn, md, lb, output);
1064
1065         /* Output temp structure */
1066         if (GENERATEPRECISEGC) {
1067             if (state.DSM)
1068                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1069             else
1070                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1071             output.println("  int size;");
1072             output.println("  void * next;");
1073             for(int i=0;i<objecttemps.numPointers();i++) {
1074                 TempDescriptor temp=objecttemps.getPointer(i);
1075                 if (temp.getType().isNull())
1076                     output.println("  void * "+temp.getSafeSymbol()+";");
1077                 else
1078                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1079             }
1080             output.println("};\n");
1081         }
1082
1083         /********* Output method declaration ***********/
1084
1085         /* First the return type */
1086         if (md.getReturnType()!=null) {
1087             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1088                 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1089             else
1090                 headersout.print(md.getReturnType().getSafeSymbol()+" ");
1091         } else
1092             //catch the constructor case
1093             headersout.print("void ");
1094
1095         /* Next the method name */
1096         if (state.DSM) {
1097             headersout.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1098         } else
1099             headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1100
1101         boolean printcomma=false;
1102         if (GENERATEPRECISEGC) {
1103             if (state.DSM) {
1104                 headersout.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1105             } else
1106                 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1107             printcomma=true;
1108         }
1109
1110         if (state.DSM&&lb.isAtomic()) {
1111             if (printcomma)
1112                 headersout.print(", ");
1113             headersout.print("transrecord_t * trans");
1114             printcomma=true;
1115         }
1116
1117         /*  Output parameter list*/
1118         for(int i=0;i<objectparams.numPrimitives();i++) {
1119             TempDescriptor temp=objectparams.getPrimitive(i);
1120             if (printcomma)
1121                 headersout.print(", ");
1122             printcomma=true;
1123             if (temp.getType().isClass()||temp.getType().isArray())
1124                 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1125             else
1126                 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1127         }
1128         headersout.println(");\n");
1129     }
1130
1131
1132     /** This function outputs (1) structures that parameters are
1133      * passed in (when PRECISE GC is enabled) and (2) function
1134      * prototypes for the tasks */
1135
1136     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
1137         /* Cycle through tasks */
1138         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
1139
1140         while(taskit.hasNext()) {
1141             /* Classify parameters */
1142             TaskDescriptor task=(TaskDescriptor)taskit.next();
1143             FlatMethod fm=state.getMethodFlat(task);
1144             generateTempStructs(fm, null);
1145
1146             ParamsObject objectparams=(ParamsObject) paramstable.get(task);
1147             TempObject objecttemps=(TempObject) tempstable.get(task);
1148
1149             /* Output parameter structure */
1150             if (GENERATEPRECISEGC) {
1151                 output.println("struct "+task.getSafeSymbol()+"_params {");
1152
1153                 output.println("  int size;");
1154                 output.println("  void * next;");
1155                 for(int i=0;i<objectparams.numPointers();i++) {
1156                     TempDescriptor temp=objectparams.getPointer(i);
1157                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1158                 }
1159
1160                 output.println("};\n");
1161                 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
1162                     maxtaskparams=objectparams.numPointers()+fm.numTags();
1163                 }
1164             }
1165
1166             /* Output temp structure */
1167             if (GENERATEPRECISEGC) {
1168                 output.println("struct "+task.getSafeSymbol()+"_locals {");
1169                 output.println("  int size;");
1170                 output.println("  void * next;");
1171                 for(int i=0;i<objecttemps.numPointers();i++) {
1172                     TempDescriptor temp=objecttemps.getPointer(i);
1173                     if (temp.getType().isNull())
1174                         output.println("  void * "+temp.getSafeSymbol()+";");
1175                     else if(temp.getType().isTag())
1176                         output.println("  struct "+
1177                                        (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1178                     else
1179                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1180                 }
1181                 output.println("};\n");
1182             }
1183
1184             /* Output task declaration */
1185             headersout.print("void " + task.getSafeSymbol()+"(");
1186
1187             boolean printcomma=false;
1188             if (GENERATEPRECISEGC) {
1189                 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1190             } else
1191                 headersout.print("void * parameterarray[]");
1192             headersout.println(");\n");
1193         }
1194     }
1195
1196     /***** Generate code for FlatMethod fm. *****/
1197
1198     private void generateFlatMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
1199         MethodDescriptor md=fm.getMethod();
1200
1201         TaskDescriptor task=fm.getTask();
1202
1203         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1204
1205         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:md!=null?md:task);
1206         generateHeader(fm, lb, md!=null?md:task,output);
1207         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1208         if (state.DSM&&lb.getHasAtomic()) {
1209             output.println("transrecord_t * trans;");
1210         }
1211
1212         if (GENERATEPRECISEGC) {
1213             if (md!=null&&state.DSM)
1214                 output.print("   struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1215             else if (md!=null&&!state.DSM)
1216                 output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1217             else
1218                 output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
1219
1220             output.print(objecttemp.numPointers()+",");
1221             output.print(paramsprefix);
1222             for(int j=0;j<objecttemp.numPointers();j++)
1223                 output.print(", NULL");
1224             output.println("};");
1225         }
1226
1227         for(int i=0;i<objecttemp.numPrimitives();i++) {
1228             TempDescriptor td=objecttemp.getPrimitive(i);
1229             TypeDescriptor type=td.getType();
1230             if (type.isNull())
1231                 output.println("   void * "+td.getSafeSymbol()+";");
1232             else if (type.isClass()||type.isArray())
1233                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
1234             else
1235                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
1236         }
1237
1238         /* Assign labels to FlatNode's if necessary.*/
1239
1240         Hashtable<FlatNode, Integer> nodetolabel=assignLabels(fm);
1241
1242         /* Check to see if we need to do a GC if this is a
1243          * multi-threaded program...*/
1244
1245         if (state.THREAD&&GENERATEPRECISEGC) {
1246             output.println("checkcollect(&"+localsprefix+");");
1247         }
1248
1249         /* Do the actual code generation */
1250         FlatNode current_node=null;
1251         HashSet tovisit=new HashSet();
1252         HashSet visited=new HashSet();
1253         tovisit.add(fm.getNext(0));
1254         while(current_node!=null||!tovisit.isEmpty()) {
1255             if (current_node==null) {
1256                 current_node=(FlatNode)tovisit.iterator().next();
1257                 tovisit.remove(current_node);
1258             }
1259             visited.add(current_node);
1260             if (nodetolabel.containsKey(current_node))
1261                 output.println("L"+nodetolabel.get(current_node)+":");
1262             if (state.INSTRUCTIONFAILURE) {
1263                 if (state.THREAD) {
1264                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1265                 }
1266                 else
1267                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1268             }
1269             if (current_node.numNext()==0) {
1270                 output.print("   ");
1271                 generateFlatNode(fm, lb, current_node, output);
1272                 if (current_node.kind()!=FKind.FlatReturnNode) {
1273                     output.println("   return;");
1274                 }
1275                 current_node=null;
1276             } else if(current_node.numNext()==1) {
1277                 output.print("   ");
1278                 generateFlatNode(fm, lb, current_node, output);
1279                 FlatNode nextnode=current_node.getNext(0);
1280                 if (visited.contains(nextnode)) {
1281                     output.println("goto L"+nodetolabel.get(nextnode)+";");
1282                     current_node=null;
1283                 } else
1284                     current_node=nextnode;
1285             } else if (current_node.numNext()==2) {
1286                 /* Branch */
1287                 output.print("   ");
1288                 generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1289                 if (!visited.contains(current_node.getNext(1)))
1290                     tovisit.add(current_node.getNext(1));
1291                 if (visited.contains(current_node.getNext(0))) {
1292                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1293                     current_node=null;
1294                 } else
1295                     current_node=current_node.getNext(0);
1296             } else throw new Error();
1297         }
1298
1299         output.println("}\n\n");
1300     }
1301
1302     /** This method assigns labels to FlatNodes */
1303
1304     private Hashtable<FlatNode, Integer> assignLabels(FlatMethod fm) {
1305         HashSet tovisit=new HashSet();
1306         HashSet visited=new HashSet();
1307         int labelindex=0;
1308         Hashtable<FlatNode, Integer> nodetolabel=new Hashtable<FlatNode, Integer>();
1309         tovisit.add(fm.getNext(0));
1310
1311         /*Assign labels first.  A node needs a label if the previous
1312          * node has two exits or this node is a join point. */
1313
1314         while(!tovisit.isEmpty()) {
1315             FlatNode fn=(FlatNode)tovisit.iterator().next();
1316             tovisit.remove(fn);
1317             visited.add(fn);
1318             for(int i=0;i<fn.numNext();i++) {
1319                 FlatNode nn=fn.getNext(i);
1320                 if(i>0) {
1321                     //1) Edge >1 of node
1322                     nodetolabel.put(nn,new Integer(labelindex++));
1323                 }
1324                 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1325                     tovisit.add(nn);
1326                 } else {
1327                     //2) Join point
1328                     nodetolabel.put(nn,new Integer(labelindex++));
1329                 }
1330             }
1331         }
1332         return nodetolabel;
1333     }
1334
1335
1336     /** Generate text string that corresponds to the TempDescriptor td. */
1337     private String generateTemp(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1338         MethodDescriptor md=fm.getMethod();
1339         TaskDescriptor task=fm.getTask();
1340         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1341
1342         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1343             return td.getSafeSymbol();
1344         }
1345
1346         if (objecttemps.isLocalPtr(td)) {
1347             return localsprefix+"."+td.getSafeSymbol();
1348         }
1349
1350         if (objecttemps.isParamPtr(td)) {
1351             return paramsprefix+"->"+td.getSafeSymbol();
1352         }
1353         throw new Error();
1354     }
1355
1356     private void generateFlatNode(FlatMethod fm, LocalityBinding lb, FlatNode fn, PrintWriter output) {
1357         switch(fn.kind()) {
1358         case FKind.FlatAtomicEnterNode:
1359             generateFlatAtomicEnterNode(fm, lb, (FlatAtomicEnterNode) fn, output);
1360             return;
1361         case FKind.FlatAtomicExitNode:
1362             generateFlatAtomicExitNode(fm, lb, (FlatAtomicExitNode) fn, output);
1363             return;
1364         case FKind.FlatGlobalConvNode:
1365             generateFlatGlobalConvNode(fm, lb, (FlatGlobalConvNode) fn, output);
1366             return;
1367         case FKind.FlatTagDeclaration:
1368             generateFlatTagDeclaration(fm, lb, (FlatTagDeclaration) fn,output);
1369             return;
1370         case FKind.FlatCall:
1371             generateFlatCall(fm, lb, (FlatCall) fn,output);
1372             return;
1373         case FKind.FlatFieldNode:
1374             generateFlatFieldNode(fm, lb, (FlatFieldNode) fn,output);
1375             return;
1376         case FKind.FlatElementNode:
1377             generateFlatElementNode(fm, lb, (FlatElementNode) fn,output);
1378             return;
1379         case FKind.FlatSetElementNode:
1380             generateFlatSetElementNode(fm, lb, (FlatSetElementNode) fn,output);
1381             return;
1382         case FKind.FlatSetFieldNode:
1383             generateFlatSetFieldNode(fm, lb, (FlatSetFieldNode) fn,output);
1384             return;
1385         case FKind.FlatNew:
1386             generateFlatNew(fm, lb, (FlatNew) fn,output);
1387             return;
1388         case FKind.FlatOpNode:
1389             generateFlatOpNode(fm, lb, (FlatOpNode) fn,output);
1390             return;
1391         case FKind.FlatCastNode:
1392             generateFlatCastNode(fm, lb, (FlatCastNode) fn,output);
1393             return;
1394         case FKind.FlatLiteralNode:
1395             generateFlatLiteralNode(fm, lb, (FlatLiteralNode) fn,output);
1396             return;
1397         case FKind.FlatReturnNode:
1398             generateFlatReturnNode(fm, lb, (FlatReturnNode) fn,output);
1399             return;
1400         case FKind.FlatNop:
1401             output.println("/* nop */");
1402             return;
1403         case FKind.FlatBackEdge:
1404             if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1405                 output.println("checkcollect(&"+localsprefix+");");
1406             } else
1407                 output.println("/* nop */");
1408             return;
1409         case FKind.FlatCheckNode:
1410             generateFlatCheckNode(fm, lb, (FlatCheckNode) fn, output);
1411             return;
1412         case FKind.FlatFlagActionNode:
1413             generateFlatFlagActionNode(fm, lb, (FlatFlagActionNode) fn, output);
1414             return;
1415         }
1416         throw new Error();
1417
1418     }
1419
1420     public void generateFlatGlobalConvNode(FlatMethod fm, LocalityBinding lb, FlatGlobalConvNode fgcn, PrintWriter output) {
1421         if (lb!=fgcn.getLocality())
1422             return;
1423         /* Have to generate flat globalconv */
1424         if (fgcn.getMakePtr()) {
1425             output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)transRead(trans, (unsigned int) "+generateTemp(fm, fgcn.getSrc(),lb)+");");
1426         } else {
1427             /* Need to convert to OID */
1428             output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)COMPOID("+generateTemp(fm, fgcn.getSrc(),lb)+");");
1429         }
1430     }
1431
1432     public void generateFlatAtomicEnterNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicEnterNode faen, PrintWriter output) {
1433         /* Check to see if we need to generate code for this atomic */
1434         if (locality.getAtomic(lb).get(faen.getPrev(0)).intValue()>0)
1435             return;
1436         /* Backup the temps. */
1437         for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1438             TempDescriptor tmp=tmpit.next();
1439             output.println(generateTemp(fm, backuptable.get(tmp),lb)+"="+generateTemp(fm,tmp,lb)+";");
1440         }
1441         output.println("goto transstart"+faen.getIdentifier()+";");
1442
1443         /******* Print code to retry aborted transaction *******/
1444         output.println("transretry"+faen.getIdentifier()+":");
1445
1446         /* Restore temps */
1447         for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1448             TempDescriptor tmp=tmpit.next();
1449             output.println(generateTemp(fm, tmp,lb)+"="+generateTemp(fm,backuptable.get(tmp),lb)+";");
1450         }
1451
1452         /********* Need to revert local object store ********/
1453         String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1454
1455         output.println("while ("+revertptr+") {");
1456         output.println("struct ___Object___ * tmpptr;");
1457         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1458         output.println("REVERT_OBJ("+revertptr+");");
1459         output.println(revertptr+"=tmpptr;");
1460         output.println("}");
1461
1462         /******* Tell the runtime to start the transaction *******/
1463
1464         output.println("transstart"+faen.getIdentifier()+":");
1465         output.println("trans=transStart();");
1466     }
1467
1468     public void generateFlatAtomicExitNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicExitNode faen, PrintWriter output) {
1469         /* Check to see if we need to generate code for this atomic */
1470         if (locality.getAtomic(lb).get(faen).intValue()>0)
1471             return;
1472         //store the revert list before we lose the transaction object
1473         String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1474         output.println(revertptr+"=trans->revertlist;");
1475         output.println("if (transCommit(trans)) {");
1476         /* Transaction aborts if it returns true */
1477         output.println("goto transretry"+faen.getAtomicEnter().getIdentifier()+";");
1478         output.println("} else {");
1479         /* Need to commit local object store */
1480         output.println("while ("+revertptr+") {");
1481         output.println("struct ___Object___ * tmpptr;");
1482         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1483         output.println("COMMIT_OBJ("+revertptr+");");
1484         output.println(revertptr+"=tmpptr;");
1485         output.println("}");
1486         output.println("}");
1487     }
1488
1489     private void generateFlatCheckNode(FlatMethod fm,  LocalityBinding lb, FlatCheckNode fcn, PrintWriter output) {
1490         if (state.CONSCHECK) {
1491             String specname=fcn.getSpec();
1492             String varname="repairstate___";
1493             output.println("{");
1494             output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1495
1496             TempDescriptor[] temps=fcn.getTemps();
1497             String[] vars=fcn.getVars();
1498             for(int i=0;i<temps.length;i++) {
1499                 output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i],lb)+";");
1500             }
1501
1502             output.println("if (doanalysis"+specname+"("+varname+")) {");
1503             output.println("free"+specname+"_state("+varname+");");
1504             output.println("} else {");
1505             output.println("/* Bad invariant */");
1506             output.println("free"+specname+"_state("+varname+");");
1507             output.println("abort_task();");
1508             output.println("}");
1509             output.println("}");
1510         }
1511     }
1512
1513     private void generateFlatCall(FlatMethod fm, LocalityBinding lb, FlatCall fc, PrintWriter output) {
1514         MethodDescriptor md=fc.getMethod();
1515         ParamsObject objectparams=(ParamsObject)paramstable.get(state.DSM?locality.getBinding(lb, fc):md);
1516         ClassDescriptor cn=md.getClassDesc();
1517         output.println("{");
1518         if (GENERATEPRECISEGC) {
1519             if (state.DSM) {
1520                 LocalityBinding fclb=locality.getBinding(lb, fc);
1521                 output.print("       struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1522             } else
1523                 output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1524
1525             output.print(objectparams.numPointers());
1526             output.print(", & "+localsprefix);
1527             if (fc.getThis()!=null) {
1528                 output.print(", ");
1529                 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis(),lb));
1530             }
1531             for(int i=0;i<fc.numArgs();i++) {
1532                 Descriptor var=md.getParameter(i);
1533                 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1534                 if (objectparams.isParamPtr(paramtemp)) {
1535                     TempDescriptor targ=fc.getArg(i);
1536                     output.print(", ");
1537                     TypeDescriptor td=md.getParamType(i);
1538                     if (td.isTag())
1539                         output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1540                     else
1541                         output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1542                 }
1543             }
1544             output.println("};");
1545         }
1546         output.print("       ");
1547
1548
1549         if (fc.getReturnTemp()!=null)
1550             output.print(generateTemp(fm,fc.getReturnTemp(),lb)+"=");
1551
1552         /* Do we need to do virtual dispatch? */
1553         if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1554             //no
1555             if (state.DSM) {
1556                 LocalityBinding fclb=locality.getBinding(lb, fc);
1557                 output.print(cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1558             } else {
1559                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1560             }
1561         } else {
1562             //yes
1563             output.print("((");
1564             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1565                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1566             else
1567                 output.print(md.getReturnType().getSafeSymbol()+" ");
1568             output.print("(*)(");
1569
1570             boolean printcomma=false;
1571             if (GENERATEPRECISEGC) {
1572                 if (state.DSM) {
1573                     LocalityBinding fclb=locality.getBinding(lb, fc);
1574                     output.print("struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1575                 } else
1576                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1577                 printcomma=true;
1578             }
1579
1580             for(int i=0;i<objectparams.numPrimitives();i++) {
1581                 TempDescriptor temp=objectparams.getPrimitive(i);
1582                 if (printcomma)
1583                     output.print(", ");
1584                 printcomma=true;
1585                 if (temp.getType().isClass()||temp.getType().isArray())
1586                     output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1587                 else
1588                     output.print(temp.getType().getSafeSymbol());
1589             }
1590
1591             if (state.DSM) {
1592                 LocalityBinding fclb=locality.getBinding(lb, fc);
1593                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getLocalityNumber(fclb)+"])");
1594             } else
1595                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1596         }
1597
1598         output.print("(");
1599         boolean needcomma=false;
1600         if (GENERATEPRECISEGC) {
1601             output.print("&__parameterlist__");
1602             needcomma=true;
1603         }
1604
1605         if (state.DSM&&locality.getBinding(lb,fc).isAtomic()) {
1606             if (needcomma)
1607                 output.print(",");
1608             output.print("trans");
1609             needcomma=true;
1610         }
1611
1612         if (!GENERATEPRECISEGC) {
1613             if (fc.getThis()!=null) {
1614                 TypeDescriptor ptd=md.getThis().getType();
1615                 if (needcomma)
1616                     output.print(",");
1617                 if (ptd.isClass()&&!ptd.isArray())
1618                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1619                 output.print(generateTemp(fm,fc.getThis(),lb));
1620                 needcomma=true;
1621             }
1622         }
1623
1624         for(int i=0;i<fc.numArgs();i++) {
1625             Descriptor var=md.getParameter(i);
1626             TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1627             if (objectparams.isParamPrim(paramtemp)) {
1628                 TempDescriptor targ=fc.getArg(i);
1629                 if (needcomma)
1630                     output.print(", ");
1631
1632                 TypeDescriptor ptd=md.getParamType(i);
1633                 if (ptd.isClass()&&!ptd.isArray())
1634                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1635                 output.print(generateTemp(fm, targ,lb));
1636                 needcomma=true;
1637             }
1638         }
1639         output.println(");");
1640         output.println("   }");
1641     }
1642
1643     private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1644         Set subclasses=typeutil.getSubClasses(thiscd);
1645         if (subclasses==null)
1646             return true;
1647         for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1648             ClassDescriptor cd=(ClassDescriptor)classit.next();
1649             Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1650             for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1651                 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1652                 if (md.matches(matchmd))
1653                     return false;
1654             }
1655         }
1656         return true;
1657     }
1658
1659     private void generateFlatFieldNode(FlatMethod fm, LocalityBinding lb, FlatFieldNode ffn, PrintWriter output) {
1660         if (state.DSM) {
1661             Integer status=locality.getNodePreTempInfo(lb,ffn).get(ffn.getSrc());
1662             if (status==LocalityAnalysis.GLOBAL) {
1663                 String field=ffn.getField().getSafeSymbol();
1664                 String src=generateTemp(fm, ffn.getSrc(),lb);
1665                 String dst=generateTemp(fm, ffn.getDst(),lb);
1666
1667                 if (ffn.getField().getType().isPtr()) {
1668
1669                     //TODO: Uncomment this when we have runtime support
1670                     //if (ffn.getSrc()==ffn.getDst()) {
1671                     //output.println("{");
1672                     //output.println("void * temp="+src+";");
1673                     //output.println("if (temp&0x1) {");
1674                     //output.println("temp=(void *) transRead(trans, (unsigned int) temp);");
1675                     //output.println(src+"->"+field+"="+temp+";");
1676                     //output.println("}");
1677                     //output.println(dst+"=temp;");
1678                     //output.println("}");
1679                     //} else {
1680                     output.println(dst+"="+ src +"->"+field+ ";");
1681                     //output.println("if ("+dst+"&0x1) {");
1682                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
1683                     //output.println(src+"->"+field+"="+src+"->"+field+";");
1684                     //output.println("}");
1685                     //}
1686                 } else {
1687                     output.println(dst+"="+ src+"->"+field+";");
1688                 }
1689             } else if (status==LocalityAnalysis.LOCAL) {
1690                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1691             } else if (status==LocalityAnalysis.EITHER) {
1692                 //Code is reading from a null pointer
1693                 output.println("if ("+generateTemp(fm, ffn.getSrc(),lb)+") {");
1694                 output.println("printf(\"BIG ERROR\n\");exit(-1);}");
1695                 //This should throw a suitable null pointer error
1696                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1697             } else
1698                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
1699         } else
1700             output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
1701     }
1702
1703     private void generateFlatSetFieldNode(FlatMethod fm, LocalityBinding lb, FlatSetFieldNode fsfn, PrintWriter output) {
1704         if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
1705             throw new Error("Can't set array length");
1706         if (state.DSM && locality.getAtomic(lb).get(fsfn).intValue()>0) {
1707             Integer statussrc=locality.getNodePreTempInfo(lb,fsfn).get(fsfn.getSrc());
1708             Integer statusdst=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
1709             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
1710
1711             String src=generateTemp(fm,fsfn.getSrc(),lb);
1712             String dst=generateTemp(fm,fsfn.getDst(),lb);
1713             if (srcglobal) {
1714                 output.println("{");
1715                 output.println("int srcoid="+src+"->"+oidstr+";");
1716             }
1717             if (statusdst.equals(LocalityAnalysis.GLOBAL)) {
1718                 String glbdst=dst;
1719                 //mark it dirty
1720                 output.println("*((unsigned int *)&("+dst+"->___localcopy___))|=DIRTY;");
1721                 if (srcglobal) {
1722                     output.println("*((unsigned int *)&("+glbdst+"->"+ fsfn.getField().getSafeSymbol()+"))=srcoid;");
1723                     output.println("}");
1724                 } else
1725                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
1726             } else if (statusdst.equals(LocalityAnalysis.LOCAL)) {
1727                 /** Check if we need to copy */
1728                 output.println("if(!"+dst+"->"+localcopystr+") {");
1729                 /* Link object into list */
1730                 output.println(dst+"->"+nextobjstr+"=trans->localtrans;");
1731                 output.println("trans->localtrans="+dst+";");
1732                 if (GENERATEPRECISEGC)
1733                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
1734                 else
1735                     output.println("COPY_OBJ("+dst+");");
1736                 output.println("}");
1737                 if (srcglobal)
1738                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
1739                 else
1740                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
1741             } else if (statusdst.equals(LocalityAnalysis.EITHER)) {
1742                 //writing to a null...bad
1743                 output.println("if ("+dst+") {");
1744                 output.println("printf(\"BIG ERROR 2\n\");exit(-1);}");
1745                 if (srcglobal)
1746                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
1747                 else
1748                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
1749             }
1750             if (srcglobal) {
1751                 output.println("}");
1752             }
1753         } else {
1754             output.println(generateTemp(fm, fsfn.getDst(),lb)+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc(),lb)+";");
1755         }
1756     }
1757
1758     private void generateFlatElementNode(FlatMethod fm, LocalityBinding lb, FlatElementNode fen, PrintWriter output) {
1759         TypeDescriptor elementtype=fen.getSrc().getType().dereference();
1760         String type="";
1761
1762         if (elementtype.isArray()||elementtype.isClass())
1763             type="void *";
1764         else
1765             type=elementtype.getSafeSymbol()+" ";
1766
1767         if (fen.needsBoundsCheck()) {
1768             output.println("if ("+generateTemp(fm, fen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fen.getIndex(),lb)+" >= "+generateTemp(fm,fen.getSrc(),lb) + "->___length___)");
1769             output.println("failedboundschk();");
1770         }
1771
1772         output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
1773     }
1774
1775     private void generateFlatSetElementNode(FlatMethod fm, LocalityBinding lb, FlatSetElementNode fsen, PrintWriter output) {
1776         //TODO: need dynamic check to make sure this assignment is actually legal
1777         //Because Object[] could actually be something more specific...ie. Integer[]
1778
1779         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
1780         String type="";
1781
1782         if (elementtype.isArray()||elementtype.isClass())
1783             type="void *";
1784         else
1785             type=elementtype.getSafeSymbol()+" ";
1786
1787         if (fsen.needsBoundsCheck()) {
1788             output.println("if ("+generateTemp(fm, fsen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fsen.getIndex(),lb)+" >= "+generateTemp(fm,fsen.getDst(),lb) + "->___length___)");
1789             output.println("failedboundschk();");
1790         }
1791
1792         output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
1793     }
1794
1795     private void generateFlatNew(FlatMethod fm, LocalityBinding lb, FlatNew fn, PrintWriter output) {
1796         if (fn.getType().isArray()) {
1797             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
1798             if (fn.isGlobal()) {
1799                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarrayglobal(trans, "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
1800             } else if (GENERATEPRECISEGC) {
1801                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
1802             } else {
1803                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
1804             }
1805         } else {
1806             if (fn.isGlobal()) {
1807                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newglobal(trans, "+fn.getType().getClassDesc().getId()+");");
1808             } else if (GENERATEPRECISEGC) {
1809                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
1810             } else {
1811                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
1812             }
1813         }
1814     }
1815
1816     private void generateFlatTagDeclaration(FlatMethod fm, LocalityBinding lb, FlatTagDeclaration fn, PrintWriter output) {
1817         if (GENERATEPRECISEGC) {
1818             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
1819         } else {
1820             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag("+state.getTagId(fn.getType())+");");
1821         }
1822     }
1823
1824     private void generateFlatOpNode(FlatMethod fm, LocalityBinding lb, FlatOpNode fon, PrintWriter output) {
1825         if (fon.getRight()!=null)
1826             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+fon.getOp().toString()+generateTemp(fm,fon.getRight(),lb)+";");
1827         else if (fon.getOp().getOp()==Operation.ASSIGN)
1828             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
1829         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
1830             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
1831         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
1832             output.println(generateTemp(fm, fon.getDest(),lb)+" = -"+generateTemp(fm, fon.getLeft(),lb)+";");
1833         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
1834             output.println(generateTemp(fm, fon.getDest(),lb)+" = !"+generateTemp(fm, fon.getLeft(),lb)+";");
1835         else if (fon.getOp().getOp()==Operation.ISAVAILABLE) {
1836             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+"->fses==NULL;");
1837         } else
1838             output.println(generateTemp(fm, fon.getDest(),lb)+fon.getOp().toString()+generateTemp(fm, fon.getLeft(),lb)+";");
1839     }
1840
1841     private void generateFlatCastNode(FlatMethod fm, LocalityBinding lb, FlatCastNode fcn, PrintWriter output) {
1842         /* TODO: Do type check here */
1843         if (fcn.getType().isArray()) {
1844             throw new Error();
1845         } else if (fcn.getType().isClass())
1846             output.println(generateTemp(fm,fcn.getDst(),lb)+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc(),lb)+";");
1847         else
1848             output.println(generateTemp(fm,fcn.getDst(),lb)+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc(),lb)+";");
1849     }
1850
1851     private void generateFlatLiteralNode(FlatMethod fm, LocalityBinding lb, FlatLiteralNode fln, PrintWriter output) {
1852         if (fln.getValue()==null)
1853             output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
1854         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
1855             if (GENERATEPRECISEGC) {
1856                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1857             } else {
1858                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
1859             }
1860         } else if (fln.getType().isBoolean()) {
1861             if (((Boolean)fln.getValue()).booleanValue())
1862                 output.println(generateTemp(fm, fln.getDst(),lb)+"=1;");
1863             else
1864                 output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
1865         } else if (fln.getType().isChar()) {
1866             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
1867             output.println(generateTemp(fm, fln.getDst(),lb)+"='"+st+"';");
1868         } else
1869             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+";");
1870     }
1871
1872     private void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
1873         if (frn.getReturnTemp()!=null) {
1874             if (frn.getReturnTemp().getType().isPtr())
1875                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
1876             else
1877                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
1878         } else
1879             output.println("return;");
1880     }
1881
1882     private void generateFlatCondBranch(FlatMethod fm, LocalityBinding lb, FlatCondBranch fcb, String label, PrintWriter output) {
1883         output.println("if (!"+generateTemp(fm, fcb.getTest(),lb)+") goto "+label+";");
1884     }
1885
1886     /** This method generates header information for the method or
1887      * task referenced by the Descriptor des. */
1888
1889     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
1890         /* Print header */
1891         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
1892         MethodDescriptor md=null;
1893         TaskDescriptor task=null;
1894         if (des instanceof MethodDescriptor)
1895             md=(MethodDescriptor) des;
1896         else
1897             task=(TaskDescriptor) des;
1898
1899         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1900
1901         if (md!=null&&md.getReturnType()!=null) {
1902             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1903                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1904             else
1905                 output.print(md.getReturnType().getSafeSymbol()+" ");
1906         } else
1907             //catch the constructor case
1908             output.print("void ");
1909         if (md!=null) {
1910             if (state.DSM) {
1911                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1912             } else
1913                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1914         } else
1915             output.print(task.getSafeSymbol()+"(");
1916
1917         boolean printcomma=false;
1918         if (GENERATEPRECISEGC) {
1919             if (md!=null) {
1920                 if (state.DSM) {
1921                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1922                 } else
1923                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1924             } else
1925                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1926             printcomma=true;
1927         }
1928
1929         if (state.DSM&&lb.isAtomic()) {
1930             if (printcomma)
1931                 output.print(", ");
1932             output.print("transrecord_t * trans");
1933             printcomma=true;
1934         }
1935
1936         if (md!=null) {
1937             /* Method */
1938             for(int i=0;i<objectparams.numPrimitives();i++) {
1939                 TempDescriptor temp=objectparams.getPrimitive(i);
1940                 if (printcomma)
1941                     output.print(", ");
1942                 printcomma=true;
1943                 if (temp.getType().isClass()||temp.getType().isArray())
1944                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1945                 else
1946                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1947             }
1948             output.println(") {");
1949         } else if (!GENERATEPRECISEGC) {
1950             /* Imprecise Task */
1951             output.println("void * parameterarray[]) {");
1952             /* Unpack variables */
1953             for(int i=0;i<objectparams.numPrimitives();i++) {
1954                 TempDescriptor temp=objectparams.getPrimitive(i);
1955                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
1956             }
1957             for(int i=0;i<fm.numTags();i++) {
1958                 TempDescriptor temp=fm.getTag(i);
1959                 int offset=i+objectparams.numPrimitives();
1960                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
1961             }
1962
1963             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
1964                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
1965         } else output.println(") {");
1966     }
1967
1968     public void generateFlatFlagActionNode(FlatMethod fm, LocalityBinding lb, FlatFlagActionNode ffan, PrintWriter output) {
1969         output.println("/* FlatFlagActionNode */");
1970
1971
1972         /* Process tag changes */
1973         Relation tagsettable=new Relation();
1974         Relation tagcleartable=new Relation();
1975
1976         Iterator tagsit=ffan.getTempTagPairs();
1977         while (tagsit.hasNext()) {
1978             TempTagPair ttp=(TempTagPair) tagsit.next();
1979             TempDescriptor objtmp=ttp.getTemp();
1980             TagDescriptor tag=ttp.getTag();
1981             TempDescriptor tagtmp=ttp.getTagTemp();
1982             boolean tagstatus=ffan.getTagChange(ttp);
1983             if (tagstatus) {
1984                 tagsettable.put(objtmp, tagtmp);
1985             } else {
1986                 tagcleartable.put(objtmp, tagtmp);
1987             }
1988         }
1989
1990
1991         Hashtable flagandtable=new Hashtable();
1992         Hashtable flagortable=new Hashtable();
1993
1994         /* Process flag changes */
1995         Iterator flagsit=ffan.getTempFlagPairs();
1996         while(flagsit.hasNext()) {
1997             TempFlagPair tfp=(TempFlagPair)flagsit.next();
1998             TempDescriptor temp=tfp.getTemp();
1999             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
2000             FlagDescriptor flag=tfp.getFlag();
2001             if (flag==null) {
2002                 //Newly allocate objects that don't set any flags case
2003                 if (flagortable.containsKey(temp)) {
2004                     throw new Error();
2005                 }
2006                 int mask=0;
2007                 flagortable.put(temp,new Integer(mask));
2008             } else {
2009                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
2010                 boolean flagstatus=ffan.getFlagChange(tfp);
2011                 if (flagstatus) {
2012                     int mask=0;
2013                     if (flagortable.containsKey(temp)) {
2014                         mask=((Integer)flagortable.get(temp)).intValue();
2015                     }
2016                     mask|=flagid;
2017                     flagortable.put(temp,new Integer(mask));
2018                 } else {
2019                     int mask=0xFFFFFFFF;
2020                     if (flagandtable.containsKey(temp)) {
2021                         mask=((Integer)flagandtable.get(temp)).intValue();
2022                     }
2023                     mask&=(0xFFFFFFFF^flagid);
2024                     flagandtable.put(temp,new Integer(mask));
2025                 }
2026             }
2027         }
2028
2029
2030         HashSet flagtagset=new HashSet();
2031         flagtagset.addAll(flagortable.keySet());
2032         flagtagset.addAll(flagandtable.keySet());
2033         flagtagset.addAll(tagsettable.keySet());
2034         flagtagset.addAll(tagcleartable.keySet());
2035
2036         Iterator ftit=flagtagset.iterator();
2037         while(ftit.hasNext()) {
2038             TempDescriptor temp=(TempDescriptor)ftit.next();
2039
2040
2041             Set tagtmps=tagcleartable.get(temp);
2042             if (tagtmps!=null) {
2043                 Iterator tagit=tagtmps.iterator();
2044                 while(tagit.hasNext()) {
2045                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2046                     if (GENERATEPRECISEGC)
2047                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2048                     else
2049                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2050                 }
2051             }
2052
2053             tagtmps=tagsettable.get(temp);
2054             if (tagtmps!=null) {
2055                 Iterator tagit=tagtmps.iterator();
2056                 while(tagit.hasNext()) {
2057                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2058                     if (GENERATEPRECISEGC)
2059                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2060                     else
2061                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp, lb)+", "+generateTemp(fm,tagtmp, lb)+");");
2062                 }
2063             }
2064
2065             int ormask=0;
2066             int andmask=0xFFFFFFF;
2067
2068             if (flagortable.containsKey(temp))
2069                 ormask=((Integer)flagortable.get(temp)).intValue();
2070             if (flagandtable.containsKey(temp))
2071                 andmask=((Integer)flagandtable.get(temp)).intValue();
2072             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2073                 output.println("flagorandinit("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2074             } else {
2075                 output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2076             }
2077         }
2078     }
2079
2080     void generateOptionalHeader(PrintWriter headers) {
2081
2082          //GENERATE HEADERS
2083          headers.println("#include \"task.h\"\n\n");
2084          headers.println("#ifndef _OPTIONAL_STRUCT_");
2085          headers.println("#define _OPTIONAL_STRUCT_");
2086
2087          //STRUCT PREDICATEMEMBER
2088          headers.println("struct predicatemember{");
2089          headers.println("int type;");
2090          headers.println("int numdnfterms;");
2091          headers.println("int * flags;");
2092          headers.println("int numtags;");
2093          headers.println("int * tags;\n};\n\n");
2094
2095          //STRUCT OPTIONALTASKDESCRIPTOR
2096          headers.println("struct optionaltaskdescriptor{");
2097          headers.println("struct taskdescriptor * task;");
2098          headers.println("int index;");
2099          headers.println("int numenterflags;");
2100          headers.println("int * enterflags;");
2101          headers.println("int numpredicatemembers;");
2102          headers.println("struct predicatemember ** predicatememberarray;");
2103          headers.println("};\n\n");
2104
2105          //STRUCT TASKFAILURE
2106          headers.println("struct taskfailure {");
2107          headers.println("struct taskdescriptor * task;");
2108          headers.println("int index;");
2109          headers.println("int numoptionaltaskdescriptors;");
2110          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2111
2112          //STRUCT FSANALYSISWRAPPER
2113          headers.println("struct fsanalysiswrapper{");
2114          headers.println("int  flags;");
2115          headers.println("int numtags;");
2116          headers.println("int * tags;");
2117          headers.println("int numtaskfailures;");
2118          headers.println("struct taskfailure ** taskfailurearray;");
2119          headers.println("int numoptionaltaskdescriptors;");
2120          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2121
2122          //STRUCT CLASSANALYSISWRAPPER
2123          headers.println("struct classanalysiswrapper{");
2124          headers.println("int type;");
2125          headers.println("int numotd;");
2126          headers.println("struct optionaltaskdescriptor ** otdarray;");
2127          headers.println("int numfsanalysiswrappers;");
2128          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};");
2129
2130          headers.println("extern struct classanalysiswrapper * classanalysiswrapperarray[];");
2131
2132          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2133          while(taskit.hasNext()) {
2134              TaskDescriptor td=(TaskDescriptor)taskit.next();
2135              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2136          }
2137
2138     }
2139
2140     //CHECK OVER THIS -- THERE COULD BE SOME ERRORS HERE
2141     int generateOptionalPredicate(Predicate predicate, OptionalTaskDescriptor otd, ClassDescriptor cdtemp, PrintWriter output) {
2142         int predicateindex = 0;
2143         //iterate through the classes concerned by the predicate
2144         Set c_vard = predicate.vardescriptors;
2145         Hashtable<TempDescriptor, Integer> slotnumber=new Hashtable<TempDescriptor, Integer>();
2146         int current_slot=0;
2147
2148         for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2149             VarDescriptor vard = (VarDescriptor)vard_it.next();
2150             TypeDescriptor typed = vard.getType();
2151
2152             //generate for flags
2153             HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2154             output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2155             int numberterms=0;
2156             if (fen_hashset!=null){
2157                 for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2158                     FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2159                     if (fen!=null) {
2160                         DNFFlag dflag=fen.getDNF();
2161                         numberterms+=dflag.size();
2162
2163                         Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2164
2165                         for(int j=0;j<dflag.size();j++) {
2166                             if (j!=0)
2167                                 output.println(",");
2168                             Vector term=dflag.get(j);
2169                             int andmask=0;
2170                             int checkmask=0;
2171                             for(int k=0;k<term.size();k++) {
2172                                 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2173                                 FlagDescriptor fd=dfa.getFlag();
2174                                 boolean negated=dfa.getNegated();
2175                                 int flagid=1<<((Integer)flags.get(fd)).intValue();
2176                                 andmask|=flagid;
2177                                 if (!negated)
2178                                     checkmask|=flagid;
2179                             }
2180                             output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2181                         }
2182                     }
2183                 }
2184             }
2185             output.println("};\n");
2186
2187             //generate for tags
2188             TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2189             output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2190             int numtags = 0;
2191             if (tagel!=null){
2192                 for(int j=0;j<tagel.numTags();j++) {
2193                     if (j!=0)
2194                         output.println(",");
2195                     TempDescriptor tmp=tagel.getTemp(j);
2196                     if (!slotnumber.containsKey(tmp)) {
2197                         Integer slotint=new Integer(current_slot++);
2198                         slotnumber.put(tmp,slotint);
2199                     }
2200                     int slot=slotnumber.get(tmp).intValue();
2201                     output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
2202                 }
2203                 numtags = tagel.numTags();
2204             }
2205             output.println("};");
2206
2207             //store the result into a predicatemember struct
2208             output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2209             output.println("/*type*/"+typed.getClassDesc().getId()+",");
2210             output.println("/* number of dnf terms */"+numberterms+",");
2211             output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2212             output.println("/* number of tag */"+numtags+",");
2213             output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2214             output.println("};\n");
2215             predicateindex++;
2216         }
2217
2218
2219         //generate an array that stores the entire predicate
2220         output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2221         for( int j = 0; j<predicateindex; j++){
2222             if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2223             else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2224         }
2225         output.println("};\n");
2226         return predicateindex;
2227     }
2228
2229
2230      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, Set<OptionalTaskDescriptor>>> safeexecution, Hashtable optionaltaskdescriptors) {
2231          generateOptionalHeader(headers);
2232          //GENERATE STRUCTS
2233          output.println("#include \"optionalstruct.h\"\n\n");
2234          output.println("#include \"stdlib.h\"\n");
2235
2236          HashSet processedcd = new HashSet();
2237          int maxotd=0;
2238          Enumeration e = safeexecution.keys();
2239          while (e.hasMoreElements()) {
2240              int numotd=0;
2241              //get the class
2242              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2243              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2244
2245              //Generate the struct of optionals
2246              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2247              numotd = c_otd.size();
2248              if(maxotd<numotd) maxotd = numotd;
2249              if( !c_otd.isEmpty() ){
2250                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2251                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2252
2253                      //generate the int arrays for the predicate
2254                      Predicate predicate = otd.predicate;
2255                      int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
2256                      TreeSet<Integer> fsset=new TreeSet<Integer>();
2257                      //iterate through possible FSes corresponding to
2258                      //the state when entering
2259
2260                      for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext();){
2261                          FlagState fs = (FlagState)fses.next();
2262                          int flagid=0;
2263                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2264                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2265                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2266                              flagid|=id;
2267                          }
2268                          fsset.add(new Integer(flagid));
2269                          //tag information not needed because tag
2270                          //changes are not tolerated.
2271                      }
2272
2273                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2274                      boolean needcomma=false;
2275                      for(Iterator<Integer> it=fsset.iterator();it.hasNext();) {
2276                          if(needcomma)
2277                              output.print(", ");
2278                          output.println(it.next());
2279                      }
2280
2281                      output.println("};\n");
2282
2283
2284                      //generate optionaltaskdescriptor that actually
2285                      //includes exit fses, predicate and the task
2286                      //concerned
2287                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2288                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2289                      output.println("/*index*/"+otd.getIndex()+",");
2290                      output.println("/*number of enter flags*/"+fsset.size()+",");
2291                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2292                      output.println("/*number of members */"+predicateindex+",");
2293                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2294                      output.println("};\n");
2295                  }
2296              } else
2297                  continue;
2298                      // if there is no optionals, there is no need to build the rest of the struct
2299
2300              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2301              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2302              if( !c_otd.isEmpty() ){
2303                  boolean needcomma=false;
2304                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2305                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2306                      if(needcomma)
2307                          output.println(",");
2308                      needcomma=true;
2309                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2310                  }
2311              }
2312              output.println("};\n");
2313
2314              //get all the possible flagstates reachable by an object
2315              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2316              int fscounter = 0;
2317              TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
2318              fsts.addAll(hashtbtemp.keySet());
2319              for(Iterator fsit=fsts.iterator();fsit.hasNext();) {
2320                  FlagState fs = (FlagState)fsit.next();
2321                  fscounter++;
2322
2323                  //get the set of OptionalTaskDescriptors corresponding
2324                  HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
2325                  //iterate through the OptionalTaskDescriptors and
2326                  //store the pointers to the optionals struct (see on
2327                  //top) into an array
2328
2329                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2330                  for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext();){
2331                      OptionalTaskDescriptor mm = mos.next();
2332                      if(!mos.hasNext())
2333                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2334                      else
2335                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2336                  }
2337
2338                  output.println("};\n");
2339
2340                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2341
2342                  int flagid=0;
2343                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2344                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2345                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2346                      flagid|=id;
2347                  }
2348
2349                  //process tag information
2350
2351                  int tagcounter = 0;
2352                  boolean first = true;
2353                  Enumeration tag_enum = fs.getTags();
2354                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2355                  while(tag_enum.hasMoreElements()){
2356                      tagcounter++;
2357                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2358                      if(first==true)
2359                          first = false;
2360                      else
2361                          output.println(", ");
2362                      output.println("/*tagid*/"+state.getTagId(tagd));
2363                  }
2364                  output.println("};");
2365
2366                  Set<TaskIndex> tiset=sa.getTaskIndex(fs);
2367                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2368                      TaskIndex ti=itti.next();
2369                      if (ti.isRuntime())
2370                          continue;
2371
2372                      Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
2373
2374                      output.print("struct optionaltaskdescriptor * optionaltaskfailure_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
2375                      boolean needcomma=false;
2376                      for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator();otdit.hasNext();) {
2377                          OptionalTaskDescriptor otd=otdit.next();
2378                          if(needcomma)
2379                              output.print(", ");
2380                          needcomma=true;
2381                          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2382                      }
2383                      output.println("};");
2384
2385                      output.print("struct taskfailure taskfailure_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
2386                      output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
2387                      output.print(ti.getIndex()+", ");
2388                      output.print(otdset.size()+", ");
2389                      output.print("optionaltaskfailure_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
2390                      output.println("};");
2391                  }
2392
2393                  tiset=sa.getTaskIndex(fs);
2394                  boolean needcomma=false;
2395                  int runtimeti=0;
2396                  output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2397                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2398                      TaskIndex ti=itti.next();
2399                      if (ti.isRuntime()) {
2400                          runtimeti++;
2401                          continue;
2402                      }
2403                      if (needcomma)
2404                          output.print(", ");
2405                      needcomma=true;
2406                      output.print("&taskfailure_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
2407                  }
2408                  output.println("};\n");
2409
2410                  //Store the result in fsanalysiswrapper
2411
2412                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2413                  output.println("/*flag*/"+flagid+",");
2414                  output.println("/* number of tags*/"+tagcounter+",");
2415                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2416                  output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
2417                  output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2418                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2419                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2420                  output.println("};\n");
2421
2422              }
2423
2424              //Build the array of fsanalysiswrappers
2425              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2426              boolean needcomma=false;
2427              for(int i = 0; i<fscounter; i++){
2428                  if (needcomma) output.print(",");
2429                  output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
2430                  needcomma=true;
2431              }
2432              output.println("};");
2433
2434              //Build the classanalysiswrapper referring to the previous array
2435              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2436              output.println("/*type*/"+cdtemp.getId()+",");
2437              output.println("/*numotd*/"+numotd+",");
2438              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2439              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2440              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2441              processedcd.add(cdtemp);
2442          }
2443
2444          //build an array containing every classes for which code has been build
2445          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2446          for(int i=0;i<state.numClasses();i++) {
2447              ClassDescriptor cn=cdarray[i];
2448              if (i>0)
2449                  output.print(", ");
2450              if (processedcd.contains(cn))
2451                  output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
2452              else
2453                  output.print("NULL");
2454          }
2455          output.println("};");
2456
2457          output.println("#define MAXOTD "+maxotd);
2458          headers.println("#endif");
2459      }
2460
2461     public List<OptionalTaskDescriptor> ordertd(Set<OptionalTaskDescriptor> otdset) {
2462         Relation r=new Relation();
2463         for(Iterator<OptionalTaskDescriptor>otdit=otdset.iterator();otdit.hasNext();) {
2464             OptionalTaskDescriptor otd=otdit.next();
2465             TaskIndex ti=new TaskIndex(otd.td, otd.getIndex());
2466             r.put(ti, otd);
2467         }
2468
2469         LinkedList<OptionalTaskDescriptor> l=new LinkedList<OptionalTaskDescriptor>();
2470         for(Iterator it=r.keySet().iterator();it.hasNext();) {
2471             Set s=r.get(it.next());
2472             for(Iterator it2=s.iterator();it2.hasNext();) {
2473                 OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
2474                 l.add(otd);
2475             }
2476         }
2477
2478         return l;
2479     }
2480 }
2481
2482
2483
2484
2485
2486