Robust/src/IR/Flat/BuildCode.java

   1 package IR.Flat;
   2 import IR.Tree.FlagExpressionNode;
   3 import IR.Tree.DNFFlag;
   4 import IR.Tree.DNFFlagAtom;
   5 import IR.Tree.TagExpressionList;
   6 import IR.*;
   7 import java.util.*;
   8 import java.io.*;
   9 import Util.Relation;
  10 import Analysis.TaskStateAnalysis.FlagState;
  11 import Analysis.TaskStateAnalysis.FlagComparator;
  12 import Analysis.TaskStateAnalysis.OptionalTaskDescriptor;
  13 import Analysis.TaskStateAnalysis.Predicate;
  14 import Analysis.TaskStateAnalysis.SafetyAnalysis;
  15 import Analysis.TaskStateAnalysis.TaskIndex;
  16 import Analysis.Locality.LocalityAnalysis;
  17 import Analysis.Locality.LocalityBinding;
  18 import Analysis.Prefetch.*;
  19
  20 public class BuildCode {
  21     State state;
  22     Hashtable temptovar;
  23     Hashtable paramstable;
  24     Hashtable tempstable;
  25     Hashtable fieldorder;
  26     Hashtable flagorder;
  27     int tag=0;
  28     String localsprefix="___locals___";
  29     String paramsprefix="___params___";
  30     String oidstr="___nextobject___";
  31     String nextobjstr="___nextobject___";
  32     String localcopystr="___localcopy___";
  33     public static boolean GENERATEPRECISEGC=false;
  34     public static String PREFIX="";
  35     public static String arraytype="ArrayObject";
  36     public static int count = 0;
  37     public static int flagcount = 0;
  38     Virtual virtualcalls;
  39     TypeUtil typeutil;
  40     private int maxtaskparams=0;
  41     private int maxcount=0;
  42     ClassDescriptor[] cdarray;
  43     TypeDescriptor[] arraytable;
  44     LocalityAnalysis locality;
  45     Hashtable<TempDescriptor, TempDescriptor> backuptable;
  46     Hashtable<LocalityBinding, TempDescriptor> reverttable;
  47     SafetyAnalysis sa;
  48
  49     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, SafetyAnalysis sa) {
  50         this(st, temptovar, typeutil, null, sa);
  51     }
  52
  53     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, LocalityAnalysis locality) {
  54         this(st, temptovar, typeutil, locality, null);
  55     }
  56
  57     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, LocalityAnalysis locality, SafetyAnalysis sa) {
  58         this.sa=sa;
  59         state=st;
  60         this.temptovar=temptovar;
  61         paramstable=new Hashtable();
  62         tempstable=new Hashtable();
  63         fieldorder=new Hashtable();
  64         flagorder=new Hashtable();
  65         this.typeutil=typeutil;
  66         virtualcalls=new Virtual(state,locality);
  67         if (locality!=null) {
  68             this.locality=locality;
  69             this.backuptable=new Hashtable<TempDescriptor, TempDescriptor>();
  70             this.reverttable=new Hashtable<LocalityBinding, TempDescriptor>();
  71         }
  72     }
  73
  74     /** The buildCode method outputs C code for all the methods.  The Flat
  75      * versions of the methods must already be generated and stored in
  76      * the State object. */
  77
  78     public void buildCode() {
  79         /* Create output streams to write to */
  80         PrintWriter outclassdefs=null;
  81         PrintWriter outstructs=null;
  82         PrintWriter outrepairstructs=null;
  83         PrintWriter outmethodheader=null;
  84         PrintWriter outmethod=null;
  85         PrintWriter outvirtual=null;
  86         PrintWriter outtask=null;
  87         PrintWriter outtaskdefs=null;
  88         PrintWriter outoptionalarrays=null;
  89         PrintWriter optionalheaders=null;
  90
  91         try {
  92             outstructs=new PrintWriter(new FileOutputStream(PREFIX+"structdefs.h"), true);
  93             outmethodheader=new PrintWriter(new FileOutputStream(PREFIX+"methodheaders.h"), true);
  94             outclassdefs=new PrintWriter(new FileOutputStream(PREFIX+"classdefs.h"), true);
  95             outmethod=new PrintWriter(new FileOutputStream(PREFIX+"methods.c"), true);
  96             outvirtual=new PrintWriter(new FileOutputStream(PREFIX+"virtualtable.h"), true);
  97             if (state.TASK) {
  98                 outtask=new PrintWriter(new FileOutputStream(PREFIX+"task.h"), true);
  99                 outtaskdefs=new PrintWriter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
 100                 if (state.OPTIONAL){
 101                     outoptionalarrays=new PrintWriter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
 102                     optionalheaders=new PrintWriter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
 103                 }
 104             }
 105             if (state.structfile!=null) {
 106                 outrepairstructs=new PrintWriter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
 107             }
 108         } catch (Exception e) {
 109             e.printStackTrace();
 110             System.exit(-1);
 111         }
 112
 113         /* Build the virtual dispatch tables */
 114         buildVirtualTables(outvirtual);
 115
 116         /* Output includes */
 117         outmethodheader.println("#ifndef METHODHEADERS_H");
 118         outmethodheader.println("#define METHODHEADERS_H");
 119         outmethodheader.println("#include \"structdefs.h\"");
 120         if (state.DSM)
 121             outmethodheader.println("#include \"dstm.h\"");
 122
 123         /* Output Structures */
 124         outputStructs(outstructs);
 125
 126         // Output the C class declarations
 127         // These could mutually reference each other
 128         outputClassDeclarations(outclassdefs);
 129
 130         // Output function prototypes and structures for parameters
 131         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 132         while(it.hasNext()) {
 133             ClassDescriptor cn=(ClassDescriptor)it.next();
 134             generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
 135         }
 136         outclassdefs.close();
 137
 138         if (state.TASK) {
 139             /* Map flags to integers */
 140             /* The runtime keeps track of flags using these integers */
 141             it=state.getClassSymbolTable().getDescriptorsIterator();
 142             while(it.hasNext()) {
 143                 ClassDescriptor cn=(ClassDescriptor)it.next();
 144                 mapFlags(cn);
 145             }
 146             /* Generate Tasks */
 147             generateTaskStructs(outstructs, outmethodheader);
 148
 149             /* Outputs generic task structures if this is a task
 150                program */
 151             outputTaskTypes(outtask);
 152         }
 153
 154         /* Build the actual methods */
 155         outputMethods(outmethod);
 156
 157         if (state.TASK) {
 158             /* Output code for tasks */
 159             outputTaskCode(outtaskdefs, outmethod);
 160             outtaskdefs.close();
 161             /* Record maximum number of task parameters */
 162             outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
 163         } else if (state.main!=null) {
 164             /* Generate main method */
 165             outputMainMethod(outmethod);
 166         }
 167
 168         /* Generate information for task with optional parameters */
 169         if (state.TASK&&state.OPTIONAL){
 170             generateOptionalArrays(outoptionalarrays, optionalheaders, state.getAnalysisResult(), state.getOptionalTaskDescriptors());
 171             outoptionalarrays.close();
 172         }
 173
 174         /* Output structure definitions for repair tool */
 175         if (state.structfile!=null) {
 176             buildRepairStructs(outrepairstructs);
 177             outrepairstructs.close();
 178         }
 179
 180         /* Close files */
 181         outmethodheader.println("#endif");
 182         outmethodheader.close();
 183         outmethod.close();
 184         outstructs.println("#endif");
 185         outstructs.close();
 186     }
 187
 188     /* This code just generates the main C method for java programs.
 189      * The main C method packs up the arguments into a string array
 190      * and passes it to the java main method. */
 191
 192     private void outputMainMethod(PrintWriter outmethod) {
 193         outmethod.println("int main(int argc, const char *argv[]) {");
 194         outmethod.println("  int i;");
 195         if (state.THREAD||state.DSM) {
 196             outmethod.println("initializethreads();");
 197         }
 198         if (state.DSM) {
 199             outmethod.println("if (dstmStartup(argv[1])) {");
 200             if (GENERATEPRECISEGC) {
 201                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-2);");
 202             } else {
 203                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-2);");
 204             }
 205         } else {
 206             if (GENERATEPRECISEGC) {
 207                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
 208             } else {
 209                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
 210             }
 211         }
 212         if (state.DSM) {
 213             outmethod.println("  for(i=2;i<argc;i++) {");
 214         } else
 215             outmethod.println("  for(i=1;i<argc;i++) {");
 216         outmethod.println("    int length=strlen(argv[i]);");
 217         if (GENERATEPRECISEGC) {
 218             outmethod.println("    struct ___String___ *newstring=NewString(NULL, argv[i], length);");
 219         } else {
 220             outmethod.println("    struct ___String___ *newstring=NewString(argv[i], length);");
 221         }
 222         if (state.DSM)
 223             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-2]=newstring;");
 224         else
 225             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-1]=newstring;");
 226         outmethod.println("  }");
 227
 228
 229         MethodDescriptor md=typeutil.getMain();
 230         ClassDescriptor cd=typeutil.getMainClass();
 231
 232         outmethod.println("   {");
 233         if (GENERATEPRECISEGC) {
 234             if (state.DSM) {
 235                 outmethod.print("       struct "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 236             } else
 237                 outmethod.print("       struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 238             outmethod.println("1, NULL,"+"stringarray};");
 239             if (state.DSM)
 240                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 241             else
 242                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 243         } else {
 244             if (state.DSM)
 245                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 246             else
 247                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 248         }
 249         outmethod.println("   }");
 250
 251         if (state.DSM) {
 252             outmethod.println("}");
 253         }
 254
 255         if (state.THREAD||state.DSM) {
 256             outmethod.println("pthread_mutex_lock(&gclistlock);");
 257             outmethod.println("threadcount--;");
 258             outmethod.println("pthread_cond_signal(&gccond);");
 259             outmethod.println("pthread_mutex_unlock(&gclistlock);");
 260             if (state.THREAD)
 261                 outmethod.println("pthread_exit(NULL);");
 262         }
 263
 264
 265         outmethod.println("}");
 266     }
 267
 268     /* This method outputs code for each task. */
 269
 270     private void outputTaskCode(PrintWriter outtaskdefs, PrintWriter outmethod) {
 271         /* Compile task based program */
 272         outtaskdefs.println("#include \"task.h\"");
 273         outtaskdefs.println("#include \"methodheaders.h\"");
 274         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 275         while(taskit.hasNext()) {
 276             TaskDescriptor td=(TaskDescriptor)taskit.next();
 277             FlatMethod fm=state.getMethodFlat(td);
 278             generateFlatMethod(fm, null, outmethod);
 279             generateTaskDescriptor(outtaskdefs, fm, td);
 280         }
 281
 282         //Output task descriptors
 283         taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 284         outtaskdefs.println("struct taskdescriptor * taskarray[]= {");
 285         boolean first=true;
 286         while(taskit.hasNext()) {
 287             TaskDescriptor td=(TaskDescriptor)taskit.next();
 288             if (first)
 289                 first=false;
 290             else
 291                 outtaskdefs.println(",");
 292             outtaskdefs.print("&task_"+td.getSafeSymbol());
 293         }
 294         outtaskdefs.println("};");
 295
 296         outtaskdefs.println("int numtasks="+state.getTaskSymbolTable().getValueSet().size()+";");
 297     }
 298
 299     /* This method outputs most of the methods.c file.  This includes
 300      * some standard includes and then an array with the sizes of
 301      * objets and array that stores supertype and then the code for
 302      * the Java methods.. */
 303
 304     private void outputMethods(PrintWriter outmethod) {
 305         outmethod.println("#include \"methodheaders.h\"");
 306         outmethod.println("#include \"virtualtable.h\"");
 307         outmethod.println("#include <runtime.h>");
 308         if (state.DSM) {
 309             outmethod.println("#include \"localobjects.h\"");
 310         }
 311         if (state.THREAD||state.DSM)
 312             outmethod.println("#include <thread.h>");
 313         if (state.main!=null) {
 314             outmethod.println("#include <string.h>");
 315         }
 316         if (state.CONSCHECK) {
 317             outmethod.println("#include \"checkers.h\"");
 318         }
 319         //Store the sizes of classes & array elements
 320         generateSizeArray(outmethod);
 321
 322         //Store table of supertypes
 323         generateSuperTypeTable(outmethod);
 324
 325         //Store the layout of classes
 326         generateLayoutStructs(outmethod);
 327
 328         /* Generate code for methods */
 329         if (state.DSM) {
 330             for(Iterator<LocalityBinding> lbit=locality.getLocalityBindings().iterator();lbit.hasNext();) {
 331                 LocalityBinding lb=lbit.next();
 332                 MethodDescriptor md=lb.getMethod();
 333                 FlatMethod fm=state.getMethodFlat(md);
 334                 if (!md.getModifiers().isNative()) {
 335                         generateFlatMethod(fm, lb, outmethod);
 336                 }
 337             }
 338         } else {
 339             Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 340             while(classit.hasNext()) {
 341                 ClassDescriptor cn=(ClassDescriptor)classit.next();
 342                 Iterator methodit=cn.getMethods();
 343                 while(methodit.hasNext()) {
 344                     /* Classify parameters */
 345                     MethodDescriptor md=(MethodDescriptor)methodit.next();
 346                     FlatMethod fm=state.getMethodFlat(md);
 347                     if (!md.getModifiers().isNative()) {
 348                         generateFlatMethod(fm, null, outmethod);
 349                     }
 350                 }
 351             }
 352         }
 353     }
 354
 355     private void outputStructs(PrintWriter outstructs) {
 356         outstructs.println("#ifndef STRUCTDEFS_H");
 357         outstructs.println("#define STRUCTDEFS_H");
 358         outstructs.println("#include \"classdefs.h\"");
 359
 360         /* Output #defines that the runtime uses to determine type
 361          * numbers for various objects it needs */
 362         outstructs.println("#define MAXCOUNT "+maxcount);
 363         if (state.DSM) {
 364             LocalityBinding lb=new LocalityBinding(typeutil.getRun(), false);
 365             lb.setGlobalThis(LocalityAnalysis.GLOBAL);
 366             outstructs.println("#define RUNMETHOD "+virtualcalls.getLocalityNumber(lb));
 367         }
 368
 369         outstructs.println("#define STRINGARRAYTYPE "+
 370                            (state.getArrayNumber(
 371                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass))).makeArray(state))+state.numClasses()));
 372
 373         outstructs.println("#define OBJECTARRAYTYPE "+
 374                            (state.getArrayNumber(
 375                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.ObjectClass))).makeArray(state))+state.numClasses()));
 376
 377
 378         outstructs.println("#define STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
 379         outstructs.println("#define CHARARRAYTYPE "+
 380                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
 381
 382         outstructs.println("#define BYTEARRAYTYPE "+
 383                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
 384
 385         outstructs.println("#define BYTEARRAYARRAYTYPE "+
 386                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
 387
 388         outstructs.println("#define NUMCLASSES "+state.numClasses());
 389         if (state.TASK) {
 390             outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
 391             outstructs.println("#define TAGTYPE "+typeutil.getClass(TypeUtil.TagClass).getId());
 392             outstructs.println("#define TAGARRAYTYPE "+
 393                                (state.getArrayNumber(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass)).makeArray(state))+state.numClasses()));
 394         }
 395     }
 396
 397     private void outputClassDeclarations(PrintWriter outclassdefs) {
 398         if (state.THREAD||state.DSM)
 399             outclassdefs.println("#include <pthread.h>");
 400         if(state.OPTIONAL)
 401             outclassdefs.println("#include \"optionalstruct.h\"");
 402         outclassdefs.println("struct "+arraytype+";");
 403         /* Start by declaring all structs */
 404         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 405         while(it.hasNext()) {
 406             ClassDescriptor cn=(ClassDescriptor)it.next();
 407             outclassdefs.println("struct "+cn.getSafeSymbol()+";");
 408         }
 409         outclassdefs.println("");
 410         //Print out definition for array type
 411         outclassdefs.println("struct "+arraytype+" {");
 412         outclassdefs.println("  int type;");
 413         if (state.THREAD) {
 414             outclassdefs.println("  pthread_t tid;");
 415             outclassdefs.println("  void * lockentry;");
 416             outclassdefs.println("  int lockcount;");
 417         }
 418         if (state.TASK) {
 419             outclassdefs.println("  int flag;");
 420             outclassdefs.println("  void * flagptr;");
 421             if(state.OPTIONAL){
 422                 outclassdefs.println("  int numfses;");
 423                 outclassdefs.println("  int * fses;");
 424             }
 425         }
 426         printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
 427
 428         outclassdefs.println("  int ___length___;");
 429         outclassdefs.println("};\n");
 430         outclassdefs.println("extern int classsize[];");
 431         outclassdefs.println("extern int hasflags[];");
 432         outclassdefs.println("extern unsigned int * pointerarray[];");
 433         outclassdefs.println("extern int supertypes[];");
 434     }
 435
 436     /** Prints out definitions for generic task structures */
 437
 438     private void outputTaskTypes(PrintWriter outtask) {
 439         outtask.println("#ifndef _TASK_H");
 440         outtask.println("#define _TASK_H");
 441         outtask.println("struct parameterdescriptor {");
 442         outtask.println("int type;");
 443         outtask.println("int numberterms;");
 444         outtask.println("int *intarray;");
 445         outtask.println("void * queue;");
 446         outtask.println("int numbertags;");
 447         outtask.println("int *tagarray;");
 448         outtask.println("};");
 449
 450         outtask.println("struct taskdescriptor {");
 451         outtask.println("void * taskptr;");
 452         outtask.println("int numParameters;");
 453         outtask.println("int numTotal;");
 454         outtask.println("struct parameterdescriptor **descriptorarray;");
 455         outtask.println("char * name;");
 456         outtask.println("};");
 457         outtask.println("extern struct taskdescriptor * taskarray[];");
 458         outtask.println("extern numtasks;");
 459         outtask.println("#endif");
 460     }
 461
 462
 463     private void buildRepairStructs(PrintWriter outrepairstructs) {
 464         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 465         while(classit.hasNext()) {
 466             ClassDescriptor cn=(ClassDescriptor)classit.next();
 467             outrepairstructs.println("structure "+cn.getSymbol()+" {");
 468             outrepairstructs.println("  int __type__;");
 469             if (state.TASK) {
 470                 outrepairstructs.println("  int __flag__;");
 471                 outrepairstructs.println("  int __flagptr__;");
 472             }
 473             printRepairStruct(cn, outrepairstructs);
 474             outrepairstructs.println("}\n");
 475         }
 476
 477         for(int i=0;i<state.numArrays();i++) {
 478             TypeDescriptor tdarray=arraytable[i];
 479             TypeDescriptor tdelement=tdarray.dereference();
 480             outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
 481             outrepairstructs.println("  int __type__;");
 482             printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
 483             outrepairstructs.println("  int length;");
 484             /*
 485               // Need to add support to repair tool for this
 486               if (tdelement.isClass()||tdelement.isArray())
 487                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" * elem[this.length];");
 488             else
 489                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" elem[this.length];");
 490             */
 491             outrepairstructs.println("}\n");
 492         }
 493     }
 494
 495     private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
 496         ClassDescriptor sp=cn.getSuperDesc();
 497         if (sp!=null)
 498             printRepairStruct(sp, output);
 499
 500         Vector fields=(Vector)fieldorder.get(cn);
 501
 502         for(int i=0;i<fields.size();i++) {
 503             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 504             if (fd.getType().isArray()) {
 505                 output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
 506             } else if (fd.getType().isClass())
 507                 output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
 508             else if (fd.getType().isFloat())
 509                 output.println("  int "+fd.getSymbol()+"; /* really float */");
 510             else
 511                 output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
 512         }
 513     }
 514
 515     /** This method outputs TaskDescriptor information */
 516     void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
 517         for (int i=0;i<task.numParameters();i++) {
 518             VarDescriptor param_var=task.getParameter(i);
 519             TypeDescriptor param_type=task.getParamType(i);
 520             FlagExpressionNode param_flag=task.getFlag(param_var);
 521             TagExpressionList param_tag=task.getTag(param_var);
 522
 523             int dnfterms;
 524             if (param_flag==null) {
 525                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 526                 output.println("0x0, 0x0 };");
 527                 dnfterms=1;
 528             } else {
 529                 DNFFlag dflag=param_flag.getDNF();
 530                 dnfterms=dflag.size();
 531
 532                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 533                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 534                 for(int j=0;j<dflag.size();j++) {
 535                     if (j!=0)
 536                         output.println(",");
 537                     Vector term=dflag.get(j);
 538                     int andmask=0;
 539                     int checkmask=0;
 540                     for(int k=0;k<term.size();k++) {
 541                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 542                         FlagDescriptor fd=dfa.getFlag();
 543                         boolean negated=dfa.getNegated();
 544                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 545                         andmask|=flagid;
 546                         if (!negated)
 547                             checkmask|=flagid;
 548                     }
 549                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 550                 }
 551                 output.println("};");
 552             }
 553
 554             output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
 555             //BUG...added next line to fix, test with any task program
 556             if (param_tag!=null)
 557                 for(int j=0;j<param_tag.numTags();j++) {
 558                     if (j!=0)
 559                         output.println(",");
 560                     /* for each tag we need */
 561                     /* which slot it is */
 562                     /* what type it is */
 563                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 564                     TempDescriptor tmp=param_tag.getTemp(j);
 565                     int slot=fm.getTagInt(tmp);
 566                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 567                 }
 568             output.println("};");
 569
 570             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
 571             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 572             output.println("/* number of DNF terms */"+dnfterms+",");
 573             output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
 574             output.println("0,");
 575             //BUG, added next line to fix and else statement...test
 576             //with any task program
 577             if (param_tag!=null)
 578                 output.println("/* number of tags */"+param_tag.numTags()+",");
 579             else
 580                 output.println("/* number of tags */ 0,");
 581             output.println("parametertag_"+i+"_"+task.getSafeSymbol());
 582             output.println("};");
 583         }
 584
 585
 586         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
 587         for (int i=0;i<task.numParameters();i++) {
 588             if (i!=0)
 589                 output.println(",");
 590             output.print("&parameter_"+i+"_"+task.getSafeSymbol());
 591         }
 592         output.println("};");
 593
 594         output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
 595         output.println("&"+task.getSafeSymbol()+",");
 596         output.println("/* number of parameters */" +task.numParameters() + ",");
 597         int numtotal=task.numParameters()+fm.numTags();
 598         output.println("/* number total parameters */" +numtotal + ",");
 599         output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
 600         output.println("\""+task.getSymbol()+"\"");
 601         output.println("};");
 602     }
 603
 604
 605     /** The buildVirtualTables method outputs the virtual dispatch
 606      * tables for methods. */
 607
 608     private void buildVirtualTables(PrintWriter outvirtual) {
 609         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 610         while(classit.hasNext()) {
 611             ClassDescriptor cd=(ClassDescriptor)classit.next();
 612             if (virtualcalls.getMethodCount(cd)>maxcount)
 613                 maxcount=virtualcalls.getMethodCount(cd);
 614         }
 615         MethodDescriptor[][] virtualtable=null;
 616         LocalityBinding[][] lbvirtualtable=null;
 617         if (state.DSM)
 618             lbvirtualtable=new LocalityBinding[state.numClasses()+state.numArrays()][maxcount];
 619         else
 620             virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
 621
 622         /* Fill in virtual table */
 623         classit=state.getClassSymbolTable().getDescriptorsIterator();
 624         while(classit.hasNext()) {
 625             ClassDescriptor cd=(ClassDescriptor)classit.next();
 626             if (state.DSM)
 627                 fillinRow(cd, lbvirtualtable, cd.getId());
 628             else
 629                 fillinRow(cd, virtualtable, cd.getId());
 630         }
 631
 632         ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
 633         Iterator arrayit=state.getArrayIterator();
 634         while(arrayit.hasNext()) {
 635             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 636             int id=state.getArrayNumber(td);
 637             if (state.DSM)
 638                 fillinRow(objectcd, lbvirtualtable, id+state.numClasses());
 639             else
 640                 fillinRow(objectcd, virtualtable, id+state.numClasses());
 641         }
 642
 643         outvirtual.print("void * virtualtable[]={");
 644         boolean needcomma=false;
 645         for(int i=0;i<state.numClasses()+state.numArrays();i++) {
 646             for(int j=0;j<maxcount;j++) {
 647                 if (needcomma)
 648                     outvirtual.print(", ");
 649                 if (state.DSM&&lbvirtualtable[i][j]!=null) {
 650                     LocalityBinding lb=lbvirtualtable[i][j];
 651                     MethodDescriptor md=lb.getMethod();
 652                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 653                 } else if (!state.DSM&&virtualtable[i][j]!=null) {
 654                     MethodDescriptor md=virtualtable[i][j];
 655                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 656                 } else {
 657                     outvirtual.print("0");
 658                 }
 659                 needcomma=true;
 660             }
 661             outvirtual.println("");
 662         }
 663         outvirtual.println("};");
 664         outvirtual.close();
 665     }
 666
 667     private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
 668         /* Get inherited methods */
 669         if (cd.getSuperDesc()!=null)
 670             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 671         /* Override them with our methods */
 672         for(Iterator it=cd.getMethods();it.hasNext();) {
 673             MethodDescriptor md=(MethodDescriptor)it.next();
 674             if (md.isStatic()||md.getReturnType()==null)
 675                 continue;
 676             int methodnum=virtualcalls.getMethodNumber(md);
 677             virtualtable[rownum][methodnum]=md;
 678         }
 679     }
 680
 681     private void fillinRow(ClassDescriptor cd, LocalityBinding[][] virtualtable, int rownum) {
 682         /* Get inherited methods */
 683         if (cd.getSuperDesc()!=null)
 684             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 685         /* Override them with our methods */
 686         if (locality.getClassBindings(cd)!=null)
 687             for(Iterator<LocalityBinding> lbit=locality.getClassBindings(cd).iterator();lbit.hasNext();) {
 688                 LocalityBinding lb=lbit.next();
 689                 MethodDescriptor md=lb.getMethod();
 690                 //Is the method static or a constructor
 691                 if (md.isStatic()||md.getReturnType()==null)
 692                     continue;
 693                 int methodnum=virtualcalls.getLocalityNumber(lb);
 694                 virtualtable[rownum][methodnum]=lb;
 695             }
 696     }
 697
 698
 699     /** Generate array that contains the sizes of class objects.  The
 700      * object allocation functions in the runtime use this
 701      * information. */
 702
 703     private void generateSizeArray(PrintWriter outclassdefs) {
 704         outclassdefs.print("int classsize[]={");
 705         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 706         cdarray=new ClassDescriptor[state.numClasses()];
 707         while(it.hasNext()) {
 708             ClassDescriptor cd=(ClassDescriptor)it.next();
 709             cdarray[cd.getId()]=cd;
 710         }
 711         boolean needcomma=false;
 712         for(int i=0;i<state.numClasses();i++) {
 713             if (needcomma)
 714                 outclassdefs.print(", ");
 715             outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
 716             needcomma=true;
 717         }
 718
 719         arraytable=new TypeDescriptor[state.numArrays()];
 720
 721         Iterator arrayit=state.getArrayIterator();
 722         while(arrayit.hasNext()) {
 723             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 724             int id=state.getArrayNumber(td);
 725             arraytable[id]=td;
 726         }
 727
 728         for(int i=0;i<state.numArrays();i++) {
 729             if (needcomma)
 730                 outclassdefs.print(", ");
 731             TypeDescriptor tdelement=arraytable[i].dereference();
 732             if (tdelement.isArray()||tdelement.isClass())
 733                 outclassdefs.print("sizeof(void *)");
 734             else
 735                 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
 736             needcomma=true;
 737         }
 738
 739         outclassdefs.println("};");
 740     }
 741
 742     /** Constructs params and temp objects for each method or task.
 743      * These objects tell the compiler which temps need to be
 744      * allocated.  */
 745
 746     private void generateTempStructs(FlatMethod fm, LocalityBinding lb) {
 747         MethodDescriptor md=fm.getMethod();
 748         TaskDescriptor task=fm.getTask();
 749         Set<TempDescriptor> saveset=lb!=null?locality.getTempSet(lb):null;
 750         ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
 751
 752         if (lb!=null)
 753             paramstable.put(lb, objectparams);
 754         else if (md!=null)
 755             paramstable.put(md, objectparams);
 756         else
 757             paramstable.put(task, objectparams);
 758
 759         for(int i=0;i<fm.numParameters();i++) {
 760             TempDescriptor temp=fm.getParameter(i);
 761             TypeDescriptor type=temp.getType();
 762             if (type.isPtr()&&GENERATEPRECISEGC)
 763                 objectparams.addPtr(temp);
 764             else
 765                 objectparams.addPrim(temp);
 766             if(lb!=null&&saveset.contains(temp)) {
 767                 backuptable.put(temp, temp.createNew());
 768             }
 769         }
 770
 771         for(int i=0;i<fm.numTags();i++) {
 772             TempDescriptor temp=fm.getTag(i);
 773             if (GENERATEPRECISEGC)
 774                 objectparams.addPtr(temp);
 775             else
 776                 objectparams.addPrim(temp);
 777         }
 778
 779         TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
 780         if (lb!=null)
 781             tempstable.put(lb, objecttemps);
 782         else if (md!=null)
 783             tempstable.put(md, objecttemps);
 784         else
 785             tempstable.put(task, objecttemps);
 786
 787         for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
 788             FlatNode fn=(FlatNode)nodeit.next();
 789             TempDescriptor[] writes=fn.writesTemps();
 790             for(int i=0;i<writes.length;i++) {
 791                 TempDescriptor temp=writes[i];
 792                 TypeDescriptor type=temp.getType();
 793                 if (type.isPtr()&&GENERATEPRECISEGC)
 794                     objecttemps.addPtr(temp);
 795                 else
 796                     objecttemps.addPrim(temp);
 797                 if(lb!=null&&saveset.contains(temp)&&
 798                    !backuptable.containsKey(temp))
 799                     backuptable.put(temp, temp.createNew());
 800             }
 801         }
 802
 803         /* Create backup temps */
 804         if (lb!=null) {
 805             for(Iterator<TempDescriptor> tmpit=backuptable.values().iterator();tmpit.hasNext();) {
 806                 TempDescriptor tmp=tmpit.next();
 807                 TypeDescriptor type=tmp.getType();
 808                 if (type.isPtr()&&GENERATEPRECISEGC)
 809                     objecttemps.addPtr(tmp);
 810                 else
 811                     objecttemps.addPrim(tmp);
 812             }
 813             /* Create temp to hold revert table */
 814             if (lb.getHasAtomic()||lb.isAtomic()) {
 815                 TempDescriptor reverttmp=new TempDescriptor("revertlist", typeutil.getClass(TypeUtil.ObjectClass));
 816                 if (GENERATEPRECISEGC)
 817                     objecttemps.addPtr(reverttmp);
 818                 else
 819                     objecttemps.addPrim(reverttmp);
 820                 reverttable.put(lb, reverttmp);
 821             }
 822         }
 823     }
 824
 825     /** This method outputs the following information about classes
 826      * and arrays:
 827      * (1) For classes, what are the locations of pointers.
 828      * (2) For arrays, does the array contain pointers or primitives.
 829      * (3) For classes, does the class contain flags.
 830      */
 831
 832     private void generateLayoutStructs(PrintWriter output) {
 833         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 834         while(it.hasNext()) {
 835             ClassDescriptor cn=(ClassDescriptor)it.next();
 836             output.println("unsigned int "+cn.getSafeSymbol()+"_pointers[]={");
 837             Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
 838             int count=0;
 839             while(allit.hasNext()) {
 840                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 841                 TypeDescriptor type=fd.getType();
 842                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 843                     continue;
 844                 if (type.isPtr())
 845                     count++;
 846             }
 847             output.print(count);
 848             allit=cn.getFieldTable().getAllDescriptorsIterator();
 849             while(allit.hasNext()) {
 850                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 851                 TypeDescriptor type=fd.getType();
 852                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 853                     continue;
 854                 if (type.isPtr()) {
 855                     output.println(",");
 856                     output.print("((unsigned int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
 857                 }
 858             }
 859             output.println("};");
 860         }
 861         output.println("unsigned int * pointerarray[]={");
 862         boolean needcomma=false;
 863         for(int i=0;i<state.numClasses();i++) {
 864             ClassDescriptor cn=cdarray[i];
 865             if (needcomma)
 866                 output.println(",");
 867             needcomma=true;
 868             output.print(cn.getSafeSymbol()+"_pointers");
 869         }
 870
 871         for(int i=0;i<state.numArrays();i++) {
 872             if (needcomma)
 873                 output.println(", ");
 874             TypeDescriptor tdelement=arraytable[i].dereference();
 875             if (tdelement.isArray()||tdelement.isClass())
 876                 output.print("((unsigned int *)1)");
 877             else
 878                 output.print("0");
 879             needcomma=true;
 880         }
 881
 882         output.println("};");
 883         needcomma=false;
 884         output.println("int hasflags[]={");
 885         for(int i=0;i<state.numClasses();i++) {
 886             ClassDescriptor cn=cdarray[i];
 887             if (needcomma)
 888                 output.println(", ");
 889             needcomma=true;
 890             if (cn.hasFlags())
 891                 output.print("1");
 892             else
 893                 output.print("0");
 894         }
 895         output.println("};");
 896     }
 897
 898     /** Print out table to give us supertypes */
 899     private void generateSuperTypeTable(PrintWriter output) {
 900         output.println("int supertypes[]={");
 901         boolean needcomma=false;
 902         for(int i=0;i<state.numClasses();i++) {
 903             ClassDescriptor cn=cdarray[i];
 904             if (needcomma)
 905                 output.println(",");
 906             needcomma=true;
 907             if (cn.getSuperDesc()!=null) {
 908                 ClassDescriptor cdsuper=cn.getSuperDesc();
 909                 output.print(cdsuper.getId());
 910             } else
 911                 output.print("-1");
 912         }
 913         output.println("};");
 914     }
 915
 916     /** Force consistent field ordering between inherited classes. */
 917
 918     private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
 919
 920         ClassDescriptor sp=cn.getSuperDesc();
 921         if (sp!=null)
 922             printClassStruct(sp, classdefout);
 923
 924         if (!fieldorder.containsKey(cn)) {
 925             Vector fields=new Vector();
 926             fieldorder.put(cn,fields);
 927             if (sp==null) {
 928                 fields.add(cn.getFieldTable().get("cachedCode"));
 929             }
 930             Iterator fieldit=cn.getFields();
 931             while(fieldit.hasNext()) {
 932                 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
 933                 if ((sp==null||!sp.getFieldTable().contains(fd.getSymbol()))&&
 934                     (!fd.getSymbol().equals("cachedCode")))
 935                     fields.add(fd);
 936             }
 937         }
 938         Vector fields=(Vector)fieldorder.get(cn);
 939
 940         for(int i=0;i<fields.size();i++) {
 941             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 942             if (fd.getType().isClass()||fd.getType().isArray())
 943                 classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
 944             else
 945                 classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
 946         }
 947     }
 948
 949
 950     /* Map flags to integers consistently between inherited
 951      * classes. */
 952
 953     private void mapFlags(ClassDescriptor cn) {
 954         ClassDescriptor sp=cn.getSuperDesc();
 955         if (sp!=null)
 956             mapFlags(sp);
 957         int max=0;
 958         if (!flagorder.containsKey(cn)) {
 959             Hashtable flags=new Hashtable();
 960             flagorder.put(cn,flags);
 961             if (sp!=null) {
 962                 Hashtable superflags=(Hashtable)flagorder.get(sp);
 963                 Iterator superflagit=superflags.keySet().iterator();
 964                 while(superflagit.hasNext()) {
 965                     FlagDescriptor fd=(FlagDescriptor)superflagit.next();
 966                     Integer number=(Integer)superflags.get(fd);
 967                     flags.put(fd, number);
 968                     if ((number.intValue()+1)>max)
 969                         max=number.intValue()+1;
 970                 }
 971             }
 972
 973             Iterator flagit=cn.getFlags();
 974             while(flagit.hasNext()) {
 975                 FlagDescriptor fd=(FlagDescriptor)flagit.next();
 976                 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
 977                     flags.put(fd, new Integer(max++));
 978             }
 979         }
 980     }
 981
 982
 983     /** This function outputs (1) structures that parameters are
 984      * passed in (when PRECISE GC is enabled) and (2) function
 985      * prototypes for the methods */
 986
 987     private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
 988         /* Output class structure */
 989         classdefout.println("struct "+cn.getSafeSymbol()+" {");
 990         classdefout.println("  int type;");
 991         if (state.THREAD) {
 992             classdefout.println("  pthread_t tid;");
 993             classdefout.println("  void * lockentry;");
 994             classdefout.println("  int lockcount;");
 995         }
 996
 997         if (state.TASK) {
 998             classdefout.println("  int flag;");
 999             classdefout.println("  void * flagptr;");
1000             if (state.OPTIONAL){
1001                 classdefout.println("  int numfses;");
1002                 classdefout.println("  int * fses;");
1003             }
1004         }
1005         printClassStruct(cn, classdefout);
1006         classdefout.println("};\n");
1007
1008         if (state.DSM) {
1009             /* Cycle through LocalityBindings */
1010             HashSet<MethodDescriptor> nativemethods=new HashSet<MethodDescriptor>();
1011             Set<LocalityBinding> lbset=locality.getClassBindings(cn);
1012             if (lbset!=null) {
1013                 for(Iterator<LocalityBinding> lbit=lbset.iterator();lbit.hasNext();) {
1014                     LocalityBinding lb=lbit.next();
1015                     MethodDescriptor md=lb.getMethod();
1016                     if (md.getModifiers().isNative()) {
1017                         //make sure we only print a native method once
1018                         if (nativemethods.contains(md)) {
1019                             FlatMethod fm=state.getMethodFlat(md);
1020                             generateTempStructs(fm, lb);
1021                             continue;
1022                         } else
1023                             nativemethods.add(md);
1024                     }
1025                     generateMethod(cn, md, lb, headersout, output);
1026                 }
1027             }
1028             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1029                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1030                 if (md.getModifiers().isNative()&&!nativemethods.contains(md)) {
1031                     //Need to build param structure for library code
1032                     FlatMethod fm=state.getMethodFlat(md);
1033                     generateTempStructs(fm, null);
1034                     generateMethodParam(cn, md, null, output);
1035                 }
1036             }
1037
1038         } else
1039             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1040                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1041                 generateMethod(cn, md, null, headersout, output);
1042             }
1043     }
1044
1045     private void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter output) {
1046         /* Output parameter structure */
1047         if (GENERATEPRECISEGC) {
1048             ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1049             if (state.DSM&&lb!=null)
1050                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1051             else
1052                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1053             output.println("  int size;");
1054             output.println("  void * next;");
1055             for(int i=0;i<objectparams.numPointers();i++) {
1056                 TempDescriptor temp=objectparams.getPointer(i);
1057                 output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1058             }
1059             output.println("};\n");
1060         }
1061     }
1062
1063
1064     private void generateMethod(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter headersout, PrintWriter output) {
1065         FlatMethod fm=state.getMethodFlat(md);
1066         generateTempStructs(fm, lb);
1067
1068         ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1069         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md);
1070
1071         generateMethodParam(cn, md, lb, output);
1072
1073         /* Output temp structure */
1074         if (GENERATEPRECISEGC) {
1075             if (state.DSM)
1076                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1077             else
1078                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1079             output.println("  int size;");
1080             output.println("  void * next;");
1081             for(int i=0;i<objecttemps.numPointers();i++) {
1082                 TempDescriptor temp=objecttemps.getPointer(i);
1083                 if (temp.getType().isNull())
1084                     output.println("  void * "+temp.getSafeSymbol()+";");
1085                 else
1086                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1087             }
1088             output.println("};\n");
1089         }
1090
1091         /********* Output method declaration ***********/
1092
1093         /* First the return type */
1094         if (md.getReturnType()!=null) {
1095             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1096                 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1097             else
1098                 headersout.print(md.getReturnType().getSafeSymbol()+" ");
1099         } else
1100             //catch the constructor case
1101             headersout.print("void ");
1102
1103         /* Next the method name */
1104         if (state.DSM) {
1105             headersout.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1106         } else
1107             headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1108
1109         boolean printcomma=false;
1110         if (GENERATEPRECISEGC) {
1111             if (state.DSM) {
1112                 headersout.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1113             } else
1114                 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1115             printcomma=true;
1116         }
1117
1118         if (state.DSM&&lb.isAtomic()) {
1119             if (printcomma)
1120                 headersout.print(", ");
1121             headersout.print("transrecord_t * trans");
1122             printcomma=true;
1123         }
1124
1125         /*  Output parameter list*/
1126         for(int i=0;i<objectparams.numPrimitives();i++) {
1127             TempDescriptor temp=objectparams.getPrimitive(i);
1128             if (printcomma)
1129                 headersout.print(", ");
1130             printcomma=true;
1131             if (temp.getType().isClass()||temp.getType().isArray())
1132                 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1133             else
1134                 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1135         }
1136         headersout.println(");\n");
1137     }
1138
1139
1140     /** This function outputs (1) structures that parameters are
1141      * passed in (when PRECISE GC is enabled) and (2) function
1142      * prototypes for the tasks */
1143
1144     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
1145         /* Cycle through tasks */
1146         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
1147
1148         while(taskit.hasNext()) {
1149             /* Classify parameters */
1150             TaskDescriptor task=(TaskDescriptor)taskit.next();
1151             FlatMethod fm=state.getMethodFlat(task);
1152             generateTempStructs(fm, null);
1153
1154             ParamsObject objectparams=(ParamsObject) paramstable.get(task);
1155             TempObject objecttemps=(TempObject) tempstable.get(task);
1156
1157             /* Output parameter structure */
1158             if (GENERATEPRECISEGC) {
1159                 output.println("struct "+task.getSafeSymbol()+"_params {");
1160
1161                 output.println("  int size;");
1162                 output.println("  void * next;");
1163                 for(int i=0;i<objectparams.numPointers();i++) {
1164                     TempDescriptor temp=objectparams.getPointer(i);
1165                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1166                 }
1167
1168                 output.println("};\n");
1169                 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
1170                     maxtaskparams=objectparams.numPointers()+fm.numTags();
1171                 }
1172             }
1173
1174             /* Output temp structure */
1175             if (GENERATEPRECISEGC) {
1176                 output.println("struct "+task.getSafeSymbol()+"_locals {");
1177                 output.println("  int size;");
1178                 output.println("  void * next;");
1179                 for(int i=0;i<objecttemps.numPointers();i++) {
1180                     TempDescriptor temp=objecttemps.getPointer(i);
1181                     if (temp.getType().isNull())
1182                         output.println("  void * "+temp.getSafeSymbol()+";");
1183                     else if(temp.getType().isTag())
1184                         output.println("  struct "+
1185                                        (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1186                     else
1187                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1188                 }
1189                 output.println("};\n");
1190             }
1191
1192             /* Output task declaration */
1193             headersout.print("void " + task.getSafeSymbol()+"(");
1194
1195             boolean printcomma=false;
1196             if (GENERATEPRECISEGC) {
1197                 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1198             } else
1199                 headersout.print("void * parameterarray[]");
1200             headersout.println(");\n");
1201         }
1202     }
1203
1204     /***** Generate code for FlatMethod fm. *****/
1205
1206     private void generateFlatMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
1207         if (State.PRINTFLAT)
1208             System.out.println(fm.printMethod());
1209         MethodDescriptor md=fm.getMethod();
1210
1211         TaskDescriptor task=fm.getTask();
1212
1213         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1214
1215         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:md!=null?md:task);
1216         generateHeader(fm, lb, md!=null?md:task,output);
1217         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1218         if (state.DSM&&lb.getHasAtomic()) {
1219             output.println("transrecord_t * trans;");
1220         }
1221
1222         if (GENERATEPRECISEGC) {
1223             if (md!=null&&state.DSM)
1224                 output.print("   struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1225             else if (md!=null&&!state.DSM)
1226                 output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1227             else
1228                 output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
1229
1230             output.print(objecttemp.numPointers()+",");
1231             output.print(paramsprefix);
1232             for(int j=0;j<objecttemp.numPointers();j++)
1233                 output.print(", NULL");
1234             output.println("};");
1235         }
1236
1237         for(int i=0;i<objecttemp.numPrimitives();i++) {
1238             TempDescriptor td=objecttemp.getPrimitive(i);
1239             TypeDescriptor type=td.getType();
1240             if (type.isNull())
1241                 output.println("   void * "+td.getSafeSymbol()+";");
1242             else if (type.isClass()||type.isArray())
1243                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
1244             else
1245                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
1246         }
1247
1248         /* Assign labels to FlatNode's if necessary.*/
1249
1250         Hashtable<FlatNode, Integer> nodetolabel=assignLabels(fm);
1251
1252         /* Check to see if we need to do a GC if this is a
1253          * multi-threaded program...*/
1254
1255         if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1256             if (state.DSM&&lb.isAtomic())
1257                 output.println("checkcollect2(&"+localsprefix+",trans);");
1258             else
1259                 output.println("checkcollect(&"+localsprefix+");");
1260         }
1261
1262         /* Do the actual code generation */
1263         FlatNode current_node=null;
1264         HashSet tovisit=new HashSet();
1265         HashSet visited=new HashSet();
1266         tovisit.add(fm.getNext(0));
1267         while(current_node!=null||!tovisit.isEmpty()) {
1268             if (current_node==null) {
1269                 current_node=(FlatNode)tovisit.iterator().next();
1270                 tovisit.remove(current_node);
1271             }
1272             visited.add(current_node);
1273             if (nodetolabel.containsKey(current_node))
1274                 output.println("L"+nodetolabel.get(current_node)+":");
1275             if (state.INSTRUCTIONFAILURE) {
1276                 if (state.THREAD||state.DSM) {
1277                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1278                 }
1279                 else
1280                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1281             }
1282             if (current_node.numNext()==0) {
1283                 output.print("   ");
1284                 generateFlatNode(fm, lb, current_node, output);
1285                 if (current_node.kind()!=FKind.FlatReturnNode) {
1286                     output.println("   return;");
1287                 }
1288                 current_node=null;
1289             } else if(current_node.numNext()==1) {
1290                 output.print("   ");
1291                 generateFlatNode(fm, lb, current_node, output);
1292                 FlatNode nextnode=current_node.getNext(0);
1293                 if (visited.contains(nextnode)) {
1294                     output.println("goto L"+nodetolabel.get(nextnode)+";");
1295                     current_node=null;
1296                 } else
1297                     current_node=nextnode;
1298             } else if (current_node.numNext()==2) {
1299                 /* Branch */
1300                 output.print("   ");
1301                 generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1302                 if (!visited.contains(current_node.getNext(1)))
1303                     tovisit.add(current_node.getNext(1));
1304                 if (visited.contains(current_node.getNext(0))) {
1305                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1306                     current_node=null;
1307                 } else
1308                     current_node=current_node.getNext(0);
1309             } else throw new Error();
1310         }
1311         output.println("}\n\n");
1312     }
1313
1314     /** This method assigns labels to FlatNodes */
1315
1316     private Hashtable<FlatNode, Integer> assignLabels(FlatMethod fm) {
1317         HashSet tovisit=new HashSet();
1318         HashSet visited=new HashSet();
1319         int labelindex=0;
1320         Hashtable<FlatNode, Integer> nodetolabel=new Hashtable<FlatNode, Integer>();
1321         tovisit.add(fm.getNext(0));
1322
1323         /*Assign labels first.  A node needs a label if the previous
1324          * node has two exits or this node is a join point. */
1325
1326         while(!tovisit.isEmpty()) {
1327             FlatNode fn=(FlatNode)tovisit.iterator().next();
1328             tovisit.remove(fn);
1329             visited.add(fn);
1330             for(int i=0;i<fn.numNext();i++) {
1331                 FlatNode nn=fn.getNext(i);
1332                 if(i>0) {
1333                     //1) Edge >1 of node
1334                     nodetolabel.put(nn,new Integer(labelindex++));
1335                 }
1336                 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1337                     tovisit.add(nn);
1338                 } else {
1339                     //2) Join point
1340                     nodetolabel.put(nn,new Integer(labelindex++));
1341                 }
1342             }
1343         }
1344         return nodetolabel;
1345     }
1346
1347
1348     /** Generate text string that corresponds to the TempDescriptor td. */
1349     private String generateTemp(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1350         MethodDescriptor md=fm.getMethod();
1351         TaskDescriptor task=fm.getTask();
1352         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1353
1354         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1355             return td.getSafeSymbol();
1356         }
1357
1358         if (objecttemps.isLocalPtr(td)) {
1359             return localsprefix+"."+td.getSafeSymbol();
1360         }
1361
1362         if (objecttemps.isParamPtr(td)) {
1363             return paramsprefix+"->"+td.getSafeSymbol();
1364         }
1365         throw new Error();
1366     }
1367
1368     private void generateFlatNode(FlatMethod fm, LocalityBinding lb, FlatNode fn, PrintWriter output) {
1369         switch(fn.kind()) {
1370         case FKind.FlatAtomicEnterNode:
1371             generateFlatAtomicEnterNode(fm, lb, (FlatAtomicEnterNode) fn, output);
1372             return;
1373         case FKind.FlatAtomicExitNode:
1374             generateFlatAtomicExitNode(fm, lb, (FlatAtomicExitNode) fn, output);
1375             return;
1376         case FKind.FlatGlobalConvNode:
1377             generateFlatGlobalConvNode(fm, lb, (FlatGlobalConvNode) fn, output);
1378             return;
1379         case FKind.FlatTagDeclaration:
1380             generateFlatTagDeclaration(fm, lb, (FlatTagDeclaration) fn,output);
1381             return;
1382         case FKind.FlatCall:
1383             generateFlatCall(fm, lb, (FlatCall) fn,output);
1384             return;
1385         case FKind.FlatFieldNode:
1386             generateFlatFieldNode(fm, lb, (FlatFieldNode) fn,output);
1387             return;
1388         case FKind.FlatElementNode:
1389             generateFlatElementNode(fm, lb, (FlatElementNode) fn,output);
1390             return;
1391         case FKind.FlatSetElementNode:
1392             generateFlatSetElementNode(fm, lb, (FlatSetElementNode) fn,output);
1393             return;
1394         case FKind.FlatSetFieldNode:
1395             generateFlatSetFieldNode(fm, lb, (FlatSetFieldNode) fn,output);
1396             return;
1397         case FKind.FlatNew:
1398             generateFlatNew(fm, lb, (FlatNew) fn,output);
1399             return;
1400         case FKind.FlatOpNode:
1401             generateFlatOpNode(fm, lb, (FlatOpNode) fn,output);
1402             return;
1403         case FKind.FlatCastNode:
1404             generateFlatCastNode(fm, lb, (FlatCastNode) fn,output);
1405             return;
1406         case FKind.FlatLiteralNode:
1407             generateFlatLiteralNode(fm, lb, (FlatLiteralNode) fn,output);
1408             return;
1409         case FKind.FlatReturnNode:
1410             generateFlatReturnNode(fm, lb, (FlatReturnNode) fn,output);
1411             return;
1412         case FKind.FlatNop:
1413             output.println("/* nop */");
1414             return;
1415         case FKind.FlatBackEdge:
1416             if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1417                 if(state.DSM&&locality.getAtomic(lb).get(fn).intValue()>0) {
1418                     output.println("checkcollect2(&"+localsprefix+",trans);");
1419                 } else
1420                     output.println("checkcollect(&"+localsprefix+");");
1421             } else
1422                 output.println("/* nop */");
1423             return;
1424         case FKind.FlatCheckNode:
1425             generateFlatCheckNode(fm, lb, (FlatCheckNode) fn, output);
1426             return;
1427         case FKind.FlatFlagActionNode:
1428             generateFlatFlagActionNode(fm, lb, (FlatFlagActionNode) fn, output);
1429             return;
1430         case FKind.FlatPrefetchNode:
1431             if (!state.excprefetch.contains(fm.getMethod().getClassMethodName()))
1432                 generateFlatPrefetchNode(fm,lb, (FlatPrefetchNode) fn, output);
1433             return;
1434         }
1435         throw new Error();
1436     }
1437
1438     public void generateFlatPrefetchNode(FlatMethod fm, LocalityBinding lb, FlatPrefetchNode fpn, PrintWriter output) {
1439             short[] arrayfields = null;
1440             Vector fieldoffset = new Vector();
1441             Vector endoffset = new Vector();
1442             Vector oids = new Vector();
1443             short offsetcount = 0;
1444             int tuplecount = 0;  //Keeps track of number of prefetch tuples that need to be generated
1445             int i,j;
1446
1447             if (state.PREFETCH) {
1448                     output.println("/* prefetch */");
1449                     output.println("; /* empty statement to avoid compiler error */");
1450                     Iterator it = fpn.hspp.iterator();
1451                     String oidlist = new String();
1452                     while(it.hasNext()) {
1453                             PrefetchPair pp = (PrefetchPair) it.next();
1454                             Integer statusbase = locality.getNodePreTempInfo(lb,fpn).get(pp.base);
1455                             /* Find prefetches that can generate oid */
1456                             if(statusbase == LocalityAnalysis.GLOBAL) {
1457                                     if(locality.getAtomic(lb).get(fpn).intValue()>0) { /* Inside transaction */
1458                                             generateInsideTransCode(fm,lb,output, pp,oids,fieldoffset,endoffset,tuplecount);
1459                                     } else {/* Outside Transaction */
1460                                             generateOutsideTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1461                                     }
1462                                     tuplecount++;
1463                             } else if(statusbase == LocalityAnalysis.LOCAL) {
1464                                     generateLocalTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1465                             } else {
1466                                     continue;
1467                             }
1468                     }
1469
1470                     /*Create C code for numtuples */
1471                     output.println("   int numtuples_" + count + " = " + tuplecount + ";");
1472
1473                     /*Create C code for oid array */
1474                     output.print("   unsigned int oidarray_" + count + "[] = {");
1475                     boolean needcomma=false;
1476                     it = oids.iterator();
1477                     while(it.hasNext()) {
1478                             if (needcomma)
1479                                     output.print(", ");
1480                             output.print(it.next());
1481                             needcomma=true;
1482                     }
1483                     output.println("};");
1484
1485                     /*Create C code for endoffset values */
1486                     output.print("   unsigned short endoffsetarry_" + count +"[] = {");
1487                     needcomma=false;
1488                     it = endoffset.iterator();
1489                     while(it.hasNext()) {
1490                             if (needcomma)
1491                                     output.print(", ");
1492                             output.print(it.next());
1493                             needcomma=true;
1494                     }
1495                     output.println("};");
1496
1497                     /*Create C code for Field Offset Values */
1498                     output.print("   short fieldarry_" + count +"[] = {");
1499                     needcomma=false;
1500                     it = fieldoffset.iterator();
1501                     while(it.hasNext()) {
1502                             if (needcomma)
1503                                     output.print(", ");
1504                             output.print(it.next());
1505                             needcomma=true;
1506                     }
1507                     output.println("};");
1508                     /* make the prefetch call to Runtime */
1509                     if(tuplecount > 0) {
1510                             output.println("   prefetch((int) numtuples_"+count+ ", oidarray_"+count+ ", endoffsetarry_"+
1511                                             count+", fieldarry_"+count+");");
1512                     }
1513                     count++;
1514             }
1515
1516             /* Free heap memory */
1517             fieldoffset = null;
1518             endoffset = null;
1519             oids = null;
1520     }
1521
1522     public void generateInsideTransCode(FlatMethod fm, LocalityBinding lb,PrintWriter output,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount){
1523             int i,j;
1524             short offsetcount = 0;
1525             String test = new String();
1526
1527             Object newdesc = pp.desc.get(0);
1528             if(newdesc instanceof FieldDescriptor) {
1529                     FieldDescriptor fd = (FieldDescriptor)newdesc;
1530                     String oid = new String("(unsigned int) (" +
1531                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1532                                     generateTemp(fm, pp.base, lb) + "->" + ((FieldDescriptor)fd).getSafeSymbol() +
1533                                     " : NULL)");
1534                     oids.add(oid);
1535             } else {
1536                     IndexDescriptor id = (IndexDescriptor)newdesc;
1537                     String tstlbl = new String();
1538                     for(i=0; i<id.tddesc.size(); i++) {
1539                             tstlbl += generateTemp(fm, id.getTempDescAt(i), lb) + "+";
1540                     }
1541                     tstlbl += id.offset.toString();
1542
1543                     TypeDescriptor elementtype = pp.base.getType().dereference();
1544                     String type="";
1545                     if (elementtype.isArray()||elementtype.isClass())
1546                             type="void *";
1547                     else
1548                             type=elementtype.getSafeSymbol()+" ";
1549
1550                     String oid = new String("(unsigned int) (" + generateTemp(fm, pp.base, lb) + " != NULL ? " +
1551                                     "((" + tstlbl+"< 0 || "+tstlbl+" >= "+ generateTemp(fm, pp.base, lb) + "->___length___) ? 0 :"+
1552                                     "((" + type + "*)(((char *) &("+ generateTemp(fm, pp.base, lb)+ "->___length___))+sizeof(int)))["+tstlbl+"]) : 0)");
1553                     oids.add(oid);
1554             }
1555
1556             for(i = 1; i < pp.desc.size(); i++) {
1557                     TypeDescriptor newtd;
1558                     ClassDescriptor cd;
1559                     String newfieldoffset;
1560                     Object desc = pp.getDescAt(i);
1561                     offsetcount++;
1562                     if(desc instanceof FieldDescriptor) {
1563                             Object prevdesc = pp.getDescAt(i-1);
1564                             if(prevdesc instanceof IndexDescriptor){
1565                                     if((i-1) == 0) {
1566                                             newtd = pp.base.getType();
1567                                             cd = newtd.getClassDesc();
1568                                     } else {
1569                                             //FIXME currently handles one dimensional arrays
1570                                             newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1571                                             cd = newtd.getClassDesc();
1572                                     }
1573                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ cd.getSafeSymbol() +" *)0)->"+
1574                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1575                             } else {
1576                                     newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1577                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1578                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1579                             }
1580                             fieldoffset.add(newfieldoffset);
1581                     } else {
1582                             String tstlbl = new String();
1583                             for(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1584                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), lb) + "+";
1585                             }
1586                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1587                             newfieldoffset = new String(tstlbl);
1588                             fieldoffset.add(newfieldoffset);
1589                     }
1590             }
1591             if(tuplecount > 0) {
1592                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1593                     short endoffsetval = (short) tmp;
1594                     endoffset.add(endoffsetval);
1595             }else {
1596                     endoffset.add(offsetcount);
1597             }
1598             flagcount++;
1599     }
1600
1601     public void generateOutsideTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp, Vector oids, Vector fieldoffset, Vector endoffset, int tuplecount) {
1602             int i,j;
1603             short offsetcount = 0;
1604
1605             String oid = new String(" (unsigned int) (" + generateTemp(fm, pp.base, lb)+ ")");
1606             oids.add(oid);
1607             for(i = 0; i < pp.desc.size(); i++) {
1608                     TypeDescriptor newtd;
1609                     ClassDescriptor cd;
1610                     String newfieldoffset;
1611                     Object desc = pp.getDescAt(i);
1612                     offsetcount++;
1613                     if(desc instanceof FieldDescriptor) {
1614                             if(i == 0){
1615                                     newtd = pp.base.getType();
1616                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1617                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1618                             } else {
1619                                     Object prevdesc = pp.getDescAt(i-1);
1620                                     if(prevdesc instanceof IndexDescriptor){
1621                                             if((i-1) == 0) {
1622                                                     newtd = pp.base.getType();
1623                                                     cd = newtd.getClassDesc();
1624                                             } else {
1625                                                     //FIXME currently handles one dimensional arrays
1626                                                     newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1627                                                     cd = newtd.getClassDesc();
1628                                             }
1629                                             newfieldoffset = new String("(unsigned int)(&(((struct "+ cd.getSafeSymbol() +" *)0)->"+
1630                                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1631                                     } else {
1632                                             newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1633                                             newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1634                                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1635                                     }
1636                             }
1637                     } else {
1638                             String tstlbl = new String();
1639                             for(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1640                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), lb) + "+";
1641                             }
1642                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1643                             newfieldoffset = new String(tstlbl);
1644                     }
1645                     fieldoffset.add(newfieldoffset);
1646             }
1647             if(tuplecount > 0) {
1648                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1649                     short endoffsetval = (short) tmp;
1650                     endoffset.add(endoffsetval);
1651             }else {
1652                     endoffset.add(offsetcount);
1653             }
1654     }
1655
1656     public void generateLocalTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount) {
1657             int i, j, k;
1658             short offsetcount = 0;
1659
1660             Vector prefix = new Vector();
1661             prefix.add(generateTemp(fm,pp.base,lb));
1662             String tstlbl = new String("(" + prefix.get(0) + " != NULL ");
1663             for (i = 0; i < pp.desc.size(); i++) {
1664                     Object newdesc = pp.desc.get(i);
1665                     if(newdesc instanceof FieldDescriptor) {
1666                             FieldDescriptor fd = (FieldDescriptor) newdesc;
1667                             if(fd.isGlobal()){
1668                                     /* Field descriptor is global */
1669                                     String oid = new String(" (unsigned int) (");
1670                                     tstlbl += ") ? ";
1671                                     for(j = 0; j < prefix.size(); j++) {
1672                                             tstlbl += prefix.get(j) + "->";
1673                                     }
1674                                     tstlbl += fd.getSafeSymbol() + ": NULL";
1675                                     oid += tstlbl+ " )";
1676                                     oids.add(oid);
1677                                     for(j = i+1; j < pp.desc.size(); j++) {
1678                                             TypeDescriptor newtd;
1679                                             String newfieldoffset;
1680                                             Object desc = pp.getDescAt(j);
1681                                             offsetcount++;
1682                                             if(desc instanceof FieldDescriptor) {
1683                                                     Object prevdesc = pp.getDescAt(j-1);
1684                                                     if(prevdesc instanceof IndexDescriptor){
1685                                                             //FIXME currently handles one dimensional arrays
1686                                                             newtd = ((FieldDescriptor)pp.getDescAt(j-2)).getType();
1687                                                     } else {
1688                                                             newtd = ((FieldDescriptor) pp.getDescAt(j-1)).getType();
1689                                                     }
1690                                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1691                                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1692                                             } else {
1693                                                     String indexlbl = new String();
1694                                                     for(k = 0; k < ((IndexDescriptor)desc).tddesc.size(); k++) {
1695                                                             indexlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(k), lb) + "+";
1696                                                     }
1697                                                     indexlbl += ((IndexDescriptor)desc).offset.toString();
1698                                                     newfieldoffset = new String(indexlbl);
1699                                             }
1700                                             fieldoffset.add(newfieldoffset);
1701                                     }
1702                                     if(tuplecount > 0) {
1703                                             int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1704                                             short endoffsetval = (short) tmp;
1705                                             endoffset.add(endoffsetval);
1706                                     }else {
1707                                             endoffset.add(offsetcount);
1708                                     }
1709                                     tuplecount++;
1710                                     break; //break from outer for loop
1711                             } else {
1712                                     tstlbl += "&& ";
1713                                     for(j = 0; j < prefix.size(); j++) {
1714                                             tstlbl += prefix.get(j) + "->";
1715                                     }
1716                                     prefix.add(fd.getSafeSymbol());
1717                                     tstlbl += fd.getSafeSymbol() + " != NULL";
1718                             }
1719                     } else { /* if Index descriptor */
1720                             String indexstring = new String();
1721                             IndexDescriptor id = (IndexDescriptor) newdesc;
1722                             if(i == 0) {
1723                                     indexstring = generateTemp(fm, pp.base, lb);
1724                             } else {
1725                                     indexstring = ((FieldDescriptor)pp.getDescAt(i-1)).getSafeSymbol();
1726                             }
1727                             tstlbl += "&& ";
1728                             for(j = 0; j < prefix.size(); j++) {
1729                                     tstlbl += prefix.get(j) + "[";
1730                             }
1731                             indexstring += "[";
1732                             for(j = 0; j < id.tddesc.size(); j++) {
1733                                     tstlbl += generateTemp(fm, id.getTempDescAt(j), lb) + "+";
1734                                     indexstring += generateTemp(fm,id.getTempDescAt(j), lb) + "+";
1735                             }
1736                             tstlbl += id.offset.toString()+ "]";
1737                             indexstring += id.offset.toString()+ "]";
1738                             prefix. removeElementAt(prefix.size() -1);
1739                             prefix.add(indexstring);
1740                             tstlbl += " != NULL";
1741                     }
1742             }
1743     }
1744
1745     public void generateFlatGlobalConvNode(FlatMethod fm, LocalityBinding lb, FlatGlobalConvNode fgcn, PrintWriter output) {
1746             if (lb!=fgcn.getLocality())
1747                     return;
1748             /* Have to generate flat globalconv */
1749             if (fgcn.getMakePtr()) {
1750                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)transRead(trans, (unsigned int) "+generateTemp(fm, fgcn.getSrc(),lb)+");");
1751             } else {
1752                     /* Need to convert to OID */
1753                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)COMPOID("+generateTemp(fm, fgcn.getSrc(),lb)+");");
1754             }
1755     }
1756
1757     public void generateFlatAtomicEnterNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicEnterNode faen, PrintWriter output) {
1758             /* Check to see if we need to generate code for this atomic */
1759             if (locality.getAtomic(lb).get(faen.getPrev(0)).intValue()>0)
1760                     return;
1761             /* Backup the temps. */
1762             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1763                     TempDescriptor tmp=tmpit.next();
1764                     output.println(generateTemp(fm, backuptable.get(tmp),lb)+"="+generateTemp(fm,tmp,lb)+";");
1765             }
1766             output.println("goto transstart"+faen.getIdentifier()+";");
1767
1768             /******* Print code to retry aborted transaction *******/
1769             output.println("transretry"+faen.getIdentifier()+":");
1770
1771             /* Restore temps */
1772             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1773                     TempDescriptor tmp=tmpit.next();
1774                     output.println(generateTemp(fm, tmp,lb)+"="+generateTemp(fm,backuptable.get(tmp),lb)+";");
1775             }
1776
1777             /********* Need to revert local object store ********/
1778             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1779
1780         output.println("while ("+revertptr+") {");
1781         output.println("struct ___Object___ * tmpptr;");
1782         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1783         output.println("REVERT_OBJ("+revertptr+");");
1784         output.println(revertptr+"=tmpptr;");
1785         output.println("}");
1786
1787         /******* Tell the runtime to start the transaction *******/
1788
1789         output.println("transstart"+faen.getIdentifier()+":");
1790         output.println("trans=transStart();");
1791     }
1792
1793     public void generateFlatAtomicExitNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicExitNode faen, PrintWriter output) {
1794         /* Check to see if we need to generate code for this atomic */
1795         if (locality.getAtomic(lb).get(faen).intValue()>0)
1796             return;
1797         //store the revert list before we lose the transaction object
1798         String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1799         output.println(revertptr+"=trans->revertlist;");
1800         output.println("if (transCommit(trans)) {");
1801         /* Transaction aborts if it returns true */
1802         output.println("goto transretry"+faen.getAtomicEnter().getIdentifier()+";");
1803         output.println("} else {");
1804         /* Need to commit local object store */
1805         output.println("while ("+revertptr+") {");
1806         output.println("struct ___Object___ * tmpptr;");
1807         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1808         output.println("COMMIT_OBJ("+revertptr+");");
1809         output.println(revertptr+"=tmpptr;");
1810         output.println("}");
1811         output.println("}");
1812     }
1813
1814     private void generateFlatCheckNode(FlatMethod fm,  LocalityBinding lb, FlatCheckNode fcn, PrintWriter output) {
1815         if (state.CONSCHECK) {
1816             String specname=fcn.getSpec();
1817             String varname="repairstate___";
1818             output.println("{");
1819             output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1820
1821             TempDescriptor[] temps=fcn.getTemps();
1822             String[] vars=fcn.getVars();
1823             for(int i=0;i<temps.length;i++) {
1824                 output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i],lb)+";");
1825             }
1826
1827             output.println("if (doanalysis"+specname+"("+varname+")) {");
1828             output.println("free"+specname+"_state("+varname+");");
1829             output.println("} else {");
1830             output.println("/* Bad invariant */");
1831             output.println("free"+specname+"_state("+varname+");");
1832             output.println("abort_task();");
1833             output.println("}");
1834             output.println("}");
1835         }
1836     }
1837
1838     private void generateFlatCall(FlatMethod fm, LocalityBinding lb, FlatCall fc, PrintWriter output) {
1839         MethodDescriptor md=fc.getMethod();
1840         ParamsObject objectparams=(ParamsObject)paramstable.get(state.DSM?locality.getBinding(lb, fc):md);
1841         ClassDescriptor cn=md.getClassDesc();
1842         output.println("{");
1843         if (GENERATEPRECISEGC) {
1844             if (state.DSM) {
1845                 LocalityBinding fclb=locality.getBinding(lb, fc);
1846                 output.print("       struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1847             } else
1848                 output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1849
1850             output.print(objectparams.numPointers());
1851             output.print(", & "+localsprefix);
1852             if (fc.getThis()!=null) {
1853                 output.print(", ");
1854                 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis(),lb));
1855             }
1856             for(int i=0;i<fc.numArgs();i++) {
1857                 Descriptor var=md.getParameter(i);
1858                 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1859                 if (objectparams.isParamPtr(paramtemp)) {
1860                     TempDescriptor targ=fc.getArg(i);
1861                     output.print(", ");
1862                     TypeDescriptor td=md.getParamType(i);
1863                     if (td.isTag())
1864                         output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1865                     else
1866                         output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1867                 }
1868             }
1869             output.println("};");
1870         }
1871         output.print("       ");
1872
1873
1874         if (fc.getReturnTemp()!=null)
1875             output.print(generateTemp(fm,fc.getReturnTemp(),lb)+"=");
1876
1877         /* Do we need to do virtual dispatch? */
1878         if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1879             //no
1880             if (state.DSM) {
1881                 LocalityBinding fclb=locality.getBinding(lb, fc);
1882                 output.print(cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1883             } else {
1884                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1885             }
1886         } else {
1887             //yes
1888             output.print("((");
1889             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1890                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1891             else
1892                 output.print(md.getReturnType().getSafeSymbol()+" ");
1893             output.print("(*)(");
1894
1895             boolean printcomma=false;
1896             if (GENERATEPRECISEGC) {
1897                 if (state.DSM) {
1898                     LocalityBinding fclb=locality.getBinding(lb, fc);
1899                     output.print("struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1900                 } else
1901                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1902                 printcomma=true;
1903             }
1904
1905             for(int i=0;i<objectparams.numPrimitives();i++) {
1906                 TempDescriptor temp=objectparams.getPrimitive(i);
1907                 if (printcomma)
1908                     output.print(", ");
1909                 printcomma=true;
1910                 if (temp.getType().isClass()||temp.getType().isArray())
1911                     output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1912                 else
1913                     output.print(temp.getType().getSafeSymbol());
1914             }
1915
1916             if (state.DSM) {
1917                 LocalityBinding fclb=locality.getBinding(lb, fc);
1918                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getLocalityNumber(fclb)+"])");
1919             } else
1920                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1921         }
1922
1923         output.print("(");
1924         boolean needcomma=false;
1925         if (GENERATEPRECISEGC) {
1926             output.print("&__parameterlist__");
1927             needcomma=true;
1928         }
1929
1930         if (state.DSM&&locality.getBinding(lb,fc).isAtomic()) {
1931             if (needcomma)
1932                 output.print(",");
1933             output.print("trans");
1934             needcomma=true;
1935         }
1936
1937         if (!GENERATEPRECISEGC) {
1938             if (fc.getThis()!=null) {
1939                 TypeDescriptor ptd=md.getThis().getType();
1940                 if (needcomma)
1941                     output.print(",");
1942                 if (ptd.isClass()&&!ptd.isArray())
1943                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1944                 output.print(generateTemp(fm,fc.getThis(),lb));
1945                 needcomma=true;
1946             }
1947         }
1948
1949         for(int i=0;i<fc.numArgs();i++) {
1950             Descriptor var=md.getParameter(i);
1951             TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1952             if (objectparams.isParamPrim(paramtemp)) {
1953                 TempDescriptor targ=fc.getArg(i);
1954                 if (needcomma)
1955                     output.print(", ");
1956
1957                 TypeDescriptor ptd=md.getParamType(i);
1958                 if (ptd.isClass()&&!ptd.isArray())
1959                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1960                 output.print(generateTemp(fm, targ,lb));
1961                 needcomma=true;
1962             }
1963         }
1964         output.println(");");
1965         output.println("   }");
1966     }
1967
1968     private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1969         Set subclasses=typeutil.getSubClasses(thiscd);
1970         if (subclasses==null)
1971             return true;
1972         for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1973             ClassDescriptor cd=(ClassDescriptor)classit.next();
1974             Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1975             for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1976                 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1977                 if (md.matches(matchmd))
1978                     return false;
1979             }
1980         }
1981         return true;
1982     }
1983
1984     private void generateFlatFieldNode(FlatMethod fm, LocalityBinding lb, FlatFieldNode ffn, PrintWriter output) {
1985         if (state.DSM) {
1986             Integer status=locality.getNodePreTempInfo(lb,ffn).get(ffn.getSrc());
1987             if (status==LocalityAnalysis.GLOBAL) {
1988                 String field=ffn.getField().getSafeSymbol();
1989                 String src=generateTemp(fm, ffn.getSrc(),lb);
1990                 String dst=generateTemp(fm, ffn.getDst(),lb);
1991
1992                 if (ffn.getField().getType().isPtr()) {
1993
1994                     //TODO: Uncomment this when we have runtime support
1995                     //if (ffn.getSrc()==ffn.getDst()) {
1996                     //output.println("{");
1997                     //output.println("void * temp="+src+";");
1998                     //output.println("if (temp&0x1) {");
1999                     //output.println("temp=(void *) transRead(trans, (unsigned int) temp);");
2000                     //output.println(src+"->"+field+"="+temp+";");
2001                     //output.println("}");
2002                     //output.println(dst+"=temp;");
2003                     //output.println("}");
2004                     //} else {
2005                     output.println(dst+"="+ src +"->"+field+ ";");
2006                     //output.println("if ("+dst+"&0x1) {");
2007                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
2008                     //output.println(src+"->"+field+"="+src+"->"+field+";");
2009                     //output.println("}");
2010                     //}
2011                 } else {
2012                     output.println(dst+"="+ src+"->"+field+";");
2013                 }
2014             } else if (status==LocalityAnalysis.LOCAL) {
2015                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2016             } else if (status==LocalityAnalysis.EITHER) {
2017                 //Code is reading from a null pointer
2018                 output.println("if ("+generateTemp(fm, ffn.getSrc(),lb)+") {");
2019                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2020                 //This should throw a suitable null pointer error
2021                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2022             } else
2023                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2024         } else
2025             output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2026     }
2027
2028
2029     private void generateFlatSetFieldNode(FlatMethod fm, LocalityBinding lb, FlatSetFieldNode fsfn, PrintWriter output) {
2030         if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
2031             throw new Error("Can't set array length");
2032         if (state.DSM && locality.getAtomic(lb).get(fsfn).intValue()>0) {
2033             Integer statussrc=locality.getNodePreTempInfo(lb,fsfn).get(fsfn.getSrc());
2034             Integer statusdst=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
2035             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2036
2037             String src=generateTemp(fm,fsfn.getSrc(),lb);
2038             String dst=generateTemp(fm,fsfn.getDst(),lb);
2039             if (srcglobal) {
2040                 output.println("{");
2041                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2042             }
2043             if (statusdst.equals(LocalityAnalysis.GLOBAL)) {
2044                 String glbdst=dst;
2045                 //mark it dirty
2046                 output.println("*((unsigned int *)&("+dst+"->___localcopy___))|=DIRTY;");
2047                 if (srcglobal) {
2048                     output.println("*((unsigned int *)&("+glbdst+"->"+ fsfn.getField().getSafeSymbol()+"))=srcoid;");
2049                 } else
2050                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2051             } else if (statusdst.equals(LocalityAnalysis.LOCAL)) {
2052                 /** Check if we need to copy */
2053                 output.println("if(!"+dst+"->"+localcopystr+") {");
2054                 /* Link object into list */
2055                 String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2056                 output.println(revertptr+"=trans->revertlist;");
2057                 if (GENERATEPRECISEGC)
2058                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
2059                 else
2060                     output.println("COPY_OBJ("+dst+");");
2061                 output.println(dst+"->"+nextobjstr+"="+revertptr+";");
2062                 output.println("trans->revertlist=(struct ___Object___ *)"+dst+";");
2063                 output.println("}");
2064                 if (srcglobal)
2065                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2066                 else
2067                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2068             } else if (statusdst.equals(LocalityAnalysis.EITHER)) {
2069                 //writing to a null...bad
2070                 output.println("if ("+dst+") {");
2071                 output.println("printf(\"BIG ERROR 2\\n\");exit(-1);}");
2072                 if (srcglobal)
2073                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2074                 else
2075                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2076             }
2077             if (srcglobal) {
2078                 output.println("}");
2079             }
2080         } else {
2081             output.println(generateTemp(fm, fsfn.getDst(),lb)+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc(),lb)+";");
2082         }
2083     }
2084
2085     private void generateFlatElementNode(FlatMethod fm, LocalityBinding lb, FlatElementNode fen, PrintWriter output) {
2086         TypeDescriptor elementtype=fen.getSrc().getType().dereference();
2087         String type="";
2088
2089         if (elementtype.isArray()||elementtype.isClass())
2090             type="void *";
2091         else
2092             type=elementtype.getSafeSymbol()+" ";
2093
2094         if (fen.needsBoundsCheck()) {
2095             output.println("if ("+generateTemp(fm, fen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fen.getIndex(),lb)+" >= "+generateTemp(fm,fen.getSrc(),lb) + "->___length___)");
2096             output.println("failedboundschk();");
2097         }
2098         if (state.DSM) {
2099             Integer status=locality.getNodePreTempInfo(lb,fen).get(fen.getSrc());
2100             if (status==LocalityAnalysis.GLOBAL) {
2101                 String dst=generateTemp(fm, fen.getDst(),lb);
2102
2103                 if (elementtype.isPtr()) {
2104                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2105                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
2106                 } else {
2107                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2108                 }
2109             } else if (status==LocalityAnalysis.LOCAL) {
2110                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2111             } else if (status==LocalityAnalysis.EITHER) {
2112                 //Code is reading from a null pointer
2113                 output.println("if ("+generateTemp(fm, fen.getSrc(),lb)+") {");
2114                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2115                 //This should throw a suitable null pointer error
2116                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2117             } else
2118                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2119         } else {
2120             output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2121         }
2122     }
2123
2124     private void generateFlatSetElementNode(FlatMethod fm, LocalityBinding lb, FlatSetElementNode fsen, PrintWriter output) {
2125         //TODO: need dynamic check to make sure this assignment is actually legal
2126         //Because Object[] could actually be something more specific...ie. Integer[]
2127
2128         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
2129         String type="";
2130
2131         if (elementtype.isArray()||elementtype.isClass())
2132             type="void *";
2133         else
2134             type=elementtype.getSafeSymbol()+" ";
2135
2136
2137         if (fsen.needsBoundsCheck()) {
2138             output.println("if ("+generateTemp(fm, fsen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fsen.getIndex(),lb)+" >= "+generateTemp(fm,fsen.getDst(),lb) + "->___length___)");
2139             output.println("failedboundschk();");
2140         }
2141
2142         if (state.DSM && locality.getAtomic(lb).get(fsen).intValue()>0) {
2143             Integer statussrc=locality.getNodePreTempInfo(lb,fsen).get(fsen.getSrc());
2144             Integer statusdst=locality.getNodePreTempInfo(lb,fsen).get(fsen.getDst());
2145             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2146             boolean dstglobal=statusdst==LocalityAnalysis.GLOBAL;
2147             boolean dstlocal=statusdst==LocalityAnalysis.LOCAL;
2148
2149             if (dstglobal) {
2150                 output.println("*((unsigned int *)&("+generateTemp(fm,fsen.getDst(),lb)+"->___localcopy___))|=DIRTY;");
2151             } else if (dstlocal) {
2152                 /** Check if we need to copy */
2153                 String dst=generateTemp(fm, fsen.getDst(),lb);
2154                 output.println("if(!"+dst+"->"+localcopystr+") {");
2155                 /* Link object into list */
2156                 String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2157                 output.println(revertptr+"=trans->revertlist;");
2158                 if (GENERATEPRECISEGC)
2159                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
2160                 else
2161                     output.println("COPY_OBJ("+dst+");");
2162                 output.println(dst+"->"+nextobjstr+"="+revertptr+";");
2163                 output.println("trans->revertlist=(struct ___Object___ *)"+dst+";");
2164                 output.println("}");
2165             } else throw new Error("Unknown array type");
2166             if (srcglobal) {
2167                 output.println("{");
2168                 String src=generateTemp(fm, fsen.getSrc(), lb);
2169                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2170                 output.println("((int*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]=srcoid;");
2171                 output.println("}");
2172             } else {
2173                 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2174             }
2175         } else
2176             output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2177     }
2178
2179     private void generateFlatNew(FlatMethod fm, LocalityBinding lb, FlatNew fn, PrintWriter output) {
2180         if (state.DSM && locality.getAtomic(lb).get(fn).intValue()>0&&!fn.isGlobal()) {
2181             //Stash pointer in case of GC
2182             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2183             output.println(revertptr+"=trans->revertlist;");
2184         }
2185         if (fn.getType().isArray()) {
2186             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
2187             if (fn.isGlobal()) {
2188                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarrayglobal(trans, "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2189             } else if (GENERATEPRECISEGC) {
2190                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2191             } else {
2192                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2193             }
2194         } else {
2195             if (fn.isGlobal()) {
2196                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newglobal(trans, "+fn.getType().getClassDesc().getId()+");");
2197             } else if (GENERATEPRECISEGC) {
2198                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
2199             } else {
2200                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
2201             }
2202         }
2203         if (state.DSM && locality.getAtomic(lb).get(fn).intValue()>0&&!fn.isGlobal()) {
2204             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2205             output.println("trans->revertlist="+revertptr+";");
2206         }
2207     }
2208
2209     private void generateFlatTagDeclaration(FlatMethod fm, LocalityBinding lb, FlatTagDeclaration fn, PrintWriter output) {
2210         if (GENERATEPRECISEGC) {
2211             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
2212         } else {
2213             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag("+state.getTagId(fn.getType())+");");
2214         }
2215     }
2216
2217     private void generateFlatOpNode(FlatMethod fm, LocalityBinding lb, FlatOpNode fon, PrintWriter output) {
2218         if (fon.getRight()!=null) {
2219             if (fon.getOp().getOp()==Operation.URIGHTSHIFT) {
2220                 if (fon.getLeft().getType().isLong())
2221                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned long long)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2222                 else
2223                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned int)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2224
2225             } else
2226                 output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+fon.getOp().toString()+generateTemp(fm,fon.getRight(),lb)+";");
2227         } else if (fon.getOp().getOp()==Operation.ASSIGN)
2228             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2229         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
2230             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2231         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
2232             output.println(generateTemp(fm, fon.getDest(),lb)+" = -"+generateTemp(fm, fon.getLeft(),lb)+";");
2233         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
2234             output.println(generateTemp(fm, fon.getDest(),lb)+" = !"+generateTemp(fm, fon.getLeft(),lb)+";");
2235         else if (fon.getOp().getOp()==Operation.COMP)
2236             output.println(generateTemp(fm, fon.getDest(),lb)+" = ~"+generateTemp(fm, fon.getLeft(),lb)+";");
2237         else if (fon.getOp().getOp()==Operation.ISAVAILABLE) {
2238             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+"->fses==NULL;");
2239         } else
2240             output.println(generateTemp(fm, fon.getDest(),lb)+fon.getOp().toString()+generateTemp(fm, fon.getLeft(),lb)+";");
2241     }
2242
2243     private void generateFlatCastNode(FlatMethod fm, LocalityBinding lb, FlatCastNode fcn, PrintWriter output) {
2244         /* TODO: Do type check here */
2245         if (fcn.getType().isArray()) {
2246             throw new Error();
2247         } else if (fcn.getType().isClass())
2248             output.println(generateTemp(fm,fcn.getDst(),lb)+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc(),lb)+";");
2249         else
2250             output.println(generateTemp(fm,fcn.getDst(),lb)+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc(),lb)+";");
2251     }
2252
2253     private void generateFlatLiteralNode(FlatMethod fm, LocalityBinding lb, FlatLiteralNode fln, PrintWriter output) {
2254         if (fln.getValue()==null)
2255             output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2256         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
2257             if (GENERATEPRECISEGC) {
2258                 if (state.DSM && locality.getAtomic(lb).get(fln).intValue()>0) {
2259                     //Stash pointer in case of GC
2260                     String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2261                     output.println(revertptr+"=trans->revertlist;");
2262                 }
2263                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2264                 if (state.DSM && locality.getAtomic(lb).get(fln).intValue()>0) {
2265                     //Stash pointer in case of GC
2266                     String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2267                     output.println("trans->revertlist="+revertptr+";");
2268                 }
2269             } else {
2270                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2271             }
2272         } else if (fln.getType().isBoolean()) {
2273             if (((Boolean)fln.getValue()).booleanValue())
2274                 output.println(generateTemp(fm, fln.getDst(),lb)+"=1;");
2275             else
2276                 output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2277         } else if (fln.getType().isChar()) {
2278             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
2279             output.println(generateTemp(fm, fln.getDst(),lb)+"='"+st+"';");
2280         } else if (fln.getType().isLong()) {
2281             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+"LL;");
2282         } else
2283             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+";");
2284     }
2285
2286     private void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
2287         if (frn.getReturnTemp()!=null) {
2288             if (frn.getReturnTemp().getType().isPtr())
2289                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2290             else
2291                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2292         } else
2293             output.println("return;");
2294     }
2295
2296     private void generateFlatCondBranch(FlatMethod fm, LocalityBinding lb, FlatCondBranch fcb, String label, PrintWriter output) {
2297         output.println("if (!"+generateTemp(fm, fcb.getTest(),lb)+") goto "+label+";");
2298     }
2299
2300     /** This method generates header information for the method or
2301      * task referenced by the Descriptor des. */
2302
2303     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
2304         /* Print header */
2305         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
2306         MethodDescriptor md=null;
2307         TaskDescriptor task=null;
2308         if (des instanceof MethodDescriptor)
2309             md=(MethodDescriptor) des;
2310         else
2311             task=(TaskDescriptor) des;
2312
2313         ClassDescriptor cn=md!=null?md.getClassDesc():null;
2314
2315         if (md!=null&&md.getReturnType()!=null) {
2316             if (md.getReturnType().isClass()||md.getReturnType().isArray())
2317                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
2318             else
2319                 output.print(md.getReturnType().getSafeSymbol()+" ");
2320         } else
2321             //catch the constructor case
2322             output.print("void ");
2323         if (md!=null) {
2324             if (state.DSM) {
2325                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2326             } else
2327                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2328         } else
2329             output.print(task.getSafeSymbol()+"(");
2330
2331         boolean printcomma=false;
2332         if (GENERATEPRECISEGC) {
2333             if (md!=null) {
2334                 if (state.DSM) {
2335                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2336                 } else
2337                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2338             } else
2339                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
2340             printcomma=true;
2341         }
2342
2343         if (state.DSM&&lb.isAtomic()) {
2344             if (printcomma)
2345                 output.print(", ");
2346             output.print("transrecord_t * trans");
2347             printcomma=true;
2348         }
2349
2350         if (md!=null) {
2351             /* Method */
2352             for(int i=0;i<objectparams.numPrimitives();i++) {
2353                 TempDescriptor temp=objectparams.getPrimitive(i);
2354                 if (printcomma)
2355                     output.print(", ");
2356                 printcomma=true;
2357                 if (temp.getType().isClass()||temp.getType().isArray())
2358                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
2359                 else
2360                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
2361             }
2362             output.println(") {");
2363         } else if (!GENERATEPRECISEGC) {
2364             /* Imprecise Task */
2365             output.println("void * parameterarray[]) {");
2366             /* Unpack variables */
2367             for(int i=0;i<objectparams.numPrimitives();i++) {
2368                 TempDescriptor temp=objectparams.getPrimitive(i);
2369                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
2370             }
2371             for(int i=0;i<fm.numTags();i++) {
2372                 TempDescriptor temp=fm.getTag(i);
2373                 int offset=i+objectparams.numPrimitives();
2374                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
2375             }
2376
2377             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
2378                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
2379         } else output.println(") {");
2380     }
2381
2382     public void generateFlatFlagActionNode(FlatMethod fm, LocalityBinding lb, FlatFlagActionNode ffan, PrintWriter output) {
2383         output.println("/* FlatFlagActionNode */");
2384
2385
2386         /* Process tag changes */
2387         Relation tagsettable=new Relation();
2388         Relation tagcleartable=new Relation();
2389
2390         Iterator tagsit=ffan.getTempTagPairs();
2391         while (tagsit.hasNext()) {
2392             TempTagPair ttp=(TempTagPair) tagsit.next();
2393             TempDescriptor objtmp=ttp.getTemp();
2394             TagDescriptor tag=ttp.getTag();
2395             TempDescriptor tagtmp=ttp.getTagTemp();
2396             boolean tagstatus=ffan.getTagChange(ttp);
2397             if (tagstatus) {
2398                 tagsettable.put(objtmp, tagtmp);
2399             } else {
2400                 tagcleartable.put(objtmp, tagtmp);
2401             }
2402         }
2403
2404
2405         Hashtable flagandtable=new Hashtable();
2406         Hashtable flagortable=new Hashtable();
2407
2408         /* Process flag changes */
2409         Iterator flagsit=ffan.getTempFlagPairs();
2410         while(flagsit.hasNext()) {
2411             TempFlagPair tfp=(TempFlagPair)flagsit.next();
2412             TempDescriptor temp=tfp.getTemp();
2413             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
2414             FlagDescriptor flag=tfp.getFlag();
2415             if (flag==null) {
2416                 //Newly allocate objects that don't set any flags case
2417                 if (flagortable.containsKey(temp)) {
2418                     throw new Error();
2419                 }
2420                 int mask=0;
2421                 flagortable.put(temp,new Integer(mask));
2422             } else {
2423                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
2424                 boolean flagstatus=ffan.getFlagChange(tfp);
2425                 if (flagstatus) {
2426                     int mask=0;
2427                     if (flagortable.containsKey(temp)) {
2428                         mask=((Integer)flagortable.get(temp)).intValue();
2429                     }
2430                     mask|=flagid;
2431                     flagortable.put(temp,new Integer(mask));
2432                 } else {
2433                     int mask=0xFFFFFFFF;
2434                     if (flagandtable.containsKey(temp)) {
2435                         mask=((Integer)flagandtable.get(temp)).intValue();
2436                     }
2437                     mask&=(0xFFFFFFFF^flagid);
2438                     flagandtable.put(temp,new Integer(mask));
2439                 }
2440             }
2441         }
2442
2443
2444         HashSet flagtagset=new HashSet();
2445         flagtagset.addAll(flagortable.keySet());
2446         flagtagset.addAll(flagandtable.keySet());
2447         flagtagset.addAll(tagsettable.keySet());
2448         flagtagset.addAll(tagcleartable.keySet());
2449
2450         Iterator ftit=flagtagset.iterator();
2451         while(ftit.hasNext()) {
2452             TempDescriptor temp=(TempDescriptor)ftit.next();
2453
2454
2455             Set tagtmps=tagcleartable.get(temp);
2456             if (tagtmps!=null) {
2457                 Iterator tagit=tagtmps.iterator();
2458                 while(tagit.hasNext()) {
2459                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2460                     if (GENERATEPRECISEGC)
2461                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2462                     else
2463                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2464                 }
2465             }
2466
2467             tagtmps=tagsettable.get(temp);
2468             if (tagtmps!=null) {
2469                 Iterator tagit=tagtmps.iterator();
2470                 while(tagit.hasNext()) {
2471                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2472                     if (GENERATEPRECISEGC)
2473                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2474                     else
2475                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp, lb)+", "+generateTemp(fm,tagtmp, lb)+");");
2476                 }
2477             }
2478
2479             int ormask=0;
2480             int andmask=0xFFFFFFF;
2481
2482             if (flagortable.containsKey(temp))
2483                 ormask=((Integer)flagortable.get(temp)).intValue();
2484             if (flagandtable.containsKey(temp))
2485                 andmask=((Integer)flagandtable.get(temp)).intValue();
2486             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2487                 output.println("flagorandinit("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2488             } else {
2489                 output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2490             }
2491         }
2492     }
2493
2494     void generateOptionalHeader(PrintWriter headers) {
2495
2496          //GENERATE HEADERS
2497          headers.println("#include \"task.h\"\n\n");
2498          headers.println("#ifndef _OPTIONAL_STRUCT_");
2499          headers.println("#define _OPTIONAL_STRUCT_");
2500
2501          //STRUCT PREDICATEMEMBER
2502          headers.println("struct predicatemember{");
2503          headers.println("int type;");
2504          headers.println("int numdnfterms;");
2505          headers.println("int * flags;");
2506          headers.println("int numtags;");
2507          headers.println("int * tags;\n};\n\n");
2508
2509          //STRUCT OPTIONALTASKDESCRIPTOR
2510          headers.println("struct optionaltaskdescriptor{");
2511          headers.println("struct taskdescriptor * task;");
2512          headers.println("int index;");
2513          headers.println("int numenterflags;");
2514          headers.println("int * enterflags;");
2515          headers.println("int numpredicatemembers;");
2516          headers.println("struct predicatemember ** predicatememberarray;");
2517          headers.println("};\n\n");
2518
2519          //STRUCT TASKFAILURE
2520          headers.println("struct taskfailure {");
2521          headers.println("struct taskdescriptor * task;");
2522          headers.println("int index;");
2523          headers.println("int numoptionaltaskdescriptors;");
2524          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2525
2526          //STRUCT FSANALYSISWRAPPER
2527          headers.println("struct fsanalysiswrapper{");
2528          headers.println("int  flags;");
2529          headers.println("int numtags;");
2530          headers.println("int * tags;");
2531          headers.println("int numtaskfailures;");
2532          headers.println("struct taskfailure ** taskfailurearray;");
2533          headers.println("int numoptionaltaskdescriptors;");
2534          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2535
2536          //STRUCT CLASSANALYSISWRAPPER
2537          headers.println("struct classanalysiswrapper{");
2538          headers.println("int type;");
2539          headers.println("int numotd;");
2540          headers.println("struct optionaltaskdescriptor ** otdarray;");
2541          headers.println("int numfsanalysiswrappers;");
2542          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};");
2543
2544          headers.println("extern struct classanalysiswrapper * classanalysiswrapperarray[];");
2545
2546          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2547          while(taskit.hasNext()) {
2548              TaskDescriptor td=(TaskDescriptor)taskit.next();
2549              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2550          }
2551
2552     }
2553
2554     //CHECK OVER THIS -- THERE COULD BE SOME ERRORS HERE
2555     int generateOptionalPredicate(Predicate predicate, OptionalTaskDescriptor otd, ClassDescriptor cdtemp, PrintWriter output) {
2556         int predicateindex = 0;
2557         //iterate through the classes concerned by the predicate
2558         Set c_vard = predicate.vardescriptors;
2559         Hashtable<TempDescriptor, Integer> slotnumber=new Hashtable<TempDescriptor, Integer>();
2560         int current_slot=0;
2561
2562         for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2563             VarDescriptor vard = (VarDescriptor)vard_it.next();
2564             TypeDescriptor typed = vard.getType();
2565
2566             //generate for flags
2567             HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2568             output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2569             int numberterms=0;
2570             if (fen_hashset!=null){
2571                 for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2572                     FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2573                     if (fen!=null) {
2574                         DNFFlag dflag=fen.getDNF();
2575                         numberterms+=dflag.size();
2576
2577                         Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2578
2579                         for(int j=0;j<dflag.size();j++) {
2580                             if (j!=0)
2581                                 output.println(",");
2582                             Vector term=dflag.get(j);
2583                             int andmask=0;
2584                             int checkmask=0;
2585                             for(int k=0;k<term.size();k++) {
2586                                 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2587                                 FlagDescriptor fd=dfa.getFlag();
2588                                 boolean negated=dfa.getNegated();
2589                                 int flagid=1<<((Integer)flags.get(fd)).intValue();
2590                                 andmask|=flagid;
2591                                 if (!negated)
2592                                     checkmask|=flagid;
2593                             }
2594                             output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2595                         }
2596                     }
2597                 }
2598             }
2599             output.println("};\n");
2600
2601             //generate for tags
2602             TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2603             output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2604             int numtags = 0;
2605             if (tagel!=null){
2606                 for(int j=0;j<tagel.numTags();j++) {
2607                     if (j!=0)
2608                         output.println(",");
2609                     TempDescriptor tmp=tagel.getTemp(j);
2610                     if (!slotnumber.containsKey(tmp)) {
2611                         Integer slotint=new Integer(current_slot++);
2612                         slotnumber.put(tmp,slotint);
2613                     }
2614                     int slot=slotnumber.get(tmp).intValue();
2615                     output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
2616                 }
2617                 numtags = tagel.numTags();
2618             }
2619             output.println("};");
2620
2621             //store the result into a predicatemember struct
2622             output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2623             output.println("/*type*/"+typed.getClassDesc().getId()+",");
2624             output.println("/* number of dnf terms */"+numberterms+",");
2625             output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2626             output.println("/* number of tag */"+numtags+",");
2627             output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2628             output.println("};\n");
2629             predicateindex++;
2630         }
2631
2632
2633         //generate an array that stores the entire predicate
2634         output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2635         for( int j = 0; j<predicateindex; j++){
2636             if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2637             else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2638         }
2639         output.println("};\n");
2640         return predicateindex;
2641     }
2642
2643
2644      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, Set<OptionalTaskDescriptor>>> safeexecution, Hashtable optionaltaskdescriptors) {
2645          generateOptionalHeader(headers);
2646          //GENERATE STRUCTS
2647          output.println("#include \"optionalstruct.h\"\n\n");
2648          output.println("#include \"stdlib.h\"\n");
2649
2650          HashSet processedcd = new HashSet();
2651          int maxotd=0;
2652          Enumeration e = safeexecution.keys();
2653          while (e.hasMoreElements()) {
2654              int numotd=0;
2655              //get the class
2656              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2657              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2658
2659              //Generate the struct of optionals
2660              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2661              numotd = c_otd.size();
2662              if(maxotd<numotd) maxotd = numotd;
2663              if( !c_otd.isEmpty() ){
2664                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2665                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2666
2667                      //generate the int arrays for the predicate
2668                      Predicate predicate = otd.predicate;
2669                      int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
2670                      TreeSet<Integer> fsset=new TreeSet<Integer>();
2671                      //iterate through possible FSes corresponding to
2672                      //the state when entering
2673
2674                      for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext();){
2675                          FlagState fs = (FlagState)fses.next();
2676                          int flagid=0;
2677                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2678                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2679                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2680                              flagid|=id;
2681                          }
2682                          fsset.add(new Integer(flagid));
2683                          //tag information not needed because tag
2684                          //changes are not tolerated.
2685                      }
2686
2687                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2688                      boolean needcomma=false;
2689                      for(Iterator<Integer> it=fsset.iterator();it.hasNext();) {
2690                          if(needcomma)
2691                              output.print(", ");
2692                          output.println(it.next());
2693                      }
2694
2695                      output.println("};\n");
2696
2697
2698                      //generate optionaltaskdescriptor that actually
2699                      //includes exit fses, predicate and the task
2700                      //concerned
2701                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2702                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2703                      output.println("/*index*/"+otd.getIndex()+",");
2704                      output.println("/*number of enter flags*/"+fsset.size()+",");
2705                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2706                      output.println("/*number of members */"+predicateindex+",");
2707                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2708                      output.println("};\n");
2709                  }
2710              } else
2711                  continue;
2712              // if there are no optionals, there is no need to build the rest of the struct
2713
2714              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2715              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2716              if( !c_otd.isEmpty() ){
2717                  boolean needcomma=false;
2718                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2719                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2720                      if(needcomma)
2721                          output.println(",");
2722                      needcomma=true;
2723                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2724                  }
2725              }
2726              output.println("};\n");
2727
2728              //get all the possible flagstates reachable by an object
2729              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2730              int fscounter = 0;
2731              TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
2732              fsts.addAll(hashtbtemp.keySet());
2733              for(Iterator fsit=fsts.iterator();fsit.hasNext();) {
2734                  FlagState fs = (FlagState)fsit.next();
2735                  fscounter++;
2736
2737                  //get the set of OptionalTaskDescriptors corresponding
2738                  HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
2739                  //iterate through the OptionalTaskDescriptors and
2740                  //store the pointers to the optionals struct (see on
2741                  //top) into an array
2742
2743                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2744                  for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext();){
2745                      OptionalTaskDescriptor mm = mos.next();
2746                      if(!mos.hasNext())
2747                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2748                      else
2749                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2750                  }
2751
2752                  output.println("};\n");
2753
2754                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2755
2756                  int flagid=0;
2757                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2758                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2759                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2760                      flagid|=id;
2761                  }
2762
2763                  //process tag information
2764
2765                  int tagcounter = 0;
2766                  boolean first = true;
2767                  Enumeration tag_enum = fs.getTags();
2768                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2769                  while(tag_enum.hasMoreElements()){
2770                      tagcounter++;
2771                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2772                      if(first==true)
2773                          first = false;
2774                      else
2775                          output.println(", ");
2776                      output.println("/*tagid*/"+state.getTagId(tagd));
2777                  }
2778                  output.println("};");
2779
2780                  Set<TaskIndex> tiset=sa.getTaskIndex(fs);
2781                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2782                      TaskIndex ti=itti.next();
2783                      if (ti.isRuntime())
2784                          continue;
2785
2786                      Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
2787
2788                      output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
2789                      boolean needcomma=false;
2790                      for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator();otdit.hasNext();) {
2791                          OptionalTaskDescriptor otd=otdit.next();
2792                          if(needcomma)
2793                              output.print(", ");
2794                          needcomma=true;
2795                          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2796                      }
2797                      output.println("};");
2798
2799                      output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
2800                      output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
2801                      output.print(ti.getIndex()+", ");
2802                      output.print(otdset.size()+", ");
2803                      output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
2804                      output.println("};");
2805                  }
2806
2807                  tiset=sa.getTaskIndex(fs);
2808                  boolean needcomma=false;
2809                  int runtimeti=0;
2810                  output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2811                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2812                      TaskIndex ti=itti.next();
2813                      if (ti.isRuntime()) {
2814                          runtimeti++;
2815                          continue;
2816                      }
2817                      if (needcomma)
2818                          output.print(", ");
2819                      needcomma=true;
2820                      output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
2821                  }
2822                  output.println("};\n");
2823
2824                  //Store the result in fsanalysiswrapper
2825
2826                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2827                  output.println("/*flag*/"+flagid+",");
2828                  output.println("/* number of tags*/"+tagcounter+",");
2829                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2830                  output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
2831                  output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2832                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2833                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2834                  output.println("};\n");
2835
2836              }
2837
2838              //Build the array of fsanalysiswrappers
2839              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2840              boolean needcomma=false;
2841              for(int i = 0; i<fscounter; i++){
2842                  if (needcomma) output.print(",");
2843                  output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
2844                  needcomma=true;
2845              }
2846              output.println("};");
2847
2848              //Build the classanalysiswrapper referring to the previous array
2849              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2850              output.println("/*type*/"+cdtemp.getId()+",");
2851              output.println("/*numotd*/"+numotd+",");
2852              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2853              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2854              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2855              processedcd.add(cdtemp);
2856          }
2857
2858          //build an array containing every classes for which code has been build
2859          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2860          for(int i=0;i<state.numClasses();i++) {
2861              ClassDescriptor cn=cdarray[i];
2862              if (i>0)
2863                  output.print(", ");
2864              if (processedcd.contains(cn))
2865                  output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
2866              else
2867                  output.print("NULL");
2868          }
2869          output.println("};");
2870
2871          output.println("#define MAXOTD "+maxotd);
2872          headers.println("#endif");
2873      }
2874
2875     public List<OptionalTaskDescriptor> ordertd(Set<OptionalTaskDescriptor> otdset) {
2876         Relation r=new Relation();
2877         for(Iterator<OptionalTaskDescriptor>otdit=otdset.iterator();otdit.hasNext();) {
2878             OptionalTaskDescriptor otd=otdit.next();
2879             TaskIndex ti=new TaskIndex(otd.td, otd.getIndex());
2880             r.put(ti, otd);
2881         }
2882
2883         LinkedList<OptionalTaskDescriptor> l=new LinkedList<OptionalTaskDescriptor>();
2884         for(Iterator it=r.keySet().iterator();it.hasNext();) {
2885             Set s=r.get(it.next());
2886             for(Iterator it2=s.iterator();it2.hasNext();) {
2887                 OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
2888                 l.add(otd);
2889             }
2890         }
2891
2892         return l;
2893     }
2894 }
2895
2896
2897
2898
2899
2900