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()) {
 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             Iterator fieldit=cn.getFields();
 928             while(fieldit.hasNext()) {
 929                 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
 930                 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
 931                     fields.add(fd);
 932             }
 933         }
 934         Vector fields=(Vector)fieldorder.get(cn);
 935
 936         for(int i=0;i<fields.size();i++) {
 937             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 938             if (fd.getType().isClass()||fd.getType().isArray())
 939                 classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
 940             else
 941                 classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
 942         }
 943     }
 944
 945
 946     /* Map flags to integers consistently between inherited
 947      * classes. */
 948
 949     private void mapFlags(ClassDescriptor cn) {
 950         ClassDescriptor sp=cn.getSuperDesc();
 951         if (sp!=null)
 952             mapFlags(sp);
 953         int max=0;
 954         if (!flagorder.containsKey(cn)) {
 955             Hashtable flags=new Hashtable();
 956             flagorder.put(cn,flags);
 957             if (sp!=null) {
 958                 Hashtable superflags=(Hashtable)flagorder.get(sp);
 959                 Iterator superflagit=superflags.keySet().iterator();
 960                 while(superflagit.hasNext()) {
 961                     FlagDescriptor fd=(FlagDescriptor)superflagit.next();
 962                     Integer number=(Integer)superflags.get(fd);
 963                     flags.put(fd, number);
 964                     if ((number.intValue()+1)>max)
 965                         max=number.intValue()+1;
 966                 }
 967             }
 968
 969             Iterator flagit=cn.getFlags();
 970             while(flagit.hasNext()) {
 971                 FlagDescriptor fd=(FlagDescriptor)flagit.next();
 972                 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
 973                     flags.put(fd, new Integer(max++));
 974             }
 975         }
 976     }
 977
 978
 979     /** This function outputs (1) structures that parameters are
 980      * passed in (when PRECISE GC is enabled) and (2) function
 981      * prototypes for the methods */
 982
 983     private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
 984         /* Output class structure */
 985         classdefout.println("struct "+cn.getSafeSymbol()+" {");
 986         classdefout.println("  int type;");
 987         if (state.THREAD) {
 988             classdefout.println("  pthread_t tid;");
 989             classdefout.println("  void * lockentry;");
 990             classdefout.println("  int lockcount;");
 991         }
 992
 993         if (state.TASK) {
 994             classdefout.println("  int flag;");
 995             classdefout.println("  void * flagptr;");
 996             if (state.OPTIONAL){
 997                 classdefout.println("  int numfses;");
 998                 classdefout.println("  int * fses;");
 999             }
1000         }
1001         printClassStruct(cn, classdefout);
1002         classdefout.println("};\n");
1003
1004         if (state.DSM) {
1005             /* Cycle through LocalityBindings */
1006             HashSet<MethodDescriptor> nativemethods=new HashSet<MethodDescriptor>();
1007             Set<LocalityBinding> lbset=locality.getClassBindings(cn);
1008             if (lbset!=null) {
1009                 for(Iterator<LocalityBinding> lbit=lbset.iterator();lbit.hasNext();) {
1010                     LocalityBinding lb=lbit.next();
1011                     MethodDescriptor md=lb.getMethod();
1012                     if (md.getModifiers().isNative()) {
1013                         //make sure we only print a native method once
1014                         if (nativemethods.contains(md)) {
1015                             FlatMethod fm=state.getMethodFlat(md);
1016                             generateTempStructs(fm, lb);
1017                             continue;
1018                         } else
1019                             nativemethods.add(md);
1020                     }
1021                     generateMethod(cn, md, lb, headersout, output);
1022                 }
1023             }
1024             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1025                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1026                 if (md.getModifiers().isNative()&&!nativemethods.contains(md)) {
1027                     //Need to build param structure for library code
1028                     FlatMethod fm=state.getMethodFlat(md);
1029                     generateTempStructs(fm, null);
1030                     generateMethodParam(cn, md, null, output);
1031                 }
1032             }
1033
1034         } else
1035             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1036                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1037                 generateMethod(cn, md, null, headersout, output);
1038             }
1039     }
1040
1041     private void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter output) {
1042         /* Output parameter structure */
1043         if (GENERATEPRECISEGC) {
1044             ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1045             if (state.DSM&&lb!=null)
1046                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1047             else
1048                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1049             output.println("  int size;");
1050             output.println("  void * next;");
1051             for(int i=0;i<objectparams.numPointers();i++) {
1052                 TempDescriptor temp=objectparams.getPointer(i);
1053                 output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1054             }
1055             output.println("};\n");
1056         }
1057     }
1058
1059
1060     private void generateMethod(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter headersout, PrintWriter output) {
1061         FlatMethod fm=state.getMethodFlat(md);
1062         generateTempStructs(fm, lb);
1063
1064         ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1065         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md);
1066
1067         generateMethodParam(cn, md, lb, output);
1068
1069         /* Output temp structure */
1070         if (GENERATEPRECISEGC) {
1071             if (state.DSM)
1072                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1073             else
1074                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1075             output.println("  int size;");
1076             output.println("  void * next;");
1077             for(int i=0;i<objecttemps.numPointers();i++) {
1078                 TempDescriptor temp=objecttemps.getPointer(i);
1079                 if (temp.getType().isNull())
1080                     output.println("  void * "+temp.getSafeSymbol()+";");
1081                 else
1082                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1083             }
1084             output.println("};\n");
1085         }
1086
1087         /********* Output method declaration ***********/
1088
1089         /* First the return type */
1090         if (md.getReturnType()!=null) {
1091             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1092                 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1093             else
1094                 headersout.print(md.getReturnType().getSafeSymbol()+" ");
1095         } else
1096             //catch the constructor case
1097             headersout.print("void ");
1098
1099         /* Next the method name */
1100         if (state.DSM) {
1101             headersout.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1102         } else
1103             headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1104
1105         boolean printcomma=false;
1106         if (GENERATEPRECISEGC) {
1107             if (state.DSM) {
1108                 headersout.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1109             } else
1110                 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1111             printcomma=true;
1112         }
1113
1114         if (state.DSM&&lb.isAtomic()) {
1115             if (printcomma)
1116                 headersout.print(", ");
1117             headersout.print("transrecord_t * trans");
1118             printcomma=true;
1119         }
1120
1121         /*  Output parameter list*/
1122         for(int i=0;i<objectparams.numPrimitives();i++) {
1123             TempDescriptor temp=objectparams.getPrimitive(i);
1124             if (printcomma)
1125                 headersout.print(", ");
1126             printcomma=true;
1127             if (temp.getType().isClass()||temp.getType().isArray())
1128                 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1129             else
1130                 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1131         }
1132         headersout.println(");\n");
1133     }
1134
1135
1136     /** This function outputs (1) structures that parameters are
1137      * passed in (when PRECISE GC is enabled) and (2) function
1138      * prototypes for the tasks */
1139
1140     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
1141         /* Cycle through tasks */
1142         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
1143
1144         while(taskit.hasNext()) {
1145             /* Classify parameters */
1146             TaskDescriptor task=(TaskDescriptor)taskit.next();
1147             FlatMethod fm=state.getMethodFlat(task);
1148             generateTempStructs(fm, null);
1149
1150             ParamsObject objectparams=(ParamsObject) paramstable.get(task);
1151             TempObject objecttemps=(TempObject) tempstable.get(task);
1152
1153             /* Output parameter structure */
1154             if (GENERATEPRECISEGC) {
1155                 output.println("struct "+task.getSafeSymbol()+"_params {");
1156
1157                 output.println("  int size;");
1158                 output.println("  void * next;");
1159                 for(int i=0;i<objectparams.numPointers();i++) {
1160                     TempDescriptor temp=objectparams.getPointer(i);
1161                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1162                 }
1163
1164                 output.println("};\n");
1165                 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
1166                     maxtaskparams=objectparams.numPointers()+fm.numTags();
1167                 }
1168             }
1169
1170             /* Output temp structure */
1171             if (GENERATEPRECISEGC) {
1172                 output.println("struct "+task.getSafeSymbol()+"_locals {");
1173                 output.println("  int size;");
1174                 output.println("  void * next;");
1175                 for(int i=0;i<objecttemps.numPointers();i++) {
1176                     TempDescriptor temp=objecttemps.getPointer(i);
1177                     if (temp.getType().isNull())
1178                         output.println("  void * "+temp.getSafeSymbol()+";");
1179                     else if(temp.getType().isTag())
1180                         output.println("  struct "+
1181                                        (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1182                     else
1183                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1184                 }
1185                 output.println("};\n");
1186             }
1187
1188             /* Output task declaration */
1189             headersout.print("void " + task.getSafeSymbol()+"(");
1190
1191             boolean printcomma=false;
1192             if (GENERATEPRECISEGC) {
1193                 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1194             } else
1195                 headersout.print("void * parameterarray[]");
1196             headersout.println(");\n");
1197         }
1198     }
1199
1200     /***** Generate code for FlatMethod fm. *****/
1201
1202     private void generateFlatMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
1203         MethodDescriptor md=fm.getMethod();
1204
1205         TaskDescriptor task=fm.getTask();
1206
1207         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1208
1209         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:md!=null?md:task);
1210         generateHeader(fm, lb, md!=null?md:task,output);
1211         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1212         if (state.DSM&&lb.getHasAtomic()) {
1213             output.println("transrecord_t * trans;");
1214         }
1215
1216         if (GENERATEPRECISEGC) {
1217             if (md!=null&&state.DSM)
1218                 output.print("   struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1219             else if (md!=null&&!state.DSM)
1220                 output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1221             else
1222                 output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
1223
1224             output.print(objecttemp.numPointers()+",");
1225             output.print(paramsprefix);
1226             for(int j=0;j<objecttemp.numPointers();j++)
1227                 output.print(", NULL");
1228             output.println("};");
1229         }
1230
1231         for(int i=0;i<objecttemp.numPrimitives();i++) {
1232             TempDescriptor td=objecttemp.getPrimitive(i);
1233             TypeDescriptor type=td.getType();
1234             if (type.isNull())
1235                 output.println("   void * "+td.getSafeSymbol()+";");
1236             else if (type.isClass()||type.isArray())
1237                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
1238             else
1239                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
1240         }
1241
1242         /* Assign labels to FlatNode's if necessary.*/
1243
1244         Hashtable<FlatNode, Integer> nodetolabel=assignLabels(fm);
1245
1246         /* Check to see if we need to do a GC if this is a
1247          * multi-threaded program...*/
1248
1249         if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1250             output.println("checkcollect(&"+localsprefix+");");
1251         }
1252
1253         /* Do the actual code generation */
1254         FlatNode current_node=null;
1255         HashSet tovisit=new HashSet();
1256         HashSet visited=new HashSet();
1257         tovisit.add(fm.getNext(0));
1258         while(current_node!=null||!tovisit.isEmpty()) {
1259             if (current_node==null) {
1260                 current_node=(FlatNode)tovisit.iterator().next();
1261                 tovisit.remove(current_node);
1262             }
1263             visited.add(current_node);
1264             if (nodetolabel.containsKey(current_node))
1265                 output.println("L"+nodetolabel.get(current_node)+":");
1266             if (state.INSTRUCTIONFAILURE) {
1267                 if (state.THREAD||state.DSM) {
1268                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1269                 }
1270                 else
1271                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1272             }
1273             if (current_node.numNext()==0) {
1274                 output.print("   ");
1275                 generateFlatNode(fm, lb, current_node, output);
1276                 if (current_node.kind()!=FKind.FlatReturnNode) {
1277                     output.println("   return;");
1278                 }
1279                 current_node=null;
1280             } else if(current_node.numNext()==1) {
1281                 output.print("   ");
1282                 generateFlatNode(fm, lb, current_node, output);
1283                 FlatNode nextnode=current_node.getNext(0);
1284                 if (visited.contains(nextnode)) {
1285                     output.println("goto L"+nodetolabel.get(nextnode)+";");
1286                     current_node=null;
1287                 } else
1288                     current_node=nextnode;
1289             } else if (current_node.numNext()==2) {
1290                 /* Branch */
1291                 output.print("   ");
1292                 generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1293                 if (!visited.contains(current_node.getNext(1)))
1294                     tovisit.add(current_node.getNext(1));
1295                 if (visited.contains(current_node.getNext(0))) {
1296                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1297                     current_node=null;
1298                 } else
1299                     current_node=current_node.getNext(0);
1300             } else throw new Error();
1301         }
1302         output.println("}\n\n");
1303     }
1304
1305     /** This method assigns labels to FlatNodes */
1306
1307     private Hashtable<FlatNode, Integer> assignLabels(FlatMethod fm) {
1308         HashSet tovisit=new HashSet();
1309         HashSet visited=new HashSet();
1310         int labelindex=0;
1311         Hashtable<FlatNode, Integer> nodetolabel=new Hashtable<FlatNode, Integer>();
1312         tovisit.add(fm.getNext(0));
1313
1314         /*Assign labels first.  A node needs a label if the previous
1315          * node has two exits or this node is a join point. */
1316
1317         while(!tovisit.isEmpty()) {
1318             FlatNode fn=(FlatNode)tovisit.iterator().next();
1319             tovisit.remove(fn);
1320             visited.add(fn);
1321             for(int i=0;i<fn.numNext();i++) {
1322                 FlatNode nn=fn.getNext(i);
1323                 if(i>0) {
1324                     //1) Edge >1 of node
1325                     nodetolabel.put(nn,new Integer(labelindex++));
1326                 }
1327                 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1328                     tovisit.add(nn);
1329                 } else {
1330                     //2) Join point
1331                     nodetolabel.put(nn,new Integer(labelindex++));
1332                 }
1333             }
1334         }
1335         return nodetolabel;
1336     }
1337
1338
1339     /** Generate text string that corresponds to the TempDescriptor td. */
1340     private String generateTemp(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1341         MethodDescriptor md=fm.getMethod();
1342         TaskDescriptor task=fm.getTask();
1343         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1344
1345         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1346             return td.getSafeSymbol();
1347         }
1348
1349         if (objecttemps.isLocalPtr(td)) {
1350             return localsprefix+"."+td.getSafeSymbol();
1351         }
1352
1353         if (objecttemps.isParamPtr(td)) {
1354             return paramsprefix+"->"+td.getSafeSymbol();
1355         }
1356         throw new Error();
1357     }
1358
1359     private void generateFlatNode(FlatMethod fm, LocalityBinding lb, FlatNode fn, PrintWriter output) {
1360         switch(fn.kind()) {
1361         case FKind.FlatAtomicEnterNode:
1362             generateFlatAtomicEnterNode(fm, lb, (FlatAtomicEnterNode) fn, output);
1363             return;
1364         case FKind.FlatAtomicExitNode:
1365             generateFlatAtomicExitNode(fm, lb, (FlatAtomicExitNode) fn, output);
1366             return;
1367         case FKind.FlatGlobalConvNode:
1368             generateFlatGlobalConvNode(fm, lb, (FlatGlobalConvNode) fn, output);
1369             return;
1370         case FKind.FlatTagDeclaration:
1371             generateFlatTagDeclaration(fm, lb, (FlatTagDeclaration) fn,output);
1372             return;
1373         case FKind.FlatCall:
1374             generateFlatCall(fm, lb, (FlatCall) fn,output);
1375             return;
1376         case FKind.FlatFieldNode:
1377             generateFlatFieldNode(fm, lb, (FlatFieldNode) fn,output);
1378             return;
1379         case FKind.FlatElementNode:
1380             generateFlatElementNode(fm, lb, (FlatElementNode) fn,output);
1381             return;
1382         case FKind.FlatSetElementNode:
1383             generateFlatSetElementNode(fm, lb, (FlatSetElementNode) fn,output);
1384             return;
1385         case FKind.FlatSetFieldNode:
1386             generateFlatSetFieldNode(fm, lb, (FlatSetFieldNode) fn,output);
1387             return;
1388         case FKind.FlatNew:
1389             generateFlatNew(fm, lb, (FlatNew) fn,output);
1390             return;
1391         case FKind.FlatOpNode:
1392             generateFlatOpNode(fm, lb, (FlatOpNode) fn,output);
1393             return;
1394         case FKind.FlatCastNode:
1395             generateFlatCastNode(fm, lb, (FlatCastNode) fn,output);
1396             return;
1397         case FKind.FlatLiteralNode:
1398             generateFlatLiteralNode(fm, lb, (FlatLiteralNode) fn,output);
1399             return;
1400         case FKind.FlatReturnNode:
1401             generateFlatReturnNode(fm, lb, (FlatReturnNode) fn,output);
1402             return;
1403         case FKind.FlatNop:
1404             output.println("/* nop */");
1405             return;
1406         case FKind.FlatBackEdge:
1407             if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1408                 output.println("checkcollect(&"+localsprefix+");");
1409             } else
1410                 output.println("/* nop */");
1411             return;
1412         case FKind.FlatCheckNode:
1413             generateFlatCheckNode(fm, lb, (FlatCheckNode) fn, output);
1414             return;
1415         case FKind.FlatFlagActionNode:
1416             generateFlatFlagActionNode(fm, lb, (FlatFlagActionNode) fn, output);
1417             return;
1418         case FKind.FlatPrefetchNode:
1419             generateFlatPrefetchNode(fm,lb, (FlatPrefetchNode) fn, output);
1420             return;
1421         }
1422         throw new Error();
1423     }
1424
1425     public void generateFlatPrefetchNode(FlatMethod fm, LocalityBinding lb, FlatPrefetchNode fpn, PrintWriter output) {
1426             short[] arrayfields = null;
1427             Vector fieldoffset = new Vector();
1428             Vector endoffset = new Vector();
1429             Vector oids = new Vector();
1430             short offsetcount = 0;
1431             int tuplecount = 0;  //Keeps track of number of prefetch tuples that need to be generated
1432             int i,j;
1433
1434             if (state.PREFETCH) {
1435                     output.println("/* prefetch */");
1436                     output.println("; /* empty statement to avoid compiler error */");
1437                     Iterator it = fpn.hspp.iterator();
1438                     String oidlist = new String();
1439                     while(it.hasNext()) {
1440                             PrefetchPair pp = (PrefetchPair) it.next();
1441                             Integer statusbase = locality.getNodePreTempInfo(lb,fpn).get(pp.base);
1442                             /* Find prefetches that can generate oid */
1443                             if(statusbase == LocalityAnalysis.GLOBAL) {
1444                                     if(locality.getAtomic(lb).get(fpn).intValue()>0) { /* Inside transaction */
1445                                             generateInsideTransCode(fm,lb,output, pp,oids,fieldoffset,endoffset,tuplecount);
1446                                     } else {/* Outside Transaction */
1447                                             generateOutsideTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1448                                     }
1449                                     tuplecount++;
1450                             } else if(statusbase == LocalityAnalysis.LOCAL) {
1451                                     generateLocalTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1452                             } else {
1453                                     continue;
1454                             }
1455                     }
1456
1457                     /*Create C code for numtuples */
1458                     output.println("   int numtuples_" + count + " = " + tuplecount + ";");
1459
1460                     /*Create C code for oid array */
1461                     output.print("   unsigned int oidarray_" + count + "[] = {");
1462                     boolean needcomma=false;
1463                     it = oids.iterator();
1464                     while(it.hasNext()) {
1465                             if (needcomma)
1466                                     output.print(", ");
1467                             output.print(it.next());
1468                             needcomma=true;
1469                     }
1470                     output.println("};");
1471
1472                     /*Create C code for endoffset values */
1473                     output.print("   unsigned short endoffsetarry_" + count +"[] = {");
1474                     needcomma=false;
1475                     it = endoffset.iterator();
1476                     while(it.hasNext()) {
1477                             if (needcomma)
1478                                     output.print(", ");
1479                             output.print(it.next());
1480                             needcomma=true;
1481                     }
1482                     output.println("};");
1483
1484                     /*Create C code for Field Offset Values */
1485                     output.print("   short fieldarry_" + count +"[] = {");
1486                     needcomma=false;
1487                     it = fieldoffset.iterator();
1488                     while(it.hasNext()) {
1489                             if (needcomma)
1490                                     output.print(", ");
1491                             output.print(it.next());
1492                             needcomma=true;
1493                     }
1494                     output.println("};");
1495                     /* make the prefetch call to Runtime */
1496                     output.println("   prefetch((int) numtuples_"+count+ ", oidarray_"+count+ ", endoffsetarry_"+
1497                                     count+", fieldarry_"+count+");");
1498                     count++;
1499             }
1500
1501             /* Free heap memory */
1502             fieldoffset = null;
1503             endoffset = null;
1504             oids = null;
1505     }
1506
1507     public void generateInsideTransCode(FlatMethod fm, LocalityBinding lb,PrintWriter output,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount){
1508             int i,j;
1509             short offsetcount = 0;
1510
1511             Object newdesc = pp.desc.get(0);
1512             if(newdesc instanceof FieldDescriptor) {
1513                     FieldDescriptor fd = (FieldDescriptor)newdesc;
1514                     String oid = new String("(unsigned int) (" +
1515                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1516                                     generateTemp(fm, pp.base, lb) + "->" + ((FieldDescriptor)fd).getSafeSymbol() +
1517                                     " : NULL)");
1518                     oids.add(oid);
1519             } else {
1520                     IndexDescriptor id = (IndexDescriptor)newdesc;
1521                     String tstlbl = new String();
1522                     for(i=0; i<id.tddesc.size(); i++) {
1523                             tstlbl += generateTemp(fm, id.getTempDescAt(i), lb) + "+";
1524                     }
1525                     tstlbl += id.offset.toString();
1526                     output.println("   int flag_" + flagcount + "=  0;");
1527                     output.println("if ("+tstlbl+"< 0 || "+tstlbl+" >= "+
1528                                     generateTemp(fm, pp.base, lb) + "->___length___) {");
1529                     output.println("    flag_" + flagcount+"  = 1;");
1530                     output.println("}");
1531
1532                     output.println("if (flag_"+flagcount+") {");
1533                     output.println("}");
1534
1535                     TypeDescriptor elementtype = pp.base.getType().dereference();
1536                     String type="";
1537                     if (elementtype.isArray()||elementtype.isClass())
1538                             type="void *";
1539                     else
1540                             type=elementtype.getSafeSymbol()+" ";
1541
1542                     String oid = new String("(unsigned int) (" + generateTemp(fm, pp.base, lb) + " != NULL ? " + "((" + type + "*)(((char *) &("+ generateTemp(fm, pp.base, lb)+ "->___length___))+sizeof(int)))["+tstlbl+"] : 0)");
1543                     oids.add(oid);
1544             }
1545
1546             for(i = 1; i < pp.desc.size(); i++) {
1547                     TypeDescriptor newtd;
1548                     ClassDescriptor cd;
1549                     String newfieldoffset;
1550                     Object desc = pp.getDescAt(i);
1551                     offsetcount++;
1552                     if(desc instanceof FieldDescriptor) {
1553                             Object prevdesc = pp.getDescAt(i-1);
1554                             if(prevdesc instanceof IndexDescriptor){
1555                                     if((i-1) == 0) {
1556                                             newtd = pp.base.getType();
1557                                             cd = newtd.getClassDesc();
1558                                     } else {
1559                                             //FIXME currently handles one dimensional arrays
1560                                             newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1561                                             cd = newtd.getClassDesc();
1562                                     }
1563                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ cd.getSafeSymbol() +" *)0)->"+
1564                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1565                             } else {
1566                                     newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1567                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1568                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1569                             }
1570                             fieldoffset.add(newfieldoffset);
1571                     } else {
1572                             String tstlbl = new String();
1573                             for(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1574                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), lb) + "+";
1575                             }
1576                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1577                             newfieldoffset = new String(tstlbl);
1578                             fieldoffset.add(newfieldoffset);
1579                     }
1580             }
1581             if(tuplecount > 0) {
1582                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1583                     short endoffsetval = (short) tmp;
1584                     endoffset.add(endoffsetval);
1585             }else {
1586                     endoffset.add(offsetcount);
1587             }
1588             flagcount++;
1589     }
1590
1591     public void generateOutsideTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp, Vector oids, Vector fieldoffset, Vector endoffset, int tuplecount) {
1592             int i,j;
1593             short offsetcount = 0;
1594
1595             String oid = new String(" (unsigned int) (" + generateTemp(fm, pp.base, lb)+ ")");
1596             oids.add(oid);
1597             for(i = 0; i < pp.desc.size(); i++) {
1598                     TypeDescriptor newtd;
1599                     ClassDescriptor cd;
1600                     String newfieldoffset;
1601                     Object desc = pp.getDescAt(i);
1602                     offsetcount++;
1603                     if(desc instanceof FieldDescriptor) {
1604                             if(i == 0){
1605                                     newtd = pp.base.getType();
1606                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1607                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1608                             } else {
1609                                     Object prevdesc = pp.getDescAt(i-1);
1610                                     if(prevdesc instanceof IndexDescriptor){
1611                                             if((i-1) == 0) {
1612                                                     newtd = pp.base.getType();
1613                                                     cd = newtd.getClassDesc();
1614                                             } else {
1615                                                     //FIXME currently handles one dimensional arrays
1616                                                     newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1617                                                     cd = newtd.getClassDesc();
1618                                             }
1619                                             newfieldoffset = new String("(unsigned int)(&(((struct "+ cd.getSafeSymbol() +" *)0)->"+
1620                                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1621                                     } else {
1622                                             newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1623                                             newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1624                                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1625                                     }
1626                             }
1627                     } else {
1628                             String tstlbl = new String();
1629                             for(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1630                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), lb) + "+";
1631                             }
1632                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1633                             newfieldoffset = new String(tstlbl);
1634                     }
1635                     fieldoffset.add(newfieldoffset);
1636             }
1637             if(tuplecount > 0) {
1638                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1639                     short endoffsetval = (short) tmp;
1640                     endoffset.add(endoffsetval);
1641             }else {
1642                     endoffset.add(offsetcount);
1643             }
1644     }
1645
1646     public void generateLocalTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount) {
1647             int i, j, k;
1648             short offsetcount = 0;
1649
1650             Vector prefix = new Vector();
1651             prefix.add(generateTemp(fm,pp.base,lb));
1652             String tstlbl = new String("(" + prefix.get(0) + " != NULL ");
1653             for (i = 0; i < pp.desc.size(); i++) {
1654                     Object newdesc = pp.desc.get(i);
1655                     if(newdesc instanceof FieldDescriptor) {
1656                             FieldDescriptor fd = (FieldDescriptor) newdesc;
1657                             if(fd.isGlobal()){
1658                                     /* Field descriptor is global */
1659                                     String oid = new String(" (unsigned int) (");
1660                                     tstlbl += ") ? ";
1661                                     for(j = 0; j < prefix.size(); j++) {
1662                                             tstlbl += prefix.get(j) + "->";
1663                                     }
1664                                     tstlbl += fd.getSafeSymbol() + ": NULL";
1665                                     oid += tstlbl+ " )";
1666                                     oids.add(oid);
1667                                     for(j = i+1; j < pp.desc.size(); j++) {
1668                                             TypeDescriptor newtd;
1669                                             String newfieldoffset;
1670                                             Object desc = pp.getDescAt(j);
1671                                             offsetcount++;
1672                                             if(desc instanceof FieldDescriptor) {
1673                                                     Object prevdesc = pp.getDescAt(j-1);
1674                                                     if(prevdesc instanceof IndexDescriptor){
1675                                                             //FIXME currently handles one dimensional arrays
1676                                                             newtd = ((FieldDescriptor)pp.getDescAt(j-2)).getType();
1677                                                     } else {
1678                                                             newtd = ((FieldDescriptor) pp.getDescAt(j-1)).getType();
1679                                                     }
1680                                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1681                                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1682                                             } else {
1683                                                     String indexlbl = new String();
1684                                                     for(k = 0; k < ((IndexDescriptor)desc).tddesc.size(); k++) {
1685                                                             indexlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(k), lb) + "+";
1686                                                     }
1687                                                     indexlbl += ((IndexDescriptor)desc).offset.toString();
1688                                                     newfieldoffset = new String(indexlbl);
1689                                             }
1690                                             fieldoffset.add(newfieldoffset);
1691                                     }
1692                                     if(tuplecount > 0) {
1693                                             int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1694                                             short endoffsetval = (short) tmp;
1695                                             endoffset.add(endoffsetval);
1696                                     }else {
1697                                             endoffset.add(offsetcount);
1698                                     }
1699                                     tuplecount++;
1700                                     break; //break from outer for loop
1701                             } else {
1702                                     tstlbl += "&& ";
1703                                     for(j = 0; j < prefix.size(); j++) {
1704                                             tstlbl += prefix.get(j) + "->";
1705                                     }
1706                                     prefix.add(fd.getSafeSymbol());
1707                                     tstlbl += fd.getSafeSymbol() + " != NULL";
1708                             }
1709                     } else { /* if Index descriptor */
1710                             String indexstring = new String();
1711                             IndexDescriptor id = (IndexDescriptor) newdesc;
1712                             if(i == 0) {
1713                                     indexstring = generateTemp(fm, pp.base, lb);
1714                             } else {
1715                                     indexstring = ((FieldDescriptor)pp.getDescAt(i-1)).getSafeSymbol();
1716                             }
1717                             tstlbl += "&& ";
1718                             for(j = 0; j < prefix.size(); j++) {
1719                                     tstlbl += prefix.get(j) + "[";
1720                             }
1721                             indexstring += "[";
1722                             for(j = 0; j < id.tddesc.size(); j++) {
1723                                     tstlbl += generateTemp(fm, id.getTempDescAt(j), lb) + "+";
1724                                     indexstring += generateTemp(fm,id.getTempDescAt(j), lb) + "+";
1725                             }
1726                             tstlbl += id.offset.toString()+ "]";
1727                             indexstring += id.offset.toString()+ "]";
1728                             prefix. removeElementAt(prefix.size() -1);
1729                             prefix.add(indexstring);
1730                             tstlbl += " != NULL";
1731                     }
1732             }
1733     }
1734
1735     public void generateFlatGlobalConvNode(FlatMethod fm, LocalityBinding lb, FlatGlobalConvNode fgcn, PrintWriter output) {
1736             if (lb!=fgcn.getLocality())
1737                     return;
1738             /* Have to generate flat globalconv */
1739             if (fgcn.getMakePtr()) {
1740                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)transRead(trans, (unsigned int) "+generateTemp(fm, fgcn.getSrc(),lb)+");");
1741             } else {
1742                     /* Need to convert to OID */
1743                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)COMPOID("+generateTemp(fm, fgcn.getSrc(),lb)+");");
1744             }
1745     }
1746
1747     public void generateFlatAtomicEnterNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicEnterNode faen, PrintWriter output) {
1748             /* Check to see if we need to generate code for this atomic */
1749             if (locality.getAtomic(lb).get(faen.getPrev(0)).intValue()>0)
1750                     return;
1751             /* Backup the temps. */
1752             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1753                     TempDescriptor tmp=tmpit.next();
1754                     output.println(generateTemp(fm, backuptable.get(tmp),lb)+"="+generateTemp(fm,tmp,lb)+";");
1755             }
1756             output.println("goto transstart"+faen.getIdentifier()+";");
1757
1758             /******* Print code to retry aborted transaction *******/
1759             output.println("transretry"+faen.getIdentifier()+":");
1760
1761             /* Restore temps */
1762             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1763                     TempDescriptor tmp=tmpit.next();
1764                     output.println(generateTemp(fm, tmp,lb)+"="+generateTemp(fm,backuptable.get(tmp),lb)+";");
1765             }
1766
1767             /********* Need to revert local object store ********/
1768             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1769
1770         output.println("while ("+revertptr+") {");
1771         output.println("struct ___Object___ * tmpptr;");
1772         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1773         output.println("REVERT_OBJ("+revertptr+");");
1774         output.println(revertptr+"=tmpptr;");
1775         output.println("}");
1776
1777         /******* Tell the runtime to start the transaction *******/
1778
1779         output.println("transstart"+faen.getIdentifier()+":");
1780         output.println("trans=transStart();");
1781     }
1782
1783     public void generateFlatAtomicExitNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicExitNode faen, PrintWriter output) {
1784         /* Check to see if we need to generate code for this atomic */
1785         if (locality.getAtomic(lb).get(faen).intValue()>0)
1786             return;
1787         //store the revert list before we lose the transaction object
1788         String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1789         output.println(revertptr+"=trans->revertlist;");
1790         output.println("if (transCommit(trans)) {");
1791         /* Transaction aborts if it returns true */
1792         output.println("goto transretry"+faen.getAtomicEnter().getIdentifier()+";");
1793         output.println("} else {");
1794         /* Need to commit local object store */
1795         output.println("while ("+revertptr+") {");
1796         output.println("struct ___Object___ * tmpptr;");
1797         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1798         output.println("COMMIT_OBJ("+revertptr+");");
1799         output.println(revertptr+"=tmpptr;");
1800         output.println("}");
1801         output.println("}");
1802     }
1803
1804     private void generateFlatCheckNode(FlatMethod fm,  LocalityBinding lb, FlatCheckNode fcn, PrintWriter output) {
1805         if (state.CONSCHECK) {
1806             String specname=fcn.getSpec();
1807             String varname="repairstate___";
1808             output.println("{");
1809             output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1810
1811             TempDescriptor[] temps=fcn.getTemps();
1812             String[] vars=fcn.getVars();
1813             for(int i=0;i<temps.length;i++) {
1814                 output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i],lb)+";");
1815             }
1816
1817             output.println("if (doanalysis"+specname+"("+varname+")) {");
1818             output.println("free"+specname+"_state("+varname+");");
1819             output.println("} else {");
1820             output.println("/* Bad invariant */");
1821             output.println("free"+specname+"_state("+varname+");");
1822             output.println("abort_task();");
1823             output.println("}");
1824             output.println("}");
1825         }
1826     }
1827
1828     private void generateFlatCall(FlatMethod fm, LocalityBinding lb, FlatCall fc, PrintWriter output) {
1829         MethodDescriptor md=fc.getMethod();
1830         ParamsObject objectparams=(ParamsObject)paramstable.get(state.DSM?locality.getBinding(lb, fc):md);
1831         ClassDescriptor cn=md.getClassDesc();
1832         output.println("{");
1833         if (GENERATEPRECISEGC) {
1834             if (state.DSM) {
1835                 LocalityBinding fclb=locality.getBinding(lb, fc);
1836                 output.print("       struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1837             } else
1838                 output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1839
1840             output.print(objectparams.numPointers());
1841             output.print(", & "+localsprefix);
1842             if (fc.getThis()!=null) {
1843                 output.print(", ");
1844                 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis(),lb));
1845             }
1846             for(int i=0;i<fc.numArgs();i++) {
1847                 Descriptor var=md.getParameter(i);
1848                 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1849                 if (objectparams.isParamPtr(paramtemp)) {
1850                     TempDescriptor targ=fc.getArg(i);
1851                     output.print(", ");
1852                     TypeDescriptor td=md.getParamType(i);
1853                     if (td.isTag())
1854                         output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1855                     else
1856                         output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1857                 }
1858             }
1859             output.println("};");
1860         }
1861         output.print("       ");
1862
1863
1864         if (fc.getReturnTemp()!=null)
1865             output.print(generateTemp(fm,fc.getReturnTemp(),lb)+"=");
1866
1867         /* Do we need to do virtual dispatch? */
1868         if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1869             //no
1870             if (state.DSM) {
1871                 LocalityBinding fclb=locality.getBinding(lb, fc);
1872                 output.print(cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1873             } else {
1874                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1875             }
1876         } else {
1877             //yes
1878             output.print("((");
1879             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1880                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1881             else
1882                 output.print(md.getReturnType().getSafeSymbol()+" ");
1883             output.print("(*)(");
1884
1885             boolean printcomma=false;
1886             if (GENERATEPRECISEGC) {
1887                 if (state.DSM) {
1888                     LocalityBinding fclb=locality.getBinding(lb, fc);
1889                     output.print("struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1890                 } else
1891                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1892                 printcomma=true;
1893             }
1894
1895             for(int i=0;i<objectparams.numPrimitives();i++) {
1896                 TempDescriptor temp=objectparams.getPrimitive(i);
1897                 if (printcomma)
1898                     output.print(", ");
1899                 printcomma=true;
1900                 if (temp.getType().isClass()||temp.getType().isArray())
1901                     output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1902                 else
1903                     output.print(temp.getType().getSafeSymbol());
1904             }
1905
1906             if (state.DSM) {
1907                 LocalityBinding fclb=locality.getBinding(lb, fc);
1908                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getLocalityNumber(fclb)+"])");
1909             } else
1910                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1911         }
1912
1913         output.print("(");
1914         boolean needcomma=false;
1915         if (GENERATEPRECISEGC) {
1916             output.print("&__parameterlist__");
1917             needcomma=true;
1918         }
1919
1920         if (state.DSM&&locality.getBinding(lb,fc).isAtomic()) {
1921             if (needcomma)
1922                 output.print(",");
1923             output.print("trans");
1924             needcomma=true;
1925         }
1926
1927         if (!GENERATEPRECISEGC) {
1928             if (fc.getThis()!=null) {
1929                 TypeDescriptor ptd=md.getThis().getType();
1930                 if (needcomma)
1931                     output.print(",");
1932                 if (ptd.isClass()&&!ptd.isArray())
1933                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1934                 output.print(generateTemp(fm,fc.getThis(),lb));
1935                 needcomma=true;
1936             }
1937         }
1938
1939         for(int i=0;i<fc.numArgs();i++) {
1940             Descriptor var=md.getParameter(i);
1941             TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1942             if (objectparams.isParamPrim(paramtemp)) {
1943                 TempDescriptor targ=fc.getArg(i);
1944                 if (needcomma)
1945                     output.print(", ");
1946
1947                 TypeDescriptor ptd=md.getParamType(i);
1948                 if (ptd.isClass()&&!ptd.isArray())
1949                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1950                 output.print(generateTemp(fm, targ,lb));
1951                 needcomma=true;
1952             }
1953         }
1954         output.println(");");
1955         output.println("   }");
1956     }
1957
1958     private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1959         Set subclasses=typeutil.getSubClasses(thiscd);
1960         if (subclasses==null)
1961             return true;
1962         for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1963             ClassDescriptor cd=(ClassDescriptor)classit.next();
1964             Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1965             for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1966                 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1967                 if (md.matches(matchmd))
1968                     return false;
1969             }
1970         }
1971         return true;
1972     }
1973
1974     private void generateFlatFieldNode(FlatMethod fm, LocalityBinding lb, FlatFieldNode ffn, PrintWriter output) {
1975         if (state.DSM) {
1976             Integer status=locality.getNodePreTempInfo(lb,ffn).get(ffn.getSrc());
1977             if (status==LocalityAnalysis.GLOBAL) {
1978                 String field=ffn.getField().getSafeSymbol();
1979                 String src=generateTemp(fm, ffn.getSrc(),lb);
1980                 String dst=generateTemp(fm, ffn.getDst(),lb);
1981
1982                 if (ffn.getField().getType().isPtr()) {
1983
1984                     //TODO: Uncomment this when we have runtime support
1985                     //if (ffn.getSrc()==ffn.getDst()) {
1986                     //output.println("{");
1987                     //output.println("void * temp="+src+";");
1988                     //output.println("if (temp&0x1) {");
1989                     //output.println("temp=(void *) transRead(trans, (unsigned int) temp);");
1990                     //output.println(src+"->"+field+"="+temp+";");
1991                     //output.println("}");
1992                     //output.println(dst+"=temp;");
1993                     //output.println("}");
1994                     //} else {
1995                     output.println(dst+"="+ src +"->"+field+ ";");
1996                     //output.println("if ("+dst+"&0x1) {");
1997                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
1998                     //output.println(src+"->"+field+"="+src+"->"+field+";");
1999                     //output.println("}");
2000                     //}
2001                 } else {
2002                     output.println(dst+"="+ src+"->"+field+";");
2003                 }
2004             } else if (status==LocalityAnalysis.LOCAL) {
2005                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2006             } else if (status==LocalityAnalysis.EITHER) {
2007                 //Code is reading from a null pointer
2008                 output.println("if ("+generateTemp(fm, ffn.getSrc(),lb)+") {");
2009                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2010                 //This should throw a suitable null pointer error
2011                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2012             } else
2013                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2014         } else
2015             output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2016     }
2017
2018
2019     private void generateFlatSetFieldNode(FlatMethod fm, LocalityBinding lb, FlatSetFieldNode fsfn, PrintWriter output) {
2020         if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
2021             throw new Error("Can't set array length");
2022         if (state.DSM && locality.getAtomic(lb).get(fsfn).intValue()>0) {
2023             Integer statussrc=locality.getNodePreTempInfo(lb,fsfn).get(fsfn.getSrc());
2024             Integer statusdst=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
2025             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2026
2027             String src=generateTemp(fm,fsfn.getSrc(),lb);
2028             String dst=generateTemp(fm,fsfn.getDst(),lb);
2029             if (srcglobal) {
2030                 output.println("{");
2031                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2032             }
2033             if (statusdst.equals(LocalityAnalysis.GLOBAL)) {
2034                 String glbdst=dst;
2035                 //mark it dirty
2036                 output.println("*((unsigned int *)&("+dst+"->___localcopy___))|=DIRTY;");
2037                 if (srcglobal) {
2038                     output.println("*((unsigned int *)&("+glbdst+"->"+ fsfn.getField().getSafeSymbol()+"))=srcoid;");
2039                 } else
2040                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2041             } else if (statusdst.equals(LocalityAnalysis.LOCAL)) {
2042                 /** Check if we need to copy */
2043                 output.println("if(!"+dst+"->"+localcopystr+") {");
2044                 /* Link object into list */
2045                 output.println(dst+"->"+nextobjstr+"=trans->revertlist;");
2046                 output.println("trans->revertlist=(struct ___Object___ *)"+dst+";");
2047                 if (GENERATEPRECISEGC)
2048                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
2049                 else
2050                     output.println("COPY_OBJ("+dst+");");
2051                 output.println("}");
2052                 if (srcglobal)
2053                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2054                 else
2055                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2056             } else if (statusdst.equals(LocalityAnalysis.EITHER)) {
2057                 //writing to a null...bad
2058                 output.println("if ("+dst+") {");
2059                 output.println("printf(\"BIG ERROR 2\\n\");exit(-1);}");
2060                 if (srcglobal)
2061                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2062                 else
2063                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2064             }
2065             if (srcglobal) {
2066                 output.println("}");
2067             }
2068         } else {
2069             output.println(generateTemp(fm, fsfn.getDst(),lb)+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc(),lb)+";");
2070         }
2071     }
2072
2073     private void generateFlatElementNode(FlatMethod fm, LocalityBinding lb, FlatElementNode fen, PrintWriter output) {
2074         TypeDescriptor elementtype=fen.getSrc().getType().dereference();
2075         String type="";
2076
2077         if (elementtype.isArray()||elementtype.isClass())
2078             type="void *";
2079         else
2080             type=elementtype.getSafeSymbol()+" ";
2081
2082         if (fen.needsBoundsCheck()) {
2083             output.println("if ("+generateTemp(fm, fen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fen.getIndex(),lb)+" >= "+generateTemp(fm,fen.getSrc(),lb) + "->___length___)");
2084             output.println("failedboundschk();");
2085         }
2086         if (state.DSM) {
2087             Integer status=locality.getNodePreTempInfo(lb,fen).get(fen.getSrc());
2088             if (status==LocalityAnalysis.GLOBAL) {
2089                 String dst=generateTemp(fm, fen.getDst(),lb);
2090
2091                 if (elementtype.isPtr()) {
2092                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2093                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
2094                 } else {
2095                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2096                 }
2097             } else if (status==LocalityAnalysis.LOCAL) {
2098                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2099             } else if (status==LocalityAnalysis.EITHER) {
2100                 //Code is reading from a null pointer
2101                 output.println("if ("+generateTemp(fm, fen.getSrc(),lb)+") {");
2102                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2103                 //This should throw a suitable null pointer error
2104                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2105             } else
2106                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2107         } else {
2108             output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2109         }
2110     }
2111
2112     private void generateFlatSetElementNode(FlatMethod fm, LocalityBinding lb, FlatSetElementNode fsen, PrintWriter output) {
2113         //TODO: need dynamic check to make sure this assignment is actually legal
2114         //Because Object[] could actually be something more specific...ie. Integer[]
2115
2116         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
2117         String type="";
2118
2119         if (elementtype.isArray()||elementtype.isClass())
2120             type="void *";
2121         else
2122             type=elementtype.getSafeSymbol()+" ";
2123
2124
2125         if (fsen.needsBoundsCheck()) {
2126             output.println("if ("+generateTemp(fm, fsen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fsen.getIndex(),lb)+" >= "+generateTemp(fm,fsen.getDst(),lb) + "->___length___)");
2127             output.println("failedboundschk();");
2128         }
2129
2130         if (state.DSM && locality.getAtomic(lb).get(fsen).intValue()>0) {
2131             Integer statussrc=locality.getNodePreTempInfo(lb,fsen).get(fsen.getSrc());
2132             Integer statusdst=locality.getNodePreTempInfo(lb,fsen).get(fsen.getDst());
2133             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2134             boolean dstglobal=statusdst==LocalityAnalysis.GLOBAL;
2135             if (dstglobal) {
2136                 output.println("*((unsigned int *)&("+generateTemp(fm,fsen.getDst(),lb)+"->___localcopy___))|=DIRTY;");
2137             }
2138             if (srcglobal) {
2139                 output.println("{");
2140                 String src=generateTemp(fm, fsen.getSrc(), lb);
2141                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2142                 output.println("((int*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]=srcoid;");
2143                 output.println("}");
2144             } else {
2145                 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2146             }
2147         } else
2148             output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2149     }
2150
2151     private void generateFlatNew(FlatMethod fm, LocalityBinding lb, FlatNew fn, PrintWriter output) {
2152         if (fn.getType().isArray()) {
2153             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
2154             if (fn.isGlobal()) {
2155                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarrayglobal(trans, "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2156             } else if (GENERATEPRECISEGC) {
2157                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2158             } else {
2159                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2160             }
2161         } else {
2162             if (fn.isGlobal()) {
2163                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newglobal(trans, "+fn.getType().getClassDesc().getId()+");");
2164             } else if (GENERATEPRECISEGC) {
2165                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
2166             } else {
2167                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
2168             }
2169         }
2170     }
2171
2172     private void generateFlatTagDeclaration(FlatMethod fm, LocalityBinding lb, FlatTagDeclaration fn, PrintWriter output) {
2173         if (GENERATEPRECISEGC) {
2174             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
2175         } else {
2176             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag("+state.getTagId(fn.getType())+");");
2177         }
2178     }
2179
2180     private void generateFlatOpNode(FlatMethod fm, LocalityBinding lb, FlatOpNode fon, PrintWriter output) {
2181         if (fon.getRight()!=null) {
2182             if (fon.getOp().getOp()==Operation.URIGHTSHIFT) {
2183                 if (fon.getLeft().getType().isLong())
2184                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned long long)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2185                 else
2186                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned int)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2187
2188             } else
2189                 output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+fon.getOp().toString()+generateTemp(fm,fon.getRight(),lb)+";");
2190         } else if (fon.getOp().getOp()==Operation.ASSIGN)
2191             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2192         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
2193             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2194         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
2195             output.println(generateTemp(fm, fon.getDest(),lb)+" = -"+generateTemp(fm, fon.getLeft(),lb)+";");
2196         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
2197             output.println(generateTemp(fm, fon.getDest(),lb)+" = !"+generateTemp(fm, fon.getLeft(),lb)+";");
2198         else if (fon.getOp().getOp()==Operation.COMP)
2199             output.println(generateTemp(fm, fon.getDest(),lb)+" = ~"+generateTemp(fm, fon.getLeft(),lb)+";");
2200         else if (fon.getOp().getOp()==Operation.ISAVAILABLE) {
2201             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+"->fses==NULL;");
2202         } else
2203             output.println(generateTemp(fm, fon.getDest(),lb)+fon.getOp().toString()+generateTemp(fm, fon.getLeft(),lb)+";");
2204     }
2205
2206     private void generateFlatCastNode(FlatMethod fm, LocalityBinding lb, FlatCastNode fcn, PrintWriter output) {
2207         /* TODO: Do type check here */
2208         if (fcn.getType().isArray()) {
2209             throw new Error();
2210         } else if (fcn.getType().isClass())
2211             output.println(generateTemp(fm,fcn.getDst(),lb)+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc(),lb)+";");
2212         else
2213             output.println(generateTemp(fm,fcn.getDst(),lb)+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc(),lb)+";");
2214     }
2215
2216     private void generateFlatLiteralNode(FlatMethod fm, LocalityBinding lb, FlatLiteralNode fln, PrintWriter output) {
2217         if (fln.getValue()==null)
2218             output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2219         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
2220             if (GENERATEPRECISEGC) {
2221                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2222             } else {
2223                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2224             }
2225         } else if (fln.getType().isBoolean()) {
2226             if (((Boolean)fln.getValue()).booleanValue())
2227                 output.println(generateTemp(fm, fln.getDst(),lb)+"=1;");
2228             else
2229                 output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2230         } else if (fln.getType().isChar()) {
2231             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
2232             output.println(generateTemp(fm, fln.getDst(),lb)+"='"+st+"';");
2233         } else if (fln.getType().isLong()) {
2234             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+"LL;");
2235         } else
2236             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+";");
2237     }
2238
2239     private void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
2240         if (frn.getReturnTemp()!=null) {
2241             if (frn.getReturnTemp().getType().isPtr())
2242                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2243             else
2244                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2245         } else
2246             output.println("return;");
2247     }
2248
2249     private void generateFlatCondBranch(FlatMethod fm, LocalityBinding lb, FlatCondBranch fcb, String label, PrintWriter output) {
2250         output.println("if (!"+generateTemp(fm, fcb.getTest(),lb)+") goto "+label+";");
2251     }
2252
2253     /** This method generates header information for the method or
2254      * task referenced by the Descriptor des. */
2255
2256     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
2257         /* Print header */
2258         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
2259         MethodDescriptor md=null;
2260         TaskDescriptor task=null;
2261         if (des instanceof MethodDescriptor)
2262             md=(MethodDescriptor) des;
2263         else
2264             task=(TaskDescriptor) des;
2265
2266         ClassDescriptor cn=md!=null?md.getClassDesc():null;
2267
2268         if (md!=null&&md.getReturnType()!=null) {
2269             if (md.getReturnType().isClass()||md.getReturnType().isArray())
2270                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
2271             else
2272                 output.print(md.getReturnType().getSafeSymbol()+" ");
2273         } else
2274             //catch the constructor case
2275             output.print("void ");
2276         if (md!=null) {
2277             if (state.DSM) {
2278                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2279             } else
2280                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2281         } else
2282             output.print(task.getSafeSymbol()+"(");
2283
2284         boolean printcomma=false;
2285         if (GENERATEPRECISEGC) {
2286             if (md!=null) {
2287                 if (state.DSM) {
2288                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2289                 } else
2290                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2291             } else
2292                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
2293             printcomma=true;
2294         }
2295
2296         if (state.DSM&&lb.isAtomic()) {
2297             if (printcomma)
2298                 output.print(", ");
2299             output.print("transrecord_t * trans");
2300             printcomma=true;
2301         }
2302
2303         if (md!=null) {
2304             /* Method */
2305             for(int i=0;i<objectparams.numPrimitives();i++) {
2306                 TempDescriptor temp=objectparams.getPrimitive(i);
2307                 if (printcomma)
2308                     output.print(", ");
2309                 printcomma=true;
2310                 if (temp.getType().isClass()||temp.getType().isArray())
2311                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
2312                 else
2313                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
2314             }
2315             output.println(") {");
2316         } else if (!GENERATEPRECISEGC) {
2317             /* Imprecise Task */
2318             output.println("void * parameterarray[]) {");
2319             /* Unpack variables */
2320             for(int i=0;i<objectparams.numPrimitives();i++) {
2321                 TempDescriptor temp=objectparams.getPrimitive(i);
2322                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
2323             }
2324             for(int i=0;i<fm.numTags();i++) {
2325                 TempDescriptor temp=fm.getTag(i);
2326                 int offset=i+objectparams.numPrimitives();
2327                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
2328             }
2329
2330             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
2331                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
2332         } else output.println(") {");
2333     }
2334
2335     public void generateFlatFlagActionNode(FlatMethod fm, LocalityBinding lb, FlatFlagActionNode ffan, PrintWriter output) {
2336         output.println("/* FlatFlagActionNode */");
2337
2338
2339         /* Process tag changes */
2340         Relation tagsettable=new Relation();
2341         Relation tagcleartable=new Relation();
2342
2343         Iterator tagsit=ffan.getTempTagPairs();
2344         while (tagsit.hasNext()) {
2345             TempTagPair ttp=(TempTagPair) tagsit.next();
2346             TempDescriptor objtmp=ttp.getTemp();
2347             TagDescriptor tag=ttp.getTag();
2348             TempDescriptor tagtmp=ttp.getTagTemp();
2349             boolean tagstatus=ffan.getTagChange(ttp);
2350             if (tagstatus) {
2351                 tagsettable.put(objtmp, tagtmp);
2352             } else {
2353                 tagcleartable.put(objtmp, tagtmp);
2354             }
2355         }
2356
2357
2358         Hashtable flagandtable=new Hashtable();
2359         Hashtable flagortable=new Hashtable();
2360
2361         /* Process flag changes */
2362         Iterator flagsit=ffan.getTempFlagPairs();
2363         while(flagsit.hasNext()) {
2364             TempFlagPair tfp=(TempFlagPair)flagsit.next();
2365             TempDescriptor temp=tfp.getTemp();
2366             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
2367             FlagDescriptor flag=tfp.getFlag();
2368             if (flag==null) {
2369                 //Newly allocate objects that don't set any flags case
2370                 if (flagortable.containsKey(temp)) {
2371                     throw new Error();
2372                 }
2373                 int mask=0;
2374                 flagortable.put(temp,new Integer(mask));
2375             } else {
2376                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
2377                 boolean flagstatus=ffan.getFlagChange(tfp);
2378                 if (flagstatus) {
2379                     int mask=0;
2380                     if (flagortable.containsKey(temp)) {
2381                         mask=((Integer)flagortable.get(temp)).intValue();
2382                     }
2383                     mask|=flagid;
2384                     flagortable.put(temp,new Integer(mask));
2385                 } else {
2386                     int mask=0xFFFFFFFF;
2387                     if (flagandtable.containsKey(temp)) {
2388                         mask=((Integer)flagandtable.get(temp)).intValue();
2389                     }
2390                     mask&=(0xFFFFFFFF^flagid);
2391                     flagandtable.put(temp,new Integer(mask));
2392                 }
2393             }
2394         }
2395
2396
2397         HashSet flagtagset=new HashSet();
2398         flagtagset.addAll(flagortable.keySet());
2399         flagtagset.addAll(flagandtable.keySet());
2400         flagtagset.addAll(tagsettable.keySet());
2401         flagtagset.addAll(tagcleartable.keySet());
2402
2403         Iterator ftit=flagtagset.iterator();
2404         while(ftit.hasNext()) {
2405             TempDescriptor temp=(TempDescriptor)ftit.next();
2406
2407
2408             Set tagtmps=tagcleartable.get(temp);
2409             if (tagtmps!=null) {
2410                 Iterator tagit=tagtmps.iterator();
2411                 while(tagit.hasNext()) {
2412                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2413                     if (GENERATEPRECISEGC)
2414                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2415                     else
2416                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2417                 }
2418             }
2419
2420             tagtmps=tagsettable.get(temp);
2421             if (tagtmps!=null) {
2422                 Iterator tagit=tagtmps.iterator();
2423                 while(tagit.hasNext()) {
2424                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2425                     if (GENERATEPRECISEGC)
2426                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2427                     else
2428                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp, lb)+", "+generateTemp(fm,tagtmp, lb)+");");
2429                 }
2430             }
2431
2432             int ormask=0;
2433             int andmask=0xFFFFFFF;
2434
2435             if (flagortable.containsKey(temp))
2436                 ormask=((Integer)flagortable.get(temp)).intValue();
2437             if (flagandtable.containsKey(temp))
2438                 andmask=((Integer)flagandtable.get(temp)).intValue();
2439             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2440                 output.println("flagorandinit("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2441             } else {
2442                 output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2443             }
2444         }
2445     }
2446
2447     void generateOptionalHeader(PrintWriter headers) {
2448
2449          //GENERATE HEADERS
2450          headers.println("#include \"task.h\"\n\n");
2451          headers.println("#ifndef _OPTIONAL_STRUCT_");
2452          headers.println("#define _OPTIONAL_STRUCT_");
2453
2454          //STRUCT PREDICATEMEMBER
2455          headers.println("struct predicatemember{");
2456          headers.println("int type;");
2457          headers.println("int numdnfterms;");
2458          headers.println("int * flags;");
2459          headers.println("int numtags;");
2460          headers.println("int * tags;\n};\n\n");
2461
2462          //STRUCT OPTIONALTASKDESCRIPTOR
2463          headers.println("struct optionaltaskdescriptor{");
2464          headers.println("struct taskdescriptor * task;");
2465          headers.println("int index;");
2466          headers.println("int numenterflags;");
2467          headers.println("int * enterflags;");
2468          headers.println("int numpredicatemembers;");
2469          headers.println("struct predicatemember ** predicatememberarray;");
2470          headers.println("};\n\n");
2471
2472          //STRUCT TASKFAILURE
2473          headers.println("struct taskfailure {");
2474          headers.println("struct taskdescriptor * task;");
2475          headers.println("int index;");
2476          headers.println("int numoptionaltaskdescriptors;");
2477          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2478
2479          //STRUCT FSANALYSISWRAPPER
2480          headers.println("struct fsanalysiswrapper{");
2481          headers.println("int  flags;");
2482          headers.println("int numtags;");
2483          headers.println("int * tags;");
2484          headers.println("int numtaskfailures;");
2485          headers.println("struct taskfailure ** taskfailurearray;");
2486          headers.println("int numoptionaltaskdescriptors;");
2487          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2488
2489          //STRUCT CLASSANALYSISWRAPPER
2490          headers.println("struct classanalysiswrapper{");
2491          headers.println("int type;");
2492          headers.println("int numotd;");
2493          headers.println("struct optionaltaskdescriptor ** otdarray;");
2494          headers.println("int numfsanalysiswrappers;");
2495          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};");
2496
2497          headers.println("extern struct classanalysiswrapper * classanalysiswrapperarray[];");
2498
2499          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2500          while(taskit.hasNext()) {
2501              TaskDescriptor td=(TaskDescriptor)taskit.next();
2502              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2503          }
2504
2505     }
2506
2507     //CHECK OVER THIS -- THERE COULD BE SOME ERRORS HERE
2508     int generateOptionalPredicate(Predicate predicate, OptionalTaskDescriptor otd, ClassDescriptor cdtemp, PrintWriter output) {
2509         int predicateindex = 0;
2510         //iterate through the classes concerned by the predicate
2511         Set c_vard = predicate.vardescriptors;
2512         Hashtable<TempDescriptor, Integer> slotnumber=new Hashtable<TempDescriptor, Integer>();
2513         int current_slot=0;
2514
2515         for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2516             VarDescriptor vard = (VarDescriptor)vard_it.next();
2517             TypeDescriptor typed = vard.getType();
2518
2519             //generate for flags
2520             HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2521             output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2522             int numberterms=0;
2523             if (fen_hashset!=null){
2524                 for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2525                     FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2526                     if (fen!=null) {
2527                         DNFFlag dflag=fen.getDNF();
2528                         numberterms+=dflag.size();
2529
2530                         Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2531
2532                         for(int j=0;j<dflag.size();j++) {
2533                             if (j!=0)
2534                                 output.println(",");
2535                             Vector term=dflag.get(j);
2536                             int andmask=0;
2537                             int checkmask=0;
2538                             for(int k=0;k<term.size();k++) {
2539                                 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2540                                 FlagDescriptor fd=dfa.getFlag();
2541                                 boolean negated=dfa.getNegated();
2542                                 int flagid=1<<((Integer)flags.get(fd)).intValue();
2543                                 andmask|=flagid;
2544                                 if (!negated)
2545                                     checkmask|=flagid;
2546                             }
2547                             output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2548                         }
2549                     }
2550                 }
2551             }
2552             output.println("};\n");
2553
2554             //generate for tags
2555             TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2556             output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2557             int numtags = 0;
2558             if (tagel!=null){
2559                 for(int j=0;j<tagel.numTags();j++) {
2560                     if (j!=0)
2561                         output.println(",");
2562                     TempDescriptor tmp=tagel.getTemp(j);
2563                     if (!slotnumber.containsKey(tmp)) {
2564                         Integer slotint=new Integer(current_slot++);
2565                         slotnumber.put(tmp,slotint);
2566                     }
2567                     int slot=slotnumber.get(tmp).intValue();
2568                     output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
2569                 }
2570                 numtags = tagel.numTags();
2571             }
2572             output.println("};");
2573
2574             //store the result into a predicatemember struct
2575             output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2576             output.println("/*type*/"+typed.getClassDesc().getId()+",");
2577             output.println("/* number of dnf terms */"+numberterms+",");
2578             output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2579             output.println("/* number of tag */"+numtags+",");
2580             output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2581             output.println("};\n");
2582             predicateindex++;
2583         }
2584
2585
2586         //generate an array that stores the entire predicate
2587         output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2588         for( int j = 0; j<predicateindex; j++){
2589             if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2590             else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2591         }
2592         output.println("};\n");
2593         return predicateindex;
2594     }
2595
2596
2597      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, Set<OptionalTaskDescriptor>>> safeexecution, Hashtable optionaltaskdescriptors) {
2598          generateOptionalHeader(headers);
2599          //GENERATE STRUCTS
2600          output.println("#include \"optionalstruct.h\"\n\n");
2601          output.println("#include \"stdlib.h\"\n");
2602
2603          HashSet processedcd = new HashSet();
2604          int maxotd=0;
2605          Enumeration e = safeexecution.keys();
2606          while (e.hasMoreElements()) {
2607              int numotd=0;
2608              //get the class
2609              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2610              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2611
2612              //Generate the struct of optionals
2613              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2614              numotd = c_otd.size();
2615              if(maxotd<numotd) maxotd = numotd;
2616              if( !c_otd.isEmpty() ){
2617                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2618                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2619
2620                      //generate the int arrays for the predicate
2621                      Predicate predicate = otd.predicate;
2622                      int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
2623                      TreeSet<Integer> fsset=new TreeSet<Integer>();
2624                      //iterate through possible FSes corresponding to
2625                      //the state when entering
2626
2627                      for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext();){
2628                          FlagState fs = (FlagState)fses.next();
2629                          int flagid=0;
2630                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2631                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2632                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2633                              flagid|=id;
2634                          }
2635                          fsset.add(new Integer(flagid));
2636                          //tag information not needed because tag
2637                          //changes are not tolerated.
2638                      }
2639
2640                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2641                      boolean needcomma=false;
2642                      for(Iterator<Integer> it=fsset.iterator();it.hasNext();) {
2643                          if(needcomma)
2644                              output.print(", ");
2645                          output.println(it.next());
2646                      }
2647
2648                      output.println("};\n");
2649
2650
2651                      //generate optionaltaskdescriptor that actually
2652                      //includes exit fses, predicate and the task
2653                      //concerned
2654                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2655                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2656                      output.println("/*index*/"+otd.getIndex()+",");
2657                      output.println("/*number of enter flags*/"+fsset.size()+",");
2658                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2659                      output.println("/*number of members */"+predicateindex+",");
2660                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2661                      output.println("};\n");
2662                  }
2663              } else
2664                  continue;
2665              // if there are no optionals, there is no need to build the rest of the struct
2666
2667              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2668              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2669              if( !c_otd.isEmpty() ){
2670                  boolean needcomma=false;
2671                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2672                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2673                      if(needcomma)
2674                          output.println(",");
2675                      needcomma=true;
2676                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2677                  }
2678              }
2679              output.println("};\n");
2680
2681              //get all the possible flagstates reachable by an object
2682              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2683              int fscounter = 0;
2684              TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
2685              fsts.addAll(hashtbtemp.keySet());
2686              for(Iterator fsit=fsts.iterator();fsit.hasNext();) {
2687                  FlagState fs = (FlagState)fsit.next();
2688                  fscounter++;
2689
2690                  //get the set of OptionalTaskDescriptors corresponding
2691                  HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
2692                  //iterate through the OptionalTaskDescriptors and
2693                  //store the pointers to the optionals struct (see on
2694                  //top) into an array
2695
2696                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2697                  for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext();){
2698                      OptionalTaskDescriptor mm = mos.next();
2699                      if(!mos.hasNext())
2700                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2701                      else
2702                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2703                  }
2704
2705                  output.println("};\n");
2706
2707                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2708
2709                  int flagid=0;
2710                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2711                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2712                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2713                      flagid|=id;
2714                  }
2715
2716                  //process tag information
2717
2718                  int tagcounter = 0;
2719                  boolean first = true;
2720                  Enumeration tag_enum = fs.getTags();
2721                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2722                  while(tag_enum.hasMoreElements()){
2723                      tagcounter++;
2724                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2725                      if(first==true)
2726                          first = false;
2727                      else
2728                          output.println(", ");
2729                      output.println("/*tagid*/"+state.getTagId(tagd));
2730                  }
2731                  output.println("};");
2732
2733                  Set<TaskIndex> tiset=sa.getTaskIndex(fs);
2734                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2735                      TaskIndex ti=itti.next();
2736                      if (ti.isRuntime())
2737                          continue;
2738
2739                      Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
2740
2741                      output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
2742                      boolean needcomma=false;
2743                      for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator();otdit.hasNext();) {
2744                          OptionalTaskDescriptor otd=otdit.next();
2745                          if(needcomma)
2746                              output.print(", ");
2747                          needcomma=true;
2748                          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2749                      }
2750                      output.println("};");
2751
2752                      output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
2753                      output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
2754                      output.print(ti.getIndex()+", ");
2755                      output.print(otdset.size()+", ");
2756                      output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
2757                      output.println("};");
2758                  }
2759
2760                  tiset=sa.getTaskIndex(fs);
2761                  boolean needcomma=false;
2762                  int runtimeti=0;
2763                  output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2764                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2765                      TaskIndex ti=itti.next();
2766                      if (ti.isRuntime()) {
2767                          runtimeti++;
2768                          continue;
2769                      }
2770                      if (needcomma)
2771                          output.print(", ");
2772                      needcomma=true;
2773                      output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
2774                  }
2775                  output.println("};\n");
2776
2777                  //Store the result in fsanalysiswrapper
2778
2779                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2780                  output.println("/*flag*/"+flagid+",");
2781                  output.println("/* number of tags*/"+tagcounter+",");
2782                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2783                  output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
2784                  output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2785                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2786                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2787                  output.println("};\n");
2788
2789              }
2790
2791              //Build the array of fsanalysiswrappers
2792              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2793              boolean needcomma=false;
2794              for(int i = 0; i<fscounter; i++){
2795                  if (needcomma) output.print(",");
2796                  output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
2797                  needcomma=true;
2798              }
2799              output.println("};");
2800
2801              //Build the classanalysiswrapper referring to the previous array
2802              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2803              output.println("/*type*/"+cdtemp.getId()+",");
2804              output.println("/*numotd*/"+numotd+",");
2805              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2806              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2807              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2808              processedcd.add(cdtemp);
2809          }
2810
2811          //build an array containing every classes for which code has been build
2812          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2813          for(int i=0;i<state.numClasses();i++) {
2814              ClassDescriptor cn=cdarray[i];
2815              if (i>0)
2816                  output.print(", ");
2817              if (processedcd.contains(cn))
2818                  output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
2819              else
2820                  output.print("NULL");
2821          }
2822          output.println("};");
2823
2824          output.println("#define MAXOTD "+maxotd);
2825          headers.println("#endif");
2826      }
2827
2828     public List<OptionalTaskDescriptor> ordertd(Set<OptionalTaskDescriptor> otdset) {
2829         Relation r=new Relation();
2830         for(Iterator<OptionalTaskDescriptor>otdit=otdset.iterator();otdit.hasNext();) {
2831             OptionalTaskDescriptor otd=otdit.next();
2832             TaskIndex ti=new TaskIndex(otd.td, otd.getIndex());
2833             r.put(ti, otd);
2834         }
2835
2836         LinkedList<OptionalTaskDescriptor> l=new LinkedList<OptionalTaskDescriptor>();
2837         for(Iterator it=r.keySet().iterator();it.hasNext();) {
2838             Set s=r.get(it.next());
2839             for(Iterator it2=s.iterator();it2.hasNext();) {
2840                 OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
2841                 l.add(otd);
2842             }
2843         }
2844
2845         return l;
2846     }
2847 }
2848
2849
2850
2851
2852
2853