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