Robust/src/IR/Flat/BuildCode.java

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