Robust/src/IR/Flat/BuildCode.java

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