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