Robust/src/IR/Flat/BuildCode.java

   1 package IR.Flat;
   2 import IR.Tree.FlagExpressionNode;
   3 import IR.Tree.DNFFlag;
   4 import IR.Tree.DNFFlagAtom;
   5 import IR.Tree.TagExpressionList;
   6 import IR.*;
   7 import java.util.*;
   8 import java.io.*;
   9 import Util.Relation;
  10 import Analysis.TaskStateAnalysis.FlagState;
  11 import Analysis.TaskStateAnalysis.FlagComparator;
  12 import Analysis.TaskStateAnalysis.OptionalTaskDescriptor;
  13 import Analysis.TaskStateAnalysis.Predicate;
  14 import Analysis.TaskStateAnalysis.SafetyAnalysis;
  15 import Analysis.TaskStateAnalysis.TaskIndex;
  16 import Analysis.Locality.LocalityAnalysis;
  17 import Analysis.Locality.LocalityBinding;
  18 import Analysis.Prefetch.*;
  19
  20 public class BuildCode {
  21     State state;
  22     Hashtable temptovar;
  23     Hashtable paramstable;
  24     Hashtable tempstable;
  25     Hashtable fieldorder;
  26     Hashtable flagorder;
  27     int tag=0;
  28     String localsprefix="___locals___";
  29     String paramsprefix="___params___";
  30     String oidstr="___nextobject___";
  31     String nextobjstr="___nextobject___";
  32     String localcopystr="___localcopy___";
  33     public static boolean GENERATEPRECISEGC=false;
  34     public static String PREFIX="";
  35     public static String arraytype="ArrayObject";
  36     public static int count = 0;
  37     public static int flagcount = 0;
  38     Virtual virtualcalls;
  39     TypeUtil typeutil;
  40     private int maxtaskparams=0;
  41     private int maxcount=0;
  42     ClassDescriptor[] cdarray;
  43     TypeDescriptor[] arraytable;
  44     LocalityAnalysis locality;
  45     Hashtable<TempDescriptor, TempDescriptor> backuptable;
  46     Hashtable<LocalityBinding, TempDescriptor> reverttable;
  47     SafetyAnalysis sa;
  48
  49     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, SafetyAnalysis sa) {
  50         this(st, temptovar, typeutil, null, sa);
  51     }
  52
  53     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, LocalityAnalysis locality) {
  54         this(st, temptovar, typeutil, locality, null);
  55     }
  56
  57     public BuildCode(State st, Hashtable temptovar, TypeUtil typeutil, LocalityAnalysis locality, SafetyAnalysis sa) {
  58         this.sa=sa;
  59         state=st;
  60         this.temptovar=temptovar;
  61         paramstable=new Hashtable();
  62         tempstable=new Hashtable();
  63         fieldorder=new Hashtable();
  64         flagorder=new Hashtable();
  65         this.typeutil=typeutil;
  66         virtualcalls=new Virtual(state,locality);
  67         if (locality!=null) {
  68             this.locality=locality;
  69             this.backuptable=new Hashtable<TempDescriptor, TempDescriptor>();
  70             this.reverttable=new Hashtable<LocalityBinding, TempDescriptor>();
  71         }
  72     }
  73
  74     /** The buildCode method outputs C code for all the methods.  The Flat
  75      * versions of the methods must already be generated and stored in
  76      * the State object. */
  77
  78     public void buildCode() {
  79         /* Create output streams to write to */
  80         PrintWriter outclassdefs=null;
  81         PrintWriter outstructs=null;
  82         PrintWriter outrepairstructs=null;
  83         PrintWriter outmethodheader=null;
  84         PrintWriter outmethod=null;
  85         PrintWriter outvirtual=null;
  86         PrintWriter outtask=null;
  87         PrintWriter outtaskdefs=null;
  88         PrintWriter outoptionalarrays=null;
  89         PrintWriter optionalheaders=null;
  90
  91         try {
  92             outstructs=new PrintWriter(new FileOutputStream(PREFIX+"structdefs.h"), true);
  93             outmethodheader=new PrintWriter(new FileOutputStream(PREFIX+"methodheaders.h"), true);
  94             outclassdefs=new PrintWriter(new FileOutputStream(PREFIX+"classdefs.h"), true);
  95             outmethod=new PrintWriter(new FileOutputStream(PREFIX+"methods.c"), true);
  96             outvirtual=new PrintWriter(new FileOutputStream(PREFIX+"virtualtable.h"), true);
  97             if (state.TASK) {
  98                 outtask=new PrintWriter(new FileOutputStream(PREFIX+"task.h"), true);
  99                 outtaskdefs=new PrintWriter(new FileOutputStream(PREFIX+"taskdefs.c"), true);
 100                 if (state.OPTIONAL){
 101                     outoptionalarrays=new PrintWriter(new FileOutputStream(PREFIX+"optionalarrays.c"), true);
 102                     optionalheaders=new PrintWriter(new FileOutputStream(PREFIX+"optionalstruct.h"), true);
 103                 }
 104             }
 105             if (state.structfile!=null) {
 106                 outrepairstructs=new PrintWriter(new FileOutputStream(PREFIX+state.structfile+".struct"), true);
 107             }
 108         } catch (Exception e) {
 109             e.printStackTrace();
 110             System.exit(-1);
 111         }
 112
 113         /* Build the virtual dispatch tables */
 114         buildVirtualTables(outvirtual);
 115
 116         /* Output includes */
 117         outmethodheader.println("#ifndef METHODHEADERS_H");
 118         outmethodheader.println("#define METHODHEADERS_H");
 119         outmethodheader.println("#include \"structdefs.h\"");
 120         if (state.DSM)
 121             outmethodheader.println("#include \"dstm.h\"");
 122
 123         /* Output Structures */
 124         outputStructs(outstructs);
 125
 126         // Output the C class declarations
 127         // These could mutually reference each other
 128         outputClassDeclarations(outclassdefs);
 129
 130         // Output function prototypes and structures for parameters
 131         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 132         while(it.hasNext()) {
 133             ClassDescriptor cn=(ClassDescriptor)it.next();
 134             generateCallStructs(cn, outclassdefs, outstructs, outmethodheader);
 135         }
 136         outclassdefs.close();
 137
 138         if (state.TASK) {
 139             /* Map flags to integers */
 140             /* The runtime keeps track of flags using these integers */
 141             it=state.getClassSymbolTable().getDescriptorsIterator();
 142             while(it.hasNext()) {
 143                 ClassDescriptor cn=(ClassDescriptor)it.next();
 144                 mapFlags(cn);
 145             }
 146             /* Generate Tasks */
 147             generateTaskStructs(outstructs, outmethodheader);
 148
 149             /* Outputs generic task structures if this is a task
 150                program */
 151             outputTaskTypes(outtask);
 152         }
 153
 154         /* Build the actual methods */
 155         outputMethods(outmethod);
 156
 157         if (state.TASK) {
 158             /* Output code for tasks */
 159             outputTaskCode(outtaskdefs, outmethod);
 160             outtaskdefs.close();
 161             /* Record maximum number of task parameters */
 162             outstructs.println("#define MAXTASKPARAMS "+maxtaskparams);
 163         } else if (state.main!=null) {
 164             /* Generate main method */
 165             outputMainMethod(outmethod);
 166         }
 167
 168         /* Generate information for task with optional parameters */
 169         if (state.TASK&&state.OPTIONAL){
 170             generateOptionalArrays(outoptionalarrays, optionalheaders, state.getAnalysisResult(), state.getOptionalTaskDescriptors());
 171             outoptionalarrays.close();
 172         }
 173
 174         /* Output structure definitions for repair tool */
 175         if (state.structfile!=null) {
 176             buildRepairStructs(outrepairstructs);
 177             outrepairstructs.close();
 178         }
 179
 180         /* Close files */
 181         outmethodheader.println("#endif");
 182         outmethodheader.close();
 183         outmethod.close();
 184         outstructs.println("#endif");
 185         outstructs.close();
 186     }
 187
 188     /* This code just generates the main C method for java programs.
 189      * The main C method packs up the arguments into a string array
 190      * and passes it to the java main method. */
 191
 192     private void outputMainMethod(PrintWriter outmethod) {
 193         outmethod.println("int main(int argc, const char *argv[]) {");
 194         outmethod.println("  int i;");
 195         if (state.THREAD||state.DSM) {
 196             outmethod.println("initializethreads();");
 197         }
 198         if (state.DSM) {
 199             outmethod.println("if (dstmStartup(argv[1])) {");
 200             if (GENERATEPRECISEGC) {
 201                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-2);");
 202             } else {
 203                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-2);");
 204             }
 205         } else {
 206             if (GENERATEPRECISEGC) {
 207                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(NULL, STRINGARRAYTYPE, argc-1);");
 208             } else {
 209                 outmethod.println("  struct ArrayObject * stringarray=allocate_newarray(STRINGARRAYTYPE, argc-1);");
 210             }
 211         }
 212         if (state.DSM) {
 213             outmethod.println("  for(i=2;i<argc;i++) {");
 214         } else
 215             outmethod.println("  for(i=1;i<argc;i++) {");
 216         outmethod.println("    int length=strlen(argv[i]);");
 217         if (GENERATEPRECISEGC) {
 218             outmethod.println("    struct ___String___ *newstring=NewString(NULL, argv[i], length);");
 219         } else {
 220             outmethod.println("    struct ___String___ *newstring=NewString(argv[i], length);");
 221         }
 222         if (state.DSM)
 223             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-2]=newstring;");
 224         else
 225             outmethod.println("    ((void **)(((char *)& stringarray->___length___)+sizeof(int)))[i-1]=newstring;");
 226         outmethod.println("  }");
 227
 228
 229         MethodDescriptor md=typeutil.getMain();
 230         ClassDescriptor cd=typeutil.getMainClass();
 231
 232         outmethod.println("   {");
 233         if (GENERATEPRECISEGC) {
 234             if (state.DSM) {
 235                 outmethod.print("       struct "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 236             } else
 237                 outmethod.print("       struct "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
 238             outmethod.println("1, NULL,"+"stringarray};");
 239             if (state.DSM)
 240                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 241             else
 242                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(& __parameterlist__);");
 243         } else {
 244             if (state.DSM)
 245                 outmethod.println("     "+cd.getSafeSymbol()+locality.getMain().getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 246             else
 247                 outmethod.println("     "+cd.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(stringarray);");
 248         }
 249         outmethod.println("   }");
 250
 251         if (state.DSM) {
 252             outmethod.println("}");
 253         }
 254
 255         if (state.THREAD||state.DSM) {
 256             outmethod.println("pthread_mutex_lock(&gclistlock);");
 257             outmethod.println("threadcount--;");
 258             outmethod.println("pthread_cond_signal(&gccond);");
 259             outmethod.println("pthread_mutex_unlock(&gclistlock);");
 260             if (state.THREAD)
 261                 outmethod.println("pthread_exit(NULL);");
 262         }
 263
 264
 265         outmethod.println("}");
 266     }
 267
 268     /* This method outputs code for each task. */
 269
 270     private void outputTaskCode(PrintWriter outtaskdefs, PrintWriter outmethod) {
 271         /* Compile task based program */
 272         outtaskdefs.println("#include \"task.h\"");
 273         outtaskdefs.println("#include \"methodheaders.h\"");
 274         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 275         while(taskit.hasNext()) {
 276             TaskDescriptor td=(TaskDescriptor)taskit.next();
 277             FlatMethod fm=state.getMethodFlat(td);
 278             generateFlatMethod(fm, null, outmethod);
 279             generateTaskDescriptor(outtaskdefs, fm, td);
 280         }
 281
 282         //Output task descriptors
 283         taskit=state.getTaskSymbolTable().getDescriptorsIterator();
 284         outtaskdefs.println("struct taskdescriptor * taskarray[]= {");
 285         boolean first=true;
 286         while(taskit.hasNext()) {
 287             TaskDescriptor td=(TaskDescriptor)taskit.next();
 288             if (first)
 289                 first=false;
 290             else
 291                 outtaskdefs.println(",");
 292             outtaskdefs.print("&task_"+td.getSafeSymbol());
 293         }
 294         outtaskdefs.println("};");
 295
 296         outtaskdefs.println("int numtasks="+state.getTaskSymbolTable().getValueSet().size()+";");
 297     }
 298
 299     /* This method outputs most of the methods.c file.  This includes
 300      * some standard includes and then an array with the sizes of
 301      * objets and array that stores supertype and then the code for
 302      * the Java methods.. */
 303
 304     private void outputMethods(PrintWriter outmethod) {
 305         outmethod.println("#include \"methodheaders.h\"");
 306         outmethod.println("#include \"virtualtable.h\"");
 307         outmethod.println("#include <runtime.h>");
 308         if (state.DSM) {
 309             outmethod.println("#include \"localobjects.h\"");
 310         }
 311         if (state.THREAD||state.DSM)
 312             outmethod.println("#include <thread.h>");
 313         if (state.main!=null) {
 314             outmethod.println("#include <string.h>");
 315         }
 316         if (state.CONSCHECK) {
 317             outmethod.println("#include \"checkers.h\"");
 318         }
 319         //Store the sizes of classes & array elements
 320         generateSizeArray(outmethod);
 321
 322         //Store table of supertypes
 323         generateSuperTypeTable(outmethod);
 324
 325         //Store the layout of classes
 326         generateLayoutStructs(outmethod);
 327
 328         /* Generate code for methods */
 329         if (state.DSM) {
 330             for(Iterator<LocalityBinding> lbit=locality.getLocalityBindings().iterator();lbit.hasNext();) {
 331                 LocalityBinding lb=lbit.next();
 332                 MethodDescriptor md=lb.getMethod();
 333                 FlatMethod fm=state.getMethodFlat(md);
 334                 if (!md.getModifiers().isNative()) {
 335                         generateFlatMethod(fm, lb, outmethod);
 336                 }
 337             }
 338         } else {
 339             Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 340             while(classit.hasNext()) {
 341                 ClassDescriptor cn=(ClassDescriptor)classit.next();
 342                 Iterator methodit=cn.getMethods();
 343                 while(methodit.hasNext()) {
 344                     /* Classify parameters */
 345                     MethodDescriptor md=(MethodDescriptor)methodit.next();
 346                     FlatMethod fm=state.getMethodFlat(md);
 347                     if (!md.getModifiers().isNative()) {
 348                         generateFlatMethod(fm, null, outmethod);
 349                     }
 350                 }
 351             }
 352         }
 353     }
 354
 355     private void outputStructs(PrintWriter outstructs) {
 356         outstructs.println("#ifndef STRUCTDEFS_H");
 357         outstructs.println("#define STRUCTDEFS_H");
 358         outstructs.println("#include \"classdefs.h\"");
 359
 360         /* Output #defines that the runtime uses to determine type
 361          * numbers for various objects it needs */
 362         outstructs.println("#define MAXCOUNT "+maxcount);
 363         if (state.DSM) {
 364             LocalityBinding lb=new LocalityBinding(typeutil.getRun(), false);
 365             lb.setGlobalThis(LocalityAnalysis.GLOBAL);
 366             outstructs.println("#define RUNMETHOD "+virtualcalls.getLocalityNumber(lb));
 367         }
 368
 369         outstructs.println("#define STRINGARRAYTYPE "+
 370                            (state.getArrayNumber(
 371                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.StringClass))).makeArray(state))+state.numClasses()));
 372
 373         outstructs.println("#define OBJECTARRAYTYPE "+
 374                            (state.getArrayNumber(
 375                                                  (new TypeDescriptor(typeutil.getClass(TypeUtil.ObjectClass))).makeArray(state))+state.numClasses()));
 376
 377
 378         outstructs.println("#define STRINGTYPE "+typeutil.getClass(TypeUtil.StringClass).getId());
 379         outstructs.println("#define CHARARRAYTYPE "+
 380                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.CHAR)).makeArray(state))+state.numClasses()));
 381
 382         outstructs.println("#define BYTEARRAYTYPE "+
 383                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state))+state.numClasses()));
 384
 385         outstructs.println("#define BYTEARRAYARRAYTYPE "+
 386                            (state.getArrayNumber((new TypeDescriptor(TypeDescriptor.BYTE)).makeArray(state).makeArray(state))+state.numClasses()));
 387
 388         outstructs.println("#define NUMCLASSES "+state.numClasses());
 389         if (state.TASK) {
 390             outstructs.println("#define STARTUPTYPE "+typeutil.getClass(TypeUtil.StartupClass).getId());
 391             outstructs.println("#define TAGTYPE "+typeutil.getClass(TypeUtil.TagClass).getId());
 392             outstructs.println("#define TAGARRAYTYPE "+
 393                                (state.getArrayNumber(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass)).makeArray(state))+state.numClasses()));
 394         }
 395     }
 396
 397     private void outputClassDeclarations(PrintWriter outclassdefs) {
 398         if (state.THREAD||state.DSM)
 399             outclassdefs.println("#include <pthread.h>");
 400         if(state.OPTIONAL)
 401             outclassdefs.println("#include \"optionalstruct.h\"");
 402         outclassdefs.println("struct "+arraytype+";");
 403         /* Start by declaring all structs */
 404         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 405         while(it.hasNext()) {
 406             ClassDescriptor cn=(ClassDescriptor)it.next();
 407             outclassdefs.println("struct "+cn.getSafeSymbol()+";");
 408         }
 409         outclassdefs.println("");
 410         //Print out definition for array type
 411         outclassdefs.println("struct "+arraytype+" {");
 412         outclassdefs.println("  int type;");
 413         if (state.THREAD) {
 414             outclassdefs.println("  pthread_t tid;");
 415             outclassdefs.println("  void * lockentry;");
 416             outclassdefs.println("  int lockcount;");
 417         }
 418         if (state.TASK) {
 419             outclassdefs.println("  int flag;");
 420             outclassdefs.println("  void * flagptr;");
 421             if(state.OPTIONAL){
 422                 outclassdefs.println("  int numfses;");
 423                 outclassdefs.println("  int * fses;");
 424             }
 425         }
 426         printClassStruct(typeutil.getClass(TypeUtil.ObjectClass), outclassdefs);
 427
 428         outclassdefs.println("  int ___length___;");
 429         outclassdefs.println("};\n");
 430         outclassdefs.println("extern int classsize[];");
 431         outclassdefs.println("extern int hasflags[];");
 432         outclassdefs.println("extern unsigned int * pointerarray[];");
 433         outclassdefs.println("extern int supertypes[];");
 434     }
 435
 436     /** Prints out definitions for generic task structures */
 437
 438     private void outputTaskTypes(PrintWriter outtask) {
 439         outtask.println("#ifndef _TASK_H");
 440         outtask.println("#define _TASK_H");
 441         outtask.println("struct parameterdescriptor {");
 442         outtask.println("int type;");
 443         outtask.println("int numberterms;");
 444         outtask.println("int *intarray;");
 445         outtask.println("void * queue;");
 446         outtask.println("int numbertags;");
 447         outtask.println("int *tagarray;");
 448         outtask.println("};");
 449
 450         outtask.println("struct taskdescriptor {");
 451         outtask.println("void * taskptr;");
 452         outtask.println("int numParameters;");
 453         outtask.println("int numTotal;");
 454         outtask.println("struct parameterdescriptor **descriptorarray;");
 455         outtask.println("char * name;");
 456         outtask.println("};");
 457         outtask.println("extern struct taskdescriptor * taskarray[];");
 458         outtask.println("extern numtasks;");
 459         outtask.println("#endif");
 460     }
 461
 462
 463     private void buildRepairStructs(PrintWriter outrepairstructs) {
 464         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 465         while(classit.hasNext()) {
 466             ClassDescriptor cn=(ClassDescriptor)classit.next();
 467             outrepairstructs.println("structure "+cn.getSymbol()+" {");
 468             outrepairstructs.println("  int __type__;");
 469             if (state.TASK) {
 470                 outrepairstructs.println("  int __flag__;");
 471                 outrepairstructs.println("  int __flagptr__;");
 472             }
 473             printRepairStruct(cn, outrepairstructs);
 474             outrepairstructs.println("}\n");
 475         }
 476
 477         for(int i=0;i<state.numArrays();i++) {
 478             TypeDescriptor tdarray=arraytable[i];
 479             TypeDescriptor tdelement=tdarray.dereference();
 480             outrepairstructs.println("structure "+arraytype+"_"+state.getArrayNumber(tdarray)+" {");
 481             outrepairstructs.println("  int __type__;");
 482             printRepairStruct(typeutil.getClass(TypeUtil.ObjectClass), outrepairstructs);
 483             outrepairstructs.println("  int length;");
 484             /*
 485               // Need to add support to repair tool for this
 486               if (tdelement.isClass()||tdelement.isArray())
 487                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" * elem[this.length];");
 488             else
 489                 outrepairstructs.println("  "+tdelement.getRepairSymbol()+" elem[this.length];");
 490             */
 491             outrepairstructs.println("}\n");
 492         }
 493     }
 494
 495     private void printRepairStruct(ClassDescriptor cn, PrintWriter output) {
 496         ClassDescriptor sp=cn.getSuperDesc();
 497         if (sp!=null)
 498             printRepairStruct(sp, output);
 499
 500         Vector fields=(Vector)fieldorder.get(cn);
 501
 502         for(int i=0;i<fields.size();i++) {
 503             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 504             if (fd.getType().isArray()) {
 505                 output.println("  "+arraytype+"_"+ state.getArrayNumber(fd.getType()) +" * "+fd.getSymbol()+";");
 506             } else if (fd.getType().isClass())
 507                 output.println("  "+fd.getType().getRepairSymbol()+" * "+fd.getSymbol()+";");
 508             else if (fd.getType().isFloat())
 509                 output.println("  int "+fd.getSymbol()+"; /* really float */");
 510             else
 511                 output.println("  "+fd.getType().getRepairSymbol()+" "+fd.getSymbol()+";");
 512         }
 513     }
 514
 515     /** This method outputs TaskDescriptor information */
 516     void generateTaskDescriptor(PrintWriter output, FlatMethod fm, TaskDescriptor task) {
 517         for (int i=0;i<task.numParameters();i++) {
 518             VarDescriptor param_var=task.getParameter(i);
 519             TypeDescriptor param_type=task.getParamType(i);
 520             FlagExpressionNode param_flag=task.getFlag(param_var);
 521             TagExpressionList param_tag=task.getTag(param_var);
 522
 523             int dnfterms;
 524             if (param_flag==null) {
 525                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 526                 output.println("0x0, 0x0 };");
 527                 dnfterms=1;
 528             } else {
 529                 DNFFlag dflag=param_flag.getDNF();
 530                 dnfterms=dflag.size();
 531
 532                 Hashtable flags=(Hashtable)flagorder.get(param_type.getClassDesc());
 533                 output.println("int parameterdnf_"+i+"_"+task.getSafeSymbol()+"[]={");
 534                 for(int j=0;j<dflag.size();j++) {
 535                     if (j!=0)
 536                         output.println(",");
 537                     Vector term=dflag.get(j);
 538                     int andmask=0;
 539                     int checkmask=0;
 540                     for(int k=0;k<term.size();k++) {
 541                         DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
 542                         FlagDescriptor fd=dfa.getFlag();
 543                         boolean negated=dfa.getNegated();
 544                         int flagid=1<<((Integer)flags.get(fd)).intValue();
 545                         andmask|=flagid;
 546                         if (!negated)
 547                             checkmask|=flagid;
 548                     }
 549                     output.print("0x"+Integer.toHexString(andmask)+", 0x"+Integer.toHexString(checkmask));
 550                 }
 551                 output.println("};");
 552             }
 553
 554             output.println("int parametertag_"+i+"_"+task.getSafeSymbol()+"[]={");
 555             //BUG...added next line to fix, test with any task program
 556             if (param_tag!=null)
 557                 for(int j=0;j<param_tag.numTags();j++) {
 558                     if (j!=0)
 559                         output.println(",");
 560                     /* for each tag we need */
 561                     /* which slot it is */
 562                     /* what type it is */
 563                     TagVarDescriptor tvd=(TagVarDescriptor)task.getParameterTable().get(param_tag.getName(j));
 564                     TempDescriptor tmp=param_tag.getTemp(j);
 565                     int slot=fm.getTagInt(tmp);
 566                     output.println(slot+", "+state.getTagId(tvd.getTag()));
 567                 }
 568             output.println("};");
 569
 570             output.println("struct parameterdescriptor parameter_"+i+"_"+task.getSafeSymbol()+"={");
 571             output.println("/* type */"+param_type.getClassDesc().getId()+",");
 572             output.println("/* number of DNF terms */"+dnfterms+",");
 573             output.println("parameterdnf_"+i+"_"+task.getSafeSymbol()+",");
 574             output.println("0,");
 575             //BUG, added next line to fix and else statement...test
 576             //with any task program
 577             if (param_tag!=null)
 578                 output.println("/* number of tags */"+param_tag.numTags()+",");
 579             else
 580                 output.println("/* number of tags */ 0,");
 581             output.println("parametertag_"+i+"_"+task.getSafeSymbol());
 582             output.println("};");
 583         }
 584
 585
 586         output.println("struct parameterdescriptor * parameterdescriptors_"+task.getSafeSymbol()+"[] = {");
 587         for (int i=0;i<task.numParameters();i++) {
 588             if (i!=0)
 589                 output.println(",");
 590             output.print("&parameter_"+i+"_"+task.getSafeSymbol());
 591         }
 592         output.println("};");
 593
 594         output.println("struct taskdescriptor task_"+task.getSafeSymbol()+"={");
 595         output.println("&"+task.getSafeSymbol()+",");
 596         output.println("/* number of parameters */" +task.numParameters() + ",");
 597         int numtotal=task.numParameters()+fm.numTags();
 598         output.println("/* number total parameters */" +numtotal + ",");
 599         output.println("parameterdescriptors_"+task.getSafeSymbol()+",");
 600         output.println("\""+task.getSymbol()+"\"");
 601         output.println("};");
 602     }
 603
 604
 605     /** The buildVirtualTables method outputs the virtual dispatch
 606      * tables for methods. */
 607
 608     private void buildVirtualTables(PrintWriter outvirtual) {
 609         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
 610         while(classit.hasNext()) {
 611             ClassDescriptor cd=(ClassDescriptor)classit.next();
 612             if (virtualcalls.getMethodCount(cd)>maxcount)
 613                 maxcount=virtualcalls.getMethodCount(cd);
 614         }
 615         MethodDescriptor[][] virtualtable=null;
 616         LocalityBinding[][] lbvirtualtable=null;
 617         if (state.DSM)
 618             lbvirtualtable=new LocalityBinding[state.numClasses()+state.numArrays()][maxcount];
 619         else
 620             virtualtable=new MethodDescriptor[state.numClasses()+state.numArrays()][maxcount];
 621
 622         /* Fill in virtual table */
 623         classit=state.getClassSymbolTable().getDescriptorsIterator();
 624         while(classit.hasNext()) {
 625             ClassDescriptor cd=(ClassDescriptor)classit.next();
 626             if (state.DSM)
 627                 fillinRow(cd, lbvirtualtable, cd.getId());
 628             else
 629                 fillinRow(cd, virtualtable, cd.getId());
 630         }
 631
 632         ClassDescriptor objectcd=typeutil.getClass(TypeUtil.ObjectClass);
 633         Iterator arrayit=state.getArrayIterator();
 634         while(arrayit.hasNext()) {
 635             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 636             int id=state.getArrayNumber(td);
 637             if (state.DSM)
 638                 fillinRow(objectcd, lbvirtualtable, id+state.numClasses());
 639             else
 640                 fillinRow(objectcd, virtualtable, id+state.numClasses());
 641         }
 642
 643         outvirtual.print("void * virtualtable[]={");
 644         boolean needcomma=false;
 645         for(int i=0;i<state.numClasses()+state.numArrays();i++) {
 646             for(int j=0;j<maxcount;j++) {
 647                 if (needcomma)
 648                     outvirtual.print(", ");
 649                 if (state.DSM&&lbvirtualtable[i][j]!=null) {
 650                     LocalityBinding lb=lbvirtualtable[i][j];
 651                     MethodDescriptor md=lb.getMethod();
 652                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 653                 } else if (!state.DSM&&virtualtable[i][j]!=null) {
 654                     MethodDescriptor md=virtualtable[i][j];
 655                     outvirtual.print("& "+md.getClassDesc().getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
 656                 } else {
 657                     outvirtual.print("0");
 658                 }
 659                 needcomma=true;
 660             }
 661             outvirtual.println("");
 662         }
 663         outvirtual.println("};");
 664         outvirtual.close();
 665     }
 666
 667     private void fillinRow(ClassDescriptor cd, MethodDescriptor[][] virtualtable, int rownum) {
 668         /* Get inherited methods */
 669         if (cd.getSuperDesc()!=null)
 670             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 671         /* Override them with our methods */
 672         for(Iterator it=cd.getMethods();it.hasNext();) {
 673             MethodDescriptor md=(MethodDescriptor)it.next();
 674             if (md.isStatic()||md.getReturnType()==null)
 675                 continue;
 676             int methodnum=virtualcalls.getMethodNumber(md);
 677             virtualtable[rownum][methodnum]=md;
 678         }
 679     }
 680
 681     private void fillinRow(ClassDescriptor cd, LocalityBinding[][] virtualtable, int rownum) {
 682         /* Get inherited methods */
 683         if (cd.getSuperDesc()!=null)
 684             fillinRow(cd.getSuperDesc(), virtualtable, rownum);
 685         /* Override them with our methods */
 686         if (locality.getClassBindings(cd)!=null)
 687             for(Iterator<LocalityBinding> lbit=locality.getClassBindings(cd).iterator();lbit.hasNext();) {
 688                 LocalityBinding lb=lbit.next();
 689                 MethodDescriptor md=lb.getMethod();
 690                 //Is the method static or a constructor
 691                 if (md.isStatic()||md.getReturnType()==null)
 692                     continue;
 693                 int methodnum=virtualcalls.getLocalityNumber(lb);
 694                 virtualtable[rownum][methodnum]=lb;
 695             }
 696     }
 697
 698
 699     /** Generate array that contains the sizes of class objects.  The
 700      * object allocation functions in the runtime use this
 701      * information. */
 702
 703     private void generateSizeArray(PrintWriter outclassdefs) {
 704         outclassdefs.print("int classsize[]={");
 705         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 706         cdarray=new ClassDescriptor[state.numClasses()];
 707         while(it.hasNext()) {
 708             ClassDescriptor cd=(ClassDescriptor)it.next();
 709             cdarray[cd.getId()]=cd;
 710         }
 711         boolean needcomma=false;
 712         for(int i=0;i<state.numClasses();i++) {
 713             if (needcomma)
 714                 outclassdefs.print(", ");
 715             outclassdefs.print("sizeof(struct "+cdarray[i].getSafeSymbol()+")");
 716             needcomma=true;
 717         }
 718
 719         arraytable=new TypeDescriptor[state.numArrays()];
 720
 721         Iterator arrayit=state.getArrayIterator();
 722         while(arrayit.hasNext()) {
 723             TypeDescriptor td=(TypeDescriptor)arrayit.next();
 724             int id=state.getArrayNumber(td);
 725             arraytable[id]=td;
 726         }
 727
 728         for(int i=0;i<state.numArrays();i++) {
 729             if (needcomma)
 730                 outclassdefs.print(", ");
 731             TypeDescriptor tdelement=arraytable[i].dereference();
 732             if (tdelement.isArray()||tdelement.isClass())
 733                 outclassdefs.print("sizeof(void *)");
 734             else
 735                 outclassdefs.print("sizeof("+tdelement.getSafeSymbol()+")");
 736             needcomma=true;
 737         }
 738
 739         outclassdefs.println("};");
 740     }
 741
 742     /** Constructs params and temp objects for each method or task.
 743      * These objects tell the compiler which temps need to be
 744      * allocated.  */
 745
 746     private void generateTempStructs(FlatMethod fm, LocalityBinding lb) {
 747         MethodDescriptor md=fm.getMethod();
 748         TaskDescriptor task=fm.getTask();
 749         Set<TempDescriptor> saveset=lb!=null?locality.getTempSet(lb):null;
 750         ParamsObject objectparams=md!=null?new ParamsObject(md,tag++):new ParamsObject(task, tag++);
 751
 752         if (lb!=null)
 753             paramstable.put(lb, objectparams);
 754         else if (md!=null)
 755             paramstable.put(md, objectparams);
 756         else
 757             paramstable.put(task, objectparams);
 758
 759         for(int i=0;i<fm.numParameters();i++) {
 760             TempDescriptor temp=fm.getParameter(i);
 761             TypeDescriptor type=temp.getType();
 762             if (type.isPtr()&&GENERATEPRECISEGC)
 763                 objectparams.addPtr(temp);
 764             else
 765                 objectparams.addPrim(temp);
 766             if(lb!=null&&saveset.contains(temp)) {
 767                 backuptable.put(temp, temp.createNew());
 768             }
 769         }
 770
 771         for(int i=0;i<fm.numTags();i++) {
 772             TempDescriptor temp=fm.getTag(i);
 773             if (GENERATEPRECISEGC)
 774                 objectparams.addPtr(temp);
 775             else
 776                 objectparams.addPrim(temp);
 777         }
 778
 779         TempObject objecttemps=md!=null?new TempObject(objectparams,md,tag++):new TempObject(objectparams, task, tag++);
 780         if (lb!=null)
 781             tempstable.put(lb, objecttemps);
 782         else if (md!=null)
 783             tempstable.put(md, objecttemps);
 784         else
 785             tempstable.put(task, objecttemps);
 786
 787         for(Iterator nodeit=fm.getNodeSet().iterator();nodeit.hasNext();) {
 788             FlatNode fn=(FlatNode)nodeit.next();
 789             TempDescriptor[] writes=fn.writesTemps();
 790             for(int i=0;i<writes.length;i++) {
 791                 TempDescriptor temp=writes[i];
 792                 TypeDescriptor type=temp.getType();
 793                 if (type.isPtr()&&GENERATEPRECISEGC)
 794                     objecttemps.addPtr(temp);
 795                 else
 796                     objecttemps.addPrim(temp);
 797                 if(lb!=null&&saveset.contains(temp)&&
 798                    !backuptable.containsKey(temp))
 799                     backuptable.put(temp, temp.createNew());
 800             }
 801         }
 802
 803         /* Create backup temps */
 804         if (lb!=null) {
 805             for(Iterator<TempDescriptor> tmpit=backuptable.values().iterator();tmpit.hasNext();) {
 806                 TempDescriptor tmp=tmpit.next();
 807                 TypeDescriptor type=tmp.getType();
 808                 if (type.isPtr()&&GENERATEPRECISEGC)
 809                     objecttemps.addPtr(tmp);
 810                 else
 811                     objecttemps.addPrim(tmp);
 812             }
 813             /* Create temp to hold revert table */
 814             if (lb.getHasAtomic()||lb.isAtomic()) {
 815                 TempDescriptor reverttmp=new TempDescriptor("revertlist", typeutil.getClass(TypeUtil.ObjectClass));
 816                 if (GENERATEPRECISEGC)
 817                     objecttemps.addPtr(reverttmp);
 818                 else
 819                     objecttemps.addPrim(reverttmp);
 820                 reverttable.put(lb, reverttmp);
 821             }
 822         }
 823     }
 824
 825     /** This method outputs the following information about classes
 826      * and arrays:
 827      * (1) For classes, what are the locations of pointers.
 828      * (2) For arrays, does the array contain pointers or primitives.
 829      * (3) For classes, does the class contain flags.
 830      */
 831
 832     private void generateLayoutStructs(PrintWriter output) {
 833         Iterator it=state.getClassSymbolTable().getDescriptorsIterator();
 834         while(it.hasNext()) {
 835             ClassDescriptor cn=(ClassDescriptor)it.next();
 836             output.println("unsigned int "+cn.getSafeSymbol()+"_pointers[]={");
 837             Iterator allit=cn.getFieldTable().getAllDescriptorsIterator();
 838             int count=0;
 839             while(allit.hasNext()) {
 840                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 841                 TypeDescriptor type=fd.getType();
 842                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 843                     continue;
 844                 if (type.isPtr())
 845                     count++;
 846             }
 847             output.print(count);
 848             allit=cn.getFieldTable().getAllDescriptorsIterator();
 849             while(allit.hasNext()) {
 850                 FieldDescriptor fd=(FieldDescriptor)allit.next();
 851                 TypeDescriptor type=fd.getType();
 852                 if (state.DSM&&fd.isGlobal()) //Don't GC the global objects for now
 853                     continue;
 854                 if (type.isPtr()) {
 855                     output.println(",");
 856                     output.print("((unsigned int)&(((struct "+cn.getSafeSymbol() +" *)0)->"+fd.getSafeSymbol()+"))");
 857                 }
 858             }
 859             output.println("};");
 860         }
 861         output.println("unsigned int * pointerarray[]={");
 862         boolean needcomma=false;
 863         for(int i=0;i<state.numClasses();i++) {
 864             ClassDescriptor cn=cdarray[i];
 865             if (needcomma)
 866                 output.println(",");
 867             needcomma=true;
 868             output.print(cn.getSafeSymbol()+"_pointers");
 869         }
 870
 871         for(int i=0;i<state.numArrays();i++) {
 872             if (needcomma)
 873                 output.println(", ");
 874             TypeDescriptor tdelement=arraytable[i].dereference();
 875             if (tdelement.isArray()||tdelement.isClass())
 876                 output.print("((unsigned int *)1)");
 877             else
 878                 output.print("0");
 879             needcomma=true;
 880         }
 881
 882         output.println("};");
 883         needcomma=false;
 884         output.println("int hasflags[]={");
 885         for(int i=0;i<state.numClasses();i++) {
 886             ClassDescriptor cn=cdarray[i];
 887             if (needcomma)
 888                 output.println(", ");
 889             needcomma=true;
 890             if (cn.hasFlags())
 891                 output.print("1");
 892             else
 893                 output.print("0");
 894         }
 895         output.println("};");
 896     }
 897
 898     /** Print out table to give us supertypes */
 899     private void generateSuperTypeTable(PrintWriter output) {
 900         output.println("int supertypes[]={");
 901         boolean needcomma=false;
 902         for(int i=0;i<state.numClasses();i++) {
 903             ClassDescriptor cn=cdarray[i];
 904             if (needcomma)
 905                 output.println(",");
 906             needcomma=true;
 907             if (cn.getSuperDesc()!=null) {
 908                 ClassDescriptor cdsuper=cn.getSuperDesc();
 909                 output.print(cdsuper.getId());
 910             } else
 911                 output.print("-1");
 912         }
 913         output.println("};");
 914     }
 915
 916     /** Force consistent field ordering between inherited classes. */
 917
 918     private void printClassStruct(ClassDescriptor cn, PrintWriter classdefout) {
 919
 920         ClassDescriptor sp=cn.getSuperDesc();
 921         if (sp!=null)
 922             printClassStruct(sp, classdefout);
 923
 924         if (!fieldorder.containsKey(cn)) {
 925             Vector fields=new Vector();
 926             fieldorder.put(cn,fields);
 927             Iterator fieldit=cn.getFields();
 928             while(fieldit.hasNext()) {
 929                 FieldDescriptor fd=(FieldDescriptor)fieldit.next();
 930                 if (sp==null||!sp.getFieldTable().contains(fd.getSymbol()))
 931                     fields.add(fd);
 932             }
 933         }
 934         Vector fields=(Vector)fieldorder.get(cn);
 935
 936         for(int i=0;i<fields.size();i++) {
 937             FieldDescriptor fd=(FieldDescriptor)fields.get(i);
 938             if (fd.getType().isClass()||fd.getType().isArray())
 939                 classdefout.println("  struct "+fd.getType().getSafeSymbol()+" * "+fd.getSafeSymbol()+";");
 940             else
 941                 classdefout.println("  "+fd.getType().getSafeSymbol()+" "+fd.getSafeSymbol()+";");
 942         }
 943     }
 944
 945
 946     /* Map flags to integers consistently between inherited
 947      * classes. */
 948
 949     private void mapFlags(ClassDescriptor cn) {
 950         ClassDescriptor sp=cn.getSuperDesc();
 951         if (sp!=null)
 952             mapFlags(sp);
 953         int max=0;
 954         if (!flagorder.containsKey(cn)) {
 955             Hashtable flags=new Hashtable();
 956             flagorder.put(cn,flags);
 957             if (sp!=null) {
 958                 Hashtable superflags=(Hashtable)flagorder.get(sp);
 959                 Iterator superflagit=superflags.keySet().iterator();
 960                 while(superflagit.hasNext()) {
 961                     FlagDescriptor fd=(FlagDescriptor)superflagit.next();
 962                     Integer number=(Integer)superflags.get(fd);
 963                     flags.put(fd, number);
 964                     if ((number.intValue()+1)>max)
 965                         max=number.intValue()+1;
 966                 }
 967             }
 968
 969             Iterator flagit=cn.getFlags();
 970             while(flagit.hasNext()) {
 971                 FlagDescriptor fd=(FlagDescriptor)flagit.next();
 972                 if (sp==null||!sp.getFlagTable().contains(fd.getSymbol()))
 973                     flags.put(fd, new Integer(max++));
 974             }
 975         }
 976     }
 977
 978
 979     /** This function outputs (1) structures that parameters are
 980      * passed in (when PRECISE GC is enabled) and (2) function
 981      * prototypes for the methods */
 982
 983     private void generateCallStructs(ClassDescriptor cn, PrintWriter classdefout, PrintWriter output, PrintWriter headersout) {
 984         /* Output class structure */
 985         classdefout.println("struct "+cn.getSafeSymbol()+" {");
 986         classdefout.println("  int type;");
 987         if (state.THREAD) {
 988             classdefout.println("  pthread_t tid;");
 989             classdefout.println("  void * lockentry;");
 990             classdefout.println("  int lockcount;");
 991         }
 992
 993         if (state.TASK) {
 994             classdefout.println("  int flag;");
 995             classdefout.println("  void * flagptr;");
 996             if (state.OPTIONAL){
 997                 classdefout.println("  int numfses;");
 998                 classdefout.println("  int * fses;");
 999             }
1000         }
1001         printClassStruct(cn, classdefout);
1002         classdefout.println("};\n");
1003
1004         if (state.DSM) {
1005             /* Cycle through LocalityBindings */
1006             HashSet<MethodDescriptor> nativemethods=new HashSet<MethodDescriptor>();
1007             Set<LocalityBinding> lbset=locality.getClassBindings(cn);
1008             if (lbset!=null) {
1009                 for(Iterator<LocalityBinding> lbit=lbset.iterator();lbit.hasNext();) {
1010                     LocalityBinding lb=lbit.next();
1011                     MethodDescriptor md=lb.getMethod();
1012                     if (md.getModifiers().isNative()) {
1013                         //make sure we only print a native method once
1014                         if (nativemethods.contains(md)) {
1015                             FlatMethod fm=state.getMethodFlat(md);
1016                             generateTempStructs(fm, lb);
1017                             continue;
1018                         } else
1019                             nativemethods.add(md);
1020                     }
1021                     generateMethod(cn, md, lb, headersout, output);
1022                 }
1023             }
1024             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1025                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1026                 if (md.getModifiers().isNative()&&!nativemethods.contains(md)) {
1027                     //Need to build param structure for library code
1028                     FlatMethod fm=state.getMethodFlat(md);
1029                     generateTempStructs(fm, null);
1030                     generateMethodParam(cn, md, null, output);
1031                 }
1032             }
1033
1034         } else
1035             for(Iterator methodit=cn.getMethods();methodit.hasNext();) {
1036                 MethodDescriptor md=(MethodDescriptor)methodit.next();
1037                 generateMethod(cn, md, null, headersout, output);
1038             }
1039     }
1040
1041     private void generateMethodParam(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter output) {
1042         /* Output parameter structure */
1043         if (GENERATEPRECISEGC) {
1044             ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1045             if (state.DSM&&lb!=null)
1046                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1047             else
1048                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params {");
1049             output.println("  int size;");
1050             output.println("  void * next;");
1051             for(int i=0;i<objectparams.numPointers();i++) {
1052                 TempDescriptor temp=objectparams.getPointer(i);
1053                 output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1054             }
1055             output.println("};\n");
1056         }
1057     }
1058
1059
1060     private void generateMethod(ClassDescriptor cn, MethodDescriptor md, LocalityBinding lb, PrintWriter headersout, PrintWriter output) {
1061         FlatMethod fm=state.getMethodFlat(md);
1062         generateTempStructs(fm, lb);
1063
1064         ParamsObject objectparams=(ParamsObject) paramstable.get(lb!=null?lb:md);
1065         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md);
1066
1067         generateMethodParam(cn, md, lb, output);
1068
1069         /* Output temp structure */
1070         if (GENERATEPRECISEGC) {
1071             if (state.DSM)
1072                 output.println("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1073             else
1074                 output.println("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals {");
1075             output.println("  int size;");
1076             output.println("  void * next;");
1077             for(int i=0;i<objecttemps.numPointers();i++) {
1078                 TempDescriptor temp=objecttemps.getPointer(i);
1079                 if (temp.getType().isNull())
1080                     output.println("  void * "+temp.getSafeSymbol()+";");
1081                 else
1082                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1083             }
1084             output.println("};\n");
1085         }
1086
1087         /********* Output method declaration ***********/
1088
1089         /* First the return type */
1090         if (md.getReturnType()!=null) {
1091             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1092                 headersout.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1093             else
1094                 headersout.print(md.getReturnType().getSafeSymbol()+" ");
1095         } else
1096             //catch the constructor case
1097             headersout.print("void ");
1098
1099         /* Next the method name */
1100         if (state.DSM) {
1101             headersout.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1102         } else
1103             headersout.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
1104
1105         boolean printcomma=false;
1106         if (GENERATEPRECISEGC) {
1107             if (state.DSM) {
1108                 headersout.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1109             } else
1110                 headersout.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
1111             printcomma=true;
1112         }
1113
1114         if (state.DSM&&lb.isAtomic()) {
1115             if (printcomma)
1116                 headersout.print(", ");
1117             headersout.print("transrecord_t * trans");
1118             printcomma=true;
1119         }
1120
1121         /*  Output parameter list*/
1122         for(int i=0;i<objectparams.numPrimitives();i++) {
1123             TempDescriptor temp=objectparams.getPrimitive(i);
1124             if (printcomma)
1125                 headersout.print(", ");
1126             printcomma=true;
1127             if (temp.getType().isClass()||temp.getType().isArray())
1128                 headersout.print("struct " + temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
1129             else
1130                 headersout.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
1131         }
1132         headersout.println(");\n");
1133     }
1134
1135
1136     /** This function outputs (1) structures that parameters are
1137      * passed in (when PRECISE GC is enabled) and (2) function
1138      * prototypes for the tasks */
1139
1140     private void generateTaskStructs(PrintWriter output, PrintWriter headersout) {
1141         /* Cycle through tasks */
1142         Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
1143
1144         while(taskit.hasNext()) {
1145             /* Classify parameters */
1146             TaskDescriptor task=(TaskDescriptor)taskit.next();
1147             FlatMethod fm=state.getMethodFlat(task);
1148             generateTempStructs(fm, null);
1149
1150             ParamsObject objectparams=(ParamsObject) paramstable.get(task);
1151             TempObject objecttemps=(TempObject) tempstable.get(task);
1152
1153             /* Output parameter structure */
1154             if (GENERATEPRECISEGC) {
1155                 output.println("struct "+task.getSafeSymbol()+"_params {");
1156
1157                 output.println("  int size;");
1158                 output.println("  void * next;");
1159                 for(int i=0;i<objectparams.numPointers();i++) {
1160                     TempDescriptor temp=objectparams.getPointer(i);
1161                     output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1162                 }
1163
1164                 output.println("};\n");
1165                 if ((objectparams.numPointers()+fm.numTags())>maxtaskparams) {
1166                     maxtaskparams=objectparams.numPointers()+fm.numTags();
1167                 }
1168             }
1169
1170             /* Output temp structure */
1171             if (GENERATEPRECISEGC) {
1172                 output.println("struct "+task.getSafeSymbol()+"_locals {");
1173                 output.println("  int size;");
1174                 output.println("  void * next;");
1175                 for(int i=0;i<objecttemps.numPointers();i++) {
1176                     TempDescriptor temp=objecttemps.getPointer(i);
1177                     if (temp.getType().isNull())
1178                         output.println("  void * "+temp.getSafeSymbol()+";");
1179                     else if(temp.getType().isTag())
1180                         output.println("  struct "+
1181                                        (new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1182                     else
1183                         output.println("  struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+";");
1184                 }
1185                 output.println("};\n");
1186             }
1187
1188             /* Output task declaration */
1189             headersout.print("void " + task.getSafeSymbol()+"(");
1190
1191             boolean printcomma=false;
1192             if (GENERATEPRECISEGC) {
1193                 headersout.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
1194             } else
1195                 headersout.print("void * parameterarray[]");
1196             headersout.println(");\n");
1197         }
1198     }
1199
1200     /***** Generate code for FlatMethod fm. *****/
1201
1202     private void generateFlatMethod(FlatMethod fm, LocalityBinding lb, PrintWriter output) {
1203         MethodDescriptor md=fm.getMethod();
1204
1205         TaskDescriptor task=fm.getTask();
1206
1207         ClassDescriptor cn=md!=null?md.getClassDesc():null;
1208
1209         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:md!=null?md:task);
1210         generateHeader(fm, lb, md!=null?md:task,output);
1211         TempObject objecttemp=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1212         if (state.DSM&&lb.getHasAtomic()) {
1213             output.println("transrecord_t * trans;");
1214         }
1215
1216         if (GENERATEPRECISEGC) {
1217             if (md!=null&&state.DSM)
1218                 output.print("   struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1219             else if (md!=null&&!state.DSM)
1220                 output.print("   struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_locals "+localsprefix+"={");
1221             else
1222                 output.print("   struct "+task.getSafeSymbol()+"_locals "+localsprefix+"={");
1223
1224             output.print(objecttemp.numPointers()+",");
1225             output.print(paramsprefix);
1226             for(int j=0;j<objecttemp.numPointers();j++)
1227                 output.print(", NULL");
1228             output.println("};");
1229         }
1230
1231         for(int i=0;i<objecttemp.numPrimitives();i++) {
1232             TempDescriptor td=objecttemp.getPrimitive(i);
1233             TypeDescriptor type=td.getType();
1234             if (type.isNull())
1235                 output.println("   void * "+td.getSafeSymbol()+";");
1236             else if (type.isClass()||type.isArray())
1237                 output.println("   struct "+type.getSafeSymbol()+" * "+td.getSafeSymbol()+";");
1238             else
1239                 output.println("   "+type.getSafeSymbol()+" "+td.getSafeSymbol()+";");
1240         }
1241
1242         /* Assign labels to FlatNode's if necessary.*/
1243
1244         Hashtable<FlatNode, Integer> nodetolabel=assignLabels(fm);
1245
1246         /* Check to see if we need to do a GC if this is a
1247          * multi-threaded program...*/
1248
1249         if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1250             if (state.DSM&&lb.isAtomic())
1251                 output.println("checkcollect2(&"+localsprefix+",trans);");
1252             else
1253                 output.println("checkcollect(&"+localsprefix+");");
1254         }
1255
1256         /* Do the actual code generation */
1257         FlatNode current_node=null;
1258         HashSet tovisit=new HashSet();
1259         HashSet visited=new HashSet();
1260         tovisit.add(fm.getNext(0));
1261         while(current_node!=null||!tovisit.isEmpty()) {
1262             if (current_node==null) {
1263                 current_node=(FlatNode)tovisit.iterator().next();
1264                 tovisit.remove(current_node);
1265             }
1266             visited.add(current_node);
1267             if (nodetolabel.containsKey(current_node))
1268                 output.println("L"+nodetolabel.get(current_node)+":");
1269             if (state.INSTRUCTIONFAILURE) {
1270                 if (state.THREAD||state.DSM) {
1271                     output.println("if ((++instructioncount)>failurecount) {instructioncount=0;injectinstructionfailure();}");
1272                 }
1273                 else
1274                     output.println("if ((--instructioncount)==0) injectinstructionfailure();");
1275             }
1276             if (current_node.numNext()==0) {
1277                 output.print("   ");
1278                 generateFlatNode(fm, lb, current_node, output);
1279                 if (current_node.kind()!=FKind.FlatReturnNode) {
1280                     output.println("   return;");
1281                 }
1282                 current_node=null;
1283             } else if(current_node.numNext()==1) {
1284                 output.print("   ");
1285                 generateFlatNode(fm, lb, current_node, output);
1286                 FlatNode nextnode=current_node.getNext(0);
1287                 if (visited.contains(nextnode)) {
1288                     output.println("goto L"+nodetolabel.get(nextnode)+";");
1289                     current_node=null;
1290                 } else
1291                     current_node=nextnode;
1292             } else if (current_node.numNext()==2) {
1293                 /* Branch */
1294                 output.print("   ");
1295                 generateFlatCondBranch(fm, lb, (FlatCondBranch)current_node, "L"+nodetolabel.get(current_node.getNext(1)), output);
1296                 if (!visited.contains(current_node.getNext(1)))
1297                     tovisit.add(current_node.getNext(1));
1298                 if (visited.contains(current_node.getNext(0))) {
1299                     output.println("goto L"+nodetolabel.get(current_node.getNext(0))+";");
1300                     current_node=null;
1301                 } else
1302                     current_node=current_node.getNext(0);
1303             } else throw new Error();
1304         }
1305         output.println("}\n\n");
1306     }
1307
1308     /** This method assigns labels to FlatNodes */
1309
1310     private Hashtable<FlatNode, Integer> assignLabels(FlatMethod fm) {
1311         HashSet tovisit=new HashSet();
1312         HashSet visited=new HashSet();
1313         int labelindex=0;
1314         Hashtable<FlatNode, Integer> nodetolabel=new Hashtable<FlatNode, Integer>();
1315         tovisit.add(fm.getNext(0));
1316
1317         /*Assign labels first.  A node needs a label if the previous
1318          * node has two exits or this node is a join point. */
1319
1320         while(!tovisit.isEmpty()) {
1321             FlatNode fn=(FlatNode)tovisit.iterator().next();
1322             tovisit.remove(fn);
1323             visited.add(fn);
1324             for(int i=0;i<fn.numNext();i++) {
1325                 FlatNode nn=fn.getNext(i);
1326                 if(i>0) {
1327                     //1) Edge >1 of node
1328                     nodetolabel.put(nn,new Integer(labelindex++));
1329                 }
1330                 if (!visited.contains(nn)&&!tovisit.contains(nn)) {
1331                     tovisit.add(nn);
1332                 } else {
1333                     //2) Join point
1334                     nodetolabel.put(nn,new Integer(labelindex++));
1335                 }
1336             }
1337         }
1338         return nodetolabel;
1339     }
1340
1341
1342     /** Generate text string that corresponds to the TempDescriptor td. */
1343     private String generateTemp(FlatMethod fm, TempDescriptor td, LocalityBinding lb) {
1344         MethodDescriptor md=fm.getMethod();
1345         TaskDescriptor task=fm.getTask();
1346         TempObject objecttemps=(TempObject) tempstable.get(lb!=null?lb:md!=null?md:task);
1347
1348         if (objecttemps.isLocalPrim(td)||objecttemps.isParamPrim(td)) {
1349             return td.getSafeSymbol();
1350         }
1351
1352         if (objecttemps.isLocalPtr(td)) {
1353             return localsprefix+"."+td.getSafeSymbol();
1354         }
1355
1356         if (objecttemps.isParamPtr(td)) {
1357             return paramsprefix+"->"+td.getSafeSymbol();
1358         }
1359         throw new Error();
1360     }
1361
1362     private void generateFlatNode(FlatMethod fm, LocalityBinding lb, FlatNode fn, PrintWriter output) {
1363         switch(fn.kind()) {
1364         case FKind.FlatAtomicEnterNode:
1365             generateFlatAtomicEnterNode(fm, lb, (FlatAtomicEnterNode) fn, output);
1366             return;
1367         case FKind.FlatAtomicExitNode:
1368             generateFlatAtomicExitNode(fm, lb, (FlatAtomicExitNode) fn, output);
1369             return;
1370         case FKind.FlatGlobalConvNode:
1371             generateFlatGlobalConvNode(fm, lb, (FlatGlobalConvNode) fn, output);
1372             return;
1373         case FKind.FlatTagDeclaration:
1374             generateFlatTagDeclaration(fm, lb, (FlatTagDeclaration) fn,output);
1375             return;
1376         case FKind.FlatCall:
1377             generateFlatCall(fm, lb, (FlatCall) fn,output);
1378             return;
1379         case FKind.FlatFieldNode:
1380             generateFlatFieldNode(fm, lb, (FlatFieldNode) fn,output);
1381             return;
1382         case FKind.FlatElementNode:
1383             generateFlatElementNode(fm, lb, (FlatElementNode) fn,output);
1384             return;
1385         case FKind.FlatSetElementNode:
1386             generateFlatSetElementNode(fm, lb, (FlatSetElementNode) fn,output);
1387             return;
1388         case FKind.FlatSetFieldNode:
1389             generateFlatSetFieldNode(fm, lb, (FlatSetFieldNode) fn,output);
1390             return;
1391         case FKind.FlatNew:
1392             generateFlatNew(fm, lb, (FlatNew) fn,output);
1393             return;
1394         case FKind.FlatOpNode:
1395             generateFlatOpNode(fm, lb, (FlatOpNode) fn,output);
1396             return;
1397         case FKind.FlatCastNode:
1398             generateFlatCastNode(fm, lb, (FlatCastNode) fn,output);
1399             return;
1400         case FKind.FlatLiteralNode:
1401             generateFlatLiteralNode(fm, lb, (FlatLiteralNode) fn,output);
1402             return;
1403         case FKind.FlatReturnNode:
1404             generateFlatReturnNode(fm, lb, (FlatReturnNode) fn,output);
1405             return;
1406         case FKind.FlatNop:
1407             output.println("/* nop */");
1408             return;
1409         case FKind.FlatBackEdge:
1410             if ((state.THREAD||state.DSM)&&GENERATEPRECISEGC) {
1411                 if(state.DSM&&locality.getAtomic(lb).get(fn).intValue()>0) {
1412                     output.println("checkcollect2(&"+localsprefix+",trans);");
1413                 } else
1414                     output.println("checkcollect(&"+localsprefix+");");
1415             } else
1416                 output.println("/* nop */");
1417             return;
1418         case FKind.FlatCheckNode:
1419             generateFlatCheckNode(fm, lb, (FlatCheckNode) fn, output);
1420             return;
1421         case FKind.FlatFlagActionNode:
1422             generateFlatFlagActionNode(fm, lb, (FlatFlagActionNode) fn, output);
1423             return;
1424         case FKind.FlatPrefetchNode:
1425             if (!state.excprefetch.contains(fm.getMethod().getClassMethodName()))
1426                 generateFlatPrefetchNode(fm,lb, (FlatPrefetchNode) fn, output);
1427             return;
1428         }
1429         throw new Error();
1430     }
1431
1432     public void generateFlatPrefetchNode(FlatMethod fm, LocalityBinding lb, FlatPrefetchNode fpn, PrintWriter output) {
1433             short[] arrayfields = null;
1434             Vector fieldoffset = new Vector();
1435             Vector endoffset = new Vector();
1436             Vector oids = new Vector();
1437             short offsetcount = 0;
1438             int tuplecount = 0;  //Keeps track of number of prefetch tuples that need to be generated
1439             int i,j;
1440
1441             if (state.PREFETCH) {
1442                     output.println("/* prefetch */");
1443                     output.println("; /* empty statement to avoid compiler error */");
1444                     Iterator it = fpn.hspp.iterator();
1445                     String oidlist = new String();
1446                     while(it.hasNext()) {
1447                             PrefetchPair pp = (PrefetchPair) it.next();
1448                             Integer statusbase = locality.getNodePreTempInfo(lb,fpn).get(pp.base);
1449                             /* Find prefetches that can generate oid */
1450                             if(statusbase == LocalityAnalysis.GLOBAL) {
1451                                     if(locality.getAtomic(lb).get(fpn).intValue()>0) { /* Inside transaction */
1452                                             generateInsideTransCode(fm,lb,output, pp,oids,fieldoffset,endoffset,tuplecount);
1453                                     } else {/* Outside Transaction */
1454                                             generateOutsideTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1455                                     }
1456                                     tuplecount++;
1457                             } else if(statusbase == LocalityAnalysis.LOCAL) {
1458                                     generateLocalTransCode(fm,lb,pp,oids,fieldoffset,endoffset,tuplecount);
1459                             } else {
1460                                     continue;
1461                             }
1462                     }
1463
1464                     /*Create C code for numtuples */
1465                     output.println("   int numtuples_" + count + " = " + tuplecount + ";");
1466
1467                     /*Create C code for oid array */
1468                     output.print("   unsigned int oidarray_" + count + "[] = {");
1469                     boolean needcomma=false;
1470                     it = oids.iterator();
1471                     while(it.hasNext()) {
1472                             if (needcomma)
1473                                     output.print(", ");
1474                             output.print(it.next());
1475                             needcomma=true;
1476                     }
1477                     output.println("};");
1478
1479                     /*Create C code for endoffset values */
1480                     output.print("   unsigned short endoffsetarry_" + count +"[] = {");
1481                     needcomma=false;
1482                     it = endoffset.iterator();
1483                     while(it.hasNext()) {
1484                             if (needcomma)
1485                                     output.print(", ");
1486                             output.print(it.next());
1487                             needcomma=true;
1488                     }
1489                     output.println("};");
1490
1491                     /*Create C code for Field Offset Values */
1492                     output.print("   short fieldarry_" + count +"[] = {");
1493                     needcomma=false;
1494                     it = fieldoffset.iterator();
1495                     while(it.hasNext()) {
1496                             if (needcomma)
1497                                     output.print(", ");
1498                             output.print(it.next());
1499                             needcomma=true;
1500                     }
1501                     output.println("};");
1502                     /* make the prefetch call to Runtime */
1503                     if(tuplecount > 0) {
1504                             output.println("   prefetch((int) numtuples_"+count+ ", oidarray_"+count+ ", endoffsetarry_"+
1505                                             count+", fieldarry_"+count+");");
1506                     }
1507                     count++;
1508             }
1509
1510             /* Free heap memory */
1511             fieldoffset = null;
1512             endoffset = null;
1513             oids = null;
1514     }
1515
1516     public void generateInsideTransCode(FlatMethod fm, LocalityBinding lb,PrintWriter output,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount){
1517             int i,j;
1518             short offsetcount = 0;
1519             String test = new String();
1520
1521             Object newdesc = pp.desc.get(0);
1522             if(newdesc instanceof FieldDescriptor) {
1523                     FieldDescriptor fd = (FieldDescriptor)newdesc;
1524                     String oid = new String("(unsigned int) (" +
1525                                     generateTemp(fm, pp.base, lb) + " != NULL ? " +
1526                                     generateTemp(fm, pp.base, lb) + "->" + ((FieldDescriptor)fd).getSafeSymbol() +
1527                                     " : NULL)");
1528                     oids.add(oid);
1529             } else {
1530                     IndexDescriptor id = (IndexDescriptor)newdesc;
1531                     String tstlbl = new String();
1532                     for(i=0; i<id.tddesc.size(); i++) {
1533                             tstlbl += generateTemp(fm, id.getTempDescAt(i), lb) + "+";
1534                     }
1535                     tstlbl += id.offset.toString();
1536
1537                     TypeDescriptor elementtype = pp.base.getType().dereference();
1538                     String type="";
1539                     if (elementtype.isArray()||elementtype.isClass())
1540                             type="void *";
1541                     else
1542                             type=elementtype.getSafeSymbol()+" ";
1543
1544                     String oid = new String("(unsigned int) (" + generateTemp(fm, pp.base, lb) + " != NULL ? " +
1545                                     "((" + tstlbl+"< 0 || "+tstlbl+" >= "+ generateTemp(fm, pp.base, lb) + "->___length___) ? 0 :"+
1546                                     "((" + type + "*)(((char *) &("+ generateTemp(fm, pp.base, lb)+ "->___length___))+sizeof(int)))["+tstlbl+"]) : 0)");
1547                     oids.add(oid);
1548             }
1549
1550             for(i = 1; i < pp.desc.size(); i++) {
1551                     TypeDescriptor newtd;
1552                     ClassDescriptor cd;
1553                     String newfieldoffset;
1554                     Object desc = pp.getDescAt(i);
1555                     offsetcount++;
1556                     if(desc instanceof FieldDescriptor) {
1557                             Object prevdesc = pp.getDescAt(i-1);
1558                             if(prevdesc instanceof IndexDescriptor){
1559                                     if((i-1) == 0) {
1560                                             newtd = pp.base.getType();
1561                                             cd = newtd.getClassDesc();
1562                                     } else {
1563                                             //FIXME currently handles one dimensional arrays
1564                                             newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1565                                             cd = newtd.getClassDesc();
1566                                     }
1567                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ cd.getSafeSymbol() +" *)0)->"+
1568                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1569                             } else {
1570                                     newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1571                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1572                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1573                             }
1574                             fieldoffset.add(newfieldoffset);
1575                     } else {
1576                             String tstlbl = new String();
1577                             for(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1578                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), lb) + "+";
1579                             }
1580                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1581                             newfieldoffset = new String(tstlbl);
1582                             fieldoffset.add(newfieldoffset);
1583                     }
1584             }
1585             if(tuplecount > 0) {
1586                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1587                     short endoffsetval = (short) tmp;
1588                     endoffset.add(endoffsetval);
1589             }else {
1590                     endoffset.add(offsetcount);
1591             }
1592             flagcount++;
1593     }
1594
1595     public void generateOutsideTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp, Vector oids, Vector fieldoffset, Vector endoffset, int tuplecount) {
1596             int i,j;
1597             short offsetcount = 0;
1598
1599             String oid = new String(" (unsigned int) (" + generateTemp(fm, pp.base, lb)+ ")");
1600             oids.add(oid);
1601             for(i = 0; i < pp.desc.size(); i++) {
1602                     TypeDescriptor newtd;
1603                     ClassDescriptor cd;
1604                     String newfieldoffset;
1605                     Object desc = pp.getDescAt(i);
1606                     offsetcount++;
1607                     if(desc instanceof FieldDescriptor) {
1608                             if(i == 0){
1609                                     newtd = pp.base.getType();
1610                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1611                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1612                             } else {
1613                                     Object prevdesc = pp.getDescAt(i-1);
1614                                     if(prevdesc instanceof IndexDescriptor){
1615                                             if((i-1) == 0) {
1616                                                     newtd = pp.base.getType();
1617                                                     cd = newtd.getClassDesc();
1618                                             } else {
1619                                                     //FIXME currently handles one dimensional arrays
1620                                                     newtd = ((FieldDescriptor)pp.getDescAt(i-2)).getType();
1621                                                     cd = newtd.getClassDesc();
1622                                             }
1623                                             newfieldoffset = new String("(unsigned int)(&(((struct "+ cd.getSafeSymbol() +" *)0)->"+
1624                                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1625                                     } else {
1626                                             newtd = ((FieldDescriptor)pp.getDescAt(i-1)).getType();
1627                                             newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1628                                                             ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1629                                     }
1630                             }
1631                     } else {
1632                             String tstlbl = new String();
1633                             for(j = 0; j < ((IndexDescriptor)desc).tddesc.size(); j++) {
1634                                     tstlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(j), lb) + "+";
1635                             }
1636                             tstlbl += ((IndexDescriptor)desc).offset.toString();
1637                             newfieldoffset = new String(tstlbl);
1638                     }
1639                     fieldoffset.add(newfieldoffset);
1640             }
1641             if(tuplecount > 0) {
1642                     int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1643                     short endoffsetval = (short) tmp;
1644                     endoffset.add(endoffsetval);
1645             }else {
1646                     endoffset.add(offsetcount);
1647             }
1648     }
1649
1650     public void generateLocalTransCode(FlatMethod fm, LocalityBinding lb,PrefetchPair pp,Vector oids, Vector fieldoffset,Vector endoffset, int tuplecount) {
1651             int i, j, k;
1652             short offsetcount = 0;
1653
1654             Vector prefix = new Vector();
1655             prefix.add(generateTemp(fm,pp.base,lb));
1656             String tstlbl = new String("(" + prefix.get(0) + " != NULL ");
1657             for (i = 0; i < pp.desc.size(); i++) {
1658                     Object newdesc = pp.desc.get(i);
1659                     if(newdesc instanceof FieldDescriptor) {
1660                             FieldDescriptor fd = (FieldDescriptor) newdesc;
1661                             if(fd.isGlobal()){
1662                                     /* Field descriptor is global */
1663                                     String oid = new String(" (unsigned int) (");
1664                                     tstlbl += ") ? ";
1665                                     for(j = 0; j < prefix.size(); j++) {
1666                                             tstlbl += prefix.get(j) + "->";
1667                                     }
1668                                     tstlbl += fd.getSafeSymbol() + ": NULL";
1669                                     oid += tstlbl+ " )";
1670                                     oids.add(oid);
1671                                     for(j = i+1; j < pp.desc.size(); j++) {
1672                                             TypeDescriptor newtd;
1673                                             String newfieldoffset;
1674                                             Object desc = pp.getDescAt(j);
1675                                             offsetcount++;
1676                                             if(desc instanceof FieldDescriptor) {
1677                                                     Object prevdesc = pp.getDescAt(j-1);
1678                                                     if(prevdesc instanceof IndexDescriptor){
1679                                                             //FIXME currently handles one dimensional arrays
1680                                                             newtd = ((FieldDescriptor)pp.getDescAt(j-2)).getType();
1681                                                     } else {
1682                                                             newtd = ((FieldDescriptor) pp.getDescAt(j-1)).getType();
1683                                                     }
1684                                                     newfieldoffset = new String("(unsigned int)(&(((struct "+ newtd.getSafeSymbol()+" *)0)->"+
1685                                                                     ((FieldDescriptor)desc).getSafeSymbol()+ "))");
1686                                             } else {
1687                                                     String indexlbl = new String();
1688                                                     for(k = 0; k < ((IndexDescriptor)desc).tddesc.size(); k++) {
1689                                                             indexlbl += generateTemp(fm, ((IndexDescriptor)desc).getTempDescAt(k), lb) + "+";
1690                                                     }
1691                                                     indexlbl += ((IndexDescriptor)desc).offset.toString();
1692                                                     newfieldoffset = new String(indexlbl);
1693                                             }
1694                                             fieldoffset.add(newfieldoffset);
1695                                     }
1696                                     if(tuplecount > 0) {
1697                                             int tmp = (int) ((Short)(endoffset.get(tuplecount-1))).shortValue() + (int) offsetcount;
1698                                             short endoffsetval = (short) tmp;
1699                                             endoffset.add(endoffsetval);
1700                                     }else {
1701                                             endoffset.add(offsetcount);
1702                                     }
1703                                     tuplecount++;
1704                                     break; //break from outer for loop
1705                             } else {
1706                                     tstlbl += "&& ";
1707                                     for(j = 0; j < prefix.size(); j++) {
1708                                             tstlbl += prefix.get(j) + "->";
1709                                     }
1710                                     prefix.add(fd.getSafeSymbol());
1711                                     tstlbl += fd.getSafeSymbol() + " != NULL";
1712                             }
1713                     } else { /* if Index descriptor */
1714                             String indexstring = new String();
1715                             IndexDescriptor id = (IndexDescriptor) newdesc;
1716                             if(i == 0) {
1717                                     indexstring = generateTemp(fm, pp.base, lb);
1718                             } else {
1719                                     indexstring = ((FieldDescriptor)pp.getDescAt(i-1)).getSafeSymbol();
1720                             }
1721                             tstlbl += "&& ";
1722                             for(j = 0; j < prefix.size(); j++) {
1723                                     tstlbl += prefix.get(j) + "[";
1724                             }
1725                             indexstring += "[";
1726                             for(j = 0; j < id.tddesc.size(); j++) {
1727                                     tstlbl += generateTemp(fm, id.getTempDescAt(j), lb) + "+";
1728                                     indexstring += generateTemp(fm,id.getTempDescAt(j), lb) + "+";
1729                             }
1730                             tstlbl += id.offset.toString()+ "]";
1731                             indexstring += id.offset.toString()+ "]";
1732                             prefix. removeElementAt(prefix.size() -1);
1733                             prefix.add(indexstring);
1734                             tstlbl += " != NULL";
1735                     }
1736             }
1737     }
1738
1739     public void generateFlatGlobalConvNode(FlatMethod fm, LocalityBinding lb, FlatGlobalConvNode fgcn, PrintWriter output) {
1740             if (lb!=fgcn.getLocality())
1741                     return;
1742             /* Have to generate flat globalconv */
1743             if (fgcn.getMakePtr()) {
1744                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)transRead(trans, (unsigned int) "+generateTemp(fm, fgcn.getSrc(),lb)+");");
1745             } else {
1746                     /* Need to convert to OID */
1747                     output.println(generateTemp(fm, fgcn.getSrc(),lb)+"=(void *)COMPOID("+generateTemp(fm, fgcn.getSrc(),lb)+");");
1748             }
1749     }
1750
1751     public void generateFlatAtomicEnterNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicEnterNode faen, PrintWriter output) {
1752             /* Check to see if we need to generate code for this atomic */
1753             if (locality.getAtomic(lb).get(faen.getPrev(0)).intValue()>0)
1754                     return;
1755             /* Backup the temps. */
1756             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1757                     TempDescriptor tmp=tmpit.next();
1758                     output.println(generateTemp(fm, backuptable.get(tmp),lb)+"="+generateTemp(fm,tmp,lb)+";");
1759             }
1760             output.println("goto transstart"+faen.getIdentifier()+";");
1761
1762             /******* Print code to retry aborted transaction *******/
1763             output.println("transretry"+faen.getIdentifier()+":");
1764
1765             /* Restore temps */
1766             for(Iterator<TempDescriptor> tmpit=locality.getTemps(lb).get(faen).iterator();tmpit.hasNext();) {
1767                     TempDescriptor tmp=tmpit.next();
1768                     output.println(generateTemp(fm, tmp,lb)+"="+generateTemp(fm,backuptable.get(tmp),lb)+";");
1769             }
1770
1771             /********* Need to revert local object store ********/
1772             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1773
1774         output.println("while ("+revertptr+") {");
1775         output.println("struct ___Object___ * tmpptr;");
1776         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1777         output.println("REVERT_OBJ("+revertptr+");");
1778         output.println(revertptr+"=tmpptr;");
1779         output.println("}");
1780
1781         /******* Tell the runtime to start the transaction *******/
1782
1783         output.println("transstart"+faen.getIdentifier()+":");
1784         output.println("trans=transStart();");
1785     }
1786
1787     public void generateFlatAtomicExitNode(FlatMethod fm,  LocalityBinding lb, FlatAtomicExitNode faen, PrintWriter output) {
1788         /* Check to see if we need to generate code for this atomic */
1789         if (locality.getAtomic(lb).get(faen).intValue()>0)
1790             return;
1791         //store the revert list before we lose the transaction object
1792         String revertptr=generateTemp(fm, reverttable.get(lb),lb);
1793         output.println(revertptr+"=trans->revertlist;");
1794         output.println("if (transCommit(trans)) {");
1795         /* Transaction aborts if it returns true */
1796         output.println("goto transretry"+faen.getAtomicEnter().getIdentifier()+";");
1797         output.println("} else {");
1798         /* Need to commit local object store */
1799         output.println("while ("+revertptr+") {");
1800         output.println("struct ___Object___ * tmpptr;");
1801         output.println("tmpptr="+revertptr+"->"+nextobjstr+";");
1802         output.println("COMMIT_OBJ("+revertptr+");");
1803         output.println(revertptr+"=tmpptr;");
1804         output.println("}");
1805         output.println("}");
1806     }
1807
1808     private void generateFlatCheckNode(FlatMethod fm,  LocalityBinding lb, FlatCheckNode fcn, PrintWriter output) {
1809         if (state.CONSCHECK) {
1810             String specname=fcn.getSpec();
1811             String varname="repairstate___";
1812             output.println("{");
1813             output.println("struct "+specname+"_state * "+varname+"=allocate"+specname+"_state();");
1814
1815             TempDescriptor[] temps=fcn.getTemps();
1816             String[] vars=fcn.getVars();
1817             for(int i=0;i<temps.length;i++) {
1818                 output.println(varname+"->"+vars[i]+"=(unsigned int)"+generateTemp(fm, temps[i],lb)+";");
1819             }
1820
1821             output.println("if (doanalysis"+specname+"("+varname+")) {");
1822             output.println("free"+specname+"_state("+varname+");");
1823             output.println("} else {");
1824             output.println("/* Bad invariant */");
1825             output.println("free"+specname+"_state("+varname+");");
1826             output.println("abort_task();");
1827             output.println("}");
1828             output.println("}");
1829         }
1830     }
1831
1832     private void generateFlatCall(FlatMethod fm, LocalityBinding lb, FlatCall fc, PrintWriter output) {
1833         MethodDescriptor md=fc.getMethod();
1834         ParamsObject objectparams=(ParamsObject)paramstable.get(state.DSM?locality.getBinding(lb, fc):md);
1835         ClassDescriptor cn=md.getClassDesc();
1836         output.println("{");
1837         if (GENERATEPRECISEGC) {
1838             if (state.DSM) {
1839                 LocalityBinding fclb=locality.getBinding(lb, fc);
1840                 output.print("       struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1841             } else
1842                 output.print("       struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params __parameterlist__={");
1843
1844             output.print(objectparams.numPointers());
1845             output.print(", & "+localsprefix);
1846             if (fc.getThis()!=null) {
1847                 output.print(", ");
1848                 output.print("(struct "+md.getThis().getType().getSafeSymbol() +" *)"+ generateTemp(fm,fc.getThis(),lb));
1849             }
1850             for(int i=0;i<fc.numArgs();i++) {
1851                 Descriptor var=md.getParameter(i);
1852                 TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1853                 if (objectparams.isParamPtr(paramtemp)) {
1854                     TempDescriptor targ=fc.getArg(i);
1855                     output.print(", ");
1856                     TypeDescriptor td=md.getParamType(i);
1857                     if (td.isTag())
1858                         output.print("(struct "+(new TypeDescriptor(typeutil.getClass(TypeUtil.TagClass))).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1859                     else
1860                         output.print("(struct "+md.getParamType(i).getSafeSymbol()  +" *)"+generateTemp(fm, targ,lb));
1861                 }
1862             }
1863             output.println("};");
1864         }
1865         output.print("       ");
1866
1867
1868         if (fc.getReturnTemp()!=null)
1869             output.print(generateTemp(fm,fc.getReturnTemp(),lb)+"=");
1870
1871         /* Do we need to do virtual dispatch? */
1872         if (md.isStatic()||md.getReturnType()==null||singleCall(fc.getThis().getType().getClassDesc(),md)) {
1873             //no
1874             if (state.DSM) {
1875                 LocalityBinding fclb=locality.getBinding(lb, fc);
1876                 output.print(cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1877             } else {
1878                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor());
1879             }
1880         } else {
1881             //yes
1882             output.print("((");
1883             if (md.getReturnType().isClass()||md.getReturnType().isArray())
1884                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
1885             else
1886                 output.print(md.getReturnType().getSafeSymbol()+" ");
1887             output.print("(*)(");
1888
1889             boolean printcomma=false;
1890             if (GENERATEPRECISEGC) {
1891                 if (state.DSM) {
1892                     LocalityBinding fclb=locality.getBinding(lb, fc);
1893                     output.print("struct "+cn.getSafeSymbol()+fclb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1894                 } else
1895                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * ");
1896                 printcomma=true;
1897             }
1898
1899             for(int i=0;i<objectparams.numPrimitives();i++) {
1900                 TempDescriptor temp=objectparams.getPrimitive(i);
1901                 if (printcomma)
1902                     output.print(", ");
1903                 printcomma=true;
1904                 if (temp.getType().isClass()||temp.getType().isArray())
1905                     output.print("struct " + temp.getType().getSafeSymbol()+" * ");
1906                 else
1907                     output.print(temp.getType().getSafeSymbol());
1908             }
1909
1910             if (state.DSM) {
1911                 LocalityBinding fclb=locality.getBinding(lb, fc);
1912                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getLocalityNumber(fclb)+"])");
1913             } else
1914                 output.print("))virtualtable["+generateTemp(fm,fc.getThis(),lb)+"->type*"+maxcount+"+"+virtualcalls.getMethodNumber(md)+"])");
1915         }
1916
1917         output.print("(");
1918         boolean needcomma=false;
1919         if (GENERATEPRECISEGC) {
1920             output.print("&__parameterlist__");
1921             needcomma=true;
1922         }
1923
1924         if (state.DSM&&locality.getBinding(lb,fc).isAtomic()) {
1925             if (needcomma)
1926                 output.print(",");
1927             output.print("trans");
1928             needcomma=true;
1929         }
1930
1931         if (!GENERATEPRECISEGC) {
1932             if (fc.getThis()!=null) {
1933                 TypeDescriptor ptd=md.getThis().getType();
1934                 if (needcomma)
1935                     output.print(",");
1936                 if (ptd.isClass()&&!ptd.isArray())
1937                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1938                 output.print(generateTemp(fm,fc.getThis(),lb));
1939                 needcomma=true;
1940             }
1941         }
1942
1943         for(int i=0;i<fc.numArgs();i++) {
1944             Descriptor var=md.getParameter(i);
1945             TempDescriptor paramtemp=(TempDescriptor)temptovar.get(var);
1946             if (objectparams.isParamPrim(paramtemp)) {
1947                 TempDescriptor targ=fc.getArg(i);
1948                 if (needcomma)
1949                     output.print(", ");
1950
1951                 TypeDescriptor ptd=md.getParamType(i);
1952                 if (ptd.isClass()&&!ptd.isArray())
1953                     output.print("(struct "+ptd.getSafeSymbol()+" *) ");
1954                 output.print(generateTemp(fm, targ,lb));
1955                 needcomma=true;
1956             }
1957         }
1958         output.println(");");
1959         output.println("   }");
1960     }
1961
1962     private boolean singleCall(ClassDescriptor thiscd, MethodDescriptor md) {
1963         Set subclasses=typeutil.getSubClasses(thiscd);
1964         if (subclasses==null)
1965             return true;
1966         for(Iterator classit=subclasses.iterator();classit.hasNext();) {
1967             ClassDescriptor cd=(ClassDescriptor)classit.next();
1968             Set possiblematches=cd.getMethodTable().getSet(md.getSymbol());
1969             for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
1970                 MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
1971                 if (md.matches(matchmd))
1972                     return false;
1973             }
1974         }
1975         return true;
1976     }
1977
1978     private void generateFlatFieldNode(FlatMethod fm, LocalityBinding lb, FlatFieldNode ffn, PrintWriter output) {
1979         if (state.DSM) {
1980             Integer status=locality.getNodePreTempInfo(lb,ffn).get(ffn.getSrc());
1981             if (status==LocalityAnalysis.GLOBAL) {
1982                 String field=ffn.getField().getSafeSymbol();
1983                 String src=generateTemp(fm, ffn.getSrc(),lb);
1984                 String dst=generateTemp(fm, ffn.getDst(),lb);
1985
1986                 if (ffn.getField().getType().isPtr()) {
1987
1988                     //TODO: Uncomment this when we have runtime support
1989                     //if (ffn.getSrc()==ffn.getDst()) {
1990                     //output.println("{");
1991                     //output.println("void * temp="+src+";");
1992                     //output.println("if (temp&0x1) {");
1993                     //output.println("temp=(void *) transRead(trans, (unsigned int) temp);");
1994                     //output.println(src+"->"+field+"="+temp+";");
1995                     //output.println("}");
1996                     //output.println(dst+"=temp;");
1997                     //output.println("}");
1998                     //} else {
1999                     output.println(dst+"="+ src +"->"+field+ ";");
2000                     //output.println("if ("+dst+"&0x1) {");
2001                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
2002                     //output.println(src+"->"+field+"="+src+"->"+field+";");
2003                     //output.println("}");
2004                     //}
2005                 } else {
2006                     output.println(dst+"="+ src+"->"+field+";");
2007                 }
2008             } else if (status==LocalityAnalysis.LOCAL) {
2009                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2010             } else if (status==LocalityAnalysis.EITHER) {
2011                 //Code is reading from a null pointer
2012                 output.println("if ("+generateTemp(fm, ffn.getSrc(),lb)+") {");
2013                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2014                 //This should throw a suitable null pointer error
2015                 output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2016             } else
2017                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2018         } else
2019             output.println(generateTemp(fm, ffn.getDst(),lb)+"="+ generateTemp(fm,ffn.getSrc(),lb)+"->"+ ffn.getField().getSafeSymbol()+";");
2020     }
2021
2022
2023     private void generateFlatSetFieldNode(FlatMethod fm, LocalityBinding lb, FlatSetFieldNode fsfn, PrintWriter output) {
2024         if (fsfn.getField().getSymbol().equals("length")&&fsfn.getDst().getType().isArray())
2025             throw new Error("Can't set array length");
2026         if (state.DSM && locality.getAtomic(lb).get(fsfn).intValue()>0) {
2027             Integer statussrc=locality.getNodePreTempInfo(lb,fsfn).get(fsfn.getSrc());
2028             Integer statusdst=locality.getNodeTempInfo(lb).get(fsfn).get(fsfn.getDst());
2029             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2030
2031             String src=generateTemp(fm,fsfn.getSrc(),lb);
2032             String dst=generateTemp(fm,fsfn.getDst(),lb);
2033             if (srcglobal) {
2034                 output.println("{");
2035                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2036             }
2037             if (statusdst.equals(LocalityAnalysis.GLOBAL)) {
2038                 String glbdst=dst;
2039                 //mark it dirty
2040                 output.println("*((unsigned int *)&("+dst+"->___localcopy___))|=DIRTY;");
2041                 if (srcglobal) {
2042                     output.println("*((unsigned int *)&("+glbdst+"->"+ fsfn.getField().getSafeSymbol()+"))=srcoid;");
2043                 } else
2044                     output.println(glbdst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2045             } else if (statusdst.equals(LocalityAnalysis.LOCAL)) {
2046                 /** Check if we need to copy */
2047                 output.println("if(!"+dst+"->"+localcopystr+") {");
2048                 /* Link object into list */
2049                 String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2050                 output.println(revertptr+"=trans->revertlist;");
2051                 if (GENERATEPRECISEGC)
2052                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
2053                 else
2054                     output.println("COPY_OBJ("+dst+");");
2055                 output.println(dst+"->"+nextobjstr+"="+revertptr+";");
2056                 output.println("trans->revertlist=(struct ___Object___ *)"+dst+";");
2057                 output.println("}");
2058                 if (srcglobal)
2059                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2060                 else
2061                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2062             } else if (statusdst.equals(LocalityAnalysis.EITHER)) {
2063                 //writing to a null...bad
2064                 output.println("if ("+dst+") {");
2065                 output.println("printf(\"BIG ERROR 2\\n\");exit(-1);}");
2066                 if (srcglobal)
2067                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"=srcoid;");
2068                 else
2069                     output.println(dst+"->"+ fsfn.getField().getSafeSymbol()+"="+ src+";");
2070             }
2071             if (srcglobal) {
2072                 output.println("}");
2073             }
2074         } else {
2075             output.println(generateTemp(fm, fsfn.getDst(),lb)+"->"+ fsfn.getField().getSafeSymbol()+"="+ generateTemp(fm,fsfn.getSrc(),lb)+";");
2076         }
2077     }
2078
2079     private void generateFlatElementNode(FlatMethod fm, LocalityBinding lb, FlatElementNode fen, PrintWriter output) {
2080         TypeDescriptor elementtype=fen.getSrc().getType().dereference();
2081         String type="";
2082
2083         if (elementtype.isArray()||elementtype.isClass())
2084             type="void *";
2085         else
2086             type=elementtype.getSafeSymbol()+" ";
2087
2088         if (fen.needsBoundsCheck()) {
2089             output.println("if ("+generateTemp(fm, fen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fen.getIndex(),lb)+" >= "+generateTemp(fm,fen.getSrc(),lb) + "->___length___)");
2090             output.println("failedboundschk();");
2091         }
2092         if (state.DSM) {
2093             Integer status=locality.getNodePreTempInfo(lb,fen).get(fen.getSrc());
2094             if (status==LocalityAnalysis.GLOBAL) {
2095                 String dst=generateTemp(fm, fen.getDst(),lb);
2096
2097                 if (elementtype.isPtr()) {
2098                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2099                     output.println(dst+"=(void *) transRead(trans, (unsigned int) "+dst+");");
2100                 } else {
2101                     output.println(dst +"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2102                 }
2103             } else if (status==LocalityAnalysis.LOCAL) {
2104                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2105             } else if (status==LocalityAnalysis.EITHER) {
2106                 //Code is reading from a null pointer
2107                 output.println("if ("+generateTemp(fm, fen.getSrc(),lb)+") {");
2108                 output.println("printf(\"BIG ERROR\\n\");exit(-1);}");
2109                 //This should throw a suitable null pointer error
2110                 output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2111             } else
2112                 throw new Error("Read from non-global/non-local in:"+lb.getExplanation());
2113         } else {
2114             output.println(generateTemp(fm, fen.getDst(),lb)+"=(("+ type+"*)(((char *) &("+ generateTemp(fm,fen.getSrc(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fen.getIndex(),lb)+"];");
2115         }
2116     }
2117
2118     private void generateFlatSetElementNode(FlatMethod fm, LocalityBinding lb, FlatSetElementNode fsen, PrintWriter output) {
2119         //TODO: need dynamic check to make sure this assignment is actually legal
2120         //Because Object[] could actually be something more specific...ie. Integer[]
2121
2122         TypeDescriptor elementtype=fsen.getDst().getType().dereference();
2123         String type="";
2124
2125         if (elementtype.isArray()||elementtype.isClass())
2126             type="void *";
2127         else
2128             type=elementtype.getSafeSymbol()+" ";
2129
2130
2131         if (fsen.needsBoundsCheck()) {
2132             output.println("if ("+generateTemp(fm, fsen.getIndex(),lb)+"< 0 || "+generateTemp(fm, fsen.getIndex(),lb)+" >= "+generateTemp(fm,fsen.getDst(),lb) + "->___length___)");
2133             output.println("failedboundschk();");
2134         }
2135
2136         if (state.DSM && locality.getAtomic(lb).get(fsen).intValue()>0) {
2137             Integer statussrc=locality.getNodePreTempInfo(lb,fsen).get(fsen.getSrc());
2138             Integer statusdst=locality.getNodePreTempInfo(lb,fsen).get(fsen.getDst());
2139             boolean srcglobal=statussrc==LocalityAnalysis.GLOBAL;
2140             boolean dstglobal=statusdst==LocalityAnalysis.GLOBAL;
2141             boolean dstlocal=statusdst==LocalityAnalysis.LOCAL;
2142
2143             if (dstglobal) {
2144                 output.println("*((unsigned int *)&("+generateTemp(fm,fsen.getDst(),lb)+"->___localcopy___))|=DIRTY;");
2145             } else if (dstlocal) {
2146                 /** Check if we need to copy */
2147                 String dst=generateTemp(fm, fsen.getDst(),lb);
2148                 output.println("if(!"+dst+"->"+localcopystr+") {");
2149                 /* Link object into list */
2150                 String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2151                 output.println(revertptr+"=trans->revertlist;");
2152                 if (GENERATEPRECISEGC)
2153                     output.println("COPY_OBJ((struct garbagelist *)&"+localsprefix+",(struct ___Object___ *)"+dst+");");
2154                 else
2155                     output.println("COPY_OBJ("+dst+");");
2156                 output.println(dst+"->"+nextobjstr+"="+revertptr+";");
2157
2158                 output.println("trans->revertlist=(struct ___Object___ *)"+dst+";");
2159                 output.println("}");
2160             } else throw new Error("Unknown array type");
2161             if (srcglobal) {
2162                 output.println("{");
2163                 String src=generateTemp(fm, fsen.getSrc(), lb);
2164                 output.println("int srcoid=(int)"+src+"->"+oidstr+";");
2165                 output.println("((int*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]=srcoid;");
2166                 output.println("}");
2167             } else {
2168                 output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2169             }
2170         } else
2171             output.println("(("+type +"*)(((char *) &("+ generateTemp(fm,fsen.getDst(),lb)+"->___length___))+sizeof(int)))["+generateTemp(fm, fsen.getIndex(),lb)+"]="+generateTemp(fm,fsen.getSrc(),lb)+";");
2172     }
2173
2174     private void generateFlatNew(FlatMethod fm, LocalityBinding lb, FlatNew fn, PrintWriter output) {
2175         if (state.DSM && locality.getAtomic(lb).get(fn).intValue()>0&&!fn.isGlobal()) {
2176             //Stash pointer in case of GC
2177             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2178             output.println(revertptr+"=trans->revertlist;");
2179         }
2180         if (fn.getType().isArray()) {
2181             int arrayid=state.getArrayNumber(fn.getType())+state.numClasses();
2182             if (fn.isGlobal()) {
2183                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarrayglobal(trans, "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2184             } else if (GENERATEPRECISEGC) {
2185                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray(&"+localsprefix+", "+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2186             } else {
2187                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newarray("+arrayid+", "+generateTemp(fm, fn.getSize(),lb)+");");
2188             }
2189         } else {
2190             if (fn.isGlobal()) {
2191                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_newglobal(trans, "+fn.getType().getClassDesc().getId()+");");
2192             } else if (GENERATEPRECISEGC) {
2193                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new(&"+localsprefix+", "+fn.getType().getClassDesc().getId()+");");
2194             } else {
2195                 output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_new("+fn.getType().getClassDesc().getId()+");");
2196             }
2197         }
2198         if (state.DSM && locality.getAtomic(lb).get(fn).intValue()>0&&!fn.isGlobal()) {
2199             String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2200             output.println("trans->revertlist="+revertptr+";");
2201         }
2202     }
2203
2204     private void generateFlatTagDeclaration(FlatMethod fm, LocalityBinding lb, FlatTagDeclaration fn, PrintWriter output) {
2205         if (GENERATEPRECISEGC) {
2206             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag(&"+localsprefix+", "+state.getTagId(fn.getType())+");");
2207         } else {
2208             output.println(generateTemp(fm,fn.getDst(),lb)+"=allocate_tag("+state.getTagId(fn.getType())+");");
2209         }
2210     }
2211
2212     private void generateFlatOpNode(FlatMethod fm, LocalityBinding lb, FlatOpNode fon, PrintWriter output) {
2213         if (fon.getRight()!=null) {
2214             if (fon.getOp().getOp()==Operation.URIGHTSHIFT) {
2215                 if (fon.getLeft().getType().isLong())
2216                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned long long)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2217                 else
2218                     output.println(generateTemp(fm, fon.getDest(),lb)+" = ((unsigned int)"+generateTemp(fm, fon.getLeft(),lb)+")>>"+generateTemp(fm,fon.getRight(),lb)+";");
2219
2220             } else
2221                 output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+fon.getOp().toString()+generateTemp(fm,fon.getRight(),lb)+";");
2222         } else if (fon.getOp().getOp()==Operation.ASSIGN)
2223             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2224         else if (fon.getOp().getOp()==Operation.UNARYPLUS)
2225             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+";");
2226         else if (fon.getOp().getOp()==Operation.UNARYMINUS)
2227             output.println(generateTemp(fm, fon.getDest(),lb)+" = -"+generateTemp(fm, fon.getLeft(),lb)+";");
2228         else if (fon.getOp().getOp()==Operation.LOGIC_NOT)
2229             output.println(generateTemp(fm, fon.getDest(),lb)+" = !"+generateTemp(fm, fon.getLeft(),lb)+";");
2230         else if (fon.getOp().getOp()==Operation.COMP)
2231             output.println(generateTemp(fm, fon.getDest(),lb)+" = ~"+generateTemp(fm, fon.getLeft(),lb)+";");
2232         else if (fon.getOp().getOp()==Operation.ISAVAILABLE) {
2233             output.println(generateTemp(fm, fon.getDest(),lb)+" = "+generateTemp(fm, fon.getLeft(),lb)+"->fses==NULL;");
2234         } else
2235             output.println(generateTemp(fm, fon.getDest(),lb)+fon.getOp().toString()+generateTemp(fm, fon.getLeft(),lb)+";");
2236     }
2237
2238     private void generateFlatCastNode(FlatMethod fm, LocalityBinding lb, FlatCastNode fcn, PrintWriter output) {
2239         /* TODO: Do type check here */
2240         if (fcn.getType().isArray()) {
2241             throw new Error();
2242         } else if (fcn.getType().isClass())
2243             output.println(generateTemp(fm,fcn.getDst(),lb)+"=(struct "+fcn.getType().getSafeSymbol()+" *)"+generateTemp(fm,fcn.getSrc(),lb)+";");
2244         else
2245             output.println(generateTemp(fm,fcn.getDst(),lb)+"=("+fcn.getType().getSafeSymbol()+")"+generateTemp(fm,fcn.getSrc(),lb)+";");
2246     }
2247
2248     private void generateFlatLiteralNode(FlatMethod fm, LocalityBinding lb, FlatLiteralNode fln, PrintWriter output) {
2249         if (fln.getValue()==null)
2250             output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2251         else if (fln.getType().getSymbol().equals(TypeUtil.StringClass)) {
2252             if (GENERATEPRECISEGC) {
2253                 if (state.DSM && locality.getAtomic(lb).get(fln).intValue()>0) {
2254                     //Stash pointer in case of GC
2255                     String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2256                     output.println(revertptr+"=trans->revertlist;");
2257                 }
2258                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(&"+localsprefix+", \""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2259                 if (state.DSM && locality.getAtomic(lb).get(fln).intValue()>0) {
2260                     //Stash pointer in case of GC
2261                     String revertptr=generateTemp(fm, reverttable.get(lb),lb);
2262                     output.println("trans->revertlist="+revertptr+";");
2263                 }
2264             } else {
2265                 output.println(generateTemp(fm, fln.getDst(),lb)+"=NewString(\""+FlatLiteralNode.escapeString((String)fln.getValue())+"\","+((String)fln.getValue()).length()+");");
2266             }
2267         } else if (fln.getType().isBoolean()) {
2268             if (((Boolean)fln.getValue()).booleanValue())
2269                 output.println(generateTemp(fm, fln.getDst(),lb)+"=1;");
2270             else
2271                 output.println(generateTemp(fm, fln.getDst(),lb)+"=0;");
2272         } else if (fln.getType().isChar()) {
2273             String st=FlatLiteralNode.escapeString(fln.getValue().toString());
2274             output.println(generateTemp(fm, fln.getDst(),lb)+"='"+st+"';");
2275         } else if (fln.getType().isLong()) {
2276             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+"LL;");
2277         } else
2278             output.println(generateTemp(fm, fln.getDst(),lb)+"="+fln.getValue()+";");
2279     }
2280
2281     private void generateFlatReturnNode(FlatMethod fm, LocalityBinding lb, FlatReturnNode frn, PrintWriter output) {
2282         if (frn.getReturnTemp()!=null) {
2283             if (frn.getReturnTemp().getType().isPtr())
2284                 output.println("return (struct "+fm.getMethod().getReturnType().getSafeSymbol()+"*)"+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2285             else
2286                 output.println("return "+generateTemp(fm, frn.getReturnTemp(), lb)+";");
2287         } else
2288             output.println("return;");
2289     }
2290
2291     private void generateFlatCondBranch(FlatMethod fm, LocalityBinding lb, FlatCondBranch fcb, String label, PrintWriter output) {
2292         output.println("if (!"+generateTemp(fm, fcb.getTest(),lb)+") goto "+label+";");
2293     }
2294
2295     /** This method generates header information for the method or
2296      * task referenced by the Descriptor des. */
2297
2298     private void generateHeader(FlatMethod fm, LocalityBinding lb, Descriptor des, PrintWriter output) {
2299         /* Print header */
2300         ParamsObject objectparams=(ParamsObject)paramstable.get(lb!=null?lb:des);
2301         MethodDescriptor md=null;
2302         TaskDescriptor task=null;
2303         if (des instanceof MethodDescriptor)
2304             md=(MethodDescriptor) des;
2305         else
2306             task=(TaskDescriptor) des;
2307
2308         ClassDescriptor cn=md!=null?md.getClassDesc():null;
2309
2310         if (md!=null&&md.getReturnType()!=null) {
2311             if (md.getReturnType().isClass()||md.getReturnType().isArray())
2312                 output.print("struct " + md.getReturnType().getSafeSymbol()+" * ");
2313             else
2314                 output.print(md.getReturnType().getSafeSymbol()+" ");
2315         } else
2316             //catch the constructor case
2317             output.print("void ");
2318         if (md!=null) {
2319             if (state.DSM) {
2320                 output.print(cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2321             } else
2322                 output.print(cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"(");
2323         } else
2324             output.print(task.getSafeSymbol()+"(");
2325
2326         boolean printcomma=false;
2327         if (GENERATEPRECISEGC) {
2328             if (md!=null) {
2329                 if (state.DSM) {
2330                     output.print("struct "+cn.getSafeSymbol()+lb.getSignature()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2331                 } else
2332                     output.print("struct "+cn.getSafeSymbol()+md.getSafeSymbol()+"_"+md.getSafeMethodDescriptor()+"_params * "+paramsprefix);
2333             } else
2334                 output.print("struct "+task.getSafeSymbol()+"_params * "+paramsprefix);
2335             printcomma=true;
2336         }
2337
2338         if (state.DSM&&lb.isAtomic()) {
2339             if (printcomma)
2340                 output.print(", ");
2341             output.print("transrecord_t * trans");
2342             printcomma=true;
2343         }
2344
2345         if (md!=null) {
2346             /* Method */
2347             for(int i=0;i<objectparams.numPrimitives();i++) {
2348                 TempDescriptor temp=objectparams.getPrimitive(i);
2349                 if (printcomma)
2350                     output.print(", ");
2351                 printcomma=true;
2352                 if (temp.getType().isClass()||temp.getType().isArray())
2353                     output.print("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol());
2354                 else
2355                     output.print(temp.getType().getSafeSymbol()+" "+temp.getSafeSymbol());
2356             }
2357             output.println(") {");
2358         } else if (!GENERATEPRECISEGC) {
2359             /* Imprecise Task */
2360             output.println("void * parameterarray[]) {");
2361             /* Unpack variables */
2362             for(int i=0;i<objectparams.numPrimitives();i++) {
2363                 TempDescriptor temp=objectparams.getPrimitive(i);
2364                 output.println("struct "+temp.getType().getSafeSymbol()+" * "+temp.getSafeSymbol()+"=parameterarray["+i+"];");
2365             }
2366             for(int i=0;i<fm.numTags();i++) {
2367                 TempDescriptor temp=fm.getTag(i);
2368                 int offset=i+objectparams.numPrimitives();
2369                 output.println("struct ___TagDescriptor___ * "+temp.getSafeSymbol()+"=parameterarray["+offset+"];");
2370             }
2371
2372             if ((objectparams.numPrimitives()+fm.numTags())>maxtaskparams)
2373                 maxtaskparams=objectparams.numPrimitives()+fm.numTags();
2374         } else output.println(") {");
2375     }
2376
2377     public void generateFlatFlagActionNode(FlatMethod fm, LocalityBinding lb, FlatFlagActionNode ffan, PrintWriter output) {
2378         output.println("/* FlatFlagActionNode */");
2379
2380
2381         /* Process tag changes */
2382         Relation tagsettable=new Relation();
2383         Relation tagcleartable=new Relation();
2384
2385         Iterator tagsit=ffan.getTempTagPairs();
2386         while (tagsit.hasNext()) {
2387             TempTagPair ttp=(TempTagPair) tagsit.next();
2388             TempDescriptor objtmp=ttp.getTemp();
2389             TagDescriptor tag=ttp.getTag();
2390             TempDescriptor tagtmp=ttp.getTagTemp();
2391             boolean tagstatus=ffan.getTagChange(ttp);
2392             if (tagstatus) {
2393                 tagsettable.put(objtmp, tagtmp);
2394             } else {
2395                 tagcleartable.put(objtmp, tagtmp);
2396             }
2397         }
2398
2399
2400         Hashtable flagandtable=new Hashtable();
2401         Hashtable flagortable=new Hashtable();
2402
2403         /* Process flag changes */
2404         Iterator flagsit=ffan.getTempFlagPairs();
2405         while(flagsit.hasNext()) {
2406             TempFlagPair tfp=(TempFlagPair)flagsit.next();
2407             TempDescriptor temp=tfp.getTemp();
2408             Hashtable flagtable=(Hashtable)flagorder.get(temp.getType().getClassDesc());
2409             FlagDescriptor flag=tfp.getFlag();
2410             if (flag==null) {
2411                 //Newly allocate objects that don't set any flags case
2412                 if (flagortable.containsKey(temp)) {
2413                     throw new Error();
2414                 }
2415                 int mask=0;
2416                 flagortable.put(temp,new Integer(mask));
2417             } else {
2418                 int flagid=1<<((Integer)flagtable.get(flag)).intValue();
2419                 boolean flagstatus=ffan.getFlagChange(tfp);
2420                 if (flagstatus) {
2421                     int mask=0;
2422                     if (flagortable.containsKey(temp)) {
2423                         mask=((Integer)flagortable.get(temp)).intValue();
2424                     }
2425                     mask|=flagid;
2426                     flagortable.put(temp,new Integer(mask));
2427                 } else {
2428                     int mask=0xFFFFFFFF;
2429                     if (flagandtable.containsKey(temp)) {
2430                         mask=((Integer)flagandtable.get(temp)).intValue();
2431                     }
2432                     mask&=(0xFFFFFFFF^flagid);
2433                     flagandtable.put(temp,new Integer(mask));
2434                 }
2435             }
2436         }
2437
2438
2439         HashSet flagtagset=new HashSet();
2440         flagtagset.addAll(flagortable.keySet());
2441         flagtagset.addAll(flagandtable.keySet());
2442         flagtagset.addAll(tagsettable.keySet());
2443         flagtagset.addAll(tagcleartable.keySet());
2444
2445         Iterator ftit=flagtagset.iterator();
2446         while(ftit.hasNext()) {
2447             TempDescriptor temp=(TempDescriptor)ftit.next();
2448
2449
2450             Set tagtmps=tagcleartable.get(temp);
2451             if (tagtmps!=null) {
2452                 Iterator tagit=tagtmps.iterator();
2453                 while(tagit.hasNext()) {
2454                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2455                     if (GENERATEPRECISEGC)
2456                         output.println("tagclear(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2457                     else
2458                         output.println("tagclear((struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2459                 }
2460             }
2461
2462             tagtmps=tagsettable.get(temp);
2463             if (tagtmps!=null) {
2464                 Iterator tagit=tagtmps.iterator();
2465                 while(tagit.hasNext()) {
2466                     TempDescriptor tagtmp=(TempDescriptor)tagit.next();
2467                     if (GENERATEPRECISEGC)
2468                         output.println("tagset(&"+localsprefix+", (struct ___Object___ *)"+generateTemp(fm, temp,lb)+", "+generateTemp(fm,tagtmp,lb)+");");
2469                     else
2470                         output.println("tagset((struct ___Object___ *)"+generateTemp(fm, temp, lb)+", "+generateTemp(fm,tagtmp, lb)+");");
2471                 }
2472             }
2473
2474             int ormask=0;
2475             int andmask=0xFFFFFFF;
2476
2477             if (flagortable.containsKey(temp))
2478                 ormask=((Integer)flagortable.get(temp)).intValue();
2479             if (flagandtable.containsKey(temp))
2480                 andmask=((Integer)flagandtable.get(temp)).intValue();
2481             if (ffan.getTaskType()==FlatFlagActionNode.NEWOBJECT) {
2482                 output.println("flagorandinit("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2483             } else {
2484                 output.println("flagorand("+generateTemp(fm, temp, lb)+", 0x"+Integer.toHexString(ormask)+", 0x"+Integer.toHexString(andmask)+");");
2485             }
2486         }
2487     }
2488
2489     void generateOptionalHeader(PrintWriter headers) {
2490
2491          //GENERATE HEADERS
2492          headers.println("#include \"task.h\"\n\n");
2493          headers.println("#ifndef _OPTIONAL_STRUCT_");
2494          headers.println("#define _OPTIONAL_STRUCT_");
2495
2496          //STRUCT PREDICATEMEMBER
2497          headers.println("struct predicatemember{");
2498          headers.println("int type;");
2499          headers.println("int numdnfterms;");
2500          headers.println("int * flags;");
2501          headers.println("int numtags;");
2502          headers.println("int * tags;\n};\n\n");
2503
2504          //STRUCT OPTIONALTASKDESCRIPTOR
2505          headers.println("struct optionaltaskdescriptor{");
2506          headers.println("struct taskdescriptor * task;");
2507          headers.println("int index;");
2508          headers.println("int numenterflags;");
2509          headers.println("int * enterflags;");
2510          headers.println("int numpredicatemembers;");
2511          headers.println("struct predicatemember ** predicatememberarray;");
2512          headers.println("};\n\n");
2513
2514          //STRUCT TASKFAILURE
2515          headers.println("struct taskfailure {");
2516          headers.println("struct taskdescriptor * task;");
2517          headers.println("int index;");
2518          headers.println("int numoptionaltaskdescriptors;");
2519          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2520
2521          //STRUCT FSANALYSISWRAPPER
2522          headers.println("struct fsanalysiswrapper{");
2523          headers.println("int  flags;");
2524          headers.println("int numtags;");
2525          headers.println("int * tags;");
2526          headers.println("int numtaskfailures;");
2527          headers.println("struct taskfailure ** taskfailurearray;");
2528          headers.println("int numoptionaltaskdescriptors;");
2529          headers.println("struct optionaltaskdescriptor ** optionaltaskdescriptorarray;\n};\n\n");
2530
2531          //STRUCT CLASSANALYSISWRAPPER
2532          headers.println("struct classanalysiswrapper{");
2533          headers.println("int type;");
2534          headers.println("int numotd;");
2535          headers.println("struct optionaltaskdescriptor ** otdarray;");
2536          headers.println("int numfsanalysiswrappers;");
2537          headers.println("struct fsanalysiswrapper ** fsanalysiswrapperarray;\n};");
2538
2539          headers.println("extern struct classanalysiswrapper * classanalysiswrapperarray[];");
2540
2541          Iterator taskit=state.getTaskSymbolTable().getDescriptorsIterator();
2542          while(taskit.hasNext()) {
2543              TaskDescriptor td=(TaskDescriptor)taskit.next();
2544              headers.println("extern struct taskdescriptor task_"+td.getSafeSymbol()+";");
2545          }
2546
2547     }
2548
2549     //CHECK OVER THIS -- THERE COULD BE SOME ERRORS HERE
2550     int generateOptionalPredicate(Predicate predicate, OptionalTaskDescriptor otd, ClassDescriptor cdtemp, PrintWriter output) {
2551         int predicateindex = 0;
2552         //iterate through the classes concerned by the predicate
2553         Set c_vard = predicate.vardescriptors;
2554         Hashtable<TempDescriptor, Integer> slotnumber=new Hashtable<TempDescriptor, Integer>();
2555         int current_slot=0;
2556
2557         for(Iterator vard_it = c_vard.iterator(); vard_it.hasNext();){
2558             VarDescriptor vard = (VarDescriptor)vard_it.next();
2559             TypeDescriptor typed = vard.getType();
2560
2561             //generate for flags
2562             HashSet fen_hashset = predicate.flags.get(vard.getSymbol());
2563             output.println("int predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2564             int numberterms=0;
2565             if (fen_hashset!=null){
2566                 for (Iterator fen_it = fen_hashset.iterator(); fen_it.hasNext();){
2567                     FlagExpressionNode fen = (FlagExpressionNode)fen_it.next();
2568                     if (fen!=null) {
2569                         DNFFlag dflag=fen.getDNF();
2570                         numberterms+=dflag.size();
2571
2572                         Hashtable flags=(Hashtable)flagorder.get(typed.getClassDesc());
2573
2574                         for(int j=0;j<dflag.size();j++) {
2575                             if (j!=0)
2576                                 output.println(",");
2577                             Vector term=dflag.get(j);
2578                             int andmask=0;
2579                             int checkmask=0;
2580                             for(int k=0;k<term.size();k++) {
2581                                 DNFFlagAtom dfa=(DNFFlagAtom)term.get(k);
2582                                 FlagDescriptor fd=dfa.getFlag();
2583                                 boolean negated=dfa.getNegated();
2584                                 int flagid=1<<((Integer)flags.get(fd)).intValue();
2585                                 andmask|=flagid;
2586                                 if (!negated)
2587                                     checkmask|=flagid;
2588                             }
2589                             output.print("/*andmask*/0x"+Integer.toHexString(andmask)+", /*checkmask*/0x"+Integer.toHexString(checkmask));
2590                         }
2591                     }
2592                 }
2593             }
2594             output.println("};\n");
2595
2596             //generate for tags
2597             TagExpressionList tagel = predicate.tags.get(vard.getSymbol());
2598             output.println("int predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2599             int numtags = 0;
2600             if (tagel!=null){
2601                 for(int j=0;j<tagel.numTags();j++) {
2602                     if (j!=0)
2603                         output.println(",");
2604                     TempDescriptor tmp=tagel.getTemp(j);
2605                     if (!slotnumber.containsKey(tmp)) {
2606                         Integer slotint=new Integer(current_slot++);
2607                         slotnumber.put(tmp,slotint);
2608                     }
2609                     int slot=slotnumber.get(tmp).intValue();
2610                     output.println("/* slot */"+ slot+", /*tagid*/"+state.getTagId(tmp.getTag()));
2611                 }
2612                 numtags = tagel.numTags();
2613             }
2614             output.println("};");
2615
2616             //store the result into a predicatemember struct
2617             output.println("struct predicatemember predicatemember_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2618             output.println("/*type*/"+typed.getClassDesc().getId()+",");
2619             output.println("/* number of dnf terms */"+numberterms+",");
2620             output.println("predicateflags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2621             output.println("/* number of tag */"+numtags+",");
2622             output.println("predicatetags_"+predicateindex+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2623             output.println("};\n");
2624             predicateindex++;
2625         }
2626
2627
2628         //generate an array that stores the entire predicate
2629         output.println("struct predicatemember * predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2630         for( int j = 0; j<predicateindex; j++){
2631             if( j != predicateindex-1)output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2632             else output.println("&predicatemember_"+j+"_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2633         }
2634         output.println("};\n");
2635         return predicateindex;
2636     }
2637
2638
2639      void generateOptionalArrays(PrintWriter output, PrintWriter headers, Hashtable<ClassDescriptor, Hashtable<FlagState, Set<OptionalTaskDescriptor>>> safeexecution, Hashtable optionaltaskdescriptors) {
2640          generateOptionalHeader(headers);
2641          //GENERATE STRUCTS
2642          output.println("#include \"optionalstruct.h\"\n\n");
2643          output.println("#include \"stdlib.h\"\n");
2644
2645          HashSet processedcd = new HashSet();
2646          int maxotd=0;
2647          Enumeration e = safeexecution.keys();
2648          while (e.hasMoreElements()) {
2649              int numotd=0;
2650              //get the class
2651              ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
2652              Hashtable flaginfo=(Hashtable)flagorder.get(cdtemp);//will be used several times
2653
2654              //Generate the struct of optionals
2655              Collection c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2656              numotd = c_otd.size();
2657              if(maxotd<numotd) maxotd = numotd;
2658              if( !c_otd.isEmpty() ){
2659                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2660                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2661
2662                      //generate the int arrays for the predicate
2663                      Predicate predicate = otd.predicate;
2664                      int predicateindex = generateOptionalPredicate(predicate, otd, cdtemp, output);
2665                      TreeSet<Integer> fsset=new TreeSet<Integer>();
2666                      //iterate through possible FSes corresponding to
2667                      //the state when entering
2668
2669                      for(Iterator fses = otd.enterflagstates.iterator(); fses.hasNext();){
2670                          FlagState fs = (FlagState)fses.next();
2671                          int flagid=0;
2672                          for(Iterator flags = fs.getFlags(); flags.hasNext();){
2673                              FlagDescriptor flagd = (FlagDescriptor)flags.next();
2674                              int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2675                              flagid|=id;
2676                          }
2677                          fsset.add(new Integer(flagid));
2678                          //tag information not needed because tag
2679                          //changes are not tolerated.
2680                      }
2681
2682                      output.println("int enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"[]={");
2683                      boolean needcomma=false;
2684                      for(Iterator<Integer> it=fsset.iterator();it.hasNext();) {
2685                          if(needcomma)
2686                              output.print(", ");
2687                          output.println(it.next());
2688                      }
2689
2690                      output.println("};\n");
2691
2692
2693                      //generate optionaltaskdescriptor that actually
2694                      //includes exit fses, predicate and the task
2695                      //concerned
2696                      output.println("struct optionaltaskdescriptor optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+"={");
2697                      output.println("&task_"+otd.td.getSafeSymbol()+",");
2698                      output.println("/*index*/"+otd.getIndex()+",");
2699                      output.println("/*number of enter flags*/"+fsset.size()+",");
2700                      output.println("enterflag_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2701                      output.println("/*number of members */"+predicateindex+",");
2702                      output.println("predicatememberarray_OTD"+otd.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2703                      output.println("};\n");
2704                  }
2705              } else
2706                  continue;
2707              // if there are no optionals, there is no need to build the rest of the struct
2708
2709              output.println("struct optionaltaskdescriptor * otdarray"+cdtemp.getSafeSymbol()+"[]={");
2710              c_otd = ((Hashtable)optionaltaskdescriptors.get(cdtemp)).values();
2711              if( !c_otd.isEmpty() ){
2712                  boolean needcomma=false;
2713                  for(Iterator otd_it = c_otd.iterator(); otd_it.hasNext();){
2714                      OptionalTaskDescriptor otd = (OptionalTaskDescriptor)otd_it.next();
2715                      if(needcomma)
2716                          output.println(",");
2717                      needcomma=true;
2718                      output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2719                  }
2720              }
2721              output.println("};\n");
2722
2723              //get all the possible flagstates reachable by an object
2724              Hashtable hashtbtemp = safeexecution.get(cdtemp);
2725              int fscounter = 0;
2726              TreeSet fsts=new TreeSet(new FlagComparator(flaginfo));
2727              fsts.addAll(hashtbtemp.keySet());
2728              for(Iterator fsit=fsts.iterator();fsit.hasNext();) {
2729                  FlagState fs = (FlagState)fsit.next();
2730                  fscounter++;
2731
2732                  //get the set of OptionalTaskDescriptors corresponding
2733                  HashSet<OptionalTaskDescriptor> availabletasks = (HashSet<OptionalTaskDescriptor>)hashtbtemp.get(fs);
2734                  //iterate through the OptionalTaskDescriptors and
2735                  //store the pointers to the optionals struct (see on
2736                  //top) into an array
2737
2738                  output.println("struct optionaltaskdescriptor * optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[] = {");
2739                  for(Iterator<OptionalTaskDescriptor> mos = ordertd(availabletasks).iterator(); mos.hasNext();){
2740                      OptionalTaskDescriptor mm = mos.next();
2741                      if(!mos.hasNext())
2742                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol());
2743                      else
2744                          output.println("&optionaltaskdescriptor_"+mm.getuid()+"_"+cdtemp.getSafeSymbol()+",");
2745                  }
2746
2747                  output.println("};\n");
2748
2749                  //process flag information (what the flag after failure is) so we know what optionaltaskdescriptors to choose.
2750
2751                  int flagid=0;
2752                  for(Iterator flags = fs.getFlags(); flags.hasNext();){
2753                      FlagDescriptor flagd = (FlagDescriptor)flags.next();
2754                      int id=1<<((Integer)flaginfo.get(flagd)).intValue();
2755                      flagid|=id;
2756                  }
2757
2758                  //process tag information
2759
2760                  int tagcounter = 0;
2761                  boolean first = true;
2762                  Enumeration tag_enum = fs.getTags();
2763                  output.println("int tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2764                  while(tag_enum.hasMoreElements()){
2765                      tagcounter++;
2766                      TagDescriptor tagd = (TagDescriptor)tag_enum.nextElement();
2767                      if(first==true)
2768                          first = false;
2769                      else
2770                          output.println(", ");
2771                      output.println("/*tagid*/"+state.getTagId(tagd));
2772                  }
2773                  output.println("};");
2774
2775                  Set<TaskIndex> tiset=sa.getTaskIndex(fs);
2776                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2777                      TaskIndex ti=itti.next();
2778                      if (ti.isRuntime())
2779                          continue;
2780
2781                      Set<OptionalTaskDescriptor> otdset=sa.getOptions(fs, ti);
2782
2783                      output.print("struct optionaltaskdescriptor * optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array[] = {");
2784                      boolean needcomma=false;
2785                      for(Iterator<OptionalTaskDescriptor> otdit=ordertd(otdset).iterator();otdit.hasNext();) {
2786                          OptionalTaskDescriptor otd=otdit.next();
2787                          if(needcomma)
2788                              output.print(", ");
2789                          needcomma=true;
2790                          output.println("&optionaltaskdescriptor_"+otd.getuid()+"_"+cdtemp.getSafeSymbol());
2791                      }
2792                      output.println("};");
2793
2794                      output.print("struct taskfailure taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+" = {");
2795                      output.print("&task_"+ti.getTask().getSafeSymbol()+", ");
2796                      output.print(ti.getIndex()+", ");
2797                      output.print(otdset.size()+", ");
2798                      output.print("optionaltaskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex()+"_array");
2799                      output.println("};");
2800                  }
2801
2802                  tiset=sa.getTaskIndex(fs);
2803                  boolean needcomma=false;
2804                  int runtimeti=0;
2805                  output.println("struct taskfailure * taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+"[]={");
2806                  for(Iterator<TaskIndex> itti=tiset.iterator();itti.hasNext();) {
2807                      TaskIndex ti=itti.next();
2808                      if (ti.isRuntime()) {
2809                          runtimeti++;
2810                          continue;
2811                      }
2812                      if (needcomma)
2813                          output.print(", ");
2814                      needcomma=true;
2815                      output.print("&taskfailure_FS"+fscounter+"_"+ti.getTask().getSafeSymbol()+"_"+ti.getIndex());
2816                  }
2817                  output.println("};\n");
2818
2819                  //Store the result in fsanalysiswrapper
2820
2821                  output.println("struct fsanalysiswrapper fsanalysiswrapper_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+"={");
2822                  output.println("/*flag*/"+flagid+",");
2823                  output.println("/* number of tags*/"+tagcounter+",");
2824                  output.println("tags_FS"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2825                  output.println("/* numtask failures */"+(tiset.size()-runtimeti)+",");
2826                  output.println("taskfailurearray"+fscounter+"_"+cdtemp.getSafeSymbol()+",");
2827                  output.println("/* number of optionaltaskdescriptors */"+availabletasks.size()+",");
2828                  output.println("optionaltaskdescriptorarray_FS"+fscounter+"_"+cdtemp.getSafeSymbol());
2829                  output.println("};\n");
2830
2831              }
2832
2833              //Build the array of fsanalysiswrappers
2834              output.println("struct fsanalysiswrapper * fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"[] = {");
2835              boolean needcomma=false;
2836              for(int i = 0; i<fscounter; i++){
2837                  if (needcomma) output.print(",");
2838                  output.println("&fsanalysiswrapper_FS"+(i+1)+"_"+cdtemp.getSafeSymbol());
2839                  needcomma=true;
2840              }
2841              output.println("};");
2842
2843              //Build the classanalysiswrapper referring to the previous array
2844              output.println("struct classanalysiswrapper classanalysiswrapper_"+cdtemp.getSafeSymbol()+"={");
2845              output.println("/*type*/"+cdtemp.getId()+",");
2846              output.println("/*numotd*/"+numotd+",");
2847              output.println("otdarray"+cdtemp.getSafeSymbol()+",");
2848              output.println("/* number of fsanalysiswrappers */"+fscounter+",");
2849              output.println("fsanalysiswrapperarray_"+cdtemp.getSafeSymbol()+"};\n");
2850              processedcd.add(cdtemp);
2851          }
2852
2853          //build an array containing every classes for which code has been build
2854          output.println("struct classanalysiswrapper * classanalysiswrapperarray[]={");
2855          for(int i=0;i<state.numClasses();i++) {
2856              ClassDescriptor cn=cdarray[i];
2857              if (i>0)
2858                  output.print(", ");
2859              if (processedcd.contains(cn))
2860                  output.print("&classanalysiswrapper_"+cn.getSafeSymbol());
2861              else
2862                  output.print("NULL");
2863          }
2864          output.println("};");
2865
2866          output.println("#define MAXOTD "+maxotd);
2867          headers.println("#endif");
2868      }
2869
2870     public List<OptionalTaskDescriptor> ordertd(Set<OptionalTaskDescriptor> otdset) {
2871         Relation r=new Relation();
2872         for(Iterator<OptionalTaskDescriptor>otdit=otdset.iterator();otdit.hasNext();) {
2873             OptionalTaskDescriptor otd=otdit.next();
2874             TaskIndex ti=new TaskIndex(otd.td, otd.getIndex());
2875             r.put(ti, otd);
2876         }
2877
2878         LinkedList<OptionalTaskDescriptor> l=new LinkedList<OptionalTaskDescriptor>();
2879         for(Iterator it=r.keySet().iterator();it.hasNext();) {
2880             Set s=r.get(it.next());
2881             for(Iterator it2=s.iterator();it2.hasNext();) {
2882                 OptionalTaskDescriptor otd=(OptionalTaskDescriptor)it2.next();
2883                 l.add(otd);
2884             }
2885         }
2886
2887         return l;
2888     }
2889 }
2890
2891
2892
2893
2894
2895