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