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