Robust/src/IR/Flat/BuildCode.java

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