Ejemplo n.º 1
0
        public static StructFieldsEx GetStructFields(StructFields sf, ClrType type)
        {
            Debug.Assert(type.IsValueClass);
            var flds = type.Fields;
            var cnt  = flds.Count;

            StructFieldsEx[] structFields = null;
            var types  = new ClrType[cnt];
            var fields = new ClrInstanceField[cnt];

            for (int i = 0; i < cnt; ++i)
            {
                var fld  = flds[i];
                var kind = TypeExtractor.GetElementKind(fld.Type);
                if (TypeExtractor.IsUnknownStruct(kind))
                {
                    fields[i] = fld;
                    types[i]  = fld.Type;
                    if (structFields == null)
                    {
                        structFields = new StructFieldsEx[cnt];
                    }
                    Debug.Assert(sf.Structs[i] != null);
                    structFields[i] = GetStructFields(sf.Structs[i], fld.Type);
                }
                else
                {
                    fields[i] = fld;
                    types[i]  = fld.Type;
                }
            }
            return(new StructFieldsEx(sf, types, fields, structFields));
        }
Ejemplo n.º 2
0
        public static StructFields GetStructFields(ClrType type)
        {
            Debug.Assert(type.IsValueClass);
            var flds      = type.Fields.ToArray(); // enumeration seems off when this is not done
            var cnt       = flds.Length;
            var kinds     = new ClrElementKind[cnt];
            var names     = new string[cnt];
            var typeNames = new string[cnt];

            StructFields[] structFields = null;

            for (int i = 0; i < cnt; ++i)
            {
                var fld = flds[i];
                kinds[i]     = TypeExtractor.GetElementKind(fld.Type);
                names[i]     = fld.Name;
                typeNames[i] = fld.Type == null ? Constants.UnknownName : fld.Type.Name;
                if (TypeExtractor.IsUnknownStruct(kinds[i]))
                {
                    if (structFields == null)
                    {
                        structFields = new StructFields[cnt];
                    }
                    structFields[i] = GetStructFields(fld.Type);
                }
            }
            return(new StructFields(type.Name, kinds, names, typeNames, structFields));
        }
Ejemplo n.º 3
0
 public void SetField(ClrType parent)
 {
     if (parent.Fields != null && _fldIndex >= 0 && _fldIndex < parent.Fields.Count)
     {
         _field = parent.Fields[_fldIndex];
         _kind  = TypeExtractor.GetElementKind(_field.Type);
     }
 }
Ejemplo n.º 4
0
        public static StructValueStrings GetStructValueStrings(StructFieldsEx structFld, ClrHeap heap, ulong addr)
        {
            var cnt        = structFld._fields.Length;
            var structInfo = structFld._structFields;
            var vals       = new string[cnt];

            StructValueStrings[] structVals = null;
            for (int i = 0; i < cnt; ++i)
            {
                if (structInfo.IsAmbiguousKind(i))
                {
                    var fobj  = structFld._fields[i].GetValue(addr, true);
                    var faddr = (ulong)fobj;
                    var ftype = heap.GetObjectType(faddr);
                    if (ftype != null)
                    {
                        structFld._types[i] = ftype;
                        structInfo.SetKind(TypeExtractor.GetElementKind(ftype), i);
                    }
                }
                var fldType = structFld._types[i];
                var fld     = structFld._fields[i];
                var kind    = structFld._structFields.Kinds[i];
                Debug.Assert(fld != null);
                if (structFld._ex?[i] != null)
                {
                    if (structVals == null)
                    {
                        structVals = new StructValueStrings[cnt];
                    }

                    structVals[i] = GetStructValueStrings(structFld._ex[i], heap, fld.GetAddress(addr, true));
                }
                else if (fldType != null)
                {
                    var fobj  = fld.GetValue(addr, true);
                    var faddr = (ulong)fobj;
                    vals[i] = ValueExtractor.GetTypeValueString(heap, faddr, fldType, true, kind);
                }
                else
                {
                    if (TypeExtractor.IsKnownPrimitive(kind))
                    {
                        vals[i] = ValueExtractor.GetFieldValueString(heap, addr, true, fld, kind);
                    }
                    else
                    {
                        var fobj  = fld.GetAddress(addr, true);
                        var faddr = (ulong)fobj;
                        vals[i] = ValueExtractor.GetFieldValueString(heap, faddr, true, fld, kind);
                    }
                }
            }
            return(new StructValueStrings(vals, structVals));
        }
Ejemplo n.º 5
0
        public static StructFieldsInfo GetStructFields(ClrType type, ClrHeap heap, ulong addr)
        {
            Debug.Assert(type.IsValueClass);
            var flds = type.Fields;
            var cnt  = flds.Count;

            StructFieldsInfo[] structFields = null;
            var types     = new ClrType[cnt];
            var typeKinds = new ClrElementKind[cnt];
            var fields    = new ClrInstanceField[cnt];
            var fldKinds  = new ClrElementKind[cnt];

            for (int i = 0; i < cnt; ++i)
            {
                var fld   = flds[i];
                var ftype = fld.Type;
                fields[i]    = fld;
                fldKinds[i]  = TypeExtractor.GetElementKind(fld.Type);
                types[i]     = fld.Type;
                typeKinds[i] = fldKinds[i];
                if (TypeExtractor.IsAmbiguousKind(fldKinds[i]))
                {
                    ClrType        fType = null;
                    ClrElementKind fKind = ClrElementKind.Unknown;
                    ClrType        rType = null;
                    ClrElementKind rKind = ClrElementKind.Unknown;
                    //object obj = fld.GetValue(addr, false, false);
                    object obj = fld.GetValue(addr, true, false); // TODO JRD
                    if (obj is ulong)
                    {
                        (fType, fKind, rType, rKind) = TypeExtractor.GetRealType(heap, (ulong)obj);
                    }
                    if (fType != null)
                    {
                        types[i]     = fType;
                        typeKinds[i] = fKind;
                        ftype        = fType;
                    }
                }

                if (TypeExtractor.IsUnknownStruct(fldKinds[i]) || TypeExtractor.IsUnknownStruct(typeKinds[i]))
                {
                    if (structFields == null)
                    {
                        structFields = new StructFieldsInfo[cnt];
                    }
                    var faddr = fld.GetAddress(addr, false);
                    structFields[i] = GetStructFields(types[i], heap, faddr);
                }
            }
            return(new StructFieldsInfo(type, types, typeKinds, fields, fldKinds, structFields));
        }
Ejemplo n.º 6
0
        GetClassTypeInfo(ClrHeap heap, ulong addr)
        {
            try
            {
                addr = Utils.RealAddress(addr);
                var type = heap.GetObjectType(addr);
                if (type == null)
                {
                    return("Object Value Error" + Constants.HeavyGreekCrossPadded + "Cannot find an instance." + Constants.HeavyGreekCrossPadded + "Heap cannot get object type at address: " + Utils.RealAddressString(addr), null, ClrElementKind.Unknown, null, null);
                }
                var kind   = TypeExtractor.GetElementKind(type);
                var fldCnt = type.Fields.Count;

                var fldTypes = fldCnt == 0 ? Utils.EmptyArray <ClrType> .Value : new ClrType[fldCnt];
                var fldKinds = fldCnt == 0 ? Utils.EmptyArray <ClrElementKind> .Value : new ClrElementKind[fldCnt];
                var strings  = fldCnt == 0 ? Utils.EmptyArray <string> .Value : new string[fldCnt];
                for (int i = 0; i < fldCnt; ++i)
                {
                    var fld     = type.Fields[i];
                    var fldType = fld.Type; // returns ClrElementKind.Unknown if fld.Type is null
                    fldTypes[i] = fldType;
                    var fldKind = TypeExtractor.GetElementKind(fldType);
                    fldKinds[i] = fldKind;
                    if (fldKind == ClrElementKind.Unknown)
                    {
                        continue;                                    // nothing to do here, from MDR lib: There is
                    }
                    // a bug in several versions of our debugging layer which causes this.
                    if (TypeExtractor.IsAmbiguousKind(fldKind))
                    {
                        (ClrType aType, ClrElementKind aKind) = TypeExtractor.GetReferenceFieldRealTypeAndKind(heap, addr, fld);
                        if (aType != null)
                        {
                            fldType     = aType;
                            fldTypes[i] = fldType;
                            fldKind     = aKind;
                            fldKinds[i] = fldKind;
                        }
                    }
                }
                return(null, type, kind, fldTypes, fldKinds);
            }
            catch (Exception ex)
            {
                return(Utils.GetExceptionErrorString(ex), null, ClrElementKind.Unknown, null, null);
            }
        }
Ejemplo n.º 7
0
        public static ValueTuple <StructFields, StructFieldsEx> GetStructInfo(ClrType structType, ClrHeap heap, ulong addr, out string error)
        {
            Debug.Assert(structType.IsValueClass);
            error = null;
            try
            {
                ClrType type = null;
                object  val  = structType.Fields[0].GetValue(addr, true, false);

                if (val is ulong)
                {
                    type = heap.GetObjectType((ulong)val);
                }

                if (type == null)
                {
                    error = "StructValues.GetStructInfo" + Constants.HeavyGreekCrossPadded
                            + "Expected structure at address: " + Utils.RealAddressString(addr) + Constants.HeavyGreekCrossPadded
                            + "ClrHeap.GetObjectType return null. Field name: " + structType.Fields[0].Name + Constants.HeavyGreekCrossPadded;
                    return(null, null);
                }
                ClrElementKind kind = TypeExtractor.GetElementKind(type);
                if (TypeExtractor.IsUnknownStruct(kind))
                {
                    error = "StructValues.GetStructInfo" + Constants.HeavyGreekCrossPadded
                            + "Expected structure at address: " + Utils.RealAddressString(addr) + Constants.HeavyGreekCrossPadded
                            + "Found: " + type.Name + Constants.HeavyGreekCrossPadded;
                    return(null, null);
                }


                StructFields   sf  = StructFields.GetStructFields(type);
                StructFieldsEx sfx = StructFieldsEx.GetStructFields(sf, type, heap, addr);
                return(sf, sfx);
            }
            catch (Exception ex)
            {
                error = Utils.GetExceptionErrorString(ex);
                return(null, null);
            }
        }
Ejemplo n.º 8
0
        public static StructFieldsEx GetStructFields(StructFields sf, ClrType type, ClrHeap heap, ulong addr)
        {
            Debug.Assert(type.IsValueClass);
            var flds = type.Fields;
            var cnt  = flds.Count;

            StructFieldsEx[] structFields = null;
            var types  = new ClrType[cnt];
            var fields = new ClrInstanceField[cnt];

            for (int i = 0; i < cnt; ++i)
            {
                var     fld   = flds[i];
                var     kind  = TypeExtractor.GetElementKind(fld.Type);
                ClrType fType = null;
                if (TypeExtractor.IsAmbiguousKind(kind))
                {
                    object obj = fld.GetValue(addr, false, false);
                    if (obj is ulong)
                    {
                        fType = heap.GetObjectType((ulong)obj);
                    }
                }

                fields[i] = fld;
                types[i]  = fType ?? fld.Type;

                if (TypeExtractor.IsUnknownStruct(kind))
                {
                    if (structFields == null)
                    {
                        structFields = new StructFieldsEx[cnt];
                    }
                    Debug.Assert(sf.Structs[i] != null);
                    structFields[i] = GetStructFields(sf.Structs[i], fld.Type);
                }
            }
            return(new StructFieldsEx(sf, types, fields, structFields));
        }
Ejemplo n.º 9
0
 public void SetField(ClrInstanceField fld)
 {
     _field = fld;
     _kind  = TypeExtractor.GetElementKind(_field.Type);
 }
Ejemplo n.º 10
0
        GetClassValueStrings(ClrHeap heap, ulong addr)
        {
            try
            {
                addr = Utils.RealAddress(addr);

                (ClrType type, ClrElementKind kind, ClrType rtype, ClrElementKind rkind) = TypeExtractor.GetRealType(heap, addr);
                if (type == null)
                {
                    return("Object Value Error" + Constants.HeavyGreekCrossPadded + "Cannot find an instance." + Constants.HeavyGreekCrossPadded + "Heap cannot get object type at address: " + Utils.RealAddressString(addr), null, ClrElementKind.Unknown, (null, null, null, null));
                }

                var fldCnt   = type.Fields.Count;
                var fldTypes = fldCnt == 0 ? Utils.EmptyArray <ClrType> .Value : new ClrType[fldCnt];
                var fldKinds = fldCnt == 0 ? Utils.EmptyArray <ClrElementKind> .Value : new ClrElementKind[fldCnt];
                var strings  = fldCnt == 0 ? Utils.EmptyArray <string> .Value : new string[fldCnt];
                StructValueStrings[] structVals = null;
                for (int i = 0; i < fldCnt; ++i)
                {
                    var fld     = type.Fields[i];
                    var fldType = fld.Type; // returns ClrElementKind.Unknown if fld.Type is null
                    fldTypes[i] = fldType;
                    var fldKind = TypeExtractor.GetElementKind(fldType);
                    fldKinds[i] = fldKind;
                    if (fldKind == ClrElementKind.Unknown)
                    {
                        strings[i] = Constants.UnknownValue;
                        continue; // nothing to do here, from MDR lib: There is
                                  // a bug in several versions of our debugging layer which causes this.
                    }
                    if (TypeExtractor.IsAmbiguousKind(fldKind))
                    {
                        (ClrType aType, ClrElementKind aKind) = TypeExtractor.GetReferenceFieldRealTypeAndKind(heap, addr, fld);
                        if (aType != null)
                        {
                            fldType     = aType;
                            fldTypes[i] = fldType;
                            fldKind     = aKind;
                            fldKinds[i] = fldKind;
                        }
                    }
                    if (TypeExtractor.IsString(fldKind))
                    {
                        var o = fld.GetValue(addr, false, true);
                        strings[i] = o == null ? Constants.NullValue : o.ToString();
                    }
                    else if (TypeExtractor.IsObjectReference(fldKind))
                    {
                        var obj = fld.GetValue(addr, false, false);
                        strings[i] = obj == null ? Constants.InvalidAddressStr : Utils.RealAddressString((ulong)obj);
                    }
                    else if (TypeExtractor.IsEnum(fldKind))
                    {
                        strings[i] = ValueExtractor.GetEnumString(addr, fld, false);
                    }
                    else if (fldType.IsPrimitive)
                    {
                        strings[i] = ValueExtractor.PrimitiveValue(addr, fld, false);
                    }
                    else if (TypeExtractor.IsKnownStruct(fldKind))
                    {
                        switch (TypeExtractor.GetSpecialKind(fldKind))
                        {
                        case ClrElementKind.DateTime:
                            strings[i] = ValueExtractor.GetDateTimeString(addr, fld, false);
                            break;

                        case ClrElementKind.Guid:
                            strings[i] = ValueExtractor.GuidValueAsString(addr, fldType, false);
                            break;

                        case ClrElementKind.Decimal:
                            strings[i] = ValueExtractor.DecimalStringPAF(addr, fld, false);
                            break;

                        case ClrElementKind.TimeSpan:
                            strings[i] = ValueExtractor.TimeSpanValueAsString(addr, fldType);
                            break;
                        }
                    }
                    else if (TypeExtractor.IsUnknownStruct(fldKind))
                    {
                        StructFields   sf  = StructFields.GetStructFields(fldType);
                        StructFieldsEx sfx = StructFieldsEx.GetStructFields(sf, fldType);
                        sfx.ResetTypes();
                        if (structVals == null)
                        {
                            structVals = new StructValueStrings[fldCnt];
                        }
                        ulong structAddr = fld.GetAddress(addr, false);
                        structVals[i] = StructFieldsEx.GetStructValueStrings(sfx, heap, structAddr);
                    }
                }
                //if (!Utils.SameStrings(fld.Type.Name,fldType.Name))
                //    {
                //        ulong fldAddr = fld.GetAddress(addr, type.IsValueClass);
                //        if (TypeExtractor.IsString(fldKind))
                //        {
                //            var obj = ValueExtractor.GetStringValue(fldType, fldAddr);
                //            strings[i] = obj == null ? Constants.NullValue : (string)obj;
                //        }
                //        else if (TypeExtractor.IsObjectReference(fldKind))
                //        {
                //            var obj = fld.GetValue(addr, false, false);
                //            strings[i] = obj == null ? Constants.InvalidAddressStr : Utils.RealAddressString((ulong)obj);
                //        }
                //        else if (TypeExtractor.IsEnum(fldKind))
                //        {
                //            long intVal;
                //            strings[i] = ValueExtractor.GetEnumValueString(fldAddr, fldType, out intVal);
                //        }
                //        else if (fldType.IsPrimitive)
                //        {
                //            var obj = fld.Type.GetValue(fldAddr);
                //            strings[i] = ValueExtractor.PrimitiveValue(obj, fldKind);
                //        }
                //        else if (TypeExtractor.IsKnownStruct(fldKind))
                //        {
                //            switch (TypeExtractor.GetSpecialKind(fldKind))
                //            {
                //                case ClrElementKind.DateTime:
                //                    strings[i] = ValueExtractor.DateTimeValueString(fldAddr, fldType, null);
                //                    break;
                //                case ClrElementKind.Guid:
                //                    strings[i] = ValueExtractor.GuidValueAsString(fldAddr, fldType);
                //                    break;
                //                case ClrElementKind.Decimal:
                //                    strings[i] = ValueExtractor.DecimalValueAsString(fldAddr, fldType,null);
                //                    break;
                //                case ClrElementKind.TimeSpan:
                //                    strings[i] = ValueExtractor.TimeSpanValueAsString(fldAddr, fldType);
                //                    break;
                //            }
                //        }
                //        else if (TypeExtractor.IsUnknownStruct(fldKind))
                //        {
                //            StructFields sf = StructFields.GetStructFields(fldType);
                //            StructFieldsEx sfx = StructFieldsEx.GetStructFields(sf, fldType);
                //            sfx.ResetTypes();
                //            if (structVals == null) structVals = new StructValueStrings[fldCnt];
                //            ulong structAddr = fld.GetAddress(addr, false);
                //            structVals[i] = StructFieldsEx.GetStructValueStrings(sfx, heap, structAddr);
                //        }

                //        continue;


                return(null, type, kind, (fldTypes, fldKinds, strings, structVals));
            }
            catch (Exception ex)
            {
                return(Utils.GetExceptionErrorString(ex), null, ClrElementKind.Unknown, (null, null, null, null));
            }
        }
Ejemplo n.º 11
0
        GetClassValues(ClrHeap heap, ulong addr)
        {
            try
            {
                addr = Utils.RealAddress(addr);
                (ClrType type, ClrElementKind kind, ClrType rtType, ClrElementKind rtKind) = TypeExtractor.GetRealType(heap, addr);

                if (type == null)
                {
                    return("Object Value Error" + Constants.HeavyGreekCrossPadded + "Cannot find an instance." + Constants.HeavyGreekCrossPadded + "Heap cannot get object type at address: " + Utils.RealAddressString(addr), null, ClrElementKind.Unknown, (null, null, null, null, null));
                }
                var fldCnt = type.Fields.Count;

                var                fldTypes       = fldCnt == 0 ? Utils.EmptyArray <ClrType> .Value : new ClrType[fldCnt];
                var                fldKinds       = fldCnt == 0 ? Utils.EmptyArray <ClrElementKind> .Value : new ClrElementKind[fldCnt];
                var                objects        = fldCnt == 0 ? Utils.EmptyArray <object> .Value : new object[fldCnt];
                StructValues[]     structVals     = null;
                StructFieldsInfo[] structFldInfos = null;
                for (int i = 0; i < fldCnt; ++i)
                {
                    var fld     = type.Fields[i];
                    var fldType = fld.Type; // returns ClrElementKind.Unknown if fld.Type is null
                    var fldKind = TypeExtractor.GetElementKind(fldType);
                    if (fldKind == ClrElementKind.Unknown)
                    {
                        objects[i] = null;
                        continue; // nothing to do here, from MDR lib: There is
                                  // a bug in several versions of our debugging layer which causes this.
                    }
                    if (fldType == null || TypeExtractor.IsAmbiguousKind(fldKind))
                    {
                        var fldValObj = fld.GetValue(addr, type.IsValueClass, false);
                        if (fldValObj != null && fldValObj is ulong)
                        {
                            var t = heap.GetObjectType((ulong)fldValObj);
                            if (t != null)
                            {
                                fldType = t;
                                fldKind = TypeExtractor.GetElementKind(t);
                            }
                        }
                    }
                    fldTypes[i] = fldType;
                    fldKinds[i] = fldKind;
                    if (fldKind == ClrElementKind.Unknown)
                    {
                        continue;                                    // nothing to do here, from MDR lib: There is
                    }
                    // a bug in several versions of our debugging layer which causes this.
                    if (TypeExtractor.IsString(fldKind))
                    {
                        objects[i] = fld.GetValue(addr, false, true);
                    }
                    else if (TypeExtractor.IsObjectReference(fldKind))
                    {
                        object obj = fld.GetValue(addr, false, false);
                        if (obj != null && (ulong)obj != Constants.InvalidAddress)
                        {
                            var t = heap.GetObjectType((ulong)obj);
                            if (t != null)
                            {
                                var k = TypeExtractor.GetElementKind(t);
                                fldTypes[i] = t;
                                fldKinds[i] = k;
                            }
                        }

                        objects[i] = obj;
                    }
                    else if (TypeExtractor.IsEnum(fldKind))
                    {
                        objects[i] = ValueExtractor.GetEnumValueObject(addr, fld, false);
                    }
                    else if (fldType.IsPrimitive)
                    {
                        objects[i] = ValueExtractor.GetPrimitiveValueObject(addr, fld, false);
                    }
                    else if (TypeExtractor.IsKnownStruct(fldKind))
                    {
                        switch (TypeExtractor.GetSpecialKind(fldKind))
                        {
                        case ClrElementKind.DateTime:
                            objects[i] = ValueExtractor.GetDateTimePAF(addr, fld, false);
                            break;

                        case ClrElementKind.Guid:
                            objects[i] = ValueExtractor.GetGuid(addr, fld, false);
                            break;

                        case ClrElementKind.Decimal:
                            objects[i] = ValueExtractor.GetDecimalPAF(addr, fld, false);
                            break;

                        case ClrElementKind.TimeSpan:
                            objects[i] = ValueExtractor.TimeSpanValue(addr, fldType);
                            break;
                        }
                    }
                    else if (TypeExtractor.IsUnknownStruct(fldKind))
                    {
                        //StructFields sf = StructFields.GetStructFields(fldType);
                        //StructFieldsEx sfx = StructFieldsEx.GetStructFields(sf, fldType);
                        if (structFldInfos == null)
                        {
                            structFldInfos = new StructFieldsInfo[fldCnt];
                        }
                        ulong            saddr = fld.GetAddress(addr, true);
                        StructFieldsInfo sfi   = StructFieldsInfo.GetStructFields(fldType, heap, saddr);
                        structFldInfos[i] = sfi;
                        if (sfi != null)
                        {
                            if (structVals == null)
                            {
                                structVals = new StructValues[fldCnt];
                            }
                            structVals[i] = StructFieldsInfo.GetStructValues(sfi, heap, saddr);
                        }
                    }
                }

                return(null, type, kind, (fldTypes, fldKinds, objects, structFldInfos, structVals));
            }
            catch (Exception ex)
            {
                return(Utils.GetExceptionErrorString(ex), null, ClrElementKind.Unknown, (null, null, null, null, null));
            }
        }
Ejemplo n.º 12
-1
        public void GetValue(ClrHeap heap, ulong address, Queue <ValueTuple <TypeValue, ulong> > que)
        {
            que.Clear();
            que.Enqueue((this, address));
            while (que.Count > 0)
            {
                (TypeValue val, ulong addr) = que.Dequeue();
                if (val._type == null)
                {
                    ClrType clrType = heap.GetObjectType(addr);
                    if (clrType == null)
                    {
                        continue;
                    }
                    val._type = clrType;
                    val._kind = TypeExtractor.GetElementKind(clrType);
                    val.SetValue(addr);
                }
                if (val._children != null)
                {
                    for (int i = 0, icnt = val._children.Length; i < icnt; ++i)
                    {
                        TypeValue fldVal = val._children[i];

                        if (fldVal._fieldName != null && fldVal._field == null)
                        {
                            ClrInstanceField f = val._type.GetFieldByName(fldVal._fieldName);
                            if (f == null)
                            {
                                continue;
                            }
                            fldVal._field = f;
                            fldVal._type  = f.Type;
                            fldVal._kind  = TypeExtractor.GetElementKind(f.Type);
                        }
                        object v = ValueExtractor.GetFieldValue(heap, addr, fldVal._type.IsValueClass, fldVal._field, fldVal._kind);
                        ulong  a = (v is ulong) ? (ulong)v : Constants.InvalidAddress;
                        fldVal.SetValue(v);
                        que.Enqueue((val._children[i], (ulong)val._value));
                    }
                }
                else
                {
                    if (val._fieldName != null && val._field == null)
                    {
                        ClrInstanceField f = val._type.GetFieldByName(val._fieldName);
                        val._field = f;
                        val._type  = f.Type;
                        val._kind  = TypeExtractor.GetElementKind(f.Type);
                    }
                    object v = ValueExtractor.GetFieldValue(heap, addr, val._type.IsValueClass, val._field, val._kind);
                    val.SetValue(v);
                }
            }
        }