private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
Type type = db.lookupType("instanceKlass");
arrayKlasses = new OopField(type.getOopField("_array_klasses"), Oop.getHeaderSize());
methods = new OopField(type.getOopField("_methods"), Oop.getHeaderSize());
methodOrdering = new OopField(type.getOopField("_method_ordering"), Oop.getHeaderSize());
localInterfaces = new OopField(type.getOopField("_local_interfaces"), Oop.getHeaderSize());
transitiveInterfaces =
new OopField(type.getOopField("_transitive_interfaces"), Oop.getHeaderSize());
nofImplementors =
new CIntField(type.getCIntegerField("_nof_implementors"), Oop.getHeaderSize());
IMPLEMENTORS_LIMIT = db.lookupIntConstant("instanceKlass::implementors_limit").intValue();
implementors = new OopField[IMPLEMENTORS_LIMIT];
for (int i = 0; i < IMPLEMENTORS_LIMIT; i++) {
long arrayOffset = Oop.getHeaderSize() + (i * db.getAddressSize());
implementors[i] = new OopField(type.getOopField("_implementors[0]"), arrayOffset);
}
fields = new OopField(type.getOopField("_fields"), Oop.getHeaderSize());
constants = new OopField(type.getOopField("_constants"), Oop.getHeaderSize());
classLoader = new OopField(type.getOopField("_class_loader"), Oop.getHeaderSize());
protectionDomain = new OopField(type.getOopField("_protection_domain"), Oop.getHeaderSize());
signers = new OopField(type.getOopField("_signers"), Oop.getHeaderSize());
sourceFileName = new OopField(type.getOopField("_source_file_name"), Oop.getHeaderSize());
sourceDebugExtension =
new OopField(type.getOopField("_source_debug_extension"), Oop.getHeaderSize());
innerClasses = new OopField(type.getOopField("_inner_classes"), Oop.getHeaderSize());
nonstaticFieldSize =
new CIntField(type.getCIntegerField("_nonstatic_field_size"), Oop.getHeaderSize());
staticFieldSize =
new CIntField(type.getCIntegerField("_static_field_size"), Oop.getHeaderSize());
staticOopFieldSize =
new CIntField(type.getCIntegerField("_static_oop_field_size"), Oop.getHeaderSize());
nonstaticOopMapSize =
new CIntField(type.getCIntegerField("_nonstatic_oop_map_size"), Oop.getHeaderSize());
isMarkedDependent =
new CIntField(type.getCIntegerField("_is_marked_dependent"), Oop.getHeaderSize());
initState = new CIntField(type.getCIntegerField("_init_state"), Oop.getHeaderSize());
vtableLen = new CIntField(type.getCIntegerField("_vtable_len"), Oop.getHeaderSize());
itableLen = new CIntField(type.getCIntegerField("_itable_len"), Oop.getHeaderSize());
breakpoints = type.getAddressField("_breakpoints");
genericSignature = new OopField(type.getOopField("_generic_signature"), Oop.getHeaderSize());
majorVersion = new CIntField(type.getCIntegerField("_major_version"), Oop.getHeaderSize());
minorVersion = new CIntField(type.getCIntegerField("_minor_version"), Oop.getHeaderSize());
headerSize = alignObjectOffset(Oop.getHeaderSize() + type.getSize());
// read field offset constants
ACCESS_FLAGS_OFFSET = db.lookupIntConstant("instanceKlass::access_flags_offset").intValue();
NAME_INDEX_OFFSET = db.lookupIntConstant("instanceKlass::name_index_offset").intValue();
SIGNATURE_INDEX_OFFSET =
db.lookupIntConstant("instanceKlass::signature_index_offset").intValue();
INITVAL_INDEX_OFFSET = db.lookupIntConstant("instanceKlass::initval_index_offset").intValue();
LOW_OFFSET = db.lookupIntConstant("instanceKlass::low_offset").intValue();
HIGH_OFFSET = db.lookupIntConstant("instanceKlass::high_offset").intValue();
GENERIC_SIGNATURE_INDEX_OFFSET =
db.lookupIntConstant("instanceKlass::generic_signature_offset").intValue();
NEXT_OFFSET = db.lookupIntConstant("instanceKlass::next_offset").intValue();
// read ClassState constants
CLASS_STATE_UNPARSABLE_BY_GC =
db.lookupIntConstant("instanceKlass::unparsable_by_gc").intValue();
CLASS_STATE_ALLOCATED = db.lookupIntConstant("instanceKlass::allocated").intValue();
CLASS_STATE_LOADED = db.lookupIntConstant("instanceKlass::loaded").intValue();
CLASS_STATE_LINKED = db.lookupIntConstant("instanceKlass::linked").intValue();
CLASS_STATE_BEING_INITIALIZED =
db.lookupIntConstant("instanceKlass::being_initialized").intValue();
CLASS_STATE_FULLY_INITIALIZED =
db.lookupIntConstant("instanceKlass::fully_initialized").intValue();
CLASS_STATE_INITIALIZATION_ERROR =
db.lookupIntConstant("instanceKlass::initialization_error").intValue();
}
