duke@435: /*
coleenp@4037:  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "classfile/javaClasses.hpp"
stefank@2314: #include "memory/universe.inline.hpp"
stefank@2314: #include "runtime/reflectionUtils.hpp"
duke@435: 
duke@435: KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) {
duke@435:   _klass = klass;
duke@435:   if (classes_only) {
coleenp@4037:     _interfaces = Universe::the_empty_klass_array();
duke@435:   } else {
duke@435:     _interfaces = klass->transitive_interfaces();
duke@435:   }
duke@435:   _interface_index = _interfaces->length();
duke@435:   _local_only = local_only;
duke@435:   _classes_only = classes_only;
duke@435: }
duke@435: 
duke@435: bool KlassStream::eos() {
duke@435:   if (index() >= 0) return false;
duke@435:   if (_local_only) return true;
duke@435:   if (!_klass->is_interface() && _klass->super() != NULL) {
duke@435:     // go up superclass chain (not for interfaces)
duke@435:     _klass = _klass->super();
duke@435:   } else {
duke@435:     if (_interface_index > 0) {
coleenp@4037:       _klass = _interfaces->at(--_interface_index);
duke@435:     } else {
duke@435:       return true;
duke@435:     }
duke@435:   }
duke@435:   _index = length();
duke@435:   next();
duke@435:   return eos();
duke@435: }
duke@435: 
duke@435: 
duke@435: GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields =
zgu@3900:   new (ResourceObj::C_HEAP, mtInternal) GrowableArray<FilteredField*>(3,true);
duke@435: 
duke@435: 
duke@435: void FilteredFieldsMap::initialize() {
duke@435:   int offset;
duke@435:   offset = java_lang_Throwable::get_backtrace_offset();
never@1577:   _filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset));
duke@435:   // The latest version of vm may be used with old jdk.
duke@435:   if (JDK_Version::is_gte_jdk16x_version()) {
duke@435:     // The following class fields do not exist in
duke@435:     // previous version of jdk.
coleenp@4037:     offset = sun_reflect_ConstantPool::oop_offset();
never@1577:     _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset));
duke@435:     offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset();
never@1577:     _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset));
duke@435:   }
duke@435: }
duke@435: 
duke@435: int FilteredFieldStream::field_count() {
duke@435:   int numflds = 0;
duke@435:   for (;!eos(); next()) {
duke@435:     numflds++;
duke@435:   }
duke@435:   return numflds;
duke@435: }