aoqi@0: /*
aoqi@0:  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "classfile/javaClasses.hpp"
aoqi@0: #include "memory/universe.inline.hpp"
aoqi@0: #include "runtime/reflectionUtils.hpp"
aoqi@0: 
aoqi@0: KlassStream::KlassStream(instanceKlassHandle klass, bool local_only,
aoqi@0:                          bool classes_only, bool walk_defaults) {
aoqi@0:   _klass = _base_klass = klass;
aoqi@0:   _base_class_search_defaults = false;
aoqi@0:   _defaults_checked = false;
aoqi@0:   if (classes_only) {
aoqi@0:     _interfaces = Universe::the_empty_klass_array();
aoqi@0:   } else {
aoqi@0:     _interfaces = klass->transitive_interfaces();
aoqi@0:   }
aoqi@0:   _interface_index = _interfaces->length();
aoqi@0:   _local_only = local_only;
aoqi@0:   _classes_only = classes_only;
aoqi@0:   _walk_defaults = walk_defaults;
aoqi@0: }
aoqi@0: 
aoqi@0: bool KlassStream::eos() {
aoqi@0:   if (index() >= 0) return false;
aoqi@0:   if (_local_only) return true;
aoqi@0:   if (!_klass->is_interface() && _klass->super() != NULL) {
aoqi@0:     // go up superclass chain (not for interfaces)
aoqi@0:     _klass = _klass->super();
aoqi@0:   // Next for method walks, walk default methods
aoqi@0:   } else if (_walk_defaults && (_defaults_checked == false)  && (_base_klass->default_methods() != NULL)) {
aoqi@0:       _base_class_search_defaults = true;
aoqi@0:       _klass = _base_klass;
aoqi@0:       _defaults_checked = true;
aoqi@0:   } else {
aoqi@0:     // Next walk transitive interfaces
aoqi@0:     if (_interface_index > 0) {
aoqi@0:       _klass = _interfaces->at(--_interface_index);
aoqi@0:     } else {
aoqi@0:       return true;
aoqi@0:     }
aoqi@0:   }
aoqi@0:   _index = length();
aoqi@0:   next();
aoqi@0:   return eos();
aoqi@0: }
aoqi@0: 
aoqi@0: 
aoqi@0: GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields =
aoqi@0:   new (ResourceObj::C_HEAP, mtInternal) GrowableArray<FilteredField*>(3,true);
aoqi@0: 
aoqi@0: 
aoqi@0: void FilteredFieldsMap::initialize() {
aoqi@0:   int offset;
aoqi@0:   offset = java_lang_Throwable::get_backtrace_offset();
aoqi@0:   _filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset));
aoqi@0:   // The latest version of vm may be used with old jdk.
aoqi@0:   if (JDK_Version::is_gte_jdk16x_version()) {
aoqi@0:     // The following class fields do not exist in
aoqi@0:     // previous version of jdk.
aoqi@0:     offset = sun_reflect_ConstantPool::oop_offset();
aoqi@0:     _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset));
aoqi@0:     offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset();
aoqi@0:     _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset));
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: int FilteredFieldStream::field_count() {
aoqi@0:   int numflds = 0;
aoqi@0:   for (;!eos(); next()) {
aoqi@0:     numflds++;
aoqi@0:   }
aoqi@0:   return numflds;
aoqi@0: }