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1 /*
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2 * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_reflectionUtils.cpp.incl"
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27
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28 KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) {
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29 _klass = klass;
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30 if (classes_only) {
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31 _interfaces = Universe::the_empty_system_obj_array();
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32 } else {
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33 _interfaces = klass->transitive_interfaces();
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34 }
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35 _interface_index = _interfaces->length();
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36 _local_only = local_only;
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37 _classes_only = classes_only;
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38 }
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39
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40 bool KlassStream::eos() {
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41 if (index() >= 0) return false;
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42 if (_local_only) return true;
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43 if (!_klass->is_interface() && _klass->super() != NULL) {
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44 // go up superclass chain (not for interfaces)
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45 _klass = _klass->super();
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46 } else {
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47 if (_interface_index > 0) {
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48 _klass = klassOop(_interfaces->obj_at(--_interface_index));
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49 } else {
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50 return true;
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51 }
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52 }
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53 _index = length();
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54 next();
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55 return eos();
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56 }
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57
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58
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59 GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields =
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60 new (ResourceObj::C_HEAP) GrowableArray<FilteredField*>(3,true);
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61
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62
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63 void FilteredFieldsMap::initialize() {
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64 int offset;
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65 offset = java_lang_Throwable::get_backtrace_offset();
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1142
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66 _filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset));
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0
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67 // The latest version of vm may be used with old jdk.
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68 if (JDK_Version::is_gte_jdk16x_version()) {
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69 // The following class fields do not exist in
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70 // previous version of jdk.
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71 offset = sun_reflect_ConstantPool::cp_oop_offset();
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1142
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72 _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset));
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0
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73 offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset();
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1142
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74 _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset));
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0
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75 }
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76 }
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77
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78 int FilteredFieldStream::field_count() {
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79 int numflds = 0;
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80 for (;!eos(); next()) {
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81 numflds++;
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82 }
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83 return numflds;
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84 }
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