1 /*
2 * Copyright (c) 1999, 2005, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 // A KlassStream is an abstract stream for streaming over self, superclasses
26 // and (super)interfaces. Streaming is done in reverse order (subclasses first,
27 // interfaces last).
28 //
29 // for (KlassStream st(k, false, false); !st.eos(); st.next()) {
30 // klassOop k = st.klass();
31 // ...
32 // }
33
34 class KlassStream VALUE_OBJ_CLASS_SPEC {
35 protected:
36 instanceKlassHandle _klass; // current klass/interface iterated over
37 objArrayHandle _interfaces; // transitive interfaces for initial class
38 int _interface_index; // current interface being processed
39 bool _local_only; // process initial class/interface only
40 bool _classes_only; // process classes only (no interfaces)
41 int _index;
42
43 virtual int length() const = 0;
44
192 class FilteredFieldStream : public FieldStream {
193 private:
194 int _filtered_fields_count;
195 bool has_filtered_field() { return (_filtered_fields_count > 0); }
196
197 public:
198 FilteredFieldStream(instanceKlassHandle klass, bool local_only, bool classes_only)
199 : FieldStream(klass, local_only, classes_only) {
200 _filtered_fields_count = FilteredFieldsMap::filtered_fields_count((klassOop)klass(), local_only);
201 }
202 int field_count();
203 void next() {
204 _index -= instanceKlass::next_offset;
205 if (has_filtered_field()) {
206 while (_index >=0 && FilteredFieldsMap::is_filtered_field((klassOop)_klass(), offset())) {
207 _index -= instanceKlass::next_offset;
208 }
209 }
210 }
211 };
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1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_RUNTIME_REFLECTIONUTILS_HPP
26 #define SHARE_VM_RUNTIME_REFLECTIONUTILS_HPP
27
28 #include "memory/allocation.hpp"
29 #include "oops/instanceKlass.hpp"
30 #include "oops/objArrayOop.hpp"
31 #include "oops/oopsHierarchy.hpp"
32 #include "runtime/handles.inline.hpp"
33 #include "runtime/reflection.hpp"
34 #include "utilities/accessFlags.hpp"
35 #include "utilities/globalDefinitions.hpp"
36
37 // A KlassStream is an abstract stream for streaming over self, superclasses
38 // and (super)interfaces. Streaming is done in reverse order (subclasses first,
39 // interfaces last).
40 //
41 // for (KlassStream st(k, false, false); !st.eos(); st.next()) {
42 // klassOop k = st.klass();
43 // ...
44 // }
45
46 class KlassStream VALUE_OBJ_CLASS_SPEC {
47 protected:
48 instanceKlassHandle _klass; // current klass/interface iterated over
49 objArrayHandle _interfaces; // transitive interfaces for initial class
50 int _interface_index; // current interface being processed
51 bool _local_only; // process initial class/interface only
52 bool _classes_only; // process classes only (no interfaces)
53 int _index;
54
55 virtual int length() const = 0;
56
204 class FilteredFieldStream : public FieldStream {
205 private:
206 int _filtered_fields_count;
207 bool has_filtered_field() { return (_filtered_fields_count > 0); }
208
209 public:
210 FilteredFieldStream(instanceKlassHandle klass, bool local_only, bool classes_only)
211 : FieldStream(klass, local_only, classes_only) {
212 _filtered_fields_count = FilteredFieldsMap::filtered_fields_count((klassOop)klass(), local_only);
213 }
214 int field_count();
215 void next() {
216 _index -= instanceKlass::next_offset;
217 if (has_filtered_field()) {
218 while (_index >=0 && FilteredFieldsMap::is_filtered_field((klassOop)_klass(), offset())) {
219 _index -= instanceKlass::next_offset;
220 }
221 }
222 }
223 };
224
225 #endif // SHARE_VM_RUNTIME_REFLECTIONUTILS_HPP
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