1 /*
2 * Copyright (c) 2015, 2025, 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 *
46 inline int InstanceKlass::java_fields_count() const { return FieldInfoStream::num_java_fields(fieldinfo_stream()); }
47 inline int InstanceKlass::total_fields_count() const { return FieldInfoStream::num_total_fields(fieldinfo_stream()); }
48
49 inline OopMapBlock* InstanceKlass::start_of_nonstatic_oop_maps() const {
50 return (OopMapBlock*)(start_of_itable() + itable_length());
51 }
52
53 inline Klass** InstanceKlass::end_of_nonstatic_oop_maps() const {
54 return (Klass**)(start_of_nonstatic_oop_maps() +
55 nonstatic_oop_map_count());
56 }
57
58 inline InstanceKlass* volatile* InstanceKlass::adr_implementor() const {
59 if (is_interface()) {
60 return (InstanceKlass* volatile*)end_of_nonstatic_oop_maps();
61 } else {
62 return nullptr;
63 }
64 }
65
66 inline ObjArrayKlass* InstanceKlass::array_klasses_acquire() const {
67 return AtomicAccess::load_acquire(&_array_klasses);
68 }
69
70 inline void InstanceKlass::release_set_array_klasses(ObjArrayKlass* k) {
71 AtomicAccess::release_store(&_array_klasses, k);
72 }
73
74 // The iteration over the oops in objects is a hot path in the GC code.
75 // By force inlining the following functions, we get similar GC performance
76 // as the previous macro based implementation.
77
78 template <typename T, class OopClosureType>
79 ALWAYSINLINE void InstanceKlass::oop_oop_iterate_oop_map(OopMapBlock* map, oop obj, OopClosureType* closure) {
80 T* p = obj->field_addr<T>(map->offset());
81 T* const end = p + map->count();
82
83 for (; p < end; ++p) {
84 Devirtualizer::do_oop(closure, p);
85 }
161
162 template <typename T, class OopClosureType>
163 ALWAYSINLINE void InstanceKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) {
164 assert(!Devirtualizer::do_metadata(closure),
165 "Code to handle metadata is not implemented");
166
167 oop_oop_iterate_oop_maps_reverse<T>(obj, closure);
168 }
169
170 template <typename T, class OopClosureType>
171 ALWAYSINLINE void InstanceKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
172 if (Devirtualizer::do_metadata(closure)) {
173 if (mr.contains(obj)) {
174 Devirtualizer::do_klass(closure, this);
175 }
176 }
177
178 oop_oop_iterate_oop_maps_bounded<T>(obj, closure, mr);
179 }
180
181 #endif // SHARE_OOPS_INSTANCEKLASS_INLINE_HPP
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1 /*
2 * Copyright (c) 2015, 2026, 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 *
46 inline int InstanceKlass::java_fields_count() const { return FieldInfoStream::num_java_fields(fieldinfo_stream()); }
47 inline int InstanceKlass::total_fields_count() const { return FieldInfoStream::num_total_fields(fieldinfo_stream()); }
48
49 inline OopMapBlock* InstanceKlass::start_of_nonstatic_oop_maps() const {
50 return (OopMapBlock*)(start_of_itable() + itable_length());
51 }
52
53 inline Klass** InstanceKlass::end_of_nonstatic_oop_maps() const {
54 return (Klass**)(start_of_nonstatic_oop_maps() +
55 nonstatic_oop_map_count());
56 }
57
58 inline InstanceKlass* volatile* InstanceKlass::adr_implementor() const {
59 if (is_interface()) {
60 return (InstanceKlass* volatile*)end_of_nonstatic_oop_maps();
61 } else {
62 return nullptr;
63 }
64 }
65
66 inline address InstanceKlass::end_of_instance_klass() const {
67 return (address)end_of_nonstatic_oop_maps() +
68 (is_interface() ? sizeof(InstanceKlass*) : 0);
69 }
70
71 inline InlineKlass* InstanceKlass::get_inline_type_field_klass(int idx) const {
72 assert(has_inlined_fields(), "Sanity checking");
73 assert(idx < java_fields_count(), "IOOB");
74 InlineKlass* k = inline_layout_info(idx).klass();
75 assert(k != nullptr, "Should always be set before being read");
76 return k;
77 }
78
79 inline InlineKlass* InstanceKlass::get_inline_type_field_klass_or_null(int idx) const {
80 assert(has_inlined_fields(), "Sanity checking");
81 assert(idx < java_fields_count(), "IOOB");
82 InlineKlass* k = inline_layout_info(idx).klass();
83 return k;
84 }
85
86 inline ObjArrayKlass* InstanceKlass::array_klasses_acquire() const {
87 return AtomicAccess::load_acquire(&_array_klasses);
88 }
89
90 inline void InstanceKlass::release_set_array_klasses(ObjArrayKlass* k) {
91 AtomicAccess::release_store(&_array_klasses, k);
92 }
93
94 // The iteration over the oops in objects is a hot path in the GC code.
95 // By force inlining the following functions, we get similar GC performance
96 // as the previous macro based implementation.
97
98 template <typename T, class OopClosureType>
99 ALWAYSINLINE void InstanceKlass::oop_oop_iterate_oop_map(OopMapBlock* map, oop obj, OopClosureType* closure) {
100 T* p = obj->field_addr<T>(map->offset());
101 T* const end = p + map->count();
102
103 for (; p < end; ++p) {
104 Devirtualizer::do_oop(closure, p);
105 }
181
182 template <typename T, class OopClosureType>
183 ALWAYSINLINE void InstanceKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) {
184 assert(!Devirtualizer::do_metadata(closure),
185 "Code to handle metadata is not implemented");
186
187 oop_oop_iterate_oop_maps_reverse<T>(obj, closure);
188 }
189
190 template <typename T, class OopClosureType>
191 ALWAYSINLINE void InstanceKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
192 if (Devirtualizer::do_metadata(closure)) {
193 if (mr.contains(obj)) {
194 Devirtualizer::do_klass(closure, this);
195 }
196 }
197
198 oop_oop_iterate_oop_maps_bounded<T>(obj, closure, mr);
199 }
200
201 template<typename T, typename TConsumerType>
202 inline void InstanceKlass::print_array_on(outputStream* st, Array<T>* array, TConsumerType elem_printer) {
203 if (array == nullptr) { st->print_cr("nullptr"); return; }
204 array->print_value_on(st); st->cr();
205 if (Verbose || WizardMode) {
206 for (int i = 0; i < array->length(); i++) {
207 st->print("%d : ", i);
208 elem_printer(st, array->at(i));
209 st->cr();
210 }
211 }
212 }
213
214 #endif // SHARE_OOPS_INSTANCEKLASS_INLINE_HPP
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