1 /* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
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22 */
23
24 #ifndef SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP
25 #define SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP
26
27 #include "classfile/javaClasses.hpp"
28 #include "oops/instanceKlass.inline.hpp"
29 #include "oops/instanceMirrorKlass.hpp"
30 #include "oops/oop.inline.hpp"
31 #include "utilities/debug.hpp"
32 #include "utilities/globalDefinitions.hpp"
33 #include "utilities/macros.hpp"
34
35 template <bool nv, typename T, class OopClosureType>
36 void InstanceMirrorKlass::oop_oop_iterate_statics_specialized(oop obj, OopClosureType* closure) {
37 T* p = (T*)start_of_static_fields(obj);
38 T* const end = p + java_lang_Class::static_oop_field_count(obj);
39
40 for (; p < end; ++p) {
41 Devirtualizer<nv>::do_oop(closure, p);
42 }
43 }
44
45 template <bool nv, class OopClosureType>
46 void InstanceMirrorKlass::oop_oop_iterate_statics(oop obj, OopClosureType* closure) {
47 if (UseCompressedOops) {
48 oop_oop_iterate_statics_specialized<nv, narrowOop>(obj, closure);
49 } else {
50 oop_oop_iterate_statics_specialized<nv, oop>(obj, closure);
51 }
52 }
53
54 template <bool nv, class OopClosureType>
55 int InstanceMirrorKlass::oop_oop_iterate(oop obj, OopClosureType* closure) {
56 InstanceKlass::oop_oop_iterate<nv>(obj, closure);
57
58 if (Devirtualizer<nv>::do_metadata(closure)) {
59 Klass* klass = java_lang_Class::as_Klass(obj);
60 // We'll get NULL for primitive mirrors.
61 if (klass != NULL) {
62 Devirtualizer<nv>::do_klass(closure, klass);
63 }
64 }
65
66 oop_oop_iterate_statics<nv>(obj, closure);
67
68 return oop_size(obj);
69 }
70
71 #if INCLUDE_ALL_GCS
72 template <bool nv, class OopClosureType>
73 int InstanceMirrorKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) {
74 InstanceKlass::oop_oop_iterate_reverse<nv>(obj, closure);
75
76 InstanceMirrorKlass::oop_oop_iterate_statics<nv>(obj, closure);
77
78 return oop_size(obj);
79 }
80 #endif
81
82 template <bool nv, typename T, class OopClosureType>
83 void InstanceMirrorKlass::oop_oop_iterate_statics_specialized_bounded(oop obj,
84 OopClosureType* closure,
85 MemRegion mr) {
86 T* p = (T*)start_of_static_fields(obj);
87 T* end = p + java_lang_Class::static_oop_field_count(obj);
88
89 T* const l = (T*)mr.start();
90 T* const h = (T*)mr.end();
91 assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 &&
92 mask_bits((intptr_t)h, sizeof(T)-1) == 0,
93 "bounded region must be properly aligned");
94
95 if (p < l) {
96 p = l;
97 }
98 if (end > h) {
99 end = h;
100 }
101
102 for (;p < end; ++p) {
103 Devirtualizer<nv>::do_oop(closure, p);
104 }
105 }
106
107 template <bool nv, class OopClosureType>
108 void InstanceMirrorKlass::oop_oop_iterate_statics_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
109 if (UseCompressedOops) {
110 oop_oop_iterate_statics_specialized_bounded<nv, narrowOop>(obj, closure, mr);
111 } else {
112 oop_oop_iterate_statics_specialized_bounded<nv, oop>(obj, closure, mr);
113 }
114 }
115
116 template <bool nv, class OopClosureType>
117 int InstanceMirrorKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
118 InstanceKlass::oop_oop_iterate_bounded<nv>(obj, closure, mr);
119
120 if (Devirtualizer<nv>::do_metadata(closure)) {
121 if (mr.contains(obj)) {
122 Klass* klass = java_lang_Class::as_Klass(obj);
123 // We'll get NULL for primitive mirrors.
124 if (klass != NULL) {
125 Devirtualizer<nv>::do_klass(closure, klass);
126 }
127 }
128 }
129
130 oop_oop_iterate_statics_bounded<nv>(obj, closure, mr);
131
132 return oop_size(obj);
133 }
134
135
136 #define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
137 \
138 int InstanceMirrorKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
139 return oop_oop_iterate<nvs_to_bool(nv_suffix)>(obj, closure); \
140 }
141
142 #if INCLUDE_ALL_GCS
143 #define InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
144 \
145 int InstanceMirrorKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
146 return oop_oop_iterate_reverse<nvs_to_bool(nv_suffix)>(obj, closure); \
147 }
148 #else
149 #define InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
150 #endif
151
152
153 #define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
154 \
155 int InstanceMirrorKlass::oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* closure, MemRegion mr) { \
156 return oop_oop_iterate_bounded<nvs_to_bool(nv_suffix)>(obj, closure, mr); \
157 }
158
159 #define ALL_INSTANCE_MIRROR_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
160 InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN( OopClosureType, nv_suffix) \
161 InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m( OopClosureType, nv_suffix) \
162 InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
163
164 #endif // SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP