1 /*
2 * Copyright (c) 2010, 2015, 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.
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23 */
24
25 #ifndef SHARE_VM_OOPS_OBJARRAYKLASS_INLINE_HPP
26 #define SHARE_VM_OOPS_OBJARRAYKLASS_INLINE_HPP
27
28 #include "memory/memRegion.hpp"
29 #include "memory/iterator.inline.hpp"
30 #include "oops/arrayKlass.hpp"
31 #include "oops/klass.hpp"
32 #include "oops/objArrayKlass.hpp"
33 #include "oops/objArrayOop.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "utilities/macros.hpp"
36
37 template <bool nv, typename T, class OopClosureType>
38 void ObjArrayKlass::oop_oop_iterate_elements_specialized(objArrayOop a, OopClosureType* closure) {
39 T* p = (T*)a->base();
40 T* const end = p + a->length();
41
42 for (;p < end; p++) {
43 Devirtualizer<nv>::do_oop(closure, p);
44 }
45 }
46
47 template <bool nv, typename T, class OopClosureType>
48 void ObjArrayKlass::oop_oop_iterate_elements_specialized_bounded(
49 objArrayOop a, OopClosureType* closure, void* low, void* high) {
50
51 T* const l = (T*)low;
52 T* const h = (T*)high;
53
54 T* p = (T*)a->base();
55 T* end = p + a->length();
56
57 if (p < l) {
58 p = l;
59 }
60 if (end > h) {
61 end = h;
62 }
63
64 for (;p < end; ++p) {
65 Devirtualizer<nv>::do_oop(closure, p);
66 }
67 }
68
69 template <bool nv, class OopClosureType>
70 void ObjArrayKlass::oop_oop_iterate_elements(objArrayOop a, OopClosureType* closure) {
71 if (UseCompressedOops) {
72 oop_oop_iterate_elements_specialized<nv, narrowOop>(a, closure);
73 } else {
74 oop_oop_iterate_elements_specialized<nv, oop>(a, closure);
75 }
76 }
77
78 template <bool nv, class OopClosureType>
79 void ObjArrayKlass::oop_oop_iterate_elements_bounded(objArrayOop a, OopClosureType* closure, MemRegion mr) {
80 if (UseCompressedOops) {
81 oop_oop_iterate_elements_specialized_bounded<nv, narrowOop>(a, closure, mr.start(), mr.end());
82 } else {
83 oop_oop_iterate_elements_specialized_bounded<nv, oop>(a, closure, mr.start(), mr.end());
84 }
85 }
86
87 template <bool nv, typename OopClosureType>
88 int ObjArrayKlass::oop_oop_iterate(oop obj, OopClosureType* closure) {
89 assert (obj->is_array(), "obj must be array");
90 objArrayOop a = objArrayOop(obj);
91
92 // Get size before changing pointers.
93 // Don't call size() or oop_size() since that is a virtual call.
94 int size = a->object_size();
95 if (Devirtualizer<nv>::do_metadata(closure)) {
96 Devirtualizer<nv>::do_klass(closure, obj->klass());
97 }
98
99 oop_oop_iterate_elements<nv>(a, closure);
100
101 return size;
102 }
103
104 template <bool nv, typename OopClosureType>
105 int ObjArrayKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
106 assert(obj->is_array(), "obj must be array");
107 objArrayOop a = objArrayOop(obj);
108
109 // Get size before changing pointers.
110 // Don't call size() or oop_size() since that is a virtual call
111 int size = a->object_size();
112
113 if (Devirtualizer<nv>::do_metadata(closure)) {
114 Devirtualizer<nv>::do_klass(closure, a->klass());
115 }
116
117 oop_oop_iterate_elements_bounded<nv>(a, closure, mr);
118
119 return size;
120 }
121
122 template <bool nv, typename T, class OopClosureType>
123 void ObjArrayKlass::oop_oop_iterate_range_specialized(objArrayOop a, OopClosureType* closure, int start, int end) {
124 if (Devirtualizer<nv>::do_metadata(closure)) {
125 Devirtualizer<nv>::do_klass(closure, a->klass());
126 }
127
128 T* low = start == 0 ? cast_from_oop<T*>(a) : a->obj_at_addr<T>(start);
129 T* high = (T*)a->base() + end;
130
131 oop_oop_iterate_elements_specialized_bounded<nv, T>(a, closure, low, high);
132 }
133
134 // Like oop_oop_iterate but only iterates over a specified range and only used
135 // for objArrayOops.
136 template <bool nv, class OopClosureType>
137 int ObjArrayKlass::oop_oop_iterate_range(oop obj, OopClosureType* closure, int start, int end) {
138 assert(obj->is_array(), "obj must be array");
139 objArrayOop a = objArrayOop(obj);
140
141 // Get size before changing pointers.
142 // Don't call size() or oop_size() since that is a virtual call
143 int size = a->object_size();
144
145 if (UseCompressedOops) {
146 oop_oop_iterate_range_specialized<nv, narrowOop>(a, closure, start, end);
147 } else {
148 oop_oop_iterate_range_specialized<nv, oop>(a, closure, start, end);
149 }
150
151 return size;
152 }
153
154 #define ALL_OBJ_ARRAY_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
155 OOP_OOP_ITERATE_DEFN( ObjArrayKlass, OopClosureType, nv_suffix) \
156 OOP_OOP_ITERATE_DEFN_m( ObjArrayKlass, OopClosureType, nv_suffix) \
157 OOP_OOP_ITERATE_RANGE_DEFN( ObjArrayKlass, OopClosureType, nv_suffix) \
158 OOP_OOP_ITERATE_NO_BACKWARDS_DEFN(ObjArrayKlass, OopClosureType, nv_suffix)
159
160 #endif // SHARE_VM_OOPS_OBJARRAYKLASS_INLINE_HPP