1 /*
2 * Copyright (c) 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.
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23 */
24
25 #ifndef SHARE_OOPS_REFARRAYKLASS_INLINE_HPP
26 #define SHARE_OOPS_REFARRAYKLASS_INLINE_HPP
27
28 #include "oops/refArrayKlass.hpp"
29
30 #include "memory/memRegion.hpp"
31 #include "oops/arrayKlass.hpp"
32 #include "oops/arrayOop.hpp"
33 #include "oops/klass.hpp"
34 #include "oops/refArrayOop.inline.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "utilities/devirtualizer.inline.hpp"
37 #include "utilities/macros.hpp"
38
39 template <typename T, class OopClosureType>
40 void RefArrayKlass::oop_oop_iterate_elements(refArrayOop a,
41 OopClosureType *closure) {
42 T *p = (T *)a->base();
43 T *const end = p + a->length();
44
45 for (; p < end; p++) {
46 Devirtualizer::do_oop(closure, p);
47 }
48 }
49
50 template <typename T, class OopClosureType>
51 void RefArrayKlass::oop_oop_iterate_elements_bounded(refArrayOop a,
52 OopClosureType *closure,
53 void *low, void *high) {
54
55 T *const l = (T *)low;
56 T *const h = (T *)high;
57
58 T *p = (T *)a->base();
59 T *end = p + a->length();
60
61 if (p < l) {
62 p = l;
63 }
64 if (end > h) {
65 end = h;
66 }
67
68 for (; p < end; ++p) {
69 Devirtualizer::do_oop(closure, p);
70 }
71 }
72
73 template <typename T, typename OopClosureType>
74 void RefArrayKlass::oop_oop_iterate(oop obj, OopClosureType *closure) {
75 assert(obj->is_array(), "obj must be array");
76 refArrayOop a = refArrayOop(obj);
77
78 if (Devirtualizer::do_metadata(closure)) {
79 Devirtualizer::do_klass(closure, obj->klass());
80 }
81
82 oop_oop_iterate_elements<T>(a, closure);
83 }
84
85 template <typename T, typename OopClosureType>
86 void RefArrayKlass::oop_oop_iterate_reverse(oop obj, OopClosureType *closure) {
87 // No reverse implementation ATM.
88 oop_oop_iterate<T>(obj, closure);
89 }
90
91 template <typename T, typename OopClosureType>
92 void RefArrayKlass::oop_oop_iterate_bounded(oop obj, OopClosureType *closure,
93 MemRegion mr) {
94 assert(obj->is_array(), "obj must be array");
95 refArrayOop a = refArrayOop(obj);
96
97 if (Devirtualizer::do_metadata(closure)) {
98 Devirtualizer::do_klass(closure, a->klass());
99 }
100
101 oop_oop_iterate_elements_bounded<T>(a, closure, mr.start(), mr.end());
102 }
103
104 // Like oop_oop_iterate but only iterates over a specified range and only used
105 // for objArrayOops.
106 template <typename T, class OopClosureType>
107 void RefArrayKlass::oop_oop_iterate_range(refArrayOop a,
108 OopClosureType *closure, int start,
109 int end) {
110 T *low = (T *)a->base() + start;
111 T *high = (T *)a->base() + end;
112
113 oop_oop_iterate_elements_bounded<T>(a, closure, low, high);
114 }
115
116 // Placed here to resolve include cycle between objArrayKlass.inline.hpp and
117 // objArrayOop.inline.hpp
118 template <typename OopClosureType>
119 void refArrayOopDesc::oop_iterate_range(OopClosureType *blk, int start,
120 int end) {
121 if (UseCompressedOops) {
122 ((RefArrayKlass *)klass())
123 ->oop_oop_iterate_range<narrowOop>(this, blk, start, end);
124 } else {
125 ((RefArrayKlass *)klass())
126 ->oop_oop_iterate_range<oop>(this, blk, start, end);
127 }
128 }
129
130 #endif // SHARE_OOPS_REFARRAYKLASS_INLINE_HPP