1 /*
 2  * Copyright (c) 2025, 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).
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15  * You should have received a copy of the GNU General Public License version
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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
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24 
25 #ifndef SHARE_OOPS_REFARRAYOOP_INLINE_HPP
26 #define SHARE_OOPS_REFARRAYOOP_INLINE_HPP
27 
28 #include "oops/refArrayOop.hpp"
29 
30 #include "oops/access.hpp"
31 #include "oops/arrayOop.hpp"
32 #include "oops/oop.inline.hpp"
33 #include "runtime/globals.hpp"
34 
35 inline HeapWord *refArrayOopDesc::base() const {
36   return (HeapWord *)arrayOopDesc::base(T_OBJECT);
37 }
38 
39 inline refArrayOop refArrayOopDesc::cast(oop o) {
40   assert(o->is_refArray(), "Must be a refArray");
41   return (refArrayOop)o;
42 }
43 
44 template <class T> T *refArrayOopDesc::obj_at_addr(int index) const {
45   assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
46   return &((T *)base())[index];
47 }
48 
49 inline oop refArrayOopDesc::obj_at(int index) const {
50   assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
51   ptrdiff_t offset = UseCompressedOops ? obj_at_offset<narrowOop>(index)
52                                        : obj_at_offset<oop>(index);
53   return HeapAccess<IS_ARRAY>::oop_load_at(as_oop(), offset);
54 }
55 
56 inline oop refArrayOopDesc::obj_at(int index, TRAPS) const {
57   return obj_at(index);
58 }
59 
60 inline void refArrayOopDesc::obj_at_put(int index, oop value) {
61   assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
62   assert(!is_null_free_array() || value != nullptr, "Trying to write null to a null free array");
63   ptrdiff_t offset = UseCompressedOops ? obj_at_offset<narrowOop>(index)
64                                        : obj_at_offset<oop>(index);
65   HeapAccess<IS_ARRAY>::oop_store_at(as_oop(), offset, value);
66 }
67 
68 inline void refArrayOopDesc::obj_at_put(int index, oop value, TRAPS) {
69   if (is_null_free_array() && value == nullptr) {
70     THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Cannot store null in a null-restricted array");
71   }
72   obj_at_put(index, value);
73 }
74 
75 #endif // SHARE_OOPS_REFARRAYOOP_INLINE_HPP