1 /*
2 * Copyright (c) 2018, 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 *
23 */
24
25 #ifndef SHARE_VM_OOPS_FLATARRAYOOP_INLINE_HPP
26 #define SHARE_VM_OOPS_FLATARRAYOOP_INLINE_HPP
27
28 #include "oops/flatArrayOop.hpp"
29
30 #include "classfile/vmSymbols.hpp"
31 #include "oops/access.inline.hpp"
32 #include "oops/flatArrayKlass.hpp"
33 #include "oops/inlineKlass.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "runtime/globals.hpp"
36
37 inline void* flatArrayOopDesc::base() const { return arrayOopDesc::base(T_FLAT_ELEMENT); }
38
39 inline void* flatArrayOopDesc::value_at_addr(int index, jint lh) const {
40 assert(is_within_bounds(index), "index out of bounds");
41
42 address array_base = (address) base();
43 ptrdiff_t offset = (ptrdiff_t) index << Klass::layout_helper_log2_element_size(lh);
44 address addr = array_base + offset;
45 assert(addr >= array_base, "must be");
46 return (void*) addr;
47 }
48
49 inline int flatArrayOopDesc::object_size(int lh) const {
50 return object_size(lh, length());
51 }
52
53 inline oop flatArrayOopDesc::obj_at(int index) const {
54 EXCEPTION_MARK;
55 return obj_at(index, THREAD);
56 }
57
58 inline oop flatArrayOopDesc::obj_at(int index, TRAPS) const {
59 assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
60 FlatArrayKlass* faklass = FlatArrayKlass::cast(klass());
61 InlineKlass* vk = InlineKlass::cast(faklass->element_klass());
62 char* this_oop = (char*) (oopDesc*) this;
63 char* val = (char*) value_at_addr(index, faklass->layout_helper());
64 ptrdiff_t offset = val - this_oop;
65 oop res = vk->read_payload_from_addr((oopDesc*)this, offset, faklass->layout_kind(), CHECK_NULL);
66 return res;
67 }
68
69 inline jboolean flatArrayOopDesc::null_marker_of_obj_at(int index) const {
70 EXCEPTION_MARK;
71 return null_marker_of_obj_at(index, THREAD);
72 }
73
74 inline jboolean flatArrayOopDesc::null_marker_of_obj_at(int index, TRAPS) const {
75 assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
76 FlatArrayKlass* faklass = FlatArrayKlass::cast(klass());
77 InlineKlass* vk = InlineKlass::cast(faklass->element_klass());
78 char* this_oop = (char*) (oopDesc*) this;
79 char* val = (char*) value_at_addr(index, faklass->layout_helper());
80 ptrdiff_t offset = val - this_oop + (ptrdiff_t)vk->null_marker_offset_in_payload();
81 return bool_field(offset);
82 }
83
84 inline void flatArrayOopDesc::obj_at_put(int index, oop value) {
85 EXCEPTION_MARK; // What if the caller is not a Java Thread?
86 obj_at_put(index, value, THREAD);
87 }
88
89 inline void flatArrayOopDesc::obj_at_put(int index, oop value, TRAPS) {
90 assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
91 FlatArrayKlass* faklass = FlatArrayKlass::cast(klass());
92 InlineKlass* vk = InlineKlass::cast(faklass->element_klass());
93 if (value != nullptr) {
94 if (value->klass() != vk) {
95 THROW(vmSymbols::java_lang_ArrayStoreException());
96 }
97 } else if(is_null_free_array()) {
98 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Cannot store null in a null-restricted array");
99 }
100 vk->write_value_to_addr(value, value_at_addr(index, faklass->layout_helper()), faklass->layout_kind(), CHECK);
101 }
102
103 #endif // SHARE_VM_OOPS_FLATARRAYOOP_INLINE_HPP