1 /*
 2  * Copyright (c) 2018, 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
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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/inlineKlass.inline.hpp"
33 #include "oops/oop.inline.hpp"
34 #include "runtime/globals.hpp"
35 
36 inline void* flatArrayOopDesc::base() const { return arrayOopDesc::base(T_FLAT_ELEMENT); }
37 
38 inline void* flatArrayOopDesc::value_at_addr(int index, jint lh) const {
39   assert(is_within_bounds(index), "index out of bounds");
40 
41   address addr = (address) base();
42   addr += (index << Klass::layout_helper_log2_element_size(lh));
43   return (void*) addr;
44 }
45 
46 inline int flatArrayOopDesc::object_size(int lh) const {
47   return object_size(lh, length());
48 }
49 
50 inline oop flatArrayOopDesc::obj_at(int index) const {
51   EXCEPTION_MARK;
52   return obj_at(index, THREAD);
53 }
54 
55 inline oop flatArrayOopDesc::obj_at(int index, TRAPS) const {
56   assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
57   FlatArrayKlass* faklass = FlatArrayKlass::cast(klass());
58   InlineKlass* vk = InlineKlass::cast(faklass->element_klass());
59   int offset = ((char*)value_at_addr(index, faklass->layout_helper())) - ((char*)(oopDesc*)this);
60   oop res = vk->read_payload_from_addr((oopDesc*)this, offset, faklass->layout_kind(), CHECK_NULL);
61   return res;
62 }
63 
64 inline void flatArrayOopDesc::obj_at_put(int index, oop value) {
65   EXCEPTION_MARK;                                 // What if the caller is not a Java Thread?
66   obj_at_put(index, value, THREAD);
67 }
68 
69 inline void flatArrayOopDesc::obj_at_put(int index, oop value, TRAPS) {
70   assert(is_within_bounds(index), "index %d out of bounds %d", index, length());
71   FlatArrayKlass* faklass = FlatArrayKlass::cast(klass());
72   InlineKlass* vk = InlineKlass::cast(faklass->element_klass());
73   if (value != nullptr) {
74     if (value->klass() != vk) {
75       THROW(vmSymbols::java_lang_ArrayStoreException());
76     }
77   } else if(is_null_free_array()) {
78     THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Cannot store null in a null-restricted array");
79   }
80   vk->write_value_to_addr(value, value_at_addr(index, faklass->layout_helper()), faklass->layout_kind(), true, CHECK);
81 }
82 
83 #endif // SHARE_VM_OOPS_FLATARRAYOOP_INLINE_HPP