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/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 void flatArrayOopDesc::obj_at_put(int index, oop value) {
70   EXCEPTION_MARK;                                 // What if the caller is not a Java Thread?
71   obj_at_put(index, value, THREAD);
72 }
73 
74 inline void flatArrayOopDesc::obj_at_put(int index, oop value, TRAPS) {
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   if (value != nullptr) {
79     if (value->klass() != vk) {
80       THROW(vmSymbols::java_lang_ArrayStoreException());
81     }
82   } else if(is_null_free_array()) {
83     THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Cannot store null in a null-restricted array");
84   }
85   vk->write_value_to_addr(value, value_at_addr(index, faklass->layout_helper()), faklass->layout_kind(), true, CHECK);
86 }
87 
88 #endif // SHARE_VM_OOPS_FLATARRAYOOP_INLINE_HPP