1 /*
2 * Copyright (c) 1997, 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.
22 *
23 */
24
25 #include "classfile/javaClasses.hpp"
26 #include "classfile/symbolTable.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "gc/shared/collectedHeap.inline.hpp"
29 #include "memory/oopFactory.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "memory/universe.hpp"
32 #include "oops/arrayKlass.hpp"
33 #include "oops/flatArrayKlass.hpp"
34 #include "oops/flatArrayOop.hpp"
35 #include "oops/flatArrayOop.inline.hpp"
36 #include "oops/instanceKlass.hpp"
37 #include "oops/instanceOop.hpp"
38 #include "oops/objArrayKlass.hpp"
39 #include "oops/objArrayOop.hpp"
40 #include "oops/objArrayOop.inline.hpp"
41 #include "oops/oop.inline.hpp"
42 #include "oops/refArrayKlass.hpp"
43 #include "oops/typeArrayKlass.hpp"
44 #include "oops/typeArrayOop.inline.hpp"
45 #include "runtime/handles.inline.hpp"
46 #include "utilities/utf8.hpp"
47
48 typeArrayOop oopFactory::new_boolArray(int length, TRAPS) {
49 return Universe::boolArrayKlass()->allocate_instance(length, THREAD);
50 }
51
52 typeArrayOop oopFactory::new_charArray(int length, TRAPS) {
53 return Universe::charArrayKlass()->allocate_instance(length, THREAD);
54 }
55
56 typeArrayOop oopFactory::new_floatArray(int length, TRAPS) {
57 return Universe::floatArrayKlass()->allocate_instance(length, THREAD);
58 }
59
60 typeArrayOop oopFactory::new_doubleArray(int length, TRAPS) {
61 return Universe::doubleArrayKlass()->allocate_instance(length, THREAD);
62 }
63
64 typeArrayOop oopFactory::new_byteArray(int length, TRAPS) {
65 return Universe::byteArrayKlass()->allocate_instance(length, THREAD);
66 }
67
68 typeArrayOop oopFactory::new_shortArray(int length, TRAPS) {
69 return Universe::shortArrayKlass()->allocate_instance(length, THREAD);
70 }
71
72 typeArrayOop oopFactory::new_intArray(int length, TRAPS) {
73 return Universe::intArrayKlass()->allocate_instance(length, THREAD);
74 }
75
76 typeArrayOop oopFactory::new_longArray(int length, TRAPS) {
77 return Universe::longArrayKlass()->allocate_instance(length, THREAD);
78 }
79
80 // create java.lang.Object[]
81 objArrayOop oopFactory::new_objectArray(int length, TRAPS) {
82 return Universe::objectArrayKlass()->allocate_instance(length, ArrayKlass::ArrayProperties::DEFAULT, THREAD);
83 }
84
85 typeArrayOop oopFactory::new_charArray(const char* utf8_str, TRAPS) {
86 int length = utf8_str == nullptr ? 0 : UTF8::unicode_length(utf8_str);
87 typeArrayOop result = new_charArray(length, CHECK_NULL);
88 if (length > 0) {
89 UTF8::convert_to_unicode(utf8_str, result->char_at_addr(0), length);
90 }
91 return result;
92 }
93
94 typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
95 TypeArrayKlass* klass = Universe::typeArrayKlass(type);
96 return klass->allocate_instance(length, THREAD);
97 }
98
99 // Create a Java array that points to Symbol.
100 // As far as Java code is concerned, a Symbol array is either an array of
101 // int or long depending on pointer size. Only stack trace elements in Throwable use
102 // this. They cast Symbol* into this type.
103 typeArrayOop oopFactory::new_symbolArray(int length, TRAPS) {
104 BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT);
105 return new_typeArray(type, length, THREAD);
106 }
107
108 typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) {
109 TypeArrayKlass* klass = Universe::typeArrayKlass(type);
110 return klass->allocate_common(length, false, THREAD);
111 }
112
113 objArrayOop oopFactory::new_objArray(Klass* klass, int length, ArrayKlass::ArrayProperties properties, TRAPS) {
114 assert(!klass->is_array_klass() || properties == ArrayKlass::ArrayProperties::DEFAULT, "properties only apply to single dimension arrays");
115 ArrayKlass* ak = klass->array_klass(CHECK_NULL);
116 return ObjArrayKlass::cast(ak)->allocate_instance(length, properties, THREAD);
117 }
118
119 objArrayOop oopFactory::new_refArray(Klass* array_klass, int length, TRAPS) {
120 RefArrayKlass* rak = RefArrayKlass::cast(array_klass); // asserts is refArray_klass().
121 return rak->allocate_instance(length, rak->properties(), THREAD);
122 }
123
124 objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) {
125 return new_objArray(klass, length, ArrayKlass::ArrayProperties::DEFAULT, THREAD);
126 }
127
128 flatArrayOop oopFactory::new_flatArray(Klass* k, int length, ArrayKlass::ArrayProperties props, LayoutKind lk, TRAPS) {
129 InlineKlass* klass = InlineKlass::cast(k);
130
131 ArrayKlass* array_type = klass->array_klass(CHECK_NULL);
132 ObjArrayKlass* oak = ObjArrayKlass::cast(array_type)->klass_with_properties(props, CHECK_NULL);
133
134 assert(oak->is_flatArray_klass(), "Expected to be");
135 assert(FlatArrayKlass::cast(oak)->layout_kind() == lk, "Unexpected layout kind");
136
137 flatArrayOop oop = (flatArrayOop)FlatArrayKlass::cast(oak)->allocate_instance(length, props, CHECK_NULL);
138 assert(oop == nullptr || oop->is_flatArray(), "sanity");
139 assert(oop == nullptr || oop->klass()->is_flatArray_klass(), "sanity");
140
141 return oop;
142 }
143
144 objArrayHandle oopFactory::new_objArray_handle(Klass* klass, int length, TRAPS) {
145 objArrayOop obj = new_objArray(klass, length, CHECK_(objArrayHandle()));
146 return objArrayHandle(THREAD, obj);
147 }