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/flatArrayKlass.hpp"
33 #include "oops/flatArrayOop.inline.hpp"
34 #include "oops/flatArrayOop.hpp"
35 #include "oops/instanceKlass.hpp"
36 #include "oops/instanceOop.hpp"
37 #include "oops/objArrayKlass.hpp"
38 #include "oops/objArrayOop.inline.hpp"
39 #include "oops/objArrayOop.hpp"
40 #include "oops/oop.inline.hpp"
41 #include "oops/typeArrayKlass.hpp"
42 #include "oops/typeArrayOop.inline.hpp"
43 #include "runtime/handles.inline.hpp"
44 #include "utilities/utf8.hpp"
45
46 typeArrayOop oopFactory::new_boolArray(int length, TRAPS) {
47 return Universe::boolArrayKlass()->allocate(length, THREAD);
48 }
49
50 typeArrayOop oopFactory::new_charArray(int length, TRAPS) {
51 return Universe::charArrayKlass()->allocate(length, THREAD);
52 }
53
54 typeArrayOop oopFactory::new_floatArray(int length, TRAPS) {
55 return Universe::floatArrayKlass()->allocate(length, THREAD);
56 }
57
58 typeArrayOop oopFactory::new_doubleArray(int length, TRAPS) {
59 return Universe::doubleArrayKlass()->allocate(length, THREAD);
60 }
61
62 typeArrayOop oopFactory::new_byteArray(int length, TRAPS) {
63 return Universe::byteArrayKlass()->allocate(length, THREAD);
64 }
65
66 typeArrayOop oopFactory::new_shortArray(int length, TRAPS) {
67 return Universe::shortArrayKlass()->allocate(length, THREAD);
68 }
69
70 typeArrayOop oopFactory::new_intArray(int length, TRAPS) {
71 return Universe::intArrayKlass()->allocate(length, THREAD);
72 }
73
74 typeArrayOop oopFactory::new_longArray(int length, TRAPS) {
75 return Universe::longArrayKlass()->allocate(length, THREAD);
76 }
77
78 // create java.lang.Object[]
79 objArrayOop oopFactory::new_objectArray(int length, TRAPS) {
80 assert(Universe::objectArrayKlass() != nullptr, "Too early?");
81 return Universe::objectArrayKlass()->allocate(length, THREAD);
82 }
83
84 typeArrayOop oopFactory::new_charArray(const char* utf8_str, TRAPS) {
85 int length = utf8_str == nullptr ? 0 : UTF8::unicode_length(utf8_str);
86 typeArrayOop result = new_charArray(length, CHECK_NULL);
87 if (length > 0) {
88 UTF8::convert_to_unicode(utf8_str, result->char_at_addr(0), length);
89 }
90 return result;
91 }
92
93 typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
94 TypeArrayKlass* klass = Universe::typeArrayKlass(type);
95 return klass->allocate(length, THREAD);
96 }
97
98 // Create a Java array that points to Symbol.
99 // As far as Java code is concerned, a Symbol array is either an array of
100 // int or long depending on pointer size. Only stack trace elements in Throwable use
101 // this. They cast Symbol* into this type.
102 typeArrayOop oopFactory::new_symbolArray(int length, TRAPS) {
103 BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT);
104 return new_typeArray(type, length, THREAD);
105 }
106
107 typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) {
108 TypeArrayKlass* klass = Universe::typeArrayKlass(type);
109 return klass->allocate_common(length, false, THREAD);
110 }
111
112
113 objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) {
114 assert(klass->is_klass(), "must be instance class");
115 if (klass->is_array_klass()) {
116 return ArrayKlass::cast(klass)->allocate_arrayArray(1, length, THREAD);
117 } else {
118 return InstanceKlass::cast(klass)->allocate_objArray(1, length, THREAD);
119 }
120 }
121
122 objArrayOop oopFactory::new_null_free_objArray(Klass* k, int length, TRAPS) {
123 InlineKlass* klass = InlineKlass::cast(k);
124 ObjArrayKlass* array_klass = klass->null_free_reference_array(CHECK_NULL);
125
126 assert(array_klass->is_objArray_klass(), "Must be");
127 assert(array_klass->is_null_free_array_klass(), "Must be");
128
129 objArrayOop oop = array_klass->allocate(length, CHECK_NULL);
130
131 assert(oop == nullptr || oop->is_objArray(), "Sanity");
132 assert(oop == nullptr || oop->klass()->is_null_free_array_klass(), "Sanity");
133
134 return oop;
135 }
136
137 flatArrayOop oopFactory::new_flatArray(Klass* k, int length, LayoutKind lk, TRAPS) {
138 InlineKlass* klass = InlineKlass::cast(k);
139 Klass* array_klass = klass->flat_array_klass(lk, CHECK_NULL);
140
141 assert(array_klass->is_flatArray_klass(), "Must be");
142
143 flatArrayOop oop = FlatArrayKlass::cast(array_klass)->allocate(length, lk, CHECK_NULL);
144 assert(oop == nullptr || oop->is_flatArray(), "sanity");
145 assert(oop == nullptr || oop->klass()->is_flatArray_klass(), "sanity");
146
147 return oop;
148 }
149
150 objArrayHandle oopFactory::copy_flatArray_to_objArray(flatArrayHandle array, TRAPS) {
151 int len = array->length();
152 FlatArrayKlass* vak = FlatArrayKlass::cast(array->klass());
153 objArrayOop oarray = new_objectArray(array->length(), CHECK_(objArrayHandle()));
154 objArrayHandle oarrayh(THREAD, oarray);
155 vak->copy_array(array(), 0, oarrayh(), 0, len, CHECK_(objArrayHandle()));
156 return oarrayh;
157 }
158
159 objArrayHandle oopFactory::ensure_objArray(oop array, TRAPS) {
160 if (array != nullptr && array->is_flatArray()) {
161 return copy_flatArray_to_objArray(flatArrayHandle(THREAD, flatArrayOop(array)), THREAD);
162 } else {
163 return objArrayHandle(THREAD, objArrayOop(array));
164 }
165 }
166
167 objArrayHandle oopFactory::new_objArray_handle(Klass* klass, int length, TRAPS) {
168 objArrayOop obj = new_objArray(klass, length, CHECK_(objArrayHandle()));
169 return objArrayHandle(THREAD, obj);
170 }