1 /*
2 * Copyright (c) 1997, 2018, 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 "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/symbolTable.hpp"
28 #include "classfile/systemDictionary.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "gc/shared/collectedHeap.inline.hpp"
31 #include "memory/oopFactory.hpp"
32 #include "memory/resourceArea.hpp"
33 #include "memory/universe.hpp"
34 #include "oops/instanceKlass.hpp"
35 #include "oops/instanceOop.hpp"
36 #include "oops/objArrayOop.inline.hpp"
37 #include "oops/objArrayOop.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "oops/typeArrayOop.inline.hpp"
40 #include "oops/valueKlass.hpp"
41 #include "oops/valueArrayKlass.hpp"
42 #include "runtime/handles.inline.hpp"
43
44
45 typeArrayOop oopFactory::new_charArray(const char* utf8_str, TRAPS) {
46 int length = utf8_str == NULL ? 0 : UTF8::unicode_length(utf8_str);
47 typeArrayOop result = new_charArray(length, CHECK_NULL);
48 if (length > 0) {
49 UTF8::convert_to_unicode(utf8_str, result->char_at_addr(0), length);
50 }
51 return result;
52 }
53
54 typeArrayOop oopFactory::new_tenured_charArray(int length, TRAPS) {
55 return TypeArrayKlass::cast(Universe::charArrayKlassObj())->allocate(length, THREAD);
56 }
57
58 typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
59 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
60 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
61 typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
62 return result;
63 }
64
65 // Create a Java array that points to Symbol.
66 // As far as Java code is concerned, a Symbol array is either an array of
67 // int or long depending on pointer size. Only stack trace elements in Throwable use
68 // this. They cast Symbol* into this type.
69 typeArrayOop oopFactory::new_symbolArray(int length, TRAPS) {
70 BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT);
71 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
72 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
73 typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
74 return result;
75 }
76
77 typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) {
78 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
79 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
80 typeArrayOop result = type_asArrayKlass->allocate_common(length, false, THREAD);
81 return result;
82 }
83
84
85 objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) {
86 assert(klass->is_klass(), "must be instance class");
87 assert(!klass->is_value() || (!ValueKlass::cast(klass)->flatten_array()),
88 "Did not expect flatten array of value klass");
89 if (klass->is_array_klass()) {
90 return ArrayKlass::cast(klass)->allocate_arrayArray(1, length, THREAD);
91 } else {
92 return InstanceKlass::cast(klass)->allocate_objArray(1, length, THREAD);
93 }
94 }
95
96 arrayOop oopFactory::new_valueArray(Klass* klass, int length, TRAPS) {
97 assert(klass->is_value(), "Klass must be value type");
98 Klass* array_klass = klass->array_klass(CHECK_NULL); // Flat value array or object array ?
99 assert(array_klass->is_valueArray_klass() || array_klass->is_objArray_klass(),
100 "Expect an array class here");
101
102 if (array_klass->is_valueArray_klass()) {
103 return (arrayOop) ValueArrayKlass::cast(array_klass)->allocate(length, THREAD);
104 }
105
106 ValueKlass* vklass = ValueKlass::cast(klass);
107 objArrayOop array = oopFactory::new_objArray(klass, length, CHECK_NULL);
108 if (length == 0) {
109 return array;
110 }
111
112 // Populate default values...
113 objArrayHandle array_h(THREAD, array);
114 instanceOop value = (instanceOop)vklass->default_value();
115 for (int i = 0; i < length; i++) {
116 array_h->obj_at_put(i, value);
117 }
118 return array_h();
119 }
120
121 arrayOop oopFactory::new_array(Klass* klass, int length, TRAPS) {
122 return (klass->is_value()) ? new_valueArray(klass, length, THREAD) :
123 (arrayOop)new_objArray(klass, length, THREAD);
124 }
125
126 objArrayHandle oopFactory::new_objArray_handle(Klass* klass, int length, TRAPS) {
127 objArrayOop obj = new_objArray(klass, length, CHECK_(objArrayHandle()));
128 return objArrayHandle(THREAD, obj);
129 }
130
131 typeArrayHandle oopFactory::new_byteArray_handle(int length, TRAPS) {
132 typeArrayOop obj = new_byteArray(length, CHECK_(typeArrayHandle()));
133 return typeArrayHandle(THREAD, obj);
134 }