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.inline.hpp"
 35 #include "oops/flatArrayOop.hpp"
 36 #include "oops/instanceKlass.hpp"
 37 #include "oops/instanceOop.hpp"
 38 #include "oops/objArrayKlass.hpp"
 39 #include "oops/objArrayOop.inline.hpp"
 40 #include "oops/objArrayOop.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 }