1 /* 2 * Copyright (c) 1997, 2023, 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/vmSymbols.hpp" 29 #include "gc/shared/collectedHeap.inline.hpp" 30 #include "memory/oopFactory.hpp" 31 #include "memory/resourceArea.hpp" 32 #include "memory/universe.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/typeArrayKlass.hpp" 43 #include "oops/typeArrayOop.inline.hpp" 44 #include "runtime/handles.inline.hpp" 45 #include "utilities/utf8.hpp" 46 47 typeArrayOop oopFactory::new_boolArray(int length, TRAPS) { 48 return TypeArrayKlass::cast(Universe::boolArrayKlassObj())->allocate(length, THREAD); 49 } 50 51 typeArrayOop oopFactory::new_charArray(int length, TRAPS) { 52 return TypeArrayKlass::cast(Universe::charArrayKlassObj())->allocate(length, THREAD); 53 } 54 55 typeArrayOop oopFactory::new_floatArray(int length, TRAPS) { 56 return TypeArrayKlass::cast(Universe::floatArrayKlassObj())->allocate(length, THREAD); 57 } 58 59 typeArrayOop oopFactory::new_doubleArray(int length, TRAPS) { 60 return TypeArrayKlass::cast(Universe::doubleArrayKlassObj())->allocate(length, THREAD); 61 } 62 63 typeArrayOop oopFactory::new_byteArray(int length, TRAPS) { 64 return TypeArrayKlass::cast(Universe::byteArrayKlassObj())->allocate(length, THREAD); 65 } 66 67 typeArrayOop oopFactory::new_shortArray(int length, TRAPS) { 68 return TypeArrayKlass::cast(Universe::shortArrayKlassObj())->allocate(length, THREAD); 69 } 70 71 typeArrayOop oopFactory::new_intArray(int length, TRAPS) { 72 return TypeArrayKlass::cast(Universe::intArrayKlassObj())->allocate(length, THREAD); 73 } 74 75 typeArrayOop oopFactory::new_longArray(int length, TRAPS) { 76 return TypeArrayKlass::cast(Universe::longArrayKlassObj())->allocate(length, THREAD); 77 } 78 79 // create java.lang.Object[] 80 objArrayOop oopFactory::new_objectArray(int length, TRAPS) { 81 assert(Universe::objectArrayKlassObj() != nullptr, "Too early?"); 82 return ObjArrayKlass::cast(Universe::objectArrayKlassObj())->allocate(length, 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 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type); 96 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop); 97 typeArrayOop result = type_asArrayKlass->allocate(length, THREAD); 98 return result; 99 } 100 101 // Create a Java array that points to Symbol. 102 // As far as Java code is concerned, a Symbol array is either an array of 103 // int or long depending on pointer size. Only stack trace elements in Throwable use 104 // this. They cast Symbol* into this type. 105 typeArrayOop oopFactory::new_symbolArray(int length, TRAPS) { 106 BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT); 107 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type); 108 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop); 109 typeArrayOop result = type_asArrayKlass->allocate(length, THREAD); 110 return result; 111 } 112 113 typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) { 114 Klass* type_asKlassOop = Universe::typeArrayKlassObj(type); 115 TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop); 116 typeArrayOop result = type_asArrayKlass->allocate_common(length, false, THREAD); 117 return result; 118 } 119 120 121 objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) { 122 assert(klass->is_klass(), "must be instance class"); 123 if (klass->is_array_klass()) { 124 return ArrayKlass::cast(klass)->allocate_arrayArray(1, length, THREAD); 125 } else { 126 return InstanceKlass::cast(klass)->allocate_objArray(1, length, THREAD); 127 } 128 } 129 130 arrayOop oopFactory::new_valueArray(Klass* k, int length, TRAPS) { 131 InlineKlass* klass = InlineKlass::cast(k); 132 // Request a flat array, but we might not actually get it...either way "null-free" are the aaload/aastore semantics 133 Klass* array_klass = klass->value_array_klass(CHECK_NULL); 134 assert(array_klass->is_null_free_array_klass(), "Expect a null-free array class here"); 135 136 arrayOop oop; 137 if (array_klass->is_flatArray_klass()) { 138 oop = (arrayOop) FlatArrayKlass::cast(array_klass)->allocate(length, CHECK_NULL); 139 assert(oop == nullptr || oop->is_flatArray(), "sanity"); 140 assert(oop == nullptr || oop->klass()->is_flatArray_klass(), "sanity"); 141 } else { 142 oop = (arrayOop) ObjArrayKlass::cast(array_klass)->allocate(length, CHECK_NULL); 143 } 144 assert(oop == nullptr || oop->klass()->is_null_free_array_klass(), "sanity"); 145 assert(oop == nullptr || oop->is_null_free_array(), "sanity"); 146 return oop; 147 } 148 149 objArrayHandle oopFactory::copy_flatArray_to_objArray(flatArrayHandle array, TRAPS) { 150 int len = array->length(); 151 FlatArrayKlass* vak = FlatArrayKlass::cast(array->klass()); 152 objArrayOop oarray = new_objectArray(array->length(), CHECK_(objArrayHandle())); 153 objArrayHandle oarrayh(THREAD, oarray); 154 vak->copy_array(array(), 0, oarrayh(), 0, len, CHECK_(objArrayHandle())); 155 return oarrayh; 156 } 157 158 objArrayHandle oopFactory::ensure_objArray(oop array, TRAPS) { 159 if (array != nullptr && array->is_flatArray()) { 160 return copy_flatArray_to_objArray(flatArrayHandle(THREAD, flatArrayOop(array)), THREAD); 161 } else { 162 return objArrayHandle(THREAD, objArrayOop(array)); 163 } 164 } 165 166 objArrayHandle oopFactory::new_objArray_handle(Klass* klass, int length, TRAPS) { 167 objArrayOop obj = new_objArray(klass, length, CHECK_(objArrayHandle())); 168 return objArrayHandle(THREAD, obj); 169 }