1 /*
   2  * Copyright (c) 1997, 2019, 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/objArrayKlass.hpp"
  37 #include "oops/objArrayOop.inline.hpp"
  38 #include "oops/objArrayOop.hpp"
  39 #include "oops/oop.inline.hpp"
  40 #include "oops/typeArrayKlass.hpp"
  41 #include "oops/typeArrayOop.inline.hpp"
  42 #include "oops/valueKlass.hpp"
  43 #include "oops/valueArrayKlass.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() != NULL, "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 == NULL ? 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_tenured_charArray(int length, TRAPS) {
  95   return TypeArrayKlass::cast(Universe::charArrayKlassObj())->allocate(length, THREAD);
  96 }
  97 
  98 typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
  99   Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
 100   TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
 101   typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
 102   return result;
 103 }
 104 
 105 // Create a Java array that points to Symbol.
 106 // As far as Java code is concerned, a Symbol array is either an array of
 107 // int or long depending on pointer size.  Only stack trace elements in Throwable use
 108 // this.  They cast Symbol* into this type.
 109 typeArrayOop oopFactory::new_symbolArray(int length, TRAPS) {
 110   BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT);
 111   Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
 112   TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
 113   typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
 114   return result;
 115 }
 116 
 117 typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) {
 118   Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
 119   TypeArrayKlass* type_asArrayKlass = TypeArrayKlass::cast(type_asKlassOop);
 120   typeArrayOop result = type_asArrayKlass->allocate_common(length, false, THREAD);
 121   return result;
 122 }
 123 
 124 
 125 objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) {
 126   assert(klass->is_klass(), "must be instance class");
 127   if (klass->is_array_klass()) {
 128     return ArrayKlass::cast(klass)->allocate_arrayArray(1, length, THREAD);
 129   } else {
 130     return InstanceKlass::cast(klass)->allocate_objArray(1, length, THREAD);
 131   }
 132 }
 133 
 134 arrayOop oopFactory::new_valueArray(Klass* klass, int length, TRAPS) {
 135   assert(klass->is_value(), "Klass must be value type");
 136   // Request flattened, but we might not actually get it...either way "null-free" are the aaload/aastore semantics
 137   Klass* array_klass = klass->array_klass(ArrayStorageProperties::flattened_and_null_free, 1, CHECK_NULL);
 138   assert(ArrayKlass::cast(array_klass)->storage_properties().is_null_free(), "Expect a null-free array class here");
 139 
 140   arrayOop oop;
 141   if (array_klass->is_valueArray_klass()) {
 142     oop = (arrayOop) ValueArrayKlass::cast(array_klass)->allocate(length, THREAD);
 143   } else {
 144     oop = (arrayOop) ObjArrayKlass::cast(array_klass)->allocate(length, THREAD);
 145   }
 146   assert(oop->array_storage_properties().is_null_free(), "Bad array storage encoding");
 147   return oop;
 148 }
 149 
 150 objArrayHandle oopFactory::new_objArray_handle(Klass* klass, int length, TRAPS) {
 151   objArrayOop obj = new_objArray(klass, length, CHECK_(objArrayHandle()));
 152   return objArrayHandle(THREAD, obj);
 153 }
 154 
 155 typeArrayHandle oopFactory::new_byteArray_handle(int length, TRAPS) {
 156   typeArrayOop obj = new_byteArray(length, CHECK_(typeArrayHandle()));
 157   return typeArrayHandle(THREAD, obj);
 158 }