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 #ifndef SHARE_MEMORY_OOPFACTORY_HPP
  26 #define SHARE_MEMORY_OOPFACTORY_HPP
  27 
  28 #include "memory/referenceType.hpp"
  29 #include "oops/oopsHierarchy.hpp"
  30 #include "runtime/handles.hpp"
  31 #include "utilities/exceptions.hpp"
  32 
  33 // oopFactory is a class used for creating new objects.
  34 
  35 class oopFactory: AllStatic {
  36  public:
  37   // Basic type leaf array allocation
  38   static typeArrayOop    new_boolArray  (int length, TRAPS);
  39   static typeArrayOop    new_charArray  (int length, TRAPS);
  40   static typeArrayOop    new_floatArray (int length, TRAPS);
  41   static typeArrayOop    new_doubleArray(int length, TRAPS);
  42   static typeArrayOop    new_byteArray  (int length, TRAPS);
  43   static typeArrayOop    new_shortArray (int length, TRAPS);
  44   static typeArrayOop    new_intArray   (int length, TRAPS);
  45   static typeArrayOop    new_longArray  (int length, TRAPS);
  46 
  47   // create java.lang.Object[]
  48   static objArrayOop     new_objectArray(int length, TRAPS);
  49 
  50   static typeArrayOop    new_charArray(const char* utf8_str,  TRAPS);
  51   static typeArrayOop    new_tenured_charArray(int length, TRAPS);
  52 
  53   static typeArrayOop    new_typeArray(BasicType type, int length, TRAPS);
  54   static typeArrayOop    new_typeArray_nozero(BasicType type, int length, TRAPS);
  55   static typeArrayOop    new_symbolArray(int length, TRAPS);
  56 
  57   // Regular object arrays
  58   static objArrayOop     new_objArray(Klass* klass, int length, TRAPS);
  59 
  60   // Value arrays...
  61   // LWorld:
  62   //    - Q-type signature allocation should use this path.
  63   //    - L-type signature allocation should use new_objArray (even with value type elements)
  64   //
  65   // Method specifically creates ArrayStorageProperties::null_free and possibly flattened if possible
  66   // i.e. valueArrayOop if flattening can be done, else objArrayOop with "null free" storage properties
  67   static arrayOop        new_valueArray(Klass* klass, int length, TRAPS);
  68 
  69   // Helpers that return handles
  70   static objArrayHandle  new_objArray_handle(Klass* klass, int length, TRAPS);
  71   static typeArrayHandle new_byteArray_handle(int length, TRAPS);
  72 };
  73 
  74 #endif // SHARE_MEMORY_OOPFACTORY_HPP