oopFactory.cpp revision 3602:da91efe96a93 
1/*
2 * Copyright (c) 1997, 2012, 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
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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_interface/collectedHeap.inline.hpp"
31#include "memory/oopFactory.hpp"
32#include "memory/resourceArea.hpp"
33#include "memory/universe.inline.hpp"
34#include "oops/instanceKlass.hpp"
35#include "oops/instanceOop.hpp"
36#include "oops/objArrayOop.hpp"
37#include "oops/oop.inline.hpp"
38
39
40typeArrayOop oopFactory::new_charArray(const char* utf8_str, TRAPS) {
41  int length = utf8_str == NULL ? 0 : UTF8::unicode_length(utf8_str);
42  typeArrayOop result = new_charArray(length, CHECK_NULL);
43  if (length > 0) {
44    UTF8::convert_to_unicode(utf8_str, result->char_at_addr(0), length);
45  }
46  return result;
47}
48
49typeArrayOop oopFactory::new_tenured_charArray(int length, TRAPS) {
50  return typeArrayKlass::cast(Universe::charArrayKlassObj())->allocate(length, THREAD);
51}
52
53typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
54  Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
55  typeArrayKlass* type_asArrayKlass = typeArrayKlass::cast(type_asKlassOop);
56  typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
57  return result;
58}
59
60// Create a Java array that points to metadata.
61// As far as Java code is concerned, a metaData array is either an array of
62// int or long depending on pointer size.  Only a few things use this, like
63// stack trace elements in Throwable.  They cast Method* into this type.
64// Note:can't point to symbols because there's no way to unreference count
65// them when this object goes away.
66typeArrayOop oopFactory::new_metaDataArray(int length, TRAPS) {
67  BasicType type = LP64_ONLY(T_LONG) NOT_LP64(T_INT);
68  Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
69  typeArrayKlass* type_asArrayKlass = typeArrayKlass::cast(type_asKlassOop);
70  typeArrayOop result = type_asArrayKlass->allocate_common(length, true, THREAD);
71  return result;
72}
73
74typeArrayOop oopFactory::new_typeArray_nozero(BasicType type, int length, TRAPS) {
75  Klass* type_asKlassOop = Universe::typeArrayKlassObj(type);
76  typeArrayKlass* type_asArrayKlass = typeArrayKlass::cast(type_asKlassOop);
77  typeArrayOop result = type_asArrayKlass->allocate_common(length, false, THREAD);
78  return result;
79}
80
81
82objArrayOop oopFactory::new_objArray(Klass* klass, int length, TRAPS) {
83  assert(klass->is_klass(), "must be instance class");
84  if (klass->oop_is_array()) {
85    return ((arrayKlass*)klass)->allocate_arrayArray(1, length, THREAD);
86  } else {
87    assert (klass->oop_is_instance(), "new object array with klass not an InstanceKlass");
88    return ((InstanceKlass*)klass)->allocate_objArray(1, length, THREAD);
89  }
90}
91