Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/runtime/reflectionUtils.cpp@da91efe96a93 (annotated)
src/share/vm/runtime/reflectionUtils.cpp
Sat, 01 Sep 2012 13:25:18 -0400
- author
- coleenp
- date
- Sat, 01 Sep 2012 13:25:18 -0400
- changeset 4037
- da91efe96a93
- parent 3900
- d2a62e0f25eb
- child 5848
- ac9cb1d5a202
- permissions
- -rw-r--r--
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| duke@435 | 1 | /* |
| coleenp@4037 | 2 | * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #include "precompiled.hpp" |
| stefank@2314 | 26 | #include "classfile/javaClasses.hpp" |
| stefank@2314 | 27 | #include "memory/universe.inline.hpp" |
| stefank@2314 | 28 | #include "runtime/reflectionUtils.hpp" |
| duke@435 | 29 | |
| duke@435 | 30 | KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) { |
| duke@435 | 31 | _klass = klass; |
| duke@435 | 32 | if (classes_only) { |
| coleenp@4037 | 33 | _interfaces = Universe::the_empty_klass_array(); |
| duke@435 | 34 | } else { |
| duke@435 | 35 | _interfaces = klass->transitive_interfaces(); |
| duke@435 | 36 | } |
| duke@435 | 37 | _interface_index = _interfaces->length(); |
| duke@435 | 38 | _local_only = local_only; |
| duke@435 | 39 | _classes_only = classes_only; |
| duke@435 | 40 | } |
| duke@435 | 41 | |
| duke@435 | 42 | bool KlassStream::eos() { |
| duke@435 | 43 | if (index() >= 0) return false; |
| duke@435 | 44 | if (_local_only) return true; |
| duke@435 | 45 | if (!_klass->is_interface() && _klass->super() != NULL) { |
| duke@435 | 46 | // go up superclass chain (not for interfaces) |
| duke@435 | 47 | _klass = _klass->super(); |
| duke@435 | 48 | } else { |
| duke@435 | 49 | if (_interface_index > 0) { |
| coleenp@4037 | 50 | _klass = _interfaces->at(--_interface_index); |
| duke@435 | 51 | } else { |
| duke@435 | 52 | return true; |
| duke@435 | 53 | } |
| duke@435 | 54 | } |
| duke@435 | 55 | _index = length(); |
| duke@435 | 56 | next(); |
| duke@435 | 57 | return eos(); |
| duke@435 | 58 | } |
| duke@435 | 59 | |
| duke@435 | 60 | |
| duke@435 | 61 | GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields = |
| zgu@3900 | 62 | new (ResourceObj::C_HEAP, mtInternal) GrowableArray<FilteredField*>(3,true); |
| duke@435 | 63 | |
| duke@435 | 64 | |
| duke@435 | 65 | void FilteredFieldsMap::initialize() { |
| duke@435 | 66 | int offset; |
| duke@435 | 67 | offset = java_lang_Throwable::get_backtrace_offset(); |
| never@1577 | 68 | _filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset)); |
| duke@435 | 69 | // The latest version of vm may be used with old jdk. |
| duke@435 | 70 | if (JDK_Version::is_gte_jdk16x_version()) { |
| duke@435 | 71 | // The following class fields do not exist in |
| duke@435 | 72 | // previous version of jdk. |
| coleenp@4037 | 73 | offset = sun_reflect_ConstantPool::oop_offset(); |
| never@1577 | 74 | _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset)); |
| duke@435 | 75 | offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset(); |
| never@1577 | 76 | _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset)); |
| duke@435 | 77 | } |
| duke@435 | 78 | } |
| duke@435 | 79 | |
| duke@435 | 80 | int FilteredFieldStream::field_count() { |
| duke@435 | 81 | int numflds = 0; |
| duke@435 | 82 | for (;!eos(); next()) { |
| duke@435 | 83 | numflds++; |
| duke@435 | 84 | } |
| duke@435 | 85 | return numflds; |
| duke@435 | 86 | } |
