Mercurial > hg > truffle
comparison src/share/vm/runtime/reflectionUtils.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 4ce7240d622c |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 1999-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_reflectionUtils.cpp.incl" | |
27 | |
28 KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) { | |
29 _klass = klass; | |
30 if (classes_only) { | |
31 _interfaces = Universe::the_empty_system_obj_array(); | |
32 } else { | |
33 _interfaces = klass->transitive_interfaces(); | |
34 } | |
35 _interface_index = _interfaces->length(); | |
36 _local_only = local_only; | |
37 _classes_only = classes_only; | |
38 } | |
39 | |
40 bool KlassStream::eos() { | |
41 if (index() >= 0) return false; | |
42 if (_local_only) return true; | |
43 if (!_klass->is_interface() && _klass->super() != NULL) { | |
44 // go up superclass chain (not for interfaces) | |
45 _klass = _klass->super(); | |
46 } else { | |
47 if (_interface_index > 0) { | |
48 _klass = klassOop(_interfaces->obj_at(--_interface_index)); | |
49 } else { | |
50 return true; | |
51 } | |
52 } | |
53 _index = length(); | |
54 next(); | |
55 return eos(); | |
56 } | |
57 | |
58 | |
59 GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields = | |
60 new (ResourceObj::C_HEAP) GrowableArray<FilteredField*>(3,true); | |
61 | |
62 | |
63 void FilteredFieldsMap::initialize() { | |
64 int offset; | |
65 offset = java_lang_Throwable::get_backtrace_offset(); | |
66 _filtered_fields->append(new FilteredField(SystemDictionary::throwable_klass(), offset)); | |
67 // The latest version of vm may be used with old jdk. | |
68 if (JDK_Version::is_gte_jdk16x_version()) { | |
69 // The following class fields do not exist in | |
70 // previous version of jdk. | |
71 offset = sun_reflect_ConstantPool::cp_oop_offset(); | |
72 _filtered_fields->append(new FilteredField(SystemDictionary::reflect_constant_pool_klass(), offset)); | |
73 offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset(); | |
74 _filtered_fields->append(new FilteredField(SystemDictionary::reflect_unsafe_static_field_accessor_impl_klass(), offset)); | |
75 } | |
76 } | |
77 | |
78 int FilteredFieldStream::field_count() { | |
79 int numflds = 0; | |
80 for (;!eos(); next()) { | |
81 numflds++; | |
82 } | |
83 return numflds; | |
84 } |