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comparison src/share/vm/oops/annotations.cpp @ 6725:da91efe96a93

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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>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
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children 35431a769282
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6724:36d1d483d5d6 6725:da91efe96a93
1 /*
2 * Copyright (c) 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
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/classLoaderData.hpp"
27 #include "memory/metadataFactory.hpp"
28 #include "memory/oopFactory.hpp"
29 #include "oops/annotations.hpp"
30 #include "oops/instanceKlass.hpp"
31 #include "utilities/ostream.hpp"
32
33 // Allocate annotations in metadata area
34 Annotations* Annotations::allocate(ClassLoaderData* loader_data, TRAPS) {
35 return new (loader_data, size(), true, THREAD) Annotations();
36 }
37
38 Annotations* Annotations::allocate(ClassLoaderData* loader_data,
39 Array<AnnotationArray*>* fa,
40 Array<AnnotationArray*>* ma,
41 Array<AnnotationArray*>* mpa,
42 Array<AnnotationArray*>* mda, TRAPS) {
43 return new (loader_data, size(), true, THREAD) Annotations(fa, ma, mpa, mda);
44 }
45
46 // helper
47 static void free_contents(ClassLoaderData* loader_data, Array<AnnotationArray*>* p) {
48 if (p != NULL) {
49 for (int i = 0; i < p->length(); i++) {
50 MetadataFactory::free_array<u1>(loader_data, p->at(i));
51 }
52 MetadataFactory::free_array<AnnotationArray*>(loader_data, p);
53 }
54 }
55
56 void Annotations::deallocate_contents(ClassLoaderData* loader_data) {
57 if (class_annotations() != NULL) {
58 MetadataFactory::free_array<u1>(loader_data, class_annotations());
59 }
60 free_contents(loader_data, fields_annotations());
61 free_contents(loader_data, methods_annotations());
62 free_contents(loader_data, methods_parameter_annotations());
63 free_contents(loader_data, methods_default_annotations());
64 }
65
66 // Set the annotation at 'idnum' to 'anno'.
67 // We don't want to create or extend the array if 'anno' is NULL, since that is the
68 // default value. However, if the array exists and is long enough, we must set NULL values.
69 void Annotations::set_methods_annotations_of(instanceKlassHandle ik,
70 int idnum, AnnotationArray* anno,
71 Array<AnnotationArray*>** md_p,
72 TRAPS) {
73 Array<AnnotationArray*>* md = *md_p;
74 if (md != NULL && md->length() > idnum) {
75 md->at_put(idnum, anno);
76 } else if (anno != NULL) {
77 // create the array
78 int length = MAX2(idnum+1, (int)ik->idnum_allocated_count());
79 md = MetadataFactory::new_array<AnnotationArray*>(ik->class_loader_data(), length, CHECK);
80 if (*md_p != NULL) {
81 // copy the existing entries
82 for (int index = 0; index < (*md_p)->length(); index++) {
83 md->at_put(index, (*md_p)->at(index));
84 }
85 }
86 set_annotations(md, md_p);
87 md->at_put(idnum, anno);
88 } // if no array and idnum isn't included there is nothing to do
89 }
90
91 // Keep created annotations in a global growable array (should be hashtable)
92 // need to add, search, delete when class is unloaded.
93 // Does it need a lock? yes. This sucks.
94
95 // Copy annotations to JVM call or reflection to the java heap.
96 typeArrayOop Annotations::make_java_array(AnnotationArray* annotations, TRAPS) {
97 if (annotations != NULL) {
98 int length = annotations->length();
99 typeArrayOop copy = oopFactory::new_byteArray(length, CHECK_NULL);
100 for (int i = 0; i< length; i++) {
101 copy->byte_at_put(i, annotations->at(i));
102 }
103 return copy;
104 } else {
105 return NULL;
106 }
107 }
108
109
110 void Annotations::print_value_on(outputStream* st) const {
111 st->print("Anotations(" INTPTR_FORMAT ")", this);
112 }
113
114 #define BULLET " - "
115
116 #ifndef PRODUCT
117 void Annotations::print_on(outputStream* st) const {
118 st->print(BULLET"class_annotations "); class_annotations()->print_value_on(st);
119 st->print(BULLET"fields_annotations "); fields_annotations()->print_value_on(st);
120 st->print(BULLET"methods_annotations "); methods_annotations()->print_value_on(st);
121 st->print(BULLET"methods_parameter_annotations"); methods_parameter_annotations()->print_value_on(st);
122 st->print(BULLET"methods_default_annotations "); methods_default_annotations()->print_value_on(st);
123 }
124 #endif // PRODUCT