Mercurial > hg > graal-jvmci-8
comparison src/share/vm/oops/annotations.cpp @ 6725:da91efe96a93
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 |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | |
children | 35431a769282 |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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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 |