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annotate src/share/vm/oops/annotations.hpp @ 10107:8df6ddda8090

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Merge
author jiangli
date Mon, 15 Apr 2013 21:25:23 -0400
parents 927a311d00f9
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_OOPS_ANNOTATIONS_HPP
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26 #define SHARE_VM_OOPS_ANNOTATIONS_HPP
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27
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28 #include "oops/metadata.hpp"
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29 #include "runtime/handles.hpp"
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30 #include "utilities/array.hpp"
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31 #include "utilities/exceptions.hpp"
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32 #include "utilities/globalDefinitions.hpp"
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33
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34
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35 class ClassLoaderData;
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36 class outputStream;
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37 class KlassSizeStats;
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38
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39 typedef Array<u1> AnnotationArray;
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40
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41 // Class to hold the various types of annotations. The only metadata that points
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42 // to this is InstanceKlass, or another Annotations instance if this is a
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43 // a type_annotation instance.
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44
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45 class Annotations: public MetaspaceObj {
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46
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47 // Annotations for this class, or null if none.
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48 AnnotationArray* _class_annotations;
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49 // Annotation objects (byte arrays) for fields, or null if no annotations.
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50 // Indices correspond to entries (not indices) in fields array.
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51 Array<AnnotationArray*>* _fields_annotations;
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52 // Type annotations for this class, or null if none.
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53 AnnotationArray* _class_type_annotations;
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54 Array<AnnotationArray*>* _fields_type_annotations;
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55
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56 public:
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57 // Allocate instance of this class
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58 static Annotations* allocate(ClassLoaderData* loader_data, TRAPS);
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59
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60 static void free_contents(ClassLoaderData* loader_data, Array<AnnotationArray*>* p);
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61 void deallocate_contents(ClassLoaderData* loader_data);
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62 DEBUG_ONLY(bool on_stack() { return false; }) // for template
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63
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64 // Sizing (in words)
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65 static int size() { return sizeof(Annotations) / wordSize; }
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66 #if INCLUDE_SERVICES
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67 void collect_statistics(KlassSizeStats *sz) const;
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68 #endif
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69
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70 // Constructor to initialize to null
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71 Annotations() : _class_annotations(NULL),
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72 _fields_annotations(NULL),
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73 _class_type_annotations(NULL),
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74 _fields_type_annotations(NULL) {}
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75
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76 AnnotationArray* class_annotations() const { return _class_annotations; }
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77 Array<AnnotationArray*>* fields_annotations() const { return _fields_annotations; }
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78 AnnotationArray* class_type_annotations() const { return _class_type_annotations; }
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79 Array<AnnotationArray*>* fields_type_annotations() const { return _fields_type_annotations; }
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80
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81 void set_class_annotations(AnnotationArray* md) { _class_annotations = md; }
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82 void set_fields_annotations(Array<AnnotationArray*>* md) { _fields_annotations = md; }
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83 void set_class_type_annotations(AnnotationArray* cta) { _class_type_annotations = cta; }
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84 void set_fields_type_annotations(Array<AnnotationArray*>* fta) { _fields_type_annotations = fta; }
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85
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86 // Turn metadata annotations into a Java heap object (oop)
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87 static typeArrayOop make_java_array(AnnotationArray* annotations, TRAPS);
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88
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89 bool is_klass() const { return false; }
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90 private:
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91 static julong count_bytes(Array<AnnotationArray*>* p);
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92 public:
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93 const char* internal_name() const { return "{constant pool}"; }
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94 #ifndef PRODUCT
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95 void print_on(outputStream* st) const;
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96 #endif
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97 void print_value_on(outputStream* st) const;
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98 };
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99 #endif // SHARE_VM_OOPS_ANNOTATIONS_HPP