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annotate src/share/vm/oops/annotations.cpp @ 7949:5daaddd917a1

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8006040: NPG: on_stack processing wastes space in ConstantPool Summary: Added on_stack bit to flags. Also MetadataMarkOnStack is used for more than JVMTI so had to be moved. Reviewed-by: dholmes, stefank
author coleenp
date Wed, 23 Jan 2013 10:34:29 -0500
parents 35431a769282
children 16fb9f942703
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1 /*
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2 * Copyright (c) 2012, 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 #include "precompiled.hpp"
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26 #include "classfile/classLoaderData.hpp"
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27 #include "memory/metadataFactory.hpp"
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28 #include "memory/oopFactory.hpp"
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29 #include "oops/annotations.hpp"
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30 #include "oops/instanceKlass.hpp"
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31 #include "utilities/ostream.hpp"
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32
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33 // Allocate annotations in metadata area
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34 Annotations* Annotations::allocate(ClassLoaderData* loader_data, TRAPS) {
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35 return new (loader_data, size(), true, THREAD) Annotations();
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36 }
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37
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38 Annotations* Annotations::allocate(ClassLoaderData* loader_data,
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39 Array<AnnotationArray*>* fa,
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40 Array<AnnotationArray*>* ma,
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41 Array<AnnotationArray*>* mpa,
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42 Array<AnnotationArray*>* mda, TRAPS) {
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43 return new (loader_data, size(), true, THREAD) Annotations(fa, ma, mpa, mda);
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44 }
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45
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46 // helper
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47 static void free_contents(ClassLoaderData* loader_data, Array<AnnotationArray*>* p) {
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48 if (p != NULL) {
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49 for (int i = 0; i < p->length(); i++) {
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50 MetadataFactory::free_array<u1>(loader_data, p->at(i));
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51 }
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52 MetadataFactory::free_array<AnnotationArray*>(loader_data, p);
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53 }
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54 }
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55
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56 void Annotations::deallocate_contents(ClassLoaderData* loader_data) {
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57 if (class_annotations() != NULL) {
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58 MetadataFactory::free_array<u1>(loader_data, class_annotations());
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59 }
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60 free_contents(loader_data, fields_annotations());
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61 free_contents(loader_data, methods_annotations());
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62 free_contents(loader_data, methods_parameter_annotations());
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63 free_contents(loader_data, methods_default_annotations());
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64
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65 // Recursively deallocate optional Annotations linked through this one
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66 MetadataFactory::free_metadata(loader_data, type_annotations());
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67 }
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68
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69 // Set the annotation at 'idnum' to 'anno'.
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70 // We don't want to create or extend the array if 'anno' is NULL, since that is the
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71 // default value. However, if the array exists and is long enough, we must set NULL values.
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72 void Annotations::set_methods_annotations_of(instanceKlassHandle ik,
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73 int idnum, AnnotationArray* anno,
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74 Array<AnnotationArray*>** md_p,
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75 TRAPS) {
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76 Array<AnnotationArray*>* md = *md_p;
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77 if (md != NULL && md->length() > idnum) {
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78 md->at_put(idnum, anno);
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79 } else if (anno != NULL) {
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80 // create the array
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81 int length = MAX2(idnum+1, (int)ik->idnum_allocated_count());
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82 md = MetadataFactory::new_array<AnnotationArray*>(ik->class_loader_data(), length, CHECK);
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83 if (*md_p != NULL) {
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84 // copy the existing entries
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85 for (int index = 0; index < (*md_p)->length(); index++) {
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86 md->at_put(index, (*md_p)->at(index));
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87 }
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88 }
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89 set_annotations(md, md_p);
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90 md->at_put(idnum, anno);
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91 } // if no array and idnum isn't included there is nothing to do
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92 }
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93
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94 // Keep created annotations in a global growable array (should be hashtable)
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95 // need to add, search, delete when class is unloaded.
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96 // Does it need a lock? yes. This sucks.
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97
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98 // Copy annotations to JVM call or reflection to the java heap.
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99 typeArrayOop Annotations::make_java_array(AnnotationArray* annotations, TRAPS) {
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100 if (annotations != NULL) {
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101 int length = annotations->length();
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102 typeArrayOop copy = oopFactory::new_byteArray(length, CHECK_NULL);
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103 for (int i = 0; i< length; i++) {
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104 copy->byte_at_put(i, annotations->at(i));
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105 }
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106 return copy;
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107 } else {
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108 return NULL;
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109 }
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110 }
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111
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112
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113 void Annotations::print_value_on(outputStream* st) const {
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114 st->print("Anotations(" INTPTR_FORMAT ")", this);
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115 }
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116
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117 #define BULLET " - "
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118
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119 #ifndef PRODUCT
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120 void Annotations::print_on(outputStream* st) const {
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121 st->print(BULLET"class_annotations "); class_annotations()->print_value_on(st);
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122 st->print(BULLET"fields_annotations "); fields_annotations()->print_value_on(st);
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123 st->print(BULLET"methods_annotations "); methods_annotations()->print_value_on(st);
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124 st->print(BULLET"methods_parameter_annotations"); methods_parameter_annotations()->print_value_on(st);
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125 st->print(BULLET"methods_default_annotations "); methods_default_annotations()->print_value_on(st);
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126 }
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127 #endif // PRODUCT