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annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotCompiledCode.java @ 22781:5d06abd6d35b

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Backport isImmutablePIC field from jvmci-9, and add documentation.
author Roland Schatz <roland.schatz@oracle.com>
date Wed, 20 Jan 2016 11:13:45 +0100
parents b4ff1a18d19c
children 805d58f2cd8c
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1 /*
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2 * Copyright (c) 2011, 2016, 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 package jdk.vm.ci.hotspot;
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24
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25 import jdk.vm.ci.code.BytecodeFrame;
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26 import jdk.vm.ci.code.CompiledCode;
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27 import jdk.vm.ci.code.site.DataPatch;
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28 import jdk.vm.ci.code.site.Infopoint;
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29 import jdk.vm.ci.code.site.Site;
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30 import jdk.vm.ci.meta.Assumptions.Assumption;
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31 import jdk.vm.ci.meta.ResolvedJavaMethod;
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32
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33 /**
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34 * A {@link CompiledCode} with additional HotSpot-specific information required for installing the
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35 * code in HotSpot's code cache.
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36 */
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37 public class HotSpotCompiledCode implements CompiledCode {
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38
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39 /**
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40 * The name of this compilation unit.
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41 */
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42 protected final String name;
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43
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44 /**
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45 * The buffer containing the emitted machine code.
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46 */
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47 protected final byte[] targetCode;
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48
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49 /**
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50 * The leading number of bytes in {@link #targetCode} containing the emitted machine code.
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51 */
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52 protected final int targetCodeSize;
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53
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54 /**
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55 * A list of code annotations describing special sites in {@link #targetCode}.
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56 */
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57 protected final Site[] sites;
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58
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59 /**
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60 * A list of {@link Assumption} this code relies on.
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61 */
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62 protected final Assumption[] assumptions;
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63
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64 /**
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65 * The list of the methods whose bytecodes were used as input to the compilation. If
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66 * {@code null}, then the compilation did not record method dependencies. Otherwise, the first
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67 * element of this array is the root method of the compilation.
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68 */
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69 protected final ResolvedJavaMethod[] methods;
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70
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71 /**
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72 * A list of comments that will be included in code dumps.
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73 */
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74 protected final Comment[] comments;
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75
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76 /**
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77 * The data section containing constants for the emitted machine code.
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78 */
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79 protected final byte[] dataSection;
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80
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81 /**
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82 * The minimum alignment of the data section.
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83 */
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84 protected final int dataSectionAlignment;
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85
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86 /**
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87 * A list of relocations in the {@link #dataSection}.
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88 */
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89 protected final DataPatch[] dataSectionPatches;
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90
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91 /**
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92 * A flag determining whether this code is immutable and position independent.
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93 */
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94 protected final boolean isImmutablePIC;
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95
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96 /**
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97 * The total size of the stack frame of this compiled method.
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98 */
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99 protected final int totalFrameSize;
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100
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101 /**
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102 * Offset in bytes for the custom stack area (relative to sp).
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103 */
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104 protected final int customStackAreaOffset;
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105
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106 public static class Comment {
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107
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108 public final String text;
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109 public final int pcOffset;
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110
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111 public Comment(int pcOffset, String text) {
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112 this.text = text;
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113 this.pcOffset = pcOffset;
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114 }
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115 }
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116
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117 public HotSpotCompiledCode(String name, byte[] targetCode, int targetCodeSize, Site[] sites, Assumption[] assumptions, ResolvedJavaMethod[] methods, Comment[] comments, byte[] dataSection,
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118 int dataSectionAlignment, DataPatch[] dataSectionPatches, boolean isImmutablePIC, int totalFrameSize, int customStackAreaOffset) {
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119 this.name = name;
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120 this.targetCode = targetCode;
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121 this.targetCodeSize = targetCodeSize;
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122 this.sites = sites;
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123 this.assumptions = assumptions;
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124 this.methods = methods;
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125
22773
9273bb6ba33e Simplify code installation interface: Use CompiledCode class instead of CompilationResult and DataSection.
Roland Schatz <roland.schatz@oracle.com>
parents: 22741
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126 this.comments = comments;
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127 this.dataSection = dataSection;
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128 this.dataSectionAlignment = dataSectionAlignment;
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129 this.dataSectionPatches = dataSectionPatches;
22781
5d06abd6d35b Backport isImmutablePIC field from jvmci-9, and add documentation.
Roland Schatz <roland.schatz@oracle.com>
parents: 22780
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130 this.isImmutablePIC = isImmutablePIC;
22773
9273bb6ba33e Simplify code installation interface: Use CompiledCode class instead of CompilationResult and DataSection.
Roland Schatz <roland.schatz@oracle.com>
parents: 22741
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131 this.totalFrameSize = totalFrameSize;
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Roland Schatz <roland.schatz@oracle.com>
parents: 22741
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132 this.customStackAreaOffset = customStackAreaOffset;
22780
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133
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134 assert validateFrames();
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135 }
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Christian Wimmer <christian.wimmer@oracle.com>
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136
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
Christian Wimmer <christian.wimmer@oracle.com>
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137 public String getName() {
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Christian Wimmer <christian.wimmer@oracle.com>
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138 return name;
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
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parents: 22773
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139 }
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140
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
141 @Override
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Christian Wimmer <christian.wimmer@oracle.com>
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142 public String toString() {
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Christian Wimmer <christian.wimmer@oracle.com>
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143 return name;
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144 }
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
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145
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
146 /**
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parents: 22773
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147 * Ensure that all the frames passed into the VM are properly formatted with an empty or illegal
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parents: 22773
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148 * slot following double word slots.
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149 */
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
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150 private boolean validateFrames() {
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
151 for (Site site : sites) {
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
152 if (site instanceof Infopoint) {
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
153 Infopoint info = (Infopoint) site;
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
154 if (info.debugInfo != null) {
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
155 BytecodeFrame frame = info.debugInfo.frame();
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Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
156 assert frame == null || frame.validateFormat();
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157 }
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158 }
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Christian Wimmer <christian.wimmer@oracle.com>
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159 }
b4ff1a18d19c Move data fields from CompiledCode to HotSpotCompiledCode
Christian Wimmer <christian.wimmer@oracle.com>
parents: 22773
diff changeset
160 return true;
22625
545590b1ab83 expanded CodeCacheProvider so that it supports all forms of code installation and made CompilerToVM.installCode package-private
Doug Simon <doug.simon@oracle.com>
parents: 22569
diff changeset
161 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
162 }