Wed, 16 Oct 2013 16:33:04 -0400
8026286: Improper locking of annotation queues causes assertion failures.
8026063: Calls to annotate.flush() cause incorrect type annotations to be generated.
Summary: Fix locking in ClassReader.java
Reviewed-by: jfranck
1 /*
2 * Copyright (c) 2005, 2011, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
26 package com.sun.tools.javac.util;
28 import com.sun.tools.javac.api.Messages;
29 import java.lang.ref.SoftReference;
30 import java.util.ResourceBundle;
31 import java.util.MissingResourceException;
32 import java.text.MessageFormat;
33 import java.util.HashMap;
34 import java.util.Locale;
35 import java.util.Map;
37 /**
38 * Support for formatted localized messages.
39 *
40 * <p><b>This is NOT part of any supported API.
41 * If you write code that depends on this, you do so at your own risk.
42 * This code and its internal interfaces are subject to change or
43 * deletion without notice.</b>
44 */
45 public class JavacMessages implements Messages {
46 /** The context key for the JavacMessages object. */
47 public static final Context.Key<JavacMessages> messagesKey =
48 new Context.Key<JavacMessages>();
50 /** Get the JavacMessages instance for this context. */
51 public static JavacMessages instance(Context context) {
52 JavacMessages instance = context.get(messagesKey);
53 if (instance == null)
54 instance = new JavacMessages(context);
55 return instance;
56 }
58 private Map<Locale, SoftReference<List<ResourceBundle>>> bundleCache;
60 private List<String> bundleNames;
62 private Locale currentLocale;
63 private List<ResourceBundle> currentBundles;
65 public Locale getCurrentLocale() {
66 return currentLocale;
67 }
69 public void setCurrentLocale(Locale locale) {
70 if (locale == null) {
71 locale = Locale.getDefault();
72 }
73 this.currentBundles = getBundles(locale);
74 this.currentLocale = locale;
75 }
77 /** Creates a JavacMessages object.
78 */
79 public JavacMessages(Context context) {
80 this(defaultBundleName, context.get(Locale.class));
81 context.put(messagesKey, this);
82 }
84 /** Creates a JavacMessages object.
85 * @param bundleName the name to identify the resource bundle of localized messages.
86 */
87 public JavacMessages(String bundleName) throws MissingResourceException {
88 this(bundleName, null);
89 }
91 /** Creates a JavacMessages object.
92 * @param bundleName the name to identify the resource bundle of localized messages.
93 */
94 public JavacMessages(String bundleName, Locale locale) throws MissingResourceException {
95 bundleNames = List.nil();
96 bundleCache = new HashMap<Locale, SoftReference<List<ResourceBundle>>>();
97 add(bundleName);
98 setCurrentLocale(locale);
99 }
101 public JavacMessages() throws MissingResourceException {
102 this(defaultBundleName);
103 }
105 public void add(String bundleName) throws MissingResourceException {
106 bundleNames = bundleNames.prepend(bundleName);
107 if (!bundleCache.isEmpty())
108 bundleCache.clear();
109 currentBundles = null;
110 }
112 public List<ResourceBundle> getBundles(Locale locale) {
113 if (locale == currentLocale && currentBundles != null)
114 return currentBundles;
115 SoftReference<List<ResourceBundle>> bundles = bundleCache.get(locale);
116 List<ResourceBundle> bundleList = bundles == null ? null : bundles.get();
117 if (bundleList == null) {
118 bundleList = List.nil();
119 for (String bundleName : bundleNames) {
120 try {
121 ResourceBundle rb = ResourceBundle.getBundle(bundleName, locale);
122 bundleList = bundleList.prepend(rb);
123 } catch (MissingResourceException e) {
124 throw new InternalError("Cannot find javac resource bundle for locale " + locale);
125 }
126 }
127 bundleCache.put(locale, new SoftReference<List<ResourceBundle>>(bundleList));
128 }
129 return bundleList;
130 }
132 /** Gets the localized string corresponding to a key, formatted with a set of args.
133 */
134 public String getLocalizedString(String key, Object... args) {
135 return getLocalizedString(currentLocale, key, args);
136 }
138 public String getLocalizedString(Locale l, String key, Object... args) {
139 if (l == null)
140 l = getCurrentLocale();
141 return getLocalizedString(getBundles(l), key, args);
142 }
144 /* Static access:
145 * javac has a firmly entrenched notion of a default message bundle
146 * which it can access from any static context. This is used to get
147 * easy access to simple localized strings.
148 */
150 private static final String defaultBundleName =
151 "com.sun.tools.javac.resources.compiler";
152 private static ResourceBundle defaultBundle;
153 private static JavacMessages defaultMessages;
156 /**
157 * Gets a localized string from the compiler's default bundle.
158 */
159 // used to support legacy Log.getLocalizedString
160 static String getDefaultLocalizedString(String key, Object... args) {
161 return getLocalizedString(List.of(getDefaultBundle()), key, args);
162 }
164 // used to support legacy static Diagnostic.fragment
165 @Deprecated
166 static JavacMessages getDefaultMessages() {
167 if (defaultMessages == null)
168 defaultMessages = new JavacMessages(defaultBundleName);
169 return defaultMessages;
170 }
172 public static ResourceBundle getDefaultBundle() {
173 try {
174 if (defaultBundle == null)
175 defaultBundle = ResourceBundle.getBundle(defaultBundleName);
176 return defaultBundle;
177 }
178 catch (MissingResourceException e) {
179 throw new Error("Fatal: Resource for compiler is missing", e);
180 }
181 }
183 private static String getLocalizedString(List<ResourceBundle> bundles,
184 String key,
185 Object... args) {
186 String msg = null;
187 for (List<ResourceBundle> l = bundles; l.nonEmpty() && msg == null; l = l.tail) {
188 ResourceBundle rb = l.head;
189 try {
190 msg = rb.getString(key);
191 }
192 catch (MissingResourceException e) {
193 // ignore, try other bundles in list
194 }
195 }
196 if (msg == null) {
197 msg = "compiler message file broken: key=" + key +
198 " arguments={0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}";
199 }
200 return MessageFormat.format(msg, args);
201 }
202 }