1 /*
2 * Copyright (c) 2015, 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 * @test
26 * @summary Test StringSharingPluginTest
27 * @author Jean-Francois Denise
28 * @library ../../lib
29 * @modules java.base/jdk.internal.jimage
30 * java.base/jdk.internal.jimage.decompressor
31 * jdk.jlink/jdk.tools.jlink.internal
32 * jdk.jlink/jdk.tools.jlink.internal.plugins
33 * jdk.jlink/jdk.tools.jmod
34 * jdk.jlink/jdk.tools.jimage
35 * jdk.jdeps/com.sun.tools.classfile
36 * jdk.compiler
37 * @run build tests.*
38 * @run main StringSharingPluginTest
39 */
40
41 import java.io.IOException;
42 import java.io.UncheckedIOException;
43 import java.nio.ByteBuffer;
44 import java.nio.ByteOrder;
45 import java.nio.file.Files;
46 import java.nio.file.Path;
47 import java.util.Arrays;
48 import java.util.HashMap;
49 import java.util.List;
50 import java.util.Map;
51 import java.util.function.Consumer;
52
53 import jdk.internal.jimage.decompressor.CompressedResourceHeader;
54 import jdk.internal.jimage.decompressor.StringSharingDecompressor;
55 import jdk.tools.jlink.internal.ResourcePoolManager;
56 import jdk.tools.jlink.internal.StringTable;
57 import jdk.tools.jlink.internal.plugins.StringSharingPlugin;
58 import jdk.tools.jlink.plugin.ResourcePoolEntry;
59 import jdk.tools.jlink.plugin.ResourcePool;
60 import jdk.tools.jlink.plugin.Plugin;
61 import tests.Helper;
62 import tests.JImageValidator;
63
64 public class StringSharingPluginTest {
65
66 private static int strID = 1;
67
68 public static void main(String[] args) throws Exception {
69 // JPRT not yet ready for jmods
70 Helper helper = Helper.newHelper();
71 if (helper == null) {
72 System.err.println("Test not run, NO jmods directory");
73 return;
74 }
75
76 List<String> classes = Arrays.asList("toto.Main", "toto.com.foo.bar.X");
77 Path compiledClasses = helper.generateModuleCompiledClasses(
78 helper.getJmodSrcDir(), helper.getJmodClassesDir(), "composite2", classes);
79
80 Map<String, Integer> map = new HashMap<>();
81 Map<Integer, String> reversedMap = new HashMap<>();
82
83 ResourcePoolManager resources = new ResourcePoolManager(ByteOrder.nativeOrder(), new StringTable() {
84 @Override
85 public int addString(String str) {
86 Integer id = map.get(str);
87 if (id == null) {
88 id = strID;
89 map.put(str, id);
90 reversedMap.put(id, str);
91 strID += 1;
92 }
93 return id;
94 }
95
96 @Override
97 public String getString(int id) {
98 throw new UnsupportedOperationException("Not supported yet.");
99 }
100 });
101 Consumer<Path> c = (p) -> {
102 // take only the .class resources.
103 if (Files.isRegularFile(p) && p.toString().endsWith(".class")
104 && !p.toString().endsWith("module-info.class")) {
105 try {
106 byte[] content = Files.readAllBytes(p);
107 String path = p.toString().replace('\\', '/');
108 path = path.substring("/modules".length());
109 if (path.charAt(0) != '/') {
110 path = "/" + path;
111 }
112 ResourcePoolEntry res = ResourcePoolEntry.create(path, content);
113 resources.add(res);
114 } catch (Exception ex) {
115 throw new RuntimeException(ex);
116 }
117 }
118 };
119 try (java.util.stream.Stream<Path> stream = Files.walk(compiledClasses)) {
120 stream.forEach(c);
121 }
122 Plugin plugin = new StringSharingPlugin();
123 ResourcePoolManager resultMgr = new ResourcePoolManager(resources.byteOrder(), resources.getStringTable());
124 ResourcePool result = plugin.transform(resources.resourcePool(), resultMgr.resourcePoolBuilder());
125
126 if (result.isEmpty()) {
127 throw new AssertionError("No result");
128 }
129
130 result.entries().forEach(res -> {
131 if (res.path().endsWith(".class")) {
132 try {
133 byte[] uncompacted = StringSharingDecompressor.normalize(reversedMap::get, res.contentBytes(),
134 CompressedResourceHeader.getSize());
135 JImageValidator.readClass(uncompacted);
136 } catch (IOException exp) {
137 throw new UncheckedIOException(exp);
138 }
139 }
140 });
141 }
142 }