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
32 * jdk.jlink/jdk.tools.jlink.internal
33 * jdk.jlink/jdk.tools.jlink.internal.plugins
34 * jdk.jlink/jdk.tools.jmod
35 * jdk.jlink/jdk.tools.jimage
36 * jdk.jdeps/com.sun.tools.classfile
37 * @run build tests.*
38 * @run main StringSharingPluginTest
39 */
40
41 import java.nio.ByteBuffer;
42 import java.nio.ByteOrder;
43 import java.nio.file.Files;
44 import java.nio.file.Path;
45 import java.util.Arrays;
46 import java.util.HashMap;
47 import java.util.List;
48 import java.util.Map;
49 import java.util.function.Consumer;
50
51 import jdk.internal.jimage.decompressor.CompressedResourceHeader;
52 import jdk.internal.jimage.decompressor.StringSharingDecompressor;
53 import jdk.tools.jlink.internal.plugins.StringSharingProvider;
54 import jdk.tools.jlink.internal.ResourcePoolImpl;
55 import jdk.tools.jlink.plugins.ResourcePool;
56 import jdk.tools.jlink.plugins.ResourcePool.Resource;
57 import jdk.tools.jlink.plugins.ResourcePlugin;
58 import jdk.tools.jlink.plugins.StringTable;
59 import tests.Helper;
60 import tests.JImageValidator;
61
62 public class StringSharingPluginTest {
63
64 private static int strID = 1;
65
66 public static void main(String[] args) throws Exception {
67 // JPRT not yet ready for jmods
68 Helper helper = Helper.newHelper();
69 if (helper == null) {
70 System.err.println("Test not run, NO jmods directory");
71 return;
72 }
73
74 List<String> classes = Arrays.asList("toto.Main", "toto.com.foo.bar.X");
75 Path compiledClasses = helper.generateModuleCompiledClasses(
76 helper.getJmodSrcDir(), helper.getJmodClassesDir(), "composite2", classes);
77 ResourcePool resources = new ResourcePoolImpl(ByteOrder.nativeOrder());
78 Consumer<Path> c = (p) -> {
79 // take only the .class resources.
80 if (Files.isRegularFile(p) && p.toString().endsWith(".class")
81 && !p.toString().endsWith("module-info.class")) {
82 try {
83 byte[] content = Files.readAllBytes(p);
84 String path = p.toString();
85 path = path.substring("/modules".length());
86 Resource res = new Resource(path, ByteBuffer.wrap(content));
87 resources.addResource(res);
88 } catch (Exception ex) {
89 throw new RuntimeException(ex);
90 }
91 }
92 };
93 try (java.util.stream.Stream<Path> stream = Files.walk(compiledClasses)) {
94 stream.forEach(c);
95 }
96 ResourcePlugin plugin = new StringSharingProvider().newPlugins(null, null)[0];
97 Map<String, Integer> map = new HashMap<>();
98 Map<Integer, String> reversedMap = new HashMap<>();
99 ResourcePoolImpl result = new ResourcePoolImpl(resources.getByteOrder());
100 plugin.visit(resources, result, new StringTable() {
101 @Override
102 public int addString(String str) {
103 Integer id = map.get(str);
104 if (id == null) {
105 id = strID;
106 map.put(str, id);
107 reversedMap.put(id, str);
108 strID += 1;
109 }
110 return id;
111 }
112
113 @Override
114 public String getString(int id) {
115 throw new UnsupportedOperationException("Not supported yet.");
116 }
117 });
118
119 if (result.isEmpty()) {
120 throw new AssertionError("No result");
121 }
122
123 for (Resource res : result.getResources()) {
124 if (res.getPath().endsWith(".class")) {
125 byte[] uncompacted = StringSharingDecompressor.normalize(reversedMap::get, res.getByteArray(),
126 CompressedResourceHeader.getSize());
127 JImageValidator.readClass(uncompacted);
128 }
129 }
130 }
131 }