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 * jdk.compiler
38 * @run build tests.*
39 * @run main StringSharingPluginTest
40 */
41
42 import java.nio.ByteBuffer;
43 import java.nio.ByteOrder;
44 import java.nio.file.Files;
45 import java.nio.file.Path;
46 import java.util.Arrays;
47 import java.util.HashMap;
48 import java.util.List;
49 import java.util.Map;
50 import java.util.function.Consumer;
51
52 import jdk.internal.jimage.decompressor.CompressedResourceHeader;
53 import jdk.internal.jimage.decompressor.StringSharingDecompressor;
54 import jdk.tools.jlink.internal.plugins.StringSharingProvider;
55 import jdk.tools.jlink.internal.ResourcePoolImpl;
56 import jdk.tools.jlink.plugins.ResourcePool;
57 import jdk.tools.jlink.plugins.ResourcePool.Resource;
58 import jdk.tools.jlink.plugins.ResourcePlugin;
59 import jdk.tools.jlink.plugins.StringTable;
60 import tests.Helper;
61 import tests.JImageValidator;
62
63 public class StringSharingPluginTest {
64
65 private static int strID = 1;
66
67 public static void main(String[] args) throws Exception {
68 // JPRT not yet ready for jmods
69 Helper helper = Helper.newHelper();
70 if (helper == null) {
71 System.err.println("Test not run, NO jmods directory");
72 return;
73 }
74
75 List<String> classes = Arrays.asList("toto.Main", "toto.com.foo.bar.X");
76 Path compiledClasses = helper.generateModuleCompiledClasses(
77 helper.getJmodSrcDir(), helper.getJmodClassesDir(), "composite2", classes);
78 ResourcePool resources = new ResourcePoolImpl(ByteOrder.nativeOrder());
79 Consumer<Path> c = (p) -> {
80 // take only the .class resources.
81 if (Files.isRegularFile(p) && p.toString().endsWith(".class")
82 && !p.toString().endsWith("module-info.class")) {
83 try {
84 byte[] content = Files.readAllBytes(p);
85 String path = p.toString();
86 path = path.substring("/modules".length());
87 Resource res = new Resource(path, ByteBuffer.wrap(content));
88 resources.addResource(res);
89 } catch (Exception ex) {
90 throw new RuntimeException(ex);
91 }
92 }
93 };
94 try (java.util.stream.Stream<Path> stream = Files.walk(compiledClasses)) {
95 stream.forEach(c);
96 }
97 ResourcePlugin plugin = new StringSharingProvider().newPlugins(null, null)[0];
98 Map<String, Integer> map = new HashMap<>();
99 Map<Integer, String> reversedMap = new HashMap<>();
100 ResourcePoolImpl result = new ResourcePoolImpl(resources.getByteOrder());
101 plugin.visit(resources, result, new StringTable() {
102 @Override
103 public int addString(String str) {
104 Integer id = map.get(str);
105 if (id == null) {
106 id = strID;
107 map.put(str, id);
108 reversedMap.put(id, str);
109 strID += 1;
110 }
111 return id;
112 }
113
114 @Override
115 public String getString(int id) {
116 throw new UnsupportedOperationException("Not supported yet.");
117 }
118 });
119
120 if (result.isEmpty()) {
121 throw new AssertionError("No result");
122 }
123
124 for (Resource res : result.getResources()) {
125 if (res.getPath().endsWith(".class")) {
126 byte[] uncompacted = StringSharingDecompressor.normalize(reversedMap::get, res.getByteArray(),
127 CompressedResourceHeader.getSize());
128 JImageValidator.readClass(uncompacted);
129 }
130 }
131 }
132 }