1 /* 2 * Copyright (c) 2015, 2018, 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.jlink.plugin 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.io.IOException; 43 import java.io.UncheckedIOException; 44 import java.nio.ByteBuffer; 45 import java.nio.ByteOrder; 46 import java.nio.file.Files; 47 import java.nio.file.Path; 48 import java.util.Arrays; 49 import java.util.HashMap; 50 import java.util.List; 51 import java.util.Map; 52 import java.util.function.Consumer; 53 54 import jdk.internal.jimage.decompressor.CompressedResourceHeader; 55 import jdk.internal.jimage.decompressor.StringSharingDecompressor; 56 import jdk.tools.jlink.internal.ResourcePoolManager; 57 import jdk.tools.jlink.internal.StringTable; 58 import jdk.tools.jlink.internal.plugins.StringSharingPlugin; 59 import jdk.tools.jlink.plugin.ResourcePoolEntry; 60 import jdk.tools.jlink.plugin.ResourcePool; 61 import jdk.tools.jlink.plugin.Plugin; 62 import tests.Helper; 63 import tests.JImageValidator; 64 65 public class StringSharingPluginTest { 66 67 private static int strID = 1; 68 main(String[] args)69 public static void main(String[] args) throws Exception { 70 Helper helper = Helper.newHelper(); 71 if (helper == null) { 72 // Skip test if the jmods directory is missing (e.g. exploded image) 73 System.err.println("Test not run, NO jmods directory"); 74 return; 75 } 76 77 List<String> classes = Arrays.asList("toto.Main", "toto.com.foo.bar.X"); 78 Path compiledClasses = helper.generateModuleCompiledClasses( 79 helper.getJmodSrcDir(), helper.getJmodClassesDir(), "composite2", classes); 80 81 Map<String, Integer> map = new HashMap<>(); 82 Map<Integer, String> reversedMap = new HashMap<>(); 83 84 ResourcePoolManager resources = new ResourcePoolManager(ByteOrder.nativeOrder(), new StringTable() { 85 @Override 86 public int addString(String str) { 87 Integer id = map.get(str); 88 if (id == null) { 89 id = strID; 90 map.put(str, id); 91 reversedMap.put(id, str); 92 strID += 1; 93 } 94 return id; 95 } 96 97 @Override 98 public String getString(int id) { 99 throw new UnsupportedOperationException("Not supported yet."); 100 } 101 }); 102 Consumer<Path> c = (p) -> { 103 // take only the .class resources. 104 if (Files.isRegularFile(p) && p.toString().endsWith(".class") 105 && !p.toString().endsWith("module-info.class")) { 106 try { 107 byte[] content = Files.readAllBytes(p); 108 String path = p.toString().replace('\\', '/'); 109 path = path.substring("/modules".length()); 110 if (path.charAt(0) != '/') { 111 path = "/" + path; 112 } 113 ResourcePoolEntry res = ResourcePoolEntry.create(path, content); 114 resources.add(res); 115 } catch (Exception ex) { 116 throw new RuntimeException(ex); 117 } 118 } 119 }; 120 try (java.util.stream.Stream<Path> stream = Files.walk(compiledClasses)) { 121 stream.forEach(c); 122 } 123 Plugin plugin = new StringSharingPlugin(); 124 ResourcePoolManager resultMgr = new ResourcePoolManager(resources.byteOrder(), resources.getStringTable()); 125 ResourcePool result = plugin.transform(resources.resourcePool(), resultMgr.resourcePoolBuilder()); 126 127 if (result.isEmpty()) { 128 throw new AssertionError("No result"); 129 } 130 131 result.entries().forEach(res -> { 132 if (res.path().endsWith(".class")) { 133 try { 134 byte[] uncompacted = StringSharingDecompressor.normalize(reversedMap::get, res.contentBytes(), 135 CompressedResourceHeader.getSize()); 136 JImageValidator.readClass(uncompacted); 137 } catch (IOException exp) { 138 throw new UncheckedIOException(exp); 139 } 140 } 141 }); 142 } 143 } 144