| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package jdk.tools.jlink.internal.plugins; |
| |
| import java.lang.reflect.Method; |
| import java.util.Arrays; |
| import java.util.EnumSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| import jdk.tools.jlink.plugin.ResourcePoolEntry; |
| import jdk.tools.jlink.plugin.PluginException; |
| import jdk.tools.jlink.plugin.ResourcePool; |
| import jdk.tools.jlink.plugin.ResourcePoolBuilder; |
| import jdk.tools.jlink.plugin.Plugin; |
| |
| /** |
| * Plugin to generate java.lang.invoke classes. |
| */ |
| public final class GenerateJLIClassesPlugin implements Plugin { |
| |
| private static final String NAME = "generate-jli-classes"; |
| |
| private static final String BMH_PARAM = "bmh"; |
| |
| private static final String BMH_SPECIES_PARAM = "bmh-species"; |
| |
| private static final String DESCRIPTION = PluginsResourceBundle.getDescription(NAME); |
| |
| private static final String BMH = "java/lang/invoke/BoundMethodHandle"; |
| |
| private static final Method FACTORY_METHOD; |
| |
| List<String> speciesTypes; |
| |
| public GenerateJLIClassesPlugin() { |
| } |
| |
| @Override |
| public String getName() { |
| return NAME; |
| } |
| |
| @Override |
| public String getDescription() { |
| return DESCRIPTION; |
| } |
| |
| @Override |
| public Set<State> getState() { |
| return EnumSet.of(State.AUTO_ENABLED, State.FUNCTIONAL); |
| } |
| |
| @Override |
| public boolean hasArguments() { |
| return true; |
| } |
| |
| @Override |
| public String getArgumentsDescription() { |
| return PluginsResourceBundle.getArgument(NAME); |
| } |
| |
| /** |
| * @return the default Species forms to generate. |
| * |
| * This list was derived from running a Java concatenating strings |
| * with -Djava.lang.invoke.stringConcat=MH_INLINE_SIZED_EXACT set |
| * plus a subset of octane. A better long-term solution is to define |
| * and run a set of quick generators and extracting this list as a |
| * step in the build process. |
| */ |
| public static List<String> defaultSpecies() { |
| return List.of("LL", "L3", "L4", "L5", "L6", "L7", "L7I", |
| "L7II", "L7IIL", "L8", "L9", "L10", "L10I", "L10II", "L10IIL", |
| "L11", "L12", "L13", "LI", "D", "L3I", "LIL", "LLI", "LLIL", |
| "LILL", "I", "LLILL"); |
| } |
| |
| @Override |
| public void configure(Map<String, String> config) { |
| String mainArgument = config.get(NAME); |
| |
| // Enable by default |
| boolean bmhEnabled = true; |
| if (mainArgument != null) { |
| Set<String> args = Arrays.stream(mainArgument.split(",")) |
| .collect(Collectors.toSet()); |
| if (!args.contains(BMH_PARAM)) { |
| bmhEnabled = false; |
| } |
| } |
| |
| if (!bmhEnabled) { |
| speciesTypes = List.of(); |
| } else { |
| String args = config.get(BMH_SPECIES_PARAM); |
| List<String> bmhSpecies; |
| if (args != null && !args.isEmpty()) { |
| bmhSpecies = Arrays.stream(args.split(",")) |
| .map(String::trim) |
| .filter(s -> !s.isEmpty()) |
| .collect(Collectors.toList()); |
| } else { |
| bmhSpecies = defaultSpecies(); |
| } |
| |
| // Expand BMH species signatures |
| speciesTypes = bmhSpecies.stream() |
| .map(type -> expandSignature(type)) |
| .collect(Collectors.toList()); |
| |
| // Validation check |
| for (String type : speciesTypes) { |
| for (char c : type.toCharArray()) { |
| if ("LIJFD".indexOf(c) < 0) { |
| throw new PluginException("All characters must " |
| + "correspond to a basic field type: LIJFD"); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public ResourcePool transform(ResourcePool in, ResourcePoolBuilder out) { |
| in.entries().forEach(data -> { |
| if (("/java.base/" + BMH + ".class").equals(data.path())) { |
| // Add BoundMethodHandle unchanged |
| out.add(data); |
| speciesTypes.forEach(types -> generateConcreteClass(types, data, out)); |
| } else { |
| out.add(data); |
| } |
| }); |
| |
| return out.build(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private void generateConcreteClass(String types, ResourcePoolEntry data, ResourcePoolBuilder out) { |
| try { |
| // Generate class |
| Map.Entry<String, byte[]> result = (Map.Entry<String, byte[]>) |
| FACTORY_METHOD.invoke(null, types); |
| String className = result.getKey(); |
| byte[] bytes = result.getValue(); |
| |
| // Add class to pool |
| ResourcePoolEntry ndata = ResourcePoolEntry.create( |
| "/java.base/" + className + ".class", |
| bytes); |
| out.add(ndata); |
| } catch (Exception ex) { |
| throw new PluginException(ex); |
| } |
| } |
| |
| static { |
| try { |
| Class<?> BMHFactory = Class.forName("java.lang.invoke.BoundMethodHandle$Factory"); |
| Method genClassMethod = BMHFactory.getDeclaredMethod("generateConcreteBMHClassBytes", |
| String.class); |
| genClassMethod.setAccessible(true); |
| FACTORY_METHOD = genClassMethod; |
| } catch (Exception e) { |
| throw new PluginException(e); |
| } |
| } |
| |
| // Convert LL -> LL, L3 -> LLL |
| private static String expandSignature(String signature) { |
| StringBuilder sb = new StringBuilder(); |
| char last = 'X'; |
| int count = 0; |
| for (int i = 0; i < signature.length(); i++) { |
| char c = signature.charAt(i); |
| if (c >= '0' && c <= '9') { |
| count *= 10; |
| count += (c - '0'); |
| } else { |
| for (int j = 1; j < count; j++) { |
| sb.append(last); |
| } |
| sb.append(c); |
| last = c; |
| count = 0; |
| } |
| } |
| for (int j = 1; j < count; j++) { |
| sb.append(last); |
| } |
| return sb.toString(); |
| } |
| } |