JDK 11 jdk.jlink.jmod - JLink Tool

JDK 11 jdk.jlink.jmod is the JMOD file for JDK 11 JLink tool, which can be invoked by the "jlink" command.

JDK 11 JLink tool compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.jlink.jmod.

JDK 11 JLink tool compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 JLink tool source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.jlink.

You can click and view the content of each source code file in the list below.

✍: FYIcenter

jdk/tools/jlink/internal/ModuleSorter.java

/*
 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */
package jdk.tools.jlink.internal;

import jdk.tools.jlink.plugin.PluginException;
import jdk.tools.jlink.plugin.ResourcePoolEntry;
import jdk.tools.jlink.plugin.ResourcePoolModule;
import jdk.tools.jlink.plugin.ResourcePoolModuleView;

import java.lang.module.ModuleDescriptor;
import java.lang.module.ModuleDescriptor.Requires;
import java.lang.module.ModuleDescriptor.Requires.Modifier;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Stream;

/**
 * Helper class to sort modules in topological order
 */
public final class ModuleSorter {
    private final Map<ResourcePoolModule, Set<ResourcePoolModule>> graph = new HashMap<>();
    private final List<ResourcePoolModule> result = new ArrayList<>();

    private final ResourcePoolModuleView moduleView;

    public ModuleSorter(ResourcePoolModuleView moduleView) {
        this.moduleView = moduleView;

        moduleView.modules().forEach(this::addModule);
    }

    private ModuleDescriptor readModuleDescriptor(ResourcePoolModule module) {
        String p = "/" + module.name() + "/module-info.class";
        ResourcePoolEntry content = module.findEntry(p).orElseThrow(() ->
            new PluginException("module-info.class not found for " +
                module.name() + " module")
        );
        ByteBuffer bb = ByteBuffer.wrap(content.contentBytes());
        return ModuleDescriptor.read(bb);
    }

    private ModuleSorter addModule(ResourcePoolModule module) {
        addNode(module);
        // the module graph will be traversed in a stable order for
        // the topological sort. So add the dependences in the module name order
        readModuleDescriptor(module).requires()
                                    .stream()
                                    .sorted(Comparator.comparing(Requires::name))
                                    .forEach(req ->
        {
            ResourcePoolModule dep = moduleView.findModule(req.name()).orElse(null);
            if (dep != null) {
                addNode(dep);
                graph.get(module).add(dep);
            } else if (!req.modifiers().contains(Modifier.STATIC)) {
                throw new PluginException(req.name() + " not found");
            }
        });
        return this;
    }

    private void addNode(ResourcePoolModule module) {
        graph.computeIfAbsent(module, _n -> new LinkedHashSet<>());
    }

    /*
     * The module graph will be traversed in a stable order
     * (traversing the modules and their dependences in alphabetical order)
     * so that it will produce the same result of a given module graph.
     */
    private synchronized void build() {
        if (!result.isEmpty() || graph.isEmpty())
            return;

        Set<ResourcePoolModule> visited = new HashSet<>();
        Set<ResourcePoolModule> done = new HashSet<>();
        graph.keySet().stream()
             .sorted(Comparator.comparing(ResourcePoolModule::name))
             .forEach(node -> visit(node, visited, done));
    }

    public Stream<ResourcePoolModule> sorted() {
        build();
        return result.stream();
    }

    private void visit(ResourcePoolModule node,
                       Set<ResourcePoolModule> visited,
                       Set<ResourcePoolModule> done) {
        if (visited.contains(node)) {
            if (!done.contains(node)) {
                throw new IllegalArgumentException("Cyclic detected: " +
                    node + " " + graph.get(node));
            }
            return;
        }

        // traverse the dependences of the given module which are
        // also sorted in alphabetical order
        visited.add(node);
        graph.get(node).forEach(x -> visit(x, visited, done));
        done.add(node);
        result.add(node);
    }
}

jdk/tools/jlink/internal/ModuleSorter.java

 

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2020-06-30, 5889👍, 0💬