JDK 17 java.base.jmod is the JMOD file for JDK 17 Base module.

JDK 17 Base module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\java.base.jmod.

JDK 17 Base module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.

JDK 17 Base module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\java.base.

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

⏎ java/net/SocketCleanable.java

/*
 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package java.net;

import jdk.internal.access.JavaIOFileDescriptorAccess;
import jdk.internal.access.SharedSecrets;
import jdk.internal.ref.CleanerFactory;
import jdk.internal.ref.PhantomCleanable;

import java.io.FileDescriptor;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.lang.ref.Cleaner;

import sun.net.ResourceManager;

/**
 * Cleanable for a socket/datagramsocket FileDescriptor when it becomes phantom reachable.
 * Create a cleanup if the raw fd != -1. Windows closes sockets using the fd.
 * Subclassed from {@code PhantomCleanable} so that {@code clear} can be
 * called to disable the cleanup when the socket fd is closed by any means
 * other than calling {@link FileDescriptor#close}.
 * Otherwise, it might incorrectly close the handle or fd after it has been reused.
 */
final class SocketCleanable extends PhantomCleanable<FileDescriptor> {

    // Access to FileDescriptor private fields
    private static final JavaIOFileDescriptorAccess fdAccess =
            SharedSecrets.getJavaIOFileDescriptorAccess();

    // Native function to call NET_SocketClose(fd)
    // Used only for last chance cleanup.
    private static native void cleanupClose0(int fd) throws IOException;

    // The raw fd to close
    private final int fd;

    // true for socket, false for datagram socket
    private final boolean stream;

    /**
     * Register a socket specific Cleanable with the FileDescriptor
     * if the FileDescriptor is non-null and the raw fd is != -1.
     *
     * @param fdo     the FileDescriptor; may be null
     * @param stream  false for datagram socket
     */
    static void register(FileDescriptor fdo, boolean stream) {
        if (fdo != null && fdo.valid()) {
            int fd = fdAccess.get(fdo);
            fdAccess.registerCleanup(fdo,
                    new SocketCleanable(fdo, CleanerFactory.cleaner(),
                                        fd, stream));
        }
    }

    /**
     * Unregister a Cleanable from the FileDescriptor.
     * @param fdo the FileDescriptor; may be null
     */
    static void unregister(FileDescriptor fdo) {
        if (fdo != null) {
            fdAccess.unregisterCleanup(fdo);
        }
    }

    /**
     * Constructor for a phantom cleanable reference.
     *
     * @param obj     the object to monitor
     * @param cleaner the cleaner
     * @param fd      file descriptor to close
     * @param stream  false for datagram socket
     */
    private SocketCleanable(FileDescriptor obj, Cleaner cleaner,
                            int fd, boolean stream) {
        super(obj, cleaner);
        this.fd = fd;
        this.stream = stream;
    }

    /**
     * Close the native handle or fd.
     */
    @Override
    protected void performCleanup() {
        try {
            cleanupClose0(fd);
        } catch (IOException ioe) {
            throw new UncheckedIOException("close", ioe);
        } finally {
            if (!stream) {
                ResourceManager.afterUdpClose();
            }
        }
    }
}

⏎ java/net/SocketCleanable.java

Or download all of them as a single archive file:

File name: java.base-17.0.5-src.zip
File size: 8883851 bytes
Release date: 2022-09-13
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