src/jdk.net/linux/classes/jdk/net/LinuxSocketOptions.java - master - githubmirror/jdk11u

src/jdk.net/linux/classes/jdk/net/LinuxSocketOptions.java
103 строки4 KB
Vyom Tewari
8194298: Add support for per Socket configuration of TCP keepalive
30 май 2018, 14:06
30 май 2018, 14:066a48db9
/*
 * Copyright (c) 2017, 2018 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.net;

import java.net.SocketException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import jdk.net.ExtendedSocketOptions.PlatformSocketOptions;

class LinuxSocketOptions extends PlatformSocketOptions {

    public LinuxSocketOptions() {
    }

    @Override
    void setQuickAck(int fd, boolean on) throws SocketException {
        setQuickAck0(fd, on);
    }

    @Override
    boolean getQuickAck(int fd) throws SocketException {
        return getQuickAck0(fd);
    }

    @Override
    public boolean quickAckSupported() {
        return quickAckSupported0();
    }

    @Override
    boolean keepAliveOptionsSupported() {
        return keepAliveOptionsSupported0();
    }

    @Override
    void setTcpkeepAliveProbes(int fd, final int value) throws SocketException {
        setTcpkeepAliveProbes0(fd, value);
    }

    @Override
    void setTcpKeepAliveTime(int fd, final int value) throws SocketException {
        setTcpKeepAliveTime0(fd, value);
    }

    @Override
    void setTcpKeepAliveIntvl(int fd, final int value) throws SocketException {
        setTcpKeepAliveIntvl0(fd, value);
    }

    @Override
    int getTcpkeepAliveProbes(int fd) throws SocketException {
        return getTcpkeepAliveProbes0(fd);
    }

    @Override
    int getTcpKeepAliveTime(int fd) throws SocketException {
        return getTcpKeepAliveTime0(fd);
    }

    @Override
    int getTcpKeepAliveIntvl(int fd) throws SocketException {
        return getTcpKeepAliveIntvl0(fd);
    }

    private static native void setTcpkeepAliveProbes0(int fd, int value) throws SocketException;
    private static native void setTcpKeepAliveTime0(int fd, int value) throws SocketException;
    private static native void setTcpKeepAliveIntvl0(int fd, int value) throws SocketException;
    private static native int getTcpkeepAliveProbes0(int fd) throws SocketException;
    private static native int getTcpKeepAliveTime0(int fd) throws SocketException;
    private static native int getTcpKeepAliveIntvl0(int fd) throws SocketException;
    private static native void setQuickAck0(int fd, boolean on) throws SocketException;
    private static native boolean getQuickAck0(int fd) throws SocketException;
    private static native boolean keepAliveOptionsSupported0();
    private static native boolean quickAckSupported0();
    static {
        AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
            System.loadLibrary("extnet");
            return null;
        });
    }
}