1 /*
   2  * Copyright (c) 2017, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package jdk.net;
  26 
  27 import java.net.SocketException;
  28 import java.security.AccessController;
  29 import java.security.PrivilegedAction;
  30 import jdk.net.ExtendedSocketOptions.PlatformSocketOptions;
  31 
  32 class LinuxSocketOptions extends PlatformSocketOptions {
  33 
  34     public LinuxSocketOptions() {
  35     }
  36 
  37     @Override
  38     void setQuickAck(int fd, int on) throws SocketException {
  39         setQuickAck0(fd, on);
  40     }
  41 
  42     @Override
  43     boolean getQuickAck(int fd) throws SocketException {
  44         return getQuickAck0(fd);
  45     }
  46 
  47     @Override
  48     public boolean quickAckSupported() {
  49         return quickAckSupported0();
  50     }
  51 
  52     native static private void setQuickAck0(int fd, int on) throws SocketException;
  53 
  54     native static private boolean getQuickAck0(int fd) throws SocketException;
  55 
  56     native static private boolean quickAckSupported0();
  57 
  58     static {
  59         AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
  60             System.loadLibrary("extnet");
  61             return null;
  62         });
  63     }
  64 }