1 /*
   2  * Copyright (c) 2018, 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 
  26 package jdk.internal.net.rdma;
  27 
  28 import java.io.FileDescriptor;
  29 import java.io.IOException;
  30 import sun.nio.ch.IOUtil;
  31 
  32 public class LinuxRdmaSocketDispatcherImpl {
  33 
  34     static {
  35         java.security.AccessController.doPrivileged(
  36                 new java.security.PrivilegedAction<Void>() {
  37                     public Void run() {
  38                         System.loadLibrary("extnet");
  39                         return null;
  40                     }
  41                 });
  42         IOUtil.load();
  43         init();
  44     }
  45 
  46     LinuxRdmaSocketDispatcherImpl() { }
  47 
  48 
  49     // -- Native methods --
  50 
  51     static native int read0(FileDescriptor fd, long address, int len)
  52             throws IOException;
  53 
  54     static native long readv0(FileDescriptor fd, long address, int len)
  55             throws IOException;
  56 
  57     static native int write0(FileDescriptor fd, long address, int len)
  58             throws IOException;
  59 
  60     static native long writev0(FileDescriptor fd, long address, int len)
  61             throws IOException;
  62 
  63     static native void close0(FileDescriptor fd) throws IOException;
  64 
  65     static native void init();
  66 }