0N/A/*
2362N/A * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage sun.nio.ch;
0N/A
0N/Aimport java.io.*;
0N/A
0N/A/**
0N/A * Allows different platforms to call different native methods
0N/A * for read and write operations.
0N/A */
0N/A
0N/Aabstract class NativeDispatcher
0N/A{
0N/A
0N/A abstract int read(FileDescriptor fd, long address, int len)
0N/A throws IOException;
0N/A
6050N/A /**
6050N/A * Returns {@code true} if pread/pwrite needs to be synchronized with
6050N/A * position sensitive methods.
6050N/A */
6050N/A boolean needsPositionLock() {
6050N/A return false;
6050N/A }
6050N/A
6050N/A int pread(FileDescriptor fd, long address, int len, long position)
6050N/A throws IOException
0N/A {
0N/A throw new IOException("Operation Unsupported");
0N/A }
0N/A
0N/A abstract long readv(FileDescriptor fd, long address, int len)
0N/A throws IOException;
0N/A
0N/A abstract int write(FileDescriptor fd, long address, int len)
0N/A throws IOException;
0N/A
6050N/A int pwrite(FileDescriptor fd, long address, int len, long position)
6050N/A throws IOException
0N/A {
0N/A throw new IOException("Operation Unsupported");
0N/A }
0N/A
0N/A abstract long writev(FileDescriptor fd, long address, int len)
0N/A throws IOException;
0N/A
0N/A abstract void close(FileDescriptor fd) throws IOException;
0N/A
0N/A // Prepare the given fd for closing by duping it to a known internal fd
0N/A // that's already closed. This is necessary on some operating systems
0N/A // (Solaris and Linux) to prevent fd recycling.
0N/A //
0N/A void preClose(FileDescriptor fd) throws IOException {
0N/A // Do nothing by default; this is only needed on Unix
0N/A }
0N/A
0N/A}