122 lines
4.3 KiB
Java
122 lines
4.3 KiB
Java
/*
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* Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.nio.ch;
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import java.io.*;
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import java.net.SocketException;
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import java.net.SocketUtil;
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import java.nio.ByteBuffer;
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import cli.System.Net.Sockets.SocketFlags;
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/**
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* Allows different platforms to call different native methods
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* for read and write operations.
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*/
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class SocketDispatcher extends NativeDispatcher
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{
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int read(FileDescriptor fd, byte[] buf, int offset, int length) throws IOException {
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if (length == 0)
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{
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return 0;
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}
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try
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{
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if (false) throw new cli.System.Net.Sockets.SocketException();
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if (false) throw new cli.System.ObjectDisposedException("");
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int read = fd.getSocket().Receive(buf, offset, length, SocketFlags.wrap(SocketFlags.None));
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return read == 0 ? IOStatus.EOF : read;
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}
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catch (cli.System.Net.Sockets.SocketException x)
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{
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if (x.get_ErrorCode() == SocketUtil.WSAESHUTDOWN)
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{
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// the socket was shutdown, so we have to return EOF
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return IOStatus.EOF;
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}
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else if (x.get_ErrorCode() == SocketUtil.WSAEWOULDBLOCK)
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{
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// nothing to read and would block
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return IOStatus.UNAVAILABLE;
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}
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throw SocketUtil.convertSocketExceptionToIOException(x);
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}
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catch (cli.System.ObjectDisposedException x1)
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{
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throw new SocketException("Socket is closed");
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}
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}
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int write(FileDescriptor fd, byte[] buf, int offset, int length) throws IOException {
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try
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{
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if (false) throw new cli.System.Net.Sockets.SocketException();
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if (false) throw new cli.System.ObjectDisposedException("");
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return fd.getSocket().Send(buf, offset, length, SocketFlags.wrap(SocketFlags.None));
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}
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catch (cli.System.Net.Sockets.SocketException x)
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{
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if (x.get_ErrorCode() == SocketUtil.WSAEWOULDBLOCK)
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{
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return IOStatus.UNAVAILABLE;
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}
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throw SocketUtil.convertSocketExceptionToIOException(x);
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}
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catch (cli.System.ObjectDisposedException x1)
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{
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throw new SocketException("Socket is closed");
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}
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}
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native long read(FileDescriptor fd, ByteBuffer[] bufs, int offset, int length) throws IOException;
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native long write(FileDescriptor fd, ByteBuffer[] bufs, int offset, int length) throws IOException;
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void close(FileDescriptor fd) throws IOException {
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}
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void preClose(FileDescriptor fd) throws IOException {
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closeImpl(fd);
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}
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static void closeImpl(FileDescriptor fd) throws IOException {
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try
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{
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if (false) throw new cli.System.Net.Sockets.SocketException();
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if (false) throw new cli.System.ObjectDisposedException("");
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fd.getSocket().Close();
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}
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catch (cli.System.Net.Sockets.SocketException x)
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{
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throw java.net.SocketUtil.convertSocketExceptionToIOException(x);
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}
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catch (cli.System.ObjectDisposedException x1)
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{
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throw new java.net.SocketException("Socket is closed");
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}
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}
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}
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