/*
* Copyright (c) 2002, 2006, 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 sun.nio.ch;
import java.io.IOException;
import java.io.FileDescriptor;
import java.nio.ByteBuffer;
import java.nio.channels.*;
import java.nio.channels.spi.*;
/**
* Pipe.SourceChannel implementation based on socket connection.
*/
class SourceChannelImpl
extends Pipe.SourceChannel
implements SelChImpl
{
// The SocketChannel assoicated with this pipe
SocketChannel sc;
public FileDescriptor getFD() {
return ((SocketChannelImpl) sc).getFD();
}
public int getFDVal() {
return ((SocketChannelImpl) sc).getFDVal();
}
SourceChannelImpl(SelectorProvider sp, SocketChannel sc) {
super(sp);
this.sc = sc;
}
protected void implCloseSelectableChannel() throws IOException {
if (!isRegistered())
kill();
}
public void kill() throws IOException {
sc.close();
}
protected void implConfigureBlocking(boolean block) throws IOException {
sc.configureBlocking(block);
}
public boolean translateReadyOps(int ops, int initialOps,
SelectionKeyImpl sk) {
int intOps = sk.nioInterestOps(); // Do this just once, it synchronizes
int oldOps = sk.nioReadyOps();
int newOps = initialOps;
if ((ops & PollArrayWrapper.POLLNVAL) != 0)
throw new Error("POLLNVAL detected");
if ((ops & (PollArrayWrapper.POLLERR
| PollArrayWrapper.POLLHUP)) != 0) {
newOps = intOps;
sk.nioReadyOps(newOps);
return (newOps & ~oldOps) != 0;
}
if (((ops & PollArrayWrapper.POLLIN) != 0) &&
((intOps & SelectionKey.OP_READ) != 0))
newOps |= SelectionKey.OP_READ;
sk.nioReadyOps(newOps);
return (newOps & ~oldOps) != 0;
}
public boolean translateAndUpdateReadyOps(int ops, SelectionKeyImpl sk) {
return translateReadyOps(ops, sk.nioReadyOps(), sk);
}
public boolean translateAndSetReadyOps(int ops, SelectionKeyImpl sk) {
return translateReadyOps(ops, 0, sk);
}
public void translateAndSetInterestOps(int ops, SelectionKeyImpl sk) {
if ((ops & SelectionKey.OP_READ) != 0)
ops = PollArrayWrapper.POLLIN;
sk.selector.putEventOps(sk, ops);
}
public int read(ByteBuffer dst) throws IOException {
try {
return sc.read(dst);
} catch (AsynchronousCloseException x) {
close();
throw x;
}
}
public long read(ByteBuffer[] dsts, int offset, int length)
throws IOException
{
if ((offset < 0) || (length < 0) || (offset > dsts.length - length))
throw new IndexOutOfBoundsException();
try {
return read(Util.subsequence(dsts, offset, length));
} catch (AsynchronousCloseException x) {
close();
throw x;
}
}
public long read(ByteBuffer[] dsts) throws IOException {
try {
return sc.read(dsts);
} catch (AsynchronousCloseException x) {
close();
throw x;
}
}
}