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/*
* Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This source code is provided to illustrate the usage of a given feature
* or technique and has been deliberately simplified. Additional steps
* required for a production-quality application, such as security checks,
* input validation and proper error handling, might not be present in
* this sample code.
*/
import java.io.*;
import java.nio.channels.*;
import java.util.*;
/**
* A Multi-threaded dispatcher.
* <P>
* In this example, one thread does accepts, and the second
* does read/writes.
*
* @author Mark Reinhold
* @author Brad R. Wetmore
*/
class DispatcherN implements Dispatcher {
private Selector sel;
DispatcherN() throws IOException {
sel = Selector.open();
}
public void run() {
for (;;) {
try {
dispatch();
} catch (IOException x) {
x.printStackTrace();
}
}
}
private Object gate = new Object();
private void dispatch() throws IOException {
sel.select();
for (Iterator i = sel.selectedKeys().iterator(); i.hasNext(); ) {
SelectionKey sk = (SelectionKey)i.next();
i.remove();
Handler h = (Handler)sk.attachment();
h.handle(sk);
}
synchronized (gate) { }
}
public void register(SelectableChannel ch, int ops, Handler h)
throws IOException {
synchronized (gate) {
sel.wakeup();
ch.register(sel, ops, h);
}
}
}
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