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// **********************************************************************
//
// Copyright (c) 2003-2007 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
import Demo.*;
public class WorkQueue extends Thread
{
class CallbackEntry
{
AMD_Hello_sayHello cb;
int delay;
}
public synchronized void
run()
{
while(!_done)
{
if(_callbacks.size() == 0)
{
try
{
wait();
}
catch(java.lang.InterruptedException ex)
{
}
}
if(_callbacks.size() != 0)
{
//
// Get next work item.
//
CallbackEntry entry = (CallbackEntry)_callbacks.getFirst();
//
// Wait for the amount of time indicated in delay to
// emulate a process that takes a significant period of
// time to complete.
//
try
{
wait(entry.delay);
}
catch(java.lang.InterruptedException ex)
{
}
if(!_done)
{
//
// Print greeting and send response.
//
_callbacks.removeFirst();
System.err.println("Belated Hello World!");
entry.cb.ice_response();
}
}
}
//
// Throw exception for any outstanding requests.
//
java.util.Iterator p = _callbacks.iterator();
while(p.hasNext())
{
CallbackEntry entry = (CallbackEntry)p.next();
entry.cb.ice_exception(new RequestCanceledException());
}
}
public synchronized void
add(AMD_Hello_sayHello cb, int delay)
{
if(!_done)
{
//
// Add the work item.
//
CallbackEntry entry = new CallbackEntry();
entry.cb = cb;
entry.delay = delay;
if(_callbacks.size() == 0)
{
notify();
}
_callbacks.add(entry);
}
else
{
//
// Destroyed, throw exception.
//
cb.ice_exception(new RequestCanceledException());
}
}
public synchronized void
destroy()
{
_done = true;
notify();
}
private java.util.LinkedList _callbacks = new java.util.LinkedList();
private boolean _done = false;
}
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