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// **********************************************************************
//
// Copyright (c) 2003 - 2004
// ZeroC, Inc.
// North Palm Beach, FL, USA
//
// All Rights Reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceUtil/Thread.h>
#include <IceUtil/Exception.h>
#include <IceUtil/Monitor.h>
#include <IceUtil/Mutex.h>
#include <list>
using namespace std;
class WorkQueue : public IceUtil::Thread
{
public:
WorkQueue() { }
~WorkQueue() { }
virtual void
run()
{
while(1)
{
string item = nextItem();
if(item == "destroy")
{
break;
}
cout << "work item: " << item << endl;
IceUtil::ThreadControl::sleep(IceUtil::Time::seconds(1));
}
}
void
add(const string& item)
{
IceUtil::Monitor<IceUtil::Mutex>::Lock lock(_monitor);
if(_queue.empty())
{
_monitor.notify();
}
_queue.push_back(item);
}
private:
string
nextItem()
{
IceUtil::Monitor<IceUtil::Mutex>::Lock lock(_monitor);
while(_queue.empty())
{
_monitor.wait();
}
string item = _queue.front();
_queue.pop_front();
return item;
}
IceUtil::Monitor<IceUtil::Mutex> _monitor;
list<string> _queue;
};
typedef IceUtil::Handle<WorkQueue> WorkQueuePtr;
int
main()
{
try
{
WorkQueuePtr h = new WorkQueue();
IceUtil::ThreadControl control = h->start();
cout << "Pushing work items";
cout << '.' << flush;
h->add("item1");
cout << '.' << flush;
h->add("item2");
cout << '.' << flush;
h->add("item3");
cout << '.' << flush;
h->add("item4");
cout << '.' << flush;
h->add("item5");
cout << '.' << flush;
h->add("destroy");
cout << " ok" << endl;
cout << "Waiting for WorkQueue to terminate" << endl;
control.join();
}
catch(const IceUtil::Exception& ex)
{
cerr << ex << endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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