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// **********************************************************************
//
// Copyright (c) 2003-2006 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.
//
// **********************************************************************
#ifndef ICE_EVENT_HANDLER_H
#define ICE_EVENT_HANDLER_H
#include <IceUtil/Shared.h>
#include <Ice/EventHandlerF.h>
#include <Ice/InstanceF.h>
#include <Ice/ThreadPoolF.h>
#include <Ice/BasicStream.h>
namespace Ice
{
class LocalException;
}
namespace IceInternal
{
class EventHandler : virtual public ::IceUtil::Shared
{
public:
InstancePtr instance() const;
//
// Return true if the handler is for a datagram transport, false otherwise.
//
virtual bool datagram() const = 0;
//
// Return true if read() must be called before calling message().
//
virtual bool readable() const = 0;
//
// Read data via the event handler. May only be called if
// readable() returns true.
//
virtual void read(BasicStream&) = 0;
//
// A complete message has been received.
//
virtual void message(BasicStream&, const ThreadPoolPtr&) = 0;
//
// Will be called if the event handler is finally
// unregistered. (Calling unregister() does not unregister
// immediately.)
//
virtual void finished(const ThreadPoolPtr&) = 0;
//
// Propagate an exception to the event handler.
//
virtual void exception(const ::Ice::LocalException&) = 0;
//
// Get a textual representation of the event handler.
//
virtual std::string toString() const = 0;
protected:
EventHandler(const InstancePtr&);
virtual ~EventHandler();
const InstancePtr _instance;
private:
//
// The _stream data member is for use by ThreadPool only
//
BasicStream _stream;
friend class ThreadPool;
};
}
#endif
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