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#ifndef QPID_BROKER_SESSIONMANAGER_H
#define QPID_BROKER_SESSIONMANAGER_H

/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */

#include <qpid/SessionState.h>
#include <qpid/sys/Time.h>
#include <qpid/sys/Mutex.h>
#include <qpid/RefCounted.h>

#include <set>
#include <vector>
#include <memory>

#include <boost/noncopyable.hpp>
#include <boost/ptr_container/ptr_vector.hpp>
#include <boost/intrusive_ptr.hpp>

namespace qpid {
namespace broker {
class Broker;
class SessionState;
class SessionHandler;

/**
 * Create and manage SessionState objects.
 */
class SessionManager : private boost::noncopyable {
  public:
    SessionManager(const qpid::SessionState::Configuration&, Broker&);
    
    ~SessionManager();
    
    /** Open a new active session, caller takes ownership */
    std::auto_ptr<SessionState> attach(SessionHandler& h, const SessionId& id, bool/*force*/);
    
    /** Return a detached session to the manager, start the timeout counter. */
    void detach(std::auto_ptr<SessionState>);
        
    /** Forget about an attached session. Called by SessionState destructor. */
    void forget(const SessionId&);

    Broker& getBroker() const { return broker; }

    const qpid::SessionState::Configuration& getSessionConfig() const { return config; }

  private:
    typedef boost::ptr_vector<SessionState> Detached; // Sorted in expiry order.
    typedef std::set<SessionId> Attached;

    void eraseExpired();             

    sys::Mutex lock;
    Detached detached;
    Attached attached;
    qpid::SessionState::Configuration config;
    Broker& broker;
};



}} // namespace qpid::broker





#endif  /*!QPID_BROKER_SESSIONMANAGER_H*/