// -*- C++ -*-

// ===================================================================
/**
 *  @file   SHMIOP_Connection_Handler.h
 *
 *  $Id$
 *
 *  @author Originally by Nanbor Wang <nanbor@cs.wustl.edu> as UIOP_Connect.h
 *  @author modified by Balachandran Natarajan <bala@cs.wustl.edu>
 */
// ===================================================================

#ifndef TAO_SHMIOP_CONNECT_H
#define TAO_SHMIOP_CONNECT_H

#include /**/ "ace/pre.h"

#include "tao/orbconf.h"

#if !defined (ACE_LACKS_PRAGMA_ONCE)
#pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */

#if defined (TAO_HAS_SHMIOP) && (TAO_HAS_SHMIOP != 0)

#include "ace/Reactor.h"
#include "ace/Acceptor.h"
#include "tao/Wait_Strategy.h"
#include "tao/Connection_Handler.h"
#include "tao/Strategies/SHMIOP_Transport.h"

// ****************************************************************

TAO_BEGIN_VERSIONED_NAMESPACE_DECL

/**
 * @class TAO_SHMIOP_Connection_Handler
 *
 * @brief  Handles requests on a single connection.
 *
 * The Connection handler which is common for the Acceptor and
 * the Connector
 */
class TAO_Strategies_Export TAO_SHMIOP_Connection_Handler :
  public TAO_SHMIOP_SVC_HANDLER,
  public TAO_Connection_Handler
{

public:
  /// Constructor.
  TAO_SHMIOP_Connection_Handler (ACE_Thread_Manager* t = 0);

  /// Constructor.
  TAO_SHMIOP_Connection_Handler (TAO_ORB_Core *orb_core,
                                 CORBA::Boolean flag);

  /// Destructor.
  ~TAO_SHMIOP_Connection_Handler (void);

  /// Called by the <Strategy_Acceptor> when the handler is completely
  /// connected.  Argument is unused.
  virtual int open (void *);

  //@{
  /**
   * Connection_Handler overloads
   */
  virtual int open_handler (void *);
  //@}

  /// Close called by the Acceptor or Connector when connection
  /// establishment fails.
  int close (u_long = 0);

  //@{
  /** @name Event Handler overloads
   */
  virtual int resume_handler (void);
  virtual int close_connection (void);
  virtual int handle_input (ACE_HANDLE);
  virtual int handle_output (ACE_HANDLE);
  virtual int handle_close (ACE_HANDLE, ACE_Reactor_Mask);
  virtual int handle_timeout (const ACE_Time_Value &current_time,
                              const void *act = 0);
  //@}

  /// Add ourselves to Cache.
  int add_transport_to_cache (void);

protected:

  //@{
  /**
   * @name TAO_Connection Handler overloads
   */
  virtual int release_os_resources (void);
  //@}

private:
  /// Flag that we will be passing to the event handler to indicate
  /// whether the handle will be resumed by the method or not.
  int resume_flag_;

};

TAO_END_VERSIONED_NAMESPACE_DECL

#endif /* TAO_HAS_SHMIOP && TAO_HAS_SHMIOP != 0 */

#include /**/ "ace/post.h"

#endif /* TAO_SHMIOP_CONNECT_H */