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// This may look like C, but it's really -*- 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/corbafwd.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/corbafwd.h"
#include "tao/Wait_Strategy.h"
#include "tao/Connection_Handler.h"
#include "SHMIOP_Transport.h"
// ****************************************************************
/**
* @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:
TAO_SHMIOP_Connection_Handler (ACE_Thread_Manager* t = 0);
/// Constructor. <arg> parameter is used by the Acceptor to pass the
/// protocol configuration properties for this connection.
TAO_SHMIOP_Connection_Handler (TAO_ORB_Core *orb_core,
CORBA::Boolean flag,
void *arg);
/// Destructor.
~TAO_SHMIOP_Connection_Handler (void);
/// Called by the <Strategy_Acceptor> when the handler is completely
/// connected. Argument is unused.
virtual int open (void *);
/// = Active object activation method.
virtual int activate (long flags = THR_NEW_LWP,
int n_threads = 1,
int force_active = 0,
long priority = ACE_DEFAULT_THREAD_PRIORITY,
int grp_id = -1,
ACE_Task_Base *task = 0,
ACE_hthread_t thread_handles[] = 0,
void *stack[] = 0,
size_t stack_size[] = 0,
ACE_thread_t thread_names[] = 0);
/// Only used when the handler is turned into an active object by
/// calling <activate>. This serves as the event loop in such cases.
virtual int svc (void);
/// Perform appropriate closing.
virtual int handle_close (ACE_HANDLE = ACE_INVALID_HANDLE,
ACE_Reactor_Mask = ACE_Event_Handler::NULL_MASK);
/// Return the underlying transport object
TAO_Transport *transport (void);
/// Return the underlying handle
virtual ACE_HANDLE fetch_handle (void);
/// Called when buffering timer expires.
virtual int handle_timeout (const ACE_Time_Value &tv,
const void *arg = 0);
/// Object termination hook.
virtual int close (u_long flags = 0);
/// Add ourselves to Cache.
int add_handler_to_cache (void);
protected:
/// = Event Handler overloads
/// Reads a message from the <peer()>, dispatching and servicing it
/// appropriately.
/// handle_input() just delegates on handle_input_i() which timeouts
/// after <max_wait_time>, this is used in thread-per-connection to
/// ensure that server threads eventually exit.
virtual int handle_input (ACE_HANDLE = ACE_INVALID_HANDLE);
virtual int handle_input_i (ACE_HANDLE = ACE_INVALID_HANDLE,
ACE_Time_Value *max_wait_time = 0);
private:
/// Transport object reference.
TAO_SHMIOP_Transport transport_;
/// Reference count.It is used to count nested upcalls on this
/// svc_handler i.e., the connection can close during nested upcalls,
/// you should not delete the svc_handler until the stack unwinds
/// from the nested upcalls.
u_long refcount_;
};
#if defined (__ACE_INLINE__)
#include "SHMIOP_Connection_Handler.inl"
#endif /* __ACE_INLINE__ */
#endif /* TAO_HAS_SHMIOP && TAO_HAS_SHMIOP != 0 */
#include "ace/post.h"
#endif /* TAO_SHMIOP_CONNECT_H */
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