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// This may look like C, but it's really -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// SHMIOP_Connect.h
//
// = AUTHOR
// Nanbor Wang <nanbor@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 "ace/MEM_Acceptor.h"
#include "ace/Synch.h"
#include "ace/Svc_Handler.h"
#include "tao/corbafwd.h"
#include "tao/Wait_Strategy.h"
#include "tao/Connection_Handler.h"
#include "tao/SHMIOP_Transport.h"
typedef ACE_Svc_Handler<ACE_MEM_STREAM, ACE_NULL_SYNCH>
TAO_SHMIOP_SVC_HANDLER;
// ****************************************************************
class TAO_SHMIOP_Handler_Base : public TAO_SHMIOP_SVC_HANDLER
{
public:
TAO_SHMIOP_Handler_Base (ACE_Thread_Manager *t);
TAO_SHMIOP_Handler_Base (TAO_ORB_Core *orb_core);
virtual TAO_Transport *transport (void) = 0;
};
class TAO_Export TAO_SHMIOP_Client_Connection_Handler : public TAO_SHMIOP_Handler_Base,
public TAO_Connection_Handler
{
// = TITLE
// <Svc_Handler> used on the client side and returned by the
// <TAO_CONNECTOR>.
public:
// = Intialization method.
TAO_SHMIOP_Client_Connection_Handler (ACE_Thread_Manager *t = 0,
TAO_ORB_Core* orb_core = 0,
CORBA::Boolean flag = 0);
virtual ~TAO_SHMIOP_Client_Connection_Handler (void);
// = <Connector> hook.
virtual int open (void *);
// Activation template method.
// = Event Handler overloads
virtual int handle_input (ACE_HANDLE = ACE_INVALID_HANDLE);
// Called when a response from a twoway invocation is available.
virtual int handle_timeout (const ACE_Time_Value &tv,
const void *arg = 0);
// Called when buffering timer expires.
virtual int handle_close (ACE_HANDLE = ACE_INVALID_HANDLE,
ACE_Reactor_Mask = ACE_Event_Handler::NULL_MASK);
// Perform appropriate closing.
virtual int handle_close_i (ACE_HANDLE = ACE_INVALID_HANDLE,
ACE_Reactor_Mask = ACE_Event_Handler::NULL_MASK);
// Perform appropriate closing but without grabbing any locks.
virtual int close (u_long flags = 0);
// Object termination hook.
virtual TAO_Transport *transport (void);
// Return the transport objects
protected:
int handle_cleanup (void);
// This method deregisters the handler from the reactor and closes it.
TAO_SHMIOP_Client_Transport transport_;
// Reference to the transport object, it is owned by this class.
private:
virtual int handle_input_i (ACE_HANDLE = ACE_INVALID_HANDLE,
ACE_Time_Value *max_wait_time = 0);
// Will not be called at all. As a matter of fact should not be
// called. This is just to override the pure virtual function in the
// TAO_Connection_Handler class
};
// ****************************************************************
class TAO_Export TAO_SHMIOP_Server_Connection_Handler : public TAO_SHMIOP_Handler_Base,
public TAO_Connection_Handler
{
// = TITLE
// Handles requests on a single connection in a server.
public:
TAO_SHMIOP_Server_Connection_Handler (ACE_Thread_Manager* t = 0);
TAO_SHMIOP_Server_Connection_Handler (TAO_ORB_Core *orb_core,
CORBA::Boolean flag,
void *);
// Constructor.
// Last argument currently not used.
~TAO_SHMIOP_Server_Connection_Handler (void);
virtual int open (void *);
// Called by the <Strategy_Acceptor> when the handler is completely
// connected. Argument is unused.
// = 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);
virtual int svc (void);
// Only used when the handler is turned into an active object by
// calling <activate>. This serves as the event loop in such cases.
// = Template Methods Called by <handle_input>
TAO_Transport *transport (void);
protected:
// = Event Handler overloads
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);
// 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_close (ACE_HANDLE = ACE_INVALID_HANDLE,
ACE_Reactor_Mask = ACE_Event_Handler::NULL_MASK);
// Perform appropriate closing.
protected:
TAO_SHMIOP_Server_Transport transport_;
// @@ New transport object reference.
TAO_Pluggable_Messaging *acceptor_factory_;
// Messaging acceptor factory
u_long refcount_;
// 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.
};
#if defined (__ACE_INLINE__)
#include "tao/SHMIOP_Connect.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_HAS_SHMIOP && TAO_HAS_SHMIOP != 0 */
#include "ace/post.h"
#endif /* TAO_SHMIOP_CONNECT_H */
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