summaryrefslogtreecommitdiff
path: root/TAO/tao/IIOP_Connection_Handler.h
blob: aee04e27cc049baaca344033291d0fff81d36854 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
// This may look like C, but it's really -*- C++ -*-
// ===================================================================
/**
 *  @file   IIOP_Connection_Handler.h
 *
 *  $Id$
 *
 *  @author Originally by Chris Cleeland as IIOP_Connect.h
 *  @author modified by Balachandran Natarajan <bala@cs.wustl.edu>
 */
// ===================================================================

#ifndef TAO_IIOP_CONNECTION_HANDLER_H
#define TAO_IIOP_CONNECTION_HANDLER_H
#include "ace/pre.h"

#include "ace/Reactor.h"

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

#include "ace/Acceptor.h"

#include "tao/corbafwd.h"
#include "tao/Wait_Strategy.h"
#include "tao/Connection_Handler.h"
#include "tao/IIOP_Transport.h"

// Forward Decls
class TAO_Pluggable_Messaging;

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

/**
 * @class TAO_IIOP_Properties
 *
 * @brief TCP protocol properties specification for a set of
 *  connections.
 *
 */

class TAO_Export TAO_IIOP_Properties
{

public:
  int send_buffer_size;
  int recv_buffer_size;
  int no_delay;
};


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

/**
 * @class TAO_IIOP_Connection_Handler
 *
 * @brief  Handles requests on a single connection.
 *
 * The Connection handler which is common for the Acceptor and
 * the Connector
 */


class TAO_Export TAO_IIOP_Connection_Handler : public TAO_IIOP_SVC_HANDLER,
                                               public TAO_Connection_Handler
{

public:

  TAO_IIOP_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_IIOP_Connection_Handler (TAO_ORB_Core *orb_core,
                               CORBA::Boolean flag,
                               void *arg);


  /// Destructor.
  ~TAO_IIOP_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_IIOP_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_;

  /// TCP configuration for this connection.
  TAO_IIOP_Properties *tcp_properties_;
};


#if defined (__ACE_INLINE__)
#include "tao/IIOP_Connection_Handler.i"
#endif /* __ACE_INLINE__ */

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