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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
// -*- C++ -*-
//=============================================================================
/**
* @file Acceptor_Impl.cpp
*
* @author Carlos O'Ryan <coryan@uci.edu> Ossama Othman <ossama@dre.vanderbilt.edu>
*/
//=============================================================================
#ifndef TAO_ACCEPTOR_IMPL_CPP
#define TAO_ACCEPTOR_IMPL_CPP
#include "tao/Acceptor_Impl.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/Thread_Per_Connection_Handler.h"
#include "tao/Server_Strategy_Factory.h"
#include "tao/ORB_Core.h"
#include "tao/Transport_Cache_Manager.h"
#include "tao/Thread_Lane_Resources.h"
#include "tao/Transport.h"
#include "tao/debug.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
//////////////////////////////////////////////////////////////////////////////
template <class SVC_HANDLER>
TAO_Creation_Strategy<SVC_HANDLER>::TAO_Creation_Strategy (TAO_ORB_Core *orb_core)
: ACE_Creation_Strategy<SVC_HANDLER> (0, orb_core->reactor()),
orb_core_ (orb_core)
{
}
template <class SVC_HANDLER> int
TAO_Creation_Strategy<SVC_HANDLER>::make_svc_handler (SVC_HANDLER *&sh)
{
if (sh == 0)
{
// Purge connections (if necessary)
this->orb_core_->lane_resources ().transport_cache ().purge ();
ACE_NEW_RETURN (sh,
SVC_HANDLER (this->orb_core_),
-1);
}
return 0;
}
//////////////////////////////////////////////////////////////////////////////
template <class SVC_HANDLER>
TAO_Concurrency_Strategy<SVC_HANDLER>::TAO_Concurrency_Strategy (TAO_ORB_Core *orb_core)
: orb_core_ (orb_core)
{
}
template <class SVC_HANDLER> int
TAO_Concurrency_Strategy<SVC_HANDLER>::activate_svc_handler (SVC_HANDLER *sh,
void *arg)
{
sh->transport ()->opened_as (TAO::TAO_SERVER_ROLE);
// Indicate that this transport was opened in the server role
if (TAO_debug_level > 6)
TAOLIB_DEBUG ((LM_DEBUG,
"TAO (%P|%t) - Concurrency_Strategy::activate_svc_handler, "
"opened as TAO_SERVER_ROLE\n"));
// Here the service handler has been created and the new connection
// has been accepted. #REFCOUNT# is one at this point.
if (this->ACE_Concurrency_Strategy<SVC_HANDLER>::activate_svc_handler (sh,
arg) == -1)
{
// Activation fails, decrease reference.
sh->transport ()->remove_reference ();
// #REFCOUNT# is zero at this point.
return -1;
}
// The service handler has been activated. Now cache the handler.
if (sh->add_transport_to_cache () == -1)
{
// Adding to the cache fails, close the handler.
sh->close ();
// close() doesn't really decrease reference.
sh->transport ()->remove_reference ();
// #REFCOUNT# is zero at this point.
if (TAO_debug_level > 0)
{
TAOLIB_ERROR ((LM_ERROR,
ACE_TEXT ("TAO (%P|%t) - Concurrency_Strategy::activate_svc_handler, ")
ACE_TEXT ("could not add the handler to cache\n")));
}
return -1;
}
// Registration with cache is successful, #REFCOUNT# is two at this
// point.
TAO_Server_Strategy_Factory *f = this->orb_core_->server_factory ();
int result = 0;
// Do we need to create threads?
if (f->activate_server_connections ())
{
// Thread-per-connection concurrency model
TAO_Thread_Per_Connection_Handler *tpch = 0;
ACE_NEW_RETURN (tpch,
TAO_Thread_Per_Connection_Handler (sh,
this->orb_core_),
-1);
result =
tpch->activate (f->server_connection_thread_flags (),
f->server_connection_thread_count ());
}
else
{
// Otherwise, it is the reactive concurrency model. We may want
// to register ourselves with the reactor. Call the register
// handler on the transport.
result = sh->transport ()->register_handler ();
}
if (result != -1)
{
// Activation/registration successful: the handler has been
// registered with either the Reactor or the
// Thread-per-Connection_Handler, and the Transport Cache.
// #REFCOUNT# is three at this point.
// We can let go of our reference.
sh->transport ()->remove_reference ();
}
else
{
// Activation/registration failure. #REFCOUNT# is two at this
// point.
// Remove from cache.
sh->transport ()->purge_entry ();
// #REFCOUNT# is one at this point.
// Close handler.
sh->close ();
// close() doesn't really decrease reference.
sh->transport ()->remove_reference ();
// #REFCOUNT# is zero at this point.
if (TAO_debug_level > 0)
{
const ACE_TCHAR *error_message = 0;
if (f->activate_server_connections ())
error_message = ACE_TEXT("could not activate new connection");
else
error_message = ACE_TEXT("could not register new connection in the reactor");
TAOLIB_ERROR ((LM_ERROR,
ACE_TEXT("TAO (%P|%t) - Concurrency_Strategy::activate_svc_handler, ")
ACE_TEXT("%s\n"), error_message));
}
return -1;
}
// Success: #REFCOUNT# is two at this point.
return result;
}
//////////////////////////////////////////////////////////////////////////////
template <class SVC_HANDLER, ACE_PEER_ACCEPTOR_1>
TAO_Accept_Strategy<SVC_HANDLER, ACE_PEER_ACCEPTOR_2>::TAO_Accept_Strategy (TAO_ORB_Core *orb_core)
: ACCEPT_STRATEGY_BASE (orb_core->reactor ())
, orb_core_ (orb_core)
{
}
template <class SVC_HANDLER, ACE_PEER_ACCEPTOR_1> int
TAO_Accept_Strategy<SVC_HANDLER, ACE_PEER_ACCEPTOR_2>::open (const ACE_PEER_ACCEPTOR_ADDR &local_addr,
bool restart)
{
return ACCEPT_STRATEGY_BASE::open (local_addr, restart);
}
template <class SVC_HANDLER, ACE_PEER_ACCEPTOR_1> int
TAO_Accept_Strategy<SVC_HANDLER, ACE_PEER_ACCEPTOR_2>::accept_svc_handler (SVC_HANDLER *svc_handler)
{
int const result = ACCEPT_STRATEGY_BASE::accept_svc_handler (svc_handler);
if (result == -1)
{
svc_handler->transport ()->remove_reference ();
// #REFCOUNT# is zero at this point.
}
return result;
}
/////////////////////////////////////////////////////////////////////
TAO_END_VERSIONED_NAMESPACE_DECL
#endif /* TAO_ACCEPTOR_IMPL_CPP */
|
