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
|
// $Id$
#include "Event_Comm_i.h"
#include "Notifier_Handler.h"
#include "Supplier_Input_Handler.h"
ACE_RCSID(Supplier, Supplier_Input_Handler, "$Id$")
Supplier_Input_Handler::Supplier_Input_Handler ()
: notifier_ (0),
handle_ (0)
{
// No-Op.
}
Supplier_Input_Handler::~Supplier_Input_Handler (void)
{
ACE_DEBUG ((LM_DEBUG,
"closing down Supplier_Input_Handler::~Supplier_Input_Handler\n"));
}
int
Supplier_Input_Handler::handle_close (ACE_HANDLE, ACE_Reactor_Mask)
{
ACE_DEBUG ((LM_DEBUG,
"closing down Supplier::Supplier_Input_Handler\n"));
Event_Comm::Notifier *notifier = this->notifier_->notifier ();
ACE_ASSERT (notifier != 0);
ACE_OS::fclose (this->fp_);
TAO_TRY
{
// Disconnect all the consumers gracefully.
notifier->disconnect ("quit", TAO_TRY_ENV);
TAO_CHECK_ENV;
}
TAO_CATCHANY
{
TAO_TRY_ENV.print_exception ("Error:Supplier_Input_Handler::handle_close\n ");
}
TAO_ENDTRY;
// Don't execute a callback here otherwise we'll recurse
// indefinitely!
if (ACE_Reactor::instance ()->remove_handler
(this,
ACE_Event_Handler::READ_MASK | ACE_Event_Handler::DONT_CALL) == -1)
ACE_ERROR ((LM_ERROR,
"%p\n",
"remove_handler"));
return 0;
}
int Supplier_Input_Handler::initialize (Notifier_Handler *notifier,
ACE_HANDLE handle) // Use stdin by default.
{
notifier_ = notifier;
handle_ = handle;
// Register ourselves with the ACE_Reactor so that input events
// cause our handle_input() method to be dispatched automatically.
if (ACE_Reactor::instance ()->register_handler
(this, ACE_Event_Handler::READ_MASK) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"register_handler"), -1);
this->fp_ = ACE_OS::fdopen (handle, "r");
if (this->fp_ == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"fdopen"), -1);
return 0;
}
ACE_HANDLE
Supplier_Input_Handler::get_handle (void) const
{
return this->handle_;
}
// Frame input events and notify <Consumers>.
int
Supplier_Input_Handler::handle_input (ACE_HANDLE h)
{
char buf[BUFSIZ];
// Read up to BUFSIZ worth of data from ACE_HANDLE h.
if (ACE_OS::fgets (buf, sizeof buf - 1, this->fp_) == 0)
{
ACE_OS::strcpy (buf, "quit");
ACE_DEBUG ((LM_DEBUG,
"shutting down Supplier_Input_Handler\n"));
}
else
{
size_t n = ACE_OS::strlen (buf);
// Null terminate the buffer, replacing the '\n' with '\0'.
if (buf[n - 1] == '\n' || buf[n - 1] == EOF)
buf[n - 1] = '\0';
else
buf[n] = '\0';
ACE_DEBUG ((LM_DEBUG, "notifying for event %s\n", buf));
}
Event_Comm::Notifier *notifier = this->notifier_->notifier ();
ACE_ASSERT (notifier != 0);
if (ACE_OS::strcmp (buf, "quit") == 0)
// Tell the main event loop to shutdown.
ACE_Reactor::end_event_loop();
else
{
// Use the notifier to notify Consumers.
TAO_TRY
{
Event_Comm::Event event;
// Pass the buf over in the tag field.
event.tag_ = ACE_OS::strdup (buf);
// This is where the "any" value goes or the object
// reference... event.value_ = ...
// Forward <Event> to all <Consumers>.
notifier->push (event, TAO_TRY_ENV);
TAO_CHECK_ENV;
}
TAO_CATCHANY
{
TAO_TRY_ENV.print_exception ("Unexpected Error\n");
}
TAO_ENDTRY;
}
return 0;
}
|
