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
|
//=============================================================================
/**
* @file test_callback.cpp
*
* $Id: test_callback.cpp 93639 2011-03-24 13:32:13Z johnnyw $
*
* This program tests the <ACE_Log_Msg> class wrt writing to user
* defined callback objects. In particular, it tests to make sure
* that nested callbacks don't deadlock.
*
*
* @author Irfan Pyarali <irfan@cs.wustl.edu>
*/
//=============================================================================
#include "ace/OS_main.h"
#include "ace/Log_Msg.h"
#include "ace/Log_Msg_Callback.h"
#include "ace/Log_Record.h"
#include "ace/OS_NS_stdio.h"
/**
* @class Logger
Subclassing from ACE_Log_Msg_Callback means that an instance of
* Logger can be a target of a callback.
*/
class Logger : public ACE_Log_Msg_Callback
{
public:
// Constructor sets whether we're testing "recursive" callback
// logging!
Logger (int be_recursive = 1);
/// Logging callback hook.
virtual void log (ACE_Log_Record &log_record);
void verbose (int be_verbose);
private:
/// Flag for testing verbose logging.
int verbose_logging_;
/// Flag for testing recursive callback logging.
int recursive_;
};
void
Logger::verbose (int be_verbose)
{
this->verbose_logging_ = be_verbose;
}
Logger::Logger (int be_recursive)
: recursive_ (be_recursive)
{
}
void
Logger::log (ACE_Log_Record &log_record)
{
int use_log_msg = 0;
if (this->recursive_)
{
this->recursive_ = 0;
use_log_msg = 1;
}
if (!this->verbose_logging_)
{
if (use_log_msg)
ACE_DEBUG ((LM_DEBUG,
"Logger::log->%s",
log_record.msg_data ()));
else
ACE_OS::printf ("Recursive Logger callback = %s",
ACE_TEXT_ALWAYS_CHAR (log_record.msg_data ()));
}
else
{
ACE_TCHAR verbose_msg[ACE_Log_Record::MAXVERBOSELOGMSGLEN];
int result = log_record.format_msg (ACE_LOG_MSG->local_host (),
ACE_LOG_MSG->flags (),
verbose_msg);
if (result == 0)
{
if (use_log_msg)
ACE_DEBUG ((LM_DEBUG,
"Logger::log->%s",
verbose_msg));
else
ACE_OS::printf ("Recursive Logger callback = %s",
ACE_TEXT_ALWAYS_CHAR (verbose_msg));
}
}
// Cleanup on the way out.
if (use_log_msg)
this->recursive_ = 1;
}
int
ACE_TMAIN (int, ACE_TCHAR *[])
{
// This message should show up in stderr.
ACE_DEBUG ((LM_DEBUG,
"(%t) first message\n"));
ACE_LOG_MSG->clr_flags (ACE_Log_Msg::STDERR);
// This message should not show up anywhere since we disabled STDERR.
ACE_DEBUG ((LM_DEBUG,
"(%t) second message\n"));
ACE_LOG_MSG->set_flags (ACE_Log_Msg::MSG_CALLBACK);
// This message should not show up anywhere since no callback object
// has been specified.
ACE_DEBUG ((LM_DEBUG,
"(%t) third message\n"));
// Create a callback object and make it "verbose".
Logger logger;
logger.verbose (1);
// Set the callback object.
ACE_LOG_MSG->msg_callback (&logger);
// This message should show up via the Logger callback.
ACE_DEBUG ((LM_DEBUG,
"(%t) fourth message\n"));
ACE_LOG_MSG->set_flags (ACE_Log_Msg::VERBOSE_LITE);
// This message should show up via the Logger callback (somewhat
// verbosely).
ACE_DEBUG ((LM_DEBUG,
"(%t) fifth message\n"));
ACE_LOG_MSG->set_flags (ACE_Log_Msg::VERBOSE);
// This message should show up via the Logger callback (really
// verbosely).
ACE_DEBUG ((LM_DEBUG,
"(%t) sixth message\n"));
logger.verbose (0);
// This message should show up via the Logger callback (not
// verbosely).
ACE_DEBUG ((LM_DEBUG,
"(%t) seventh message\n"));
ACE_LOG_MSG->set_flags (ACE_Log_Msg::STDERR);
// This message should show up in stderr and the Logger callback.
// The one from the Logger callback will not be verbose, but the one
// from stderr should be verbose.
ACE_DEBUG ((LM_DEBUG,
"(%t) eighth message\n"));
return 0;
}
|
