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
|
/*
* This is one of the log4c example programs.
*
* In this example we link against a shared library that has
* additional formatters and appenders. This shows how easy it is to
* add in more appenders and formatters to the log4c framework.
*
* With gcc this file is in fact exactly the same as application_1.c--
* only at link time it is linked with a new library.
* With other compilers using explicit initialization, this program needs
* to explicitly tell the custom appender/formatter lib to initialize
* itself and it's appenders and formatters.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifndef _WIN32
#include <sys/time.h>
#else
#include <time.h>
#include <windows.h>
#include <winsock.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "log4c.h"
extern int init_examples_lib(void);
#ifdef _WIN32
#if !defined(__MINGW32__) && !defined(__MINGW64__)
int gettimeofday(struct timeval* tp, void* tzp) {
DWORD t;
t = timeGetTime();
tp->tv_sec = t / 1000;
tp->tv_usec = t % 1000;
/* 0 indicates that the call succeeded. */
return 0;
}
#endif
#if !defined(HAVE_SLEEP) || !HAVE_DECL_SLEEP
#define sleep(x) Sleep(x*1000)
#endif
#endif /* _WIN32 */
int main(int argc, char** argv)
{
struct timeval start_time;
struct timeval now_time;
int looptime = 0;
log4c_category_t* mycat = NULL;
if (argc < 2)
{
printf("usage: %s loop_time_in_seconds\n",argv[0]);
exit (1);
}
if (sscanf(argv[1],"%d",&looptime) != 1)
{
printf("could not convert %s to number of seconds to loop\n",argv[1]);
exit(1);
}
/*
* Here, if using explicit initialization (as opposed to implicit via the
* init phase of the library) it's important to initialize the custom appenders
* and layouts before calling log4c_init().
* This is because when log4c_init() parses the config file it looks for the
* types mentioned in the file to set up the relations between categories,
* appenders and layouts. If it does not find a coresponding type in the
* internal hash tables, it creates one with that type name, but the function
* table is not set up--so that at log time nothing happens.
*
*/
init_examples_lib();
log4c_init();
/*
* You could choose to wrap the log4c_category_log with some macro
* that then calls an accessor to get your pre-created category
* mycat and then logs to it. But for now we just focus on the fact
* that we are using log4crc to have this application use the new
* formatters and appenders we wrote as examples
*/
mycat = log4c_category_get("six13log.log.app.application2");
gettimeofday(&start_time, NULL);
gettimeofday(&now_time, NULL);
while ( (now_time.tv_sec - start_time.tv_sec) < looptime)
{
log4c_category_log(mycat, LOG4C_PRIORITY_DEBUG, "Debugging app 2");
log4c_category_log(mycat, LOG4C_PRIORITY_ERROR,
"some error from app2 at line %d in file %s",
__LINE__, __FILE__);
sleep(3);
gettimeofday(&now_time, NULL);
}
/* Explicitly call the log4c cleanup routine */
if ( log4c_fini()){
printf("log4c_fini() failed");
}
return 0;
}
|
