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
|
/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef ERROR_H
#define ERROR_H
#include "command.h"
/* To achieve C99 printf compatibility in MinGW, gnu_printf should be
* used for __attribute__((format( ... ))), with GCC v4.4 or later
*/
#if (defined(IS_MINGW) && (((__GNUC__ << 16) + __GNUC_MINOR__) >= 0x00040004))
#define PRINTF_ATTRIBUTE_FORMAT gnu_printf
#else
#define PRINTF_ATTRIBUTE_FORMAT printf
#endif
/* logging priorities
* LOG_LVL_SILENT - turn off all output. In lieu of try + catch this can be used as a
* feeble ersatz.
* LOG_LVL_USER - user messages. Could be anything from information
* to progress messags. These messages do not represent
* incorrect or unexpected behaviour, just normal execution.
* LOG_LVL_ERROR - fatal errors, that are likely to cause program abort
* LOG_LVL_WARNING - non-fatal errors, that may be resolved later
* LOG_LVL_INFO - state information, etc.
* LOG_LVL_DEBUG - debug statements, execution trace
*/
enum log_levels
{
LOG_LVL_SILENT = -3,
LOG_LVL_OUTPUT = -2,
LOG_LVL_USER = -1,
LOG_LVL_ERROR = 0,
LOG_LVL_WARNING = 1,
LOG_LVL_INFO = 2,
LOG_LVL_DEBUG = 3
};
void log_printf(enum log_levels level, const char *file, int line,
const char *function, const char *format, ...)
__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 5, 6)));
void log_printf_lf(enum log_levels level, const char *file, int line,
const char *function, const char *format, ...)
__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 5, 6)));
int log_init(struct command_context_s *cmd_ctx);
int set_log_output(struct command_context_s *cmd_ctx, FILE *output);
int log_register_commands(struct command_context_s *cmd_ctx);
void keep_alive(void);
void kept_alive(void);
void alive_sleep(int ms);
void busy_sleep(int ms);
/* log entries can be paused and replayed roughly according to the try/catch/rethrow
* concepts in C++
*/
void log_try(void);
void log_catch(void);
void log_rethrow(void);
typedef void (*log_callback_fn)(void *priv, const char *file, unsigned line,
const char *function, const char *string);
struct log_callback {
log_callback_fn fn;
void *priv;
struct log_callback *next;
};
int log_add_callback(log_callback_fn fn, void *priv);
int log_remove_callback(log_callback_fn fn, void *priv);
char *alloc_vprintf(const char *fmt, va_list ap);
char *alloc_printf(const char *fmt, ...);
extern int debug_level;
/* Avoid fn call and building parameter list if we're not outputting the information.
* Matters on feeble CPUs for DEBUG/INFO statements that are involved frequently */
#define LOG_LEVEL_IS(FOO) ((debug_level) >= (FOO))
#define LOG_DEBUG(expr ...) \
((debug_level >= LOG_LVL_DEBUG) ? log_printf_lf (LOG_LVL_DEBUG, __FILE__, __LINE__, __FUNCTION__, expr) , 0 : 0)
#define LOG_INFO(expr ...) \
log_printf_lf (LOG_LVL_INFO, __FILE__, __LINE__, __FUNCTION__, expr)
#define LOG_INFO_N(expr ...) \
log_printf (LOG_LVL_INFO, __FILE__, __LINE__, __FUNCTION__, expr)
#define LOG_WARNING(expr ...) \
log_printf_lf (LOG_LVL_WARNING, __FILE__, __LINE__, __FUNCTION__, expr)
#define LOG_ERROR(expr ...) \
log_printf_lf (LOG_LVL_ERROR, __FILE__, __LINE__, __FUNCTION__, expr)
#define LOG_USER(expr ...) \
log_printf_lf (LOG_LVL_USER, __FILE__, __LINE__, __FUNCTION__, expr)
#define LOG_USER_N(expr ...) \
log_printf (LOG_LVL_USER, __FILE__, __LINE__, __FUNCTION__, expr)
#define LOG_OUTPUT(expr ...) \
log_printf (LOG_LVL_OUTPUT, __FILE__, __LINE__, __FUNCTION__, expr)
/* general failures
* error codes < 100
*/
#define ERROR_OK (0)
#define ERROR_INVALID_ARGUMENTS ERROR_COMMAND_SYNTAX_ERROR
#define ERROR_NO_CONFIG_FILE (-2)
#define ERROR_BUF_TOO_SMALL (-3)
/* see "Error:" log entry for meaningful message to the user. The caller should
* make no assumptions about what went wrong and try to handle the problem.
*/
#define ERROR_FAIL (-4)
#endif /* LOG_H */
|
