Add lttng-error.h containing every API err. code
[lttng-tools.git] / src / common / error.h
1 /*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18 #ifndef _ERROR_H
19 #define _ERROR_H
20
21 #include <errno.h>
22 #include <stdio.h>
23 #include <stdint.h>
24 #include <string.h>
25
26 #ifndef _GNU_SOURCE
27 #error "lttng-tools error.h needs _GNU_SOURCE"
28 #endif
29
30 #include <lttng/lttng-error.h>
31
32 /* Stringify the expansion of a define */
33 #define XSTR(d) STR(d)
34 #define STR(s) #s
35
36 extern int lttng_opt_quiet;
37 extern int lttng_opt_verbose;
38
39 #define PRINT_ERR 0x1
40 #define PRINT_WARN 0x2
41 #define PRINT_BUG 0x3
42 #define PRINT_MSG 0x4
43 #define PRINT_DBG 0x10
44 #define PRINT_DBG2 0x20
45 #define PRINT_DBG3 0x30
46
47 /*
48 * Macro for printing message depending on command line option and verbosity.
49 */
50 #define __lttng_print(type, fmt, args...) \
51 do { \
52 if (lttng_opt_quiet == 0 && type == PRINT_MSG) { \
53 fprintf(stdout, fmt, ## args); \
54 } else if (lttng_opt_quiet == 0 && \
55 (((type & PRINT_DBG) && lttng_opt_verbose == 1) || \
56 ((type & (PRINT_DBG | PRINT_DBG2)) && \
57 lttng_opt_verbose == 2) || \
58 ((type & (PRINT_DBG | PRINT_DBG2 | PRINT_DBG3)) && \
59 lttng_opt_verbose == 3))) { \
60 fprintf(stderr, fmt, ## args); \
61 } else if (lttng_opt_quiet == 0 && (type & (PRINT_WARN))) { \
62 fprintf(stderr, fmt, ## args); \
63 } else if (type & (PRINT_ERR | PRINT_BUG)) { \
64 fprintf(stderr, fmt, ## args); \
65 } \
66 } while (0);
67
68 #define MSG(fmt, args...) \
69 __lttng_print(PRINT_MSG, fmt "\n", ## args)
70 #define _MSG(fmt, args...) \
71 __lttng_print(PRINT_MSG, fmt, ## args)
72 #define ERR(fmt, args...) \
73 __lttng_print(PRINT_ERR, "Error: " fmt "\n", ## args)
74 #define WARN(fmt, args...) \
75 __lttng_print(PRINT_WARN, "Warning: " fmt "\n", ## args)
76 #define BUG(fmt, args...) \
77 __lttng_print(PRINT_BUG, "BUG: " fmt "\n", ## args)
78
79 /* Three level of debug. Use -v, -vv or -vvv for the levels */
80 #define DBG(fmt, args...) __lttng_print(PRINT_DBG, "DEBUG1: " fmt \
81 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
82 #define DBG2(fmt, args...) __lttng_print(PRINT_DBG2, "DEBUG2: " fmt \
83 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
84 #define DBG3(fmt, args...) __lttng_print(PRINT_DBG3, "DEBUG3: " fmt \
85 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
86
87 #define _PERROR(fmt, args...) \
88 __lttng_print(PRINT_ERR, "PERROR: " fmt \
89 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
90
91 #if !defined(__linux__) || ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE))
92
93 /*
94 * Version using XSI strerror_r.
95 */
96 #define PERROR(call, args...) \
97 do { \
98 char buf[200]; \
99 strerror_r(errno, buf, sizeof(buf)); \
100 _PERROR(call ": %s", ## args, buf); \
101 } while(0);
102 #else
103 /*
104 * Version using GNU strerror_r, for linux with appropriate defines.
105 */
106 #define PERROR(call, args...) \
107 do { \
108 char *buf; \
109 char tmp[200]; \
110 buf = strerror_r(errno, tmp, sizeof(tmp)); \
111 _PERROR(call ": %s", ## args, buf); \
112 } while(0);
113 #endif
114
115 const char *error_get_str(int32_t code);
116
117 #endif /* _ERROR_H */
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