Fix: missing hostname context
[lttng-tools.git] / src / common / error.h
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1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
fac6795d 3 *
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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 *
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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.
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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.
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16 */
17
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18#ifndef _ERROR_H
19#define _ERROR_H
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20
21#include <errno.h>
d738ac16 22#include <stdio.h>
d05ea5da 23#include <string.h>
fac6795d 24
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25#ifndef _GNU_SOURCE
26#error "lttng-tools error.h needs _GNU_SOURCE"
27#endif
28
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29/* Stringify the expansion of a define */
30#define XSTR(d) STR(d)
31#define STR(s) #s
32
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33extern int lttng_opt_quiet;
34extern int lttng_opt_verbose;
fac6795d 35
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36#define PRINT_ERR 0x1
37#define PRINT_WARN 0x2
38#define PRINT_BUG 0x3
39#define PRINT_MSG 0x4
40#define PRINT_DBG 0x10
41#define PRINT_DBG2 0x20
42#define PRINT_DBG3 0x30
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43
44/*
75dea654 45 * Macro for printing message depending on command line option and verbosity.
fac6795d 46 */
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47#define __lttng_print(type, fmt, args...) \
48 do { \
49 if (lttng_opt_quiet == 0 && type == PRINT_MSG) { \
50 fprintf(stdout, fmt, ## args); \
51 } else if (lttng_opt_quiet == 0 && \
52 (((type & PRINT_DBG) && lttng_opt_verbose == 1) || \
53 ((type & (PRINT_DBG | PRINT_DBG2)) && \
54 lttng_opt_verbose == 2) || \
55 ((type & (PRINT_DBG | PRINT_DBG2 | PRINT_DBG3)) && \
56 lttng_opt_verbose == 3))) { \
57 fprintf(stderr, fmt, ## args); \
58 } else if (lttng_opt_quiet == 0 && (type & (PRINT_WARN))) { \
59 fprintf(stderr, fmt, ## args); \
60 } else if (type & (PRINT_ERR | PRINT_BUG)) { \
61 fprintf(stderr, fmt, ## args); \
62 } \
3ce7388b 63 } while (0);
fac6795d 64
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65#define MSG(fmt, args...) \
66 __lttng_print(PRINT_MSG, fmt "\n", ## args)
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67#define _MSG(fmt, args...) \
68 __lttng_print(PRINT_MSG, fmt, ## args)
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69#define ERR(fmt, args...) \
70 __lttng_print(PRINT_ERR, "Error: " fmt "\n", ## args)
71#define WARN(fmt, args...) \
72 __lttng_print(PRINT_WARN, "Warning: " fmt "\n", ## args)
73#define BUG(fmt, args...) \
74 __lttng_print(PRINT_BUG, "BUG: " fmt "\n", ## args)
75
76/* Three level of debug. Use -v, -vv or -vvv for the levels */
77#define DBG(fmt, args...) __lttng_print(PRINT_DBG, "DEBUG1: " fmt \
78 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
79#define DBG2(fmt, args...) __lttng_print(PRINT_DBG2, "DEBUG2: " fmt \
80 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
81#define DBG3(fmt, args...) __lttng_print(PRINT_DBG3, "DEBUG3: " fmt \
82 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
83
84#define _PERROR(fmt, args...) \
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85 __lttng_print(PRINT_ERR, "PERROR: " fmt \
86 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
75dea654 87
818d276f 88#if !defined(__linux__) || ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE))
97e19046 89
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90/*
91 * Version using XSI strerror_r.
92 */
93#define PERROR(call, args...) \
94 do { \
95 char buf[200]; \
96 strerror_r(errno, buf, sizeof(buf)); \
97 _PERROR(call ": %s", ## args, buf); \
98 } while(0);
99#else
100/*
101 * Version using GNU strerror_r, for linux with appropriate defines.
102 */
75dea654 103#define PERROR(call, args...) \
818d276f 104 do { \
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105 char *buf; \
106 char tmp[200]; \
107 buf = strerror_r(errno, tmp, sizeof(tmp)); \
108 _PERROR(call ": %s", ## args, buf); \
109 } while(0);
818d276f 110#endif
fac6795d 111
db758600 112#endif /* _ERROR_H */
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