include/lttngerr.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
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; only version 2
   7  * of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  */
  18
  19 #ifndef _LTTNGERR_H
  20 #define _LTTNGERR_H
  21
  22 #include <errno.h>
  23 #include <stdio.h>
  24
  25 /* Stringify the expansion of a define */
  26 #define XSTR(d) STR(d)
  27 #define STR(s) #s
  28
  29 extern int opt_quiet;
  30 extern int opt_verbose;
  31
  32 #define PRINT_ERR   0x1
  33 #define PRINT_WARN  0x2
  34 #define PRINT_BUG   0x3
  35 #define PRINT_MSG   0x4
  36 #define PRINT_DBG   0x10
  37 #define PRINT_DBG2  0x20
  38 #define PRINT_DBG3  0x30
  39
  40 /*
  41  * Macro for printing message depending on command line option and verbosity.
  42  */
  43 #define __lttng_print(type, fmt, args...)                                 \
  44         do {                                                                  \
  45                 if (opt_quiet == 0) {                                             \
  46                         if (type == PRINT_MSG ||                                      \
  47                                         ((type & PRINT_DBG) && opt_verbose == 1) ||           \
  48                                         ((type & (PRINT_DBG | PRINT_DBG2)) &&                 \
  49                                                 opt_verbose == 2) ||                              \
  50                                         ((type & (PRINT_DBG | PRINT_DBG2 | PRINT_DBG3)) &&    \
  51                                                 opt_verbose == 3)) {                              \
  52                                 fprintf(stderr, fmt, ## args);                            \
  53                         } else if (type & (PRINT_ERR | PRINT_WARN | PRINT_BUG)) {     \
  54                                 fprintf(stderr, fmt, ## args);                            \
  55                         }                                                             \
  56                 }                                                                 \
  57         } while (0);
  58
  59 #define MSG(fmt, args...) \
  60         __lttng_print(PRINT_MSG, fmt "\n", ## args)
  61 #define ERR(fmt, args...) \
  62         __lttng_print(PRINT_ERR, "Error: " fmt "\n", ## args)
  63 #define WARN(fmt, args...) \
  64         __lttng_print(PRINT_WARN, "Warning: " fmt "\n", ## args)
  65 #define BUG(fmt, args...) \
  66         __lttng_print(PRINT_BUG, "BUG: " fmt "\n", ## args)
  67
  68 /* Three level of debug. Use -v, -vv or -vvv for the levels */
  69 #define DBG(fmt, args...) __lttng_print(PRINT_DBG, "DEBUG1: " fmt \
  70                 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
  71 #define DBG2(fmt, args...) __lttng_print(PRINT_DBG2, "DEBUG2: " fmt \
  72                 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
  73 #define DBG3(fmt, args...) __lttng_print(PRINT_DBG3, "DEBUG3: " fmt \
  74                 " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
  75
  76 #define _PERROR(fmt, args...) \
  77         __lttng_print(PRINT_ERR, "perror " fmt "\n", ## args)
  78
  79 #define PERROR(call, args...) \
  80     do { \
  81                 char *buf; \
  82                 char tmp[200]; \
  83                 buf = strerror_r(errno, tmp, sizeof(tmp)); \
  84                 _PERROR(call ": %s", ## args, buf); \
  85         } while(0);
  86
  87 #endif /* _LTTNGERR_H */