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; either version 2
   7  * of the License, or (at your option) any later version.
   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 enum __lttng_print_type {
  33         PRINT_ERR,
  34         PRINT_WARN,
  35         PRINT_BUG,
  36         PRINT_DBG,
  37         PRINT_MSG,
  38 };
  39
  40 /*
  41  *  __lttng_print
  42  *
  43  *  Macro for printing message depending on
  44  *  command line option and verbosity.
  45  */
  46 #define __lttng_print(type, fmt, args...)       \
  47         do {                                                    \
  48                 if (opt_quiet == 0) {           \
  49                         if (type == PRINT_MSG || (opt_verbose && type == PRINT_DBG)) {  \
  50                                 fprintf(stdout, fmt, ## args);  \
  51                         } else if (type != PRINT_MSG && type != PRINT_DBG) {    \
  52                                 fprintf(stderr, fmt, ## args);          \
  53                         }       \
  54                 }       \
  55         } while (0);
  56
  57 #define MSG(fmt, args...) __lttng_print(PRINT_MSG, fmt "\n", ## args)
  58 #define ERR(fmt, args...) __lttng_print(PRINT_ERR, "Error: " fmt "\n", ## args)
  59 #define WARN(fmt, args...) __lttng_print(PRINT_WARN, "Warning: " fmt "\n", ## args)
  60 #define BUG(fmt, args...) __lttng_print(PRINT_BUG, "BUG: " fmt "\n", ## args)
  61 #define DBG(fmt, args...) __lttng_print(PRINT_DBG, "DEBUG: " fmt " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
  62
  63 #endif /* _LTTNGERR_H */