log.h

   1 /*****************************************************************************
   2   Copyright (c) 2006 EMC Corporation.
   3
   4   This program is free software; you can redistribute it and/or modify it
   5   under the terms of the GNU General Public License as published by the Free
   6   Software Foundation; either version 2 of the License, or (at your option)
   7   any later version.
   8
   9   This program is distributed in the hope that it will be useful, but WITHOUT
  10   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12   more details.
  13
  14   You should have received a copy of the GNU General Public License along with
  15   this program; if not, write to the Free Software Foundation, Inc., 59
  16   Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17
  18   The full GNU General Public License is included in this distribution in the
  19   file called LICENSE.
  20
  21   Authors: Srinivas Aji <Aji_Srinivas@emc.com>
  22
  23 ******************************************************************************/
  24
  25 #ifndef LOG_H
  26 #define LOG_H
  27
  28 #include <stdio.h>
  29 #include <stdarg.h>
  30
  31 #define LOG_LEVEL_NONE 0
  32 #define LOG_LEVEL_ERROR 1
  33 #define LOG_LEVEL_INFO  2
  34 #define LOG_LEVEL_DEBUG 3
  35 #define LOG_LEVEL_RSTPLIB 4
  36 #define LOG_LEVEL_MAX 100
  37
  38 #define LOG_LEVEL_DEFAULT LOG_LEVEL_INFO
  39
  40 extern void Dprintf(int level, const char *fmt, ...);
  41 extern void vDprintf(int level, const char *fmt, va_list ap);
  42 extern int log_level;
  43
  44 #define PRINT(_level, _fmt, _args...) Dprintf(_level, _fmt, ##_args)
  45
  46 #define TSTM(x,y, _fmt, _args...)                                               \
  47         do if (!(x)) {                                                          \
  48                         PRINT(LOG_LEVEL_ERROR,                                  \
  49                                 "Error in %s at %s:%d verifying %s. " _fmt,     \
  50                                 __PRETTY_FUNCTION__, __FILE__, __LINE__,        \
  51                                 #x, ##_args);                                   \
  52                         return y;                                               \
  53        } while (0)
  54
  55 #define TST(x,y) TSTM(x,y,"")
  56
  57 #define LOG(_fmt, _args...) \
  58         PRINT(LOG_LEVEL_DEBUG, "%s: " _fmt, __PRETTY_FUNCTION__, ##_args)
  59
  60 #define INFO(_fmt, _args...) \
  61         PRINT(LOG_LEVEL_INFO, "%s: " _fmt, __PRETTY_FUNCTION__, ##_args)
  62
  63 #define ERROR(_fmt, _args...) \
  64         PRINT(LOG_LEVEL_ERROR, "error, %s: " _fmt, __PRETTY_FUNCTION__, ##_args)
  65
  66 static inline void dump_hex(void *b, int l)
  67 {
  68         unsigned char *buf = b;
  69         char logbuf[80];
  70         int i, j;
  71         for (i = 0; i < l; i += 16) {
  72                 for (j = 0; j < 16 && i + j < l; j++)
  73                         sprintf(logbuf + j * 3, " %02x", buf[i + j]);
  74                 PRINT(LOG_LEVEL_INFO, "%s", logbuf);
  75         }
  76         PRINT(LOG_LEVEL_INFO, "\n");
  77 }
  78
  79 #endif