src/libs/misc/trace.h

   1 //
   2 // Copyright (C) 2008 Francesco Salvestrini
   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 as published by
   6 // the Free Software Foundation; either version 2 of the License, or
   7 // (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 along
  15 // with this program; if not, write to the Free Software Foundation, Inc.,
  16 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17 //
  18
  19 #ifndef LIBS_MISC_TRACES_H
  20 #define LIBS_MISC_TRACES_H
  21
  22 #include <cstdio>
  23
  24 //
  25 // NOTE:
  26 //     This tracing interface is really awful. It will be replaced ASAP.
  27 //
  28
  29 extern int     trace_level;
  30 extern char *  trace_prefix;
  31
  32 // Trace levels
  33 #define TR_LVL_CRITICAL 5
  34 #define TR_LVL_ERROR    4
  35 #define TR_LVL_WARNING  3
  36 #define TR_LVL_NOTICE   2
  37 #define TR_LVL_VERBOSE  1
  38 #define TR_LVL_DEBUG    0
  39
  40 #define TR_LVL_DEFAULT TR_LVL_NOTICE
  41
  42 #define _TRACE(LVL,FMT,ARGS...) {                                          \
  43         if ((LVL) >= trace_level) {                                        \
  44                 if (trace_prefix) {                                        \
  45                         fprintf(stdout, "%s: " FMT, trace_prefix, ##ARGS); \
  46                 } else {                                                   \
  47                         fprintf(stdout, FMT, ##ARGS);                      \
  48                 }                                                          \
  49         }                                                                  \
  50 }
  51
  52 // Shortcuts for configuration
  53 #define TR_CONFIG_LVL(LVL)  { trace_level  = LVL; }
  54 #define TR_CONFIG_PFX(PFX)  { trace_prefix = PFX; }
  55
  56 // Shortcuts for traces
  57 #define TR_DBG(FMT,ARGS...) _TRACE(TR_LVL_DEBUG,    FMT, ##ARGS);
  58 #define TR_VRB(FMT,ARGS...) _TRACE(TR_LVL_VERBOSE,  FMT, ##ARGS);
  59 #define TR_WRN(FMT,ARGS...) _TRACE(TR_LVL_WARNING,  FMT, ##ARGS);
  60 #define TR_ERR(FMT,ARGS...) _TRACE(TR_LVL_ERROR,    FMT, ##ARGS);
  61 #define TR_CRT(FMT,ARGS...) _TRACE(TR_LVL_CRITICAL, FMT, ##ARGS);
  62
  63 #endif // LIBS_MISC_TRACES_H