services/logger.h

   1 /* Quarn OS
   2  *
   3  * Logger
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 /* Abstract interface of loggers. They are an objects that inform user about
  24  * situations that happened. They decide if a message is worth showing it on
  25  * the main data output (for example screen) or if it is better to save it to
  26  * a file. They are the main way for kernel to communicate with the user.
  27  */
  28
  29 #ifndef _LOGGER_H_
  30 #define _LOGGER_H_
  31
  32 #include "libs/string.h"
  33
  34 #include "manes/cds/component.h"
  35
  36 namespace services {
  37         class logger : public manes::cds::component {
  38         public:
  39                 typedef enum {
  40                         log_critical,
  41                         log_failure,
  42                         log_error,
  43                         log_warning,
  44                         log_alert,
  45                         log_info,
  46                         log_debug
  47                 } log_level;
  48
  49                 virtual void print(const string&, log_level) = 0;
  50         };
  51 }
  52
  53 #endif