src/common/log.h

   1 /* Copyright 2001,2002,2003 Roger Dingledine, Matej Pfajfar. */
   2 /* See LICENSE for licensing information */
   3 /* $Id$ */
   4
   5 #ifndef __LOG_H
   6
   7 #ifdef HAVE_SYSLOG_H
   8 #include <syslog.h>
   9 #define LOG_WARN LOG_WARNING
  10 #else
  11 #define LOG_DEBUG   0
  12 #define LOG_INFO    1
  13 #define LOG_WARN    3
  14 #define LOG_ERR     4
  15 #endif
  16
  17 /* magic to make GCC check for proper format strings. */
  18 #ifdef __GNUC__
  19 #define CHECK_PRINTF(formatIdx, firstArg) \
  20    __attribute__ ((format (printf, formatIdx, firstArg)))
  21 #else
  22 #define CHECK_PRINTF(formatIdx, firstArg)
  23 #endif
  24
  25 void add_stream_log(int loglevel, const char *name, FILE *stream);
  26 int add_file_log(int severity, const char *filename);
  27 void close_logs();
  28 void reset_logs();
  29
  30 /* Outputs a message to stdout */
  31 void _log(int severity, const char *format, ...) CHECK_PRINTF(2,3);
  32
  33 #ifdef __GNUC__
  34 void _log_fn(int severity, const char *funcname, const char *format, ...)
  35      CHECK_PRINTF(3,4);
  36 #define log_fn(severity, args...) \
  37   _log_fn(severity, __PRETTY_FUNCTION__, args)
  38 #else
  39 #define log_fn _log
  40 #endif
  41 #define log _log /* hack it so we don't conflict with log() as much */
  42
  43 # define __LOG_H
  44 #endif