code.delx.au - pulseaudio/blob - src/pulsecore/log.h

   1 #ifndef foologhfoo
   2 #define foologhfoo
   3
   4 /***
   5   This file is part of PulseAudio.
   6
   7   Copyright 2004-2006 Lennart Poettering
   8   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   9
  10   PulseAudio is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU Lesser General Public License as published
  12   by the Free Software Foundation; either version 2 of the License,
  13   or (at your option) any later version.
  14
  15   PulseAudio is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with PulseAudio; if not, write to the Free Software
  22   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  23   USA.
  24 ***/
  25
  26 #include <stdarg.h>
  27 #include <stdlib.h>
  28
  29 #include <pulsecore/macro.h>
  30 #include <pulse/gccmacro.h>
  31
  32 /* A simple logging subsystem */
  33
  34 /* Where to log to */
  35 typedef enum pa_log_target {
  36     PA_LOG_STDERR,  /* default */
  37     PA_LOG_SYSLOG,
  38     PA_LOG_USER,    /* to user specified function */
  39     PA_LOG_NULL     /* to /dev/null */
  40 } pa_log_target_t;
  41
  42 typedef enum pa_log_level {
  43     PA_LOG_ERROR  = 0,    /* Error messages */
  44     PA_LOG_WARN   = 1,    /* Warning messages */
  45     PA_LOG_NOTICE = 2,    /* Notice messages */
  46     PA_LOG_INFO   = 3,    /* Info messages */
  47     PA_LOG_DEBUG  = 4,    /* debug message */
  48     PA_LOG_LEVEL_MAX
  49 } pa_log_level_t;
  50
  51 /* Set an identification for the current daemon. Used when logging to syslog. */
  52 void pa_log_set_ident(const char *p);
  53
  54 typedef void (*pa_log_func_t)(pa_log_level_t t, const char*s);
  55
  56 /* Set another log target. If t is PA_LOG_USER you may specify a function that is called every log string */
  57 void pa_log_set_target(pa_log_target_t t, pa_log_func_t func);
  58
  59 /* Maximal log level */
  60 void pa_log_set_maximal_level(pa_log_level_t l);
  61 void pa_log_set_show_meta(pa_bool_t b);
  62 void pa_log_set_show_time(pa_bool_t b);
  63 void pa_log_set_show_backtrace(unsigned nlevels);
  64
  65 void pa_log_level_meta(
  66         pa_log_level_t level,
  67         const char*file,
  68         int line,
  69         const char *func,
  70         const char *format, ...) PA_GCC_PRINTF_ATTR(5,6);
  71 void pa_log_levelv_meta(
  72         pa_log_level_t level,
  73         const char*file,
  74         int line,
  75         const char *func,
  76         const char *format,
  77         va_list ap);
  78
  79 void pa_log_level(pa_log_level_t level, const char *format, ...) PA_GCC_PRINTF_ATTR(2,3);
  80 void pa_log_levelv(pa_log_level_t level, const char *format, va_list ap);
  81
  82 #if __STDC_VERSION__ >= 199901L
  83
  84 /* ISO varargs available */
  85
  86 #define pa_log_debug(...)  pa_log_level_meta(PA_LOG_DEBUG,  __FILE__, __LINE__, __func__, __VA_ARGS__)
  87 #define pa_log_info(...)   pa_log_level_meta(PA_LOG_INFO,   __FILE__, __LINE__, __func__, __VA_ARGS__)
  88 #define pa_log_notice(...) pa_log_level_meta(PA_LOG_NOTICE, __FILE__, __LINE__, __func__, __VA_ARGS__)
  89 #define pa_log_warn(...)   pa_log_level_meta(PA_LOG_WARN,   __FILE__, __LINE__, __func__, __VA_ARGS__)
  90 #define pa_log_error(...)  pa_log_level_meta(PA_LOG_ERROR,  __FILE__, __LINE__, __func__, __VA_ARGS__)
  91
  92 #else
  93
  94 #define LOG_FUNC(suffix, level) \
  95 PA_GCC_UNUSED static void pa_log_##suffix(const char *format, ...) { \
  96     va_list ap; \
  97     va_start(ap, format); \
  98     pa_log_levelv_meta(level, NULL, 0, NULL, format, ap); \
  99     va_end(ap); \
 100 }
 101
 102 LOG_FUNC(debug, PA_LOG_DEBUG)
 103 LOG_FUNC(info, PA_LOG_INFO)
 104 LOG_FUNC(notice, PA_LOG_NOTICE)
 105 LOG_FUNC(warn, PA_LOG_WARN)
 106 LOG_FUNC(error, PA_LOG_ERROR)
 107
 108 #endif
 109
 110 #define pa_log pa_log_error
 111
 112 #endif