liblttng-ust/tracelog.c

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (C) 2013-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  */
   6
   7 #define _LGPL_SOURCE
   8 #include <stdio.h>
   9 #include <ust-helper.h>
  10
  11 #define TRACEPOINT_CREATE_PROBES
  12 #define TRACEPOINT_DEFINE
  13 #include "lttng-ust-tracelog-provider.h"
  14
  15 #define TRACELOG_CB(level) \
  16         static inline __attribute__((always_inline, format(printf, 4, 0))) \
  17         void __lttng_ust_vtracelog_##level(const char *file, \
  18                         int line, const char *func, \
  19                         const char *fmt, va_list ap) \
  20         { \
  21                 char *msg; \
  22                 const int len = vasprintf(&msg, fmt, ap); \
  23                 \
  24                 /* len does not include the final \0 */ \
  25                 if (len < 0) \
  26                         goto end; \
  27                 __tracepoint_cb_lttng_ust_tracelog___##level(file, \
  28                         line, func, msg, len, \
  29                         LTTNG_UST_CALLER_IP()); \
  30                 free(msg); \
  31         end: \
  32                 return; \
  33         } \
  34         \
  35         __attribute__ ((format(printf, 4, 0))) \
  36         void _lttng_ust_vtracelog_##level(const char *file, \
  37                         int line, const char *func, \
  38                         const char *fmt, va_list ap) \
  39         { \
  40                 __lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
  41         } \
  42         \
  43         __attribute__ ((format(printf, 4, 5))) \
  44         void _lttng_ust_tracelog_##level(const char *file, \
  45                         int line, const char *func, \
  46                         const char *fmt, ...) \
  47         { \
  48                 va_list ap; \
  49                 \
  50                 va_start(ap, fmt); \
  51                 __lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
  52                 va_end(ap); \
  53         }
  54
  55 TRACELOG_CB(TRACE_EMERG)
  56 TRACELOG_CB(TRACE_ALERT)
  57 TRACELOG_CB(TRACE_CRIT)
  58 TRACELOG_CB(TRACE_ERR)
  59 TRACELOG_CB(TRACE_WARNING)
  60 TRACELOG_CB(TRACE_NOTICE)
  61 TRACELOG_CB(TRACE_INFO)
  62 TRACELOG_CB(TRACE_DEBUG_SYSTEM)
  63 TRACELOG_CB(TRACE_DEBUG_PROGRAM)
  64 TRACELOG_CB(TRACE_DEBUG_PROCESS)
  65 TRACELOG_CB(TRACE_DEBUG_MODULE)
  66 TRACELOG_CB(TRACE_DEBUG_UNIT)
  67 TRACELOG_CB(TRACE_DEBUG_FUNCTION)
  68 TRACELOG_CB(TRACE_DEBUG_LINE)
  69 TRACELOG_CB(TRACE_DEBUG)