src/lib/lttng-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 "common/macros.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 \
  17         void __lttng_ust_vtracelog_##level(const char *file, \
  18                         int line, const char *func, \
  19                         const char *fmt, va_list ap) \
  20                 __attribute__((always_inline, format(printf, 4, 0))); \
  21         \
  22         static inline \
  23         void __lttng_ust_vtracelog_##level(const char *file, \
  24                         int line, const char *func, \
  25                         const char *fmt, va_list ap) \
  26         { \
  27                 char *msg; \
  28                 const int len = vasprintf(&msg, fmt, ap); \
  29                 \
  30                 /* len does not include the final \0 */ \
  31                 if (len < 0) \
  32                         goto end; \
  33                 lttng_ust_tracepoint_cb_lttng_ust_tracelog___##level(file, \
  34                         line, func, msg, len, \
  35                         LTTNG_UST_CALLER_IP()); \
  36                 free(msg); \
  37         end: \
  38                 return; \
  39         } \
  40         \
  41         void _lttng_ust_vtracelog_##level(const char *file, \
  42                         int line, const char *func, \
  43                         const char *fmt, va_list ap) \
  44                 __attribute__ ((format(printf, 4, 0))); \
  45         \
  46         void _lttng_ust_vtracelog_##level(const char *file, \
  47                         int line, const char *func, \
  48                         const char *fmt, va_list ap); \
  49         void _lttng_ust_vtracelog_##level(const char *file, \
  50                         int line, const char *func, \
  51                         const char *fmt, va_list ap) \
  52         { \
  53                 __lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
  54         } \
  55         \
  56         void _lttng_ust_tracelog_##level(const char *file, \
  57                         int line, const char *func, \
  58                         const char *fmt, ...) \
  59                 __attribute__ ((format(printf, 4, 5))); \
  60         \
  61         void _lttng_ust_tracelog_##level(const char *file, \
  62                         int line, const char *func, \
  63                         const char *fmt, ...); \
  64         void _lttng_ust_tracelog_##level(const char *file, \
  65                         int line, const char *func, \
  66                         const char *fmt, ...) \
  67         { \
  68                 va_list ap; \
  69                 \
  70                 va_start(ap, fmt); \
  71                 __lttng_ust_vtracelog_##level(file, line, func, fmt, ap); \
  72                 va_end(ap); \
  73         }
  74
  75 TRACELOG_CB(TRACE_EMERG)
  76 TRACELOG_CB(TRACE_ALERT)
  77 TRACELOG_CB(TRACE_CRIT)
  78 TRACELOG_CB(TRACE_ERR)
  79 TRACELOG_CB(TRACE_WARNING)
  80 TRACELOG_CB(TRACE_NOTICE)
  81 TRACELOG_CB(TRACE_INFO)
  82 TRACELOG_CB(TRACE_DEBUG_SYSTEM)
  83 TRACELOG_CB(TRACE_DEBUG_PROGRAM)
  84 TRACELOG_CB(TRACE_DEBUG_PROCESS)
  85 TRACELOG_CB(TRACE_DEBUG_MODULE)
  86 TRACELOG_CB(TRACE_DEBUG_UNIT)
  87 TRACELOG_CB(TRACE_DEBUG_FUNCTION)
  88 TRACELOG_CB(TRACE_DEBUG_LINE)
  89 TRACELOG_CB(TRACE_DEBUG)