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 /* The tracepoint definition is public, but the provider definition is hidden. */
  12 #define LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION
  13
  14 #define LTTNG_UST_TRACEPOINT_CREATE_PROBES
  15 #define LTTNG_UST_TRACEPOINT_DEFINE
  16 #include "lttng-ust-tracelog-provider.h"
  17
  18 #define LTTNG_UST_TRACELOG_CB(level) \
  19         static inline \
  20         void lttng_ust___vtracelog_##level(const char *file, \
  21                         int line, const char *func, \
  22                         const char *fmt, va_list ap) \
  23                 __attribute__((always_inline, format(printf, 4, 0))); \
  24         \
  25         static inline \
  26         void lttng_ust___vtracelog_##level(const char *file, \
  27                         int line, const char *func, \
  28                         const char *fmt, va_list ap) \
  29         { \
  30                 char *msg; \
  31                 const int len = vasprintf(&msg, fmt, ap); \
  32                 \
  33                 /* len does not include the final \0 */ \
  34                 if (len < 0) \
  35                         goto end; \
  36                 lttng_ust_tracepoint_cb_lttng_ust_tracelog___##level(file, \
  37                         line, func, msg, len, \
  38                         LTTNG_UST_CALLER_IP()); \
  39                 free(msg); \
  40         end: \
  41                 return; \
  42         } \
  43         \
  44         void lttng_ust__vtracelog_##level(const char *file, \
  45                         int line, const char *func, \
  46                         const char *fmt, va_list ap) \
  47                 __attribute__ ((format(printf, 4, 0))); \
  48         \
  49         void lttng_ust__vtracelog_##level(const char *file, \
  50                         int line, const char *func, \
  51                         const char *fmt, va_list ap); \
  52         void lttng_ust__vtracelog_##level(const char *file, \
  53                         int line, const char *func, \
  54                         const char *fmt, va_list ap) \
  55         { \
  56                 lttng_ust___vtracelog_##level(file, line, func, fmt, ap); \
  57         } \
  58         \
  59         void lttng_ust__tracelog_##level(const char *file, \
  60                         int line, const char *func, \
  61                         const char *fmt, ...) \
  62                 __attribute__ ((format(printf, 4, 5))); \
  63         \
  64         void lttng_ust__tracelog_##level(const char *file, \
  65                         int line, const char *func, \
  66                         const char *fmt, ...); \
  67         void lttng_ust__tracelog_##level(const char *file, \
  68                         int line, const char *func, \
  69                         const char *fmt, ...) \
  70         { \
  71                 va_list ap; \
  72                 \
  73                 va_start(ap, fmt); \
  74                 lttng_ust___vtracelog_##level(file, line, func, fmt, ap); \
  75                 va_end(ap); \
  76         }
  77
  78 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_EMERG)
  79 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_ALERT)
  80 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_CRIT)
  81 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_ERR)
  82 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_WARNING)
  83 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_NOTICE)
  84 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_INFO)
  85 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_SYSTEM)
  86 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROGRAM)
  87 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_PROCESS)
  88 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_MODULE)
  89 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_UNIT)
  90 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_FUNCTION)
  91 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG_LINE)
  92 LTTNG_UST_TRACELOG_CB(LTTNG_UST_TRACEPOINT_LOGLEVEL_DEBUG)