liblttng-ust/tracelog.c

   1 /*
   2  * Copyright (C) 2013-2014  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #define _GNU_SOURCE
  24 #define _LGPL_SOURCE
  25 #include <stdio.h>
  26 #include <helper.h>
  27
  28 #define TRACEPOINT_CREATE_PROBES
  29 #define TRACEPOINT_DEFINE
  30 #include "lttng-ust-tracelog-provider.h"
  31
  32 #define TRACELOG_CB(level) \
  33         void _lttng_ust_tracelog_##level(const char *file, \
  34                         int line, const char *func, \
  35                         const char *fmt, ...) \
  36         { \
  37                 va_list ap; \
  38                 char *msg; \
  39                 int len; \
  40                 \
  41                 va_start(ap, fmt); \
  42                 len = vasprintf(&msg, fmt, ap); \
  43                 /* len does not include the final \0 */ \
  44                 if (len < 0) \
  45                         goto end; \
  46                 __tracepoint_cb_lttng_ust_tracelog___##level(file, \
  47                         line, func, msg, len, \
  48                         LTTNG_UST_CALLER_IP()); \
  49                 free(msg); \
  50         end: \
  51                 va_end(ap); \
  52         }
  53
  54 TRACELOG_CB(TRACE_EMERG)
  55 TRACELOG_CB(TRACE_ALERT)
  56 TRACELOG_CB(TRACE_CRIT)
  57 TRACELOG_CB(TRACE_ERR)
  58 TRACELOG_CB(TRACE_WARNING)
  59 TRACELOG_CB(TRACE_NOTICE)
  60 TRACELOG_CB(TRACE_INFO)
  61 TRACELOG_CB(TRACE_DEBUG_SYSTEM)
  62 TRACELOG_CB(TRACE_DEBUG_PROGRAM)
  63 TRACELOG_CB(TRACE_DEBUG_PROCESS)
  64 TRACELOG_CB(TRACE_DEBUG_MODULE)
  65 TRACELOG_CB(TRACE_DEBUG_UNIT)
  66 TRACELOG_CB(TRACE_DEBUG_FUNCTION)
  67 TRACELOG_CB(TRACE_DEBUG_LINE)
  68 TRACELOG_CB(TRACE_DEBUG)