liblttng-ust/tracef.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 <helper.h>
  10
  11 #define TRACEPOINT_CREATE_PROBES
  12 #define TRACEPOINT_DEFINE
  13 #include "lttng-ust-tracef-provider.h"
  14
  15 static inline __attribute__((always_inline))
  16 void __lttng_ust_vtracef(const char *fmt, va_list ap)
  17 {
  18         char *msg;
  19         const int len = vasprintf(&msg, fmt, ap);
  20
  21         /* len does not include the final \0 */
  22         if (len < 0)
  23                 goto end;
  24         __tracepoint_cb_lttng_ust_tracef___event(msg, len,
  25                 LTTNG_UST_CALLER_IP());
  26         free(msg);
  27 end:
  28         return;
  29 }
  30
  31 void _lttng_ust_vtracef(const char *fmt, va_list ap)
  32 {
  33         __lttng_ust_vtracef(fmt, ap);
  34 }
  35
  36 void _lttng_ust_tracef(const char *fmt, ...)
  37 {
  38         va_list ap;
  39
  40         va_start(ap, fmt);
  41         __lttng_ust_vtracef(fmt, ap);
  42         va_end(ap);
  43 }