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 <ust-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, format(printf, 1, 0)))
  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 __attribute__((format(printf, 1, 0)))
  32 void _lttng_ust_vtracef(const char *fmt, va_list ap);
  33 void _lttng_ust_vtracef(const char *fmt, va_list ap)
  34 {
  35         __lttng_ust_vtracef(fmt, ap);
  36 }
  37
  38 __attribute__((format(printf, 1, 2)))
  39 void _lttng_ust_tracef(const char *fmt, ...);
  40 void _lttng_ust_tracef(const char *fmt, ...)
  41 {
  42         va_list ap;
  43
  44         va_start(ap, fmt);
  45         __lttng_ust_vtracef(fmt, ap);
  46         va_end(ap);
  47 }