include/lttng/ust-tracer.h

   1 #ifndef _LTTNG_TRACER_H
   2 #define _LTTNG_TRACER_H
   3
   4 /*
   5  * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  *
   7  * This contains the core definitions for the Linux Trace Toolkit.
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; version 2.1 of
  12  * the License.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  22  */
  23
  24 #include <lttng/config.h>
  25
  26 #ifndef HAVE_EFFICIENT_UNALIGNED_ACCESS
  27 /* Align data on its natural alignment */
  28 #define RING_BUFFER_ALIGN
  29 #endif
  30
  31 #define LTTNG_UST_VERSION 0
  32 #define LTTNG_UST_PATCHLEVEL 9
  33 #define LTTNG_UST_SUBLEVEL 1
  34
  35 #ifndef CHAR_BIT
  36 #define CHAR_BIT 8
  37 #endif
  38
  39 #ifdef RING_BUFFER_ALIGN
  40 #define lttng_alignof(type)     __alignof__(type)
  41 #else
  42 #define lttng_alignof(type)     1
  43 #endif
  44
  45 #define lttng_is_signed_type(type)           (((type)(-1)) < 0)
  46
  47 #endif /* _LTTNG_TRACER_CORE_H */