libust/ltt-tracer.h

   1 #ifndef _LTT_TRACER_H
   2 #define _LTT_TRACER_H
   3
   4 /*
   5  * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  *
   7  * This contains the definitions for the Linux Trace Toolkit tracer.
   8  *
   9  * Ported to userspace by Pierre-Marc Fournier.
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; version 2.1 of
  14  * the License.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  24  */
  25
  26 #include <stdarg.h>
  27 #include <stdint.h>
  28 #include <ust/core.h>
  29 #include <ust/compat.h>
  30 #include <ust/lttng-events.h>
  31 #include "ltt-tracer-core.h"
  32
  33 #define LTTNG_UST_VERSION 0
  34 #define LTTNG_UST_PATCHLEVEL 9
  35 #define LTTNG_UST_SUBLEVEL 1
  36
  37 #ifndef CHAR_BIT
  38 #define CHAR_BIT 8
  39 #endif
  40
  41 /* Number of bytes to log with a read/write event */
  42 #define LTT_LOG_RW_SIZE                 32L
  43 #define LTT_MAX_SMALL_SIZE              0xFFFFU
  44
  45 #ifdef RING_BUFFER_ALIGN
  46 #define ltt_alignof(type)       __alignof__(type)
  47 #else
  48 #define ltt_alignof(type)       1
  49 #endif
  50
  51 /* Tracer properties */
  52 #define CTF_MAGIC_NUMBER                0xC1FC1FC1
  53 #define TSDL_MAGIC_NUMBER               0x75D11D57
  54 #define CTF_VERSION_MAJOR               0
  55 #define CTF_VERSION_MINOR               1
  56
  57 /*
  58  * Number of milliseconds to retry before failing metadata writes on buffer full
  59  * condition. (10 seconds)
  60  */
  61 #define LTTNG_METADATA_TIMEOUT_MSEC     10000
  62
  63 #define LTT_RFLAG_EXTENDED              RING_BUFFER_RFLAG_END
  64 #define LTT_RFLAG_END                   (LTT_RFLAG_EXTENDED << 1)
  65
  66 #endif /* _LTT_TRACER_H */