lttng-tracer.h

   1 #ifndef _LTTNG_TRACER_H
   2 #define _LTTNG_TRACER_H
   3
   4 /*
   5  * lttng-tracer.h
   6  *
   7  * This contains the definitions for the Linux Trace Toolkit Next
   8  * Generation tracer.
   9  *
  10  * Copyright (C) 2005-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  11  *
  12  * This library is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU Lesser General Public
  14  * License as published by the Free Software Foundation; only
  15  * version 2.1 of the License.
  16  *
  17  * This library is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20  * Lesser General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public
  23  * License along with this library; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  25  */
  26
  27 #include <stdarg.h>
  28 #include <linux/types.h>
  29 #include <linux/limits.h>
  30 #include <linux/list.h>
  31 #include <linux/cache.h>
  32 #include <linux/timex.h>
  33 #include <linux/wait.h>
  34 #include <asm/atomic.h>
  35 #include <asm/local.h>
  36
  37 #include "wrapper/trace-clock.h"
  38 #include "wrapper/compiler.h"
  39 #include "lttng-tracer-core.h"
  40 #include "lttng-events.h"
  41
  42 #define LTTNG_MODULES_MAJOR_VERSION 2
  43 #define LTTNG_MODULES_MINOR_VERSION 3
  44 #define LTTNG_MODULES_PATCHLEVEL_VERSION 4
  45
  46 #define LTTNG_VERSION_NAME              "Dominus Vobiscum"
  47 #define LTTNG_VERSION_DESCRIPTION       \
  48         "A very succulent line-up of beers brewed at Microbrasserie Charlevoix. Elaborated starting from special malts and fermented with a Belgian yeast. These beers are refermented in bottle and will make you discover the richness of wheat, amber and triple styles."
  49
  50 #ifndef CHAR_BIT
  51 #define CHAR_BIT 8
  52 #endif
  53
  54 /* Number of bytes to log with a read/write event */
  55 #define LTTNG_LOG_RW_SIZE               32L
  56 #define LTTNG_MAX_SMALL_SIZE            0xFFFFU
  57
  58 #ifdef RING_BUFFER_ALIGN
  59 #define lttng_alignof(type)     __alignof__(type)
  60 #else
  61 #define lttng_alignof(type)     1
  62 #endif
  63
  64 /* Tracer properties */
  65 #define CTF_MAGIC_NUMBER                0xC1FC1FC1
  66 #define TSDL_MAGIC_NUMBER               0x75D11D57
  67
  68 /* CTF specification version followed */
  69 #define CTF_SPEC_MAJOR                  1
  70 #define CTF_SPEC_MINOR                  8
  71
  72 /*
  73  * Number of milliseconds to retry before failing metadata writes on buffer full
  74  * condition. (10 seconds)
  75  */
  76 #define LTTNG_METADATA_TIMEOUT_MSEC     10000
  77
  78 #define LTTNG_RFLAG_EXTENDED            RING_BUFFER_RFLAG_END
  79 #define LTTNG_RFLAG_END                 (LTTNG_RFLAG_EXTENDED << 1)
  80
  81 #endif /* _LTTNG_TRACER_H */