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 <wrapper/vmalloc.h>
  40 #include <lttng-tracer-core.h>
  41 #include <lttng-events.h>
  42
  43 #define LTTNG_MODULES_MAJOR_VERSION 2
  44 #define LTTNG_MODULES_MINOR_VERSION 10
  45 #define LTTNG_MODULES_PATCHLEVEL_VERSION 0
  46 #define LTTNG_MODULES_EXTRAVERSION "-rc1"
  47
  48 #define LTTNG_VERSION_NAME              "KeKriek"
  49 #define LTTNG_VERSION_DESCRIPTION       "From Brasserie Dunham, a sour mashed golden wheat ale fermented with local sour cherries from Tougas orchards. Fresh sweet cherry notes with some tartness, lively carbonation with a dry finish."
  50
  51 #ifndef CHAR_BIT
  52 #define CHAR_BIT 8
  53 #endif
  54
  55 /* Number of bytes to log with a read/write event */
  56 #define LTTNG_LOG_RW_SIZE               32L
  57 #define LTTNG_MAX_SMALL_SIZE            0xFFFFU
  58
  59 #ifdef RING_BUFFER_ALIGN
  60 #define lttng_alignof(type)     __alignof__(type)
  61 #else
  62 #define lttng_alignof(type)     1
  63 #endif
  64
  65 /* Tracer properties */
  66 #define CTF_MAGIC_NUMBER                0xC1FC1FC1
  67 #define TSDL_MAGIC_NUMBER               0x75D11D57
  68
  69 /* CTF specification version followed */
  70 #define CTF_SPEC_MAJOR                  1
  71 #define CTF_SPEC_MINOR                  8
  72
  73 /*
  74  * Number of milliseconds to retry before failing metadata writes on buffer full
  75  * condition. (10 seconds)
  76  */
  77 #define LTTNG_METADATA_TIMEOUT_MSEC     10000
  78
  79 #define LTTNG_RFLAG_EXTENDED            RING_BUFFER_RFLAG_END
  80 #define LTTNG_RFLAG_END                 (LTTNG_RFLAG_EXTENDED << 1)
  81
  82 #endif /* _LTTNG_TRACER_H */