lttng-tracer.h

   1 #ifndef _LTTNG_TRACER_H
   2 #define _LTTNG_TRACER_H
   3
   4 /*
   5  * lttng-tracer.h
   6  *
   7  * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   8  *
   9  * This contains the definitions for the Linux Trace Toolkit tracer.
  10  *
  11  * Dual LGPL v2.1/GPL v2 license.
  12  */
  13
  14 #include <stdarg.h>
  15 #include <linux/types.h>
  16 #include <linux/limits.h>
  17 #include <linux/list.h>
  18 #include <linux/cache.h>
  19 #include <linux/timex.h>
  20 #include <linux/wait.h>
  21 #include <asm/atomic.h>
  22 #include <asm/local.h>
  23
  24 #include "wrapper/trace-clock.h"
  25 #include "lttng-tracer-core.h"
  26 #include "lttng-events.h"
  27
  28 #define LTTNG_VERSION 0
  29 #define LTTNG_PATCHLEVEL 9
  30 #define LTTNG_SUBLEVEL 1
  31
  32 #ifndef CHAR_BIT
  33 #define CHAR_BIT 8
  34 #endif
  35
  36 /* Number of bytes to log with a read/write event */
  37 #define LTTNG_LOG_RW_SIZE               32L
  38 #define LTTNG_MAX_SMALL_SIZE            0xFFFFU
  39
  40 #ifdef RING_BUFFER_ALIGN
  41 #define lttng_alignof(type)     __alignof__(type)
  42 #else
  43 #define lttng_alignof(type)     1
  44 #endif
  45
  46 /* Tracer properties */
  47 #define CTF_MAGIC_NUMBER                0xC1FC1FC1
  48 #define TSDL_MAGIC_NUMBER               0x75D11D57
  49
  50 /* CTF specification version followed */
  51 #define CTF_SPEC_MAJOR                  1
  52 #define CTF_SPEC_MINOR                  8
  53
  54 /* Tracer major/minor versions */
  55 #define CTF_VERSION_MAJOR               0
  56 #define CTF_VERSION_MINOR               1
  57
  58 /*
  59  * Number of milliseconds to retry before failing metadata writes on buffer full
  60  * condition. (10 seconds)
  61  */
  62 #define LTTNG_METADATA_TIMEOUT_MSEC     10000
  63
  64 #define LTTNG_RFLAG_EXTENDED            RING_BUFFER_RFLAG_END
  65 #define LTTNG_RFLAG_END                 (LTTNG_RFLAG_EXTENDED << 1)
  66
  67 #endif /* _LTTNG_TRACER_H */