src/lib/lttng-ust/lttng-tracer.h

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  *
   6  * This contains the definitions for the Linux Trace Toolkit tracer.
   7  *
   8  * Ported to userspace by Pierre-Marc Fournier.
   9  */
  10
  11 #ifndef _LTTNG_TRACER_H
  12 #define _LTTNG_TRACER_H
  13
  14 #include <stdarg.h>
  15 #include <stdint.h>
  16 #include <lttng/ust-events.h>
  17 #include "lttng-tracer-core.h"
  18
  19 /* Tracer properties */
  20 #define CTF_MAGIC_NUMBER                0xC1FC1FC1
  21 #define TSDL_MAGIC_NUMBER               0x75D11D57
  22
  23 /* CTF specification version followed */
  24 #define CTF_SPEC_MAJOR                  1
  25 #define CTF_SPEC_MINOR                  8
  26
  27 /*
  28  * Number of milliseconds to retry before failing metadata writes on buffer full
  29  * condition. (10 seconds)
  30  */
  31 #define LTTNG_METADATA_TIMEOUT_MSEC     10000
  32
  33 #define LTTNG_RFLAG_EXTENDED            RING_BUFFER_RFLAG_END
  34 #define LTTNG_RFLAG_END                 (LTTNG_RFLAG_EXTENDED << 1)
  35
  36 /*
  37  * LTTng client type enumeration. Used by the consumer to map the
  38  * callbacks from its own address space.
  39  */
  40 enum lttng_client_types {
  41         LTTNG_CLIENT_METADATA = 0,
  42         LTTNG_CLIENT_DISCARD = 1,
  43         LTTNG_CLIENT_OVERWRITE = 2,
  44         LTTNG_CLIENT_DISCARD_RT = 3,
  45         LTTNG_CLIENT_OVERWRITE_RT = 4,
  46         LTTNG_NR_CLIENT_TYPES,
  47 };
  48
  49 #endif /* _LTTNG_TRACER_H */