src/common/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 _UST_COMMON_TRACER_H
  12 #define _UST_COMMON_TRACER_H
  13
  14 #include <stddef.h>
  15
  16 #include "common/events.h"
  17
  18 /* Tracer properties */
  19 #define CTF_MAGIC_NUMBER                0xC1FC1FC1
  20 #define TSDL_MAGIC_NUMBER               0x75D11D57
  21
  22 /* CTF specification version followed */
  23 #define CTF_SPEC_MAJOR                  1
  24 #define CTF_SPEC_MINOR                  8
  25
  26 #define LTTNG_RFLAG_EXTENDED            RING_BUFFER_RFLAG_END
  27 #define LTTNG_RFLAG_END                 (LTTNG_RFLAG_EXTENDED << 1)
  28
  29 /*
  30  * LTTng client type enumeration. Used by the consumer to map the
  31  * callbacks from its own address space.
  32  */
  33 enum lttng_client_types {
  34         LTTNG_CLIENT_METADATA = 0,
  35         LTTNG_CLIENT_DISCARD = 1,
  36         LTTNG_CLIENT_OVERWRITE = 2,
  37         LTTNG_CLIENT_DISCARD_RT = 3,
  38         LTTNG_CLIENT_OVERWRITE_RT = 4,
  39         LTTNG_NR_CLIENT_TYPES,
  40 };
  41
  42 struct lttng_transport *lttng_ust_transport_find(const char *name)
  43         __attribute__((visibility("hidden")));
  44
  45 void lttng_transport_register(struct lttng_transport *transport)
  46         __attribute__((visibility("hidden")));
  47
  48 void lttng_transport_unregister(struct lttng_transport *transport)
  49         __attribute__((visibility("hidden")));
  50
  51
  52 struct lttng_counter_transport *lttng_counter_transport_find(const char *name)
  53         __attribute__((visibility("hidden")));
  54
  55 void lttng_counter_transport_register(struct lttng_counter_transport *transport)
  56         __attribute__((visibility("hidden")));
  57
  58 void lttng_counter_transport_unregister(struct lttng_counter_transport *transport)
  59         __attribute__((visibility("hidden")));
  60
  61
  62 size_t lttng_ust_dummy_get_size(void *priv, struct lttng_ust_probe_ctx *probe_ctx,
  63                 size_t offset)
  64         __attribute__((visibility("hidden")));
  65
  66 void lttng_ust_dummy_record(void *priv, struct lttng_ust_probe_ctx *probe_ctx,
  67                 struct lttng_ust_ring_buffer_ctx *ctx,
  68                 struct lttng_ust_channel_buffer *chan)
  69         __attribute__((visibility("hidden")));
  70
  71 void lttng_ust_dummy_get_value(void *priv, struct lttng_ust_probe_ctx *probe_ctx,
  72                 struct lttng_ust_ctx_value *value)
  73         __attribute__((visibility("hidden")));
  74
  75 int lttng_context_is_app(const char *name)
  76         __attribute__((visibility("hidden")));
  77
  78 struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void)
  79         __attribute__((visibility("hidden")));
  80
  81 void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan)
  82         __attribute__((visibility("hidden")));
  83
  84 #endif /* _UST_COMMON_TRACER_H */