liblttng-ust/lttng-rb-clients.h

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  */
   6
   7 #ifndef _LTTNG_RB_CLIENT_H
   8 #define _LTTNG_RB_CLIENT_H
   9
  10 #include <stdint.h>
  11 #include "../libringbuffer/ringbuffer-config.h"
  12
  13 struct lttng_ust_client_lib_ring_buffer_client_cb {
  14         struct lttng_ust_lib_ring_buffer_client_cb parent;
  15
  16         int (*timestamp_begin) (struct lttng_ust_lib_ring_buffer *buf,
  17                         struct lttng_ust_lib_ring_buffer_channel *chan,
  18                         uint64_t *timestamp_begin);
  19         int (*timestamp_end) (struct lttng_ust_lib_ring_buffer *buf,
  20                         struct lttng_ust_lib_ring_buffer_channel *chan,
  21                         uint64_t *timestamp_end);
  22         int (*events_discarded) (struct lttng_ust_lib_ring_buffer *buf,
  23                         struct lttng_ust_lib_ring_buffer_channel *chan,
  24                         uint64_t *events_discarded);
  25         int (*content_size) (struct lttng_ust_lib_ring_buffer *buf,
  26                         struct lttng_ust_lib_ring_buffer_channel *chan,
  27                         uint64_t *content_size);
  28         int (*packet_size) (struct lttng_ust_lib_ring_buffer *buf,
  29                         struct lttng_ust_lib_ring_buffer_channel *chan,
  30                         uint64_t *packet_size);
  31         int (*stream_id) (struct lttng_ust_lib_ring_buffer *buf,
  32                         struct lttng_ust_lib_ring_buffer_channel *chan,
  33                         uint64_t *stream_id);
  34         int (*current_timestamp) (struct lttng_ust_lib_ring_buffer *buf,
  35                         struct lttng_ust_lib_ring_buffer_channel *chan,
  36                         uint64_t *ts);
  37         int (*sequence_number) (struct lttng_ust_lib_ring_buffer *buf,
  38                 struct lttng_ust_lib_ring_buffer_channel *chan, uint64_t *seq);
  39         int (*instance_id) (struct lttng_ust_lib_ring_buffer *buf,
  40                         struct lttng_ust_lib_ring_buffer_channel *chan, uint64_t *id);
  41 };
  42
  43 /*
  44  * The ring buffer clients init/exit symbols are private ABI for
  45  * liblttng-ust-ctl, which is why they are not hidden.
  46  */
  47 void lttng_ust_ring_buffer_clients_init(void);
  48 void lttng_ust_ring_buffer_clients_exit(void);
  49
  50 __attribute__((visibility("hidden")))
  51 void lttng_ring_buffer_client_overwrite_init(void);
  52 __attribute__((visibility("hidden")))
  53 void lttng_ring_buffer_client_overwrite_rt_init(void);
  54 __attribute__((visibility("hidden")))
  55 void lttng_ring_buffer_client_discard_init(void);
  56 __attribute__((visibility("hidden")))
  57 void lttng_ring_buffer_client_discard_rt_init(void);
  58 __attribute__((visibility("hidden")))
  59 void lttng_ring_buffer_metadata_client_init(void);
  60
  61 __attribute__((visibility("hidden")))
  62 void lttng_ring_buffer_client_overwrite_exit(void);
  63 __attribute__((visibility("hidden")))
  64 void lttng_ring_buffer_client_overwrite_rt_exit(void);
  65 __attribute__((visibility("hidden")))
  66 void lttng_ring_buffer_client_discard_exit(void);
  67 __attribute__((visibility("hidden")))
  68 void lttng_ring_buffer_client_discard_rt_exit(void);
  69 __attribute__((visibility("hidden")))
  70 void lttng_ring_buffer_metadata_client_exit(void);
  71
  72 __attribute__((visibility("hidden")))
  73 void lttng_ust_fixup_ring_buffer_client_overwrite_tls(void);
  74 __attribute__((visibility("hidden")))
  75 void lttng_ust_fixup_ring_buffer_client_overwrite_rt_tls(void);
  76 __attribute__((visibility("hidden")))
  77 void lttng_ust_fixup_ring_buffer_client_discard_tls(void);
  78 __attribute__((visibility("hidden")))
  79 void lttng_ust_fixup_ring_buffer_client_discard_rt_tls(void);
  80
  81 #endif /* _LTTNG_RB_CLIENT_H */