include/lttng/session-internal.hpp

   1 /*
   2  * Copyright (C) 2019 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef LTTNG_SESSION_INTERNAL_H
   9 #define LTTNG_SESSION_INTERNAL_H
  10
  11 #include <common/buffer-view.hpp>
  12 #include <common/macros.hpp>
  13 #include <common/optional.hpp>
  14 #include <lttng/constant.h>
  15 #include <lttng/lttng-error.h>
  16
  17 struct lttng_session;
  18 struct lttng_payload_view;
  19
  20 struct lttng_session_extended {
  21         LTTNG_OPTIONAL(uint64_t) creation_time;
  22 };
  23
  24 struct lttng_session_comm {
  25         uint32_t name_len;
  26         uint32_t path_len;
  27         uint8_t enabled;
  28         uint32_t snapshot_mode;
  29         uint32_t live_timer_interval;
  30         /* lttng_session_extended data */
  31         LTTNG_OPTIONAL(uint64_t) LTTNG_PACKED creation_time;
  32         /*
  33          * Dynamic payload:
  34          *   - name[name_len]
  35          *   - path[path_len]
  36          */
  37         char payload[];
  38 } LTTNG_PACKED;
  39
  40 int lttng_session_serialize(const struct lttng_session *session, struct lttng_payload *payload);
  41
  42 ssize_t lttng_session_create_from_payload(
  43                 struct lttng_payload_view *view, struct lttng_session **out_session);
  44
  45 enum lttng_error_code lttng_sessions_create_and_flatten_from_payload(
  46                 struct lttng_payload_view *view,
  47                 unsigned int count,
  48                 struct lttng_session **sessions);
  49
  50 #endif /* LTTNG_SESSION_INTERNAL_H */