include/lttng/action/action-internal.h

   1 /*
   2  * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * This library is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License, version 2.1 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This library is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this library; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16  */
  17
  18 #ifndef LTTNG_ACTION_INTERNAL_H
  19 #define LTTNG_ACTION_INTERNAL_H
  20
  21 #include <lttng/action/action.h>
  22 #include <common/macros.h>
  23 #include <common/buffer-view.h>
  24 #include <common/dynamic-buffer.h>
  25 #include <stdbool.h>
  26 #include <sys/types.h>
  27
  28 typedef bool (*action_validate_cb)(struct lttng_action *action);
  29 typedef void (*action_destroy_cb)(struct lttng_action *action);
  30 typedef int (*action_serialize_cb)(struct lttng_action *action,
  31                 struct lttng_dynamic_buffer *buf);
  32
  33 struct lttng_action {
  34         enum lttng_action_type type;
  35         action_validate_cb validate;
  36         action_serialize_cb serialize;
  37         action_destroy_cb destroy;
  38 };
  39
  40 struct lttng_action_comm {
  41         /* enum lttng_action_type */
  42         int8_t action_type;
  43 } LTTNG_PACKED;
  44
  45 LTTNG_HIDDEN
  46 bool lttng_action_validate(struct lttng_action *action);
  47
  48 LTTNG_HIDDEN
  49 int lttng_action_serialize(struct lttng_action *action,
  50                 struct lttng_dynamic_buffer *buf);
  51
  52 LTTNG_HIDDEN
  53 ssize_t lttng_action_create_from_buffer(const struct lttng_buffer_view *view,
  54                 struct lttng_action **action);
  55
  56 LTTNG_HIDDEN
  57 enum lttng_action_type lttng_action_get_type_const(
  58                 const struct lttng_action *action);
  59
  60 #endif /* LTTNG_ACTION_INTERNAL_H */