include/lttng/action/action-internal.h

   1 /*
   2  * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef LTTNG_ACTION_INTERNAL_H
   9 #define LTTNG_ACTION_INTERNAL_H
  10
  11 #include <lttng/action/action.h>
  12 #include <common/macros.h>
  13 #include <common/buffer-view.h>
  14 #include <common/dynamic-buffer.h>
  15 #include <stdbool.h>
  16 #include <sys/types.h>
  17 #include <urcu/ref.h>
  18
  19 typedef bool (*action_validate_cb)(struct lttng_action *action);
  20 typedef void (*action_destroy_cb)(struct lttng_action *action);
  21 typedef int (*action_serialize_cb)(struct lttng_action *action,
  22                 struct lttng_dynamic_buffer *buf);
  23 typedef bool (*action_equal_cb)(const struct lttng_action *a,
  24                 const struct lttng_action *b);
  25 typedef ssize_t (*action_create_from_buffer_cb)(
  26                 const struct lttng_buffer_view *view,
  27                 struct lttng_action **action);
  28
  29 struct lttng_action {
  30         struct urcu_ref ref;
  31         enum lttng_action_type type;
  32         action_validate_cb validate;
  33         action_serialize_cb serialize;
  34         action_equal_cb equal;
  35         action_destroy_cb destroy;
  36 };
  37
  38 struct lttng_action_comm {
  39         /* enum lttng_action_type */
  40         int8_t action_type;
  41 } LTTNG_PACKED;
  42
  43 LTTNG_HIDDEN
  44 void lttng_action_init(struct lttng_action *action,
  45                 enum lttng_action_type type,
  46                 action_validate_cb validate,
  47                 action_serialize_cb serialize,
  48                 action_equal_cb equal,
  49                 action_destroy_cb destroy);
  50
  51 LTTNG_HIDDEN
  52 bool lttng_action_validate(struct lttng_action *action);
  53
  54 LTTNG_HIDDEN
  55 int lttng_action_serialize(struct lttng_action *action,
  56                 struct lttng_dynamic_buffer *buf);
  57
  58 LTTNG_HIDDEN
  59 ssize_t lttng_action_create_from_buffer(const struct lttng_buffer_view *view,
  60                 struct lttng_action **action);
  61
  62 LTTNG_HIDDEN
  63 enum lttng_action_type lttng_action_get_type_const(
  64                 const struct lttng_action *action);
  65
  66 LTTNG_HIDDEN
  67 bool lttng_action_is_equal(const struct lttng_action *a,
  68                 const struct lttng_action *b);
  69
  70 LTTNG_HIDDEN
  71 void lttng_action_get(struct lttng_action *action);
  72
  73 LTTNG_HIDDEN
  74 void lttng_action_put(struct lttng_action *action);
  75
  76 LTTNG_HIDDEN
  77 const char* lttng_action_type_string(enum lttng_action_type action_type);
  78
  79 #endif /* LTTNG_ACTION_INTERNAL_H */