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 <common/payload-view.h>
  16 #include <common/payload.h>
  17 #include <stdbool.h>
  18 #include <sys/types.h>
  19 #include <urcu/ref.h>
  20
  21 typedef bool (*action_validate_cb)(struct lttng_action *action);
  22 typedef void (*action_destroy_cb)(struct lttng_action *action);
  23 typedef int (*action_serialize_cb)(struct lttng_action *action,
  24                 struct lttng_payload *payload);
  25 typedef bool (*action_equal_cb)(const struct lttng_action *a,
  26                 const struct lttng_action *b);
  27 typedef ssize_t (*action_create_from_payload_cb)(
  28                 struct lttng_payload_view *view,
  29                 struct lttng_action **action);
  30
  31 struct lttng_action {
  32         struct urcu_ref ref;
  33         enum lttng_action_type type;
  34         action_validate_cb validate;
  35         action_serialize_cb serialize;
  36         action_equal_cb equal;
  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 void lttng_action_init(struct lttng_action *action,
  47                 enum lttng_action_type type,
  48                 action_validate_cb validate,
  49                 action_serialize_cb serialize,
  50                 action_equal_cb equal,
  51                 action_destroy_cb destroy);
  52
  53 LTTNG_HIDDEN
  54 bool lttng_action_validate(struct lttng_action *action);
  55
  56 LTTNG_HIDDEN
  57 int lttng_action_serialize(struct lttng_action *action,
  58                 struct lttng_payload *buf);
  59
  60 LTTNG_HIDDEN
  61 ssize_t lttng_action_create_from_payload(struct lttng_payload_view *view,
  62                 struct lttng_action **action);
  63
  64 LTTNG_HIDDEN
  65 enum lttng_action_type lttng_action_get_type_const(
  66                 const struct lttng_action *action);
  67
  68 LTTNG_HIDDEN
  69 bool lttng_action_is_equal(const struct lttng_action *a,
  70                 const struct lttng_action *b);
  71
  72 LTTNG_HIDDEN
  73 void lttng_action_get(struct lttng_action *action);
  74
  75 LTTNG_HIDDEN
  76 void lttng_action_put(struct lttng_action *action);
  77
  78 LTTNG_HIDDEN
  79 const char* lttng_action_type_string(enum lttng_action_type action_type);
  80
  81 #endif /* LTTNG_ACTION_INTERNAL_H */