include/lttng/condition/condition-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_CONDITION_INTERNAL_H
   9 #define LTTNG_CONDITION_INTERNAL_H
  10
  11 #include <lttng/condition/condition.h>
  12 #include <common/macros.h>
  13 #include <common/payload-view.h>
  14 #include <common/payload.h>
  15 #include <stdbool.h>
  16 #include <urcu/list.h>
  17 #include <urcu/ref.h>
  18 #include <stdint.h>
  19 #include <sys/types.h>
  20
  21 typedef void (*condition_destroy_cb)(struct lttng_condition *condition);
  22 typedef bool (*condition_validate_cb)(const struct lttng_condition *condition);
  23 typedef int (*condition_serialize_cb)(
  24                 const struct lttng_condition *condition,
  25                 struct lttng_payload *payload);
  26 typedef bool (*condition_equal_cb)(const struct lttng_condition *a,
  27                 const struct lttng_condition *b);
  28 typedef ssize_t (*condition_create_from_payload_cb)(
  29                 struct lttng_payload_view *view,
  30                 struct lttng_condition **condition);
  31
  32 struct lttng_condition {
  33         /* Reference counting is only exposed to internal users. */
  34         struct urcu_ref ref;
  35         enum lttng_condition_type type;
  36         condition_validate_cb validate;
  37         condition_serialize_cb serialize;
  38         condition_equal_cb equal;
  39         condition_destroy_cb destroy;
  40 };
  41
  42 struct lttng_condition_comm {
  43         /* enum lttng_condition_type */
  44         int8_t condition_type;
  45         char payload[];
  46 };
  47
  48 LTTNG_HIDDEN
  49 void lttng_condition_get(struct lttng_condition *condition);
  50
  51 LTTNG_HIDDEN
  52 void lttng_condition_put(struct lttng_condition *condition);
  53
  54 LTTNG_HIDDEN
  55 void lttng_condition_init(struct lttng_condition *condition,
  56                 enum lttng_condition_type type);
  57
  58 LTTNG_HIDDEN
  59 bool lttng_condition_validate(const struct lttng_condition *condition);
  60
  61 LTTNG_HIDDEN
  62 ssize_t lttng_condition_create_from_payload(
  63                 struct lttng_payload_view *view,
  64                 struct lttng_condition **condition);
  65
  66 LTTNG_HIDDEN
  67 int lttng_condition_serialize(const struct lttng_condition *condition,
  68                 struct lttng_payload *payload);
  69
  70 LTTNG_HIDDEN
  71 bool lttng_condition_is_equal(const struct lttng_condition *a,
  72                 const struct lttng_condition *b);
  73
  74 LTTNG_HIDDEN
  75 const char *lttng_condition_type_str(enum lttng_condition_type type);
  76
  77 #endif /* LTTNG_CONDITION_INTERNAL_H */