include/lttng/condition/condition-internal.hpp

   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 <common/macros.hpp>
  12 #include <common/payload-view.hpp>
  13 #include <common/payload.hpp>
  14 #include <lttng/condition/condition.h>
  15 #include <lttng/lttng-error.h>
  16 #include <stdbool.h>
  17 #include <stdint.h>
  18 #include <sys/types.h>
  19 #include <urcu/list.h>
  20 #include <urcu/ref.h>
  21
  22 struct mi_writer;
  23 struct mi_lttng_error_query_callbacks;
  24 struct lttng_trigger;
  25
  26 using condition_destroy_cb = void (*)(struct lttng_condition *);
  27 using condition_validate_cb = bool (*)(const struct lttng_condition *);
  28 using condition_serialize_cb = int (*)(const struct lttng_condition *, struct lttng_payload *);
  29 using condition_equal_cb = bool (*)(const struct lttng_condition *, const struct lttng_condition *);
  30 using condition_create_from_payload_cb = ssize_t (*)(struct lttng_payload_view *,
  31                                                      struct lttng_condition **);
  32 using condition_mi_serialize_cb = enum lttng_error_code (*)(const struct lttng_condition *,
  33                                                             struct mi_writer *);
  34
  35 struct lttng_condition {
  36         /* Reference counting is only exposed to internal users. */
  37         struct urcu_ref ref;
  38         enum lttng_condition_type type;
  39         condition_validate_cb validate;
  40         condition_serialize_cb serialize;
  41         condition_equal_cb equal;
  42         condition_destroy_cb destroy;
  43         condition_mi_serialize_cb mi_serialize;
  44 };
  45
  46 struct lttng_condition_comm {
  47         /* enum lttng_condition_type */
  48         int8_t condition_type;
  49         char payload[];
  50 };
  51
  52 void lttng_condition_get(struct lttng_condition *condition);
  53
  54 void lttng_condition_put(struct lttng_condition *condition);
  55
  56 void lttng_condition_init(struct lttng_condition *condition,
  57                 enum lttng_condition_type type);
  58
  59 bool lttng_condition_validate(const struct lttng_condition *condition);
  60
  61 ssize_t lttng_condition_create_from_payload(
  62                 struct lttng_payload_view *view,
  63                 struct lttng_condition **condition);
  64
  65 int lttng_condition_serialize(const struct lttng_condition *condition,
  66                 struct lttng_payload *payload);
  67
  68 bool lttng_condition_is_equal(const struct lttng_condition *a,
  69                 const struct lttng_condition *b);
  70
  71 enum lttng_error_code lttng_condition_mi_serialize(
  72                 const struct lttng_trigger *trigger,
  73                 const struct lttng_condition *condition,
  74                 struct mi_writer *writer,
  75                 const struct mi_lttng_error_query_callbacks
  76                                 *error_query_callbacks);
  77
  78 const char *lttng_condition_type_str(enum lttng_condition_type type);
  79
  80 #endif /* LTTNG_CONDITION_INTERNAL_H */