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