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 <common/macros.h>
  12 #include <common/payload-view.h>
  13 #include <common/payload.h>
  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 typedef void (*condition_destroy_cb)(struct lttng_condition *condition);
  27 typedef bool (*condition_validate_cb)(const struct lttng_condition *condition);
  28 typedef int (*condition_serialize_cb)(
  29                 const struct lttng_condition *condition,
  30                 struct lttng_payload *payload);
  31 typedef bool (*condition_equal_cb)(const struct lttng_condition *a,
  32                 const struct lttng_condition *b);
  33 typedef ssize_t (*condition_create_from_payload_cb)(
  34                 struct lttng_payload_view *view,
  35                 struct lttng_condition **condition);
  36 typedef enum lttng_error_code (*condition_mi_serialize_cb)(
  37                 const struct lttng_condition *condition,
  38                 struct mi_writer *writer);
  39
  40 struct lttng_condition {
  41         /* Reference counting is only exposed to internal users. */
  42         struct urcu_ref ref;
  43         enum lttng_condition_type type;
  44         condition_validate_cb validate;
  45         condition_serialize_cb serialize;
  46         condition_equal_cb equal;
  47         condition_destroy_cb destroy;
  48         condition_mi_serialize_cb mi_serialize;
  49 };
  50
  51 struct lttng_condition_comm {
  52         /* enum lttng_condition_type */
  53         int8_t condition_type;
  54         char payload[];
  55 };
  56
  57 void lttng_condition_get(struct lttng_condition *condition);
  58
  59 void lttng_condition_put(struct lttng_condition *condition);
  60
  61 void lttng_condition_init(struct lttng_condition *condition,
  62                 enum lttng_condition_type type);
  63
  64 bool lttng_condition_validate(const struct lttng_condition *condition);
  65
  66 ssize_t lttng_condition_create_from_payload(
  67                 struct lttng_payload_view *view,
  68                 struct lttng_condition **condition);
  69
  70 int lttng_condition_serialize(const struct lttng_condition *condition,
  71                 struct lttng_payload *payload);
  72
  73 bool lttng_condition_is_equal(const struct lttng_condition *a,
  74                 const struct lttng_condition *b);
  75
  76 enum lttng_error_code lttng_condition_mi_serialize(
  77                 const struct lttng_trigger *trigger,
  78                 const struct lttng_condition *condition,
  79                 struct mi_writer *writer,
  80                 const struct mi_lttng_error_query_callbacks
  81                                 *error_query_callbacks);
  82
  83 const char *lttng_condition_type_str(enum lttng_condition_type type);
  84
  85 #endif /* LTTNG_CONDITION_INTERNAL_H */