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 #if defined(__cplusplus)
  23 extern "C" {
  24 #endif
  25
  26 struct mi_writer;
  27 struct mi_lttng_error_query_callbacks;
  28 struct lttng_trigger;
  29
  30 typedef void (*condition_destroy_cb)(struct lttng_condition *condition);
  31 typedef bool (*condition_validate_cb)(const struct lttng_condition *condition);
  32 typedef int (*condition_serialize_cb)(
  33                 const struct lttng_condition *condition,
  34                 struct lttng_payload *payload);
  35 typedef bool (*condition_equal_cb)(const struct lttng_condition *a,
  36                 const struct lttng_condition *b);
  37 typedef ssize_t (*condition_create_from_payload_cb)(
  38                 struct lttng_payload_view *view,
  39                 struct lttng_condition **condition);
  40 typedef enum lttng_error_code (*condition_mi_serialize_cb)(
  41                 const struct lttng_condition *condition,
  42                 struct mi_writer *writer);
  43
  44 struct lttng_condition {
  45         /* Reference counting is only exposed to internal users. */
  46         struct urcu_ref ref;
  47         enum lttng_condition_type type;
  48         condition_validate_cb validate;
  49         condition_serialize_cb serialize;
  50         condition_equal_cb equal;
  51         condition_destroy_cb destroy;
  52         condition_mi_serialize_cb mi_serialize;
  53 };
  54
  55 struct lttng_condition_comm {
  56         /* enum lttng_condition_type */
  57         int8_t condition_type;
  58         char payload[];
  59 };
  60
  61 void lttng_condition_get(struct lttng_condition *condition);
  62
  63 void lttng_condition_put(struct lttng_condition *condition);
  64
  65 void lttng_condition_init(struct lttng_condition *condition,
  66                 enum lttng_condition_type type);
  67
  68 bool lttng_condition_validate(const struct lttng_condition *condition);
  69
  70 ssize_t lttng_condition_create_from_payload(
  71                 struct lttng_payload_view *view,
  72                 struct lttng_condition **condition);
  73
  74 int lttng_condition_serialize(const struct lttng_condition *condition,
  75                 struct lttng_payload *payload);
  76
  77 bool lttng_condition_is_equal(const struct lttng_condition *a,
  78                 const struct lttng_condition *b);
  79
  80 enum lttng_error_code lttng_condition_mi_serialize(
  81                 const struct lttng_trigger *trigger,
  82                 const struct lttng_condition *condition,
  83                 struct mi_writer *writer,
  84                 const struct mi_lttng_error_query_callbacks
  85                                 *error_query_callbacks);
  86
  87 const char *lttng_condition_type_str(enum lttng_condition_type type);
  88
  89 #if defined(__cplusplus)
  90 }
  91 #endif
  92
  93 #endif /* LTTNG_CONDITION_INTERNAL_H */