include/lttng/condition/condition-internal.h

   1 /*
   2  * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * This library is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License, version 2.1 only,
   6  * as published by the Free Software Foundation.
   7  *
   8  * This library is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
  11  * for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this library; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16  */
  17
  18 #ifndef LTTNG_CONDITION_INTERNAL_H
  19 #define LTTNG_CONDITION_INTERNAL_H
  20
  21 #include <lttng/condition/condition.h>
  22 #include <common/macros.h>
  23 #include <stdbool.h>
  24 #include <urcu/list.h>
  25
  26 typedef void (*condition_destroy_cb)(struct lttng_condition *condition);
  27 typedef bool (*condition_validate_cb)(struct lttng_condition *condition);
  28 typedef ssize_t (*condition_serialize_cb)(struct lttng_condition *condition,
  29                 char *buf);
  30 typedef bool (*condition_equal_cb)(struct lttng_condition *a,
  31                 struct lttng_condition *b);
  32
  33 struct lttng_condition {
  34         enum lttng_condition_type type;
  35         condition_validate_cb validate;
  36         condition_serialize_cb serialize;
  37         condition_equal_cb equal;
  38         condition_destroy_cb destroy;
  39         struct cds_list_head list_node;
  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_init(struct lttng_condition *condition,
  50                 enum lttng_condition_type type);
  51
  52 LTTNG_HIDDEN
  53 bool lttng_condition_validate(struct lttng_condition *condition);
  54
  55 LTTNG_HIDDEN
  56 ssize_t lttng_condition_create_from_buffer(const char *buf,
  57                 struct lttng_condition **condition);
  58
  59 LTTNG_HIDDEN
  60 ssize_t lttng_condition_serialize(struct lttng_condition *condition, char *buf);
  61
  62 LTTNG_HIDDEN
  63 bool lttng_condition_is_equal(struct lttng_condition *a,
  64                 struct lttng_condition *b);
  65
  66 #endif /* LTTNG_CONDITION_INTERNAL_H */