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 <common/buffer-view.h>
  24 #include <common/dynamic-buffer.h>
  25 #include <stdbool.h>
  26 #include <urcu/list.h>
  27 #include <stdint.h>
  28 #include <sys/types.h>
  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_dynamic_buffer *buf);
  35 typedef bool (*condition_equal_cb)(const struct lttng_condition *a,
  36                 const struct lttng_condition *b);
  37 typedef ssize_t (*condition_create_from_buffer_cb)(
  38                 const struct lttng_buffer_view *view,
  39                 struct lttng_condition **condition);
  40
  41 struct lttng_condition {
  42         enum lttng_condition_type type;
  43         condition_validate_cb validate;
  44         condition_serialize_cb serialize;
  45         condition_equal_cb equal;
  46         condition_destroy_cb destroy;
  47 };
  48
  49 struct lttng_condition_comm {
  50         /* enum lttng_condition_type */
  51         int8_t condition_type;
  52         char payload[];
  53 };
  54
  55 LTTNG_HIDDEN
  56 void lttng_condition_init(struct lttng_condition *condition,
  57                 enum lttng_condition_type type);
  58
  59 LTTNG_HIDDEN
  60 bool lttng_condition_validate(const struct lttng_condition *condition);
  61
  62 LTTNG_HIDDEN
  63 ssize_t lttng_condition_create_from_buffer(
  64                 const struct lttng_buffer_view *buffer,
  65                 struct lttng_condition **condition);
  66
  67 LTTNG_HIDDEN
  68 int lttng_condition_serialize(const struct lttng_condition *condition,
  69                 struct lttng_dynamic_buffer *buf);
  70
  71 LTTNG_HIDDEN
  72 bool lttng_condition_is_equal(const struct lttng_condition *a,
  73                 const struct lttng_condition *b);
  74
  75 #endif /* LTTNG_CONDITION_INTERNAL_H */