include/lttng/notification/notification-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_NOTIFICATION_INTERNAL_H
  19 #define LTTNG_NOTIFICATION_INTERNAL_H
  20
  21 #include <lttng/notification/notification.h>
  22 #include <common/macros.h>
  23 #include <common/buffer-view.h>
  24 #include <common/dynamic-buffer.h>
  25 #include <stdint.h>
  26 #include <stdbool.h>
  27 #include <sys/types.h>
  28
  29 struct lttng_notification {
  30         struct lttng_condition *condition;
  31         struct lttng_evaluation *evaluation;
  32 };
  33
  34 struct lttng_notification_comm {
  35         /* Size of the payload following this field. */
  36         uint32_t length;
  37         /* Condition and evaluation objects follow. */
  38         char payload[];
  39 } LTTNG_PACKED;
  40
  41 LTTNG_HIDDEN
  42 struct lttng_notification *lttng_notification_create(
  43                 struct lttng_condition *condition,
  44                 struct lttng_evaluation *evaluation);
  45
  46 LTTNG_HIDDEN
  47 int lttng_notification_serialize(const struct lttng_notification *notification,
  48                 struct lttng_dynamic_buffer *buf);
  49
  50 LTTNG_HIDDEN
  51 ssize_t lttng_notification_create_from_buffer(
  52                 const struct lttng_buffer_view *view,
  53                 struct lttng_notification **notification);
  54
  55 #endif /* LTTNG_NOTIFICATION_INTERNAL_H */