include/lttng/condition/evaluation-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_EVALUATION_INTERNAL_H
  19 #define LTTNG_EVALUATION_INTERNAL_H
  20
  21 #include <lttng/condition/evaluation.h>
  22 #include <common/macros.h>
  23 #include <common/buffer-view.h>
  24 #include <common/dynamic-buffer.h>
  25 #include <stdbool.h>
  26 #include <sys/types.h>
  27
  28 typedef void (*evaluation_destroy_cb)(struct lttng_evaluation *evaluation);
  29 typedef int (*evaluation_serialize_cb)(
  30                 const struct lttng_evaluation *evaluation,
  31                 struct lttng_dynamic_buffer *buf);
  32
  33 struct lttng_evaluation_comm {
  34         /* enum lttng_condition_type type */
  35         int8_t type;
  36         char payload[];
  37 } LTTNG_PACKED;
  38
  39 struct lttng_evaluation {
  40         enum lttng_condition_type type;
  41         evaluation_serialize_cb serialize;
  42         evaluation_destroy_cb destroy;
  43 };
  44
  45 LTTNG_HIDDEN
  46 void lttng_evaluation_init(struct lttng_evaluation *evaluation,
  47                 enum lttng_condition_type type);
  48
  49 LTTNG_HIDDEN
  50 ssize_t lttng_evaluation_create_from_buffer(const struct lttng_buffer_view *view,
  51                 struct lttng_evaluation **evaluation);
  52
  53 LTTNG_HIDDEN
  54 int lttng_evaluation_serialize(const struct lttng_evaluation *evaluation,
  55                 struct lttng_dynamic_buffer *buf);
  56
  57 #endif /* LTTNG_EVALUATION_INTERNAL_H */