include/lttng/condition/condition.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_H
  19 #define LTTNG_CONDITION_H
  20
  21 #include <lttng/lttng.h>
  22
  23 #ifdef __cplusplus
  24 extern "C" {
  25 #endif
  26
  27 struct lttng_condition;
  28
  29 enum lttng_condition_type {
  30         LTTNG_CONDITION_TYPE_UNKNOWN = -1,
  31         LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW = 102,
  32         LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH = 101,
  33 };
  34
  35 enum lttng_condition_status {
  36         LTTNG_CONDITION_STATUS_OK = 0,
  37         LTTNG_CONDITION_STATUS_ERROR = -1,
  38         LTTNG_CONDITION_STATUS_UNKNOWN = -2,
  39         LTTNG_CONDITION_STATUS_INVALID = -3,
  40         LTTNG_CONDITION_STATUS_UNSET = -4,
  41 };
  42
  43 /*
  44  * Get the type of a condition.
  45  *
  46  * Returns the type of a condition on success, LTTNG_CONDITION_TYPE_UNKNOWN on
  47  * error.
  48  */
  49 extern enum lttng_condition_type lttng_condition_get_type(
  50                 const struct lttng_condition *condition);
  51
  52 /*
  53  * Destroy (frees) a condition object.
  54  */
  55 extern void lttng_condition_destroy(struct lttng_condition *condition);
  56
  57 #ifdef __cplusplus
  58 }
  59 #endif
  60
  61 #endif /* LTTNG_CONDITION_H */