include/babeltrace/graph/component-class-sink-const.h

   1 #ifndef BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_CONST_H
   2 #define BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_CONST_H
   3
   4 /*
   5  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   6  * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26
  27 /* For bt_component_class, bt_component_class_sink, __BT_UPCAST_CONST */
  28 #include <babeltrace/types.h>
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 static inline
  35 const bt_component_class *
  36 bt_component_class_sink_as_component_class_const(
  37                 const bt_component_class_sink *comp_cls_sink)
  38 {
  39         return __BT_UPCAST_CONST(bt_component_class, comp_cls_sink);
  40 }
  41
  42 extern void bt_component_class_sink_get_ref(
  43                 const bt_component_class_sink *component_class_sink);
  44
  45 extern void bt_component_class_sink_put_ref(
  46                 const bt_component_class_sink *component_class_sink);
  47
  48 #define BT_COMPONENT_CLASS_SINK_PUT_REF_AND_RESET(_var)         \
  49         do {                                                    \
  50                 bt_component_class_sink_put_ref(_var);          \
  51                 (_var) = NULL;                                  \
  52         } while (0)
  53
  54 #define BT_COMPONENT_CLASS_SINK_MOVE_REF(_var_dst, _var_src)    \
  55         do {                                                    \
  56                 bt_component_class_sink_put_ref(_var_dst);      \
  57                 (_var_dst) = (_var_src);                        \
  58                 (_var_src) = NULL;                              \
  59         } while (0)
  60
  61 #ifdef __cplusplus
  62 }
  63 #endif
  64
  65 #endif /* BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_CONST_H */