include/babeltrace2/graph/connection-const.h

   1 #ifndef BABELTRACE2_GRAPH_CONNECTION_CONST_H
   2 #define BABELTRACE2_GRAPH_CONNECTION_CONST_H
   3
   4 /*
   5  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   6  * Copyright 2017 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 #ifndef __BT_IN_BABELTRACE_H
  28 # error "Please include <babeltrace2/babeltrace.h> instead."
  29 #endif
  30
  31 /* For bt_bool, bt_port_input, bt_port_output, bt_connection */
  32 #include <babeltrace2/types.h>
  33
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 extern const bt_port_input *bt_connection_borrow_downstream_port_const(
  39                 const bt_connection *connection);
  40
  41 extern const bt_port_output *bt_connection_borrow_upstream_port_const(
  42                 const bt_connection *connection);
  43
  44 extern void bt_connection_get_ref(const bt_connection *connection);
  45
  46 extern void bt_connection_put_ref(const bt_connection *connection);
  47
  48 #define BT_CONNECTION_PUT_REF_AND_RESET(_var)           \
  49         do {                                            \
  50                 bt_connection_put_ref(_var);            \
  51                 (_var) = NULL;                          \
  52         } while (0)
  53
  54 #define BT_CONNECTION_MOVE_REF(_var_dst, _var_src)      \
  55         do {                                            \
  56                 bt_connection_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 /* BABELTRACE2_GRAPH_CONNECTION_CONST_H */