include/babeltrace/graph/connection.h

   1 #ifndef BABELTRACE_GRAPH_CONNECTION_H
   2 #define BABELTRACE_GRAPH_CONNECTION_H
   3
   4 /*
   5  * BabelTrace - Babeltrace Component Connection Interface
   6  *
   7  * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   8  *
   9  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a copy
  12  * of this software and associated documentation files (the "Software"), to deal
  13  * in the Software without restriction, including without limitation the rights
  14  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  15  * copies of the Software, and to permit persons to whom the Software is
  16  * furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice shall be included in
  19  * all copies or substantial portions of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  24  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  26  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  27  * SOFTWARE.
  28  */
  29
  30 #include <babeltrace/types.h>
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 struct bt_component;
  37 struct bt_connection;
  38
  39 enum bt_connection_status {
  40         BT_CONNECTION_STATUS_GRAPH_IS_CANCELED = 125,
  41         BT_CONNECTION_STATUS_OK = 0,
  42         BT_CONNECTION_STATUS_INVALID = -22,
  43         BT_CONNECTION_STATUS_ERROR = -1,
  44         BT_CONNECTION_STATUS_NOMEM = -12,
  45         BT_CONNECTION_STATUS_IS_ENDED = 104,
  46 };
  47
  48 /* Returns the "downstream" input port. */
  49 extern struct bt_port *bt_connection_get_downstream_port(
  50                 struct bt_connection *connection);
  51 /* Returns the "upstream" output port. */
  52 extern struct bt_port *bt_connection_get_upstream_port(
  53                 struct bt_connection *connection);
  54
  55 extern bt_bool bt_connection_is_ended(struct bt_connection *connection);
  56
  57 #ifdef __cplusplus
  58 }
  59 #endif
  60
  61 #endif /* BABELTRACE_GRAPH_CONNECTION_H */