| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com> |
| 5 | * Copyright 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 6 | */ |
| 7 | |
| 8 | #ifndef BABELTRACE_GRAPH_CONNECTION_INTERNAL_H |
| 9 | #define BABELTRACE_GRAPH_CONNECTION_INTERNAL_H |
| 10 | |
| 11 | #include <babeltrace2/graph/connection.h> |
| 12 | #include "lib/object.h" |
| 13 | #include "common/assert.h" |
| 14 | #include "common/macros.h" |
| 15 | #include <stdbool.h> |
| 16 | |
| 17 | #include "message/iterator.h" |
| 18 | |
| 19 | struct bt_graph; |
| 20 | |
| 21 | struct bt_connection { |
| 22 | /* |
| 23 | * The graph is a connection's parent and the connection is the parent |
| 24 | * of all iterators it has created. |
| 25 | */ |
| 26 | struct bt_object base; |
| 27 | /* |
| 28 | * Weak references are held to both ports. Their existence is guaranteed |
| 29 | * by the existence of the graph and thus, of their respective |
| 30 | * components. |
| 31 | */ |
| 32 | /* Downstream port. */ |
| 33 | struct bt_port *downstream_port; |
| 34 | /* Upstream port. */ |
| 35 | struct bt_port *upstream_port; |
| 36 | |
| 37 | /* |
| 38 | * Weak references to all the message iterators that were |
| 39 | * created on this connection. |
| 40 | */ |
| 41 | GPtrArray *iterators; |
| 42 | |
| 43 | bool notified_upstream_port_connected; |
| 44 | bool notified_downstream_port_connected; |
| 45 | bool notified_graph_ports_connected; |
| 46 | }; |
| 47 | |
| 48 | BT_HIDDEN |
| 49 | struct bt_connection *bt_connection_create(struct bt_graph *graph, |
| 50 | struct bt_port *upstream_port, |
| 51 | struct bt_port *downstream_port); |
| 52 | |
| 53 | BT_HIDDEN |
| 54 | void bt_connection_end(struct bt_connection *conn, bool try_remove_from_graph); |
| 55 | |
| 56 | BT_HIDDEN |
| 57 | void bt_connection_remove_iterator(struct bt_connection *conn, |
| 58 | struct bt_message_iterator *iterator); |
| 59 | |
| 60 | static inline |
| 61 | struct bt_graph *bt_connection_borrow_graph(struct bt_connection *conn) |
| 62 | { |
| 63 | BT_ASSERT_DBG(conn); |
| 64 | return (void *) conn->base.parent; |
| 65 | } |
| 66 | |
| 67 | #endif /* BABELTRACE_GRAPH_CONNECTION_INTERNAL_H */ |