1 #ifndef BABELTRACE_GRAPH_NOTIFICATION_ITERATOR_INTERNAL_H
2 #define BABELTRACE_GRAPH_NOTIFICATION_ITERATOR_INTERNAL_H
5 * BabelTrace - Notification Iterator Internal
7 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #include <babeltrace/babeltrace-internal.h>
30 #include <babeltrace/object-internal.h>
31 #include <babeltrace/graph/connection.h>
32 #include <babeltrace/graph/notification.h>
33 #include <babeltrace/graph/notification-iterator.h>
34 #include <babeltrace/graph/private-connection-private-notification-iterator.h>
35 #include <babeltrace/types.h>
36 #include <babeltrace/assert-internal.h>
42 enum bt_notification_iterator_type
{
43 BT_NOTIFICATION_ITERATOR_TYPE_PRIVATE_CONNECTION
,
44 BT_NOTIFICATION_ITERATOR_TYPE_OUTPUT_PORT
,
47 enum bt_private_connection_notification_iterator_notif_type
{
48 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_EVENT
= (1U << 0),
49 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_INACTIVITY
= (1U << 1),
50 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_BEGIN
= (1U << 2),
51 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_END
= (1U << 3),
52 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_BEGIN
= (1U << 4),
53 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_END
= (1U << 5),
54 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_EVENTS
= (1U << 6),
55 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_PACKETS
= (1U << 7),
58 enum bt_private_connection_notification_iterator_state
{
59 /* Iterator is not initialized. */
60 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_NON_INITIALIZED
,
62 /* Iterator is active, not at the end yet, and not finalized. */
63 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ACTIVE
,
66 * Iterator is ended, not finalized yet: the "next" method
67 * returns BT_NOTIFICATION_ITERATOR_STATUS_END.
69 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ENDED
,
72 * Iterator is finalized, but not at the end yet. This means
73 * that the "next" method can still return queued notifications
74 * before returning the BT_NOTIFICATION_ITERATOR_STATUS_CANCELED
77 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED
,
80 * Iterator is finalized and ended: the "next" method always
81 * returns BT_NOTIFICATION_ITERATOR_STATUS_CANCELED.
83 BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED
,
86 struct bt_notification_iterator
{
87 struct bt_object base
;
88 enum bt_notification_iterator_type type
;
91 struct bt_notification_iterator_private_connection
{
92 struct bt_notification_iterator base
;
93 struct bt_component
*upstream_component
; /* Weak */
94 struct bt_port
*upstream_port
; /* Weak */
95 struct bt_connection
*connection
; /* Weak */
96 struct bt_graph
*graph
; /* Weak */
99 * This hash table keeps the state of a stream as viewed by
100 * this notification iterator. This is used to, in developer
103 * * Automatically enqueue "stream begin", "packet begin",
104 * "packet end", and "stream end" notifications depending
105 * on the stream's state and on the next notification returned
106 * by the upstream component.
108 * * Make sure that, once the notification iterator has seen a
109 * "stream end" notification for a given stream, no other
110 * notifications which refer to this stream can be delivered
113 * The key (struct bt_stream *) is not owned by this. The
114 * value is an allocated state structure.
116 GHashTable
*stream_states
;
118 enum bt_private_connection_notification_iterator_state state
;
122 struct bt_notification_iterator_output_port
{
123 struct bt_notification_iterator base
;
124 struct bt_graph
*graph
; /* Owned by this */
125 struct bt_component
*colander
; /* Owned by this */
127 /* Only used temporarily: should always be NULL */
128 struct bt_notification
*notif
;
132 struct bt_private_connection_private_notification_iterator
*
133 bt_private_connection_private_notification_iterator_from_notification_iterator(
134 struct bt_notification_iterator_private_connection
*iterator
)
136 return (void *) iterator
;
140 enum bt_connection_status
bt_private_connection_notification_iterator_create(
141 struct bt_component
*upstream_comp
,
142 struct bt_port
*upstream_port
,
143 struct bt_connection
*connection
,
144 struct bt_notification_iterator_private_connection
**iterator
);
147 void bt_private_connection_notification_iterator_finalize(
148 struct bt_notification_iterator_private_connection
*iterator
);
151 void bt_private_connection_notification_iterator_set_connection(
152 struct bt_notification_iterator_private_connection
*iterator
,
153 struct bt_connection
*connection
);
156 const char *bt_notification_iterator_status_string(
157 enum bt_notification_iterator_status status
)
160 case BT_NOTIFICATION_ITERATOR_STATUS_CANCELED
:
161 return "BT_NOTIFICATION_ITERATOR_STATUS_CANCELED";
162 case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN
:
163 return "BT_NOTIFICATION_ITERATOR_STATUS_AGAIN";
164 case BT_NOTIFICATION_ITERATOR_STATUS_END
:
165 return "BT_NOTIFICATION_ITERATOR_STATUS_END";
166 case BT_NOTIFICATION_ITERATOR_STATUS_OK
:
167 return "BT_NOTIFICATION_ITERATOR_STATUS_OK";
168 case BT_NOTIFICATION_ITERATOR_STATUS_INVALID
:
169 return "BT_NOTIFICATION_ITERATOR_STATUS_INVALID";
170 case BT_NOTIFICATION_ITERATOR_STATUS_ERROR
:
171 return "BT_NOTIFICATION_ITERATOR_STATUS_ERROR";
172 case BT_NOTIFICATION_ITERATOR_STATUS_NOMEM
:
173 return "BT_NOTIFICATION_ITERATOR_STATUS_NOMEM";
174 case BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED
:
175 return "BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED";
182 const char *bt_private_connection_notification_iterator_state_string(
183 enum bt_private_connection_notification_iterator_state state
)
186 case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ACTIVE
:
187 return "BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ACTIVE";
188 case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ENDED
:
189 return "BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ENDED";
190 case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED
:
191 return "BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED";
192 case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED
:
193 return "BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED";
199 #endif /* BABELTRACE_GRAPH_NOTIFICATION_ITERATOR_INTERNAL_H */