2 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
3 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 #define BT_LOG_TAG "LIB/MSG-EVENT"
25 #include "lib/logging.h"
27 #include "common/assert.h"
28 #include "lib/assert-pre.h"
29 #include "lib/assert-post.h"
30 #include "compat/compiler.h"
31 #include "lib/object.h"
32 #include <babeltrace2/trace-ir/event.h>
33 #include "lib/trace-ir/event.h"
34 #include "lib/trace-ir/event-class.h"
35 #include "lib/trace-ir/stream-class.h"
36 #include <babeltrace2/trace-ir/trace.h>
37 #include "lib/trace-ir/clock-snapshot.h"
38 #include "lib/graph/graph.h"
39 #include <babeltrace2/graph/message-event-const.h>
40 #include <babeltrace2/graph/message-event.h>
41 #include <babeltrace2/types.h>
47 static inline bool event_class_has_trace(struct bt_event_class
*event_class
)
49 struct bt_stream_class
*stream_class
;
51 stream_class
= bt_event_class_borrow_stream_class_inline(event_class
);
52 BT_ASSERT_DBG(stream_class
);
53 return bt_stream_class_borrow_trace_class(stream_class
);
57 struct bt_message
*bt_message_event_new(
58 struct bt_graph
*graph
)
60 struct bt_message_event
*message
= NULL
;
62 message
= g_new0(struct bt_message_event
, 1);
64 BT_LIB_LOGE_APPEND_CAUSE(
65 "Failed to allocate one event message.");
69 bt_message_init(&message
->parent
, BT_MESSAGE_TYPE_EVENT
,
70 (bt_object_release_func
) bt_message_event_recycle
, graph
);
74 BT_OBJECT_PUT_REF_AND_RESET(message
);
77 return (void *) message
;
81 struct bt_message
*create_event_message(
82 struct bt_self_message_iterator
*self_msg_iter
,
83 const struct bt_event_class
*c_event_class
,
84 const struct bt_packet
*c_packet
,
85 const struct bt_stream
*c_stream
, bool with_cs
,
88 struct bt_message_iterator
*msg_iter
=
89 (void *) self_msg_iter
;
90 struct bt_message_event
*message
= NULL
;
91 struct bt_event_class
*event_class
= (void *) c_event_class
;
92 struct bt_stream_class
*stream_class
;
93 struct bt_packet
*packet
= (void *) c_packet
;
94 struct bt_stream
*stream
= (void *) c_stream
;
95 struct bt_event
*event
;
97 BT_ASSERT_DBG(stream
);
98 BT_ASSERT_PRE_NON_NULL(msg_iter
, "Message iterator");
99 BT_ASSERT_PRE_NON_NULL(event_class
, "Event class");
100 BT_ASSERT_PRE(event_class_has_trace(event_class
),
101 "Event class is not part of a trace: %!+E", event_class
);
102 stream_class
= bt_event_class_borrow_stream_class_inline(event_class
);
103 BT_ASSERT_DBG(stream_class
);
104 BT_ASSERT_PRE((with_cs
&& stream_class
->default_clock_class
) ||
105 (!with_cs
&& !stream_class
->default_clock_class
),
106 "Creating an event message with a default clock snapshot, but without "
107 "a default clock class, or without a default clock snapshot, "
108 "but with a default clock class: ",
109 "%![ec-]+E, %![sc-]+S, with-cs=%d, "
111 event_class
, stream_class
, with_cs
, raw_value
);
112 BT_LIB_LOGD("Creating event message object: %![ec-]+E", event_class
);
113 event
= bt_event_create(event_class
, packet
, stream
);
114 if (G_UNLIKELY(!event
)) {
115 BT_LIB_LOGE_APPEND_CAUSE(
116 "Cannot create event from event class: "
117 "%![ec-]+E", event_class
);
122 * Create message from pool _after_ we have everything
123 * (in this case, a valid event object) so that we never have an
124 * error condition with a non-NULL message object.
127 * * We cannot recycle the message on error because
128 * bt_message_event_recycle() expects a complete
129 * message (and the event or clock class priority map
130 * object could be unset).
132 * * We cannot destroy the message because we would need
133 * to notify the graph (pool owner) so that it removes the
134 * message from its message array.
136 message
= (void *) bt_message_create_from_pool(
137 &msg_iter
->graph
->event_msg_pool
, msg_iter
->graph
);
138 if (G_UNLIKELY(!message
)) {
139 /* bt_message_create_from_pool() logs errors */
144 BT_ASSERT_DBG(stream_class
->default_clock_class
);
145 message
->default_cs
= bt_clock_snapshot_create(
146 stream_class
->default_clock_class
);
147 if (!message
->default_cs
) {
151 bt_clock_snapshot_set_raw_value(message
->default_cs
, raw_value
);
154 BT_ASSERT_DBG(!message
->event
);
155 message
->event
= event
;
158 bt_packet_set_is_frozen(packet
, true);
161 bt_stream_freeze(stream
);
162 bt_event_class_freeze(event_class
);
163 BT_LIB_LOGD("Created event message object: "
164 "%![msg-]+n, %![event-]+e", message
, event
);
169 bt_event_destroy(event
);
172 return (void *) message
;
175 struct bt_message
*bt_message_event_create(
176 struct bt_self_message_iterator
*msg_iter
,
177 const struct bt_event_class
*event_class
,
178 const struct bt_stream
*stream
)
180 BT_ASSERT_PRE_DEV_NO_ERROR();
181 BT_ASSERT_PRE_NON_NULL(stream
, "Stream");
182 return create_event_message(msg_iter
, event_class
, NULL
, stream
, false, 0);
185 struct bt_message
*bt_message_event_create_with_packet(
186 struct bt_self_message_iterator
*msg_iter
,
187 const struct bt_event_class
*event_class
,
188 const struct bt_packet
*packet
)
190 BT_ASSERT_PRE_DEV_NO_ERROR();
191 BT_ASSERT_PRE_NON_NULL(packet
, "Packet");
192 return create_event_message(msg_iter
, event_class
, packet
,
193 packet
->stream
, false, 0);
196 struct bt_message
*bt_message_event_create_with_default_clock_snapshot(
197 struct bt_self_message_iterator
*msg_iter
,
198 const struct bt_event_class
*event_class
,
199 const struct bt_stream
*stream
,
202 BT_ASSERT_PRE_DEV_NO_ERROR();
203 BT_ASSERT_PRE_NON_NULL(stream
, "Stream");
204 return create_event_message(msg_iter
, event_class
, NULL
, stream
,
209 bt_message_event_create_with_packet_and_default_clock_snapshot(
210 struct bt_self_message_iterator
*msg_iter
,
211 const struct bt_event_class
*event_class
,
212 const struct bt_packet
*packet
,
215 BT_ASSERT_PRE_DEV_NO_ERROR();
216 BT_ASSERT_PRE_NON_NULL(packet
, "Packet");
217 return create_event_message(msg_iter
, event_class
, packet
,
218 packet
->stream
, true, raw_value
);
222 void bt_message_event_destroy(struct bt_message
*msg
)
224 struct bt_message_event
*event_msg
= (void *) msg
;
226 BT_LIB_LOGD("Destroying event message: %!+n", msg
);
228 if (event_msg
->event
) {
229 BT_LIB_LOGD("Recycling event: %!+e", event_msg
->event
);
230 bt_event_recycle(event_msg
->event
);
231 event_msg
->event
= NULL
;
234 if (event_msg
->default_cs
) {
235 bt_clock_snapshot_recycle(event_msg
->default_cs
);
236 event_msg
->default_cs
= NULL
;
243 void bt_message_event_recycle(struct bt_message
*msg
)
245 struct bt_message_event
*event_msg
= (void *) msg
;
246 struct bt_graph
*graph
;
248 BT_ASSERT_DBG(event_msg
);
250 if (G_UNLIKELY(!msg
->graph
)) {
251 bt_message_event_destroy(msg
);
255 BT_LIB_LOGD("Recycling event message: %![msg-]+n, %![event-]+e",
256 msg
, event_msg
->event
);
257 bt_message_reset(msg
);
258 BT_ASSERT_DBG(event_msg
->event
);
259 bt_event_recycle(event_msg
->event
);
260 event_msg
->event
= NULL
;
262 if (event_msg
->default_cs
) {
263 bt_clock_snapshot_recycle(event_msg
->default_cs
);
264 event_msg
->default_cs
= NULL
;
269 bt_object_pool_recycle_object(&graph
->event_msg_pool
, msg
);
273 struct bt_event
*borrow_event(struct bt_message
*message
)
275 struct bt_message_event
*event_message
;
277 BT_ASSERT_PRE_DEV_NON_NULL(message
, "Message");
278 BT_ASSERT_PRE_DEV_MSG_IS_TYPE(message
, BT_MESSAGE_TYPE_EVENT
);
279 event_message
= container_of(message
,
280 struct bt_message_event
, parent
);
281 return event_message
->event
;
284 struct bt_event
*bt_message_event_borrow_event(
285 struct bt_message
*message
)
287 return borrow_event(message
);
290 const struct bt_event
*bt_message_event_borrow_event_const(
291 const struct bt_message
*message
)
293 return borrow_event((void *) message
);
296 const struct bt_clock_snapshot
*
297 bt_message_event_borrow_default_clock_snapshot_const(
298 const struct bt_message
*msg
)
300 struct bt_message_event
*event_msg
= (void *) msg
;
301 struct bt_stream_class
*stream_class
;
303 BT_ASSERT_PRE_DEV_NON_NULL(msg
, "Message");
304 BT_ASSERT_PRE_DEV_MSG_IS_TYPE(msg
, BT_MESSAGE_TYPE_EVENT
);
305 stream_class
= bt_event_class_borrow_stream_class_inline(
306 event_msg
->event
->class);
307 BT_ASSERT_DBG(stream_class
);
308 BT_ASSERT_PRE_DEV(stream_class
->default_clock_class
,
309 "Message's stream's class has no default clock class: "
310 "%![msg-]+n, %![sc-]+S", msg
, stream_class
);
311 return event_msg
->default_cs
;
314 const bt_clock_class
*
315 bt_message_event_borrow_stream_class_default_clock_class_const(
316 const bt_message
*msg
)
318 struct bt_message_event
*event_msg
= (void *) msg
;
319 struct bt_stream_class
*stream_class
;
321 BT_ASSERT_PRE_DEV_NON_NULL(msg
, "Message");
322 BT_ASSERT_PRE_DEV_MSG_IS_TYPE(msg
, BT_MESSAGE_TYPE_EVENT
);
323 stream_class
= bt_event_class_borrow_stream_class_inline(
324 event_msg
->event
->class);
325 BT_ASSERT_DBG(stream_class
);
326 return stream_class
->default_clock_class
;
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