[babeltrace.git] / src / lib / graph / message / event.c

/*
 * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#define BT_LOG_TAG "LIB/MSG-EVENT"
#include "lib/logging.h"

#include "common/assert.h"
#include "lib/assert-pre.h"
#include "lib/assert-post.h"
#include "compat/compiler.h"
#include "lib/object.h"
#include <babeltrace2/trace-ir/event.h>
#include "lib/trace-ir/event.h"
#include "lib/trace-ir/event-class.h"
#include "lib/trace-ir/stream-class.h"
#include <babeltrace2/trace-ir/trace.h>
#include "lib/trace-ir/clock-snapshot.h"
#include "lib/graph/graph.h"
#include <babeltrace2/graph/message.h>
#include <babeltrace2/types.h>
#include <stdbool.h>
#include <inttypes.h>

#include "event.h"

static inline bool event_class_has_trace(struct bt_event_class *event_class)
{
	struct bt_stream_class *stream_class;

	stream_class = bt_event_class_borrow_stream_class_inline(event_class);
	BT_ASSERT_DBG(stream_class);
	return bt_stream_class_borrow_trace_class(stream_class);
}

BT_HIDDEN
struct bt_message *bt_message_event_new(
		struct bt_graph *graph)
{
	struct bt_message_event *message = NULL;

	message = g_new0(struct bt_message_event, 1);
	if (!message) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Failed to allocate one event message.");
		goto error;
	}

	bt_message_init(&message->parent, BT_MESSAGE_TYPE_EVENT,
		(bt_object_release_func) bt_message_event_recycle, graph);
	goto end;

error:
	BT_OBJECT_PUT_REF_AND_RESET(message);

end:
	return (void *) message;
}

static inline
struct bt_message *create_event_message(
		struct bt_self_message_iterator *self_msg_iter,
		const struct bt_event_class *c_event_class,
		const struct bt_packet *c_packet,
		const struct bt_stream *c_stream, bool with_cs,
		uint64_t raw_value)
{
	struct bt_message_iterator *msg_iter =
		(void *) self_msg_iter;
	struct bt_message_event *message = NULL;
	struct bt_event_class *event_class = (void *) c_event_class;
	struct bt_stream_class *stream_class;
	struct bt_packet *packet = (void *) c_packet;
	struct bt_stream *stream = (void *) c_stream;
	struct bt_event *event;

	BT_ASSERT_DBG(stream);
	BT_ASSERT_PRE_NON_NULL(msg_iter, "Message iterator");
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	BT_ASSERT_PRE(event_class_has_trace(event_class),
		"Event class is not part of a trace: %!+E", event_class);
	stream_class = bt_event_class_borrow_stream_class_inline(event_class);
	BT_ASSERT_DBG(stream_class);
	BT_ASSERT_PRE((with_cs && stream_class->default_clock_class) ||
		(!with_cs && !stream_class->default_clock_class),
		"Creating an event message with a default clock snapshot, but without "
		"a default clock class, or without a default clock snapshot, "
		"but with a default clock class: ",
		"%![ec-]+E, %![sc-]+S, with-cs=%d, "
		"cs-val=%" PRIu64,
		event_class, stream_class, with_cs, raw_value);
	BT_LIB_LOGD("Creating event message object: %![ec-]+E", event_class);
	event = bt_event_create(event_class, packet, stream);
	if (G_UNLIKELY(!event)) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Cannot create event from event class: "
			"%![ec-]+E", event_class);
		goto error;
	}

	/*
	 * Create message from pool _after_ we have everything
	 * (in this case, a valid event object) so that we never have an
	 * error condition with a non-NULL message object.
	 * Otherwise:
	 *
	 * * We cannot recycle the message on error because
	 *   bt_message_event_recycle() expects a complete
	 *   message (and the event or clock class priority map
	 *   object could be unset).
	 *
	 * * We cannot destroy the message because we would need
	 *   to notify the graph (pool owner) so that it removes the
	 *   message from its message array.
	 */
	message = (void *) bt_message_create_from_pool(
		&msg_iter->graph->event_msg_pool, msg_iter->graph);
	if (G_UNLIKELY(!message)) {
		/* bt_message_create_from_pool() logs errors */
		goto error;
	}

	if (with_cs) {
		BT_ASSERT_DBG(stream_class->default_clock_class);
		message->default_cs = bt_clock_snapshot_create(
			stream_class->default_clock_class);
		if (!message->default_cs) {
			goto error;
		}

		bt_clock_snapshot_set_raw_value(message->default_cs, raw_value);
	}

	BT_ASSERT_DBG(!message->event);
	message->event = event;

	if (packet) {
		bt_packet_set_is_frozen(packet, true);
	}

	bt_stream_freeze(stream);
	bt_event_class_freeze(event_class);
	BT_LIB_LOGD("Created event message object: "
		"%![msg-]+n, %![event-]+e", message, event);
	goto end;

error:
	BT_ASSERT(!message);
	bt_event_destroy(event);

end:
	return (void *) message;
}

struct bt_message *bt_message_event_create(
		struct bt_self_message_iterator *msg_iter,
		const struct bt_event_class *event_class,
		const struct bt_stream *stream)
{
	BT_ASSERT_PRE_DEV_NO_ERROR();
	BT_ASSERT_PRE_NON_NULL(stream, "Stream");
	return create_event_message(msg_iter, event_class, NULL, stream, false, 0);
}

struct bt_message *bt_message_event_create_with_packet(
		struct bt_self_message_iterator *msg_iter,
		const struct bt_event_class *event_class,
		const struct bt_packet *packet)
{
	BT_ASSERT_PRE_DEV_NO_ERROR();
	BT_ASSERT_PRE_NON_NULL(packet, "Packet");
	return create_event_message(msg_iter, event_class, packet,
		packet->stream, false, 0);
}

struct bt_message *bt_message_event_create_with_default_clock_snapshot(
		struct bt_self_message_iterator *msg_iter,
		const struct bt_event_class *event_class,
		const struct bt_stream *stream,
		uint64_t raw_value)
{
	BT_ASSERT_PRE_DEV_NO_ERROR();
	BT_ASSERT_PRE_NON_NULL(stream, "Stream");
	return create_event_message(msg_iter, event_class, NULL, stream,
		true, raw_value);
}

struct bt_message *
bt_message_event_create_with_packet_and_default_clock_snapshot(
		struct bt_self_message_iterator *msg_iter,
		const struct bt_event_class *event_class,
		const struct bt_packet *packet,
		uint64_t raw_value)
{
	BT_ASSERT_PRE_DEV_NO_ERROR();
	BT_ASSERT_PRE_NON_NULL(packet, "Packet");
	return create_event_message(msg_iter, event_class, packet,
		packet->stream, true, raw_value);
}

BT_HIDDEN
void bt_message_event_destroy(struct bt_message *msg)
{
	struct bt_message_event *event_msg = (void *) msg;

	BT_LIB_LOGD("Destroying event message: %!+n", msg);

	if (event_msg->event) {
		BT_LIB_LOGD("Recycling event: %!+e", event_msg->event);
		bt_event_recycle(event_msg->event);
		event_msg->event = NULL;
	}

	if (event_msg->default_cs) {
		bt_clock_snapshot_recycle(event_msg->default_cs);
		event_msg->default_cs = NULL;
	}

	g_free(msg);
}

BT_HIDDEN
void bt_message_event_recycle(struct bt_message *msg)
{
	struct bt_message_event *event_msg = (void *) msg;
	struct bt_graph *graph;

	BT_ASSERT_DBG(event_msg);

	if (G_UNLIKELY(!msg->graph)) {
		bt_message_event_destroy(msg);
		return;
	}

	BT_LIB_LOGD("Recycling event message: %![msg-]+n, %![event-]+e",
		msg, event_msg->event);
	bt_message_reset(msg);
	BT_ASSERT_DBG(event_msg->event);
	bt_event_recycle(event_msg->event);
	event_msg->event = NULL;

	if (event_msg->default_cs) {
		bt_clock_snapshot_recycle(event_msg->default_cs);
		event_msg->default_cs = NULL;
	}

	graph = msg->graph;
	msg->graph = NULL;
	bt_object_pool_recycle_object(&graph->event_msg_pool, msg);
}

static inline
struct bt_event *borrow_event(struct bt_message *message)
{
	struct bt_message_event *event_message;

	BT_ASSERT_PRE_DEV_NON_NULL(message, "Message");
	BT_ASSERT_PRE_DEV_MSG_IS_TYPE(message, BT_MESSAGE_TYPE_EVENT);
	event_message = container_of(message,
			struct bt_message_event, parent);
	return event_message->event;
}

struct bt_event *bt_message_event_borrow_event(
		struct bt_message *message)
{
	return borrow_event(message);
}

const struct bt_event *bt_message_event_borrow_event_const(
		const struct bt_message *message)
{
	return borrow_event((void *) message);
}

const struct bt_clock_snapshot *
bt_message_event_borrow_default_clock_snapshot_const(
		const struct bt_message *msg)
{
	struct bt_message_event *event_msg = (void *) msg;
	struct bt_stream_class *stream_class;

	BT_ASSERT_PRE_DEV_NON_NULL(msg, "Message");
	BT_ASSERT_PRE_DEV_MSG_IS_TYPE(msg, BT_MESSAGE_TYPE_EVENT);
	stream_class = bt_event_class_borrow_stream_class_inline(
		event_msg->event->class);
	BT_ASSERT_DBG(stream_class);
	BT_ASSERT_PRE_DEV(stream_class->default_clock_class,
		"Message's stream's class has no default clock class: "
		"%![msg-]+n, %![sc-]+S", msg, stream_class);
	return event_msg->default_cs;
}

const bt_clock_class *
bt_message_event_borrow_stream_class_default_clock_class_const(
		const bt_message *msg)
{
	struct bt_message_event *event_msg = (void *) msg;
	struct bt_stream_class *stream_class;

	BT_ASSERT_PRE_DEV_NON_NULL(msg, "Message");
	BT_ASSERT_PRE_DEV_MSG_IS_TYPE(msg, BT_MESSAGE_TYPE_EVENT);
	stream_class = bt_event_class_borrow_stream_class_inline(
		event_msg->event->class);
	BT_ASSERT_DBG(stream_class);
	return stream_class->default_clock_class;
}
Commit	Line	Data
d6e69534 PP	1	/*
	2	* Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
	3	* Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
	4	*
	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:
	11	*
	12	* The above copyright notice and this permission notice shall be included in
	13	* all copies or substantial portions of the Software.
	14	*
	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
	21	* SOFTWARE.
	22	*/
	23
350ad6c1	24	#define BT_LOG_TAG "LIB/MSG-EVENT"
c2d9d9cf	25	#include "lib/logging.h"
d6e69534	26
578e048b MJ	27	#include "common/assert.h"
578e048b MJ	28	#include "lib/assert-pre.h"
51375aa9	29	#include "lib/assert-post.h"
578e048b MJ	30	#include "compat/compiler.h"
578e048b MJ	31	#include "lib/object.h"
3fadfbc0	32	#include <babeltrace2/trace-ir/event.h>
578e048b MJ	33	#include "lib/trace-ir/event.h"
	34	#include "lib/trace-ir/event-class.h"
	35	#include "lib/trace-ir/stream-class.h"
3fadfbc0	36	#include <babeltrace2/trace-ir/trace.h>
578e048b MJ	37	#include "lib/trace-ir/clock-snapshot.h"
578e048b MJ	38	#include "lib/graph/graph.h"
43c59509	39	#include <babeltrace2/graph/message.h>
3fadfbc0	40	#include <babeltrace2/types.h>
d6e69534 PP	41	#include <stdbool.h>
	42	#include <inttypes.h>
	43
578e048b MJ	44	#include "event.h"
578e048b MJ	45
d6e69534 PP	46	static inline bool event_class_has_trace(struct bt_event_class *event_class)
	47	{
	48	struct bt_stream_class *stream_class;
	49
33931ab8	50	stream_class = bt_event_class_borrow_stream_class_inline(event_class);
98b15851	51	BT_ASSERT_DBG(stream_class);
5084732e	52	return bt_stream_class_borrow_trace_class(stream_class);
d6e69534 PP	53	}
	54
	55	BT_HIDDEN
	56	struct bt_message *bt_message_event_new(
	57	struct bt_graph *graph)
	58	{
	59	struct bt_message_event *message = NULL;
	60
	61	message = g_new0(struct bt_message_event, 1);
	62	if (!message) {
870631a2 PP	63	BT_LIB_LOGE_APPEND_CAUSE(
870631a2 PP	64	"Failed to allocate one event message.");
d6e69534 PP	65	goto error;
	66	}
	67
	68	bt_message_init(&message->parent, BT_MESSAGE_TYPE_EVENT,
	69	(bt_object_release_func) bt_message_event_recycle, graph);
	70	goto end;
	71
	72	error:
	73	BT_OBJECT_PUT_REF_AND_RESET(message);
	74
	75	end:
	76	return (void *) message;
	77	}
	78
2c091c04 PP	79	static inline
2c091c04 PP	80	struct bt_message *create_event_message(
d6e69534	81	struct bt_self_message_iterator *self_msg_iter,
58085ca4	82	const struct bt_event_class *c_event_class,
26fc5aed PP	83	const struct bt_packet *c_packet,
26fc5aed PP	84	const struct bt_stream *c_stream, bool with_cs,
2c091c04	85	uint64_t raw_value)
d6e69534	86	{
9a2c8b8e	87	struct bt_message_iterator *msg_iter =
d6e69534 PP	88	(void *) self_msg_iter;
d6e69534 PP	89	struct bt_message_event *message = NULL;
58085ca4	90	struct bt_event_class event_class = (void ) c_event_class;
2c091c04	91	struct bt_stream_class *stream_class;
58085ca4	92	struct bt_packet packet = (void ) c_packet;
26fc5aed	93	struct bt_stream stream = (void ) c_stream;
d6e69534 PP	94	struct bt_event *event;
d6e69534 PP	95
98b15851	96	BT_ASSERT_DBG(stream);
d6e69534 PP	97	BT_ASSERT_PRE_NON_NULL(msg_iter, "Message iterator");
d6e69534 PP	98	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
d6e69534 PP	99	BT_ASSERT_PRE(event_class_has_trace(event_class),
d6e69534 PP	100	"Event class is not part of a trace: %!+E", event_class);
2c091c04	101	stream_class = bt_event_class_borrow_stream_class_inline(event_class);
98b15851	102	BT_ASSERT_DBG(stream_class);
2c091c04 PP	103	BT_ASSERT_PRE((with_cs && stream_class->default_clock_class) \|\|
	104	(!with_cs && !stream_class->default_clock_class),
	105	"Creating an event message with a default clock snapshot, but without "
	106	"a default clock class, or without a default clock snapshot, "
	107	"but with a default clock class: ",
	108	"%![ec-]+E, %![sc-]+S, with-cs=%d, "
	109	"cs-val=%" PRIu64,
	110	event_class, stream_class, with_cs, raw_value);
	111	BT_LIB_LOGD("Creating event message object: %![ec-]+E", event_class);
26fc5aed	112	event = bt_event_create(event_class, packet, stream);
91d81473	113	if (G_UNLIKELY(!event)) {
870631a2 PP	114	BT_LIB_LOGE_APPEND_CAUSE(
870631a2 PP	115	"Cannot create event from event class: "
d6e69534 PP	116	"%![ec-]+E", event_class);
	117	goto error;
	118	}
	119
	120	/*
	121	* Create message from pool _after_ we have everything
	122	* (in this case, a valid event object) so that we never have an
	123	* error condition with a non-NULL message object.
	124	* Otherwise:
	125	*
	126	* * We cannot recycle the message on error because
	127	* bt_message_event_recycle() expects a complete
	128	* message (and the event or clock class priority map
	129	* object could be unset).
	130	*
	131	* * We cannot destroy the message because we would need
	132	* to notify the graph (pool owner) so that it removes the
	133	* message from its message array.
	134	*/
	135	message = (void *) bt_message_create_from_pool(
	136	&msg_iter->graph->event_msg_pool, msg_iter->graph);
91d81473	137	if (G_UNLIKELY(!message)) {
d6e69534 PP	138	/* bt_message_create_from_pool() logs errors */
	139	goto error;
	140	}
	141
2c091c04	142	if (with_cs) {
98b15851	143	BT_ASSERT_DBG(stream_class->default_clock_class);
2c091c04 PP	144	message->default_cs = bt_clock_snapshot_create(
	145	stream_class->default_clock_class);
	146	if (!message->default_cs) {
	147	goto error;
	148	}
	149
	150	bt_clock_snapshot_set_raw_value(message->default_cs, raw_value);
	151	}
	152
98b15851	153	BT_ASSERT_DBG(!message->event);
d6e69534	154	message->event = event;
26fc5aed PP	155
	156	if (packet) {
	157	bt_packet_set_is_frozen(packet, true);
	158	}
	159
	160	bt_stream_freeze(stream);
d6e69534 PP	161	bt_event_class_freeze(event_class);
	162	BT_LIB_LOGD("Created event message object: "
	163	"%![msg-]+n, %![event-]+e", message, event);
	164	goto end;
	165
	166	error:
	167	BT_ASSERT(!message);
	168	bt_event_destroy(event);
	169
	170	end:
	171	return (void *) message;
	172	}
	173
2c091c04	174	struct bt_message *bt_message_event_create(
26fc5aed PP	175	struct bt_self_message_iterator *msg_iter,
	176	const struct bt_event_class *event_class,
	177	const struct bt_stream *stream)
	178	{
17f3083a	179	BT_ASSERT_PRE_DEV_NO_ERROR();
26fc5aed PP	180	BT_ASSERT_PRE_NON_NULL(stream, "Stream");
	181	return create_event_message(msg_iter, event_class, NULL, stream, false, 0);
	182	}
	183
	184	struct bt_message *bt_message_event_create_with_packet(
2c091c04 PP	185	struct bt_self_message_iterator *msg_iter,
	186	const struct bt_event_class *event_class,
	187	const struct bt_packet *packet)
	188	{
17f3083a	189	BT_ASSERT_PRE_DEV_NO_ERROR();
26fc5aed PP	190	BT_ASSERT_PRE_NON_NULL(packet, "Packet");
	191	return create_event_message(msg_iter, event_class, packet,
	192	packet->stream, false, 0);
2c091c04 PP	193	}
	194
	195	struct bt_message *bt_message_event_create_with_default_clock_snapshot(
26fc5aed PP	196	struct bt_self_message_iterator *msg_iter,
	197	const struct bt_event_class *event_class,
	198	const struct bt_stream *stream,
	199	uint64_t raw_value)
	200	{
17f3083a	201	BT_ASSERT_PRE_DEV_NO_ERROR();
26fc5aed PP	202	BT_ASSERT_PRE_NON_NULL(stream, "Stream");
	203	return create_event_message(msg_iter, event_class, NULL, stream,
	204	true, raw_value);
	205	}
	206
	207	struct bt_message *
	208	bt_message_event_create_with_packet_and_default_clock_snapshot(
2c091c04 PP	209	struct bt_self_message_iterator *msg_iter,
	210	const struct bt_event_class *event_class,
	211	const struct bt_packet *packet,
	212	uint64_t raw_value)
	213	{
17f3083a	214	BT_ASSERT_PRE_DEV_NO_ERROR();
26fc5aed	215	BT_ASSERT_PRE_NON_NULL(packet, "Packet");
2c091c04	216	return create_event_message(msg_iter, event_class, packet,
26fc5aed	217	packet->stream, true, raw_value);
2c091c04 PP	218	}
2c091c04 PP	219
d6e69534 PP	220	BT_HIDDEN
	221	void bt_message_event_destroy(struct bt_message *msg)
	222	{
	223	struct bt_message_event event_msg = (void ) msg;
	224
	225	BT_LIB_LOGD("Destroying event message: %!+n", msg);
	226
	227	if (event_msg->event) {
	228	BT_LIB_LOGD("Recycling event: %!+e", event_msg->event);
	229	bt_event_recycle(event_msg->event);
	230	event_msg->event = NULL;
	231	}
	232
2c091c04 PP	233	if (event_msg->default_cs) {
	234	bt_clock_snapshot_recycle(event_msg->default_cs);
	235	event_msg->default_cs = NULL;
	236	}
	237
d6e69534 PP	238	g_free(msg);
	239	}
	240
	241	BT_HIDDEN
	242	void bt_message_event_recycle(struct bt_message *msg)
	243	{
	244	struct bt_message_event event_msg = (void ) msg;
	245	struct bt_graph *graph;
	246
98b15851	247	BT_ASSERT_DBG(event_msg);
d6e69534	248
91d81473	249	if (G_UNLIKELY(!msg->graph)) {
d6e69534 PP	250	bt_message_event_destroy(msg);
	251	return;
	252	}
	253
	254	BT_LIB_LOGD("Recycling event message: %![msg-]+n, %![event-]+e",
	255	msg, event_msg->event);
	256	bt_message_reset(msg);
98b15851	257	BT_ASSERT_DBG(event_msg->event);
d6e69534 PP	258	bt_event_recycle(event_msg->event);
d6e69534 PP	259	event_msg->event = NULL;
2c091c04 PP	260
	261	if (event_msg->default_cs) {
	262	bt_clock_snapshot_recycle(event_msg->default_cs);
	263	event_msg->default_cs = NULL;
	264	}
	265
d6e69534 PP	266	graph = msg->graph;
	267	msg->graph = NULL;
	268	bt_object_pool_recycle_object(&graph->event_msg_pool, msg);
	269	}
	270
	271	static inline
	272	struct bt_event borrow_event(struct bt_message message)
	273	{
	274	struct bt_message_event *event_message;
	275
bdb288b3 PP	276	BT_ASSERT_PRE_DEV_NON_NULL(message, "Message");
bdb288b3 PP	277	BT_ASSERT_PRE_DEV_MSG_IS_TYPE(message, BT_MESSAGE_TYPE_EVENT);
d6e69534 PP	278	event_message = container_of(message,
	279	struct bt_message_event, parent);
	280	return event_message->event;
	281	}
	282
	283	struct bt_event *bt_message_event_borrow_event(
	284	struct bt_message *message)
	285	{
	286	return borrow_event(message);
	287	}
	288
	289	const struct bt_event *bt_message_event_borrow_event_const(
	290	const struct bt_message *message)
	291	{
	292	return borrow_event((void *) message);
	293	}
2c091c04	294
0cbc2c33	295	const struct bt_clock_snapshot *
2c091c04	296	bt_message_event_borrow_default_clock_snapshot_const(
0cbc2c33	297	const struct bt_message *msg)
2c091c04 PP	298	{
	299	struct bt_message_event event_msg = (void ) msg;
	300	struct bt_stream_class *stream_class;
	301
bdb288b3 PP	302	BT_ASSERT_PRE_DEV_NON_NULL(msg, "Message");
bdb288b3 PP	303	BT_ASSERT_PRE_DEV_MSG_IS_TYPE(msg, BT_MESSAGE_TYPE_EVENT);
33931ab8	304	stream_class = bt_event_class_borrow_stream_class_inline(
2c091c04	305	event_msg->event->class);
98b15851	306	BT_ASSERT_DBG(stream_class);
bdb288b3	307	BT_ASSERT_PRE_DEV(stream_class->default_clock_class,
2c091c04 PP	308	"Message's stream's class has no default clock class: "
2c091c04 PP	309	"%![msg-]+n, %![sc-]+S", msg, stream_class);
0cbc2c33	310	return event_msg->default_cs;
2c091c04	311	}
33931ab8 PP	312
	313	const bt_clock_class *
	314	bt_message_event_borrow_stream_class_default_clock_class_const(
	315	const bt_message *msg)
	316	{
	317	struct bt_message_event event_msg = (void ) msg;
	318	struct bt_stream_class *stream_class;
	319
bdb288b3 PP	320	BT_ASSERT_PRE_DEV_NON_NULL(msg, "Message");
bdb288b3 PP	321	BT_ASSERT_PRE_DEV_MSG_IS_TYPE(msg, BT_MESSAGE_TYPE_EVENT);
33931ab8 PP	322	stream_class = bt_event_class_borrow_stream_class_inline(
33931ab8 PP	323	event_msg->event->class);
98b15851	324	BT_ASSERT_DBG(stream_class);
33931ab8 PP	325	return stream_class->default_clock_class;
33931ab8 PP	326	}