[babeltrace.git] / lib / trace-ir / event-class.c

/*
 * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
 *
 * Author: 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 "EVENT-CLASS"
#include <babeltrace/lib-logging-internal.h>

#include <babeltrace/assert-pre-internal.h>
#include <babeltrace/trace-ir/clock-value-internal.h>
#include <babeltrace/trace-ir/fields-internal.h>
#include <babeltrace/trace-ir/field-classes.h>
#include <babeltrace/trace-ir/field-classes-internal.h>
#include <babeltrace/trace-ir/private-event-class.h>
#include <babeltrace/trace-ir/event-class.h>
#include <babeltrace/trace-ir/event-class-internal.h>
#include <babeltrace/trace-ir/event-internal.h>
#include <babeltrace/trace-ir/private-stream-class.h>
#include <babeltrace/trace-ir/stream-class.h>
#include <babeltrace/trace-ir/stream-class-internal.h>
#include <babeltrace/trace-ir/trace-internal.h>
#include <babeltrace/trace-ir/utils-internal.h>
#include <babeltrace/trace-ir/resolve-field-path-internal.h>
#include <babeltrace/object.h>
#include <babeltrace/trace-ir/attributes-internal.h>
#include <babeltrace/compiler-internal.h>
#include <babeltrace/endian-internal.h>
#include <babeltrace/types.h>
#include <babeltrace/values-internal.h>
#include <babeltrace/assert-internal.h>
#include <inttypes.h>
#include <stdlib.h>

#define BT_ASSERT_PRE_EVENT_CLASS_HOT(_ec) \
	BT_ASSERT_PRE_HOT(((struct bt_event_class *) (_ec)),		\
		"Event class", ": %!+E", (_ec))

static
void destroy_event_class(struct bt_object *obj)
{
	struct bt_event_class *event_class = (void *) obj;

	BT_LIB_LOGD("Destroying event class: %!+E", event_class);

	if (event_class->name.str) {
		g_string_free(event_class->name.str, TRUE);
		event_class->name.str = NULL;
	}

	if (event_class->emf_uri.str) {
		g_string_free(event_class->emf_uri.str, TRUE);
		event_class->emf_uri.str = NULL;
	}

	BT_LOGD_STR("Putting context field classe.");
	BT_OBJECT_PUT_REF_AND_RESET(event_class->specific_context_fc);
	BT_LOGD_STR("Putting payload field classe.");
	BT_OBJECT_PUT_REF_AND_RESET(event_class->payload_fc);
	bt_object_pool_finalize(&event_class->event_pool);
	g_free(obj);
}

static
void free_event(struct bt_event *event,
		struct bt_event_class *event_class)
{
	bt_event_destroy(event);
}

BT_ASSERT_PRE_FUNC
static
bool event_class_id_is_unique(struct bt_stream_class *stream_class, uint64_t id)
{
	uint64_t i;
	bool is_unique = true;

	for (i = 0; i < stream_class->event_classes->len; i++) {
		struct bt_event_class *ec =
			stream_class->event_classes->pdata[i];

		if (ec->id == id) {
			is_unique = false;
			goto end;
		}
	}

end:
	return is_unique;
}

static
struct bt_event_class *create_event_class_with_id(
		struct bt_stream_class *stream_class, uint64_t id)
{
	int ret;
	struct bt_event_class *event_class;

	BT_ASSERT(stream_class);
	BT_ASSERT_PRE(event_class_id_is_unique(stream_class, id),
		"Duplicate event class ID: %![sc-]+S, id=%" PRIu64,
		stream_class, id);
	BT_LIB_LOGD("Creating event class object: %![sc-]+S, id=%" PRIu64,
		stream_class, id);
	event_class = g_new0(struct bt_event_class, 1);
	if (!event_class) {
		BT_LOGE_STR("Failed to allocate one event class.");
		goto error;
	}

	bt_object_init_shared_with_parent(&event_class->base,
		destroy_event_class);
	event_class->id = id;
	bt_property_uint_init(&event_class->log_level,
			BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE, 0);
	event_class->name.str = g_string_new(NULL);
	if (!event_class->name.str) {
		BT_LOGE_STR("Failed to allocate a GString.");
		ret = -1;
		goto end;
	}

	event_class->emf_uri.str = g_string_new(NULL);
	if (!event_class->emf_uri.str) {
		BT_LOGE_STR("Failed to allocate a GString.");
		ret = -1;
		goto end;
	}

	ret = bt_object_pool_initialize(&event_class->event_pool,
		(bt_object_pool_new_object_func) bt_event_new,
		(bt_object_pool_destroy_object_func) free_event,
		event_class);
	if (ret) {
		BT_LOGE("Failed to initialize event pool: ret=%d",
			ret);
		goto error;
	}

	bt_object_set_parent(&event_class->base, &stream_class->base);
	g_ptr_array_add(stream_class->event_classes, event_class);
	bt_stream_class_freeze(stream_class);
	BT_LIB_LOGD("Created event class object: %!+E", event_class);
	goto end;

error:
	BT_OBJECT_PUT_REF_AND_RESET(event_class);

end:
	return event_class;
}

struct bt_private_event_class *bt_private_event_class_create(
		struct bt_private_stream_class *priv_stream_class)
{
	struct bt_stream_class *stream_class = (void *) priv_stream_class;

	BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
	BT_ASSERT_PRE(stream_class->assigns_automatic_event_class_id,
		"Stream class does not automatically assigns event class IDs: "
		"%![sc-]+S", stream_class);
	return (void *) create_event_class_with_id((void *) stream_class,
		(uint64_t) stream_class->event_classes->len);
}

struct bt_private_event_class *bt_private_event_class_create_with_id(
		struct bt_private_stream_class *priv_stream_class, uint64_t id)
{
	struct bt_stream_class *stream_class = (void *) priv_stream_class;

	BT_ASSERT_PRE(!stream_class->assigns_automatic_event_class_id,
		"Stream class automatically assigns event class IDs: "
		"%![sc-]+S", stream_class);
	return (void *) create_event_class_with_id((void *) stream_class, id);
}

const char *bt_event_class_get_name(struct bt_event_class *event_class)
{
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	return event_class->name.value;
}

int bt_private_event_class_set_name(struct bt_private_event_class *priv_event_class,
		const char *name)
{
	struct bt_event_class *event_class = (void *) priv_event_class;

	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	BT_ASSERT_PRE_NON_NULL(name, "Name");
	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	g_string_assign(event_class->name.str, name);
	event_class->name.value = event_class->name.str->str;
	BT_LIB_LOGV("Set event class's name: %!+E", event_class);
	return 0;
}

uint64_t bt_event_class_get_id(struct bt_event_class *event_class)
{
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	return event_class->id;
}

enum bt_property_availability bt_event_class_get_log_level(
		struct bt_event_class *event_class,
		enum bt_event_class_log_level *log_level)
{
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	BT_ASSERT_PRE_NON_NULL(log_level, "Log level (output)");
	*log_level = (enum bt_event_class_log_level)
		event_class->log_level.value;
	return event_class->log_level.base.avail;
}

void bt_private_event_class_set_log_level(
		struct bt_private_event_class *priv_event_class,
		enum bt_event_class_log_level log_level)
{
	struct bt_event_class *event_class = (void *) priv_event_class;

	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	bt_property_uint_set(&event_class->log_level,
		(uint64_t) log_level);
	BT_LIB_LOGV("Set event class's log level: %!+E", event_class);
}

const char *bt_event_class_get_emf_uri(struct bt_event_class *event_class)
{
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	return event_class->emf_uri.value;
}

int bt_private_event_class_set_emf_uri(
		struct bt_private_event_class *priv_event_class,
		const char *emf_uri)
{
	struct bt_event_class *event_class = (void *) priv_event_class;

	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	BT_ASSERT_PRE_NON_NULL(emf_uri, "EMF URI");
	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	g_string_assign(event_class->emf_uri.str, emf_uri);
	event_class->emf_uri.value = event_class->emf_uri.str->str;
	BT_LIB_LOGV("Set event class's EMF URI: %!+E", event_class);
	return 0;
}

struct bt_stream_class *bt_event_class_borrow_stream_class(
		struct bt_event_class *event_class)
{
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	return bt_event_class_borrow_stream_class_inline(event_class);
}

struct bt_private_stream_class *
bt_private_event_class_borrow_stream_class(
		struct bt_private_event_class *event_class)
{
	return (void *) bt_event_class_borrow_stream_class(
		(void *) event_class);
}

struct bt_field_class *bt_event_class_borrow_specific_context_field_class(
		struct bt_event_class *event_class)
{
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	return event_class->specific_context_fc;
}

struct bt_private_field_class *
bt_private_event_class_borrow_specific_context_field_class(
		struct bt_private_event_class *event_class)
{
	return (void *) bt_event_class_borrow_specific_context_field_class(
		(void *) event_class);
}

int bt_private_event_class_set_specific_context_field_class(
		struct bt_private_event_class *priv_event_class,
		struct bt_private_field_class *priv_field_class)
{
	int ret;
	struct bt_event_class *event_class = (void *) priv_event_class;
	struct bt_field_class *field_class = (void *) priv_field_class;
	struct bt_stream_class *stream_class;
	struct bt_trace *trace;
	struct bt_resolve_field_path_context resolve_ctx = {
		.packet_header = NULL,
		.packet_context = NULL,
		.event_header = NULL,
		.event_common_context = NULL,
		.event_specific_context = field_class,
		.event_payload = NULL,
	};

	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
		BT_FIELD_CLASS_TYPE_STRUCTURE,
		"Specific context field classe is not a structure field classe: "
		"%!+F", field_class);
	stream_class = bt_event_class_borrow_stream_class_inline(
		event_class);
	trace = bt_stream_class_borrow_trace_inline(stream_class);
	resolve_ctx.packet_header = trace->packet_header_fc;
	resolve_ctx.packet_context = stream_class->packet_context_fc;
	resolve_ctx.event_header = stream_class->event_header_fc;
	resolve_ctx.event_common_context =
		stream_class->event_common_context_fc;

	ret = bt_resolve_field_paths(field_class, &resolve_ctx);
	if (ret) {
		goto end;
	}

	bt_field_class_make_part_of_trace(field_class);
	bt_object_put_ref(event_class->specific_context_fc);
	event_class->specific_context_fc = bt_object_get_ref(field_class);
	bt_field_class_freeze(field_class);
	BT_LIB_LOGV("Set event class's specific context field classe: %!+E",
		event_class);

end:
	return ret;
}

struct bt_field_class *bt_event_class_borrow_payload_field_class(
		struct bt_event_class *event_class)
{
	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	return event_class->payload_fc;
}

struct bt_private_field_class *bt_private_event_class_borrow_payload_field_class(
		struct bt_private_event_class *event_class)
{
	return (void *) bt_event_class_borrow_payload_field_class(
		(void *) event_class);
}

int bt_private_event_class_set_payload_field_class(
		struct bt_private_event_class *priv_event_class,
		struct bt_private_field_class *priv_field_class)
{
	int ret;
	struct bt_event_class *event_class = (void *) priv_event_class;
	struct bt_field_class *field_class = (void *) priv_field_class;
	struct bt_stream_class *stream_class;
	struct bt_trace *trace;
	struct bt_resolve_field_path_context resolve_ctx = {
		.packet_header = NULL,
		.packet_context = NULL,
		.event_header = NULL,
		.event_common_context = NULL,
		.event_specific_context = NULL,
		.event_payload = field_class,
	};

	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
		BT_FIELD_CLASS_TYPE_STRUCTURE,
		"Payload field classe is not a structure field classe: %!+F",
		field_class);
	stream_class = bt_event_class_borrow_stream_class_inline(
		event_class);
	trace = bt_stream_class_borrow_trace_inline(stream_class);
	resolve_ctx.packet_header = trace->packet_header_fc;
	resolve_ctx.packet_context = stream_class->packet_context_fc;
	resolve_ctx.event_header = stream_class->event_header_fc;
	resolve_ctx.event_common_context =
		stream_class->event_common_context_fc;
	resolve_ctx.event_specific_context = event_class->specific_context_fc;

	ret = bt_resolve_field_paths(field_class, &resolve_ctx);
	if (ret) {
		goto end;
	}

	bt_field_class_make_part_of_trace(field_class);
	bt_object_put_ref(event_class->payload_fc);
	event_class->payload_fc = bt_object_get_ref(field_class);
	bt_field_class_freeze(field_class);
	BT_LIB_LOGV("Set event class's payload field classe: %!+E", event_class);

end:
	return ret;
}

BT_HIDDEN
void _bt_event_class_freeze(struct bt_event_class *event_class)
{
	/* The field classes are already frozen */
	BT_ASSERT(event_class);
	BT_LIB_LOGD("Freezing event class: %!+E", event_class);
	event_class->frozen = true;
}
Commit	Line	Data
	1	/*
	2	* Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
	3	*
	4	* Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	19	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	22	* SOFTWARE.
	23	*/
	24
	25	#define BT_LOG_TAG "EVENT-CLASS"
	26	#include <babeltrace/lib-logging-internal.h>
	27
	28	#include <babeltrace/assert-pre-internal.h>
	29	#include <babeltrace/trace-ir/clock-value-internal.h>
	30	#include <babeltrace/trace-ir/fields-internal.h>
	31	#include <babeltrace/trace-ir/field-classes.h>
	32	#include <babeltrace/trace-ir/field-classes-internal.h>
	33	#include <babeltrace/trace-ir/private-event-class.h>
	34	#include <babeltrace/trace-ir/event-class.h>
	35	#include <babeltrace/trace-ir/event-class-internal.h>
	36	#include <babeltrace/trace-ir/event-internal.h>
	37	#include <babeltrace/trace-ir/private-stream-class.h>
	38	#include <babeltrace/trace-ir/stream-class.h>
	39	#include <babeltrace/trace-ir/stream-class-internal.h>
	40	#include <babeltrace/trace-ir/trace-internal.h>
	41	#include <babeltrace/trace-ir/utils-internal.h>
	42	#include <babeltrace/trace-ir/resolve-field-path-internal.h>
	43	#include <babeltrace/object.h>
	44	#include <babeltrace/trace-ir/attributes-internal.h>
	45	#include <babeltrace/compiler-internal.h>
	46	#include <babeltrace/endian-internal.h>
	47	#include <babeltrace/types.h>
	48	#include <babeltrace/values-internal.h>
	49	#include <babeltrace/assert-internal.h>
	50	#include <inttypes.h>
	51	#include <stdlib.h>
	52
	53	#define BT_ASSERT_PRE_EVENT_CLASS_HOT(_ec) \
	54	BT_ASSERT_PRE_HOT(((struct bt_event_class *) (_ec)), \
	55	"Event class", ": %!+E", (_ec))
	56
	57	static
	58	void destroy_event_class(struct bt_object *obj)
	59	{
	60	struct bt_event_class event_class = (void ) obj;
	61
	62	BT_LIB_LOGD("Destroying event class: %!+E", event_class);
	63
	64	if (event_class->name.str) {
	65	g_string_free(event_class->name.str, TRUE);
	66	event_class->name.str = NULL;
	67	}
	68
	69	if (event_class->emf_uri.str) {
	70	g_string_free(event_class->emf_uri.str, TRUE);
	71	event_class->emf_uri.str = NULL;
	72	}
	73
	74	BT_LOGD_STR("Putting context field classe.");
	75	BT_OBJECT_PUT_REF_AND_RESET(event_class->specific_context_fc);
	76	BT_LOGD_STR("Putting payload field classe.");
	77	BT_OBJECT_PUT_REF_AND_RESET(event_class->payload_fc);
	78	bt_object_pool_finalize(&event_class->event_pool);
	79	g_free(obj);
	80	}
	81
	82	static
	83	void free_event(struct bt_event *event,
	84	struct bt_event_class *event_class)
	85	{
	86	bt_event_destroy(event);
	87	}
	88
	89	BT_ASSERT_PRE_FUNC
	90	static
	91	bool event_class_id_is_unique(struct bt_stream_class *stream_class, uint64_t id)
	92	{
	93	uint64_t i;
	94	bool is_unique = true;
	95
	96	for (i = 0; i < stream_class->event_classes->len; i++) {
	97	struct bt_event_class *ec =
	98	stream_class->event_classes->pdata[i];
	99
	100	if (ec->id == id) {
	101	is_unique = false;
	102	goto end;
	103	}
	104	}
	105
	106	end:
	107	return is_unique;
	108	}
	109
	110	static
	111	struct bt_event_class *create_event_class_with_id(
	112	struct bt_stream_class *stream_class, uint64_t id)
	113	{
	114	int ret;
	115	struct bt_event_class *event_class;
	116
	117	BT_ASSERT(stream_class);
	118	BT_ASSERT_PRE(event_class_id_is_unique(stream_class, id),
	119	"Duplicate event class ID: %![sc-]+S, id=%" PRIu64,
	120	stream_class, id);
	121	BT_LIB_LOGD("Creating event class object: %![sc-]+S, id=%" PRIu64,
	122	stream_class, id);
	123	event_class = g_new0(struct bt_event_class, 1);
	124	if (!event_class) {
	125	BT_LOGE_STR("Failed to allocate one event class.");
	126	goto error;
	127	}
	128
	129	bt_object_init_shared_with_parent(&event_class->base,
	130	destroy_event_class);
	131	event_class->id = id;
	132	bt_property_uint_init(&event_class->log_level,
	133	BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE, 0);
	134	event_class->name.str = g_string_new(NULL);
	135	if (!event_class->name.str) {
	136	BT_LOGE_STR("Failed to allocate a GString.");
	137	ret = -1;
	138	goto end;
	139	}
	140
	141	event_class->emf_uri.str = g_string_new(NULL);
	142	if (!event_class->emf_uri.str) {
	143	BT_LOGE_STR("Failed to allocate a GString.");
	144	ret = -1;
	145	goto end;
	146	}
	147
	148	ret = bt_object_pool_initialize(&event_class->event_pool,
	149	(bt_object_pool_new_object_func) bt_event_new,
	150	(bt_object_pool_destroy_object_func) free_event,
	151	event_class);
	152	if (ret) {
	153	BT_LOGE("Failed to initialize event pool: ret=%d",
	154	ret);
	155	goto error;
	156	}
	157
	158	bt_object_set_parent(&event_class->base, &stream_class->base);
	159	g_ptr_array_add(stream_class->event_classes, event_class);
	160	bt_stream_class_freeze(stream_class);
	161	BT_LIB_LOGD("Created event class object: %!+E", event_class);
	162	goto end;
	163
	164	error:
	165	BT_OBJECT_PUT_REF_AND_RESET(event_class);
	166
	167	end:
	168	return event_class;
	169	}
	170
	171	struct bt_private_event_class *bt_private_event_class_create(
	172	struct bt_private_stream_class *priv_stream_class)
	173	{
	174	struct bt_stream_class stream_class = (void ) priv_stream_class;
	175
	176	BT_ASSERT_PRE_NON_NULL(stream_class, "Stream class");
	177	BT_ASSERT_PRE(stream_class->assigns_automatic_event_class_id,
	178	"Stream class does not automatically assigns event class IDs: "
	179	"%![sc-]+S", stream_class);
	180	return (void ) create_event_class_with_id((void ) stream_class,
	181	(uint64_t) stream_class->event_classes->len);
	182	}
	183
	184	struct bt_private_event_class *bt_private_event_class_create_with_id(
	185	struct bt_private_stream_class *priv_stream_class, uint64_t id)
	186	{
	187	struct bt_stream_class stream_class = (void ) priv_stream_class;
	188
	189	BT_ASSERT_PRE(!stream_class->assigns_automatic_event_class_id,
	190	"Stream class automatically assigns event class IDs: "
	191	"%![sc-]+S", stream_class);
	192	return (void ) create_event_class_with_id((void ) stream_class, id);
	193	}
	194
	195	const char bt_event_class_get_name(struct bt_event_class event_class)
	196	{
	197	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	198	return event_class->name.value;
	199	}
	200
	201	int bt_private_event_class_set_name(struct bt_private_event_class *priv_event_class,
	202	const char *name)
	203	{
	204	struct bt_event_class event_class = (void ) priv_event_class;
	205
	206	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	207	BT_ASSERT_PRE_NON_NULL(name, "Name");
	208	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	209	g_string_assign(event_class->name.str, name);
	210	event_class->name.value = event_class->name.str->str;
	211	BT_LIB_LOGV("Set event class's name: %!+E", event_class);
	212	return 0;
	213	}
	214
	215	uint64_t bt_event_class_get_id(struct bt_event_class *event_class)
	216	{
	217	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	218	return event_class->id;
	219	}
	220
	221	enum bt_property_availability bt_event_class_get_log_level(
	222	struct bt_event_class *event_class,
	223	enum bt_event_class_log_level *log_level)
	224	{
	225	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	226	BT_ASSERT_PRE_NON_NULL(log_level, "Log level (output)");
	227	*log_level = (enum bt_event_class_log_level)
	228	event_class->log_level.value;
	229	return event_class->log_level.base.avail;
	230	}
	231
	232	void bt_private_event_class_set_log_level(
	233	struct bt_private_event_class *priv_event_class,
	234	enum bt_event_class_log_level log_level)
	235	{
	236	struct bt_event_class event_class = (void ) priv_event_class;
	237
	238	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	239	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	240	bt_property_uint_set(&event_class->log_level,
	241	(uint64_t) log_level);
	242	BT_LIB_LOGV("Set event class's log level: %!+E", event_class);
	243	}
	244
	245	const char bt_event_class_get_emf_uri(struct bt_event_class event_class)
	246	{
	247	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	248	return event_class->emf_uri.value;
	249	}
	250
	251	int bt_private_event_class_set_emf_uri(
	252	struct bt_private_event_class *priv_event_class,
	253	const char *emf_uri)
	254	{
	255	struct bt_event_class event_class = (void ) priv_event_class;
	256
	257	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	258	BT_ASSERT_PRE_NON_NULL(emf_uri, "EMF URI");
	259	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	260	g_string_assign(event_class->emf_uri.str, emf_uri);
	261	event_class->emf_uri.value = event_class->emf_uri.str->str;
	262	BT_LIB_LOGV("Set event class's EMF URI: %!+E", event_class);
	263	return 0;
	264	}
	265
	266	struct bt_stream_class *bt_event_class_borrow_stream_class(
	267	struct bt_event_class *event_class)
	268	{
	269	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	270	return bt_event_class_borrow_stream_class_inline(event_class);
	271	}
	272
	273	struct bt_private_stream_class *
	274	bt_private_event_class_borrow_stream_class(
	275	struct bt_private_event_class *event_class)
	276	{
	277	return (void *) bt_event_class_borrow_stream_class(
	278	(void *) event_class);
	279	}
	280
	281	struct bt_field_class *bt_event_class_borrow_specific_context_field_class(
	282	struct bt_event_class *event_class)
	283	{
	284	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	285	return event_class->specific_context_fc;
	286	}
	287
	288	struct bt_private_field_class *
	289	bt_private_event_class_borrow_specific_context_field_class(
	290	struct bt_private_event_class *event_class)
	291	{
	292	return (void *) bt_event_class_borrow_specific_context_field_class(
	293	(void *) event_class);
	294	}
	295
	296	int bt_private_event_class_set_specific_context_field_class(
	297	struct bt_private_event_class *priv_event_class,
	298	struct bt_private_field_class *priv_field_class)
	299	{
	300	int ret;
	301	struct bt_event_class event_class = (void ) priv_event_class;
	302	struct bt_field_class field_class = (void ) priv_field_class;
	303	struct bt_stream_class *stream_class;
	304	struct bt_trace *trace;
	305	struct bt_resolve_field_path_context resolve_ctx = {
	306	.packet_header = NULL,
	307	.packet_context = NULL,
	308	.event_header = NULL,
	309	.event_common_context = NULL,
	310	.event_specific_context = field_class,
	311	.event_payload = NULL,
	312	};
	313
	314	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	315	BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
	316	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	317	BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
	318	BT_FIELD_CLASS_TYPE_STRUCTURE,
	319	"Specific context field classe is not a structure field classe: "
	320	"%!+F", field_class);
	321	stream_class = bt_event_class_borrow_stream_class_inline(
	322	event_class);
	323	trace = bt_stream_class_borrow_trace_inline(stream_class);
	324	resolve_ctx.packet_header = trace->packet_header_fc;
	325	resolve_ctx.packet_context = stream_class->packet_context_fc;
	326	resolve_ctx.event_header = stream_class->event_header_fc;
	327	resolve_ctx.event_common_context =
	328	stream_class->event_common_context_fc;
	329
	330	ret = bt_resolve_field_paths(field_class, &resolve_ctx);
	331	if (ret) {
	332	goto end;
	333	}
	334
	335	bt_field_class_make_part_of_trace(field_class);
	336	bt_object_put_ref(event_class->specific_context_fc);
	337	event_class->specific_context_fc = bt_object_get_ref(field_class);
	338	bt_field_class_freeze(field_class);
	339	BT_LIB_LOGV("Set event class's specific context field classe: %!+E",
	340	event_class);
	341
	342	end:
	343	return ret;
	344	}
	345
	346	struct bt_field_class *bt_event_class_borrow_payload_field_class(
	347	struct bt_event_class *event_class)
	348	{
	349	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	350	return event_class->payload_fc;
	351	}
	352
	353	struct bt_private_field_class *bt_private_event_class_borrow_payload_field_class(
	354	struct bt_private_event_class *event_class)
	355	{
	356	return (void *) bt_event_class_borrow_payload_field_class(
	357	(void *) event_class);
	358	}
	359
	360	int bt_private_event_class_set_payload_field_class(
	361	struct bt_private_event_class *priv_event_class,
	362	struct bt_private_field_class *priv_field_class)
	363	{
	364	int ret;
	365	struct bt_event_class event_class = (void ) priv_event_class;
	366	struct bt_field_class field_class = (void ) priv_field_class;
	367	struct bt_stream_class *stream_class;
	368	struct bt_trace *trace;
	369	struct bt_resolve_field_path_context resolve_ctx = {
	370	.packet_header = NULL,
	371	.packet_context = NULL,
	372	.event_header = NULL,
	373	.event_common_context = NULL,
	374	.event_specific_context = NULL,
	375	.event_payload = field_class,
	376	};
	377
	378	BT_ASSERT_PRE_NON_NULL(event_class, "Event class");
	379	BT_ASSERT_PRE_NON_NULL(field_class, "Field class");
	380	BT_ASSERT_PRE_EVENT_CLASS_HOT(event_class);
	381	BT_ASSERT_PRE(bt_field_class_get_type(field_class) ==
	382	BT_FIELD_CLASS_TYPE_STRUCTURE,
	383	"Payload field classe is not a structure field classe: %!+F",
	384	field_class);
	385	stream_class = bt_event_class_borrow_stream_class_inline(
	386	event_class);
	387	trace = bt_stream_class_borrow_trace_inline(stream_class);
	388	resolve_ctx.packet_header = trace->packet_header_fc;
	389	resolve_ctx.packet_context = stream_class->packet_context_fc;
	390	resolve_ctx.event_header = stream_class->event_header_fc;
	391	resolve_ctx.event_common_context =
	392	stream_class->event_common_context_fc;
	393	resolve_ctx.event_specific_context = event_class->specific_context_fc;
	394
	395	ret = bt_resolve_field_paths(field_class, &resolve_ctx);
	396	if (ret) {
	397	goto end;
	398	}
	399
	400	bt_field_class_make_part_of_trace(field_class);
	401	bt_object_put_ref(event_class->payload_fc);
	402	event_class->payload_fc = bt_object_get_ref(field_class);
	403	bt_field_class_freeze(field_class);
	404	BT_LIB_LOGV("Set event class's payload field classe: %!+E", event_class);
	405
	406	end:
	407	return ret;
	408	}
	409
	410	BT_HIDDEN
	411	void _bt_event_class_freeze(struct bt_event_class *event_class)
	412	{
	413	/* The field classes are already frozen */
	414	BT_ASSERT(event_class);
	415	BT_LIB_LOGD("Freezing event class: %!+E", event_class);
	416	event_class->frozen = true;
	417	}