[babeltrace.git] / formats / ctf / ir / event-class.c

/*
 * event-class.c
 *
 * Babeltrace CTF IR - Event class
 *
 * 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.
 */

#include <babeltrace/ctf-ir/fields-internal.h>
#include <babeltrace/ctf-ir/field-types-internal.h>
#include <babeltrace/ctf-ir/event-class.h>
#include <babeltrace/ctf-ir/event-class-internal.h>
#include <babeltrace/ctf-ir/stream-class.h>
#include <babeltrace/ctf-ir/stream-class-internal.h>
#include <babeltrace/ctf-ir/trace-internal.h>
#include <babeltrace/ctf-ir/validation-internal.h>
#include <babeltrace/ctf-ir/utils.h>
#include <babeltrace/ref.h>
#include <babeltrace/ctf-ir/attributes-internal.h>
#include <babeltrace/compiler.h>
#include <babeltrace/endian.h>

static
void bt_ctf_event_class_destroy(struct bt_object *obj);

struct bt_ctf_event_class *bt_ctf_event_class_create(const char *name)
{
	int ret;
	struct bt_value *obj = NULL;
	struct bt_ctf_event_class *event_class = NULL;

	if (bt_ctf_validate_identifier(name)) {
		goto error;
	}

	event_class = g_new0(struct bt_ctf_event_class, 1);
	if (!event_class) {
		goto error;
	}

	event_class->id = -1;
	bt_object_init(event_class, bt_ctf_event_class_destroy);
	event_class->fields = bt_ctf_field_type_structure_create();
	if (!event_class->fields) {
		goto error;
	}

	event_class->attributes = bt_ctf_attributes_create();
	if (!event_class->attributes) {
		goto error;
	}

	obj = bt_value_integer_create_init(-1);
	if (!obj) {
		goto error;
	}

	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
		"id", obj);
	if (ret) {
		goto error;
	}

	BT_PUT(obj);

	obj = bt_value_string_create_init(name);
	if (!obj) {
		goto error;
	}

	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
		"name", obj);
	if (ret) {
		goto error;
	}

	BT_PUT(obj);

	return event_class;

error:
        BT_PUT(event_class);
	BT_PUT(obj);
	return event_class;
}

const char *bt_ctf_event_class_get_name(struct bt_ctf_event_class *event_class)
{
	struct bt_value *obj = NULL;
	const char *name = NULL;

	if (!event_class) {
		goto end;
	}

	if (event_class->name) {
		name = event_class->name;
		goto end;
	}

	obj = bt_ctf_attributes_get_field_value(event_class->attributes,
		BT_CTF_EVENT_CLASS_ATTR_NAME_INDEX);
	if (!obj) {
		goto end;
	}

	if (bt_value_string_get(obj, &name)) {
		name = NULL;
	}

end:
	BT_PUT(obj);
	return name;
}

int64_t bt_ctf_event_class_get_id(struct bt_ctf_event_class *event_class)
{
	struct bt_value *obj = NULL;
	int64_t ret = 0;

	if (!event_class) {
		ret = -1;
		goto end;
	}

	if (event_class->id >= 0) {
		ret = event_class->id;
		goto end;
	}

	obj = bt_ctf_attributes_get_field_value(event_class->attributes,
		BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
	if (!obj) {
		goto end;
	}

	if (bt_value_integer_get(obj, &ret)) {
		ret = -1;
	}

	if (ret < 0) {
		/* means ID is not set */
		ret = -1;
		goto end;
	}

end:
	BT_PUT(obj);
	return ret;
}

int bt_ctf_event_class_set_id(struct bt_ctf_event_class *event_class,
		uint32_t id)
{
	int ret = 0;
	struct bt_value *obj = NULL;
	struct bt_ctf_stream_class *stream_class = NULL;


	if (!event_class) {
		ret = -1;
		goto end;
	}

	stream_class = bt_ctf_event_class_get_stream_class(event_class);
	if (stream_class) {
		/*
		 * We don't allow changing the id if the event class has already
		 * been added to a stream class.
		 */
		ret = -1;
		goto end;
	}

	obj = bt_ctf_attributes_get_field_value(event_class->attributes,
		BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
	if (!obj) {
		goto end;
	}

	if (bt_value_integer_set(obj, id)) {
		ret = -1;
		goto end;
	}

end:
	BT_PUT(obj);
	BT_PUT(stream_class);
	return ret;
}

int bt_ctf_event_class_set_attribute(
		struct bt_ctf_event_class *event_class, const char *name,
		struct bt_value *value)
{
	int ret = 0;

	if (!event_class || !name || !value || event_class->frozen) {
		ret = -1;
		goto end;
	}

	if (!strcmp(name, "id") || !strcmp(name, "loglevel") ||
			!strcmp(name, "stream_id")) {
		if (!bt_value_is_integer(value)) {
			ret = -1;
			goto end;
		}
	} else if (!strcmp(name, "name") || !strcmp(name, "model.emf.uri")) {
		if (!bt_value_is_string(value)) {
			ret = -1;
			goto end;
		}
	} else {
		/* unknown attribute */
		ret = -1;
		goto end;
	}

	/* "id" special case: >= 0 */
	if (!strcmp(name, "id")) {
		int64_t val;

		ret = bt_value_integer_get(value, &val);

		if (ret) {
			goto end;
		}

		if (val < 0) {
			ret = -1;
			goto end;
		}
	}

	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
			name, value);

end:
	return ret;
}

int bt_ctf_event_class_get_attribute_count(
		struct bt_ctf_event_class *event_class)
{
	int ret = 0;

	if (!event_class) {
		ret = -1;
		goto end;
	}

	ret = bt_ctf_attributes_get_count(event_class->attributes);

end:
	return ret;
}

const char *
bt_ctf_event_class_get_attribute_name(
		struct bt_ctf_event_class *event_class, int index)
{
	const char *ret;

	if (!event_class) {
		ret = NULL;
		goto end;
	}

	ret = bt_ctf_attributes_get_field_name(event_class->attributes, index);

end:
	return ret;
}

struct bt_value *
bt_ctf_event_class_get_attribute_value(struct bt_ctf_event_class *event_class,
		int index)
{
	struct bt_value *ret;

	if (!event_class) {
		ret = NULL;
		goto end;
	}

	ret = bt_ctf_attributes_get_field_value(event_class->attributes, index);

end:
	return ret;
}

struct bt_value *
bt_ctf_event_class_get_attribute_value_by_name(
		struct bt_ctf_event_class *event_class, const char *name)
{
	struct bt_value *ret;

	if (!event_class || !name) {
		ret = NULL;
		goto end;
	}

	ret = bt_ctf_attributes_get_field_value_by_name(event_class->attributes,
		name);

end:
	return ret;

}

struct bt_ctf_stream_class *bt_ctf_event_class_get_stream_class(
		struct bt_ctf_event_class *event_class)
{
	return (struct bt_ctf_stream_class *) bt_object_get_parent(event_class);
}

struct bt_ctf_field_type *bt_ctf_event_class_get_payload_type(
		struct bt_ctf_event_class *event_class)
{
	struct bt_ctf_field_type *payload = NULL;

	if (!event_class) {
		goto end;
	}

	bt_get(event_class->fields);
	payload = event_class->fields;
end:
	return payload;
}

int bt_ctf_event_class_set_payload_type(struct bt_ctf_event_class *event_class,
		struct bt_ctf_field_type *payload)
{
	int ret = 0;

	if (!event_class) {
		ret = -1;
		goto end;
	}

	if (payload && bt_ctf_field_type_get_type_id(payload) !=
			BT_CTF_TYPE_ID_STRUCT) {
		ret = -1;
		goto end;
	}

	bt_put(event_class->fields);
	event_class->fields = bt_get(payload);
end:
	return ret;
}

int bt_ctf_event_class_add_field(struct bt_ctf_event_class *event_class,
		struct bt_ctf_field_type *type,
		const char *name)
{
	int ret = 0;

	if (!event_class || !type || bt_ctf_validate_identifier(name) ||
		event_class->frozen) {
		ret = -1;
		goto end;
	}

	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
		BT_CTF_TYPE_ID_STRUCT) {
		ret = -1;
		goto end;
	}

	ret = bt_ctf_field_type_structure_add_field(event_class->fields,
		type, name);
end:
	return ret;
}

int bt_ctf_event_class_get_field_count(
		struct bt_ctf_event_class *event_class)
{
	int ret;

	if (!event_class) {
		ret = -1;
		goto end;
	}

	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
		BT_CTF_TYPE_ID_STRUCT) {
		ret = -1;
		goto end;
	}

	ret = bt_ctf_field_type_structure_get_field_count(event_class->fields);
end:
	return ret;
}

int bt_ctf_event_class_get_field(struct bt_ctf_event_class *event_class,
		const char **field_name, struct bt_ctf_field_type **field_type,
		int index)
{
	int ret;

	if (!event_class || index < 0) {
		ret = -1;
		goto end;
	}

	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
		BT_CTF_TYPE_ID_STRUCT) {
		ret = -1;
		goto end;
	}

	ret = bt_ctf_field_type_structure_get_field(event_class->fields,
		field_name, field_type, index);
end:
	return ret;
}

struct bt_ctf_field_type *bt_ctf_event_class_get_field_by_name(
		struct bt_ctf_event_class *event_class, const char *name)
{
	GQuark name_quark;
	struct bt_ctf_field_type *field_type = NULL;

	if (!event_class || !name) {
		goto end;
	}

	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
		BT_CTF_TYPE_ID_STRUCT) {
		goto end;
	}

	name_quark = g_quark_try_string(name);
	if (!name_quark) {
		goto end;
	}

	/*
	 * No need to increment field_type's reference count since getting it
	 * from the structure already does.
	 */
	field_type = bt_ctf_field_type_structure_get_field_type_by_name(
		event_class->fields, name);
end:
	return field_type;
}

struct bt_ctf_field_type *bt_ctf_event_class_get_context_type(
		struct bt_ctf_event_class *event_class)
{
	struct bt_ctf_field_type *context_type = NULL;

	if (!event_class || !event_class->context) {
		goto end;
	}

	bt_get(event_class->context);
	context_type = event_class->context;
end:
	return context_type;
}

int bt_ctf_event_class_set_context_type(
		struct bt_ctf_event_class *event_class,
		struct bt_ctf_field_type *context)
{
	int ret = 0;

	if (!event_class || event_class->frozen) {
		ret = -1;
		goto end;
	}

	if (context && bt_ctf_field_type_get_type_id(context) !=
			BT_CTF_TYPE_ID_STRUCT) {
		ret = -1;
		goto end;
	}

	bt_put(event_class->context);
	event_class->context = bt_get(context);
end:
	return ret;

}

void bt_ctf_event_class_get(struct bt_ctf_event_class *event_class)
{
	bt_get(event_class);
}

void bt_ctf_event_class_put(struct bt_ctf_event_class *event_class)
{
	bt_put(event_class);
}

BT_HIDDEN
int bt_ctf_event_class_set_stream_id(struct bt_ctf_event_class *event_class,
		uint32_t stream_id)
{
	int ret = 0;
	struct bt_value *obj;

	obj = bt_value_integer_create_init(stream_id);

	if (!obj) {
		ret = -1;
		goto end;
	}

	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
		"stream_id", obj);

	if (event_class->frozen) {
		bt_ctf_attributes_freeze(event_class->attributes);
	}

end:
	BT_PUT(obj);
	return ret;
}

static
void bt_ctf_event_class_destroy(struct bt_object *obj)
{
	struct bt_ctf_event_class *event_class;

	event_class = container_of(obj, struct bt_ctf_event_class, base);
	bt_ctf_attributes_destroy(event_class->attributes);
	bt_put(event_class->context);
	bt_put(event_class->fields);
	g_free(event_class);
}

BT_HIDDEN
void bt_ctf_event_class_freeze(struct bt_ctf_event_class *event_class)
{
	assert(event_class);
	event_class->frozen = 1;
	event_class->name = bt_ctf_event_class_get_name(event_class);
	event_class->id = bt_ctf_event_class_get_id(event_class);
	bt_ctf_field_type_freeze(event_class->context);
	bt_ctf_field_type_freeze(event_class->fields);
	bt_ctf_attributes_freeze(event_class->attributes);
}

BT_HIDDEN
int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class,
		struct metadata_context *context)
{
	int i;
	int count;
	int ret = 0;
	struct bt_value *attr_value = NULL;

	assert(event_class);
	assert(context);

	context->current_indentation_level = 1;
	g_string_assign(context->field_name, "");
	g_string_append(context->string, "event {\n");
	count = bt_ctf_event_class_get_attribute_count(event_class);

	if (count < 0) {
		ret = -1;
		goto end;
	}

	for (i = 0; i < count; ++i) {
		const char *attr_name = NULL;

		attr_name = bt_ctf_event_class_get_attribute_name(
			event_class, i);
		attr_value = bt_ctf_event_class_get_attribute_value(
			event_class, i);

		if (!attr_name || !attr_value) {
			ret = -1;
			goto end;
		}

		switch (bt_value_get_type(attr_value)) {
		case BT_VALUE_TYPE_INTEGER:
		{
			int64_t value;

			ret = bt_value_integer_get(attr_value, &value);

			if (ret) {
				goto end;
			}

			g_string_append_printf(context->string,
				"\t%s = %" PRId64 ";\n", attr_name, value);
			break;
		}

		case BT_VALUE_TYPE_STRING:
		{
			const char *value;

			ret = bt_value_string_get(attr_value, &value);

			if (ret) {
				goto end;
			}

			g_string_append_printf(context->string,
				"\t%s = \"%s\";\n", attr_name, value);
			break;
		}

		default:
			/* should never happen */
			assert(false);
			break;
		}

		BT_PUT(attr_value);
	}

	if (event_class->context) {
		g_string_append(context->string, "\tcontext := ");
		ret = bt_ctf_field_type_serialize(event_class->context,
			context);
		if (ret) {
			goto end;
		}
		g_string_append(context->string, ";\n");
	}

	if (event_class->fields) {
		g_string_append(context->string, "\tfields := ");
		ret = bt_ctf_field_type_serialize(event_class->fields, context);
		if (ret) {
			goto end;
		}
		g_string_append(context->string, ";\n");
	}

	g_string_append(context->string, "};\n\n");
end:
	context->current_indentation_level = 0;
	BT_PUT(attr_value);
	return ret;
}

void bt_ctf_event_class_set_native_byte_order(
		struct bt_ctf_event_class *event_class,
		int byte_order)
{
	if (!event_class) {
		return;
	}

	assert(byte_order == 0 || byte_order == LITTLE_ENDIAN ||
		byte_order == BIG_ENDIAN);

	bt_ctf_field_type_set_native_byte_order(event_class->context,
		byte_order);
	bt_ctf_field_type_set_native_byte_order(event_class->fields,
		byte_order);
}
Commit	Line	Data
272df73e PP	1	/*
	2	* event-class.c
	3	*
	4	* Babeltrace CTF IR - Event class
	5	*
	6	* Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
	7	*
	8	* Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
	9	*
	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:
	16	*
	17	* The above copyright notice and this permission notice shall be included in
	18	* all copies or substantial portions of the Software.
	19	*
	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
	26	* SOFTWARE.
	27	*/
	28
	29	#include <babeltrace/ctf-ir/fields-internal.h>
	30	#include <babeltrace/ctf-ir/field-types-internal.h>
	31	#include <babeltrace/ctf-ir/event-class.h>
	32	#include <babeltrace/ctf-ir/event-class-internal.h>
	33	#include <babeltrace/ctf-ir/stream-class.h>
	34	#include <babeltrace/ctf-ir/stream-class-internal.h>
	35	#include <babeltrace/ctf-ir/trace-internal.h>
	36	#include <babeltrace/ctf-ir/validation-internal.h>
	37	#include <babeltrace/ctf-ir/utils.h>
	38	#include <babeltrace/ref.h>
	39	#include <babeltrace/ctf-ir/attributes-internal.h>
	40	#include <babeltrace/compiler.h>
6d9fe143	41	#include <babeltrace/endian.h>
272df73e PP	42
	43	static
	44	void bt_ctf_event_class_destroy(struct bt_object *obj);
	45
	46	struct bt_ctf_event_class bt_ctf_event_class_create(const char name)
	47	{
	48	int ret;
	49	struct bt_value *obj = NULL;
	50	struct bt_ctf_event_class *event_class = NULL;
	51
	52	if (bt_ctf_validate_identifier(name)) {
	53	goto error;
	54	}
	55
	56	event_class = g_new0(struct bt_ctf_event_class, 1);
	57	if (!event_class) {
	58	goto error;
	59	}
	60
5990dd44	61	event_class->id = -1;
272df73e PP	62	bt_object_init(event_class, bt_ctf_event_class_destroy);
	63	event_class->fields = bt_ctf_field_type_structure_create();
	64	if (!event_class->fields) {
	65	goto error;
	66	}
	67
	68	event_class->attributes = bt_ctf_attributes_create();
	69	if (!event_class->attributes) {
	70	goto error;
	71	}
	72
	73	obj = bt_value_integer_create_init(-1);
	74	if (!obj) {
	75	goto error;
	76	}
	77
	78	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
	79	"id", obj);
	80	if (ret) {
	81	goto error;
	82	}
	83
	84	BT_PUT(obj);
	85
	86	obj = bt_value_string_create_init(name);
	87	if (!obj) {
	88	goto error;
	89	}
	90
	91	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
	92	"name", obj);
	93	if (ret) {
	94	goto error;
	95	}
	96
	97	BT_PUT(obj);
	98
	99	return event_class;
	100
	101	error:
	102	BT_PUT(event_class);
	103	BT_PUT(obj);
	104	return event_class;
	105	}
	106
	107	const char bt_ctf_event_class_get_name(struct bt_ctf_event_class event_class)
	108	{
	109	struct bt_value *obj = NULL;
	110	const char *name = NULL;
	111
	112	if (!event_class) {
	113	goto end;
	114	}
	115
5990dd44 JG	116	if (event_class->name) {
	117	name = event_class->name;
	118	goto end;
	119	}
	120
272df73e PP	121	obj = bt_ctf_attributes_get_field_value(event_class->attributes,
	122	BT_CTF_EVENT_CLASS_ATTR_NAME_INDEX);
	123	if (!obj) {
	124	goto end;
	125	}
	126
	127	if (bt_value_string_get(obj, &name)) {
	128	name = NULL;
	129	}
	130
	131	end:
	132	BT_PUT(obj);
	133	return name;
	134	}
	135
	136	int64_t bt_ctf_event_class_get_id(struct bt_ctf_event_class *event_class)
	137	{
	138	struct bt_value *obj = NULL;
	139	int64_t ret = 0;
	140
	141	if (!event_class) {
	142	ret = -1;
	143	goto end;
	144	}
	145
5990dd44 JG	146	if (event_class->id >= 0) {
	147	ret = event_class->id;
	148	goto end;
	149	}
	150
272df73e PP	151	obj = bt_ctf_attributes_get_field_value(event_class->attributes,
	152	BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
	153	if (!obj) {
	154	goto end;
	155	}
	156
	157	if (bt_value_integer_get(obj, &ret)) {
	158	ret = -1;
	159	}
	160
	161	if (ret < 0) {
	162	/* means ID is not set */
	163	ret = -1;
	164	goto end;
	165	}
	166
	167	end:
	168	BT_PUT(obj);
	169	return ret;
	170	}
	171
	172	int bt_ctf_event_class_set_id(struct bt_ctf_event_class *event_class,
	173	uint32_t id)
	174	{
	175	int ret = 0;
	176	struct bt_value *obj = NULL;
	177	struct bt_ctf_stream_class *stream_class = NULL;
	178
	179
	180	if (!event_class) {
	181	ret = -1;
	182	goto end;
	183	}
	184
	185	stream_class = bt_ctf_event_class_get_stream_class(event_class);
	186	if (stream_class) {
	187	/*
	188	* We don't allow changing the id if the event class has already
	189	* been added to a stream class.
	190	*/
	191	ret = -1;
	192	goto end;
	193	}
	194
	195	obj = bt_ctf_attributes_get_field_value(event_class->attributes,
	196	BT_CTF_EVENT_CLASS_ATTR_ID_INDEX);
	197	if (!obj) {
	198	goto end;
	199	}
	200
	201	if (bt_value_integer_set(obj, id)) {
	202	ret = -1;
	203	goto end;
	204	}
	205
	206	end:
	207	BT_PUT(obj);
	208	BT_PUT(stream_class);
	209	return ret;
	210	}
	211
	212	int bt_ctf_event_class_set_attribute(
	213	struct bt_ctf_event_class event_class, const char name,
	214	struct bt_value *value)
215	{
216	int ret = 0;
217
218	if (!event_class \|\| !name \|\| !value \|\| event_class->frozen) {
219	ret = -1;
220	goto end;
221	}
222
2073703a JG	223	if (!strcmp(name, "id") \|\| !strcmp(name, "loglevel") \|\|
2073703a JG	224	!strcmp(name, "stream_id")) {
272df73e PP	225	if (!bt_value_is_integer(value)) {
	226	ret = -1;
	227	goto end;
	228	}
	229	} else if (!strcmp(name, "name") \|\| !strcmp(name, "model.emf.uri")) {
	230	if (!bt_value_is_string(value)) {
	231	ret = -1;
	232	goto end;
	233	}
	234	} else {
	235	/* unknown attribute */
	236	ret = -1;
	237	goto end;
	238	}
	239
	240	/* "id" special case: >= 0 */
	241	if (!strcmp(name, "id")) {
	242	int64_t val;
	243
	244	ret = bt_value_integer_get(value, &val);
	245
	246	if (ret) {
	247	goto end;
	248	}
	249
	250	if (val < 0) {
	251	ret = -1;
	252	goto end;
	253	}
	254	}
	255
	256	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
2073703a	257	name, value);
272df73e PP	258
	259	end:
	260	return ret;
	261	}
	262
	263	int bt_ctf_event_class_get_attribute_count(
	264	struct bt_ctf_event_class *event_class)
	265	{
	266	int ret = 0;
	267
	268	if (!event_class) {
	269	ret = -1;
	270	goto end;
	271	}
	272
	273	ret = bt_ctf_attributes_get_count(event_class->attributes);
	274
	275	end:
	276	return ret;
	277	}
	278
	279	const char *
	280	bt_ctf_event_class_get_attribute_name(
	281	struct bt_ctf_event_class *event_class, int index)
	282	{
	283	const char *ret;
	284
	285	if (!event_class) {
	286	ret = NULL;
	287	goto end;
	288	}
	289
	290	ret = bt_ctf_attributes_get_field_name(event_class->attributes, index);
	291
	292	end:
	293	return ret;
	294	}
	295
	296	struct bt_value *
	297	bt_ctf_event_class_get_attribute_value(struct bt_ctf_event_class *event_class,
	298	int index)
	299	{
	300	struct bt_value *ret;
	301
	302	if (!event_class) {
	303	ret = NULL;
	304	goto end;
	305	}
	306
	307	ret = bt_ctf_attributes_get_field_value(event_class->attributes, index);
	308
	309	end:
	310	return ret;
	311	}
	312
	313	struct bt_value *
	314	bt_ctf_event_class_get_attribute_value_by_name(
	315	struct bt_ctf_event_class event_class, const char name)
	316	{
	317	struct bt_value *ret;
	318
	319	if (!event_class \|\| !name) {
	320	ret = NULL;
	321	goto end;
322	}
323
324	ret = bt_ctf_attributes_get_field_value_by_name(event_class->attributes,
325	name);
326
327	end:
328	return ret;
329
330	}
331
332	struct bt_ctf_stream_class *bt_ctf_event_class_get_stream_class(
333	struct bt_ctf_event_class *event_class)
334	{
335	return (struct bt_ctf_stream_class *) bt_object_get_parent(event_class);
336	}
337
338	struct bt_ctf_field_type *bt_ctf_event_class_get_payload_type(
339	struct bt_ctf_event_class *event_class)
340	{
341	struct bt_ctf_field_type *payload = NULL;
342
343	if (!event_class) {
344	goto end;
345	}
346
347	bt_get(event_class->fields);
348	payload = event_class->fields;
349	end:
350	return payload;
351	}
352
353	int bt_ctf_event_class_set_payload_type(struct bt_ctf_event_class *event_class,
354	struct bt_ctf_field_type *payload)
355	{
356	int ret = 0;
357
835b2d10 JG	358	if (!event_class) {
	359	ret = -1;
	360	goto end;
	361	}
	362
	363	if (payload && bt_ctf_field_type_get_type_id(payload) !=
	364	BT_CTF_TYPE_ID_STRUCT) {
272df73e PP	365	ret = -1;
	366	goto end;
	367	}
	368
272df73e	369	bt_put(event_class->fields);
835b2d10	370	event_class->fields = bt_get(payload);
272df73e PP	371	end:
	372	return ret;
	373	}
	374
	375	int bt_ctf_event_class_add_field(struct bt_ctf_event_class *event_class,
	376	struct bt_ctf_field_type *type,
	377	const char *name)
	378	{
	379	int ret = 0;
	380
	381	if (!event_class \|\| !type \|\| bt_ctf_validate_identifier(name) \|\|
	382	event_class->frozen) {
	383	ret = -1;
	384	goto end;
	385	}
	386
	387	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
	388	BT_CTF_TYPE_ID_STRUCT) {
	389	ret = -1;
	390	goto end;
	391	}
	392
	393	ret = bt_ctf_field_type_structure_add_field(event_class->fields,
	394	type, name);
	395	end:
	396	return ret;
	397	}
	398
	399	int bt_ctf_event_class_get_field_count(
	400	struct bt_ctf_event_class *event_class)
	401	{
	402	int ret;
	403
	404	if (!event_class) {
	405	ret = -1;
	406	goto end;
	407	}
	408
	409	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
	410	BT_CTF_TYPE_ID_STRUCT) {
	411	ret = -1;
	412	goto end;
	413	}
	414
	415	ret = bt_ctf_field_type_structure_get_field_count(event_class->fields);
	416	end:
	417	return ret;
	418	}
	419
	420	int bt_ctf_event_class_get_field(struct bt_ctf_event_class *event_class,
	421	const char field_name, struct bt_ctf_field_type field_type,
	422	int index)
	423	{
	424	int ret;
	425
	426	if (!event_class \|\| index < 0) {
	427	ret = -1;
	428	goto end;
	429	}
	430
	431	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
	432	BT_CTF_TYPE_ID_STRUCT) {
	433	ret = -1;
	434	goto end;
435	}
436
437	ret = bt_ctf_field_type_structure_get_field(event_class->fields,
438	field_name, field_type, index);
439	end:
440	return ret;
441	}
442
443	struct bt_ctf_field_type *bt_ctf_event_class_get_field_by_name(
444	struct bt_ctf_event_class event_class, const char name)
445	{
446	GQuark name_quark;
447	struct bt_ctf_field_type *field_type = NULL;
448
449	if (!event_class \|\| !name) {
450	goto end;
451	}
452
453	if (bt_ctf_field_type_get_type_id(event_class->fields) !=
454	BT_CTF_TYPE_ID_STRUCT) {
455	goto end;
456	}
457
458	name_quark = g_quark_try_string(name);
459	if (!name_quark) {
460	goto end;
461	}
462
463	/*
464	* No need to increment field_type's reference count since getting it
465	* from the structure already does.
466	*/
467	field_type = bt_ctf_field_type_structure_get_field_type_by_name(
468	event_class->fields, name);
469	end:
470	return field_type;
471	}
472
473	struct bt_ctf_field_type *bt_ctf_event_class_get_context_type(
474	struct bt_ctf_event_class *event_class)
475	{
476	struct bt_ctf_field_type *context_type = NULL;
477
478	if (!event_class \|\| !event_class->context) {
479	goto end;
480	}
481
482	bt_get(event_class->context);
483	context_type = event_class->context;
484	end:
485	return context_type;
486	}
487
488	int bt_ctf_event_class_set_context_type(
489	struct bt_ctf_event_class *event_class,
490	struct bt_ctf_field_type *context)
491	{
492	int ret = 0;
493
835b2d10	494	if (!event_class \|\| event_class->frozen) {
272df73e PP	495	ret = -1;
	496	goto end;
	497	}
	498
835b2d10 JG	499	if (context && bt_ctf_field_type_get_type_id(context) !=
835b2d10 JG	500	BT_CTF_TYPE_ID_STRUCT) {
272df73e PP	501	ret = -1;
	502	goto end;
	503	}
	504
272df73e	505	bt_put(event_class->context);
835b2d10	506	event_class->context = bt_get(context);
272df73e PP	507	end:
	508	return ret;
	509
	510	}
	511
	512	void bt_ctf_event_class_get(struct bt_ctf_event_class *event_class)
	513	{
	514	bt_get(event_class);
	515	}
	516
	517	void bt_ctf_event_class_put(struct bt_ctf_event_class *event_class)
	518	{
	519	bt_put(event_class);
	520	}
	521
	522	BT_HIDDEN
	523	int bt_ctf_event_class_set_stream_id(struct bt_ctf_event_class *event_class,
	524	uint32_t stream_id)
	525	{
	526	int ret = 0;
	527	struct bt_value *obj;
	528
	529	obj = bt_value_integer_create_init(stream_id);
	530
	531	if (!obj) {
	532	ret = -1;
	533	goto end;
	534	}
	535
	536	ret = bt_ctf_attributes_set_field_value(event_class->attributes,
	537	"stream_id", obj);
	538
	539	if (event_class->frozen) {
	540	bt_ctf_attributes_freeze(event_class->attributes);
	541	}
	542
	543	end:
	544	BT_PUT(obj);
	545	return ret;
	546	}
	547
	548	static
	549	void bt_ctf_event_class_destroy(struct bt_object *obj)
	550	{
	551	struct bt_ctf_event_class *event_class;
	552
	553	event_class = container_of(obj, struct bt_ctf_event_class, base);
	554	bt_ctf_attributes_destroy(event_class->attributes);
	555	bt_put(event_class->context);
	556	bt_put(event_class->fields);
	557	g_free(event_class);
	558	}
	559
	560	BT_HIDDEN
	561	void bt_ctf_event_class_freeze(struct bt_ctf_event_class *event_class)
	562	{
	563	assert(event_class);
	564	event_class->frozen = 1;
5990dd44 JG	565	event_class->name = bt_ctf_event_class_get_name(event_class);
5990dd44 JG	566	event_class->id = bt_ctf_event_class_get_id(event_class);
272df73e PP	567	bt_ctf_field_type_freeze(event_class->context);
	568	bt_ctf_field_type_freeze(event_class->fields);
	569	bt_ctf_attributes_freeze(event_class->attributes);
	570	}
	571
	572	BT_HIDDEN
	573	int bt_ctf_event_class_serialize(struct bt_ctf_event_class *event_class,
	574	struct metadata_context *context)
	575	{
	576	int i;
	577	int count;
	578	int ret = 0;
	579	struct bt_value *attr_value = NULL;
	580
	581	assert(event_class);
	582	assert(context);
	583
	584	context->current_indentation_level = 1;
	585	g_string_assign(context->field_name, "");
	586	g_string_append(context->string, "event {\n");
	587	count = bt_ctf_event_class_get_attribute_count(event_class);
	588
	589	if (count < 0) {
	590	ret = -1;
	591	goto end;
	592	}
	593
	594	for (i = 0; i < count; ++i) {
	595	const char *attr_name = NULL;
	596
	597	attr_name = bt_ctf_event_class_get_attribute_name(
	598	event_class, i);
	599	attr_value = bt_ctf_event_class_get_attribute_value(
	600	event_class, i);
	601
	602	if (!attr_name \|\| !attr_value) {
	603	ret = -1;
	604	goto end;
	605	}
	606
	607	switch (bt_value_get_type(attr_value)) {
	608	case BT_VALUE_TYPE_INTEGER:
	609	{
	610	int64_t value;
	611
	612	ret = bt_value_integer_get(attr_value, &value);
	613
	614	if (ret) {
	615	goto end;
	616	}
	617
	618	g_string_append_printf(context->string,
	619	"\t%s = %" PRId64 ";\n", attr_name, value);
	620	break;
	621	}
	622
	623	case BT_VALUE_TYPE_STRING:
	624	{
	625	const char *value;
	626
	627	ret = bt_value_string_get(attr_value, &value);
	628
	629	if (ret) {
	630	goto end;
631	}
632
633	g_string_append_printf(context->string,
634	"\t%s = \"%s\";\n", attr_name, value);
635	break;
636	}
637
638	default:
639	/* should never happen */
640	assert(false);
641	break;
642	}
643
644	BT_PUT(attr_value);
645	}
646
647	if (event_class->context) {
648	g_string_append(context->string, "\tcontext := ");
649	ret = bt_ctf_field_type_serialize(event_class->context,
650	context);
651	if (ret) {
652	goto end;
653	}
654	g_string_append(context->string, ";\n");
655	}
656
657	if (event_class->fields) {
658	g_string_append(context->string, "\tfields := ");
659	ret = bt_ctf_field_type_serialize(event_class->fields, context);
660	if (ret) {
661	goto end;
662	}
663	g_string_append(context->string, ";\n");
664	}
665
666	g_string_append(context->string, "};\n\n");
667	end:
668	context->current_indentation_level = 0;
669	BT_PUT(attr_value);
670	return ret;
671	}
672
673	void bt_ctf_event_class_set_native_byte_order(
674	struct bt_ctf_event_class *event_class,
675	int byte_order)
676	{
677	if (!event_class) {
678	return;
679	}
680
681	assert(byte_order == 0 \|\| byte_order == LITTLE_ENDIAN \|\|
682	byte_order == BIG_ENDIAN);
683
684	bt_ctf_field_type_set_native_byte_order(event_class->context,
685	byte_order);
686	bt_ctf_field_type_set_native_byte_order(event_class->fields,
687	byte_order);
688	}