[babeltrace.git] / lib / graph / component-class.c

/*
 * component-class.c
 *
 * Babeltrace Plugin Component Class
 *
 * Copyright 2016 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/compiler-internal.h>
#include <babeltrace/graph/component-class-internal.h>
#include <babeltrace/ref.h>
#include <babeltrace/types.h>
#include <glib.h>

static
void bt_component_class_destroy(struct bt_object *obj)
{
	struct bt_component_class *class;
	int i;

	assert(obj);
	class = container_of(obj, struct bt_component_class, base);

	/* Call destroy listeners in reverse registration order */
	for (i = class->destroy_listeners->len - 1; i >= 0; i--) {
		struct bt_component_class_destroy_listener *listener =
			&g_array_index(class->destroy_listeners,
				struct bt_component_class_destroy_listener,
				i);

		listener->func(class, listener->data);
	}

	if (class->name) {
		g_string_free(class->name, TRUE);
	}
	if (class->description) {
		g_string_free(class->description, TRUE);
	}
	if (class->help) {
		g_string_free(class->help, TRUE);
	}
	if (class->destroy_listeners) {
		g_array_free(class->destroy_listeners, TRUE);
	}

	g_free(class);
}

static
int bt_component_class_init(struct bt_component_class *class,
		enum bt_component_class_type type, const char *name)
{
	int ret = 0;

	bt_object_init(class, bt_component_class_destroy);
	class->type = type;
	class->name = g_string_new(name);
	if (!class->name) {
		goto error;
	}

	class->description = g_string_new(NULL);
	if (!class->description) {
		goto error;
	}

	class->help = g_string_new(NULL);
	if (!class->help) {
		goto error;
	}

	class->destroy_listeners = g_array_new(FALSE, TRUE,
		sizeof(struct bt_component_class_destroy_listener));
	if (!class->destroy_listeners) {
		goto error;
	}

	goto end;

error:
	BT_PUT(class);
	ret = -1;

end:
	return ret;
}

struct bt_component_class *bt_component_class_source_create(const char *name,
		bt_component_class_notification_iterator_next_method notification_iterator_next_method)
{
	struct bt_component_class_source *source_class = NULL;
	int ret;

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

	source_class = g_new0(struct bt_component_class_source, 1);
	if (!source_class) {
		goto end;
	}

	ret = bt_component_class_init(&source_class->parent,
		BT_COMPONENT_CLASS_TYPE_SOURCE, name);
	if (ret) {
		/*
		 * If bt_component_class_init() fails, the component
		 * class is put, therefore its memory is already
		 * freed.
		 */
		source_class = NULL;
		goto end;
	}

	source_class->methods.iterator.next = notification_iterator_next_method;

end:
	return &source_class->parent;
}

struct bt_component_class *bt_component_class_filter_create(const char *name,
		bt_component_class_notification_iterator_next_method notification_iterator_next_method)
{
	struct bt_component_class_filter *filter_class = NULL;
	int ret;

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

	filter_class = g_new0(struct bt_component_class_filter, 1);
	if (!filter_class) {
		goto end;
	}

	ret = bt_component_class_init(&filter_class->parent,
		BT_COMPONENT_CLASS_TYPE_FILTER, name);
	if (ret) {
		/*
		 * If bt_component_class_init() fails, the component
		 * class is put, therefore its memory is already
		 * freed.
		 */
		filter_class = NULL;
		goto end;
	}

	filter_class->methods.iterator.next = notification_iterator_next_method;

end:
	return &filter_class->parent;
}

struct bt_component_class *bt_component_class_sink_create(const char *name,
		bt_component_class_sink_consume_method consume_method)
{
	struct bt_component_class_sink *sink_class = NULL;
	int ret;

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

	sink_class = g_new0(struct bt_component_class_sink, 1);
	if (!sink_class) {
		goto end;
	}

	ret = bt_component_class_init(&sink_class->parent,
		BT_COMPONENT_CLASS_TYPE_SINK, name);
	if (ret) {
		/*
		 * If bt_component_class_init() fails, the component
		 * class is put, therefore its memory is already
		 * freed.
		 */
		sink_class = NULL;
		goto end;
	}

	sink_class->methods.consume = consume_method;

end:
	return &sink_class->parent;
}

int bt_component_class_set_init_method(
		struct bt_component_class *component_class,
		bt_component_class_init_method init_method)
{
	int ret = 0;

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

	component_class->methods.init = init_method;

end:
	return ret;
}

int bt_component_class_set_query_method(
		struct bt_component_class *component_class,
		bt_component_class_query_method query_method)
{
	int ret = 0;

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

	component_class->methods.query = query_method;

end:
	return ret;
}

int bt_component_class_set_accept_port_connection_method(
		struct bt_component_class *component_class,
		bt_component_class_accept_port_connection_method method)
{
	int ret = 0;

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

	component_class->methods.accept_port_connection = method;

end:
	return ret;
}

int bt_component_class_set_port_connected_method(
		struct bt_component_class *component_class,
		bt_component_class_port_connected_method method)
{
	int ret = 0;

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

	component_class->methods.port_connected = method;

end:
	return ret;
}

int bt_component_class_set_port_disconnected_method(
		struct bt_component_class *component_class,
		bt_component_class_port_disconnected_method method)
{
	int ret = 0;

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

	component_class->methods.port_disconnected = method;

end:
	return ret;
}

int bt_component_class_set_finalize_method(
		struct bt_component_class *component_class,
		bt_component_class_finalize_method finalize_method)
{
	int ret = 0;

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

	component_class->methods.finalize = finalize_method;

end:
	return ret;
}

int bt_component_class_source_set_notification_iterator_init_method(
		struct bt_component_class *component_class,
		bt_component_class_notification_iterator_init_method notification_iterator_init_method)
{
	struct bt_component_class_source *source_class;
	int ret = 0;

	if (!component_class || component_class->frozen ||
			!notification_iterator_init_method ||
			component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
		ret = -1;
		goto end;
	}

	source_class = container_of(component_class,
		struct bt_component_class_source, parent);
	source_class->methods.iterator.init = notification_iterator_init_method;

end:
	return ret;
}

int bt_component_class_source_set_notification_iterator_finalize_method(
		struct bt_component_class *component_class,
		bt_component_class_notification_iterator_finalize_method notification_iterator_finalize_method)
{
	struct bt_component_class_source *source_class;
	int ret = 0;

	if (!component_class || component_class->frozen ||
			!notification_iterator_finalize_method ||
			component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
		ret = -1;
		goto end;
	}

	source_class = container_of(component_class,
		struct bt_component_class_source, parent);
	source_class->methods.iterator.finalize =
		notification_iterator_finalize_method;

end:
	return ret;
}

int bt_component_class_source_set_notification_iterator_seek_time_method(
		struct bt_component_class *component_class,
		bt_component_class_notification_iterator_seek_time_method notification_iterator_seek_time_method)
{
	struct bt_component_class_source *source_class;
	int ret = 0;

	if (!component_class || component_class->frozen ||
			!notification_iterator_seek_time_method ||
			component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
		ret = -1;
		goto end;
	}

	source_class = container_of(component_class,
		struct bt_component_class_source, parent);
	source_class->methods.iterator.seek_time =
		notification_iterator_seek_time_method;

end:
	return ret;
}

int bt_component_class_filter_set_notification_iterator_init_method(
		struct bt_component_class *component_class,
		bt_component_class_notification_iterator_init_method notification_iterator_init_method)
{
	struct bt_component_class_filter *filter_class;
	int ret = 0;

	if (!component_class || component_class->frozen ||
			!notification_iterator_init_method ||
			component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) {
		ret = -1;
		goto end;
	}

	filter_class = container_of(component_class,
		struct bt_component_class_filter, parent);
	filter_class->methods.iterator.init = notification_iterator_init_method;

end:
	return ret;
}

int bt_component_class_filter_set_notification_iterator_finalize_method(
		struct bt_component_class *component_class,
		bt_component_class_notification_iterator_finalize_method notification_iterator_finalize_method)
{
	struct bt_component_class_filter *filter_class;
	int ret = 0;

	if (!component_class || component_class->frozen ||
			!notification_iterator_finalize_method ||
			component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) {
		ret = -1;
		goto end;
	}

	filter_class = container_of(component_class,
		struct bt_component_class_filter, parent);
	filter_class->methods.iterator.finalize =
		notification_iterator_finalize_method;

end:
	return ret;
}

int bt_component_class_filter_set_notification_iterator_seek_time_method(
		struct bt_component_class *component_class,
		bt_component_class_notification_iterator_seek_time_method notification_iterator_seek_time_method)
{
	struct bt_component_class_filter *filter_class;
	int ret = 0;

	if (!component_class || component_class->frozen ||
			!notification_iterator_seek_time_method ||
			component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) {
		ret = -1;
		goto end;
	}

	filter_class = container_of(component_class,
		struct bt_component_class_filter, parent);
	filter_class->methods.iterator.seek_time =
		notification_iterator_seek_time_method;

end:
	return ret;
}

int bt_component_class_set_description(
		struct bt_component_class *component_class,
		const char *description)
{
	int ret = 0;

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

	g_string_assign(component_class->description, description);

end:
	return ret;
}

int bt_component_class_set_help(
		struct bt_component_class *component_class,
		const char *help)
{
	int ret = 0;

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

	g_string_assign(component_class->help, help);

end:
	return ret;
}

const char *bt_component_class_get_name(
		struct bt_component_class *component_class)
{
	return component_class ? component_class->name->str : NULL;
}

enum bt_component_class_type bt_component_class_get_type(
		struct bt_component_class *component_class)
{
	return component_class ? component_class->type :
			BT_COMPONENT_CLASS_TYPE_UNKNOWN;
}

const char *bt_component_class_get_description(
		struct bt_component_class *component_class)
{
	return component_class && component_class->description &&
		component_class->description->str[0] != '\0' ?
		component_class->description->str : NULL;
}

const char *bt_component_class_get_help(
		struct bt_component_class *component_class)
{
	return component_class && component_class->help &&
		component_class->help->str[0] != '\0' ?
		component_class->help->str : NULL;
}

BT_HIDDEN
void bt_component_class_add_destroy_listener(struct bt_component_class *class,
		bt_component_class_destroy_listener_func func, void *data)
{
	struct bt_component_class_destroy_listener listener;

	assert(class);
	assert(func);
	listener.func = func;
	listener.data = data;
	g_array_append_val(class->destroy_listeners, listener);
}

int bt_component_class_freeze(
		struct bt_component_class *component_class)
{
	int ret = 0;

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

	component_class->frozen = BT_TRUE;

end:
	return ret;
}

struct bt_value *bt_component_class_query(
		struct bt_component_class *component_class,
		const char *object, struct bt_value *params)
{
	struct bt_value *results = NULL;

	if (!component_class || !object || !params ||
			!component_class->methods.query) {
		goto end;
	}

	results = component_class->methods.query(component_class,
		object, params);

end:
	return results;
}
Commit	Line	Data
	1	/*
	2	* component-class.c
	3	*
	4	* Babeltrace Plugin Component Class
	5	*
	6	* Copyright 2016 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/compiler-internal.h>
	30	#include <babeltrace/graph/component-class-internal.h>
	31	#include <babeltrace/ref.h>
	32	#include <babeltrace/types.h>
	33	#include <glib.h>
	34
	35	static
	36	void bt_component_class_destroy(struct bt_object *obj)
	37	{
	38	struct bt_component_class *class;
	39	int i;
	40
	41	assert(obj);
	42	class = container_of(obj, struct bt_component_class, base);
	43
	44	/* Call destroy listeners in reverse registration order */
	45	for (i = class->destroy_listeners->len - 1; i >= 0; i--) {
	46	struct bt_component_class_destroy_listener *listener =
	47	&g_array_index(class->destroy_listeners,
	48	struct bt_component_class_destroy_listener,
	49	i);
	50
	51	listener->func(class, listener->data);
	52	}
	53
	54	if (class->name) {
	55	g_string_free(class->name, TRUE);
	56	}
	57	if (class->description) {
	58	g_string_free(class->description, TRUE);
	59	}
	60	if (class->help) {
	61	g_string_free(class->help, TRUE);
	62	}
	63	if (class->destroy_listeners) {
	64	g_array_free(class->destroy_listeners, TRUE);
	65	}
	66
	67	g_free(class);
	68	}
	69
	70	static
	71	int bt_component_class_init(struct bt_component_class *class,
	72	enum bt_component_class_type type, const char *name)
	73	{
	74	int ret = 0;
	75
	76	bt_object_init(class, bt_component_class_destroy);
	77	class->type = type;
	78	class->name = g_string_new(name);
	79	if (!class->name) {
	80	goto error;
	81	}
	82
	83	class->description = g_string_new(NULL);
	84	if (!class->description) {
	85	goto error;
	86	}
	87
	88	class->help = g_string_new(NULL);
	89	if (!class->help) {
	90	goto error;
	91	}
	92
	93	class->destroy_listeners = g_array_new(FALSE, TRUE,
	94	sizeof(struct bt_component_class_destroy_listener));
	95	if (!class->destroy_listeners) {
	96	goto error;
	97	}
	98
	99	goto end;
	100
	101	error:
	102	BT_PUT(class);
	103	ret = -1;
	104
	105	end:
	106	return ret;
	107	}
	108
	109	struct bt_component_class bt_component_class_source_create(const char name,
	110	bt_component_class_notification_iterator_next_method notification_iterator_next_method)
	111	{
	112	struct bt_component_class_source *source_class = NULL;
	113	int ret;
	114
	115	if (!name \|\| !notification_iterator_next_method) {
	116	goto end;
	117	}
	118
	119	source_class = g_new0(struct bt_component_class_source, 1);
	120	if (!source_class) {
	121	goto end;
	122	}
	123
	124	ret = bt_component_class_init(&source_class->parent,
	125	BT_COMPONENT_CLASS_TYPE_SOURCE, name);
	126	if (ret) {
	127	/*
	128	* If bt_component_class_init() fails, the component
	129	* class is put, therefore its memory is already
	130	* freed.
	131	*/
	132	source_class = NULL;
	133	goto end;
	134	}
	135
	136	source_class->methods.iterator.next = notification_iterator_next_method;
	137
	138	end:
	139	return &source_class->parent;
	140	}
	141
	142	struct bt_component_class bt_component_class_filter_create(const char name,
	143	bt_component_class_notification_iterator_next_method notification_iterator_next_method)
	144	{
	145	struct bt_component_class_filter *filter_class = NULL;
	146	int ret;
	147
	148	if (!name \|\| !notification_iterator_next_method) {
	149	goto end;
	150	}
	151
	152	filter_class = g_new0(struct bt_component_class_filter, 1);
	153	if (!filter_class) {
	154	goto end;
	155	}
	156
	157	ret = bt_component_class_init(&filter_class->parent,
	158	BT_COMPONENT_CLASS_TYPE_FILTER, name);
	159	if (ret) {
	160	/*
	161	* If bt_component_class_init() fails, the component
	162	* class is put, therefore its memory is already
	163	* freed.
	164	*/
	165	filter_class = NULL;
	166	goto end;
	167	}
	168
	169	filter_class->methods.iterator.next = notification_iterator_next_method;
	170
	171	end:
	172	return &filter_class->parent;
	173	}
	174
	175	struct bt_component_class bt_component_class_sink_create(const char name,
	176	bt_component_class_sink_consume_method consume_method)
	177	{
	178	struct bt_component_class_sink *sink_class = NULL;
	179	int ret;
	180
	181	if (!name \|\| !consume_method) {
	182	goto end;
	183	}
	184
	185	sink_class = g_new0(struct bt_component_class_sink, 1);
	186	if (!sink_class) {
	187	goto end;
	188	}
	189
	190	ret = bt_component_class_init(&sink_class->parent,
	191	BT_COMPONENT_CLASS_TYPE_SINK, name);
	192	if (ret) {
	193	/*
	194	* If bt_component_class_init() fails, the component
	195	* class is put, therefore its memory is already
	196	* freed.
	197	*/
	198	sink_class = NULL;
	199	goto end;
	200	}
	201
	202	sink_class->methods.consume = consume_method;
	203
	204	end:
	205	return &sink_class->parent;
	206	}
	207
	208	int bt_component_class_set_init_method(
	209	struct bt_component_class *component_class,
	210	bt_component_class_init_method init_method)
	211	{
	212	int ret = 0;
	213
	214	if (!component_class \|\| component_class->frozen \|\| !init_method) {
	215	ret = -1;
	216	goto end;
	217	}
	218
	219	component_class->methods.init = init_method;
	220
	221	end:
	222	return ret;
	223	}
	224
	225	int bt_component_class_set_query_method(
	226	struct bt_component_class *component_class,
	227	bt_component_class_query_method query_method)
	228	{
	229	int ret = 0;
	230
	231	if (!component_class \|\| component_class->frozen \|\| !query_method) {
	232	ret = -1;
	233	goto end;
	234	}
	235
	236	component_class->methods.query = query_method;
	237
	238	end:
	239	return ret;
	240	}
	241
	242	int bt_component_class_set_accept_port_connection_method(
	243	struct bt_component_class *component_class,
	244	bt_component_class_accept_port_connection_method method)
	245	{
	246	int ret = 0;
	247
	248	if (!component_class \|\| component_class->frozen \|\| !method) {
	249	ret = -1;
	250	goto end;
	251	}
	252
	253	component_class->methods.accept_port_connection = method;
	254
	255	end:
	256	return ret;
	257	}
	258
	259	int bt_component_class_set_port_connected_method(
	260	struct bt_component_class *component_class,
	261	bt_component_class_port_connected_method method)
	262	{
	263	int ret = 0;
	264
	265	if (!component_class \|\| component_class->frozen \|\| !method) {
	266	ret = -1;
	267	goto end;
	268	}
	269
	270	component_class->methods.port_connected = method;
	271
	272	end:
	273	return ret;
	274	}
	275
	276	int bt_component_class_set_port_disconnected_method(
	277	struct bt_component_class *component_class,
	278	bt_component_class_port_disconnected_method method)
	279	{
	280	int ret = 0;
	281
	282	if (!component_class \|\| component_class->frozen \|\| !method) {
	283	ret = -1;
	284	goto end;
	285	}
	286
	287	component_class->methods.port_disconnected = method;
	288
	289	end:
	290	return ret;
	291	}
	292
	293	int bt_component_class_set_finalize_method(
	294	struct bt_component_class *component_class,
	295	bt_component_class_finalize_method finalize_method)
	296	{
	297	int ret = 0;
	298
	299	if (!component_class \|\| component_class->frozen \|\| !finalize_method) {
	300	ret = -1;
	301	goto end;
	302	}
	303
	304	component_class->methods.finalize = finalize_method;
	305
	306	end:
	307	return ret;
	308	}
	309
	310	int bt_component_class_source_set_notification_iterator_init_method(
	311	struct bt_component_class *component_class,
	312	bt_component_class_notification_iterator_init_method notification_iterator_init_method)
	313	{
	314	struct bt_component_class_source *source_class;
	315	int ret = 0;
	316
	317	if (!component_class \|\| component_class->frozen \|\|
	318	!notification_iterator_init_method \|\|
	319	component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
	320	ret = -1;
	321	goto end;
	322	}
	323
	324	source_class = container_of(component_class,
	325	struct bt_component_class_source, parent);
	326	source_class->methods.iterator.init = notification_iterator_init_method;
	327
	328	end:
	329	return ret;
	330	}
	331
	332	int bt_component_class_source_set_notification_iterator_finalize_method(
	333	struct bt_component_class *component_class,
	334	bt_component_class_notification_iterator_finalize_method notification_iterator_finalize_method)
	335	{
	336	struct bt_component_class_source *source_class;
	337	int ret = 0;
	338
	339	if (!component_class \|\| component_class->frozen \|\|
	340	!notification_iterator_finalize_method \|\|
	341	component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
	342	ret = -1;
	343	goto end;
	344	}
	345
	346	source_class = container_of(component_class,
	347	struct bt_component_class_source, parent);
	348	source_class->methods.iterator.finalize =
	349	notification_iterator_finalize_method;
	350
	351	end:
	352	return ret;
	353	}
	354
	355	int bt_component_class_source_set_notification_iterator_seek_time_method(
	356	struct bt_component_class *component_class,
	357	bt_component_class_notification_iterator_seek_time_method notification_iterator_seek_time_method)
	358	{
	359	struct bt_component_class_source *source_class;
	360	int ret = 0;
	361
	362	if (!component_class \|\| component_class->frozen \|\|
	363	!notification_iterator_seek_time_method \|\|
	364	component_class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
	365	ret = -1;
	366	goto end;
	367	}
	368
	369	source_class = container_of(component_class,
	370	struct bt_component_class_source, parent);
	371	source_class->methods.iterator.seek_time =
	372	notification_iterator_seek_time_method;
	373
	374	end:
	375	return ret;
	376	}
	377
	378	int bt_component_class_filter_set_notification_iterator_init_method(
	379	struct bt_component_class *component_class,
	380	bt_component_class_notification_iterator_init_method notification_iterator_init_method)
	381	{
	382	struct bt_component_class_filter *filter_class;
	383	int ret = 0;
	384
	385	if (!component_class \|\| component_class->frozen \|\|
	386	!notification_iterator_init_method \|\|
	387	component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) {
	388	ret = -1;
	389	goto end;
	390	}
	391
	392	filter_class = container_of(component_class,
	393	struct bt_component_class_filter, parent);
	394	filter_class->methods.iterator.init = notification_iterator_init_method;
	395
	396	end:
	397	return ret;
	398	}
	399
	400	int bt_component_class_filter_set_notification_iterator_finalize_method(
	401	struct bt_component_class *component_class,
	402	bt_component_class_notification_iterator_finalize_method notification_iterator_finalize_method)
	403	{
	404	struct bt_component_class_filter *filter_class;
	405	int ret = 0;
	406
	407	if (!component_class \|\| component_class->frozen \|\|
	408	!notification_iterator_finalize_method \|\|
	409	component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) {
	410	ret = -1;
	411	goto end;
	412	}
	413
	414	filter_class = container_of(component_class,
	415	struct bt_component_class_filter, parent);
	416	filter_class->methods.iterator.finalize =
	417	notification_iterator_finalize_method;
	418
	419	end:
	420	return ret;
	421	}
	422
	423	int bt_component_class_filter_set_notification_iterator_seek_time_method(
	424	struct bt_component_class *component_class,
	425	bt_component_class_notification_iterator_seek_time_method notification_iterator_seek_time_method)
	426	{
	427	struct bt_component_class_filter *filter_class;
	428	int ret = 0;
	429
	430	if (!component_class \|\| component_class->frozen \|\|
	431	!notification_iterator_seek_time_method \|\|
	432	component_class->type != BT_COMPONENT_CLASS_TYPE_FILTER) {
	433	ret = -1;
	434	goto end;
	435	}
	436
	437	filter_class = container_of(component_class,
	438	struct bt_component_class_filter, parent);
	439	filter_class->methods.iterator.seek_time =
	440	notification_iterator_seek_time_method;
	441
	442	end:
	443	return ret;
	444	}
	445
	446	int bt_component_class_set_description(
	447	struct bt_component_class *component_class,
	448	const char *description)
	449	{
	450	int ret = 0;
	451
	452	if (!component_class \|\| component_class->frozen \|\| !description) {
	453	ret = -1;
	454	goto end;
	455	}
	456
	457	g_string_assign(component_class->description, description);
	458
	459	end:
	460	return ret;
	461	}
	462
	463	int bt_component_class_set_help(
	464	struct bt_component_class *component_class,
	465	const char *help)
	466	{
	467	int ret = 0;
	468
	469	if (!component_class \|\| component_class->frozen \|\| !help) {
	470	ret = -1;
	471	goto end;
	472	}
	473
	474	g_string_assign(component_class->help, help);
	475
	476	end:
	477	return ret;
	478	}
	479
	480	const char *bt_component_class_get_name(
	481	struct bt_component_class *component_class)
	482	{
	483	return component_class ? component_class->name->str : NULL;
	484	}
	485
	486	enum bt_component_class_type bt_component_class_get_type(
	487	struct bt_component_class *component_class)
	488	{
	489	return component_class ? component_class->type :
	490	BT_COMPONENT_CLASS_TYPE_UNKNOWN;
	491	}
	492
	493	const char *bt_component_class_get_description(
	494	struct bt_component_class *component_class)
	495	{
	496	return component_class && component_class->description &&
	497	component_class->description->str[0] != '\0' ?
	498	component_class->description->str : NULL;
	499	}
	500
	501	const char *bt_component_class_get_help(
	502	struct bt_component_class *component_class)
	503	{
	504	return component_class && component_class->help &&
	505	component_class->help->str[0] != '\0' ?
	506	component_class->help->str : NULL;
	507	}
	508
	509	BT_HIDDEN
	510	void bt_component_class_add_destroy_listener(struct bt_component_class *class,
	511	bt_component_class_destroy_listener_func func, void *data)
	512	{
	513	struct bt_component_class_destroy_listener listener;
	514
	515	assert(class);
	516	assert(func);
	517	listener.func = func;
	518	listener.data = data;
	519	g_array_append_val(class->destroy_listeners, listener);
	520	}
	521
	522	int bt_component_class_freeze(
	523	struct bt_component_class *component_class)
	524	{
	525	int ret = 0;
	526
	527	if (!component_class) {
	528	ret = -1;
	529	goto end;
	530	}
	531
	532	component_class->frozen = BT_TRUE;
	533
	534	end:
	535	return ret;
	536	}
	537
	538	struct bt_value *bt_component_class_query(
	539	struct bt_component_class *component_class,
	540	const char object, struct bt_value params)
	541	{
	542	struct bt_value *results = NULL;
	543
	544	if (!component_class \|\| !object \|\| !params \|\|
	545	!component_class->methods.query) {
	546	goto end;
	547	}
	548
	549	results = component_class->methods.query(component_class,
	550	object, params);
	551
	552	end:
	553	return results;
	554	}