4 * Babeltrace Plugin Component
6 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
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
29 #include <babeltrace/graph/private-component.h>
30 #include <babeltrace/graph/component.h>
31 #include <babeltrace/graph/component-internal.h>
32 #include <babeltrace/graph/component-class-internal.h>
33 #include <babeltrace/graph/component-source-internal.h>
34 #include <babeltrace/graph/component-filter-internal.h>
35 #include <babeltrace/graph/component-sink-internal.h>
36 #include <babeltrace/graph/private-connection.h>
37 #include <babeltrace/graph/connection-internal.h>
38 #include <babeltrace/graph/graph-internal.h>
39 #include <babeltrace/graph/notification-iterator-internal.h>
40 #include <babeltrace/graph/private-notification-iterator.h>
41 #include <babeltrace/babeltrace-internal.h>
42 #include <babeltrace/compiler-internal.h>
43 #include <babeltrace/ref.h>
46 struct bt_component
* (* const component_create_funcs
[])(
47 struct bt_component_class
*, struct bt_value
*) = {
48 [BT_COMPONENT_CLASS_TYPE_SOURCE
] = bt_component_source_create
,
49 [BT_COMPONENT_CLASS_TYPE_SINK
] = bt_component_sink_create
,
50 [BT_COMPONENT_CLASS_TYPE_FILTER
] = bt_component_filter_create
,
54 void (*component_destroy_funcs
[])(struct bt_component
*) = {
55 [BT_COMPONENT_CLASS_TYPE_SOURCE
] = bt_component_source_destroy
,
56 [BT_COMPONENT_CLASS_TYPE_SINK
] = bt_component_sink_destroy
,
57 [BT_COMPONENT_CLASS_TYPE_FILTER
] = bt_component_filter_destroy
,
61 enum bt_component_status (* const component_validation_funcs
[])(
62 struct bt_component
*) = {
63 [BT_COMPONENT_CLASS_TYPE_SOURCE
] = bt_component_source_validate
,
64 [BT_COMPONENT_CLASS_TYPE_SINK
] = bt_component_sink_validate
,
65 [BT_COMPONENT_CLASS_TYPE_FILTER
] = bt_component_filter_validate
,
69 void bt_component_destroy(struct bt_object
*obj
)
71 struct bt_component
*component
= NULL
;
72 struct bt_component_class
*component_class
= NULL
;
78 component
= container_of(obj
, struct bt_component
, base
);
79 component_class
= component
->class;
82 * User data is destroyed first, followed by the concrete component
85 if (component
->class->methods
.finalize
) {
86 component
->class->methods
.finalize(
87 bt_private_component_from_component(component
));
90 if (component
->destroy
) {
91 component
->destroy(component
);
94 if (component
->input_ports
) {
95 g_ptr_array_free(component
->input_ports
, TRUE
);
98 if (component
->output_ports
) {
99 g_ptr_array_free(component
->output_ports
, TRUE
);
102 g_string_free(component
->name
, TRUE
);
103 bt_put(component_class
);
107 struct bt_component
*bt_component_from_private_component(
108 struct bt_private_component
*private_component
)
110 return bt_get(bt_component_from_private(private_component
));
113 enum bt_component_class_type
bt_component_get_class_type(
114 struct bt_component
*component
)
116 return component
? component
->class->type
: BT_COMPONENT_CLASS_TYPE_UNKNOWN
;
120 struct bt_port
*bt_component_add_port(
121 struct bt_component
*component
, GPtrArray
*ports
,
122 enum bt_port_type port_type
, const char *name
)
125 struct bt_port
*new_port
= NULL
;
126 struct bt_graph
*graph
= NULL
;
128 if (!name
|| strlen(name
) == 0) {
132 /* Look for a port having the same name. */
133 for (i
= 0; i
< ports
->len
; i
++) {
134 const char *port_name
;
135 struct bt_port
*port
= g_ptr_array_index(
138 port_name
= bt_port_get_name(port
);
143 if (!strcmp(name
, port_name
)) {
144 /* Port name clash, abort. */
149 new_port
= bt_port_create(component
, port_type
, name
);
155 * No name clash, add the port.
156 * The component is now the port's parent; it should _not_
157 * hold a reference to the port since the port's lifetime
158 * is now protected by the component's own lifetime.
160 g_ptr_array_add(ports
, new_port
);
163 * Notify the graph's creator that a new port was added.
165 graph
= bt_component_get_graph(component
);
167 bt_graph_notify_port_added(graph
, new_port
);
176 uint64_t bt_component_get_input_port_count(struct bt_component
*comp
)
179 return comp
->input_ports
->len
;
183 uint64_t bt_component_get_output_port_count(struct bt_component
*comp
)
186 return comp
->output_ports
->len
;
189 struct bt_component
*bt_component_create_with_init_method_data(
190 struct bt_component_class
*component_class
, const char *name
,
191 struct bt_value
*params
, void *init_method_data
)
194 struct bt_component
*component
= NULL
;
195 enum bt_component_class_type type
;
196 struct bt_port
*default_port
= NULL
;
198 if (!component_class
) {
202 type
= bt_component_class_get_type(component_class
);
203 if (type
<= BT_COMPONENT_CLASS_TYPE_UNKNOWN
||
204 type
> BT_COMPONENT_CLASS_TYPE_FILTER
) {
208 component
= component_create_funcs
[type
](component_class
, params
);
213 bt_object_init(component
, bt_component_destroy
);
214 component
->class = bt_get(component_class
);
215 component
->destroy
= component_destroy_funcs
[type
];
216 component
->name
= g_string_new(name
);
217 if (!component
->name
) {
222 component
->input_ports
= g_ptr_array_new_with_free_func(
224 if (!component
->input_ports
) {
229 component
->output_ports
= g_ptr_array_new_with_free_func(
231 if (!component
->output_ports
) {
236 if (type
== BT_COMPONENT_CLASS_TYPE_SOURCE
||
237 type
== BT_COMPONENT_CLASS_TYPE_FILTER
) {
238 default_port
= bt_component_add_port(component
,
239 component
->output_ports
, BT_PORT_TYPE_OUTPUT
,
240 DEFAULT_OUTPUT_PORT_NAME
);
246 BT_PUT(default_port
);
249 if (type
== BT_COMPONENT_CLASS_TYPE_FILTER
||
250 type
== BT_COMPONENT_CLASS_TYPE_SINK
) {
251 default_port
= bt_component_add_port(component
,
252 component
->input_ports
, BT_PORT_TYPE_INPUT
,
253 DEFAULT_INPUT_PORT_NAME
);
259 BT_PUT(default_port
);
262 component
->initializing
= true;
264 if (component_class
->methods
.init
) {
265 ret
= component_class
->methods
.init(
266 bt_private_component_from_component(component
), params
,
268 component
->initializing
= false;
269 if (ret
!= BT_COMPONENT_STATUS_OK
) {
275 component
->initializing
= false;
276 ret
= component_validation_funcs
[type
](component
);
277 if (ret
!= BT_COMPONENT_STATUS_OK
) {
282 bt_component_class_freeze(component
->class);
284 bt_put(default_port
);
288 struct bt_component
*bt_component_create(
289 struct bt_component_class
*component_class
, const char *name
,
290 struct bt_value
*params
)
292 return bt_component_create_with_init_method_data(component_class
, name
,
296 const char *bt_component_get_name(struct bt_component
*component
)
298 const char *ret
= NULL
;
304 ret
= component
->name
->len
== 0 ? NULL
: component
->name
->str
;
309 enum bt_component_status
bt_component_set_name(struct bt_component
*component
,
312 enum bt_component_status ret
= BT_COMPONENT_STATUS_OK
;
314 if (!component
|| !name
|| name
[0] == '\0') {
315 ret
= BT_COMPONENT_STATUS_INVALID
;
319 g_string_assign(component
->name
, name
);
324 struct bt_component_class
*bt_component_get_class(
325 struct bt_component
*component
)
327 return component
? bt_get(component
->class) : NULL
;
330 void *bt_private_component_get_user_data(
331 struct bt_private_component
*private_component
)
333 struct bt_component
*component
=
334 bt_component_from_private(private_component
);
336 return component
? component
->user_data
: NULL
;
339 enum bt_component_status
bt_private_component_set_user_data(
340 struct bt_private_component
*private_component
,
343 struct bt_component
*component
=
344 bt_component_from_private(private_component
);
345 enum bt_component_status ret
= BT_COMPONENT_STATUS_OK
;
347 if (!component
|| !component
->initializing
) {
348 ret
= BT_COMPONENT_STATUS_INVALID
;
352 component
->user_data
= data
;
358 void bt_component_set_graph(struct bt_component
*component
,
359 struct bt_graph
*graph
)
361 struct bt_object
*parent
= bt_object_get_parent(&component
->base
);
363 assert(!parent
|| parent
== &graph
->base
);
365 bt_object_set_parent(component
, &graph
->base
);
370 struct bt_graph
*bt_component_get_graph(
371 struct bt_component
*component
)
373 return (struct bt_graph
*) bt_object_get_parent(&component
->base
);
377 struct bt_port
*bt_component_get_port(GPtrArray
*ports
, const char *name
)
380 struct bt_port
*ret_port
= NULL
;
384 for (i
= 0; i
< ports
->len
; i
++) {
385 struct bt_port
*port
= g_ptr_array_index(ports
, i
);
386 const char *port_name
= bt_port_get_name(port
);
392 if (!strcmp(name
, port_name
)) {
393 ret_port
= bt_get(port
);
402 struct bt_port
*bt_component_get_input_port(struct bt_component
*comp
,
407 return bt_component_get_port(comp
->input_ports
, name
);
411 struct bt_port
*bt_component_get_output_port(struct bt_component
*comp
,
416 return bt_component_get_port(comp
->output_ports
, name
);
420 struct bt_port
*bt_component_get_port_at_index(GPtrArray
*ports
, int index
)
422 struct bt_port
*port
= NULL
;
424 if (index
< 0 || index
>= ports
->len
) {
428 port
= bt_get(g_ptr_array_index(ports
, index
));
434 struct bt_port
*bt_component_get_input_port_at_index(struct bt_component
*comp
,
439 return bt_component_get_port_at_index(comp
->input_ports
, index
);
443 struct bt_port
*bt_component_get_output_port_at_index(struct bt_component
*comp
,
448 return bt_component_get_port_at_index(comp
->output_ports
, index
);
452 struct bt_port
*bt_component_add_input_port(
453 struct bt_component
*component
, const char *name
)
455 return bt_component_add_port(component
, component
->input_ports
,
456 BT_PORT_TYPE_INPUT
, name
);
460 struct bt_port
*bt_component_add_output_port(
461 struct bt_component
*component
, const char *name
)
463 return bt_component_add_port(component
, component
->output_ports
,
464 BT_PORT_TYPE_OUTPUT
, name
);
468 void bt_component_remove_port_at_index(struct bt_component
*component
,
469 GPtrArray
*ports
, size_t index
)
471 struct bt_port
*port
;
472 struct bt_graph
*graph
;
475 assert(index
< ports
->len
);
476 port
= g_ptr_array_index(ports
, index
);
478 /* Disconnect both ports of this port's connection, if any */
479 if (port
->connection
) {
480 bt_connection_disconnect_ports(port
->connection
);
483 /* Remove from parent's array of ports (weak refs) */
484 g_ptr_array_remove_index(ports
, index
);
486 /* Detach port from its component parent */
487 BT_PUT(port
->base
.parent
);
490 * Notify the graph's creator that a port is removed.
492 graph
= bt_component_get_graph(component
);
494 bt_graph_notify_port_removed(graph
, component
, port
);
500 enum bt_component_status
bt_component_remove_port(
501 struct bt_component
*component
, struct bt_port
*port
)
504 enum bt_component_status status
= BT_COMPONENT_STATUS_OK
;
505 GPtrArray
*ports
= NULL
;
507 if (!component
|| !port
) {
508 status
= BT_COMPONENT_STATUS_INVALID
;
512 if (bt_port_get_type(port
) == BT_PORT_TYPE_INPUT
) {
513 ports
= component
->input_ports
;
514 } else if (bt_port_get_type(port
) == BT_PORT_TYPE_OUTPUT
) {
515 ports
= component
->output_ports
;
520 for (i
= 0; i
< ports
->len
; i
++) {
521 struct bt_port
*cur_port
= g_ptr_array_index(ports
, i
);
523 if (cur_port
== port
) {
524 bt_component_remove_port_at_index(component
,
530 status
= BT_COMPONENT_STATUS_NOT_FOUND
;
536 enum bt_component_status
bt_component_accept_port_connection(
537 struct bt_component
*comp
, struct bt_port
*self_port
,
538 struct bt_port
*other_port
)
540 enum bt_component_status status
= BT_COMPONENT_STATUS_OK
;
546 if (comp
->class->methods
.accept_port_connection
) {
547 status
= comp
->class->methods
.accept_port_connection(
548 bt_private_component_from_component(comp
),
549 bt_private_port_from_port(self_port
),
557 void bt_component_port_connected(struct bt_component
*comp
,
558 struct bt_port
*self_port
, struct bt_port
*other_port
)
564 if (comp
->class->methods
.port_connected
) {
565 comp
->class->methods
.port_connected(
566 bt_private_component_from_component(comp
),
567 bt_private_port_from_port(self_port
), other_port
);
572 void bt_component_port_disconnected(struct bt_component
*comp
,
573 struct bt_port
*port
)
578 if (comp
->class->methods
.port_disconnected
) {
579 comp
->class->methods
.port_disconnected(
580 bt_private_component_from_component(comp
),
581 bt_private_port_from_port(port
));