2 * Copyright (c) 2019 Philippe Proulx <pproulx@efficios.com>
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 #define BT_LOG_TAG "LIB/ERROR"
24 #include "lib/logging.h"
28 #include <babeltrace2/babeltrace.h>
31 #include "graph/message/iterator.h"
32 #include "graph/component.h"
33 #include "graph/component-class.h"
34 #include "common/assert.h"
35 #include "lib/assert-pre.h"
36 #include "lib/func-status.h"
38 #define BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(_cause, _exp_type) \
39 BT_ASSERT_PRE(((const struct bt_error_cause *) (_cause))->actor_type == _exp_type, \
40 "Unexpected error cause's actor type: type=%s, exp-type=%s", \
41 bt_error_cause_actor_type_string(((const struct bt_error_cause *) (_cause))->actor_type), \
42 bt_error_cause_actor_type_string(_exp_type))
45 void fini_component_class_id(
46 struct bt_error_cause_component_class_id
*comp_class_id
)
48 BT_ASSERT(comp_class_id
);
50 if (comp_class_id
->name
) {
51 g_string_free(comp_class_id
->name
, TRUE
);
52 comp_class_id
->name
= NULL
;
55 if (comp_class_id
->plugin_name
) {
56 g_string_free(comp_class_id
->plugin_name
, TRUE
);
57 comp_class_id
->plugin_name
= NULL
;
62 void fini_error_cause(struct bt_error_cause
*cause
)
65 BT_LIB_LOGD("Finalizing error cause: %!+r", cause
);
67 if (cause
->module_name
) {
68 g_string_free(cause
->module_name
, TRUE
);
69 cause
->module_name
= NULL
;
72 if (cause
->file_name
) {
73 g_string_free(cause
->file_name
, TRUE
);
74 cause
->file_name
= NULL
;
78 g_string_free(cause
->message
, TRUE
);
79 cause
->message
= NULL
;
84 void destroy_error_cause(struct bt_error_cause
*cause
)
90 BT_LIB_LOGD("Destroying error cause: %!+r", cause
);
92 switch (cause
->actor_type
) {
93 case BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT
:
95 struct bt_error_cause_component_actor
*spec_cause
=
98 if (spec_cause
->comp_name
) {
99 g_string_free(spec_cause
->comp_name
, TRUE
);
100 spec_cause
->comp_name
= NULL
;
103 fini_component_class_id(&spec_cause
->comp_class_id
);
106 case BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT_CLASS
:
108 struct bt_error_cause_component_class_actor
*spec_cause
=
111 fini_component_class_id(&spec_cause
->comp_class_id
);
114 case BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR
:
116 struct bt_error_cause_message_iterator_actor
*spec_cause
=
119 if (spec_cause
->comp_name
) {
120 g_string_free(spec_cause
->comp_name
, TRUE
);
121 spec_cause
->comp_name
= NULL
;
124 if (spec_cause
->output_port_name
) {
125 g_string_free(spec_cause
->output_port_name
, TRUE
);
126 spec_cause
->output_port_name
= NULL
;
129 fini_component_class_id(&spec_cause
->comp_class_id
);
136 fini_error_cause(cause
);
144 int init_error_cause(struct bt_error_cause
*cause
,
145 enum bt_error_cause_actor_type actor_type
)
150 BT_LIB_LOGD("Initializing error cause: %!+r", cause
);
151 cause
->actor_type
= actor_type
;
152 cause
->module_name
= g_string_new(NULL
);
153 if (!cause
->module_name
) {
154 BT_LOGE_STR("Failed to allocate one GString.");
159 cause
->message
= g_string_new(NULL
);
160 if (!cause
->message
) {
161 BT_LOGE_STR("Failed to allocate one GString.");
166 cause
->file_name
= g_string_new(NULL
);
167 if (!cause
->file_name
) {
168 BT_LOGE_STR("Failed to allocate one GString.");
173 BT_LIB_LOGD("Initialized error cause: %!+r", cause
);
180 int init_component_class_id(
181 struct bt_error_cause_component_class_id
*comp_class_id
,
182 struct bt_component_class
*comp_cls
)
186 BT_ASSERT(comp_class_id
);
187 comp_class_id
->type
= comp_cls
->type
;
188 comp_class_id
->name
= g_string_new(comp_cls
->name
->str
);
189 if (!comp_class_id
->name
) {
190 BT_LOGE_STR("Failed to allocate one GString.");
195 comp_class_id
->plugin_name
= g_string_new(comp_cls
->plugin_name
->str
);
196 if (!comp_class_id
->plugin_name
) {
197 BT_LOGE_STR("Failed to allocate one GString.");
207 void set_error_cause_props(struct bt_error_cause
*cause
,
208 const char *file_name
, uint64_t line_no
)
211 g_string_assign(cause
->file_name
, file_name
);
212 cause
->line_no
= line_no
;
216 struct bt_error_cause
*create_error_cause(const char *module_name
,
217 const char *file_name
, uint64_t line_no
)
219 struct bt_error_cause
*cause
= g_new0(struct bt_error_cause
, 1);
222 BT_LOGD_STR("Creating error cause (unknown actor).");
225 BT_LOGE_STR("Failed to allocate one error cause.");
229 ret
= init_error_cause(cause
, BT_ERROR_CAUSE_ACTOR_TYPE_UNKNOWN
);
234 g_string_assign(cause
->module_name
, module_name
);
235 set_error_cause_props(cause
, file_name
, line_no
);
236 BT_LIB_LOGD("Created error cause: %!+r", cause
);
240 destroy_error_cause(cause
);
248 void append_component_class_id_str(GString
*str
,
249 struct bt_error_cause_component_class_id
*comp_class_id
)
251 const char *type_str
= NULL
;
253 switch (comp_class_id
->type
) {
254 case BT_COMPONENT_CLASS_TYPE_SOURCE
:
257 case BT_COMPONENT_CLASS_TYPE_FILTER
:
260 case BT_COMPONENT_CLASS_TYPE_SINK
:
267 if (comp_class_id
->plugin_name
->len
> 0) {
268 g_string_append_printf(str
, "%s.%s.%s",
269 type_str
, comp_class_id
->plugin_name
->str
,
270 comp_class_id
->name
->str
);
272 g_string_append_printf(str
, "%s.%s",
273 type_str
, comp_class_id
->name
->str
);
278 struct bt_error_cause_component_actor
*create_error_cause_component_actor(
279 struct bt_component
*comp
, const char *file_name
,
282 struct bt_error_cause_component_actor
*cause
=
283 g_new0(struct bt_error_cause_component_actor
, 1);
286 BT_LOGD_STR("Creating error cause object (component actor).");
292 ret
= init_error_cause(&cause
->base
,
293 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT
);
298 set_error_cause_props(&cause
->base
, file_name
, line_no
);
299 cause
->comp_name
= g_string_new(comp
->name
->str
);
300 if (!cause
->comp_name
) {
301 BT_LOGE_STR("Failed to allocate one GString.");
305 ret
= init_component_class_id(&cause
->comp_class_id
, comp
->class);
310 g_string_append_printf(cause
->base
.module_name
, "%s: ",
312 append_component_class_id_str(cause
->base
.module_name
,
313 &cause
->comp_class_id
);
314 BT_LIB_LOGD("Created error cause object: %!+r", cause
);
318 destroy_error_cause(&cause
->base
);
326 struct bt_error_cause_component_class_actor
*
327 create_error_cause_component_class_actor(struct bt_component_class
*comp_cls
,
328 const char *file_name
, uint64_t line_no
)
330 struct bt_error_cause_component_class_actor
*cause
=
331 g_new0(struct bt_error_cause_component_class_actor
, 1);
334 BT_LOGD_STR("Creating error cause object (component class actor).");
337 BT_LOGE_STR("Failed to allocate one error cause object.");
341 ret
= init_error_cause(&cause
->base
,
342 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT_CLASS
);
347 set_error_cause_props(&cause
->base
, file_name
, line_no
);
348 ret
= init_component_class_id(&cause
->comp_class_id
, comp_cls
);
353 append_component_class_id_str(cause
->base
.module_name
,
354 &cause
->comp_class_id
);
355 BT_LIB_LOGD("Created error cause object: %!+r", cause
);
359 destroy_error_cause(&cause
->base
);
367 struct bt_error_cause_message_iterator_actor
*
368 create_error_cause_message_iterator_actor(struct bt_message_iterator
*iter
,
369 const char *file_name
, uint64_t line_no
)
371 struct bt_error_cause_message_iterator_actor
*cause
;
372 struct bt_self_component_port_input_message_iterator
*input_port_iter
;
375 BT_LOGD_STR("Creating error cause object (message iterator actor).");
378 * This can only be created from within a graph, from a user
379 * message iterator, which is a self component port input
382 input_port_iter
= (void *) iter
;
383 cause
= g_new0(struct bt_error_cause_message_iterator_actor
, 1);
385 BT_LOGE_STR("Failed to allocate one error cause object.");
389 ret
= init_error_cause(&cause
->base
,
390 BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR
);
395 set_error_cause_props(&cause
->base
, file_name
, line_no
);
396 cause
->comp_name
= g_string_new(
397 input_port_iter
->upstream_component
->name
->str
);
398 if (!cause
->comp_name
) {
399 BT_LOGE_STR("Failed to allocate one GString.");
403 cause
->output_port_name
= g_string_new(
404 input_port_iter
->upstream_port
->name
->str
);
405 if (!cause
->output_port_name
) {
406 BT_LOGE_STR("Failed to allocate one GString.");
410 ret
= init_component_class_id(&cause
->comp_class_id
,
411 input_port_iter
->upstream_component
->class);
416 g_string_append_printf(cause
->base
.module_name
, "%s (%s): ",
417 input_port_iter
->upstream_component
->name
->str
,
418 input_port_iter
->upstream_port
->name
->str
);
419 append_component_class_id_str(cause
->base
.module_name
,
420 &cause
->comp_class_id
);
421 BT_LIB_LOGD("Created error cause object: %!+r", cause
);
425 destroy_error_cause(&cause
->base
);
433 struct bt_error
*bt_error_create(void)
435 struct bt_error
*error
;
437 BT_LOGD_STR("Creating error object.");
438 error
= g_new0(struct bt_error
, 1);
440 BT_LOGE_STR("Failed to allocate one error object.");
444 error
->causes
= g_ptr_array_new_with_free_func(
445 (GDestroyNotify
) destroy_error_cause
);
446 if (!error
->causes
) {
447 BT_LOGE_STR("Failed to allocate one GPtrArray.");
451 BT_LOGD("Created error object: addr=%p", error
);
455 bt_error_destroy(error
);
463 void bt_error_destroy(struct bt_error
*error
)
470 g_ptr_array_free(error
->causes
, TRUE
);
471 error
->causes
= NULL
;
481 int bt_error_append_cause_from_unknown(struct bt_error
*error
,
482 const char *module_name
, const char *file_name
,
483 uint64_t line_no
, const char *msg_fmt
, va_list args
)
485 struct bt_error_cause
*cause
= NULL
;
486 int status
= BT_FUNC_STATUS_OK
;
489 BT_ASSERT(module_name
);
490 BT_ASSERT(file_name
);
492 BT_LOGD("Appending error cause from unknown actor: "
493 "module-name=\"%s\", func-name=\"%s\", line-no=%" PRIu64
,
494 module_name
, file_name
, line_no
);
495 cause
= create_error_cause(module_name
, file_name
, line_no
);
497 /* create_error_cause() logs errors */
498 status
= BT_FUNC_STATUS_MEMORY_ERROR
;
502 g_string_append_vprintf(cause
->message
, msg_fmt
, args
);
503 g_ptr_array_add(error
->causes
, cause
);
504 BT_LIB_LOGD("Appended error cause: %!+r", cause
);
508 destroy_error_cause(cause
);
513 int bt_error_append_cause_from_component(
514 struct bt_error
*error
, bt_self_component
*self_comp
,
515 const char *file_name
, uint64_t line_no
,
516 const char *msg_fmt
, va_list args
)
518 struct bt_error_cause_component_actor
*cause
= NULL
;
519 int status
= BT_FUNC_STATUS_OK
;
522 BT_ASSERT(self_comp
);
523 BT_ASSERT(file_name
);
525 BT_LIB_LOGD("Appending error cause from component actor: %![comp-]+c",
527 cause
= create_error_cause_component_actor((void *) self_comp
,
530 /* create_error_cause_component_actor() logs errors */
531 status
= BT_FUNC_STATUS_MEMORY_ERROR
;
535 g_string_append_vprintf(cause
->base
.message
, msg_fmt
, args
);
536 g_ptr_array_add(error
->causes
, cause
);
537 BT_LIB_LOGD("Appended error cause: %!+r", cause
);
541 destroy_error_cause(&cause
->base
);
546 int bt_error_append_cause_from_component_class(
547 struct bt_error
*error
,
548 bt_self_component_class
*self_comp_class
,
549 const char *file_name
, uint64_t line_no
,
550 const char *msg_fmt
, va_list args
)
552 struct bt_error_cause_component_class_actor
*cause
= NULL
;
553 int status
= BT_FUNC_STATUS_OK
;
556 BT_ASSERT(self_comp_class
);
557 BT_ASSERT(file_name
);
559 BT_LIB_LOGD("Appending error cause from component class actor: "
560 "%![comp-cls-]+C", self_comp_class
);
561 cause
= create_error_cause_component_class_actor(
562 (void *) self_comp_class
, file_name
, line_no
);
564 /* create_error_cause_component_class_actor() logs errors */
565 status
= BT_FUNC_STATUS_MEMORY_ERROR
;
569 g_string_append_vprintf(cause
->base
.message
, msg_fmt
, args
);
570 g_ptr_array_add(error
->causes
, cause
);
571 BT_LIB_LOGD("Appended error cause: %!+r", cause
);
575 destroy_error_cause(&cause
->base
);
580 int bt_error_append_cause_from_message_iterator(
581 struct bt_error
*error
, bt_self_message_iterator
*self_iter
,
582 const char *file_name
, uint64_t line_no
,
583 const char *msg_fmt
, va_list args
)
585 struct bt_error_cause_message_iterator_actor
*cause
= NULL
;
586 int status
= BT_FUNC_STATUS_OK
;
589 BT_ASSERT(self_iter
);
590 BT_ASSERT(file_name
);
592 BT_LIB_LOGD("Appending error cause from message iterator actor: "
593 "%![comp-]+i", self_iter
);
594 cause
= create_error_cause_message_iterator_actor(
595 (void *) self_iter
, file_name
, line_no
);
597 /* create_error_cause_message_iterator_actor() logs errors */
598 status
= BT_FUNC_STATUS_MEMORY_ERROR
;
602 g_string_append_vprintf(cause
->base
.message
, msg_fmt
, args
);
603 g_ptr_array_add(error
->causes
, cause
);
604 BT_LIB_LOGD("Appended error cause: %!+r", cause
);
608 destroy_error_cause(&cause
->base
);
613 uint64_t error_cause_count(const bt_error
*error
)
615 return error
->causes
? error
->causes
->len
: 0;
618 uint64_t bt_error_get_cause_count(const bt_error
*error
)
620 BT_ASSERT_PRE_NON_NULL(error
, "Error");
621 return error_cause_count(error
);
624 void bt_error_release(const struct bt_error
*error
)
626 BT_ASSERT_PRE_NON_NULL(error
, "Error");
627 bt_error_destroy((void *) error
);
630 const struct bt_error_cause
*bt_error_borrow_cause_by_index(
631 const bt_error
*error
, uint64_t index
)
633 BT_ASSERT_PRE_NON_NULL(error
, "Error");
634 BT_ASSERT_PRE_VALID_INDEX(index
, error_cause_count(error
));
635 return error
->causes
->pdata
[index
];
638 enum bt_error_cause_actor_type
bt_error_cause_get_actor_type(
639 const struct bt_error_cause
*cause
)
641 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
642 return cause
->actor_type
;
645 const char *bt_error_cause_get_message(const struct bt_error_cause
*cause
)
647 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
648 return cause
->message
->str
;
651 const char *bt_error_cause_get_module_name(const struct bt_error_cause
*cause
)
653 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
654 return cause
->module_name
->str
;
657 const char *bt_error_cause_get_file_name(const struct bt_error_cause
*cause
)
659 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
660 return cause
->file_name
->str
;
663 uint64_t bt_error_cause_get_line_number(const bt_error_cause
*cause
)
665 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
666 return cause
->line_no
;
669 const char *bt_error_cause_component_actor_get_component_name(
670 const struct bt_error_cause
*cause
)
672 const struct bt_error_cause_component_actor
*spec_cause
=
673 (const void *) cause
;
675 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
676 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
677 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT
);
678 return spec_cause
->comp_name
->str
;
681 bt_component_class_type
bt_error_cause_component_actor_get_component_class_type(
682 const struct bt_error_cause
*cause
)
684 const struct bt_error_cause_component_actor
*spec_cause
=
685 (const void *) cause
;
687 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
688 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
689 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT
);
690 return spec_cause
->comp_class_id
.type
;
693 const char *bt_error_cause_component_actor_get_component_class_name(
694 const struct bt_error_cause
*cause
)
696 const struct bt_error_cause_component_actor
*spec_cause
=
697 (const void *) cause
;
699 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
700 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
701 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT
);
702 return spec_cause
->comp_class_id
.name
->str
;
705 const char *bt_error_cause_component_actor_get_plugin_name(
706 const struct bt_error_cause
*cause
)
708 const struct bt_error_cause_component_actor
*spec_cause
=
709 (const void *) cause
;
711 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
712 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
713 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT
);
714 return spec_cause
->comp_class_id
.plugin_name
->len
> 0 ?
715 spec_cause
->comp_class_id
.plugin_name
->str
: NULL
;
718 bt_component_class_type
719 bt_error_cause_component_class_actor_get_component_class_type(
720 const struct bt_error_cause
*cause
)
722 const struct bt_error_cause_component_class_actor
*spec_cause
=
723 (const void *) cause
;
725 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
726 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
727 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT_CLASS
);
728 return spec_cause
->comp_class_id
.type
;
731 const char *bt_error_cause_component_class_actor_get_component_class_name(
732 const struct bt_error_cause
*cause
)
734 const struct bt_error_cause_component_class_actor
*spec_cause
=
735 (const void *) cause
;
737 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
738 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
739 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT_CLASS
);
740 return spec_cause
->comp_class_id
.name
->str
;
743 const char *bt_error_cause_component_class_actor_get_plugin_name(
744 const struct bt_error_cause
*cause
)
746 const struct bt_error_cause_component_class_actor
*spec_cause
=
747 (const void *) cause
;
749 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
750 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
751 BT_ERROR_CAUSE_ACTOR_TYPE_COMPONENT_CLASS
);
752 return spec_cause
->comp_class_id
.plugin_name
->len
> 0 ?
753 spec_cause
->comp_class_id
.plugin_name
->str
: NULL
;
756 const char *bt_error_cause_message_iterator_actor_get_component_name(
757 const struct bt_error_cause
*cause
)
759 const struct bt_error_cause_message_iterator_actor
*spec_cause
=
760 (const void *) cause
;
762 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
763 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
764 BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR
);
765 return spec_cause
->comp_name
->str
;
769 bt_error_cause_message_iterator_actor_get_component_output_port_name(
770 const struct bt_error_cause
*cause
)
772 const struct bt_error_cause_message_iterator_actor
*spec_cause
=
773 (const void *) cause
;
775 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
776 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
777 BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR
);
778 return spec_cause
->output_port_name
->str
;
781 bt_component_class_type
782 bt_error_cause_message_iterator_actor_get_component_class_type(
783 const struct bt_error_cause
*cause
)
785 const struct bt_error_cause_message_iterator_actor
*spec_cause
=
786 (const void *) cause
;
788 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
789 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
790 BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR
);
791 return spec_cause
->comp_class_id
.type
;
794 const char *bt_error_cause_message_iterator_actor_get_component_class_name(
795 const struct bt_error_cause
*cause
)
797 const struct bt_error_cause_message_iterator_actor
*spec_cause
=
798 (const void *) cause
;
800 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
801 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
802 BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR
);
803 return spec_cause
->comp_class_id
.name
->str
;
806 const char *bt_error_cause_message_iterator_actor_get_plugin_name(
807 const struct bt_error_cause
*cause
)
809 const struct bt_error_cause_message_iterator_actor
*spec_cause
=
810 (const void *) cause
;
812 BT_ASSERT_PRE_NON_NULL(cause
, "Error cause");
813 BT_ASSERT_PRE_CAUSE_HAS_ACTOR_TYPE(cause
,
814 BT_ERROR_CAUSE_ACTOR_TYPE_MESSAGE_ITERATOR
);
815 return spec_cause
->comp_class_id
.plugin_name
->len
> 0 ?
816 spec_cause
->comp_class_id
.plugin_name
->str
: NULL
;