Implement bt_private_connection_notification_iterator_from_private()
[babeltrace.git] / lib / graph / iterator.c
index cc1228ba7ded6106f189a66d75a264aa4616ca59..c202087417188c7a5e42ff7c227bf1420383bb99 100644 (file)
@@ -41,6 +41,8 @@
 #include <babeltrace/graph/component.h>
 #include <babeltrace/graph/component-source-internal.h>
 #include <babeltrace/graph/component-class-internal.h>
+#include <babeltrace/graph/component-class-sink-colander-internal.h>
+#include <babeltrace/graph/component-sink.h>
 #include <babeltrace/graph/notification.h>
 #include <babeltrace/graph/notification-iterator.h>
 #include <babeltrace/graph/notification-iterator-internal.h>
@@ -53,6 +55,7 @@
 #include <babeltrace/graph/notification-stream-internal.h>
 #include <babeltrace/graph/notification-discarded-elements-internal.h>
 #include <babeltrace/graph/port.h>
+#include <babeltrace/graph/graph-internal.h>
 #include <babeltrace/types.h>
 #include <stdint.h>
 #include <inttypes.h>
@@ -126,7 +129,7 @@ struct action {
 static
 void stream_destroy_listener(struct bt_ctf_stream *stream, void *data)
 {
-       struct bt_notification_iterator *iterator = data;
+       struct bt_notification_iterator_private_connection *iterator = data;
 
        /* Remove associated stream state */
        g_hash_table_remove(iterator->stream_states, stream);
@@ -185,14 +188,14 @@ void destroy_action(struct action *action)
 }
 
 static
-void add_action(struct bt_notification_iterator *iterator,
+void add_action(struct bt_notification_iterator_private_connection *iterator,
                struct action *action)
 {
        g_array_append_val(iterator->actions, *action);
 }
 
 static
-void clear_actions(struct bt_notification_iterator *iterator)
+void clear_actions(struct bt_notification_iterator_private_connection *iterator)
 {
        size_t i;
 
@@ -230,7 +233,7 @@ const char *action_type_string(enum action_type type)
 }
 
 static
-void apply_actions(struct bt_notification_iterator *iterator)
+void apply_actions(struct bt_notification_iterator_private_connection *iterator)
 {
        size_t i;
 
@@ -358,9 +361,20 @@ end:
 }
 
 static
-void bt_notification_iterator_destroy(struct bt_object *obj)
+void destroy_base_notification_iterator(struct bt_object *obj)
 {
-       struct bt_notification_iterator *iterator;
+       struct bt_notification_iterator *iterator =
+               container_of(obj, struct bt_notification_iterator, base);
+
+       BT_LOGD_STR("Putting current notification.");
+       bt_put(iterator->current_notification);
+       g_free(iterator);
+}
+
+static
+void bt_private_connection_notification_iterator_destroy(struct bt_object *obj)
+{
+       struct bt_notification_iterator_private_connection *iterator;
 
        assert(obj);
 
@@ -375,10 +389,10 @@ void bt_notification_iterator_destroy(struct bt_object *obj)
         * would be called again.
         */
        obj->ref_count.count++;
-       iterator = container_of(obj, struct bt_notification_iterator, base);
-       BT_LOGD("Destroying notification iterator object: addr=%p",
+       iterator = (void *) container_of(obj, struct bt_notification_iterator, base);
+       BT_LOGD("Destroying private connection notification iterator object: addr=%p",
                iterator);
-       bt_notification_iterator_finalize(iterator);
+       bt_private_connection_notification_iterator_finalize(iterator);
 
        if (iterator->queue) {
                struct bt_notification *notif;
@@ -429,14 +443,12 @@ void bt_notification_iterator_destroy(struct bt_object *obj)
                bt_connection_remove_iterator(iterator->connection, iterator);
        }
 
-       BT_LOGD_STR("Putting current notification.");
-       bt_put(iterator->current_notification);
-       g_free(iterator);
+       destroy_base_notification_iterator(obj);
 }
 
 BT_HIDDEN
-void bt_notification_iterator_finalize(
-               struct bt_notification_iterator *iterator)
+void bt_private_connection_notification_iterator_finalize(
+               struct bt_notification_iterator_private_connection *iterator)
 {
        struct bt_component_class *comp_class = NULL;
        bt_component_class_notification_iterator_finalize_method
@@ -445,8 +457,13 @@ void bt_notification_iterator_finalize(
        assert(iterator);
 
        switch (iterator->state) {
-       case BT_NOTIFICATION_ITERATOR_STATE_FINALIZED:
-       case BT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED:
+       case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_NON_INITIALIZED:
+               /* Skip user finalization if user initialization failed */
+               BT_LOGD("Not finalizing non-initialized notification iterator: "
+                       "addr=%p", iterator);
+               return;
+       case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED:
+       case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED:
                /* Already finalized */
                BT_LOGD("Not finalizing notification iterator: already finalized: "
                        "addr=%p", iterator);
@@ -457,14 +474,14 @@ void bt_notification_iterator_finalize(
 
        BT_LOGD("Finalizing notification iterator: addr=%p", iterator);
 
-       if (iterator->state == BT_NOTIFICATION_ITERATOR_STATE_ENDED) {
+       if (iterator->state == BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ENDED) {
                BT_LOGD("Updating notification iterator's state: "
-                       "new-state=BT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED");
-               iterator->state = BT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED;
+                       "new-state=BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED");
+               iterator->state = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED;
        } else {
                BT_LOGD("Updating notification iterator's state: "
-                       "new-state=BT_NOTIFICATION_ITERATOR_STATE_FINALIZED");
-               iterator->state = BT_NOTIFICATION_ITERATOR_STATE_FINALIZED;
+                       "new-state=BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED");
+               iterator->state = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED;
        }
 
        assert(iterator->upstream_component);
@@ -497,7 +514,7 @@ void bt_notification_iterator_finalize(
                BT_LOGD("Calling user's finalization method: addr=%p",
                        iterator);
                finalize_method(
-                       bt_private_notification_iterator_from_notification_iterator(iterator));
+                       bt_private_connection_private_notification_iterator_from_notification_iterator(iterator));
        }
 
        iterator->upstream_component = NULL;
@@ -506,8 +523,8 @@ void bt_notification_iterator_finalize(
 }
 
 BT_HIDDEN
-void bt_notification_iterator_set_connection(
-               struct bt_notification_iterator *iterator,
+void bt_private_connection_notification_iterator_set_connection(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_connection *connection)
 {
        assert(iterator);
@@ -518,7 +535,7 @@ void bt_notification_iterator_set_connection(
 
 static
 int create_subscription_mask_from_notification_types(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                const enum bt_notification_type *notif_types)
 {
        const enum bt_notification_type *notif_type;
@@ -533,38 +550,38 @@ int create_subscription_mask_from_notification_types(
                switch (*notif_type) {
                case BT_NOTIFICATION_TYPE_ALL:
                        iterator->subscription_mask |=
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_EVENT |
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_INACTIVITY |
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_BEGIN |
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_END |
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_BEGIN |
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_END |
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_EVENTS |
-                               BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_PACKETS;
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_EVENT |
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_INACTIVITY |
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_BEGIN |
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_END |
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_BEGIN |
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_END |
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_EVENTS |
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_PACKETS;
                        break;
                case BT_NOTIFICATION_TYPE_EVENT:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_EVENT;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_EVENT;
                        break;
                case BT_NOTIFICATION_TYPE_INACTIVITY:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_INACTIVITY;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_INACTIVITY;
                        break;
                case BT_NOTIFICATION_TYPE_STREAM_BEGIN:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_BEGIN;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_BEGIN;
                        break;
                case BT_NOTIFICATION_TYPE_STREAM_END:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_END;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_END;
                        break;
                case BT_NOTIFICATION_TYPE_PACKET_BEGIN:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_BEGIN;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_BEGIN;
                        break;
                case BT_NOTIFICATION_TYPE_PACKET_END:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_END;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_END;
                        break;
                case BT_NOTIFICATION_TYPE_DISCARDED_EVENTS:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_EVENTS;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_EVENTS;
                        break;
                case BT_NOTIFICATION_TYPE_DISCARDED_PACKETS:
-                       iterator->subscription_mask |= BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_PACKETS;
+                       iterator->subscription_mask |= BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_PACKETS;
                        break;
                default:
                        ret = -1;
@@ -581,24 +598,33 @@ end:
        return ret;
 }
 
+static
+void init_notification_iterator(struct bt_notification_iterator *iterator,
+               enum bt_notification_iterator_type type,
+               bt_object_release_func destroy)
+{
+       bt_object_init(iterator, destroy);
+       iterator->type = type;
+}
+
 BT_HIDDEN
-enum bt_connection_status bt_notification_iterator_create(
+enum bt_connection_status bt_private_connection_notification_iterator_create(
                struct bt_component *upstream_comp,
                struct bt_port *upstream_port,
                const enum bt_notification_type *notification_types,
                struct bt_connection *connection,
-               struct bt_notification_iterator **user_iterator)
+               struct bt_notification_iterator_private_connection **user_iterator)
 {
        enum bt_connection_status status = BT_CONNECTION_STATUS_OK;
        enum bt_component_class_type type;
-       struct bt_notification_iterator *iterator = NULL;
+       struct bt_notification_iterator_private_connection *iterator = NULL;
 
        assert(upstream_comp);
        assert(upstream_port);
        assert(notification_types);
        assert(bt_port_is_connected(upstream_port));
        assert(user_iterator);
-       BT_LOGD("Creating notification iterator: "
+       BT_LOGD("Creating notification iterator on private connection: "
                "upstream-comp-addr=%p, upstream-comp-name=\"%s\", "
                "upstream-port-addr=%p, upstream-port-name=\"%s\", "
                "conn-addr=%p",
@@ -608,14 +634,16 @@ enum bt_connection_status bt_notification_iterator_create(
        type = bt_component_get_class_type(upstream_comp);
        assert(type == BT_COMPONENT_CLASS_TYPE_SOURCE ||
                type == BT_COMPONENT_CLASS_TYPE_FILTER);
-       iterator = g_new0(struct bt_notification_iterator, 1);
+       iterator = g_new0(struct bt_notification_iterator_private_connection, 1);
        if (!iterator) {
-               BT_LOGE_STR("Failed to allocate one notification iterator.");
+               BT_LOGE_STR("Failed to allocate one private connection notification iterator.");
                status = BT_CONNECTION_STATUS_NOMEM;
                goto end;
        }
 
-       bt_object_init(iterator, bt_notification_iterator_destroy);
+       init_notification_iterator((void *) iterator,
+               BT_NOTIFICATION_ITERATOR_TYPE_PRIVATE_CONNECTION,
+               bt_private_connection_notification_iterator_destroy);
 
        if (create_subscription_mask_from_notification_types(iterator,
                        notification_types)) {
@@ -649,7 +677,7 @@ enum bt_connection_status bt_notification_iterator_create(
        iterator->upstream_component = upstream_comp;
        iterator->upstream_port = upstream_port;
        iterator->connection = connection;
-       iterator->state = BT_NOTIFICATION_ITERATOR_STATE_ACTIVE;
+       iterator->state = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_NON_INITIALIZED;
        BT_LOGD("Created notification iterator: "
                "upstream-comp-addr=%p, upstream-comp-name=\"%s\", "
                "upstream-port-addr=%p, upstream-port-name=\"%s\", "
@@ -667,24 +695,24 @@ end:
        return status;
 }
 
-void *bt_private_notification_iterator_get_user_data(
-               struct bt_private_notification_iterator *private_iterator)
+void *bt_private_connection_private_notification_iterator_get_user_data(
+               struct bt_private_connection_private_notification_iterator *private_iterator)
 {
-       struct bt_notification_iterator *iterator =
-               bt_notification_iterator_from_private(private_iterator);
+       struct bt_notification_iterator_private_connection *iterator =
+               bt_private_connection_notification_iterator_borrow_from_private(private_iterator);
 
        return iterator ? iterator->user_data : NULL;
 }
 
 enum bt_notification_iterator_status
-bt_private_notification_iterator_set_user_data(
-               struct bt_private_notification_iterator *private_iterator,
+bt_private_connection_private_notification_iterator_set_user_data(
+               struct bt_private_connection_private_notification_iterator *private_iterator,
                void *data)
 {
        enum bt_notification_iterator_status ret =
                        BT_NOTIFICATION_ITERATOR_STATUS_OK;
-       struct bt_notification_iterator *iterator =
-               bt_notification_iterator_from_private(private_iterator);
+       struct bt_notification_iterator_private_connection *iterator =
+               bt_private_connection_notification_iterator_borrow_from_private(private_iterator);
 
        if (!iterator) {
                BT_LOGW_STR("Invalid parameter: notification iterator is NULL.");
@@ -710,43 +738,44 @@ struct bt_notification *bt_notification_iterator_get_notification(
                goto end;
        }
 
-       notification = bt_get(iterator->current_notification);
+       notification = bt_get(
+               bt_notification_iterator_borrow_current_notification(iterator));
 
 end:
        return notification;
 }
 
 static
-enum bt_notification_iterator_notif_type
+enum bt_private_connection_notification_iterator_notif_type
 bt_notification_iterator_notif_type_from_notif_type(
                enum bt_notification_type notif_type)
 {
-       enum bt_notification_iterator_notif_type iter_notif_type;
+       enum bt_private_connection_notification_iterator_notif_type iter_notif_type;
 
        switch (notif_type) {
        case BT_NOTIFICATION_TYPE_EVENT:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_EVENT;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_EVENT;
                break;
        case BT_NOTIFICATION_TYPE_INACTIVITY:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_INACTIVITY;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_INACTIVITY;
                break;
        case BT_NOTIFICATION_TYPE_STREAM_BEGIN:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_BEGIN;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_BEGIN;
                break;
        case BT_NOTIFICATION_TYPE_STREAM_END:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_END;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_STREAM_END;
                break;
        case BT_NOTIFICATION_TYPE_PACKET_BEGIN:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_BEGIN;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_BEGIN;
                break;
        case BT_NOTIFICATION_TYPE_PACKET_END:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_END;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_PACKET_END;
                break;
        case BT_NOTIFICATION_TYPE_DISCARDED_EVENTS:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_EVENTS;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_EVENTS;
                break;
        case BT_NOTIFICATION_TYPE_DISCARDED_PACKETS:
-               iter_notif_type = BT_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_PACKETS;
+               iter_notif_type = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_NOTIF_TYPE_DISCARDED_PACKETS;
                break;
        default:
                abort();
@@ -756,7 +785,8 @@ bt_notification_iterator_notif_type_from_notif_type(
 }
 
 static
-bt_bool validate_notification(struct bt_notification_iterator *iterator,
+bt_bool validate_notification(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif,
                struct bt_ctf_stream *notif_stream,
                struct bt_ctf_packet *notif_packet)
@@ -875,7 +905,8 @@ end:
 }
 
 static
-bt_bool is_subscribed_to_notification_type(struct bt_notification_iterator *iterator,
+bt_bool is_subscribed_to_notification_type(
+               struct bt_notification_iterator_private_connection *iterator,
                enum bt_notification_type notif_type)
 {
        uint32_t iter_notif_type =
@@ -886,7 +917,8 @@ bt_bool is_subscribed_to_notification_type(struct bt_notification_iterator *iter
 }
 
 static
-void add_action_push_notif(struct bt_notification_iterator *iterator,
+void add_action_push_notif(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif)
 {
        struct action action = {
@@ -906,7 +938,7 @@ void add_action_push_notif(struct bt_notification_iterator *iterator,
 
 static
 int add_action_push_notif_stream_begin(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_ctf_stream *stream)
 {
        int ret = 0;
@@ -943,7 +975,7 @@ end:
 
 static
 int add_action_push_notif_stream_end(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_ctf_stream *stream)
 {
        int ret = 0;
@@ -980,7 +1012,7 @@ end:
 
 static
 int add_action_push_notif_packet_begin(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_ctf_packet *packet)
 {
        int ret = 0;
@@ -1016,7 +1048,7 @@ end:
 
 static
 int add_action_push_notif_packet_end(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_ctf_packet *packet)
 {
        int ret = 0;
@@ -1052,7 +1084,7 @@ end:
 
 static
 void add_action_set_stream_state_is_ended(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct stream_state *stream_state)
 {
        struct action action = {
@@ -1070,7 +1102,7 @@ void add_action_set_stream_state_is_ended(
 
 static
 void add_action_set_stream_state_cur_packet(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct stream_state *stream_state,
                struct bt_ctf_packet *packet)
 {
@@ -1091,7 +1123,7 @@ void add_action_set_stream_state_cur_packet(
 
 static
 void add_action_update_stream_state_discarded_elements(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                enum action_type type,
                struct stream_state *stream_state,
                struct bt_ctf_clock_value *cur_begin,
@@ -1122,7 +1154,8 @@ void add_action_update_stream_state_discarded_elements(
 }
 
 static
-int ensure_stream_state_exists(struct bt_notification_iterator *iterator,
+int ensure_stream_state_exists(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *stream_begin_notif,
                struct bt_ctf_stream *notif_stream,
                struct stream_state **_stream_state)
@@ -1299,7 +1332,8 @@ end:
 }
 
 static
-int handle_discarded_packets(struct bt_notification_iterator *iterator,
+int handle_discarded_packets(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_ctf_packet *packet,
                struct bt_ctf_clock_value *ts_begin,
                struct bt_ctf_clock_value *ts_end,
@@ -1373,7 +1407,8 @@ end:
 }
 
 static
-int handle_discarded_events(struct bt_notification_iterator *iterator,
+int handle_discarded_events(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_ctf_packet *packet,
                struct bt_ctf_clock_value *ts_begin,
                struct bt_ctf_clock_value *ts_end,
@@ -1533,7 +1568,8 @@ end:
 }
 
 static
-int handle_discarded_elements(struct bt_notification_iterator *iterator,
+int handle_discarded_elements(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_ctf_packet *packet, struct stream_state *stream_state)
 {
        struct bt_ctf_clock_value *ts_begin = NULL;
@@ -1573,7 +1609,8 @@ end:
 }
 
 static
-int handle_packet_switch(struct bt_notification_iterator *iterator,
+int handle_packet_switch(
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *packet_begin_notif,
                struct bt_ctf_packet *new_packet,
                struct stream_state *stream_state)
@@ -1633,7 +1670,7 @@ end:
 
 static
 int handle_notif_stream_begin(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif,
                struct bt_ctf_stream *notif_stream)
 {
@@ -1660,7 +1697,7 @@ end:
 
 static
 int handle_notif_stream_end(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif,
                struct bt_ctf_stream *notif_stream)
 {
@@ -1695,7 +1732,7 @@ end:
 
 static
 int handle_notif_discarded_elements(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif,
                struct bt_ctf_stream *notif_stream)
 {
@@ -1724,7 +1761,7 @@ end:
 
 static
 int handle_notif_packet_begin(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif,
                struct bt_ctf_stream *notif_stream,
                struct bt_ctf_packet *notif_packet)
@@ -1758,7 +1795,7 @@ end:
 
 static
 int handle_notif_packet_end(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif,
                struct bt_ctf_stream *notif_stream,
                struct bt_ctf_packet *notif_packet)
@@ -1795,7 +1832,7 @@ end:
 
 static
 int handle_notif_event(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif,
                struct bt_ctf_stream *notif_stream,
                struct bt_ctf_packet *notif_packet)
@@ -1830,7 +1867,7 @@ end:
 
 static
 int enqueue_notification_and_automatic(
-               struct bt_notification_iterator *iterator,
+               struct bt_notification_iterator_private_connection *iterator,
                struct bt_notification *notif)
 {
        int ret = 0;
@@ -1957,7 +1994,7 @@ end:
 }
 
 static
-int handle_end(struct bt_notification_iterator *iterator)
+int handle_end(struct bt_notification_iterator_private_connection *iterator)
 {
        GHashTableIter stream_state_iter;
        gpointer stream_gptr, stream_state_gptr;
@@ -2009,12 +2046,12 @@ end:
 
 static
 enum bt_notification_iterator_status ensure_queue_has_notifications(
-               struct bt_notification_iterator *iterator)
+               struct bt_notification_iterator_private_connection *iterator)
 {
-       struct bt_private_notification_iterator *priv_iterator =
-               bt_private_notification_iterator_from_notification_iterator(iterator);
+       struct bt_private_connection_private_notification_iterator *priv_iterator =
+               bt_private_connection_private_notification_iterator_from_notification_iterator(iterator);
        bt_component_class_notification_iterator_next_method next_method = NULL;
-       struct bt_notification_iterator_next_return next_return = {
+       struct bt_notification_iterator_next_method_return next_return = {
                .status = BT_NOTIFICATION_ITERATOR_STATUS_OK,
                .notification = NULL,
        };
@@ -2026,7 +2063,7 @@ enum bt_notification_iterator_status ensure_queue_has_notifications(
        BT_LOGD("Ensuring that notification iterator's queue has at least one notification: "
                "iter-addr=%p, queue-size=%u, iter-state=%s",
                iterator, iterator->queue->length,
-               bt_notification_iterator_state_string(iterator->state));
+               bt_private_connection_notification_iterator_state_string(iterator->state));
 
        if (iterator->queue->length > 0) {
                /*
@@ -2041,12 +2078,12 @@ enum bt_notification_iterator_status ensure_queue_has_notifications(
        }
 
        switch (iterator->state) {
-       case BT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED:
-       case BT_NOTIFICATION_ITERATOR_STATE_FINALIZED:
+       case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED:
+       case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED:
                BT_LOGD_STR("Notification iterator's \"next\" called, but it is finalized.");
                status = BT_NOTIFICATION_ITERATOR_STATUS_CANCELED;
                goto end;
-       case BT_NOTIFICATION_ITERATOR_STATE_ENDED:
+       case BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ENDED:
                BT_LOGD_STR("Notification iterator is ended.");
                status = BT_NOTIFICATION_ITERATOR_STATUS_END;
                goto end;
@@ -2100,8 +2137,8 @@ enum bt_notification_iterator_status ensure_queue_has_notifications(
                        goto end;
                }
 
-               if (iterator->state == BT_NOTIFICATION_ITERATOR_STATE_FINALIZED ||
-                               iterator->state == BT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED) {
+               if (iterator->state == BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED ||
+                               iterator->state == BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED) {
                        /*
                         * The user's "next" method, somehow, cancelled
                         * its own notification iterator. This can
@@ -2136,8 +2173,8 @@ enum bt_notification_iterator_status ensure_queue_has_notifications(
                        }
 
                        assert(iterator->state ==
-                               BT_NOTIFICATION_ITERATOR_STATE_ACTIVE);
-                       iterator->state = BT_NOTIFICATION_ITERATOR_STATE_ENDED;
+                               BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ACTIVE);
+                       iterator->state = BT_PRIVATE_CONNECTION_NOTIFICATION_ITERATOR_STATE_ENDED;
 
                        if (iterator->queue->length == 0) {
                                status = BT_NOTIFICATION_ITERATOR_STATUS_END;
@@ -2210,50 +2247,291 @@ bt_notification_iterator_next(struct bt_notification_iterator *iterator)
 
        BT_LOGD("Notification iterator's \"next\": iter-addr=%p", iterator);
 
-       /*
-        * Make sure that the iterator's queue contains at least one
-        * notification.
-        */
-       status = ensure_queue_has_notifications(iterator);
-       if (status != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
-               /* Not an error */
-               goto end;
+       switch (iterator->type) {
+       case BT_NOTIFICATION_ITERATOR_TYPE_PRIVATE_CONNECTION:
+       {
+               struct bt_notification_iterator_private_connection *priv_conn_iter =
+                       (void *) iterator;
+               struct bt_notification *notif;
+
+               /*
+                * Make sure that the iterator's queue contains at least
+                * one notification.
+                */
+               status = ensure_queue_has_notifications(priv_conn_iter);
+               if (status != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
+                       goto end;
+               }
+
+               /*
+                * Move the notification at the tail of the queue to the
+                * iterator's current notification.
+                */
+               assert(priv_conn_iter->queue->length > 0);
+               notif = g_queue_pop_tail(priv_conn_iter->queue);
+               bt_notification_iterator_replace_current_notification(
+                       iterator, notif);
+               bt_put(notif);
+               break;
        }
+       case BT_NOTIFICATION_ITERATOR_TYPE_OUTPUT_PORT:
+       {
+               struct bt_notification_iterator_output_port *out_port_iter =
+                       (void *) iterator;
 
-       /*
-        * Move the notification at the tail of the queue to the
-        * iterator's current notification.
-        */
-       assert(iterator->queue->length > 0);
-       bt_put(iterator->current_notification);
-       iterator->current_notification = g_queue_pop_tail(iterator->queue);
-       assert(iterator->current_notification);
+               /*
+                * Keep current notification in case there's an error:
+                * restore this notification so that the current
+                * notification is not changed from the user's point of
+                * view.
+                */
+               struct bt_notification *old_notif =
+                       bt_get(bt_notification_iterator_borrow_current_notification(iterator));
+               enum bt_graph_status graph_status;
+
+               /*
+                * Put current notification since it's possibly
+                * about to be replaced by a new one by the
+                * colander sink.
+                */
+               bt_notification_iterator_replace_current_notification(
+                       iterator, NULL);
+               graph_status = bt_graph_consume_sink_no_check(
+                       out_port_iter->graph,
+                       out_port_iter->colander);
+               switch (graph_status) {
+               case BT_GRAPH_STATUS_CANCELED:
+                       status = BT_NOTIFICATION_ITERATOR_STATUS_CANCELED;
+                       break;
+               case BT_GRAPH_STATUS_AGAIN:
+                       status = BT_NOTIFICATION_ITERATOR_STATUS_AGAIN;
+                       break;
+               case BT_GRAPH_STATUS_END:
+                       status = BT_NOTIFICATION_ITERATOR_STATUS_END;
+                       break;
+               case BT_GRAPH_STATUS_NOMEM:
+                       status = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM;
+                       break;
+               case BT_GRAPH_STATUS_OK:
+                       status = BT_NOTIFICATION_ITERATOR_STATUS_OK;
+                       assert(bt_notification_iterator_borrow_current_notification(iterator));
+                       break;
+               default:
+                       /* Other errors */
+                       status = BT_NOTIFICATION_ITERATOR_STATUS_ERROR;
+               }
+
+               if (status != BT_NOTIFICATION_ITERATOR_STATUS_OK) {
+                       /* Error/exception: restore old notification */
+                       bt_notification_iterator_replace_current_notification(
+                               iterator, old_notif);
+               }
+
+               bt_put(old_notif);
+               break;
+       }
+       default:
+               BT_LOGF("Unknown notification iterator type: addr=%p, type=%d",
+                       iterator, iterator->type);
+               abort();
+       }
 
 end:
        return status;
 }
 
-struct bt_component *bt_notification_iterator_get_component(
+struct bt_component *bt_private_connection_notification_iterator_get_component(
                struct bt_notification_iterator *iterator)
 {
-       return bt_get(iterator->upstream_component);
+       struct bt_component *comp = NULL;
+       struct bt_notification_iterator_private_connection *iter_priv_conn;
+
+       if (!iterator) {
+               BT_LOGW_STR("Invalid parameter: notification iterator is NULL.");
+               goto end;
+       }
+
+       if (iterator->type != BT_NOTIFICATION_ITERATOR_TYPE_PRIVATE_CONNECTION) {
+               BT_LOGW_STR("Invalid parameter: notification iterator was not created from a private connection.");
+               goto end;
+       }
+
+       iter_priv_conn = (void *) iterator;
+       comp = bt_get(iter_priv_conn->upstream_component);
+
+end:
+       return comp;
 }
 
 struct bt_private_component *
-bt_private_notification_iterator_get_private_component(
-               struct bt_private_notification_iterator *private_iterator)
+bt_private_connection_private_notification_iterator_get_private_component(
+               struct bt_private_connection_private_notification_iterator *private_iterator)
 {
        return bt_private_component_from_component(
-               bt_notification_iterator_get_component(
-                       bt_notification_iterator_from_private(private_iterator)));
+               bt_private_connection_notification_iterator_get_component(
+                       (void *) bt_private_connection_notification_iterator_borrow_from_private(private_iterator)));
 }
 
-enum bt_notification_iterator_status bt_notification_iterator_seek_time(
-               struct bt_notification_iterator *iterator,
-               enum bt_notification_iterator_seek_origin seek_origin,
-               int64_t time)
+static
+void bt_output_port_notification_iterator_destroy(struct bt_object *obj)
 {
-       enum bt_notification_iterator_status ret =
-                       BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED;
-       return ret;
+       struct bt_notification_iterator_output_port *iterator =
+               (void *) container_of(obj, struct bt_notification_iterator, base);
+
+       BT_LOGD("Destroying output port notification iterator object: addr=%p",
+               iterator);
+       BT_LOGD_STR("Putting graph.");
+       bt_put(iterator->graph);
+       BT_LOGD_STR("Putting output port.");
+       bt_put(iterator->output_port);
+       BT_LOGD_STR("Putting colander sink component.");
+       bt_put(iterator->colander);
+       destroy_base_notification_iterator(obj);
+}
+
+struct bt_notification_iterator *bt_output_port_notification_iterator_create(
+               struct bt_port *output_port,
+               const char *colander_component_name,
+               const enum bt_notification_type *notification_types)
+{
+       struct bt_notification_iterator *iterator_base = NULL;
+       struct bt_notification_iterator_output_port *iterator = NULL;
+       struct bt_component_class *colander_comp_cls = NULL;
+       struct bt_component *output_port_comp = NULL;
+       struct bt_component *colander_comp;
+       struct bt_graph *graph = NULL;
+       enum bt_graph_status graph_status;
+       const char *colander_comp_name;
+       struct bt_port *colander_in_port = NULL;
+       struct bt_component_class_sink_colander_data colander_data;
+
+       if (!output_port) {
+               BT_LOGW_STR("Invalid parameter: port is NULL.");
+               goto error;
+       }
+
+       if (bt_port_get_type(output_port) != BT_PORT_TYPE_OUTPUT) {
+               BT_LOGW_STR("Invalid parameter: port is not an output port.");
+               goto error;
+       }
+
+       output_port_comp = bt_port_get_component(output_port);
+       if (!output_port_comp) {
+               BT_LOGW("Cannot get output port's component: "
+                       "port-addr=%p, port-name=\"%s\"",
+                       output_port, bt_port_get_name(output_port));
+               goto error;
+       }
+
+       graph = bt_component_get_graph(output_port_comp);
+       assert(graph);
+
+       /* Create notification iterator */
+       BT_LOGD("Creating notification iterator on output port: "
+               "comp-addr=%p, comp-name\"%s\", port-addr=%p, port-name=\"%s\"",
+               output_port_comp, bt_component_get_name(output_port_comp),
+               output_port, bt_port_get_name(output_port));
+       iterator = g_new0(struct bt_notification_iterator_output_port, 1);
+       if (!iterator) {
+               BT_LOGE_STR("Failed to allocate one output port notification iterator.");
+               goto error;
+       }
+
+       init_notification_iterator((void *) iterator,
+               BT_NOTIFICATION_ITERATOR_TYPE_OUTPUT_PORT,
+               bt_output_port_notification_iterator_destroy);
+
+       /* Create colander component */
+       colander_comp_cls = bt_component_class_sink_colander_get();
+       if (!colander_comp_cls) {
+               BT_LOGW("Cannot get colander sink component class.");
+               goto error;
+       }
+
+       BT_MOVE(iterator->graph, graph);
+       iterator_base = (void *) iterator;
+       colander_comp_name =
+               colander_component_name ? colander_component_name : "colander";
+       colander_data.notification = &iterator_base->current_notification;
+       colander_data.notification_types = notification_types;
+       graph_status = bt_graph_add_component_with_init_method_data(
+               iterator->graph, colander_comp_cls, colander_comp_name,
+               NULL, &colander_data, &iterator->colander);
+       if (graph_status != BT_GRAPH_STATUS_OK) {
+               BT_LOGW("Cannot add colander sink component to graph: "
+                       "graph-addr=%p, name=\"%s\", graph-status=%s",
+                       iterator->graph, colander_comp_name,
+                       bt_graph_status_string(graph_status));
+               goto error;
+       }
+
+       /*
+        * Connect provided output port to the colander component's
+        * input port.
+        */
+       colander_in_port = bt_component_sink_get_input_port_by_index(
+               iterator->colander, 0);
+       assert(colander_in_port);
+       graph_status = bt_graph_connect_ports(iterator->graph,
+               output_port, colander_in_port, NULL);
+       if (graph_status != BT_GRAPH_STATUS_OK) {
+               BT_LOGW("Cannot add colander sink component to graph: "
+                       "graph-addr=%p, name=\"%s\", graph-status=%s",
+                       iterator->graph, colander_comp_name,
+                       bt_graph_status_string(graph_status));
+               goto error;
+       }
+
+       /*
+        * At this point everything went fine. Make the graph
+        * nonconsumable forever so that only this notification iterator
+        * can consume (thanks to bt_graph_consume_sink_no_check()).
+        * This avoids leaking the notification created by the colander
+        * sink and moved to the base notification iterator's current
+        * notification member.
+        */
+       bt_graph_set_can_consume(iterator->graph, BT_FALSE);
+       goto end;
+
+error:
+       if (iterator && iterator->graph && iterator->colander) {
+               int ret;
+
+               /* Remove created colander component from graph if any */
+               colander_comp = iterator->colander;
+               BT_PUT(iterator->colander);
+
+               /*
+                * At this point the colander component's reference
+                * count is 0 because iterator->colander was the only
+                * owner. We also know that it is not connected because
+                * this is the last operation before this function
+                * succeeds.
+                *
+                * Since we honor the preconditions here,
+                * bt_graph_remove_unconnected_component() always
+                * succeeds.
+                */
+               ret = bt_graph_remove_unconnected_component(iterator->graph,
+                       colander_comp);
+               assert(ret == 0);
+       }
+
+       BT_PUT(iterator);
+
+end:
+       bt_put(colander_in_port);
+       bt_put(colander_comp_cls);
+       bt_put(output_port_comp);
+       bt_put(graph);
+       return (void *) iterator;
+}
+
+struct bt_notification_iterator *
+bt_private_connection_notification_iterator_from_private(
+               struct bt_private_connection_private_notification_iterator *private_notification_iterator)
+{
+       return bt_get(
+               bt_private_connection_notification_iterator_borrow_from_private(
+                       private_notification_iterator));
 }
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