babeltracegraphinclude_HEADERS = \
babeltrace/graph/clock-class-priority-map.h \
babeltrace/graph/component-class-filter.h \
- babeltrace/graph/component-class-sink-colander.h \
babeltrace/graph/component-class-sink.h \
babeltrace/graph/component-class-source.h \
babeltrace/graph/component-class.h \
babeltrace/graph/notification.h \
babeltrace/graph/notification-packet.h \
babeltrace/graph/notification-stream.h \
+ babeltrace/graph/output-port-notification-iterator.h \
babeltrace/graph/port.h \
babeltrace/graph/private-component-filter.h \
babeltrace/graph/private-component-sink.h \
babeltrace/endian-internal.h \
babeltrace/graph/clock-class-priority-map-internal.h \
babeltrace/graph/component-class-internal.h \
+ babeltrace/graph/component-class-sink-colander-internal.h \
babeltrace/graph/component-filter-internal.h \
babeltrace/graph/component-internal.h \
babeltrace/graph/component-sink-internal.h \
/* Graph, component, and notification API */
#include <babeltrace/graph/clock-class-priority-map.h>
#include <babeltrace/graph/component-class-filter.h>
-#include <babeltrace/graph/component-class-sink-colander.h>
#include <babeltrace/graph/component-class-sink.h>
#include <babeltrace/graph/component-class-source.h>
#include <babeltrace/graph/component-class.h>
#include <babeltrace/graph/notification-packet.h>
#include <babeltrace/graph/notification-stream.h>
#include <babeltrace/graph/notification.h>
+#include <babeltrace/graph/output-port-notification-iterator.h>
#include <babeltrace/graph/port.h>
#include <babeltrace/graph/private-component-filter.h>
#include <babeltrace/graph/private-component-sink.h>
--- /dev/null
+#ifndef BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_COLANDER_H
+#define BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_COLANDER_H
+
+/*
+ * Copyright 2017 Philippe Proulx <pproulx@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/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct bt_component_class;
+struct bt_notification;
+
+struct bt_component_class_sink_colander_data {
+ struct bt_notification **notification;
+ const enum bt_notification_type *notification_types;
+};
+
+extern struct bt_component_class *bt_component_class_sink_colander_get(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_COLANDER_H */
+++ /dev/null
-#ifndef BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_COLANDER_H
-#define BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_COLANDER_H
-
-/*
- * Copyright 2017 Philippe Proulx <pproulx@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/types.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct bt_component_class;
-
-extern struct bt_component_class *bt_component_class_sink_colander_get(void);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BABELTRACE_GRAPH_COMPONENT_CLASS_SINK_COLANDER_H */
#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/object-internal.h>
#include <stdlib.h>
+#include <assert.h>
#include <glib.h>
struct bt_component;
bt_bool canceled;
bt_bool in_remove_listener;
bt_bool has_sink;
+
+ /*
+ * If this is BT_FALSE, then the public API's consuming
+ * functions (bt_graph_consume() and bt_graph_run()) return
+ * BT_GRAPH_STATUS_CANNOT_CONSUME. The internal "no check"
+ * functions always work.
+ *
+ * In bt_output_port_notification_iterator_create(), on success,
+ * this flag is cleared so that the iterator remains the only
+ * consumer for the graph's lifetime.
+ */
bt_bool can_consume;
struct {
} listeners;
};
+static inline
+void bt_graph_set_can_consume(struct bt_graph *graph, bt_bool can_consume)
+{
+ assert(graph);
+ graph->can_consume = can_consume;
+}
+
+BT_HIDDEN
+enum bt_graph_status bt_graph_consume_no_check(struct bt_graph *graph);
+
+BT_HIDDEN
+enum bt_graph_status bt_graph_consume_sink_no_check(struct bt_graph *graph,
+ struct bt_component *sink);
+
BT_HIDDEN
void bt_graph_notify_port_added(struct bt_graph *graph, struct bt_port *port);
void bt_graph_remove_connection(struct bt_graph *graph,
struct bt_connection *connection);
+/*
+ * This only works with a component which is not connected at this
+ * point.
+ *
+ * Also the reference count of `component` should be 0 when you call
+ * this function, which means only `graph` owns the component, so it
+ * is safe to destroy.
+ */
+BT_HIDDEN
+int bt_graph_remove_unconnected_component(struct bt_graph *graph,
+ struct bt_component *component);
+
static inline
const char *bt_graph_status_string(enum bt_graph_status status)
{
#include <babeltrace/graph/private-connection-private-notification-iterator.h>
#include <babeltrace/types.h>
#include <stdbool.h>
+#include <assert.h>
struct bt_port;
+struct bt_graph;
enum bt_notification_iterator_type {
BT_NOTIFICATION_ITERATOR_TYPE_PRIVATE_CONNECTION,
+ BT_NOTIFICATION_ITERATOR_TYPE_OUTPUT_PORT,
};
enum bt_private_connection_notification_iterator_notif_type {
struct bt_notification_iterator {
struct bt_object base;
enum bt_notification_iterator_type type;
+ struct bt_notification *current_notification; /* owned by this */
};
struct bt_notification_iterator_private_connection {
struct bt_component *upstream_component; /* Weak */
struct bt_port *upstream_port; /* Weak */
struct bt_connection *connection; /* Weak */
- struct bt_notification *current_notification; /* owned by this */
GQueue *queue; /* struct bt_notification * (owned by this) */
/*
void *user_data;
};
+struct bt_notification_iterator_output_port {
+ struct bt_notification_iterator base;
+ struct bt_graph *graph; /* Owned by this */
+ struct bt_component *colander; /* Owned by this */
+ struct bt_port *output_port; /* Owned by this */
+};
+
+static inline
+struct bt_notification *bt_notification_iterator_borrow_current_notification(
+ struct bt_notification_iterator *iterator)
+{
+ assert(iterator);
+ return iterator->current_notification;
+}
+
+static inline
+void bt_notification_iterator_replace_current_notification(
+ struct bt_notification_iterator *iterator,
+ struct bt_notification *notification)
+{
+ assert(iterator);
+ bt_put(iterator->current_notification);
+ iterator->current_notification = bt_get(notification);
+}
+
static inline
struct bt_notification_iterator_private_connection *
bt_private_connection_notification_iterator_from_private(
--- /dev/null
+#ifndef BABELTRACE_GRAPH_OUTPUT_PORT_NOTIFICATION_ITERATOR_H
+#define BABELTRACE_GRAPH_OUTPUT_PORT_NOTIFICATION_ITERATOR_H
+
+/*
+ * Copyright 2017 Philippe Proulx <pproulx@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.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct bt_port;
+struct bt_notification_iterator;
+
+extern struct bt_notification_iterator *bt_output_port_notification_iterator_create(
+ struct bt_port *port, const char *colander_component_name,
+ const enum bt_notification_type *notification_types);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BABELTRACE_GRAPH_OUTPUT_PORT_NOTIFICATION_ITERATOR_H */
#include <babeltrace/graph/private-component-sink.h>
#include <babeltrace/graph/private-port.h>
#include <babeltrace/graph/private-connection.h>
+#include <babeltrace/graph/component-class-sink-colander-internal.h>
#include <glib.h>
#include <assert.h>
struct colander_data {
struct bt_notification **user_notif;
+ enum bt_notification_type *notif_types;
struct bt_notification_iterator *notif_iter;
};
{
enum bt_component_status status = BT_COMPONENT_STATUS_OK;
struct colander_data *colander_data = NULL;
+ struct bt_component_class_sink_colander_data *user_provided_data =
+ init_method_data;
+ const enum bt_notification_type *notif_type;
if (!init_method_data) {
BT_LOGW_STR("Component initialization method data is NULL.");
goto end;
}
- colander_data->user_notif = init_method_data;
+ colander_data->user_notif = user_provided_data->notification;
+
+ if (user_provided_data->notification_types) {
+ notif_type = user_provided_data->notification_types;
+ unsigned long count;
+
+ while (*notif_type != BT_NOTIFICATION_TYPE_SENTINEL) {
+ notif_type++;
+ }
+
+ count = notif_type - user_provided_data->notification_types + 1;
+
+ colander_data->notif_types =
+ g_new0(enum bt_notification_type, count);
+ if (!colander_data->notif_types) {
+ BT_LOGE_STR("Failed to allocate an array of notification types.");
+ status = BT_COMPONENT_STATUS_NOMEM;
+ goto end;
+ }
+
+ memcpy(colander_data->notif_types,
+ user_provided_data->notification_types,
+ count * sizeof(enum bt_notification_type));
+ }
+
status = bt_private_component_sink_add_input_private_port(
priv_comp, "in", NULL, NULL);
if (status != BT_COMPONENT_STATUS_OK) {
bt_put(colander_data->notif_iter);
}
+ g_free(colander_data->notif_types);
g_free(colander_data);
}
assert(colander_data);
BT_PUT(colander_data->notif_iter);
conn_status = bt_private_connection_create_notification_iterator(
- priv_conn, NULL, &colander_data->notif_iter);
+ priv_conn, colander_data->notif_types,
+ &colander_data->notif_iter);
if (conn_status) {
BT_LOGE("Cannot create notification iterator from connection: "
"comp-addr=%p, conn-addr=%p", priv_comp, priv_conn);
}
static
-enum bt_graph_status bt_graph_consume_no_check(struct bt_graph *graph)
+enum bt_graph_status consume_graph_sink(struct bt_component *sink)
{
- struct bt_component *sink;
enum bt_graph_status status = BT_GRAPH_STATUS_OK;
enum bt_component_status comp_status;
- GList *current_node;
-
- BT_LOGV("Making next sink consume: addr=%p", graph);
- if (!graph->has_sink) {
- BT_LOGW_STR("Graph has no sink component.");
- status = BT_GRAPH_STATUS_NO_SINK;
- goto end;
- }
-
- if (g_queue_is_empty(graph->sinks_to_consume)) {
- BT_LOGV_STR("Graph's sink queue is empty: end of graph.");
- status = BT_GRAPH_STATUS_END;
- goto end;
- }
-
- current_node = g_queue_pop_head_link(graph->sinks_to_consume);
- sink = current_node->data;
- BT_LOGV("Chose next sink to consume: comp-addr=%p, comp-name=\"%s\"",
- sink, bt_component_get_name(sink));
+ assert(sink);
comp_status = bt_component_sink_consume(sink);
- BT_LOGV("Consumed from sink: status=%s",
+ BT_LOGV("Consumed from sink: addr=%p, name=\"%s\", status=%s",
+ sink, bt_component_get_name(sink),
bt_component_status_string(comp_status));
+
switch (comp_status) {
case BT_COMPONENT_STATUS_OK:
break;
break;
}
+ return status;
+}
+
+/*
+ * `node` is removed from the queue of sinks to consume when passed to
+ * this function. This function adds it back to the queue if there's
+ * still something to consume afterwards.
+ */
+static
+enum bt_graph_status consume_sink_node(struct bt_graph *graph,
+ GList *node)
+{
+ enum bt_graph_status status;
+ struct bt_component *sink;
+
+ sink = node->data;
+ status = consume_graph_sink(sink);
if (status != BT_GRAPH_STATUS_END) {
- g_queue_push_tail_link(graph->sinks_to_consume, current_node);
+ g_queue_push_tail_link(graph->sinks_to_consume, node);
goto end;
}
/* End reached, the node is not added back to the queue and free'd. */
- g_queue_delete_link(graph->sinks_to_consume, current_node);
+ g_queue_delete_link(graph->sinks_to_consume, node);
/* Don't forward an END status if there are sinks left to consume. */
if (!g_queue_is_empty(graph->sinks_to_consume)) {
status = BT_GRAPH_STATUS_OK;
goto end;
}
+
+end:
+ BT_LOGV("Consumed sink node: status=%s", bt_graph_status_string(status));
+ return status;
+}
+
+BT_HIDDEN
+enum bt_graph_status bt_graph_consume_sink_no_check(struct bt_graph *graph,
+ struct bt_component *sink)
+{
+ enum bt_graph_status status;
+ GList *sink_node;
+ int index;
+
+ BT_LOGV("Making specific sink consume: addr=%p, "
+ "comp-addr=%p, comp-name=\"%s\"",
+ graph, sink, bt_component_get_name(sink));
+
+ assert(bt_component_borrow_graph(sink) == graph);
+
+ if (g_queue_is_empty(graph->sinks_to_consume)) {
+ BT_LOGV_STR("Graph's sink queue is empty: end of graph.");
+ status = BT_GRAPH_STATUS_END;
+ goto end;
+ }
+
+ index = g_queue_index(graph->sinks_to_consume, sink);
+ if (index < 0) {
+ BT_LOGV_STR("Sink is not marked as consumable: sink is ended.");
+ status = BT_GRAPH_STATUS_END;
+ goto end;
+ }
+
+ sink_node = g_queue_pop_nth_link(graph->sinks_to_consume, index);
+ assert(sink_node);
+ status = consume_sink_node(graph, sink_node);
+
+end:
+ return status;
+}
+
+BT_HIDDEN
+enum bt_graph_status bt_graph_consume_no_check(struct bt_graph *graph)
+{
+ enum bt_graph_status status = BT_GRAPH_STATUS_OK;
+ struct bt_component *sink;
+ GList *current_node;
+
+ BT_LOGV("Making next sink consume: addr=%p", graph);
+
+ if (!graph->has_sink) {
+ BT_LOGW_STR("Graph has no sink component.");
+ status = BT_GRAPH_STATUS_NO_SINK;
+ goto end;
+ }
+
+ if (g_queue_is_empty(graph->sinks_to_consume)) {
+ BT_LOGV_STR("Graph's sink queue is empty: end of graph.");
+ status = BT_GRAPH_STATUS_END;
+ goto end;
+ }
+
+ current_node = g_queue_pop_head_link(graph->sinks_to_consume);
+ sink = current_node->data;
+ BT_LOGV("Chose next sink to consume: comp-addr=%p, comp-name=\"%s\"",
+ sink, bt_component_get_name(sink));
+ status = consume_sink_node(graph, current_node);
+
end:
- BT_LOGV("Graph consumed: status=%s", bt_graph_status_string(status));
return status;
}
return bt_graph_add_component_with_init_method_data(graph,
component_class, name, params, NULL, component);
}
+
+BT_HIDDEN
+int bt_graph_remove_unconnected_component(struct bt_graph *graph,
+ struct bt_component *component)
+{
+ const bt_bool init_can_consume = graph->can_consume;
+ int64_t count;
+ uint64_t i;
+ int ret = 0;
+
+ assert(graph);
+ assert(component);
+ assert(component->base.ref_count.count == 0);
+ assert(bt_component_borrow_graph(component) == graph);
+
+ count = bt_component_get_input_port_count(component);
+
+ for (i = 0; i < count; i++) {
+ struct bt_port *port =
+ bt_component_get_input_port_by_index(component, i);
+
+ assert(port);
+ bt_put(port);
+
+ if (bt_port_is_connected(port)) {
+ BT_LOGW("Cannot remove component from graph: "
+ "an input port is connected: "
+ "graph-addr=%p, comp-addr=%p, "
+ "comp-name=\"%s\", connected-port-addr=%p, "
+ "connected-port-name=\"%s\"",
+ graph, component,
+ bt_component_get_name(component),
+ port, bt_port_get_name(port));
+ goto error;
+ }
+ }
+
+ count = bt_component_get_output_port_count(component);
+
+ for (i = 0; i < count; i++) {
+ struct bt_port *port =
+ bt_component_get_output_port_by_index(component, i);
+
+ assert(port);
+ bt_put(port);
+
+ if (bt_port_is_connected(port)) {
+ BT_LOGW("Cannot remove component from graph: "
+ "an output port is connected: "
+ "graph-addr=%p, comp-addr=%p, "
+ "comp-name=\"%s\", connected-port-addr=%p, "
+ "connected-port-name=\"%s\"",
+ graph, component,
+ bt_component_get_name(component),
+ port, bt_port_get_name(port));
+ goto error;
+ }
+ }
+
+ graph->can_consume = BT_FALSE;
+
+ /* Possibly remove from sinks to consume */
+ (void) g_queue_remove(graph->sinks_to_consume, component);
+
+ if (graph->sinks_to_consume->length == 0) {
+ graph->has_sink = BT_FALSE;
+ }
+
+ /*
+ * This calls bt_object_release() on the component, and since
+ * its reference count is 0, its destructor is called. Its
+ * destructor calls the user's finalization method (if set).
+ */
+ g_ptr_array_remove(graph->components, component);
+ goto end;
+
+error:
+ ret = -1;
+
+end:
+ graph->can_consume = init_can_consume;
+ return ret;
+}
#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>
#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>
return stream_state;
}
+static
+void destroy_base_notification_iterator(struct bt_object *obj)
+{
+ 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)
{
*/
obj->ref_count.count++;
iterator = (void *) container_of(obj, struct bt_notification_iterator, base);
- BT_LOGD("Destroying notification iterator object: addr=%p",
+ BT_LOGD("Destroying private connection notification iterator object: addr=%p",
iterator);
bt_private_connection_notification_iterator_finalize(iterator);
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
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",
type == BT_COMPONENT_CLASS_TYPE_FILTER);
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;
}
goto end;
}
- switch (iterator->type) {
- case BT_NOTIFICATION_ITERATOR_TYPE_PRIVATE_CONNECTION:
- {
- struct bt_notification_iterator_private_connection *priv_conn_iter =
- (void *) iterator;
-
- notification = bt_get(priv_conn_iter->current_notification);
- break;
- }
- default:
- BT_LOGF("Unknown notification iterator type: addr=%p, type=%d",
- iterator, iterator->type);
- abort();
- }
+ notification = bt_get(
+ bt_notification_iterator_borrow_current_notification(iterator));
end:
return notification;
{
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
* iterator's current notification.
*/
assert(priv_conn_iter->queue->length > 0);
- bt_put(priv_conn_iter->current_notification);
- priv_conn_iter->current_notification =
- g_queue_pop_tail(priv_conn_iter->queue);
- assert(priv_conn_iter->current_notification);
+ 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;
+
+ /*
+ * 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_private_connection_notification_iterator_get_component(
(void *) bt_private_connection_notification_iterator_from_private(private_iterator)));
}
+
+static
+void bt_output_port_notification_iterator_destroy(struct bt_object *obj)
+{
+ 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;
+}
projects / babeltrace.git / commitdiff
