-#ifndef BABELTRACE_COMPONENT_NOTIFICATION_ITERATOR_INTERNAL_H
-#define BABELTRACE_COMPONENT_NOTIFICATION_ITERATOR_INTERNAL_H
+#ifndef BABELTRACE_GRAPH_NOTIFICATION_ITERATOR_INTERNAL_H
+#define BABELTRACE_GRAPH_NOTIFICATION_ITERATOR_INTERNAL_H
/*
- * BabelTrace - Notification Iterator Internal
- *
+ * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
* Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
- * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
#include <babeltrace/babeltrace-internal.h>
#include <babeltrace/object-internal.h>
-#include <babeltrace/ref-internal.h>
-#include <babeltrace/graph/notification.h>
+#include <babeltrace/graph/connection-const.h>
+#include <babeltrace/graph/notification-const.h>
#include <babeltrace/graph/notification-iterator.h>
-#include <babeltrace/graph/private-notification-iterator.h>
+#include <babeltrace/types.h>
+#include <babeltrace/assert-internal.h>
+#include <stdbool.h>
+
+struct bt_port;
+struct bt_graph;
+
+enum bt_notification_iterator_type {
+ BT_NOTIFICATION_ITERATOR_TYPE_SELF_COMPONENT_PORT_INPUT,
+ BT_NOTIFICATION_ITERATOR_TYPE_PORT_OUTPUT,
+};
+
+enum bt_self_component_port_input_notification_iterator_state {
+ /* Iterator is not initialized. */
+ BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_NON_INITIALIZED,
+
+ /* Iterator is active, not at the end yet, and not finalized. */
+ BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_ACTIVE,
+
+ /*
+ * Iterator is ended, not finalized yet: the "next" method
+ * returns BT_NOTIFICATION_ITERATOR_STATUS_END.
+ */
+ BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_ENDED,
+
+ /*
+ * Iterator is finalized, but not at the end yet. This means
+ * that the "next" method can still return queued notifications
+ * before returning the BT_NOTIFICATION_ITERATOR_STATUS_CANCELED
+ * status.
+ */
+ BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_FINALIZED,
+
+ /*
+ * Iterator is finalized and ended: the "next" method always
+ * returns BT_NOTIFICATION_ITERATOR_STATUS_CANCELED.
+ */
+ BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED,
+};
struct bt_notification_iterator {
struct bt_object base;
- struct bt_component *component;
- struct bt_notification *current_notification;
+ enum bt_notification_iterator_type type;
+ GPtrArray *notifs;
+};
+
+struct bt_self_component_port_input_notification_iterator {
+ struct bt_notification_iterator base;
+ struct bt_component *upstream_component; /* Weak */
+ struct bt_port *upstream_port; /* Weak */
+ struct bt_connection *connection; /* Weak */
+ struct bt_graph *graph; /* Weak */
+
+ /*
+ * This hash table keeps the state of a stream as viewed by
+ * this notification iterator. This is used to, in developer
+ * mode:
+ *
+ * * Automatically enqueue "stream begin", "packet begin",
+ * "packet end", and "stream end" notifications depending
+ * on the stream's state and on the next notification returned
+ * by the upstream component.
+ *
+ * * Make sure that, once the notification iterator has seen a
+ * "stream end" notification for a given stream, no other
+ * notifications which refer to this stream can be delivered
+ * by this iterator.
+ *
+ * The key (struct bt_stream *) is not owned by this. The
+ * value is an allocated state structure.
+ */
+ GHashTable *stream_states;
+
+ enum bt_self_component_port_input_notification_iterator_state state;
void *user_data;
};
-static inline
-struct bt_notification_iterator *bt_notification_iterator_from_private(
- struct bt_private_notification_iterator *private_notification_iterator)
-{
- return (void *) private_notification_iterator;
-}
+struct bt_port_output_notification_iterator {
+ struct bt_notification_iterator base;
+ struct bt_graph *graph; /* Owned by this */
+ struct bt_component_sink *colander; /* Owned by this */
-static inline
-struct bt_private_notification_iterator *
-bt_private_notification_iterator_from_notification_iterator(
- struct bt_notification_iterator *notification_iterator)
-{
- return (void *) notification_iterator;
-}
+ /*
+ * Only used temporarily as a bridge between a colander sink and
+ * the user.
+ */
+ uint64_t count;
+};
-/**
- * Allocate a notification iterator.
- *
- * @param component Component instance
- * @returns A notification iterator instance
- */
BT_HIDDEN
-struct bt_notification_iterator *bt_notification_iterator_create(
- struct bt_component *component);
+void bt_self_component_port_input_notification_iterator_finalize(
+ struct bt_self_component_port_input_notification_iterator *iterator);
-/**
- * Validate a notification iterator.
- *
- * @param iterator Notification iterator instance
- * @returns One of #bt_component_status values
- */
BT_HIDDEN
-enum bt_notification_iterator_status bt_notification_iterator_validate(
- struct bt_notification_iterator *iterator);
+void bt_self_component_port_input_notification_iterator_set_connection(
+ struct bt_self_component_port_input_notification_iterator *iterator,
+ struct bt_connection *connection);
+
+static inline
+const char *bt_notification_iterator_status_string(
+ enum bt_notification_iterator_status status)
+{
+ switch (status) {
+ case BT_NOTIFICATION_ITERATOR_STATUS_CANCELED:
+ return "BT_NOTIFICATION_ITERATOR_STATUS_CANCELED";
+ case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN:
+ return "BT_NOTIFICATION_ITERATOR_STATUS_AGAIN";
+ case BT_NOTIFICATION_ITERATOR_STATUS_END:
+ return "BT_NOTIFICATION_ITERATOR_STATUS_END";
+ case BT_NOTIFICATION_ITERATOR_STATUS_OK:
+ return "BT_NOTIFICATION_ITERATOR_STATUS_OK";
+ case BT_NOTIFICATION_ITERATOR_STATUS_ERROR:
+ return "BT_NOTIFICATION_ITERATOR_STATUS_ERROR";
+ case BT_NOTIFICATION_ITERATOR_STATUS_NOMEM:
+ return "BT_NOTIFICATION_ITERATOR_STATUS_NOMEM";
+ default:
+ return "(unknown)";
+ }
+};
+
+static inline
+const char *bt_self_component_port_input_notification_iterator_state_string(
+ enum bt_self_component_port_input_notification_iterator_state state)
+{
+ switch (state) {
+ case BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_ACTIVE:
+ return "BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_ACTIVE";
+ case BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_ENDED:
+ return "BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_ENDED";
+ case BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_FINALIZED:
+ return "BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_FINALIZED";
+ case BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED:
+ return "BT_SELF_COMPONENT_PORT_INPUT_NOTIFICATION_ITERATOR_STATE_FINALIZED_AND_ENDED";
+ default:
+ return "(unknown)";
+ }
+};
-#endif /* BABELTRACE_COMPONENT_NOTIFICATION_ITERATOR_INTERNAL_H */
+#endif /* BABELTRACE_GRAPH_NOTIFICATION_ITERATOR_INTERNAL_H */
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