};
struct trimmer_iterator_stream_state {
- /*
- * True if both stream beginning and initial stream activity
- * beginning messages were pushed for this stream.
- */
- bool inited;
-
/*
* True if the last pushed message for this stream was a stream
* activity end message.
/* Owned by this (`NULL` initially and between packets) */
const bt_packet *cur_packet;
-
- /* Owned by this */
- const bt_message *stream_beginning_msg;
};
static
{
BT_ASSERT(sstate);
BT_PACKET_PUT_REF_AND_RESET(sstate->cur_packet);
- BT_MESSAGE_PUT_REF_AND_RESET(sstate->stream_beginning_msg);
g_free(sstate);
}
return status;
}
-/*
- * Makes sure to initialize a stream state, pushing the appropriate
- * initial messages.
- *
- * `stream_act_beginning_msg` is an initial stream activity beginning
- * message to potentially use, depending on its clock snapshot state.
- * This function consumes `stream_act_beginning_msg` unconditionally.
- */
-static inline
-bt_self_message_iterator_status ensure_stream_state_is_inited(
- struct trimmer_iterator *trimmer_it,
- struct trimmer_iterator_stream_state *sstate,
- const bt_message *stream_act_beginning_msg)
-{
- bt_self_message_iterator_status status =
- BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
- bt_message *new_msg = NULL;
- const bt_clock_class *clock_class =
- bt_stream_class_borrow_default_clock_class_const(
- bt_stream_borrow_class_const(sstate->stream));
-
- BT_ASSERT(!sstate->inited);
-
- if (!sstate->stream_beginning_msg) {
- /* No initial stream beginning message: create one */
- sstate->stream_beginning_msg =
- bt_message_stream_beginning_create(
- trimmer_it->self_msg_iter, sstate->stream);
- if (!sstate->stream_beginning_msg) {
- status = BT_SELF_MESSAGE_ITERATOR_STATUS_NOMEM;
- goto end;
- }
- }
-
- /* Push initial stream beginning message */
- BT_ASSERT(sstate->stream_beginning_msg);
- push_message(trimmer_it, sstate->stream_beginning_msg);
- sstate->stream_beginning_msg = NULL;
-
- if (stream_act_beginning_msg) {
- /*
- * Initial stream activity beginning message exists: if
- * its time is -inf, then create and push a new one
- * having the trimming range's beginning time. Otherwise
- * push it as is (known and unknown).
- */
- const bt_clock_snapshot *cs;
- bt_message_stream_activity_clock_snapshot_state sa_cs_state;
-
- sa_cs_state = bt_message_stream_activity_beginning_borrow_default_clock_snapshot_const(
- stream_act_beginning_msg, &cs);
- if (sa_cs_state == BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_INFINITE &&
- !trimmer_it->begin.is_infinite) {
- /*
- * -inf time: use trimming range's beginning
- * time (which is not -inf).
- */
- status = create_stream_beginning_activity_message(
- trimmer_it, sstate->stream, clock_class,
- &new_msg);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
-
- push_message(trimmer_it, new_msg);
- new_msg = NULL;
- } else {
- /* Known/unknown: push as is */
- push_message(trimmer_it, stream_act_beginning_msg);
- stream_act_beginning_msg = NULL;
- }
- } else {
- BT_ASSERT(!trimmer_it->begin.is_infinite);
-
- /*
- * No stream beginning activity message: create and push
- * a new message.
- */
- status = create_stream_beginning_activity_message(
- trimmer_it, sstate->stream, clock_class, &new_msg);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
-
- push_message(trimmer_it, new_msg);
- new_msg = NULL;
- }
-
- sstate->inited = true;
-
-end:
- bt_message_put_ref(new_msg);
- bt_message_put_ref(stream_act_beginning_msg);
- return status;
-}
-
-static inline
-bt_self_message_iterator_status ensure_cur_packet_exists(
- struct trimmer_iterator *trimmer_it,
- struct trimmer_iterator_stream_state *sstate,
- const bt_packet *packet)
-{
- bt_self_message_iterator_status status =
- BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
- int ret;
- const bt_clock_class *clock_class =
- bt_stream_class_borrow_default_clock_class_const(
- bt_stream_borrow_class_const(sstate->stream));
- bt_message *msg = NULL;
- uint64_t raw_value;
-
- BT_ASSERT(!trimmer_it->begin.is_infinite);
- BT_ASSERT(!sstate->cur_packet);
-
- /*
- * Create and push an initial packet beginning message,
- * making its time the trimming range's beginning time.
- */
- ret = clock_raw_value_from_ns_from_origin(clock_class,
- trimmer_it->begin.ns_from_origin, &raw_value);
- if (ret) {
- status = BT_SELF_MESSAGE_ITERATOR_STATUS_ERROR;
- goto end;
- }
-
- msg = bt_message_packet_beginning_create_with_default_clock_snapshot(
- trimmer_it->self_msg_iter, packet, raw_value);
- if (!msg) {
- status = BT_SELF_MESSAGE_ITERATOR_STATUS_NOMEM;
- goto end;
- }
-
- push_message(trimmer_it, msg);
- msg = NULL;
-
- /* Set packet as this stream's current packet */
- sstate->cur_packet = packet;
- bt_packet_get_ref(sstate->cur_packet);
-
-end:
- bt_message_put_ref(msg);
- return status;
-}
-
/*
* Handles a message which is associated to a given stream state. This
* _could_ make the iterator's output message queue grow; this could
break;
}
- if (G_UNLIKELY(!sstate->inited)) {
- status = ensure_stream_state_is_inited(trimmer_it,
- sstate, NULL);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
- }
-
- if (G_UNLIKELY(!sstate->cur_packet)) {
- const bt_event *event =
- bt_message_event_borrow_event_const(msg);
- const bt_packet *packet = bt_event_borrow_packet_const(
- event);
-
- status = ensure_cur_packet_exists(trimmer_it, sstate,
- packet);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
- }
-
BT_ASSERT(sstate->cur_packet);
push_message(trimmer_it, msg);
msg = NULL;
break;
}
- if (G_UNLIKELY(!sstate->inited)) {
- status = ensure_stream_state_is_inited(trimmer_it,
- sstate, NULL);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
- }
-
BT_ASSERT(!sstate->cur_packet);
sstate->cur_packet =
bt_message_packet_beginning_borrow_packet_const(msg);
break;
}
- if (G_UNLIKELY(!sstate->inited)) {
- status = ensure_stream_state_is_inited(trimmer_it,
- sstate, NULL);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
- }
-
- if (G_UNLIKELY(!sstate->cur_packet)) {
- const bt_packet *packet =
- bt_message_packet_end_borrow_packet_const(msg);
-
- status = ensure_cur_packet_exists(trimmer_it, sstate,
- packet);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
- }
-
BT_ASSERT(sstate->cur_packet);
BT_PACKET_PUT_REF_AND_RESET(sstate->cur_packet);
push_message(trimmer_it, msg);
BT_MESSAGE_MOVE_REF(msg, new_msg);
}
- if (G_UNLIKELY(!sstate->inited)) {
- status = ensure_stream_state_is_inited(trimmer_it,
- sstate, NULL);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
- }
-
push_message(trimmer_it, msg);
msg = NULL;
break;
break;
}
- if (!sstate->inited) {
- status = ensure_stream_state_is_inited(trimmer_it,
- sstate, msg);
- msg = NULL;
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
- } else {
- push_message(trimmer_it, msg);
- msg = NULL;
- }
-
+ push_message(trimmer_it, msg);
+ msg = NULL;
break;
case BT_MESSAGE_TYPE_STREAM_ACTIVITY_END:
if (trimmer_it->end.is_infinite) {
}
if (ns_from_origin == INT64_MIN) {
- /* Unknown: push as is if stream state is inited */
- if (sstate->inited) {
- push_message(trimmer_it, msg);
- msg = NULL;
- sstate->last_msg_is_stream_activity_end = true;
- }
+ /* Unknown: consider it to be in the trimmer window. */
+ push_message(trimmer_it, msg);
+ msg = NULL;
+ sstate->last_msg_is_stream_activity_end = true;
} else if (ns_from_origin == INT64_MAX) {
/* Infinite: use trimming range's end time */
sstate->stream_act_end_ns_from_origin =
break;
}
- if (!sstate->inited) {
- /*
- * First message for this stream is a
- * stream activity end: we can't deduce
- * anything about the stream activity
- * beginning's time, and using this
- * message's time would make a useless
- * pair of stream activity beginning/end
- * with the same time. Just skip this
- * message and wait for something
- * useful.
- */
- break;
- }
-
push_message(trimmer_it, msg);
msg = NULL;
sstate->last_msg_is_stream_activity_end = true;
break;
case BT_MESSAGE_TYPE_STREAM_BEGINNING:
- /*
- * We don't know what follows at this point, so just
- * keep this message until we know what to do with it
- * (it will be used in ensure_stream_state_is_inited()).
- */
- BT_ASSERT(!sstate->inited);
- BT_MESSAGE_MOVE_REF(sstate->stream_beginning_msg, msg);
+ push_message(trimmer_it, msg);
+ msg = NULL;
break;
case BT_MESSAGE_TYPE_STREAM_END:
- if (sstate->inited) {
- /*
- * This is the end of an inited stream: end this
- * stream if its stream activity end message
- * time is not the trimming range's end time
- * (which means the final stream activity end
- * message had an infinite time). end_stream()
- * will generate its own stream end message.
- */
- if (trimmer_it->end.is_infinite) {
- push_message(trimmer_it, msg);
- msg = NULL;
- g_hash_table_remove(trimmer_it->stream_states,
- sstate->stream);
- } else if (sstate->stream_act_end_ns_from_origin <
- trimmer_it->end.ns_from_origin) {
- status = end_stream(trimmer_it, sstate);
- if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
- goto end;
- }
+ /*
+ * This is the end of a stream: end this
+ * stream if its stream activity end message
+ * time is not the trimming range's end time
+ * (which means the final stream activity end
+ * message had an infinite time). end_stream()
+ * will generate its own stream end message.
+ */
+ if (trimmer_it->end.is_infinite) {
+ push_message(trimmer_it, msg);
+ msg = NULL;
- /* We won't need this stream state again */
- g_hash_table_remove(trimmer_it->stream_states,
- sstate->stream);
+ /* We won't need this stream state again */
+ g_hash_table_remove(trimmer_it->stream_states, sstate->stream);
+ } else if (sstate->stream_act_end_ns_from_origin <
+ trimmer_it->end.ns_from_origin) {
+ status = end_stream(trimmer_it, sstate);
+ if (status != BT_SELF_MESSAGE_ITERATOR_STATUS_OK) {
+ goto end;
}
- } else {
- /* We dont't need this stream state anymore */
+
+ /* We won't need this stream state again */
g_hash_table_remove(trimmer_it->stream_states, sstate->stream);
}
-
break;
default:
break;
projects / babeltrace.git / blobdiff