#include <babeltrace/lib-logging-internal.h>
#include <babeltrace/compiler-internal.h>
+#include <babeltrace/trace-ir/clock-class-internal.h>
+#include <babeltrace/trace-ir/clock-snapshot-internal.h>
#include <babeltrace/trace-ir/field.h>
#include <babeltrace/trace-ir/event-const.h>
#include <babeltrace/trace-ir/event-internal.h>
#include <babeltrace/graph/component-class-internal.h>
#include <babeltrace/graph/component-class-sink-colander-internal.h>
#include <babeltrace/graph/component-sink-const.h>
+#include <babeltrace/graph/component-sink-internal.h>
#include <babeltrace/graph/message-const.h>
-#include <babeltrace/graph/message-iterator.h>
+#include <babeltrace/graph/message-iterator-const.h>
#include <babeltrace/graph/message-iterator-internal.h>
#include <babeltrace/graph/self-component-port-input-message-iterator.h>
#include <babeltrace/graph/port-output-message-iterator.h>
#include <babeltrace/graph/message-internal.h>
#include <babeltrace/graph/message-event-const.h>
#include <babeltrace/graph/message-event-internal.h>
-#include <babeltrace/graph/message-packet-const.h>
+#include <babeltrace/graph/message-packet-beginning-const.h>
+#include <babeltrace/graph/message-packet-end-const.h>
#include <babeltrace/graph/message-packet-internal.h>
-#include <babeltrace/graph/message-stream-const.h>
+#include <babeltrace/graph/message-stream-beginning-const.h>
+#include <babeltrace/graph/message-stream-end-const.h>
#include <babeltrace/graph/message-stream-internal.h>
+#include <babeltrace/graph/message-message-iterator-inactivity-internal.h>
+#include <babeltrace/graph/message-discarded-items-internal.h>
+#include <babeltrace/graph/message-stream-activity-internal.h>
#include <babeltrace/graph/port-const.h>
#include <babeltrace/graph/graph.h>
#include <babeltrace/graph/graph-const.h>
*/
#define MSG_BATCH_SIZE 15
-struct stream_state {
- const struct bt_stream *stream; /* owned by this */
- const struct bt_packet *cur_packet; /* owned by this */
- uint64_t expected_msg_seq_num;
- bt_bool is_ended;
-};
+#define BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(_iter) \
+ BT_ASSERT_PRE((_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE || \
+ (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED || \
+ (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN || \
+ (_iter)->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR, \
+ "Message iterator is in the wrong state: %!+i", _iter)
-BT_ASSERT_PRE_FUNC
-static
-void destroy_stream_state(struct stream_state *stream_state)
+static inline
+void _set_self_comp_port_input_msg_iterator_state(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ enum bt_self_component_port_input_message_iterator_state state)
{
- if (!stream_state) {
- return;
- }
-
- BT_LOGV("Destroying stream state: stream-state-addr=%p", stream_state);
- BT_LOGV_STR("Putting stream state's current packet.");
- BT_OBJECT_PUT_REF_AND_RESET(stream_state->cur_packet);
- BT_LOGV_STR("Putting stream state's stream.");
- BT_OBJECT_PUT_REF_AND_RESET(stream_state->stream);
- g_free(stream_state);
+ BT_ASSERT(iterator);
+ BT_LIB_LOGD("Updating message iterator's state: new-state=%s",
+ bt_self_component_port_input_message_iterator_state_string(state));
+ iterator->state = state;
}
-BT_ASSERT_PRE_FUNC
-static
-struct stream_state *create_stream_state(const struct bt_stream *stream)
-{
- struct stream_state *stream_state = g_new0(struct stream_state, 1);
-
- if (!stream_state) {
- BT_LOGE_STR("Failed to allocate one stream state.");
- goto end;
- }
-
- /*
- * We keep a reference to the stream until we know it's ended.
- */
- stream_state->stream = stream;
- bt_object_get_no_null_check(stream_state->stream);
- BT_LIB_LOGV("Created stream state: %![stream-]+s, "
- "stream-state-addr=%p",
- stream, stream_state);
-
-end:
- return stream_state;
-}
+#ifdef BT_DEV_MODE
+# define set_self_comp_port_input_msg_iterator_state _set_self_comp_port_input_msg_iterator_state
+#else
+# define set_self_comp_port_input_msg_iterator_state(_a, _b) ((void) _a); ((void) _b);
+#endif
static
void destroy_base_message_iterator(struct bt_object *obj)
iterator = (void *) obj;
BT_LIB_LOGD("Destroying self component input port message iterator object: "
"%!+i", iterator);
- bt_self_component_port_input_message_iterator_finalize(iterator);
-
- if (iterator->stream_states) {
- /*
- * Remove our destroy listener from each stream which
- * has a state in this iterator. Otherwise the destroy
- * listener would be called with an invalid/other
- * message iterator object.
- */
- g_hash_table_destroy(iterator->stream_states);
- iterator->stream_states = NULL;
- }
+ bt_self_component_port_input_message_iterator_try_finalize(iterator);
if (iterator->connection) {
/*
iterator->connection = NULL;
}
+ if (iterator->auto_seek_msgs) {
+ while (!g_queue_is_empty(iterator->auto_seek_msgs)) {
+ bt_object_put_no_null_check(
+ g_queue_pop_tail(iterator->auto_seek_msgs));
+ }
+
+ g_queue_free(iterator->auto_seek_msgs);
+ iterator->auto_seek_msgs = NULL;
+ }
+
destroy_base_message_iterator(obj);
}
BT_HIDDEN
-void bt_self_component_port_input_message_iterator_finalize(
+void bt_self_component_port_input_message_iterator_try_finalize(
struct bt_self_component_port_input_message_iterator *iterator)
{
typedef void (*method_t)(void *);
/* Skip user finalization if user initialization failed */
BT_LIB_LOGD("Not finalizing non-initialized message iterator: "
"%!+i", iterator);
- return;
+ goto end;
case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED:
- case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED_AND_ENDED:
/* Already finalized */
BT_LIB_LOGD("Not finalizing message iterator: already finalized: "
"%!+i", iterator);
- return;
+ goto end;
+ case BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING:
+ /* Already finalized */
+ BT_LIB_LOGF("Message iterator is already being finalized: "
+ "%!+i", iterator);
+ abort();
default:
break;
}
BT_LIB_LOGD("Finalizing message iterator: %!+i", iterator);
-
- if (iterator->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED) {
- BT_LIB_LOGD("Updating message iterator's state: "
- "new-state=BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED_AND_ENDED");
- iterator->state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED_AND_ENDED;
- } else {
- BT_LIB_LOGD("Updating message iterator's state: "
- "new-state=BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED");
- iterator->state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED;
- }
-
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZING);
BT_ASSERT(iterator->upstream_component);
comp_class = iterator->upstream_component->class;
iterator->upstream_component = NULL;
iterator->upstream_port = NULL;
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED);
BT_LIB_LOGD("Finalized message iterator: %!+i", iterator);
+
+end:
+ return;
}
BT_HIDDEN
return ret;
}
+static
+bt_bool can_seek_ns_from_origin_true(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ int64_t ns_from_origin)
+{
+ return BT_TRUE;
+}
+
+static
+bt_bool can_seek_beginning_true(
+ struct bt_self_component_port_input_message_iterator *iterator)
+{
+ return BT_TRUE;
+}
+
static
struct bt_self_component_port_input_message_iterator *
bt_self_component_port_input_message_iterator_create_initial(
goto end;
}
- iterator->stream_states = g_hash_table_new_full(g_direct_hash,
- g_direct_equal, NULL, (GDestroyNotify) destroy_stream_state);
- if (!iterator->stream_states) {
- BT_LOGE_STR("Failed to allocate a GHashTable.");
- BT_OBJECT_PUT_REF_AND_RESET(iterator);
+ iterator->auto_seek_msgs = g_queue_new();
+ if (!iterator->auto_seek_msgs) {
+ BT_LOGE_STR("Failed to allocate a GQueue.");
+ ret = -1;
goto end;
}
iterator->upstream_port = upstream_port;
iterator->connection = iterator->upstream_port->connection;
iterator->graph = bt_component_borrow_graph(upstream_comp);
- iterator->state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED;
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_NON_INITIALIZED);
+
+ switch (iterator->upstream_component->class->type) {
+ case BT_COMPONENT_CLASS_TYPE_SOURCE:
+ {
+ struct bt_component_class_source *src_comp_cls =
+ (void *) iterator->upstream_component->class;
+
+ iterator->methods.next =
+ (bt_self_component_port_input_message_iterator_next_method)
+ src_comp_cls->methods.msg_iter_next;
+ iterator->methods.seek_ns_from_origin =
+ (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method)
+ src_comp_cls->methods.msg_iter_seek_ns_from_origin;
+ iterator->methods.seek_beginning =
+ (bt_self_component_port_input_message_iterator_seek_beginning_method)
+ src_comp_cls->methods.msg_iter_seek_beginning;
+ iterator->methods.can_seek_ns_from_origin =
+ (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
+ src_comp_cls->methods.msg_iter_can_seek_ns_from_origin;
+ iterator->methods.can_seek_beginning =
+ (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
+ src_comp_cls->methods.msg_iter_can_seek_beginning;
+ break;
+ }
+ case BT_COMPONENT_CLASS_TYPE_FILTER:
+ {
+ struct bt_component_class_filter *flt_comp_cls =
+ (void *) iterator->upstream_component->class;
+
+ iterator->methods.next =
+ (bt_self_component_port_input_message_iterator_next_method)
+ flt_comp_cls->methods.msg_iter_next;
+ iterator->methods.seek_ns_from_origin =
+ (bt_self_component_port_input_message_iterator_seek_ns_from_origin_method)
+ flt_comp_cls->methods.msg_iter_seek_ns_from_origin;
+ iterator->methods.seek_beginning =
+ (bt_self_component_port_input_message_iterator_seek_beginning_method)
+ flt_comp_cls->methods.msg_iter_seek_beginning;
+ iterator->methods.can_seek_ns_from_origin =
+ (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
+ flt_comp_cls->methods.msg_iter_can_seek_ns_from_origin;
+ iterator->methods.can_seek_beginning =
+ (bt_self_component_port_input_message_iterator_can_seek_beginning_method)
+ flt_comp_cls->methods.msg_iter_can_seek_beginning;
+ break;
+ }
+ default:
+ abort();
+ }
+
+ if (iterator->methods.seek_ns_from_origin &&
+ !iterator->methods.can_seek_ns_from_origin) {
+ iterator->methods.can_seek_ns_from_origin =
+ (bt_self_component_port_input_message_iterator_can_seek_ns_from_origin_method)
+ can_seek_ns_from_origin_true;
+ }
+
+ if (iterator->methods.seek_beginning &&
+ !iterator->methods.can_seek_beginning) {
+ iterator->methods.can_seek_beginning =
+ (bt_self_component_port_input_message_iterator_seek_beginning_method)
+ can_seek_beginning_true;
+ }
+
BT_LIB_LOGD("Created initial message iterator on self component input port: "
"%![up-port-]+p, %![up-comp-]+c, %![iter-]+i",
upstream_port, upstream_comp, iterator);
BT_ASSERT(upstream_port);
upstream_comp = bt_port_borrow_component_inline(upstream_port);
BT_ASSERT(upstream_comp);
+ BT_ASSERT_PRE(
+ bt_component_borrow_graph(upstream_comp)->config_state !=
+ BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
+ "Graph is not configured: %!+g",
+ bt_component_borrow_graph(upstream_comp));
upstream_comp_cls = upstream_comp->class;
BT_ASSERT(upstream_comp->class->type ==
BT_COMPONENT_CLASS_TYPE_SOURCE ||
bt_message_iterator_status_string(iter_status));
if (iter_status != BT_MESSAGE_ITERATOR_STATUS_OK) {
BT_LOGW_STR("Initialization method failed.");
+ BT_OBJECT_PUT_REF_AND_RESET(iterator);
goto end;
}
}
- iterator->state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE;
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
g_ptr_array_add(port->connection->iterators, iterator);
BT_LIB_LOGD("Created message iterator on self component input port: "
"%![up-port-]+p, %![up-comp-]+c, %![iter-]+i",
"%!+i, user-data-addr=%p", iterator, data);
}
-BT_ASSERT_PRE_FUNC
-static inline
-void bt_message_borrow_packet_stream(const struct bt_message *msg,
- const struct bt_stream **stream,
- const struct bt_packet **packet)
-{
- BT_ASSERT(msg);
-
- switch (msg->type) {
- case BT_MESSAGE_TYPE_EVENT:
- *packet = bt_event_borrow_packet_const(
- bt_message_event_borrow_event_const(msg));
- *stream = bt_packet_borrow_stream_const(*packet);
- break;
- case BT_MESSAGE_TYPE_STREAM_BEGINNING:
- *stream = bt_message_stream_beginning_borrow_stream_const(msg);
- break;
- case BT_MESSAGE_TYPE_STREAM_END:
- *stream = bt_message_stream_end_borrow_stream_const(msg);
- break;
- case BT_MESSAGE_TYPE_PACKET_BEGINNING:
- *packet = bt_message_packet_beginning_borrow_packet_const(msg);
- *stream = bt_packet_borrow_stream_const(*packet);
- break;
- case BT_MESSAGE_TYPE_PACKET_END:
- *packet = bt_message_packet_end_borrow_packet_const(msg);
- *stream = bt_packet_borrow_stream_const(*packet);
- break;
- default:
- break;
- }
-}
-
-BT_ASSERT_PRE_FUNC
-static inline
-bool validate_message(
- struct bt_self_component_port_input_message_iterator *iterator,
- const struct bt_message *c_msg)
-{
- bool is_valid = true;
- struct stream_state *stream_state;
- const struct bt_stream *stream = NULL;
- const struct bt_packet *packet = NULL;
- struct bt_message *msg = (void *) c_msg;
-
- BT_ASSERT(msg);
- bt_message_borrow_packet_stream(c_msg, &stream, &packet);
-
- if (!stream) {
- /* we don't care about messages not attached to streams */
- goto end;
- }
-
- stream_state = g_hash_table_lookup(iterator->stream_states, stream);
- if (!stream_state) {
- /*
- * No stream state for this stream: this message
- * MUST be a BT_MESSAGE_TYPE_STREAM_BEGINNING message
- * and its sequence number must be 0.
- */
- if (c_msg->type != BT_MESSAGE_TYPE_STREAM_BEGINNING) {
- BT_ASSERT_PRE_MSG("Unexpected message: missing a "
- "BT_MESSAGE_TYPE_STREAM_BEGINNING "
- "message prior to this message: "
- "%![stream-]+s", stream);
- is_valid = false;
- goto end;
- }
-
- if (c_msg->seq_num == -1ULL) {
- msg->seq_num = 0;
- }
-
- if (c_msg->seq_num != 0) {
- BT_ASSERT_PRE_MSG("Unexpected message sequence "
- "number for this message iterator: "
- "this is the first message for this "
- "stream, expecting sequence number 0: "
- "seq-num=%" PRIu64 ", %![stream-]+s",
- c_msg->seq_num, stream);
- is_valid = false;
- goto end;
- }
-
- stream_state = create_stream_state(stream);
- if (!stream_state) {
- abort();
- }
-
- g_hash_table_insert(iterator->stream_states,
- (void *) stream, stream_state);
- stream_state->expected_msg_seq_num++;
- goto end;
- }
-
- if (stream_state->is_ended) {
- /*
- * There's a new message which has a reference to a
- * stream which, from this iterator's point of view, is
- * ended ("end of stream" message was returned).
- * This is bad: the API guarantees that it can never
- * happen.
- */
- BT_ASSERT_PRE_MSG("Stream is already ended: %![stream-]+s",
- stream);
- is_valid = false;
- goto end;
- }
-
- if (c_msg->seq_num == -1ULL) {
- msg->seq_num = stream_state->expected_msg_seq_num;
- }
-
- if (c_msg->seq_num != -1ULL &&
- c_msg->seq_num != stream_state->expected_msg_seq_num) {
- BT_ASSERT_PRE_MSG("Unexpected message sequence number: "
- "seq-num=%" PRIu64 ", "
- "expected-seq-num=%" PRIu64 ", %![stream-]+s",
- c_msg->seq_num, stream_state->expected_msg_seq_num,
- stream);
- is_valid = false;
- goto end;
- }
-
- switch (c_msg->type) {
- case BT_MESSAGE_TYPE_STREAM_BEGINNING:
- BT_ASSERT_PRE_MSG("Unexpected BT_MESSAGE_TYPE_STREAM_BEGINNING "
- "message at this point: msg-seq-num=%" PRIu64 ", "
- "%![stream-]+s", c_msg->seq_num, stream);
- is_valid = false;
- goto end;
- case BT_MESSAGE_TYPE_STREAM_END:
- if (stream_state->cur_packet) {
- BT_ASSERT_PRE_MSG("Unexpected BT_MESSAGE_TYPE_STREAM_END "
- "message: missing a "
- "BT_MESSAGE_TYPE_PACKET_END message "
- "prior to this message: "
- "msg-seq-num=%" PRIu64 ", "
- "%![stream-]+s", c_msg->seq_num, stream);
- is_valid = false;
- goto end;
- }
- stream_state->expected_msg_seq_num++;
- stream_state->is_ended = true;
- goto end;
- case BT_MESSAGE_TYPE_PACKET_BEGINNING:
- if (stream_state->cur_packet) {
- BT_ASSERT_PRE_MSG("Unexpected BT_MESSAGE_TYPE_PACKET_BEGINNING "
- "message at this point: missing a "
- "BT_MESSAGE_TYPE_PACKET_END message "
- "prior to this message: "
- "msg-seq-num=%" PRIu64 ", %![stream-]+s, "
- "%![packet-]+a", c_msg->seq_num, stream,
- packet);
- is_valid = false;
- goto end;
- }
- stream_state->expected_msg_seq_num++;
- stream_state->cur_packet = packet;
- bt_object_get_no_null_check(stream_state->cur_packet);
- goto end;
- case BT_MESSAGE_TYPE_PACKET_END:
- if (!stream_state->cur_packet) {
- BT_ASSERT_PRE_MSG("Unexpected BT_MESSAGE_TYPE_PACKET_END "
- "message at this point: missing a "
- "BT_MESSAGE_TYPE_PACKET_BEGINNING message "
- "prior to this message: "
- "msg-seq-num=%" PRIu64 ", %![stream-]+s, "
- "%![packet-]+a", c_msg->seq_num, stream,
- packet);
- is_valid = false;
- goto end;
- }
- stream_state->expected_msg_seq_num++;
- BT_OBJECT_PUT_REF_AND_RESET(stream_state->cur_packet);
- goto end;
- case BT_MESSAGE_TYPE_EVENT:
- if (packet != stream_state->cur_packet) {
- BT_ASSERT_PRE_MSG("Unexpected packet for "
- "BT_MESSAGE_TYPE_EVENT message: "
- "msg-seq-num=%" PRIu64 ", %![stream-]+s, "
- "%![msg-packet-]+a, %![expected-packet-]+a",
- c_msg->seq_num, stream,
- stream_state->cur_packet, packet);
- is_valid = false;
- goto end;
- }
- stream_state->expected_msg_seq_num++;
- goto end;
- default:
- break;
- }
-
-end:
- return is_valid;
-}
-
-BT_ASSERT_PRE_FUNC
-static inline
-bool validate_messages(
- struct bt_self_component_port_input_message_iterator *iterator,
- uint64_t count)
-{
- bool ret = true;
- bt_message_array_const msgs =
- (void *) iterator->base.msgs->pdata;
- uint64_t i;
-
- for (i = 0; i < count; i++) {
- ret = validate_message(iterator, msgs[i]);
- if (!ret) {
- break;
- }
- }
-
- return ret;
-}
-
-BT_ASSERT_PRE_FUNC
-static inline bool self_comp_port_input_msg_iter_can_end(
- struct bt_self_component_port_input_message_iterator *iterator)
-{
- GHashTableIter iter;
- gpointer stream_key, state_value;
- bool ret = true;
-
- /*
- * Verify that this iterator received a
- * BT_MESSAGE_TYPE_STREAM_END message for each stream
- * which has a state.
- */
-
- g_hash_table_iter_init(&iter, iterator->stream_states);
-
- while (g_hash_table_iter_next(&iter, &stream_key, &state_value)) {
- struct stream_state *stream_state = (void *) state_value;
-
- BT_ASSERT(stream_state);
- BT_ASSERT(stream_key);
-
- if (!stream_state->is_ended) {
- BT_ASSERT_PRE_MSG("Ending message iterator, "
- "but stream is not ended: "
- "%![stream-]s", stream_key);
- ret = false;
- goto end;
- }
- }
-
-end:
- return ret;
-}
-
enum bt_message_iterator_status
bt_self_component_port_input_message_iterator_next(
struct bt_self_component_port_input_message_iterator *iterator,
bt_message_array_const *msgs, uint64_t *user_count)
{
- typedef enum bt_self_message_iterator_status (*method_t)(
- void *, bt_message_array_const, uint64_t, uint64_t *);
-
- method_t method = NULL;
- struct bt_component_class *comp_cls;
int status = BT_MESSAGE_ITERATOR_STATUS_OK;
BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
BT_ASSERT_PRE(iterator->state ==
BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE,
"Message iterator's \"next\" called, but "
- "iterator is in the wrong state: %!+i", iterator);
+ "message iterator is in the wrong state: %!+i", iterator);
BT_ASSERT(iterator->upstream_component);
BT_ASSERT(iterator->upstream_component->class);
+ BT_ASSERT_PRE(
+ bt_component_borrow_graph(iterator->upstream_component)->config_state !=
+ BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
+ "Graph is not configured: %!+g",
+ bt_component_borrow_graph(iterator->upstream_component));
BT_LIB_LOGD("Getting next self component input port "
"message iterator's messages: %!+i", iterator);
- comp_cls = iterator->upstream_component->class;
-
- /* Pick the appropriate "next" method */
- switch (comp_cls->type) {
- case BT_COMPONENT_CLASS_TYPE_SOURCE:
- {
- struct bt_component_class_source *src_comp_cls =
- (void *) comp_cls;
-
- method = (method_t) src_comp_cls->methods.msg_iter_next;
- break;
- }
- case BT_COMPONENT_CLASS_TYPE_FILTER:
- {
- struct bt_component_class_filter *flt_comp_cls =
- (void *) comp_cls;
-
- method = (method_t) flt_comp_cls->methods.msg_iter_next;
- break;
- }
- default:
- abort();
- }
/*
* Call the user's "next" method to get the next messages
* and status.
*/
- BT_ASSERT(method);
+ BT_ASSERT(iterator->methods.next);
BT_LOGD_STR("Calling user's \"next\" method.");
- status = method(iterator,
- (void *) iterator->base.msgs->pdata,
- MSG_BATCH_SIZE, user_count);
+ status = iterator->methods.next(iterator,
+ (void *) iterator->base.msgs->pdata, MSG_BATCH_SIZE,
+ user_count);
BT_LOGD("User method returned: status=%s",
bt_message_iterator_status_string(status));
if (status < 0) {
goto end;
}
- if (iterator->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED ||
- iterator->state == BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_FINALIZED_AND_ENDED) {
- /*
- * The user's "next" method, somehow, cancelled its own
- * message iterator. This can happen, for example,
- * when the user's method removes the port on which
- * there's the connection from which the iterator was
- * created. In this case, said connection is ended, and
- * all its message iterators are finalized.
- *
- * Only bt_object_put_ref() the returned message if
- * the status is BT_MESSAGE_ITERATOR_STATUS_OK
- * because otherwise this field could be garbage.
- */
- if (status == BT_MESSAGE_ITERATOR_STATUS_OK) {
- uint64_t i;
- bt_message_array_const msgs =
- (void *) iterator->base.msgs->pdata;
-
- for (i = 0; i < *user_count; i++) {
- bt_object_put_ref(msgs[i]);
- }
- }
-
- status = BT_MESSAGE_ITERATOR_STATUS_CANCELED;
- goto end;
- }
+#ifdef BT_DEV_MODE
+ /*
+ * There is no way that this iterator could have been finalized
+ * during its "next" method, as the only way to do this is to
+ * put the last iterator's reference, and this can only be done
+ * by its downstream owner.
+ *
+ * For the same reason, there is no way that this iterator could
+ * have seeked (cannot seek a self message iterator).
+ */
+ BT_ASSERT(iterator->state ==
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
+#endif
switch (status) {
case BT_MESSAGE_ITERATOR_STATUS_OK:
- BT_ASSERT_PRE(validate_messages(iterator, *user_count),
- "Messages are invalid at this point: "
- "%![msg-iter-]+i, count=%" PRIu64,
- iterator, *user_count);
+ BT_ASSERT_PRE(*user_count <= MSG_BATCH_SIZE,
+ "Invalid returned message count: greater than "
+ "batch size: count=%" PRIu64 ", batch-size=%u",
+ *user_count, MSG_BATCH_SIZE);
*msgs = (void *) iterator->base.msgs->pdata;
break;
case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
goto end;
case BT_MESSAGE_ITERATOR_STATUS_END:
- BT_ASSERT_PRE(self_comp_port_input_msg_iter_can_end(iterator),
- "Message iterator cannot end at this point: "
- "%!+i", iterator);
- BT_ASSERT(iterator->state ==
- BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
- iterator->state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED;
- BT_LOGD("Set new status: status=%s",
- bt_message_iterator_status_string(status));
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED);
goto end;
default:
/* Unknown non-error status */
return status;
}
-enum bt_message_iterator_status
-bt_port_output_message_iterator_next(
+enum bt_message_iterator_status bt_port_output_message_iterator_next(
struct bt_port_output_message_iterator *iterator,
bt_message_array_const *msgs_to_user,
uint64_t *count_to_user)
BT_ASSERT_PRE_NON_NULL(count_to_user, "Message count (output)");
BT_LIB_LOGD("Getting next output port message iterator's messages: "
"%!+i", iterator);
-
graph_status = bt_graph_consume_sink_no_check(iterator->graph,
iterator->colander);
switch (graph_status) {
return status;
}
-struct bt_component *bt_self_component_port_input_message_iterator_borrow_component(
+struct bt_component *
+bt_self_component_port_input_message_iterator_borrow_component(
struct bt_self_component_port_input_message_iterator *iterator)
{
BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
return iterator->upstream_component;
}
+const struct bt_component *
+bt_self_component_port_input_message_iterator_borrow_component_const(
+ const struct bt_self_component_port_input_message_iterator *iterator)
+{
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ return iterator->upstream_component;
+}
+
struct bt_self_component *bt_self_message_iterator_borrow_component(
struct bt_self_message_iterator *self_iterator)
{
}
struct bt_port_output_message_iterator *
-bt_port_output_message_iterator_create(
- struct bt_graph *graph,
+bt_port_output_message_iterator_create(struct bt_graph *graph,
const struct bt_port_output *output_port)
{
struct bt_port_output_message_iterator *iterator = NULL;
(void *) graph,
"Output port is not part of graph: %![graph-]+g, %![port-]+p",
graph, output_port);
+ BT_ASSERT_PRE(!graph->has_sink,
+ "Graph already has a sink component: %![graph-]+g");
/* Create message iterator */
BT_LIB_LOGD("Creating message iterator on output port: "
* member.
*/
bt_graph_set_can_consume(iterator->graph, false);
+
+ /*
+ * Also set the graph as being configured: it has no active sink
+ * anyway, so we don't need to call bt_graph_configure().
+ */
+ graph->config_state = BT_GRAPH_CONFIGURATION_STATE_CONFIGURED;
goto end;
error:
return (void *) iterator;
}
+bt_bool bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ int64_t ns_from_origin)
+{
+ bt_bool can = BT_FALSE;
+
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
+ BT_ASSERT_PRE(
+ bt_component_borrow_graph(iterator->upstream_component)->config_state !=
+ BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
+ "Graph is not configured: %!+g",
+ bt_component_borrow_graph(iterator->upstream_component));
+
+ if (iterator->methods.can_seek_ns_from_origin) {
+ can = iterator->methods.can_seek_ns_from_origin(iterator,
+ ns_from_origin);
+ goto end;
+ }
+
+ /*
+ * Automatic seeking fall back: if we can seek to the beginning,
+ * then we can automatically seek to any message.
+ */
+ if (iterator->methods.can_seek_beginning) {
+ can = iterator->methods.can_seek_beginning(iterator);
+ }
+
+end:
+ return can;
+}
+
+bt_bool bt_self_component_port_input_message_iterator_can_seek_beginning(
+ struct bt_self_component_port_input_message_iterator *iterator)
+{
+ bt_bool can = BT_FALSE;
+
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
+ BT_ASSERT_PRE(
+ bt_component_borrow_graph(iterator->upstream_component)->config_state !=
+ BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
+ "Graph is not configured: %!+g",
+ bt_component_borrow_graph(iterator->upstream_component));
+
+ if (iterator->methods.can_seek_beginning) {
+ can = iterator->methods.can_seek_beginning(iterator);
+ }
+
+ return can;
+}
+
+static inline
+void _set_iterator_state_after_seeking(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ enum bt_message_iterator_status status)
+{
+ enum bt_self_component_port_input_message_iterator_state new_state = 0;
+
+ /* Set iterator's state depending on seeking status */
+ switch (status) {
+ case BT_MESSAGE_ITERATOR_STATUS_OK:
+ new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE;
+ break;
+ case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
+ new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_AGAIN;
+ break;
+ case BT_MESSAGE_ITERATOR_STATUS_ERROR:
+ case BT_MESSAGE_ITERATOR_STATUS_NOMEM:
+ new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_LAST_SEEKING_RETURNED_ERROR;
+ break;
+ case BT_MESSAGE_ITERATOR_STATUS_END:
+ new_state = BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ENDED;
+ break;
+ default:
+ abort();
+ }
+
+ set_self_comp_port_input_msg_iterator_state(iterator, new_state);
+}
+
+#ifdef BT_DEV_MODE
+# define set_iterator_state_after_seeking _set_iterator_state_after_seeking
+#else
+# define set_iterator_state_after_seeking(_iter, _status) ((void) _iter); ((void) _status);
+#endif
+
+enum bt_message_iterator_status
+bt_self_component_port_input_message_iterator_seek_beginning(
+ struct bt_self_component_port_input_message_iterator *iterator)
+{
+ int status;
+
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
+ BT_ASSERT_PRE(
+ bt_component_borrow_graph(iterator->upstream_component)->config_state !=
+ BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
+ "Graph is not configured: %!+g",
+ bt_component_borrow_graph(iterator->upstream_component));
+ BT_ASSERT_PRE(
+ bt_self_component_port_input_message_iterator_can_seek_beginning(
+ iterator),
+ "Message iterator cannot seek beginning: %!+i", iterator);
+ BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i", iterator);
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING);
+ status = iterator->methods.seek_beginning(iterator);
+ BT_LOGD("User method returned: status=%s",
+ bt_message_iterator_status_string(status));
+ BT_ASSERT_PRE(status == BT_MESSAGE_ITERATOR_STATUS_OK ||
+ status == BT_MESSAGE_ITERATOR_STATUS_ERROR ||
+ status == BT_MESSAGE_ITERATOR_STATUS_NOMEM ||
+ status == BT_MESSAGE_ITERATOR_STATUS_AGAIN,
+ "Unexpected status: %![iter-]+i, status=%s",
+ iterator, bt_common_self_message_iterator_status_string(status));
+ set_iterator_state_after_seeking(iterator, status);
+ return status;
+}
+
+static inline
+enum bt_message_iterator_status auto_seek_handle_message(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ int64_t ns_from_origin, const struct bt_message *msg,
+ bool *got_first)
+{
+ enum bt_message_iterator_status status = BT_MESSAGE_ITERATOR_STATUS_OK;
+ int64_t msg_ns_from_origin;
+ const struct bt_clock_snapshot *clk_snapshot = NULL;
+ int ret;
+
+ BT_ASSERT(msg);
+ BT_ASSERT(got_first);
+
+ switch (msg->type) {
+ case BT_MESSAGE_TYPE_EVENT:
+ {
+ const struct bt_message_event *event_msg =
+ (const void *) msg;
+
+ clk_snapshot = event_msg->default_cs;
+ BT_ASSERT_PRE(clk_snapshot,
+ "Event message has no default clock snapshot: %!+n",
+ event_msg);
+ break;
+ }
+ case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
+ {
+ const struct bt_message_message_iterator_inactivity *inactivity_msg =
+ (const void *) msg;
+
+ clk_snapshot = inactivity_msg->default_cs;
+ BT_ASSERT(clk_snapshot);
+ break;
+ }
+ case BT_MESSAGE_TYPE_PACKET_BEGINNING:
+ case BT_MESSAGE_TYPE_PACKET_END:
+ {
+ const struct bt_message_packet *packet_msg =
+ (const void *) msg;
+
+ clk_snapshot = packet_msg->default_cs;
+ BT_ASSERT_PRE(clk_snapshot,
+ "Packet message has no default clock snapshot: %!+n",
+ packet_msg);
+ break;
+ }
+ case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
+ case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
+ {
+ struct bt_message_discarded_items *msg_disc_items =
+ (void *) msg;
+
+ BT_ASSERT_PRE(msg_disc_items->default_begin_cs &&
+ msg_disc_items->default_end_cs,
+ "Discarded events/packets message has no default clock snapshots: %!+n",
+ msg_disc_items);
+ ret = bt_clock_snapshot_get_ns_from_origin(
+ msg_disc_items->default_begin_cs,
+ &msg_ns_from_origin);
+ if (ret) {
+ status = BT_MESSAGE_ITERATOR_STATUS_ERROR;
+ goto end;
+ }
+
+ if (msg_ns_from_origin >= ns_from_origin) {
+ *got_first = true;
+ goto push_msg;
+ }
+
+ ret = bt_clock_snapshot_get_ns_from_origin(
+ msg_disc_items->default_end_cs,
+ &msg_ns_from_origin);
+ if (ret) {
+ status = BT_MESSAGE_ITERATOR_STATUS_ERROR;
+ goto end;
+ }
+
+ if (msg_ns_from_origin >= ns_from_origin) {
+ /*
+ * The discarded items message's beginning time
+ * is before the requested seeking time, but its
+ * end time is after. Modify the message so as
+ * to set its beginning time to the requested
+ * seeking time, and make its item count unknown
+ * as we don't know if items were really
+ * discarded within the new time range.
+ */
+ uint64_t new_begin_raw_value;
+
+ ret = bt_clock_class_clock_value_from_ns_from_origin(
+ msg_disc_items->default_end_cs->clock_class,
+ ns_from_origin, &new_begin_raw_value);
+ if (ret) {
+ status = BT_MESSAGE_ITERATOR_STATUS_ERROR;
+ goto end;
+ }
+
+ bt_clock_snapshot_set_raw_value(
+ msg_disc_items->default_begin_cs,
+ new_begin_raw_value);
+ msg_disc_items->count.base.avail =
+ BT_PROPERTY_AVAILABILITY_NOT_AVAILABLE;
+
+ /*
+ * It is safe to push it because its beginning
+ * time is exactly the requested seeking time.
+ */
+ goto push_msg;
+ } else {
+ goto skip_msg;
+ }
+ }
+ case BT_MESSAGE_TYPE_STREAM_ACTIVITY_BEGINNING:
+ {
+ const struct bt_message_stream_activity *stream_act_msg =
+ (const void *) msg;
+
+ switch (stream_act_msg->default_cs_state) {
+ case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_UNKNOWN:
+ case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_INFINITE:
+ /*
+ * -inf is always less than any requested time,
+ * and we can't assume any specific time for an
+ * unknown clock snapshot, so skip this.
+ */
+ goto skip_msg;
+ case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_KNOWN:
+ clk_snapshot = stream_act_msg->default_cs;
+ BT_ASSERT(clk_snapshot);
+ break;
+ default:
+ abort();
+ }
+
+ break;
+ }
+ case BT_MESSAGE_TYPE_STREAM_ACTIVITY_END:
+ {
+ const struct bt_message_stream_activity *stream_act_msg =
+ (const void *) msg;
+
+ switch (stream_act_msg->default_cs_state) {
+ case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_UNKNOWN:
+ /*
+ * We can't assume any specific time for an
+ * unknown clock snapshot, so skip this.
+ */
+ goto skip_msg;
+ case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_INFINITE:
+ /*
+ * +inf is always greater than any requested
+ * time.
+ */
+ *got_first = true;
+ goto push_msg;
+ case BT_MESSAGE_STREAM_ACTIVITY_CLOCK_SNAPSHOT_STATE_KNOWN:
+ clk_snapshot = stream_act_msg->default_cs;
+ BT_ASSERT(clk_snapshot);
+ break;
+ default:
+ abort();
+ }
+
+ break;
+ }
+ case BT_MESSAGE_TYPE_STREAM_BEGINNING:
+ case BT_MESSAGE_TYPE_STREAM_END:
+ /* Ignore */
+ goto skip_msg;
+ default:
+ abort();
+ }
+
+ BT_ASSERT(clk_snapshot);
+ ret = bt_clock_snapshot_get_ns_from_origin(clk_snapshot,
+ &msg_ns_from_origin);
+ if (ret) {
+ status = BT_MESSAGE_ITERATOR_STATUS_ERROR;
+ goto end;
+ }
+
+ if (msg_ns_from_origin >= ns_from_origin) {
+ *got_first = true;
+ goto push_msg;
+ }
+
+skip_msg:
+ bt_object_put_no_null_check(msg);
+ msg = NULL;
+ goto end;
+
+push_msg:
+ g_queue_push_head(iterator->auto_seek_msgs, (void *) msg);
+ msg = NULL;
+
+end:
+ BT_ASSERT(!msg || status != BT_MESSAGE_ITERATOR_STATUS_OK);
+ return status;
+}
+
+static
+enum bt_message_iterator_status find_message_ge_ns_from_origin(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ int64_t ns_from_origin)
+{
+ int status;
+ enum bt_self_component_port_input_message_iterator_state init_state =
+ iterator->state;
+ const struct bt_message *messages[MSG_BATCH_SIZE];
+ uint64_t user_count = 0;
+ uint64_t i;
+ bool got_first = false;
+
+ BT_ASSERT(iterator);
+ memset(&messages[0], 0, sizeof(messages[0]) * MSG_BATCH_SIZE);
+
+ /*
+ * Make this iterator temporarily active (not seeking) to call
+ * the "next" method.
+ */
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
+
+ BT_ASSERT(iterator->methods.next);
+
+ while (!got_first) {
+ /*
+ * Call the user's "next" method to get the next
+ * messages and status.
+ */
+ BT_LOGD_STR("Calling user's \"next\" method.");
+ status = iterator->methods.next(iterator,
+ &messages[0], MSG_BATCH_SIZE, &user_count);
+ BT_LOGD("User method returned: status=%s",
+ bt_message_iterator_status_string(status));
+
+#ifdef BT_DEV_MODE
+ /*
+ * The user's "next" method must not do any action which
+ * would change the iterator's state.
+ */
+ BT_ASSERT(iterator->state ==
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_ACTIVE);
+#endif
+
+ switch (status) {
+ case BT_MESSAGE_ITERATOR_STATUS_OK:
+ BT_ASSERT_PRE(user_count <= MSG_BATCH_SIZE,
+ "Invalid returned message count: greater than "
+ "batch size: count=%" PRIu64 ", batch-size=%u",
+ user_count, MSG_BATCH_SIZE);
+ break;
+ case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
+ case BT_MESSAGE_ITERATOR_STATUS_ERROR:
+ case BT_MESSAGE_ITERATOR_STATUS_NOMEM:
+ case BT_MESSAGE_ITERATOR_STATUS_END:
+ goto end;
+ default:
+ abort();
+ }
+
+ for (i = 0; i < user_count; i++) {
+ if (got_first) {
+ g_queue_push_head(iterator->auto_seek_msgs,
+ (void *) messages[i]);
+ messages[i] = NULL;
+ continue;
+ }
+
+ status = auto_seek_handle_message(iterator,
+ ns_from_origin, messages[i], &got_first);
+ if (status == BT_MESSAGE_ITERATOR_STATUS_OK) {
+ /* Message was either pushed or moved */
+ messages[i] = NULL;
+ } else {
+ goto end;
+ }
+ }
+ }
+
+end:
+ for (i = 0; i < user_count; i++) {
+ if (messages[i]) {
+ bt_object_put_no_null_check(messages[i]);
+ }
+ }
+
+ set_self_comp_port_input_msg_iterator_state(iterator, init_state);
+ return status;
+}
+
+static
+enum bt_self_message_iterator_status post_auto_seek_next(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ bt_message_array_const msgs, uint64_t capacity,
+ uint64_t *count)
+{
+ BT_ASSERT(!g_queue_is_empty(iterator->auto_seek_msgs));
+ *count = 0;
+
+ /*
+ * Move auto-seek messages to the output array (which is this
+ * iterator's base message array).
+ */
+ while (capacity > 0 && !g_queue_is_empty(iterator->auto_seek_msgs)) {
+ msgs[*count] = g_queue_pop_tail(iterator->auto_seek_msgs);
+ capacity--;
+ (*count)++;
+ }
+
+ BT_ASSERT(*count > 0);
+
+ if (g_queue_is_empty(iterator->auto_seek_msgs)) {
+ /* No more auto-seek messages */
+ switch (iterator->upstream_component->class->type) {
+ case BT_COMPONENT_CLASS_TYPE_SOURCE:
+ {
+ struct bt_component_class_source *src_comp_cls =
+ (void *) iterator->upstream_component->class;
+
+ iterator->methods.next =
+ (bt_self_component_port_input_message_iterator_next_method)
+ src_comp_cls->methods.msg_iter_next;
+ break;
+ }
+ case BT_COMPONENT_CLASS_TYPE_FILTER:
+ {
+ struct bt_component_class_filter *flt_comp_cls =
+ (void *) iterator->upstream_component->class;
+
+ iterator->methods.next =
+ (bt_self_component_port_input_message_iterator_next_method)
+ flt_comp_cls->methods.msg_iter_next;
+ break;
+ }
+ default:
+ abort();
+ }
+ }
+
+ return BT_SELF_MESSAGE_ITERATOR_STATUS_OK;
+}
+
+enum bt_message_iterator_status
+bt_self_component_port_input_message_iterator_seek_ns_from_origin(
+ struct bt_self_component_port_input_message_iterator *iterator,
+ int64_t ns_from_origin)
+{
+ int status;
+
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ BT_ASSERT_PRE_ITER_HAS_STATE_TO_SEEK(iterator);
+ BT_ASSERT_PRE(
+ bt_component_borrow_graph(iterator->upstream_component)->config_state !=
+ BT_GRAPH_CONFIGURATION_STATE_CONFIGURING,
+ "Graph is not configured: %!+g",
+ bt_component_borrow_graph(iterator->upstream_component));
+ BT_ASSERT_PRE(
+ bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
+ iterator, ns_from_origin),
+ "Message iterator cannot seek nanoseconds from origin: %!+i, "
+ "ns-from-origin=%" PRId64, iterator, ns_from_origin);
+ set_self_comp_port_input_msg_iterator_state(iterator,
+ BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_STATE_SEEKING);
+
+ if (iterator->methods.seek_ns_from_origin) {
+ BT_LIB_LOGD("Calling user's \"seek nanoseconds from origin\" method: "
+ "%![iter-]+i, ns=%" PRId64, iterator, ns_from_origin);
+ status = iterator->methods.seek_ns_from_origin(iterator,
+ ns_from_origin);
+ BT_LOGD("User method returned: status=%s",
+ bt_message_iterator_status_string(status));
+ BT_ASSERT_PRE(status == BT_MESSAGE_ITERATOR_STATUS_OK ||
+ status == BT_MESSAGE_ITERATOR_STATUS_ERROR ||
+ status == BT_MESSAGE_ITERATOR_STATUS_NOMEM ||
+ status == BT_MESSAGE_ITERATOR_STATUS_AGAIN,
+ "Unexpected status: %![iter-]+i, status=%s",
+ iterator,
+ bt_common_self_message_iterator_status_string(status));
+ } else {
+ /* Start automatic seeking: seek beginning first */
+ BT_ASSERT(iterator->methods.can_seek_beginning(iterator));
+ BT_ASSERT(iterator->methods.seek_beginning);
+ BT_LIB_LOGD("Calling user's \"seek beginning\" method: %!+i",
+ iterator);
+ status = iterator->methods.seek_beginning(iterator);
+ BT_LOGD("User method returned: status=%s",
+ bt_message_iterator_status_string(status));
+ BT_ASSERT_PRE(status == BT_MESSAGE_ITERATOR_STATUS_OK ||
+ status == BT_MESSAGE_ITERATOR_STATUS_ERROR ||
+ status == BT_MESSAGE_ITERATOR_STATUS_NOMEM ||
+ status == BT_MESSAGE_ITERATOR_STATUS_AGAIN,
+ "Unexpected status: %![iter-]+i, status=%s",
+ iterator,
+ bt_common_self_message_iterator_status_string(status));
+ switch (status) {
+ case BT_MESSAGE_ITERATOR_STATUS_OK:
+ break;
+ case BT_MESSAGE_ITERATOR_STATUS_ERROR:
+ case BT_MESSAGE_ITERATOR_STATUS_NOMEM:
+ case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
+ goto end;
+ default:
+ abort();
+ }
+
+ /*
+ * Find the first message which has a default clock
+ * snapshot greater than or equal to the requested
+ * seeking time, and move the received messages from
+ * this point in the batch to this iterator's auto-seek
+ * message queue.
+ */
+ while (!g_queue_is_empty(iterator->auto_seek_msgs)) {
+ bt_object_put_no_null_check(
+ g_queue_pop_tail(iterator->auto_seek_msgs));
+ }
+
+ status = find_message_ge_ns_from_origin(iterator,
+ ns_from_origin);
+ switch (status) {
+ case BT_MESSAGE_ITERATOR_STATUS_OK:
+ case BT_MESSAGE_ITERATOR_STATUS_END:
+ /*
+ * If there are messages in the auto-seek
+ * message queue, replace the user's "next"
+ * method with a custom, temporary "next" method
+ * which returns them.
+ */
+ if (!g_queue_is_empty(iterator->auto_seek_msgs)) {
+ iterator->methods.next =
+ (bt_self_component_port_input_message_iterator_next_method)
+ post_auto_seek_next;
+ }
+
+ /*
+ * `BT_MESSAGE_ITERATOR_STATUS_END` becomes
+ * `BT_MESSAGE_ITERATOR_STATUS_OK`: the next
+ * time this iterator's "next" method is called,
+ * it will return
+ * `BT_MESSAGE_ITERATOR_STATUS_END`.
+ */
+ status = BT_MESSAGE_ITERATOR_STATUS_OK;
+ break;
+ case BT_MESSAGE_ITERATOR_STATUS_ERROR:
+ case BT_MESSAGE_ITERATOR_STATUS_NOMEM:
+ case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
+ goto end;
+ default:
+ abort();
+ }
+ }
+
+end:
+ set_iterator_state_after_seeking(iterator, status);
+ return status;
+}
+
+static inline
+bt_self_component_port_input_message_iterator *
+borrow_output_port_message_iterator_upstream_iterator(
+ struct bt_port_output_message_iterator *iterator)
+{
+ struct bt_component_class_sink_colander_priv_data *colander_data;
+
+ BT_ASSERT(iterator);
+ colander_data = (void *) iterator->colander->parent.user_data;
+ BT_ASSERT(colander_data);
+ BT_ASSERT(colander_data->msg_iter);
+ return colander_data->msg_iter;
+}
+
+bt_bool bt_port_output_message_iterator_can_seek_ns_from_origin(
+ struct bt_port_output_message_iterator *iterator,
+ int64_t ns_from_origin)
+{
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ return bt_self_component_port_input_message_iterator_can_seek_ns_from_origin(
+ borrow_output_port_message_iterator_upstream_iterator(
+ iterator), ns_from_origin);
+}
+
+bt_bool bt_port_output_message_iterator_can_seek_beginning(
+ struct bt_port_output_message_iterator *iterator)
+{
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ return bt_self_component_port_input_message_iterator_can_seek_beginning(
+ borrow_output_port_message_iterator_upstream_iterator(
+ iterator));
+}
+
+enum bt_message_iterator_status bt_port_output_message_iterator_seek_ns_from_origin(
+ struct bt_port_output_message_iterator *iterator,
+ int64_t ns_from_origin)
+{
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ return bt_self_component_port_input_message_iterator_seek_ns_from_origin(
+ borrow_output_port_message_iterator_upstream_iterator(iterator),
+ ns_from_origin);
+}
+
+enum bt_message_iterator_status bt_port_output_message_iterator_seek_beginning(
+ struct bt_port_output_message_iterator *iterator)
+{
+ BT_ASSERT_PRE_NON_NULL(iterator, "Message iterator");
+ return bt_self_component_port_input_message_iterator_seek_beginning(
+ borrow_output_port_message_iterator_upstream_iterator(
+ iterator));
+}
+
void bt_port_output_message_iterator_get_ref(
const struct bt_port_output_message_iterator *iterator)
{
projects / babeltrace.git / blobdiff