X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Flib%2Fgraph%2Fmessage%2Fiterator.h;fp=src%2Flib%2Fgraph%2Fmessage%2Fiterator.h;h=36795bd083baa4e7902ada7a788d87604e37a3c7;hb=54b135a0370e1ff40ff39515058b2f941955cd40;hp=a174f3e9c17f99c4fb879c7db4c067c314250f5a;hpb=d79a835343447b4e7f62af721cfb2a05fa9f450a;p=babeltrace.git

diff --git a/src/lib/graph/message/iterator.h b/src/lib/graph/message/iterator.h
index a174f3e9..36795bd0 100644
--- a/src/lib/graph/message/iterator.h
+++ b/src/lib/graph/message/iterator.h
@@ -32,6 +32,7 @@
 #include <babeltrace2/types.h>
 #include "common/assert.h"
 #include <stdbool.h>
+#include <compat/uuid.h>
 
 struct bt_port;
 struct bt_graph;
@@ -113,6 +114,40 @@ struct bt_self_component_port_input_message_iterator {
 
 	enum bt_self_component_port_input_message_iterator_state state;
 
+	/*
+	 * Timestamp of the last received message (or INT64_MIN in the
+	 * beginning, or after a seek to beginning).
+	 */
+	int64_t last_ns_from_origin;
+
+	struct {
+		enum {
+			/* We haven't recorded clock properties yet. */
+			CLOCK_EXPECTATION_UNSET,
+
+			/* Expect to have no clock. */
+			CLOCK_EXPECTATION_NONE,
+
+			/* Clock with origin_is_unix_epoch true.*/
+			CLOCK_EXPECTATION_ORIGIN_UNIX,
+
+			/* Clock with origin_is_unix_epoch false, with a UUID.*/
+			CLOCK_EXPECTATION_ORIGIN_OTHER_UUID,
+
+			/* Clock with origin_is_unix_epoch false, without a UUID.*/
+			CLOCK_EXPECTATION_ORIGIN_OTHER_NO_UUID,
+		} type;
+
+		/*
+		 * Expected UUID of the clock, if `type`is CLOCK_EXPECTATION_ORIGIN_OTHER_UUID.
+		 *
+		 * If the clock's origin is the unix epoch, the UUID is
+		 * irrelevant (as the clock will be correlatable with other
+		 * clocks having the same origin).
+		 */
+		uint8_t uuid[BABELTRACE_UUID_LEN];
+	} clock_expectation;
+
 	/*
 	 * Data necessary for auto seek (the seek-to-beginning then fast-forward
 	 * seek strategy).