X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fconsumer%2Fconsumer.h;h=db5cbf6a01004710de022fae90bffff8e31bb53e;hp=59764e105c36ef086c77dec6508312e7d8b54d58;hb=0dd01979d6f26886199ef746377640b57260421c;hpb=0f6fd3631d4ef411b09f3136ca6929b31014d27e

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index 59764e105..db5cbf6a0 100644
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -60,6 +60,7 @@ enum lttng_consumer_command {
 	LTTNG_CONSUMER_STREAMS_SENT,
 	LTTNG_CONSUMER_DISCARDED_EVENTS,
 	LTTNG_CONSUMER_LOST_PACKETS,
+	LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL,
 };
 
 /* State of each fd in consumer */
@@ -249,6 +250,25 @@ struct lttng_consumer_stream {
 	int data_read;
 	int hangup_flush_done;
 
+	/*
+	 * Whether the stream is in a "complete" state (e.g. it does not have a
+	 * partially written sub-buffer.
+	 *
+	 * Initialized to "false" on stream creation (first packet is empty).
+	 *
+	 * The various transitions of the quiescent state are:
+	 *     - On "start" tracing: set to false, since the stream is not
+	 *       "complete".
+	 *     - On "stop" tracing: if !quiescent -> flush FINAL (update
+	 *       timestamp_end), and set to true; the stream has entered a
+	 *       complete/quiescent state.
+	 *     - On "destroy" or stream/application hang-up: if !quiescent ->
+	 *       flush FINAL, and set to true.
+	 *
+	 * NOTE: Update and read are protected by the stream lock.
+	 */
+	bool quiescent;
+
 	/*
 	 * metadata_timer_lock protects flags waiting_on_metadata and
 	 * missed_metadata_flush.