X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer.h;h=0f89d8eedc81dccc6548e12970b5a91b21dc5781;hb=9c9abe17599b58b2f8348c23f1dad263e5965cf8;hp=e50835e019f27176143ba857a572b52415c919f4;hpb=b7d17fdfe9a0f52c272b4d2640a8e9b4b396ac1a;p=lttng-tools.git

diff --git a/src/common/consumer.h b/src/common/consumer.h
index e50835e01..0f89d8eed 100644
--- a/src/common/consumer.h
+++ b/src/common/consumer.h
@@ -58,6 +58,7 @@ enum lttng_consumer_command {
 	LTTNG_CONSUMER_SNAPSHOT_CHANNEL,
 	LTTNG_CONSUMER_SNAPSHOT_METADATA,
 	LTTNG_CONSUMER_STREAMS_SENT,
+	LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL,
 };
 
 /* State of each fd in consumer */
@@ -238,6 +239,25 @@ 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.