X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Fconsumer.h;h=cd3476675c4e465d8f46f2b5aef8ccc4e38a8e9b;hb=f21fa4fd488ef62230e01c9076f2aab06f2b6b7b;hp=ac3b4903f6b8c3e945432b35a471100a8998aede;hpb=36b637f02bbcd3855d0b7e62ebaa477031b343a5;p=lttng-tools.git

diff --git a/src/common/consumer.h b/src/common/consumer.h
index ac3b4903f..cd3476675 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 */
@@ -243,6 +244,25 @@ 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.