X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=src%2Fcommon%2Fust-consumer%2Fust-consumer.cpp;h=30d1f102142781289be72a965a9b8bfe719486ff;hb=9cc4ae91845c03b141af7ef58a86a2a9689dfafd;hp=0933c33c8b77e4dae3179b741fbe2b08c8e38dce;hpb=328c2fe7297c941aa9cbcfa4ce944fca1bd7300f;p=lttng-tools.git

diff --git a/src/common/ust-consumer/ust-consumer.cpp b/src/common/ust-consumer/ust-consumer.cpp
index 0933c33c8..30d1f1021 100644
--- a/src/common/ust-consumer/ust-consumer.cpp
+++ b/src/common/ust-consumer/ust-consumer.cpp
@@ -702,6 +702,14 @@ static int flush_channel(uint64_t chan_key)
 next:
 		pthread_mutex_unlock(&stream->lock);
 	}
+
+	/*
+	 * Send one last buffer statistics update to the session daemon. This
+	 * ensures that the session daemon gets at least one statistics update
+	 * per channel even in the case of short-lived channels, such as when a
+	 * short-lived app is traced in per-pid mode.
+	 */
+	sample_and_send_channel_buffer_stats(channel);
 error:
 	rcu_read_unlock();
 	return ret;
@@ -2423,8 +2431,9 @@ void lttng_ustconsumer_on_stream_hangup(struct lttng_consumer_stream *stream)
 			stream->quiescent = true;
 		}
 	}
-	pthread_mutex_unlock(&stream->lock);
+
 	stream->hangup_flush_done = 1;
+	pthread_mutex_unlock(&stream->lock);
 }
 
 void lttng_ustconsumer_del_channel(struct lttng_consumer_channel *chan)