consumer: introduce channel lock

[lttng-tools.git] / src / common / consumer.h

diff --git a/src/common/consumer.h b/src/common/consumer.h
index dd26e51834d5738a653380b0ab8e872902d565ed..3a0c6c8d8f5e3a737e9ce6da64c3fb4e09c4dd21 100644 (file)
--- a/src/common/consumer.h
+++ b/src/common/consumer.h
@@ -168,6 +168,16 @@ struct lttng_consumer_channel {
         * monitor list of the channel.
         */
        unsigned int monitor;
+
+       /*
+        * Channel lock.
+        *
+        * This is nested INSIDE the consumer data lock.
+        * This is nested OUTSIDE the metadata cache lock.
+        * This is nested OUTSIDE stream lock.
+        * This is nested OUTSIDE consumer_relayd_sock_pair lock.
+        */
+       pthread_mutex_t lock;
 };
 
 /*
@@ -247,6 +257,7 @@ struct lttng_consumer_stream {
         *
         * This is nested INSIDE the consumer_data lock.
         * This is nested INSIDE the metadata cache lock.
+        * This is nested INSIDE the channel lock.
         * This is nested OUTSIDE consumer_relayd_sock_pair lock.
         */
        pthread_mutex_t lock;