+ /*
+ * Lock to use the stream FDs since they are used between threads. Using
+ * this lock with network streaming, when using the control mutex of a
+ * consumer_relayd_sock_pair, make sure to acquire this lock BEFORE locking
+ * it and releasing it AFTER the control mutex unlock.
+ */
+ pthread_mutex_t lock;
+ /* Tracing session id */
+ uint64_t session_id;