Fix: ust-consumer: segfault on snapshot after regenerate metadata

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

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index f75246d36970e6e4b193c427a7ab7e09ee044d84..e927d19364b44ac6dfdb554d91b9a9ee18ca040f 100644 (file)
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -389,6 +389,13 @@ typedef void (*lock_cb)(struct lttng_consumer_stream *);
  */
 typedef void (*unlock_cb)(struct lttng_consumer_stream *);
 
+/*
+ * Assert that the stream and channel lock and any other stream type specific
+ * lock that need to be acquired during the processing of a read_subbuffer
+ * operation is acquired.
+ */
+typedef void (*assert_locked_cb)(struct lttng_consumer_stream *);
+
 /*
  * Invoked when a subbuffer's metadata version does not match the last
  * known metadata version.
@@ -640,6 +647,7 @@ struct lttng_consumer_stream {
                send_live_beacon_cb send_live_beacon;
                on_sleep_cb on_sleep;
                unlock_cb unlock;
+               assert_locked_cb assert_locked;
        } read_subbuffer_ops;
        struct metadata_bucket *metadata_bucket;
 };