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 7f8d14704d23ec6a8ad967ecc951f09d6d017ced..737f2a42c449099035bbf8c671090c4fb1234310 100644 (file)
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -396,6 +396,13 @@ 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.
@@ -647,6 +654,7 @@ 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;
 };