Fix: consumerd: user space metadata not regenerated

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

diff --git a/src/common/consumer/consumer-stream.h b/src/common/consumer/consumer-stream.h
index c5fb09732d7a94f065480b01bedd4f683e0daf39..61dc773f78a215fcdc37d066af4e8b1a1783e0a5 100644 (file)
--- a/src/common/consumer/consumer-stream.h
+++ b/src/common/consumer/consumer-stream.h
@@ -20,6 +20,24 @@
 
 #include "consumer.h"
 
+/*
+ * Create a consumer stream.
+ *
+ * The channel lock MUST be acquired.
+ */
+struct lttng_consumer_stream *consumer_stream_create(
+               struct lttng_consumer_channel *channel,
+               uint64_t channel_key,
+               uint64_t stream_key,
+               const char *channel_name,
+               uint64_t relayd_id,
+               uint64_t session_id,
+               struct lttng_trace_chunk *trace_chunk,
+               int cpu,
+               int *alloc_ret,
+               enum consumer_channel_type type,
+               unsigned int monitor);
+
 /*
  * Close stream's file descriptors and, if needed, close stream also on the
  * relayd side.
@@ -77,4 +95,49 @@ int consumer_stream_write_index(struct lttng_consumer_stream *stream,
 int consumer_stream_sync_metadata(struct lttng_consumer_local_data *ctx,
                uint64_t session_id);
 
+/*
+ * Create the output files of a local stream.
+ *
+ * This must be called with the channel's and the stream's lock held.
+ */
+int consumer_stream_create_output_files(struct lttng_consumer_stream *stream,
+               bool create_index);
+
+/*
+ * Rotate the output files of a local stream. This will change the
+ * active output files of both the binary and index in accordance
+ * with the stream's configuration (stream file count).
+ *
+ * This must be called with the channel's and the stream's lock held.
+ */
+int consumer_stream_rotate_output_files(struct lttng_consumer_stream *stream);
+
+/*
+ * Indicates whether or not a stream is logically deleted. A deleted stream
+ * should no longer be used; its existence is only garanteed by the RCU lock
+ * held by the caller.
+ *
+ * This function must be called with the RCU read side lock held.
+ */
+bool consumer_stream_is_deleted(struct lttng_consumer_stream *stream);
+
+/*
+ * Enable metadata bucketization. This must only be enabled if the tracer
+ * provides a reliable metadata `coherent` flag.
+ *
+ * This must be called on initialization before any subbuffer is consumed.
+ */
+int consumer_stream_enable_metadata_bucketization(
+               struct lttng_consumer_stream *stream);
+
+/*
+ * Set the version of a metadata stream (i.e. following a metadata
+ * regeneration).
+ *
+ * Changing the version of a metadata stream will cause any bucketized metadata
+ * to be discarded and will mark the metadata stream for future `reset`.
+ */
+void consumer_stream_metadata_set_version(
+               struct lttng_consumer_stream *stream, uint64_t new_version);
+
 #endif /* LTTNG_CONSUMER_STREAM_H */