Consumer perform the rotation when extracting a packet

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

diff --git a/src/common/consumer/consumer.h b/src/common/consumer/consumer.h
index 9e77ff999601f1ed3efddd67e5dcf378eb5c2760..181c8d8ec2b4e3f5450e5138801740b33a32c813 100644 (file)
--- a/src/common/consumer/consumer.h
+++ b/src/common/consumer/consumer.h
@@ -430,6 +430,14 @@ struct lttng_consumer_stream {
        pthread_cond_t metadata_rdv;
        pthread_mutex_t metadata_rdv_lock;
 
+       /*
+        * rotate_position represents the position in the ring-buffer that has to
+        * be flushed to disk to complete the ongoing rotation. When that position
+        * is reached, this tracefile can be closed and a new one is created in
+        * channel_read_only_attributes.path.
+        */
+       unsigned long rotate_position;
+
        /*
         * Read-only copies of channel values. We cannot safely access the
         * channel from a stream, so we need to have a local copy of these
@@ -441,6 +449,12 @@ struct lttng_consumer_stream {
                uint64_t tracefile_size;
        } channel_read_only_attributes;
 
+       /*
+        * Flag to inform the data or metadata thread that a stream is
+        * ready to be rotated.
+        */
+       bool rotate_ready;
+
        /* Indicate if the stream still has some data to be read. */
        unsigned int has_data:1;
        /*
@@ -803,8 +817,9 @@ void consumer_del_stream_for_data(struct lttng_consumer_stream *stream);
 void consumer_add_metadata_stream(struct lttng_consumer_stream *stream);
 void consumer_del_stream_for_metadata(struct lttng_consumer_stream *stream);
 int consumer_create_index_file(struct lttng_consumer_stream *stream);
+int lttng_consumer_stream_is_rotate_ready(struct lttng_consumer_stream *stream);
 int lttng_consumer_rotate_stream(struct lttng_consumer_local_data *ctx,
-               struct lttng_consumer_stream *stream);
+               struct lttng_consumer_stream *stream, bool *rotated);
 int lttng_consumer_rotate_rename(const char *current_path, const char *new_path,
                uid_t uid, gid_t gid, uint64_t relayd_id);
 void lttng_consumer_reset_stream_rotate_state(struct lttng_consumer_stream *stream);