consumerd: remove unused function consumer_del_data_stream

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

diff --git a/src/common/consumer/consumer.c b/src/common/consumer/consumer.c
index 0086d748f0c6fe17fd54e87ccffdf7384f2ae447..d903c54c2eff84ad30923d789312a3d3d3741365 100644 (file)
--- a/src/common/consumer/consumer.c
+++ b/src/common/consumer/consumer.c
@@ -709,11 +709,6 @@ void consumer_add_data_stream(struct lttng_consumer_stream *stream)
        pthread_mutex_unlock(&consumer_data.lock);
 }
 
-void consumer_del_data_stream(struct lttng_consumer_stream *stream)
-{
-       consumer_del_stream(stream, data_ht);
-}
-
 /*
  * Add relayd socket to global consumer data hashtable. RCU read side lock MUST
  * be acquired before calling this.
@@ -1014,13 +1009,6 @@ int lttng_consumer_channel_set_trace_chunk(
                struct lttng_consumer_channel *channel,
                struct lttng_trace_chunk *new_trace_chunk)
 {
-       int ret = 0;
-       const bool is_local_trace = channel->relayd_id == -1ULL;
-       bool update_stream_trace_chunk;
-       struct cds_lfht_iter iter;
-       struct lttng_consumer_stream *stream;
-       unsigned long channel_hash;
-
        pthread_mutex_lock(&channel->lock);
        if (channel->is_deleted) {
                /*
@@ -1032,24 +1020,6 @@ int lttng_consumer_channel_set_trace_chunk(
                 */
                goto end;
        }
-       /*
-        * A stream can transition to a state where it and its channel
-        * no longer belong to a trace chunk. For instance, this happens when
-        * a session is rotated while it is inactive. After the rotation
-        * of an inactive session completes, the channel and its streams no
-        * longer belong to a trace chunk.
-        *
-        * However, if a session is stopped, rotated, and started again,
-        * the session daemon will create a new chunk and send it to its peers.
-        * In that case, the streams' transition to a new chunk can be performed
-        * immediately.
-        *
-        * This trace chunk transition could also be performed lazily when
-        * a buffer is consumed. However, creating the files here allows the
-        * consumer daemon to report any creation error to the session daemon
-        * and cause the start of the tracing session to fail.
-        */
-       update_stream_trace_chunk = !channel->trace_chunk && new_trace_chunk;
 
        /*
         * The acquisition of the reference cannot fail (barring
@@ -1065,59 +1035,9 @@ int lttng_consumer_channel_set_trace_chunk(
 
        lttng_trace_chunk_put(channel->trace_chunk);
        channel->trace_chunk = new_trace_chunk;
-       if (!is_local_trace || !new_trace_chunk) {
-               /* Not an error. */
-               goto end;
-       }
-
-       if (!update_stream_trace_chunk) {
-               goto end;
-       }
-
-       channel_hash = consumer_data.stream_per_chan_id_ht->hash_fct(
-                       &channel->key, lttng_ht_seed);
-       rcu_read_lock();
-       cds_lfht_for_each_entry_duplicate(consumer_data.stream_per_chan_id_ht->ht,
-                       channel_hash,
-                       consumer_data.stream_per_chan_id_ht->match_fct,
-                       &channel->key, &iter, stream, node_channel_id.node) {
-               bool acquired_reference, should_regenerate_metadata = false;
-
-               acquired_reference = lttng_trace_chunk_get(channel->trace_chunk);
-               assert(acquired_reference);
-
-               pthread_mutex_lock(&stream->lock);
-
-               /*
-                * On a transition from "no-chunk" to a new chunk, a metadata
-                * stream's content must be entirely dumped. This must occcur
-                * _after_ the creation of the metadata stream's output files
-                * as the consumption thread (not necessarily the one executing
-                * this) may start to consume during the call to
-                * consumer_metadata_stream_dump().
-                */
-               should_regenerate_metadata =
-                       stream->metadata_flag &&
-                       !stream->trace_chunk && channel->trace_chunk;
-               stream->trace_chunk = channel->trace_chunk;
-               ret = consumer_stream_create_output_files(stream, true);
-               if (ret) {
-                       pthread_mutex_unlock(&stream->lock);
-                       goto end_rcu_unlock;
-               }
-               if (should_regenerate_metadata) {
-                       ret = consumer_metadata_stream_dump(stream);
-               }
-               pthread_mutex_unlock(&stream->lock);
-               if (ret) {
-                       goto end_rcu_unlock;
-               }
-       }
-end_rcu_unlock:
-       rcu_read_unlock();
 end:
        pthread_mutex_unlock(&channel->lock);
-       return ret;
+       return 0;
 }
 
 /*
@@ -4801,7 +4721,7 @@ enum lttcomm_return_code lttng_consumer_trace_chunk_exists(
                /* Internal error. */
                ERR("Failed to query the existence of a trace chunk");
                ret_code = LTTCOMM_CONSUMERD_FATAL;
-               goto end_rcu_unlock;
+               goto end;
        }
        DBG("Trace chunk %s locally",
                        chunk_exists_local ? "exists" : "does not exist");