bool StoreSession::start()
{
shared_lock<shared_mutex> lock(session_.signals_mutex());
- unordered_set< shared_ptr<view::Signal> > sigs(session_.signals());
+ const unordered_set< shared_ptr<view::Signal> > &sigs(session_.signals());
// Add enabled channels to the data set
set< shared_ptr<data::SignalData> > data_set;