#include "dcpomatic_time.h"
#include "player_text.h"
#include <boost/noncopyable.hpp>
+#include <boost/thread/mutex.hpp>
#include <list>
#include <map>
void add (DCPTimePeriod period, std::list<PlayerText>& pc, std::list<Period> p) const;
+ mutable boost::mutex _mutex;
Map _data;
};