refactor pub/sub center.

lichao

2021-04-02 0bc72d004b08b6cac005931787f43c68dace7685

 src/defs.h

@@ -21,6 +21,7 @@

#include <boost/uuid/uuid.hpp>
#include <boost/uuid/uuid_generators.hpp>
#include <string>

typedef boost::uuids::uuid MQId;

@@ -34,6 +35,7 @@
} // namespace bhome_shm

bhome_shm::SharedMemory &BHomeShm();
typedef std::string Topic;

//TODO center can check shm for previous crash.