center alloc node queue; node just find them.

lichao

2021-05-08 36e6a35a886252516f168b90f7a9a7c1c5177312

 src/defs.cpp

@@ -50,7 +50,7 @@
   MsgI::BindShm(shm);
   typedef std::atomic<MQId> IdSrc;
   IdSrc *psrc = shm.FindOrCreate<IdSrc>("shmqIdSrc0", 100000);
   return ShmMsgQueue::SetData(*psrc);
   return psrc && ShmMsgQueue::SetData(*psrc);
}

void SetLastError(const int ec, const std::string &msg)