QSharedMemory: how to use

3 method to process Inter-Process-Communacation (IPC)

1 shared memory

2 IPC

3 QProcess

To method 1:

      When using shared memory, you'd better notice that each shared memory will always exist till all process attached been detached.

To method 2:

      Usually you may use ZMQ as a messge queue

To method 3:

      Not sure of the method