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I am going to develop a DLL for an MFC Application, and suppose I have a singleton class in this DLL with some synchronization mechanism. And this DLL is used by other processes, namely EXEs. The question is: is this singleton created only once for all sharing processes or every process has its own singleton?
And How can I solve this multiple singleton problem?
I suppose you are talking about Windows. In that case every process has its own singleton. You could place it in shared memory and use named synchronization primitives to share singleton between processes.