parallel processing - Shared memory C++ and Win API 32 with custom class -


are there samples getting custom class including large arrays properties in shared memory? need read/write access different threads in same process. size of class instance unknown @ compilation time. openmp solutions not allowed in case, win 32 api or native c++ features.

you not need shared memory this. memory in 1 c++ process implicitly shared , accessible threads, far know address.

what need synchronization threads access objects in proper order (without race condition). objects should implement so-called monitor pattern.

in c++ manually this

  • put (win32 api) mutex member of object
  • lock mutex in beginning of every method
  • unlock @ method exit. it's better use locker object on stack deal exceptions.

(in languages declare methods or objects synchronized, in c++ manually)

alternatively use higher level parallel pattern, 'readers/writers'. prefer message passing


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