C++ stream to memory

Question

Hi, how can I create std::ostream and std::istream objects to point to a piece of memory I allocated and manage (I don't want the stream to free my memory).

I was looking at using rdbuf()->pubsetbuf() to modify one of the other streams - say sstringstream. However I think streambuf used by stringstream will free the buffer afterwards?

Basically I'm trying to serialize some things to shared memory.

Thanks.

Answer 1

Take a look at the bufferstream class in the Boost.Interprocess library:

The bufferstream classes offer iostream interface with direct formatting in a fixed size memory buffer with protection against buffer overflows.