I have a perl interpreter running in parallel with my C++ program. The C++ program passes code to the perl program and then receives the results. The communication is done through named pipes.

Passing the standard data such as ints, longs, doubles and strings is easy. What I can't figure out is how to receive and then send to the Perl program references.

For example, my perl code returns a hash reference. I tried having my perl program send it to my C++ program as a string, and it comes as HASH(0xXXXXX). When the C++ sends a string SV with that value back to the perl, it doesn't work. I tried having the Perl program send the SV as a long. When my C++ program sends it back to the perl program, I also ran SvRV_on to mark that the data is an RV. That didn't work either. In short, knowing that a particular RV can be represented as HASH(0xXXXXX), how can I create a new SV to become an RV pointing to that hash??? Greg

In reply to How to extract/set RV information? by gszczesz

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