[gridley2]

Hi all,


I am working on a solver where I have some structs (just a few pieces of data, about 5 integers and a handful of booleans) that sometimes need to be sent across processor boundaries. It's being used to track whether cells are in the vicinity of the liquid/gas interface in VOF calculations.



Can anyone point me to an example of sending a new struct or class using Pstreams? From what I have gathered, you just need to defined a operator>> and operator<< for the IPStream and OPstreams, but I seem to have made a mistake in doing this.


In particular, I'm confused about the order that stuff in the struct should be packed and unpacked into the Pstream. I can provide an example of what my current code looks like if needed. The specific error which arises is a segfault.

[gridley2]

For anyone else who encounters an issue with this, the solution is to make something look like this:

struct ProcessorRequest
{
    label swagLevel;
    label originalProcessor;
    label neighborProcessor;
    Pair<bool> result;
    bool done;
};

Ostream& operator<<(Ostream& os, const ProcessorRequest& pr)
{
    os << pr.swagLevel;
     << pr.originalProcessor;
     << pr.neighborProcessor;
     << pr.result;
     << pr.done;
    return os;
}

Istream& operator>>(Istream& is, ProcessorRequest& me)
{
    is >> me.swagLevel 

        >> me.originalProcessor 

        >> me.neighborProcessor
        >> me.depth
        >> me.result
        >> me.done;
    return is;

 }

Then it will go through Pstreams just like any other OpenFOAM primitive.