Question

So, I’m writing a plugin for a program, which requires that two lots of data are passed to it. It needs to store that data in-between calls.

so, in psuedo-code:

MainFunction()
{
    GenerateData1()
    GenerateData2()
}

GenerateData1()
{
    PassDataToDLL() //(DLL Stores data)
}

GenerateData2()
{
    PassDataToDLL() //(DLL operates on both sets of data, returns results via pointer)
    OutputResults()
}

Interestingly, if I modify the above such that after passing data to the dll, the function GenerateData1 calls GenerateData2 itself, then it works!

Am I trying to acheive something that can’t be done, or is there a technique that could help?

Answer 1

you can do

class SharedData
{
      //Store all data in this class
};

std::shared_ptr<ShareData> pSharedData = std::make_shared<SharedData>();

You can pass pSharedData around dlls and it will automatically be deleted when nobody is referencing it.