Charm++ parallel programming system

[Jozsef Bakosi <jbakosi AT gmail.com>]

Hi folks,

How can I create a callback to a driver whose type is a template argument?

In essence, I want to add a line CkReduction(...) in my class that is templated on the type to which I want to call back.

I see that CkReductionTarget is a macro:

CkReductionTarget(me, method) CkIndex_##me::redn_wrapper_##method(NULL)

which creates "CkIndex_<DRIVER>" from the first argument '<DRIVER>'. This requires hardcoding the specialized <DRIVER>'s name to the call, which will fail for a different template argument. I cannot pass the template argument to the macro since preprocessing happens earlier than type resolution and the string of the template argument will be substituted instead of the type specialized.

I could use template metaprogramming to get the CkIndex_<DRIVER> type from type <DRIVER> at compile time and so I could generate what the macro generates, but I don't know what "redn_wrapper_" stands for.

Does someone have an idea how to resolve this?

Thanks,

Jozsef