Hi all,
first : Axel - thanks a lot for your help !
> Translated to existing root methods it could look something like this:
> double EVA::customValue(void) {
> double result = gROOT->ProcessLineFast(
> Form("/where/script/resides/script.cc(%p);",
> &stlVectorWithDoubles));
> return result;
> }
>
> Your script will have to look like this:
> double script(std::vector<double>* pvec){
> ...
> }
>From what I can see, gROOT is a global variable set in TROOT.cxx
as a pointer to an instance of TROOT. My intention is to use root
as an extension language both in a multithreaded environment and
in MPI programs. While having more than one root session running
isn't a problem in the MPI case (each is constrained to a separate MPI
application), the same does not apply to the POSIX Thread case.
I'm not too sure whether root uses gROOT anywhere internally, in which
case having more than one instance of TROOT in my application would
break things. If gROOT is only for the benefit of root users, I could simply
"forbid" users to use it and instead e.g. provide them with an argument
for script.cc that contains a pointer to my TROOT instance. Are there better
ways of doing this and is anybody using multiple instances of root in a
multithreaded environment ?
Thanks and have a nice day,
Ruediger
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