[Rcpp-devel] Rcpp & Multithreading

[Jaiganesh Balasubramanian]

Hi Dirk,

Thanks for your reply.

Well, we already do that when RInside sets itself up:
>
>    #ifdef CSTACK_DEFNS
>    R_CStackLimit = (uintptr_t)-1;      // Don't do any stack checking, see
> R Exts, '8.1.5 Threading issues'
>    #endif
>

Yes, i noticed this, and added the MACRO definition in my code as
#define CSTACK_DEFNS 1


What I would do now is to create a sample program with two threads, then

> initialize R in one and the query from the other. If that already tickles
> the
> issue then you are out of luck, and R has to stay in one thread.  You may
> be
> able to use inter-thread communication to 'request' data from the
> R-containing thread by carefully brokering the requests.
>

This is exactly what my program is doing right now, and it does not work.

If it works, it would be awesome, because, we could then perform multi-core
programming with Rcpp/RInside in a seamless fashion with any native
threading mechanism like Pthreads.

Thanks,
Jai
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