[R-SIG-Finance] [R-sig-finance] Fwd: Question on multiple sessions...

[Daniel Cegielka]

Jeff Ryan pisze:

> 
> R is single threaded.  The approach I initially envisioned did involve some
> sort of dual R-process, where communication was via a file or sockets.  This
> obviously wasn't ideal, but seemed workable.
> 
> Turns out that with sockets, *blocking* sockets in R are the only
> reliable/efficient cross-platform mechanism to communicate that I have found
> while keeping everything in R.  This causes some interesting problems if you
> are waiting for messages from another process, and those messages are
> irregular in time.  Essentially you are just shifting the issue from one
> single-threaded process into two.  Same problems persist.
> 

Hi Jeff ;)

Twisted (python framework) include non-blocking function...
It can be ported to R.

http://twistedmatrix.com/trac/wiki/FrequentlyAskedQuestions#HowdoIuseDeferredstomakemyblockingcodenon-blocking


daniel