[R] Repeated use of dyn.load().
ruipbarradas at sapo.pt
Thu Mar 1 13:21:14 CET 2018
In such cases, with C code, I call dyn.unload before loading the
modified shared lib again.
I don't know if this changed recently, but it used to be needed or else
R wouldn't load the new lib. When I call dyn.unload followed by dyn.load
I never had problems.
(Or the other way around, call dyn.unload before modifying the C code.)
Hope this helps,
On 3/1/2018 8:52 AM, Rolf Turner wrote:
> I am working with a function "foo" that explicitly dynamically loads a
> shared object library or "DLL", doing something like dyn.load("bar.so").
> This is a debugging exercise so I make changes to the underlying
> Fortran code (yes, I acknowledge that I am a dinosaur) remake the DLL
> "bar.so" and then run foo again. This is all *without* quitting and
> restarting R. (I'm going to have to do this a few brazillion times, and
> I want the iterations to be as quick as possible.)
> This seems to work --- i.e. foo seems to obtain the latest version of
> bar.so. But have I just been lucky so far? (I have not experimented
> Am I running risks of leading myself down the garden path? Are there
> Traps for Young (or even Old) Players lurking about?
> I would appreciate Wise Counsel.
> Rolf Turner
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