Hi,
it seems that the package hooks .onLoad and its C++ pendant
R_unload_mylib are actually not called when R quits, but only when
explicitly calling detach('package:mylib', unload = TRUE).
Maybe this is platform specific, I'm on Ubuntu 13.10 - R 3.0.2 (see below).
* is there a mechanism that a package can use to effectively do some
cleanup on standard exit, such as calling cleaning up routines of a
loaded third-party library? I tried .onDetach but it did not work
either.
* by curiosity, in what kind of practical situation would a user
want to call detach(..., unload = TRUE)?
* is there a reason why the hooks are not called on quit?
Thank you.
Bests,
Renaud
###
> Sys.info()
sysname release
version
"Linux"
"3.11.0-12-generic" "#19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013"
nodename
machine login
"XXXXX"
"x86_64" "renaud"
user
effective_user
"renaud"
"renaud"
> sessionInfo()
R version 3.0.2 (2013-09-25)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
LC_MONETARY=en_US.UTF-8
[6] LC_MESSAGES=en_US.UTF-8 LC_PAPER=en_US.UTF-8 LC_NAME=C
LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
>
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