BUG: Unload package does not unload DLL

[HenrikBengtsson]

Issue

In a fresh R session, we get:

> loadNamespace("affxparser")
> names(getLoadedDLLs())
[1] "base"       "methods"    "utils"      "grDevices"  "graphics"
[6] "stats"      "base64"     "affxparser"
> unloadNamespace("affxparser")
> loadedNamespaces()
[1] "graphics"  "base64"    "utils"     "grDevices" "stats"     "datasets"
[7] "methods"   "base"
> names(getLoadedDLLs())
[1] "base"       "methods"    "utils"      "grDevices"  "graphics"
[6] "stats"      "base64"     "affxparser"

Note how the affxparser DLL is still there.

Solution

Add

.onUnload <- function(libpath) {
  library.dynam.unload("affxparser", libpath)
}

to the package.

See also

R devel thread [Rd] Is it possible to increase MAX_NUM_DLLS in future R releases?, May 2, 2016.

[HenrikBengtsson]

Hmm... this seems to have been fixed in affxparser 1.43.1 via a Bioc SVN update by myself:

Commit id: a07eb97

    ROBUSTNESS: Did not seem to be needed, but package is now a good citizen   and do library.dynlib.unload() when unloaded. CLEANUP: Now using requireNamespace() instead of require().

Committed by: hb
Author Name: hb
Commit date: 2015-01-18 10:01:38 -0800
Author date: 2015-01-18 10:01:38 -0800

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/affxparser@98443 bc3139a8-67e5-0310-9ffc-ced21a209358