Re: [Rd] dyn.load (PR#9364)

From: stefano iacus <stefano.iacus_at_unimi.it>
Date: Wed 15 Nov 2006 - 15:11:16 GMT

I'll test your script.
Simon also made the same remark. Maybe in 10.4 this problem is solved.

But apparently, if I load a package and then try to detach it, R still keeps open the .so file for that package. Is this expected for a successful unload (given that I never had experience of a successful unload I can't tell)? (I'm using ppc)

stefano

On 16/nov/06, at 00:07, Duncan Temple Lang wrote:

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> I was just testing this myself on various machines.
> And it behaves on Linux, Windows and also on
> my Intel Mac (OS X 10.4.8).
>
> Stefano, is this restriction on OS X still in effect?
> (Unfortunately I can't test this on any of my Power PC macs
> just at the moment. Just building R-2.4-0 one one of them.)
>
> There is test code available at
> www.omegahat.org/Misc/Rdynunload.tar.gz
>
> The script run.R does the builds and load and unloads
> and runs the entire test. Without a programmatic test
> it is easy to test the wrong thing.
>
> D.
>
> stefano iacus wrote:
>> In OS X you cannot "unload" dynamically linked code. This is a known
>> "feature" of OS X :(
>> This is not an R bug.
>>
>> stefano
>>
>> On 15/nov/06, at 15:27, tuke@senet.com.au wrote:
>>
>>
>>> Full_Name: Jonathan Tuke
>>> Version: 2.4.0
>>> OS: Mac OS X 10.4.8
>>> Submission from: (NULL) (203.173.46.189)
>>>
>>>
>>> I am writing C code to implement in R. I am using R CMD SHLIB and
>>> then
>>> dyn.load("file.so"). The function I then call with .C("function").
>>> Since I
>>> installed the latest R version, I have found that if I alter my C
>>> code and
>>> recompile, then use dyn.load("file.so"), the function in R is not
>>> updated but
>>> remains as the previous code. I have tried dyn.unload, but when I
>>> use dyn.load()
>>> the initially loaded code is used. The only way to load the updated
>>> c code is to
>>> quit R and then reopen.
>>>
>>> Thanks,
>>> Jono
>>>
>>> ______________________________________________
>>> R-devel@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>
>>
>>
>> ______________________________________________
>> R-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>
> - --
> Duncan Temple Lang duncan@wald.ucdavis.edu
> Department of Statistics work: (530) 752-4782
> 4210 Mathematical Sciences Building fax: (530) 752-7099
> One Shields Ave.
> University of California at Davis
> Davis,
> CA 95616,
> USA
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