Dennis Fisher wrote:
Colleagues,
I have encountered the following situation in R (2.9.0) with Windows XP.
I have an application that calls Rterm.exe. In certain situations, the
application terminates but fails to close R. Then, the next time that
the application runs, there are replicated copies of R running - this
slows the system. One solution would be to kill any open versions of
Rterm.exe each time the application terminates. But, that would affect
other legitimate copies of Rterm.
The solution to that problem is simple. Instead of running Rterm.exe, I
copy Rterm.exe to Rterm-nnnnn.exe, execute that version, then when the
job is complete, I can specifically terminate that version using
Window's taskkill command.
Unfortunately, I just encountered a new problem. If the R folder has
restricted privileges, it appears that I cannot copy Rterm.exe to the
same folder. So, I attempted a work-around, i.e., move the copy to
another folder (e.g., Desktop). However, this does not work - when the
copy is in another location, it opens, then closes immediately.
So, my question is: is there some means to call Rterm.exe (I assume that
the same would apply to R.exe) from a folder other the bin?
It does not need to be called bin, but must be in the same level of the
directory structure within the main R folder.
I guess you could better record the PID of your R session (Sys.getpid(),
say in some file) and delete that file on graceful exit of R. Otherwise
you can kill the process with the old PID later on.
Uwe Ligges
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-415-564-2220
www.PLessThan.com
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