[R-pkg-devel] scripting R through lldb
Hello,
I am debugging a package that contains some compiled C code. The C code uses R
random number generator so I cannot (or have not figured out how to) debug it
without running it through R. What I do is to type the following in the
terminal:
R --debugger=lldb
then in the lldb prompt
r
and within R
source("~/Desktop/test.R”)
which is the file calling the C library. When the library crashes I can
navigate the C memory to see where is the problem.
My question is whether there is a way to have this in single line or script to
run from the terminal. I have looked on stackoverflow but could not find.
Many thanks
Guillaume
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Re: [R-pkg-devel] scripting R through lldb
Hi Guillaume,
I have a script that does this (for OS X) here, taking advantage of
the new '--batch' argument to lldb:
https://github.com/kevinushey/etc/blob/master/lang/r/mac/bin/r-lldb
Note that, on recent versions of OS X due to system integrity
protection, this may not work with the system lldb, as it appears
there are restrictions on how certain environment variables, e.g.
DYLD_FALLBACK_LIBRARY_PATH, can be set for system executables. (If you
are indeed on OS X, you can try building your own version of lldb --
see e.g.
https://github.com/kevinushey/etc/blob/master/platform/mac/install-llvm.sh
for that)
In the end, you should be able to use this script as e.g.
r-lldb -f test.R
and this will launch lldb, set R as the target process, with '-f
test.R' passed to the R executable.
Depending on your OS / configuration, you might need to tweak the
script, but it will hopefully either 'work out of the box' or at least
serve as a starting point for your version.
Best,
Kevin
On Wed, Jun 15, 2016 at 12:39 PM, Guillaume Chapron
wrote:
> Hello,
>
> I am debugging a package that contains some compiled C code. The C code uses
> R random number generator so I cannot (or have not figured out how to) debug
> it without running it through R. What I do is to type the following in the
> terminal:
>
> R --debugger=lldb
>
> then in the lldb prompt
>
> r
>
> and within R
>
> source("~/Desktop/test.R”)
>
> which is the file calling the C library. When the library crashes I can
> navigate the C memory to see where is the problem.
>
> My question is whether there is a way to have this in single line or script
> to run from the terminal. I have looked on stackoverflow but could not find.
>
> Many thanks
>
> Guillaume
> __
> R-package-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-package-devel
__
R-package-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-package-devel
Re: [R-pkg-devel] scripting R through lldb
Fantastic, it works perfectly, many thanks!
Guillaume
> On 15 Jun 2016, at 21:49, Kevin Ushey wrote:
>
> Hi Guillaume,
>
> I have a script that does this (for OS X) here, taking advantage of
> the new '--batch' argument to lldb:
>
>https://github.com/kevinushey/etc/blob/master/lang/r/mac/bin/r-lldb
>
> Note that, on recent versions of OS X due to system integrity
> protection, this may not work with the system lldb, as it appears
> there are restrictions on how certain environment variables, e.g.
> DYLD_FALLBACK_LIBRARY_PATH, can be set for system executables. (If you
> are indeed on OS X, you can try building your own version of lldb --
> see e.g.
> https://github.com/kevinushey/etc/blob/master/platform/mac/install-llvm.sh
> for that)
>
> In the end, you should be able to use this script as e.g.
>
>r-lldb -f test.R
>
> and this will launch lldb, set R as the target process, with '-f
> test.R' passed to the R executable.
>
> Depending on your OS / configuration, you might need to tweak the
> script, but it will hopefully either 'work out of the box' or at least
> serve as a starting point for your version.
>
> Best,
> Kevin
>
> On Wed, Jun 15, 2016 at 12:39 PM, Guillaume Chapron
> wrote:
>> Hello,
>>
>> I am debugging a package that contains some compiled C code. The C code uses
>> R random number generator so I cannot (or have not figured out how to) debug
>> it without running it through R. What I do is to type the following in the
>> terminal:
>>
>> R --debugger=lldb
>>
>> then in the lldb prompt
>>
>> r
>>
>> and within R
>>
>> source("~/Desktop/test.R”)
>>
>> which is the file calling the C library. When the library crashes I can
>> navigate the C memory to see where is the problem.
>>
>> My question is whether there is a way to have this in single line or script
>> to run from the terminal. I have looked on stackoverflow but could not find.
>>
>> Many thanks
>>
>> Guillaume
>> __
>> R-package-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-package-devel
__
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