similar to: Finalization and external pointers

Hi all, I found that the finalizer of the externalPtr is not called when R is quitting. However, manually calling GC() works fine. This behavior is observed on devel R 2020-04-02 r78142 on Win and R 3.6.3 on Ubuntu. I make a reproducible package here: https://github.com/Jiefei-Wang/example Here is the detail of how to reproduce the problem, I create a temporary file in the package root path and

(Tried this query on r-help with no luck, maybe someone here can help?) I would like to call the 'RFinalizerEx' function that appears in Rinternals.h using ".Call". It worked for me in the past, but now I get an error message something like: 'call function name not in call table'. I'm using the 1.6.1 rpm from CRAN. Anyone know what's going on? Thanks. Tim --

Hi, I'm trying to write a function to return an R vector which points directly to a contiguous subset of another vector, without taking a copy. Since SEXPREC is a header followed by the data, rather than the header plus a pointer to the data, I'm not sure what I'm trying to do is possible. Is there a way of doing this? Similar in spirit to how the R assignment "x=y" does

Why does the following eval() call on sys.on.exit() not return what I expect/evaluate in the proper environment? foo <- function() { cat("foo()...\n"); on.exit( message("exiting") ) cat("sys.on.exit():\n") res <- sys.on.exit() print(res) cat("eval(sys.on.exit()):\n") expr <- quote(sys.on.exit()) print(expr) res <- eval(expr)

With tryCatch() it is possible to catch interrupts with tryCatch(). Then you can use a 'finally' statement to clean up, release resources etc. However, how can I "protect" against additional interrupts? This is a concern when the hold down Ctrl+C and generates a sequence of interrupts. Example: tryCatch({ cat("Press Ctrl+C...\n"); Sys.sleep(5); }, interrupt =

Hi all, I have a question about finalizers... I have a package that manages state for a few connections, and I'd like to ensure that these connections are 'cleanly' closed upon either (i) R quitting or (ii) an unloading of the package. So, in a pared-down example package with a single R file, it looks something like: ##### BEGIN PACKAGE CODE ##### .CONNS <- new.env(parent =

I see some code in R to attach finalizers to external pointer references (Register[C]Finalizer). Anyone have an example of how to code the finalizer? R_RegisterCFinalizer accepts a C function, but I can't see how to get it to operate on the pointer, since the pointer is not passed to the function when its called. RegisterFinalizer takes an R closure, but how is it called from R (tried

I'm trying to follow the example in the R for Windows FAQ on running gdb and am getting stuck because gdb tells me "Cannot access memory at address ...". Here's what my gdb session looks like (This one from a cygwin shell, but same results from plain Windows CMD shell): $ cd R-devel/src/gnuwin32 $ gdb ../../bin/Rgui.exe GNU gdb 5.2.1 Copyright 2002 Free Software Foundation,

libEMF (http://sourceforge.net/projects/libemf/) looks like it may be the solution to generating WMF/EMF files on Unix. It's a general-purpose (LGPL) library that implements the EMF API ... (I was originally going to write to the list to ask why small circles appear to be filled (in src/gnuwin32/graphapp/gdraw.c) by generating a series of rectangles rather than using some kind of

Another question "graphapp.h" in R1.1 defines number of plotting function. is there an example of how to use them? Thank. --------------------------- Vadim Kutsyy vadim at kutsyy.com http://www.kutsyy.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info",

Another question "graphapp.h" in R1.1 defines number of plotting function. is there an example of how to use them? Thank. --------------------------- Vadim Kutsyy vadim at kutsyy.com http://www.kutsyy.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info",

I have just made available on ftp://sirio.stat.unipd.it/pub/R a new version of R for MsWindows compiled with gcc-mingw32. Enclosed you can find the README. Since there are many news (with respect to my previous port, rw0613), please read it. guido ------------------------ README ---------------------------------------- rw0623b.zip is a binary distribution of R (based on the last

I have just made available on ftp://sirio.stat.unipd.it/pub/R a new version of R for MsWindows compiled with gcc-mingw32. Enclosed you can find the README. Since there are many news (with respect to my previous port, rw0613), please read it. guido ------------------------ README ---------------------------------------- rw0623b.zip is a binary distribution of R (based on the last

I have just made available on ftp://sirio.stat.unipd.it/pub/R a new version of R for MsWindows compiled with gcc-mingw32. Enclosed you can find the README. Since there are many news (with respect to my previous port, rw0613), please read it. guido ------------------------ README ---------------------------------------- rw0623b.zip is a binary distribution of R (based on the last

Dear all: Now RGui on windows no HighDPI awareness.try add HighDPI awareness to RGui in last two days. I write an initial POC(just for verify and only SystemDPI awareness partial implemented) , try to mod graphapp used in R to implemented DPI scaling. it seems works on my laptop , but need further test. So I post the patch https://github.com/armgong/misc-r-patch/blob/main/dpi-c-code.diff

On 4 September 2017 at 11:35, Suzen, Mehmet wrote: | It is not needed. There is a large community of developer using SparkR. | https://spark.apache.org/docs/latest/sparkr.html | It does exactly what you want. I hope you are not going to mail a sparkr commercial to this list every day. As the count is now at two, this may be an excellent good time to stop it. Dirk --

Hello, I was trying to build R from source on Windows XP. I installed software which are mentioned from the follow web page http://www.murdoch-sutherland.com/Rtools/ (Last accessed on Nov. 13th, 2006) . Unfortunately, I got error messages whenever I run 'make all recommended' without modifying 'MkRules' file. I have removed software and reinstalled them several times but I still

I have written a series of C modules that produce various custom (technical analysis) graphs when presented with a financial time series. The code was developed on the Win2K and so makes many now level function calls to the GDI etc, and is very tightly wedded to the Win2k windowing system. I notice however, that most of the graphing functionality in R (at least on the Windows OS) is handled

Dear R .Call() insiders, Can someone enlighten me how to properly finalize external pointers in C code (R-2.5.1 win)? What is the relation between R_ClearExternalPtr and the finalizer set in R_RegisterCFinalizer? I succeeded registering a finalizer that works when an R object containing an external pointer is garbage collected. However, I have some difficulties figuring out how to do that in an

I am calling a C (C++ really) function via the .C interface. Sometimes when things go wrong I want to return an error message. 1. R provides C functions error and warning which look about right. But exactly how does this exit, and in particular what happens with cleaning up, calling C++ destructors, and unwinding the stack? Will I get memory leaks? 2. Before I discovered those functions, I