[Rd] Object are not destroy while using error (Rf_error)
Dear all,
I try to understand why on my computer I do not clear all data with this
code:
#include
static int count = 0;
class A {
public:
A(){ printf("c %d\n", count);
count++; }
~A(){count--;
printf("d %d\n", count); }
};
extern "C" {
void testAL(){
A a;
{
A b;
}
error("does not write [d 0]");
}
}
To run with R: I build gcc -shared -I/opt/R-202301/lib/R/include/
myError.cpp -o myError.so
then in R: dyn.load("myError.so")
.C("testAL")
This writes c0, c1, d1 but not d0.
If I comment line "error", I does write latest d0.
How could I get all my objects destroy while sending en error message to R ?
Regards,
Antoine Lucas.
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Re: [Rd] Object are not destroy while using error (Rf_error)
Antoine,
I think there are few things going on here. One is that actual _R_ objects
may only get destroyed when gc() gets called. Which we applications writer
do not control. Another thing that may have an effect is the use of .C()
which we all more or less moved away from. Anyway, if we make your example a
proper C++ one with proper C++ scope (by trivial Rcpp wrapping for ease, but
that should not be a requirement) we see the four message you desire:
Code
#include
static int count = 0;
class A {
public:
A(){ printf("c %d\n", count);
count++; }
~A(){count--;
printf("d %d\n", count); }
};
// [[Rcpp::export]]
void testAL(){
A a;
{
A b;
}
Rcpp::stop("does not write [d 0]");
}
/*** R
testAL()
*/
Output
> Rcpp::sourceCpp("/tmp/ctorDemo.cpp")
> testAL()
c 0
c 1
d 1
d 0
Error in eval(ei, envir) : does not write [d 0]
>
Hope this helps, Dirk
--
dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
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Re: [Rd] about RGui HighDPI awareness on windows
Continually working on this, System DPI awareness implemented improved and almost finished. Now the modify includes: Window, Dialogs and Toolbar implemented use graphapp. which related to Multiple places in the R windows front end and R base package and modules. Now most of them modified to DPI awareness(some of them, surprisingly DPI awareness ready, do not need to mod,) . I test on two PCS168-dpi and 192 dpi, RGUI windows(include console, editor, pagers), dialogs (include download, repo related , preference), and most important, plotting Windows, All of them work smoothly on my test PCS. The patch url is https://github.com/armgong/misc-r-patch/blob/main/dpi-c-code.diff and two test picture of my PCS are also in the repo. Looking forward to any feedback or feedback from you. Best regards, Yu Gong From: R-devel on behalf of yu gong Sent: Friday, January 20, 2023 17:23 To: r-devel@r-project.org Subject: [Rd] about RGui HighDPI awareness on windows 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 if you interested in this ,please read or try the patch. Looking forward to hear your thoughts about this patch. Best regards, Yu Gong [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
