Displaying 2 results from an estimated 2 matches for "55aa7440d420".
2020 Jan 09
6
Get memory address of an R data frame
Hello,
I would like for my C function to be able to manipulate some values stored in an R data frame.
To achieve this, a need the (real) memory address where the R data frame stores its data (hopefully in a contiguous way). Then, from R, I call the C function and passing this memory address as a parameter.
The question: how can we get the memory address of the R data frame?
Thank you!
L.
2020 Jan 09
0
Get memory address of an R data frame
...[1] <- 2Ltracemem[0x55aa743e0bc0 -> 0x55aa778f6ad0]:
tracemem[0x55aa778f6ad0 -> 0x55aa778f6868]: [<-.data.frame [<-
tracemem[0x55aa778f6868 -> 0x55aa778f5b48]: [<-.data.frame [<-
> .Internal(inspect(x)) @55aa743e0bc0 19 VECSXP g0c1
[OBJ,MARK,NAM(7),TR,ATT] (len=1, tl=0) @55aa7440d420 13 INTSXP g0c0
[MARK,NAM(7)] 1 : 10 (compact) ATTRIB: @55aa743f9ea0 02 LISTSXP g0c0 [MARK]
TAG: @55aa72ac98a0 01 SYMSXP g0c0 [MARK,NAM(7),LCK,gp=0x6000] "names" (has
value) @55aa743e0fb0 16 STRSXP g0c1 [MARK,NAM(7)] (len=1, tl=0)
@55aa72be1c70 09 CHARSXP g0c1 [MARK,gp=0x61] [ASCII] [cache...