No, I don't know of a way to do that, and I'd be surprised if there was an easy one (ie, one that I have remotely the low-level knowledge to implement). But someone who knows more about the system level might have better ideas.
Sam On Thu Dec 04 2014 at 12:01:30 PM Robby Findler <ro...@eecs.northwestern.edu> wrote: > Do you know how to get the racket-level stack at the point strace > reports a call to open() or write()? > > (I do see this bug occasionally but not reproducibly so setting up > something on my machine with more debugging output seems likely to be > productive.) > > Robby > > > On Thu, Dec 4, 2014 at 10:34 AM, Sam Tobin-Hochstadt > <sa...@cs.indiana.edu> wrote: > > > > > > On Thu Dec 04 2014 at 9:36:08 AM Robby Findler < > ro...@eecs.northwestern.edu> > > wrote: > >> > >> On Wed, Dec 3, 2014 at 10:30 PM, Prabhakar Ragde <plra...@uwaterloo.ca> > >> wrote: > >> > I'm currently using Racket 6.1. For some time now, when editing > Scribble > >> > files in DrRacket, I've been getting "file has changed on disk" > messages > >> > when trying to save or render - not consistently, just every so often. > >> > These > >> > are files I am not editing in anything other than DrRacket. I click > >> > "ignore" > >> > and everything works fine, but it is annoying. > >> > >> This is definitely a bug somewhere and I've had not a lot of luck > >> tracking it down. > >> > >> > >> I guess that what's happening is something is actually changing the > >> file on the disk (perhaps DrRacket itself) and it shouldn't. > >> > >> So if you can figure out what feature of DrRacket is making this > >> happen or verify that the file is actually not changing on the disk, > >> either of those would be helpful. > > > > > > Here's a thought on tracking it down: > > > > * Run DrRacket under strace, looking at the calls to `open()` and > `write()`. > > > > * Add to relevant places in DrRacket something like this: > > (access string F_OK) > > > > where `access` is an FFI call to the C library access function, and F_OK > is > > the appropriate constant. Then those messages will appear in the strace > > output, so you can see what DrRacket is doing right around the time it > opens > > or writes to the relevant file. > > > > I got this trick from here: > > https://people.gnome.org/~federico/news-2006-03.html#09 where it's used > to > > plot timelines (also cool) but it might be useful for debugging in this > > case. > > > > Sam >
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