Greg Hendershott wrote at 03/26/2011 12:14 PM:
$ raco exe -o foo foo.rkt
$ ./foo &
$ ps #shows it as "racket" not as "foo".
$ top #shows it as "racket" not as "foo".
Is there way I can make it show up as "foo"?
You can often do this in C on Unix variants by mutating the string
buffers pointed to by "argv" argument as passed to the "main" function.
To do this for executables created in the manner above, I suspect that
someone would have to modify the C code for Racket, but I have not
verified this. (I started to look at the 5.0.2 code just now, and
didn't immediately see an obvious way without modifying the C code, but
I have to run to something now, so you might see a way if you read
through the code.)
Use this feature with discretion, since the effect can be confusing to
people trying to debug. (Some daemons have been known to abuse this
feature to show application-specific status, preventing you from seeing
the original command line arguments. A colleague once hacked an old
Unix game to show up in the process table as "vi resume" on time-sharing
systems, back when employers were more motivated to keep employees
happy.) And exercise the usual system programming caution, since you
don't want to stomp on the wrong memory here, nor corrupt the info that
"ps" and other tools will be looking at.
In the case of the original "raco exe" question, perhaps this is
something that Racket should be changed to do by default? I have no
opinion on that.
--
http://www.neilvandyke.org/
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