Re: setproctitle() no longer used?

On Wed, 10 May 2000, Bruce Momjian wrote:

> > On Wed, 10 May 2000, Bruce Momjian wrote:
> > 
> > > > > So if you use -lutil, the argv[0] trick works, and if you don't, it
> > > > > doesn't?  If so, we can get that into the FreeBSD template.
> > > > 
> > > > 'splain the "argv[0] trick" briefly.
> > > 
> > > It is a nifty BSD one.  If you assign argv[0] in the program to a
> > > string, it shows in ps.
> > > 
> > >     argv[0] = "new ps string";
> > > 
> > > The Linux method is:
> > > 
> > >     strcpy(argv[0], "new ps string");
> > > 
> > > In the second case, you are actually writing into the environment area
> > > use to store args.  Not real great, but it works on Linux.
> > 
> > This does not:
> > 
> > #include <stdio.h>
> > #include <sys/types.h>
> > #include <libutil.h>
> > 
> > 
> > int main(int numargs, char *argv[])
> > {
> > int ii;
> > 
> >         argv[0] = "Postgres Power!";
> > 
> >         for(ii=0;ii<100;ii++) sleep(1);
> > 
> > return 0;
> > }
> > 
> > $ cc test.c -lutil -o test
> > $ ./test
> > 
> > making it strcpy(argv[0],"Postgres Power!");  didn't either.
> > 
> > But:
> > 
> > making it:  setproctitle("Postgres Power!");  gives this:
> > 
> > 34273  p3  S      0:00.00 test: Postgres Power! (test)
> 
> Well, that's interesting.  Our issue with setproctitle is how fast it
> is.  Every query changes its proctitle, so it has to be fast.  Tom want
> to have setproctitle on backend startup, then use the fast method on
> platforms that support it.
> 
> Does the existing postgres ps title code work on your Linux?

I'm assuming you're not asking me..

Vince.
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