[PATCH 2 of 3] dirstate: add getfstime() to get current time to filesystem resolution

[Greg Ward]

On 15 March 2011, Matt Mackall said:
> On Tue, 2011-03-15 at 21:39 -0400, Greg Ward wrote:
> > # HG changeset patch
> > # User Greg Ward <greg at gerg.ca>
> > # Date 1300238571 14400
> > # Node ID a32697a387d0ff0b7327cb993b700c1eb0310326
> > # Parent  c5fa123f60a63af19057e873106c532ee2c553fa
> > dirstate: add getfstime() to get current time to filesystem resolution.
> > 
> > Based on code already in write(). Will be needed by
> > localrepository.commit() to call dirstate.maybelookup().
> 
> And this tempfile is needed because we don't have a handy file around
> that we're already writing to?

Correct.  dirstate.write() does, of course, which is why maybelookup()
takes 'now' as an arg.  But localrepository.commit() does not
necessarily.

I suspect your suggestion to move most of this into dirstate would
maybe getfstime() irrelevant, or at least private.

No, I'm not particularly thrilled with the overhead of creating a file
just to figure out the current time.  But 1) I couldn't think of a
better way, and 2) as the patch series stands, it only happens when we
do multiple commits in the same process, which is an uncommon case.

        Greg