[Fontconfig] Application startup performance

[Raimund Steger]

On Thu, 14 Jan 2016 22:39:37 -0800
Keith Packard <keithp at keithp.com> wrote:

> Akira TAGOH <akira at tagoh.org> writes:
> 
> > As I mentioned in other mail, it was needed to avoid the races. to get
> > rid of it completely, the logic of the cache updates may needs to be
> > changed because keeping the directory information into the memory a
> > long time causes that issue easily when recursively traversing
> > directories.
> 
> As long as the timestamp written to the cache is the directory change
> time when the scanning starts, then applications starting after that
> will re-scan the directory if it was changed while the first application
> was scanning. I guess I don't see how this (which is what I think the
> code does) could cause a race?

Wouldn't it need to be the timestamp that was used in the very first call to FcCacheTimeValid? But it's not implemented like that, is it?



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