[Geany-devel] editing big files can be too slow with tag reparsing - HTML

[Nick Treleaven]

On 26/09/2011 23:00, Colomban Wendling wrote:
> Le 26/09/2011 13:48, Nick Treleaven a écrit :
>> I'm reduced to using Windows. I guess the reason is the regex code that
>> is really old which is used for Windows builds.
>
> Maybe yeah, but I find it a little weird you see *so much* slowness...
>
> For comparison, on my machine [1] parsing and updating the list takes
> less than 60ms for geany.html.

Just to be sure, are you seeing the 'built-in regex' debug message:

12:42:07: (null) INFO		: GTK 2.22.0, GLib 2.26.0, built-in regex

>> It might help to update
>> it from CTags (we had a patch from Jiri Techet but it didn't look like
>> it would build on Windows, i.e. wasn't from CTags).
>
> Maybe we could use GRegex now we have a GLib recent enough?
>
> Anyway tagamanger/regex.c looks like a few glibc source file
> concatenated with a 0xff separator, I'd then guess any POSIX RE
> implementation (e.g. today's glibc's one) would do, wouldn't it?

That's probably what Jiri did, but I noticed CTags had some 
modifications to build on Windows. Perhaps glibc would work, but I think 
taking it from ctags is safer.

I don't know if GRegex would work, CTags parsers may use non-POSIX 
features - are \w \s part of POSIX?

> OK... with a fresh configdir?

Just tried that, same problem. Task manager showed I still had about 
230MB memory free whilst having the problem - the freeze caused 100% CPU 
as expected.