[webkit-dev] Font cache cleaning

[Frederic Marmond]

Hi people,

I just wonder how to clear the font cache, arbitrary.
For example, when leaving a site, clear all cached font data, to start loading 
the new page in a 'clean' environment.

I know it may slow down things :)  old memory vs speed debate...

I tried to call the FontCache::invalidate(); in my 
WebFrameLoaderClient::postProgressFinishedNotification(), but it doesn't do 
anything in my testcase.

I use valgrind to see what goes on.

my testcase is very simple:
first.html:
<span style="font-family: arial;">1234512345</span>
<a href="second.html">2</a>
second.html:
<span style="font-family: verdana;">a</span>

If I load first.html and then the second.html by clicking the link, then exit, 
I would expect memory be less used than if I only load first.html and exit.
That's not the case, arial font datas are not cleared despite my invalidate() 
call.

I'm a bit lost in the Font Cache, is there any guru that may kindly point me 
where to look?
I tried to modify cTargetInactiveFontData and related parameters, without 
success, I can't manage to limit the font cache size... it grows and grows :(

Thanks in advance,
best regards

Fred
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