[OpenJDK 2D-Dev] [8] request for review: 7181199: [macosx] Startup is much slower in headless mode for apps using Fonts

[Phil Race]

I see. Approved.

-phil.

On 9/8/2012 4:30 AM, Andrew Brygin wrote:
> Hello Phil, and Jennifer,
>
>  could you please review a fix for 7181199?
>
>  The observed difference in the consumed time is caused by
>  SunFontManager::loadFonts(): in case of headless, it takes
>  much more time to complete. In fact all this time is spent
>  in registerFontsOnPath() (about 4000ms in headless mode
>  instead of 0ms in normal mode).
>
>  This method takes significant time in headless mode, just
>  because it handles font path "/Library/Fonts" which was
>  returned by getPlatformFontPath(), whereas  in case of
>  normal mode, the returned font path is empty.
>
>  The method  getPlatformFontPath() delegates actual work to
>  getFontDirs() which is overloaded in CFontManager. In case
>  of CFontManager, this delegate checks whether default toolkit
>  is an instance of LWCToolkit, and returns empty path in that
>  case. Otherwise, it returns "/Library/Fonts" path, in assumption
>  that X11 toolkit is used.
>
>  Obviously, this check does not work in case of HeadlessToolkit,
>  where the underlying toolkit instance need to be checked.
>
>  Please note that in jdk8 this issue is masqueraded by a problem
>  reported in CR 7194935, which prevents a running applications in
>  headless mode.
>
>  Please take a look.
>
> Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7181199
> Webrev: http://cr.openjdk.java.net/~bae/7181199/8/webrev.00/
>
> Thanks,
> Andrew