[OpenJDK 2D-Dev]  request for review: 7181199: [macosx] Startup is much slower in headless mode for apps using Fonts
jennifer.godinez at oracle.com
Mon Sep 10 18:29:50 UTC 2012
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/
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