RFR 7147666 : High lock time for com.sun.org.apache.xerces.internal.impl.dv.DTDDVFactory.getInstance()

[Andrew Hughes]

----- Original Message -----
> Hi all,
> 
> This is a low risk, proven patch made in Xerces back in 2007 [1],
> removing unnecessary "synchronization" in DTDDVFactory.  As reported
> in
> 7147666, this patch improves performance in one of the xml test.
> 
> Webrev : http://cr.openjdk.java.net/~joehw/7u4/cr7147666/webrev/
> 
> [1] http://svn.apache.org/viewvc?view=revision&revision=558581
> 
> Please review.
> 
> Thanks,
> Joe
> 
> 

Seems like an obvious fix to me.  The classname is initialised as part
of the static initialisation of the class and doesn't change.  There's
no need to lock the class to create instances AFAICS.

Were the whitespace changes in this webrev deliberate?

Thanks,
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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