RFR (S) 8232168: Fix non wide char canonicalization on Windows

[Langer, Christoph]

Hi,

I've picked up Ralf's patch and cleaned it up a little bit. But apart from some comment changes it should be the same as his original version. So, what happens is that the windows 'canonicalize" function will only delegate to 'wcanonicalize' from now on.  Furthermore,  'canonicalizeWithPrefix' along with some auxiliary stuff could be removed completely.

Can I please get a review for this, as I'm planning on doing further cleanup around canonicalization.

New webrev: http://cr.openjdk.java.net/~clanger/webrevs/8232168.0/

Thanks
Christoph

> -----Original Message-----
> From: hotspot-runtime-dev <hotspot-runtime-dev-
> bounces at openjdk.java.net> On Behalf Of Alan Bateman
> Sent: Freitag, 18. Oktober 2019 12:41
> To: Schmelter, Ralf <ralf.schmelter at sap.com>; David Holmes
> <david.holmes at oracle.com>; hotspot-runtime-dev at openjdk.java.net; Java
> Core Libs <core-libs-dev at openjdk.java.net>
> Subject: Re: RFR (S) 8232168: Fix non wide char canonicalization on Windows
> 
> On 16/10/2019 09:28, Schmelter, Ralf wrote:
> > Hi David,
> >
> > the canonicalize() method is never used by java.io or any Java code.
> Currently it is used by the hotspot in classloader.cpp (which I use in the test)
> and in libinstrument in InvocationAdapter.c. There is no way to test it in core-
> libs. One can argue if the canonicalize method is in the right file, but that
> should be a separate discussion.
> >
> I plan to review this, I just haven't had time yet. You are right that
> there is technical debt here, include dependency in the JPLIS agent
> which crept in when java.lang.instrument was updated to support
> augmenting of the boot class path.
> 
> -Alan