[11u]: Backport of RFR 8211122: Reduce the number of internal classes made accessible to jdk.unsupported

[Langer, Christoph]

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This backport is needed as prerequisite for further items ��

> -----Original Message-----
> From: Langer, Christoph
> Sent: Mittwoch, 26. Juni 2019 17:04
> To: jdk-updates-dev at openjdk.java.net
> Cc: AWT-DEV Mailing List <awt-dev at openjdk.java.net>; Java Core Libs
> <core-libs-dev at openjdk.java.net>
> Subject: [11u]: Backport of RFR 8211122: Reduce the number of internal
> classes made accessible to jdk.unsupported
> 
> Hi,
> 
> next try, here we go again...
> 
> I'd like to backport "JDK-8211122: Reduce the number of internal classes
> made accessible to jdk.unsupported". The main reason for backporting this
> item is that it'll ease further backports which base on that changeset (e.g.
> JDK-8216039). The patch is quite extensive and so doesn't fully apply. I had to
> resolve some rejects and also modify a few other places. Lots of the rejects
> were about copyright years (especially in the hotspot tests) which could be
> dropped. Find below the link for a full webrev and an incremental one which
> only contains my manual changes. Testing in SAP's test system does not
> show regressions.
> 
> My initial proposal for the backport of this change assumed that we could
> take JDK-8205537 and JDK-8211121 as prerequisites [0]. I have to step back
> from that idea because both changes would remove stuff which you
> probably don't want to remove in an update release. The modifications to
> this patch to accommodate for the missing prerequisites are quite minor,
> though. In java.desktop's sun.applet.AppletSecurity.java we only have to
> include the SharedSecrets from the new package jdk.internal.access instead
> of jdk.internal.misc. To keep jdk.unsupported's
> sun.reflect.ReflectionFactory::newInstanceForSerialization method working
> without having to open up jdk.internal.access for jdk.unsupported (which
> was the whole purpose of this change) we need to keep little wrapper stubs
> for jdk.internal.misc.JavaSecurityAccess and jdk.internal.misc.SharedSecrets.
> 
> Here are the links:
> Original bug: https://bugs.openjdk.java.net/browse/JDK-8211122
> Original review discussion: https://mail.openjdk.java.net/pipermail/core-
> libs-dev/2018-November/056397.html
> Original changeset: http://hg.openjdk.java.net/jdk/jdk/rev/3c6aa484536c
> Full webrev:
> http://cr.openjdk.java.net/~clanger/webrevs/8211122.11u.full.1/
> Incremental Webrev of manual changes:
> http://cr.openjdk.java.net/~clanger/webrevs/8211122.11u.manual.1/
> Rejects of the original apply:
> http://cr.openjdk.java.net/~clanger/webrevs/8211122.rejects.patch
> 
> Thanks
> Christoph
> 
> [0] https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2019-
> June/001316.html