RFR (M) 8201556: Disallow reading oops in ClassLoaderData if unloading

[Andrew Dinn]

Hi Coleen,

On 17/04/18 17:02, coleen.phillimore at oracle.com wrote:
> Summary: Move class_loader oop to an OopHandle, and assert that holder
> is alive when getting class_loader.
> 
> open webrev at http://cr.openjdk.java.net/~coleenp/8201556.01/webrev
> bug link https://bugs.openjdk.java.net/browse/JDK-8201556
> 
> Tested with mach5 tiers 1-7.
I have just been browsing the code in this area so thought I should
offer a 2nd review. The changes all look good to me (subtracting the
typo and legacy closure Kim mentioned).

regards,


Andrew Dinn
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Senior Principal Software Engineer
Red Hat UK Ltd
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