[8u] RFR(S) 8044107 : Add Diagnostic Command to list all ClassLoaders

[David Holmes]

This looks like an accurate backport to me.

Thanks,
David

On 22/12/2017 4:19 PM, David Buck wrote:
> Hi!
> 
> Please review this very simple serviceability backport to 8u. The only 
> difference between the JDK 9 changeset and the JDK 8 changeset is that 
> the ClassLoaderDataGraph::cld_do function was already backported to JDK 
> 8 in the fix for 8049421 [0]. So the changes for adding 
> classLoaderData.hpp|cpp are already in JDK 8 line-for-line exactly the 
> same as they are in JDK 9.
> 
> bug report:
> https://bugs.openjdk.java.net/browse/JDK-8044107
> 
> JDK 9 changeset:
> http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/56a35b09e0d4
> 
> JDK 9 code review thread
> May 2014: 
> http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-May/014072.html
> June 2014: 
> http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-June/014127.html
> 
> JDK 8 webrev for review:
> http://cr.openjdk.java.net/~dbuck/8044107_jdk8_ver00/
> 
> Testing:
> JPRT (hotspot testset)
> jtreg test included in changeset
> manually confirmed new diagnostic command works as expected
> 
> Cheers,
> -Buck
> 
> [0] http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/2c6ef90f030a