Integrated: 8258576: Try to get zerobased CCS if heap is above 32 and CDS is disabled

[Richard Reingruber]

On Thu, 17 Dec 2020 10:59:27 GMT, Richard Reingruber <rrich at openjdk.org> wrote:

> Please review this small enhancement if CDS is disabled.
> 
> It tries to get a zerobased compressed class space if we have a not-zerobased compressed oops heap, i.e. the heap is above 32g. In this case there is a good chance to locate CCS below 32g.
> 
> The fix passed our CI testing: JCK and JTREG, also in Xcomp mode, SPECjvm2008, SPECjbb2015, Renaissance Suite,
> SAP specific tests with fastdebug and release builds on all platforms

This pull request has now been integrated.

Changeset: a6ab9e47
Author:    Richard Reingruber <rrich at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/a6ab9e47
Stats:     36 lines in 2 files changed: 25 ins; 0 del; 11 mod

8258576: Try to get zerobased CCS if heap is above 32 and CDS is disabled

Reviewed-by: mdoerr, stuefe

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PR: https://git.openjdk.java.net/jdk/pull/1815