Integrated: 8347817: Timeouts running test/jdk/java/lang/String/concat/HiddenClassUnloading.java with fastdebug builds

[Richard Reingruber]

On Wed, 15 Jan 2025 14:14:37 GMT, Richard Reingruber <rrich at openjdk.org> wrote:

> This PR reverts the fix from [JDK-8339166](https://bugs.openjdk.org/browse/JDK-8339166) because it increases the runtime of the test a lot.
> Instead a full gc is requested via the whitebox api. This solves the issues (see bug description) and it is also clearer and more reliable then allocating objects and classes expecting a gc because of the small heap.
> The heap setting is also removed since it is not needed anymore.
> 
> #### Testing: Duration Running HiddenClassUnloading with fastdebug Builds
> 
> I'm giving the minimum of a few runs because durations vary by +/- 10s.
> 
> 
> Linux / x86_64:
> After JDK-8339166:    3m15s
> JDK-8339166 reverted:   50s
> PR:                     50s
> 
> macOS / M1:
> After JDK-8339166:    2m30s
> JDK-8339166 reverted:   30s
> PR:                     30s
> 
> Linux / ppc64le
> After JDK-8339166:    12m30s
> JDK-8339166 reverted:  2m30s  (failure: no classes unloaded)
> PR:                    2m30s  (success)

This pull request has now been integrated.

Changeset: 15d6469e
Author:    Richard Reingruber <rrich at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/15d6469e8da635364c0ba83e425fd149c2d69495
Stats:     13 lines in 1 file changed: 10 ins; 0 del; 3 mod

8347817: Timeouts running test/jdk/java/lang/String/concat/HiddenClassUnloading.java with fastdebug builds

Reviewed-by: clanger, mbaesken, mdoerr

-------------

PR: https://git.openjdk.org/jdk/pull/23137