[jdk16] Integrated: 8258007: Add instrumentation to NativeLibraryTest

[Brent Christian]

On Fri, 18 Dec 2020 22:33:11 GMT, Brent Christian <bchristi at openjdk.org> wrote:

> This change adds some extra test output for NativeLibraryTest, primarily via an update to the ForceGC utility class.
> 
> It was observed that there was nothing preventing the Cleaner from cleaning the short-lived Object that ForceGC registers before await()/doit()/System.gc() is even called.
> 
> The new 'o' reference is kept alive until FoceGC.await() has been called.
> 
> We should find out a little more the next time NativeLibraryTest fails (or perhaps it won't fail anymore!)

This pull request has now been integrated.

Changeset: e680ebeb
Author:    Brent Christian <bchristi at openjdk.org>
URL:       https://git.openjdk.java.net/jdk16/commit/e680ebeb
Stats:     13 lines in 2 files changed: 9 ins; 0 del; 4 mod

8258007: Add instrumentation to NativeLibraryTest

Reviewed-by: mchung, naoto

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PR: https://git.openjdk.java.net/jdk16/pull/53