[jdk21u] Integrated: 8314551: More generic way to handshake GC threads with monitor deflation

[Aleksey Shipilev]

On Mon, 2 Oct 2023 12:34:54 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to to complement [JDK-8307236](https://bugs.openjdk.org/browse/JDK-8307236) that is already in JDK 21. There is no bugtail in JDK 22 so far. Attn @rkennke.
> 
> Additional testing:
>  - [x] macos-aarch64-server-fastdebug, `hotspot:tier1`

This pull request has now been integrated.

Changeset: 60001763
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk21u/commit/60001763dff7809282f7279566924f5466ab1ff4
Stats:     3 lines in 1 file changed: 0 ins; 0 del; 3 mod

8314551: More generic way to handshake GC threads with monitor deflation

Reviewed-by: rkennke
Backport-of: 31c4e03d5d4682a10825bd7cf2d37971e686b31e

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PR: https://git.openjdk.org/jdk21u/pull/222