Integrated: 8329488: Move OopStorage code from safepoint cleanup and remove safepoint cleanup code

[Coleen Phillimore]

On Tue, 19 Mar 2024 12:19:44 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This patch gives the ServiceThread a periodic wakeup (same as GuaranteedSafepointInterval) to check if it needs to clean out OopStorage blocks, and move the triggering of this cleaning out of the safepoint cleanup tasks.  Since ICBuffer, StringTable and SymbolTable rehashing have moved, there's nothing that actually triggers the nop safepoint to do cleaning (except SafepointALot), so the OopStorage cleanup won't be triggered.
> 
> With moving all of these out of the safepoint cleanup tasks, we can remove the code that sets up multiple threads to do safepoint cleanup.  We can also remove the JFR events and logging that times safepoint cleanup, and a logging test.
> 
> Tested with tier1-4.

This pull request has now been integrated.

Changeset: 3e9c3811
Author:    Coleen Phillimore <coleenp at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/3e9c3811669196945d7227affc28728670a256c5
Stats:     291 lines in 14 files changed: 10 ins; 237 del; 44 mod

8329488: Move OopStorage code from safepoint cleanup and remove safepoint cleanup code

Reviewed-by: kbarrett, eosterlund

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PR: https://git.openjdk.org/jdk/pull/18375