Integrated: 8335902: Parallel: Refactor VM_ParallelGCFailedAllocation and VM_ParallelGCSystemGC

[Albert Mingkun Yang]

On Mon, 8 Jul 2024 16:18:22 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Similar cleanup as https://github.com/openjdk/jdk/pull/19056 but in Parallel. As a result, the corresponding code in `SerialHeap` and `ParallelScavengeHeap` share much similarity.
> 
> The easiest way to review is to start from these two VM operations, `VM_ParallelCollectForAllocation` and `VM_ParallelGCCollect` and follow the new code directly, where one can see how allocation-failure triggers various GCs with different collection efforts.
> 
> Test: tier1-6; perf-neural for dacapo, specjvm2008, specjbb2015 and cachestresser.

This pull request has now been integrated.

Changeset: 34d8562a
Author:    Albert Mingkun Yang <ayang at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/34d8562a913b8382601e4c0c31ad34a663b9ec0a
Stats:     342 lines in 14 files changed: 88 ins; 169 del; 85 mod

8335902: Parallel: Refactor VM_ParallelGCFailedAllocation and VM_ParallelGCSystemGC

Reviewed-by: gli, zgu

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PR: https://git.openjdk.org/jdk/pull/20077