Integrated: 8371783: Refactor GCCause in VM_CollectForMetadataAllocation

[Joel Sikström]

On Thu, 13 Nov 2025 10:08:36 GMT, Joel Sikström <jsikstro at openjdk.org> wrote:

> Hello,
> 
> We should improve how we use and set GCCause in VM_CollectForMetadataAllocation to make it more clear when reading the code what is going on.
> 
> When constructing a VM_CollectForMetadataAllocation operation, we pass in a GCCause, which is not always the cause that is used, since we might also have to clear soft references as a last resort if earlier collection attemps is not enough to free up memory.
> 
> The GCCauseSetter at the start of this operation is also redundant as subsequent calls to initiate a GC set the cause themselves.
> 
> Testing:
> * Oracle's tier1-3

This pull request has now been integrated.

Changeset: d01e7d98
Author:    Joel Sikström <jsikstro at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/d01e7d9850a57dd8e4849e2b7db6eacb37605647
Stats:     15 lines in 3 files changed: 5 ins; 3 del; 7 mod

8371783: Refactor GCCause in VM_CollectForMetadataAllocation

Reviewed-by: kbarrett, ayang

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PR: https://git.openjdk.org/jdk/pull/28287