RFR: 8307348 - Parallelize heap walk for ObjectCount(AfterGC) JFR event collection [v4]

[Albert Mingkun Yang]

On Fri, 5 May 2023 06:49:15 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> I think safepoint_workers is "fine" to use from VM_GC_HeapInspection.

I see; the name contains "GC", but it doesn't really correspond to a gc-safepoint (young/full gc pause). (To make matters worse, that vm-op can potentially perform a full-gc...)

Then, `populate_table` will get diff workers, depending whether it's called inside a gc-safepoint or not.

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PR Comment: https://git.openjdk.org/jdk/pull/13774#issuecomment-1536098617