RFR: 8359110: Log accumulated GC and process CPU time upon VM exit [v10]

[Thomas Schatzl]

On Mon, 30 Jun 2025 13:55:24 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> I've listed a couple more nits.
> 
> Given that JDK-8274051 has now been integrated should the os::elapsedVTime be removed from this patch?
> 
> I know that we talked about the vtime name earlier. Should we still use the `vtime` name now that we have removed elapsedVTime?

I concur with @stefank: we just removed `vtime` in other gc code, simply using `cpu_time`. 

`_vmthread_cpu_time` seems to be a lot more descriptive than `_vm_vtime`. At least add `thread` - the name of that thread is `VMThread` after all (as opposed to the whole VM what the current name implies to me).

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PR Comment: https://git.openjdk.org/jdk/pull/25779#issuecomment-3019468123