RFR: 8337199: Add jcmd Thread.vthread_scheduler and Thread.vthread_pollers diagnostic commands [v2]

[Alan Bateman]

On Thu, 28 Nov 2024 14:21:50 GMT, Kevin Walls <kevinw at openjdk.org> wrote:

>> Alan Bateman has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Improve regex for matching poller String representation
>
> test/hotspot/jtreg/serviceability/dcmd/thread/VThreadCommandsTest.java line 96:
> 
>> 94:                 .shouldContain("Read I/O pollers:")
>> 95:                 .shouldContain("Write I/O pollers:")
>> 96:                 .shouldMatch("^\\[0\\] sun.nio.ch..+ \\[registered = [\\d]+, owner = .+\\]$");
> 
> Just a nit but are there three dots here in sun.nio.ch. that should literally match, so need the \\ 
> and then the other two other dots with a plus sign, to match one or more characters.

Well spotted, these should be escaped although it not doing so won't impact the match here.

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PR Review Comment: https://git.openjdk.org/jdk/pull/22414#discussion_r1862420265