On Sat, 7 Oct 2023 06:31:08 GMT, Alan Bateman <al...@openjdk.org> wrote:

>> src/hotspot/share/prims/jvmti.xml line 13044:
>> 
>>> 13042: 
>>> 13043:  <event label="Virtual Thread Start"
>>> 13044:          id="VirtualThreadStart" 
>>> const="JVMTI_EVENT_VIRTUAL_THREAD_START" num="87" phase="start" since="21">
>> 
>> Does "filtered" mean that the event can be enabled or disabled on a per 
>> thread basis, and therefore by removing this it means the event can only be 
>> enabled or disabled globally?
>
> That's right. The spec for SetEventNotificationMode lists the events that 
> cannot be enabled/disabled at the thread level. Both ThreadStart and 
> VirtualThreadStart are listed so I view this JBS/PR issue as fixing the 
> implementation.

Thank you for explaining, Alan. There is nothing to add.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16019#discussion_r1351005124

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