RFR: 8265933: Move Java monitor related fields from class Thread to JavaThread

[Patricio Chilano Mateo]

On Wed, 28 Apr 2021 14:05:38 GMT, Robbin Ehn <rehn at openjdk.org> wrote:

>> Hi,
>> 
>> Please review the following change. Fields in class Thread related to Java object monitors like _current_pending_monitor, _current_pending_monitor_is_from_java, _current_waiting_monitor and _Stalled should be moved to the JavaThread class. Members _OnTrap and _TypeTag were grouped together with _Stalled but are not used so I removed them. It seems they were part of the ObjectMonitor implementation at some point but I couldn't find how they were used.
>> Tested in mach5 tier1-2.
>> 
>> Thanks,
>> Patricio
>
> Marked as reviewed by rehn (Reviewer).

Thanks @robehn, @dcubed-ojdk, @dholmes-ora and @coleenp for the reviews!

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PR: https://git.openjdk.java.net/jdk/pull/3722