On Tue, 23 Jul 2024 14:27:34 GMT, Coleen Phillimore <cole...@openjdk.org> wrote:
>> src/hotspot/share/runtime/lightweightSynchronizer.cpp line 105:
>>
>>> 103: };
>>> 104:
>>> 105: class LookupMonitor : public StackObj {
>>
>> I'm not understanding why we need this little wrapper class.
>
> It's a two way lookup. The plain Lookup class is used to lookup the Monitor
> given the object. This LookupMonitor class is used to lookup the object
> given the Monitor. The CHT takes these wrapper classes. Maybe we should
> rename LookupObject to be more clear?
As @coleenp said there are two lookups. One when you have the object and want
to get or insert a new ObjectMonitor. Or the second when the deflator has an
ObjectMonitor and wants to deflate and remove that object - ObjectMonitor
association.
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PR Review Comment: https://git.openjdk.org/jdk/pull/20067#discussion_r1715356203
