RFR: 8291555: Implement alternative fast-locking scheme [v62]

[Coleen Phillimore]

On Wed, 26 Apr 2023 16:07:33 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Remove unnecessary comments
>
> src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/Threads.java line 231:
> 
>> 229: 
>> 230:     public JavaThread owningThreadFromMonitor(ObjectMonitor monitor) {
>> 231:         if (VM.getVM().getCommandLineFlag("LockingMode").getInt() == 2) {
> 
> Please put a comment after that literal '2':
> 
>         if (VM.getVM().getCommandLineFlag("LockingMode").getInt() == 2 /* LM_LIGHTWEIGHT */) {

You could add the LM_LEGACY, LM_LIGHTWEIGHT literals to vmStructs.cpp and compare with them.

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PR Review Comment: https://git.openjdk.org/jdk/pull/10907#discussion_r1181662882