RFR: 8306843: JVMTI tag map extremely slow after JDK-8292741 [v2]

[Coleen Phillimore]

On Mon, 8 May 2023 05:25:04 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> src/hotspot/share/utilities/resourceHash.hpp line 147:
>> 
>>> 145:   */
>>> 146:   bool put_fast(K const& key, V const& value) {
>>> 147:     unsigned hv = HASH(key);
>> 
>> I think `put_fast` is not clear enough. Maybe `put_must_be_absent()` or something more concise.
>
> I would suggest `put_when_absent` to complement `put_if_absent` - with suitable descriptive comments of course.

This is a good name.  Updated.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13818#discussion_r1187483386