On Thu, 4 May 2023 22:32:36 GMT, Coleen Phillimore <cole...@openjdk.org> wrote:

> The ResourceHashtable conversion for JDK-8292741 didn't add the resizing 
> code.  The old hashtable code was tuned for resizing in anticipation of large 
> hashtables for JVMTI tags.  This patch ports over the old hashtable resizing 
> code.  It also adds a ResourceHashtable::put_fast() function that prepends to 
> the bucket list, which is also reclaims the performance of the old hashtable 
> for this test with 10M tags.  The ResourceHashtable put function is really a 
> put_if_absent. This can be cleaned up in a future change.  Also, the remove 
> function needed a lambda to destroy the WeakHandle, since resizing requires 
> copying entries.
> 
> Tested with JVMTI and JDI tests locally, and tier1-4 tests.

Serguei, thank you for doing a first pass.

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PR Comment: https://git.openjdk.org/jdk/pull/13818#issuecomment-1536157769

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