[master] RFR: Lilliput om world

Tue Jun 4 22:42:38 UTC 2024

Added a diagnostic option UseObjectMonitorTable to maintain performance of LM_LIGHTWEIGHT locking which is now defaulted to on in mainline.

Incorporated Axel's patch to support other platforms with UseObjectMonitorTable (branch to slow path).

Tested tier 1-4 on x86.  Fails both versions of this test, but not locally:  runtime/cds/TestDefaultArchiveLoading.java.

tier1 aarch64 in progress.

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Commit messages:
 - Add UseObjectMonitorTable to disable the table to allow performance work.

Changes: https://git.openjdk.org/lilliput/pull/181/files
  Webrev: https://webrevs.openjdk.org/?repo=lilliput&pr=181&range=00
  Stats: 725 lines in 21 files changed: 342 ins; 72 del; 311 mod
  Patch: https://git.openjdk.org/lilliput/pull/181.diff
  Fetch: git fetch https://git.openjdk.org/lilliput.git pull/181/head:pull/181

PR: https://git.openjdk.org/lilliput/pull/181