RFR: 8286865: vmTestbase/vm/mlvm/meth/stress/jni/nativeAndMH/Test.java fails with Out of space in CodeCache [v2]

[Ramkumar Sunderbabu]

> MethodHandle invocations with Xcomp are filling up CodeCache quickly in the test, especially in machines with high number of processors.
> It is possible to measure code cache consumption per invocation, estimate overall consumption and bail out before CodeCache runs out of memory.
> But it is much simpler to exclude the test for Xcomp flag.
> 
> Additional Change: MethodHandles.lookup was done unnecessarily invoked for all iterations. Replaced it with single invocation.
> 
> PS: This issue is not seen in JDK 20 and above, possibly due to JDK-8290025, but the exclusion guards against vagaries of CodeCache management.

Ramkumar Sunderbabu has updated the pull request incrementally with one additional commit since the last revision:

  addressed review comment

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/26840/files
  - new: https://git.openjdk.org/jdk/pull/26840/files/b4d8af71..30cb217c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26840&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26840&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/26840.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26840/head:pull/26840

PR: https://git.openjdk.org/jdk/pull/26840