RFR: 8292681: Add JMH for ProtectionDomain [v2]

[Eric Caspole]

On Thu, 25 Aug 2022 09:14:07 GMT, Sean Mullan <mullan at openjdk.org> wrote:

>> Eric Caspole has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Updates from reviewers comments
>
> test/micro/org/openjdk/bench/java/security/ProtectionDomainBench.java line 90:
> 
>> 88:         for (int i = 0; i < numberOfClasses; i++) {
>> 89:             classNames[i] = "B" + i;
>> 90:             compiledClasses[i] = InMemoryJavaCompiler.compile(classNames[i], B(i));
> 
> Is it possible to use the existing `jdk.test.lib.compiler.InMemoryJavaCompiler` class instead of writing a new one?

It needs to be added into the benchmarks.jar, and there are already 2 copies of it in different test suites so it seems like this is how it's done.

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PR: https://git.openjdk.org/jdk/pull/9950