RFR: 8303089: [jittester] Add time limit to IRTree generation

[Evgeny Nikitin]

On Thu, 23 Feb 2023 01:46:05 GMT, Leonid Mesnik <lmesnik at openjdk.org> wrote:

>> Sometimes, the generation could take more than an hour and probably never stop. This PR adds a time limit (defaults to 10 minutes) to the generation of a single test.
>
> test/hotspot/jtreg/testlibrary/jittester/src/jdk/test/lib/jittester/Automatic.java line 143:
> 
>> 141:                 if (generatorThread.isAlive()) {
>> 142:                     // maxTime reached, so, proceed to next test generation
>> 143:                     generatorThread.interrupt();
> 
> I quickly looked at the code and I didn't find any places where the interrupted flag is checked. Does it stop the thread?

I didn't changed that code, and it is kind of misleading, yes. The limit I added concerns L124, the `generateIRTree` call. On the contrary, the InterruptedException you're looking for is captured in the `TestsGenerator`, methods `generateGoldenOut` and `compilePrinter` as well as in the `JavaCodeGenerator.compileJavaFile`.

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PR: https://git.openjdk.org/jdk/pull/12722