RFR(M) : Add CTW test for boot module

[Igor Ignatyev]

Vladimir,

In current implementation, CTW is parallelized itself, we compile classes independently by CICompilerCount threads, so I don't think having N separate processes will give us any improvements here. 

-- Igor

> On Apr 12, 2017, at 7:55 PM, Vladimir Kozlov <vladimir.kozlov at oracle.com> wrote:
> 
> Igor,
> 
> When we ran CTW in Nightly before we sliced rt.jar to few parts using CompileTheWorldStartAt/CompileTheWorldStopAt to get better parallelism.
> Can we do the same here? You already have mechanism to restart with N+1 after error.
> 2 hours for serial test execution is too long - would be nice to parallelize it.
> 
> Thanks,
> Vladimir
> 
> On 4/12/17 7:23 PM, Igor Ignatyev wrote:
>> http://cr.openjdk.java.net/~iignatyev//8178291/webrev.00/index.html
>>> 237 lines changed: 236 ins; 0 del; 1 mod;
>> 
>> Hi all,
>> 
>> could you please review the patch which adds a test which runs CTW for lib/modules?
>> 
>> Besides a file w/ jtreg test description, the patch contains CtwRunner class, which is a driver class for CTW tests. it compiles all classes from a target and, in case of an error, saves information about the error and restart CTW starting from the next class. The test takes approx. 2 hours to complete.
>> 
>> currently there are 20 known errors related to class initialization. corresponding bugs will be filed and fixed shortly.
>> 
>> webrev: http://cr.openjdk.java.net/~iignatyev//8178291/webrev.00/index.html
>> jbs: https://bugs.openjdk.java.net/browse/JDK-8178291
>> testing: test/applications/ctw/Modules.java
>> 
>> Thanks,
>> -- Igor
>>