RFR: 8146530: [testbug] some tests fail because the compiler is using Java heap memory

[Stefan Johansson]

Thanks Vladimir, Jon and Jesper,

I'll remove that requires for EnableJVMCI and update copyrights before 
pushing.

Stefan

On 2016-06-08 18:10, Vladimir Kozlov wrote:
> Only UseJVMCICompiler triggers usage of java compiler.
>
> EnableJVMCI is false only on embedded platforms as result you will not 
> run the test at all if you check it. Please, remove this check.
>
> Thanks,
> Vladimir
>
> On 6/8/16 2:29 AM, Stefan Johansson wrote:
>> Hi all,
>>
>> Please review this test fix for:
>> https://bugs.openjdk.java.net/browse/JDK-8146530
>>
>> Webrev:
>> http://cr.openjdk.java.net/~sjohanss/8146530/hotspot.00/
>>
>> Summary:
>> This test seems to fail because of two things. Either because it is
>> executed with +ExplicitGCInvokesConcurrent or that a Java compiler is
>> used via JVMCI. The suggested fix is to use @requires to avoid running
>> the test with these options.
>>
>> The reason ExplicitGCInvokesConcurrent fails the test is because the
>> test is written to rely on calling System.gc() to have a clear view when
>> starting the test, and if this call instead starts a concurrent cycle
>> the test might fail.
>>
>> Using JVMCI causes the test to fail because it leads to unexpected
>> amount of allocated data and there for the assumptions made by the test
>> does not hold.
>>
>> Testing:
>> Verified that the test is not executed when these options are given on
>> the command-line.
>>
>> Thanks,
>> Stefan