RFR(T) : 8243945 : use driver mode in runtime tests

[Igor Ignatyev]

Hi Gerard,

> On Apr 29, 2020, at 1:56 PM, gerard ziemski <gerard.ziemski at oracle.com> wrote:
> 
> hi Igor,
> 
> Looks good, thank you for cleaning so many files!
> 
thanks for reviewing them ;)
> On 4/29/20 2:19 PM, Igor Ignatyev wrote:
>> http://cr.openjdk.java.net/~iignatyev//8243945/webrev.00/
>>> 143 lines changed: 46 ins; 0 del; 97 mod;
>> Hi all,
>> 
>> could you please review the trivial patch which updates 109 runtime tests to use driver mode?
>> 
>> in most cases, the changes are as straightforward as 's/main/driver/', other changes are:
>>  - runtime/InvocationTests tests throw an exception instead of calling System.exit
>>  - runtime/condy/CondyLDCTest.java passes "-Xverify:all", although the test didn't do that before, it seems it was intended, in any case it won't cause any harm
>>  - in runtime/records/ignoreRecordAttribute.java, indent of jtreg test description block was fixed.
>> 
>> webrev: http://cr.openjdk.java.net/~iignatyev//8243945/webrev.00
>> (for the sake of reviewers, copyright year changes are omitted, the final patch changes years in )
>> JBS: https://bugs.openjdk.java.net/browse/JDK-8243945
>> testing: test/hotspot/jtreg/runtime
> 
> How did you determine which tests need to be updated to use driver mode? Can there be more?
this clean (as well as a few other) is a side effect of me working on JDK-8151707 where I used instrumented build of JDK to find tests which don't pass JVM flags to child processes, as I was mostly interested in a subset of all tests which fork processes, there can be other which can/should use driver mode.
> 
> In "ProtectionDomainCacheTest" we used to have extra arguments, i.e. "policy=test.policy -Djava.security.manager ProtectionDomainCacheTest", but now we don't?
right, ProtectionDomainCacheTest itself didn't need security manager being setup, it's needed for JVM which runs ProtectionDomainCacheTest$Test and L#99 and L#105 add these flags.

> 
> In "NestedThreadsListHandleInErrorHandlingTest" we used to have "-XX:+UnlockDiagnosticVMOptions -XX:+EnableThreadSMRStatistics", but now we don't?
> 
> In "ThreadsListHandleInErrorHandlingTest" we used to have "-XX:+UnlockDiagnosticVMOptions -XX:+EnableThreadSMRStatistics", but now we don't?
in both cases, we didn't have these flags in JVM which was doing actual testing, and I doubt EnableThreadSMRStatistics from the JVM which just creates a process and waits for it to finish is helpful. I can add -XX:+EnableThreadSMRStatistics to the child JVM if you think it can be helpful.
> 
> 
> In "CondyNewInvokeSpecialTest" we used to have "-Xverify:all", but now we don't?
kinda the same as w/ CondyLDCTest.java, not sure why I missed this one. I'll add -Xverify:all to the child JVM.
> 
> 
> In "ignoreRecordAttribute" we used to have "--enable-preview", but now we don't?

ignoreRecordAttribute doesn't load any classes which use preview features, and all child processes have --enable-preview (L#39 and L#45)

> 
> 
> cheers