RFR (S) 8007142: Add utility classes for writing better multiprocess tests in jtreg

[Yekaterina Kantserova]

On 02/01/2013 03:20 PM, Alan Bateman wrote:
> On 01/02/2013 13:32, Yekaterina Kantserova wrote:
>>
>> I've done some testing before I've changed JDKToolFinder. Bellow are 
>> 2 cases:
>>
>> 1) *compile.jdk != test.jdk*
>> ./build/linux-amd64/j2sdk-image/bin/java -jar jtreg.jar -compilejdk 
>> /localhome/java/jdk1.7.0_09 test.java
>>
>> test.jdk=../build/linux-amd64/j2sdk-image/jre
>> compile.jdk=/localhome/java/jdk1.7.0_09
>> java.home=../build/linux-amd64/j2sdk-image/jre
>>
>> 2) *compile.jdk == test.jdk*
>> ./build/linux-amd64/j2sdk-image/bin/java -jar jtreg.jar -jdk|-testjdk 
>> /localhome/java/jdk1.7.0_09 test.java
>>
>> test.jdk /localhome/java/jdk1.7.0_09
>> compile.jdk /localhome/java/jdk1.7.0_09
>> java.home /localhome/java/jdk1.7.0_09/jre
>>
>> It seems like test.jdk is always equal to java.home (besides /jre 
>> part). Are there some rules how -jdk and -compilejdk should be used?
> Normally you specify the JDK/JRE to test via the -jdk option. When you 
> only specify -jdk then you will see that test.jdk and compile.jdk have 
> the same value.
>
> When testing a JRE then you need to specify both -jdk and -compilejdk, 
> the latter being the JDK to use to compile the tests. In that scenario 
> you will see that test.jdk and compile.jdk are different (as expected).
>

Thanks for explanation! But I'm still confused.

In my use case I need to test /_the tool_/ I'll find with JDKToolFinder. 
It will work if just -jdk will be specified. But if -compilejdk happens 
to be specified the results of my tests will be useless. Furthermore, it 
would be hard to detect. Do you think there is a solution that covers 
all use cases?

// Katja

> -Alan.