Need reviewer for 6902010: (cl) Delay initialization of ClassLoader.parallelLoaders

[Valerie Peng]

Changes look fine to me as well.
BTW, I normally run all regression tests under "java/lang 
java/net/URLClassLoader sun/applet/AppletClassLoader" for classloader 
related changes.
Thanks,
Valerie

On 11/18/09 09:19, Mandy Chung wrote:
> Looks good.  I reviewed your latest webrev that incorporated Rémi's 
> suggestion.
>
> Mandy
>
> Alan Bateman wrote:
>> Valerie,
>>
>> I'd like to re-visit the initialization of the parallel-capable 
>> loaders [1]. Currently the set of parallel-capable loader types is 
>> created by ClassLoader's initializer. That works today but is a bit 
>> fragile in that any changes or fixes that cause ClassLoader to be 
>> initialized earlier in the VM startup could cause problems. For 
>> example, if ClassLoader were to be initialized earlier then adding 
>> the initial element will cause a weak reference to be created and 
>> that will NPE in the Reference's initializer as the main thread isn't 
>> in a thread group at that point. All code that executes before the 
>> system classes are fully initialized requires great care so for this 
>> one, I think the simplest thing would be to delay the initialization 
>> unless the first loader is created. Does that seem reasonable? I've 
>> put a webrev with the proposed changes here:
>>  http://cr.openjdk.java.net/~alanb/6902010/webrev.00/
>> For testing, I've been using the tests in 
>> test/java/lang/ClassLoader/deadlock.
>>
>> Thanks,
>> Alan.
>>
>> [1] http://hg.openjdk.java.net/jdk7/tl/jdk/rev/45ff1a9d4edb
>>
>>
>