RFR (S): 8199882: compiler/uncommontrap/TestDeoptOOM.java failed w/ fatal error: ExceptionMark constructor expects no pending exceptions

[coleen.phillimore at oracle.com]

This is a very nice cleanup and fix.  Treating this class specially in 
all these places was really a mess.

Thanks,
Coleen

On 5/31/18 11:39 PM, David Holmes wrote:
> Bug: https://bugs.openjdk.java.net/browse/JDK-8199882
> webrev: http://cr.openjdk.java.net/~dholmes/8199882/webrev/
>
> The lazy loading (not initialization, despite the method names) of the 
> AbstractOwnableSynchronizer class (needed for deadlock detection and 
> stack dumps) has caused a number of problems due to the potential for 
> loading exceptions (specifically OOME), which result in code that does 
> not anticipate exceptions, encountering them.
>
> The bug discusses a number of possible solutions but the chosen one is 
> to simply pre-load the AOS class along with the numerous other core 
> classes that get pre-loaded.
>
> This does of course add a small increment to startup time, but it 
> should be negligible in the overall scheme of things and not something 
> to be unduly concerned about (Claes has commented in chat that he 
> doesn't see it as an issue.)
>
> Testing:
>   - mach5 tier1,2,3
>   - java/lang/management/*
>   - java/util/concurrent/*
>   - compiler/uncommontrap/TestDeoptOOM.java
>
> Thanks,
> David