RFR(S): 8238000: Crash in ClassLoader::record_result while dynamic dumping netty

[Ioi Lam]

Hi Calvin,

The fix looks good to me.

Thanks
- Ioi

On 3/12/20 11:59 AM, Calvin Cheung wrote:
> bug: https://bugs.openjdk.java.net/browse/JDK-8238000
>
> webrev: http://cr.openjdk.java.net/~ccheung/jdk15/8238000/webrev.00/
>
> Make a copy of the _shared_path_table for use during dynamic CDS dump. 
> It is needed because some Java code continues to execute after dynamic 
> dump has finished. However, during dynamic dump, we have modified 
> FileMapInfo::_shared_path_table so FileMapInfo::shared_path(i) returns 
> incorrect information in ClassLoader::record_result().
>
> Passed tier1 - 4 testing.
>
> thanks,
>
> Calvin
>