RFR 8222379: JFR TestClassLoadEvent.java failed due to EXCEPTION_ACCESS_VIOLATION

[coleen.phillimore at oracle.com]

Thank you Ioi!
Coleen

On 4/17/19 10:16 AM, Ioi Lam wrote:
> Looks good. Thanks for fixing this!
>
> - Ioi
>
> On 4/17/19 5:24 AM, coleen.phillimore at oracle.com wrote:
>> Summary: Give fatal error if CDS loses archive mapping; but map 
>> Windows RW because remapping is dangerous.
>>
>> Ioi and I discussed this change and thought it is best.  Windows only 
>> maps the CDS archive around 50% time because of ASLR and this retains 
>> the startup performance improvements for CDS on windows.
>>
>> Tested with mach5 tier1-3.
>>
>> open webrev at 
>> http://cr.openjdk.java.net/~coleenp/2019/8222379.01/webrev
>> bug link https://bugs.openjdk.java.net/browse/JDK-8222379
>>
>> Thanks,
>> Coleen
>>
>