RFR(XS): 8056930: Output host info under some condition for core dump

[Yumin Qi]

Hi,

   I made a small change to Windows part, when GetComputerNameEx fails, 
instead of do nothing, output "N/A".

Thanks
Yumin

On 9/5/2014 2:46 PM, Yumin Qi wrote:
> Please review
>
> Bug:  https://bugs.openjdk.java.net/browse/JDK-8056930
> Webrev:  http://cr.openjdk.java.net/~minqi/8056930/webrev00
>
>   After java crashed, we would like to know the host on which it 
> failed especially when doing parallel testing on multiple machines. 
> The most useful for knowing host name is telling if the test is 
> hardware related, that the test can only repeat on it. This piece of 
> code help to print out host name in debug mode.
>
>   Test: manually tested on Unix/Linux/Windows with 
> -XX:+CrashGCForDumpingJavaThread.
>    JPRT
>
> Thanks
> Yumin