RFR: 8223822: Add gc IDs in the log of gc verification

[Jie Fu]

Thanks Thomas for your review.

On 2019/5/14 下午5:29, Thomas Schatzl wrote:
> Hi,
>
> On Tue, 2019-05-14 at 15:35 +0800, Jie Fu wrote:
>> Hi all,
>>
>> JBS: https://bugs.openjdk.java.net/browse/JDK-8223822
>>
>> Please review the following patch which improves the readability of
>> gc verification log.
>> The change is helpful for gc analysis and debugging.
>> -----------------------------------
>> diff -r 6a60270af76b src/hotspot/share/logging/logPrefix.hpp
>> --- a/src/hotspot/share/logging/logPrefix.hpp   Mon May 13 20:45:03
>> 2019
> looks good.
>
> Thomas
>
>