RFR: JDK-8058944: Unify the time reporting strings in G1 remark

[Bengt Rutisson]

Hi all,

Could I have  a couple of reviews for this small cleanup to the G1 
remark logging?

http://cr.openjdk.java.net/~brutisso/8058944/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8058944

Currently the remark logging looks like this on debug level:

[0,937s][info ][gc,start             ] GC(2) Pause Remark (0,937s)
[0,937s][debug][gc,start             ] GC(2) Finalize Marking (0,937s)
[0,955s][debug][gc                   ] GC(2) Finalize Marking (0,937s, 
0,955s) 17,949ms
[0,955s][debug][gc,start             ] GC(2) GC Ref Proc (0,955s)
[0,956s][debug][gc                   ] GC(2) GC Ref Proc (0,955s, 
0,956s) 0,279ms
[0,956s][debug][gc,start             ] GC(2) Unloading (0,956s)
[0,965s][debug][gc                   ] GC(2) Unloading (0,956s, 0,965s) 
9,623ms
[0,965s][debug][gc,start             ] GC(2) GC Aggregate Data (0,965s)
[0,966s][debug][gc                   ] GC(2) GC Aggregate Data (0,965s, 
0,966s) 0,614ms
[0,966s][info ][gc                   ] GC(2) Pause Remark 89M->89M(507M) 
(0,937s, 0,966s) 28,653ms


With the proposed change it will look like this:

[0,946s][info ][gc,start             ] GC(2) Pause Remark (0,946s)
[0,946s][debug][gc,start             ] GC(2) Finalize Marking (0,946s)
[0,960s][debug][gc                   ] GC(2) Finalize Marking (0,946s, 
0,960s) 13,677ms
[0,960s][debug][gc,start             ] GC(2) Ref Proc (0,960s)
[0,961s][debug][gc                   ] GC(2) Ref Proc (0,960s, 0,960s) 
0,524ms
[0,961s][debug][gc,start             ] GC(2) Unloading (0,961s)
[0,972s][debug][gc                   ] GC(2) Unloading (0,961s, 0,972s) 
11,425ms
[0,972s][debug][gc,start             ] GC(2) Aggregate Data (0,972s)
[0,972s][debug][gc                   ] GC(2) Aggregate Data (0,972s, 
0,972s) 0,377ms
[0,972s][info ][gc                   ] GC(2) Pause Remark 62M->62M(506M) 
(0,946s, 0,972s) 26,243ms


Thanks,
Bengt