RFR(S) 8154752: Cleanup initialization of G1Policy

[Erik Helin]

On 2016-04-21, Mikael Gerdin wrote:
> Hi all,
> 
> Please review this small cleanup partially suggested in the review of
> 8154154.
> The change modifies G1Policy to initialize its members in the initialization
> list instead of in the constructor body and clarifies the dependencies that
> the G1Policy::init method has on G1CollectedHeap by forcing a caller to pass
> a heap and collection set pointer.
> The reasoning behind forcing the caller to pass a G1CollectionSet* is that I
> want to move towards only exposing "const G1CollectionSet*" in
> G1CollectedHeap. G1Policy is one of the places where it's clearly necessary
> to have a mutable G1CollectionSet.
> 
> Testing: RBT GC Testing
> Bug: https://bugs.openjdk.java.net/browse/JDK-8154752
> Webrev: http://cr.openjdk.java.net/~mgerdin/8154752/webrev.0

Looks good, Reviewed.

Thanks,
Erik

> /Mikael