[PATCH] 7901019: jol estimates do not take AllocationStyle into the account

[Timur Gibadullin]

Hi! Thanks for the jol, which is such a handy tool. I'd like to improve it
and propose patch. I am trying to solve a bug with hotspot layouter, which
is described in the issue
<https://bugs.openjdk.java.net/browse/CODETOOLS-7901019> in the bug
database. And this is my first attempt to solve it, I prepared a patch (sending
as attahced to this mail). In the patch I followed Aleksey's comment from
the issue and added fieldAllocationStyle option to the HotspotLayouter
and changed
HotspotLayouter's layout, now it emulates layout_fields method of the
ClassFileParser
from Hotspot, actually, I ported this method from the Hotspot, refactored
it and dropped some unnecessary for the jol parts. Also I made little
additions to FieldData and ClassData classes, they are required by the
new layout
method, and added a new example, which is called JOLSample_26_Hotspot.
Please, share your thoughts and give me any feedback and comments about my
patch.


-- 
Best regards, Timur Gibadullin