6819061: G1: eliminate serial Other times that are proportional to the collection set length 6871109: G1: remove the concept of the scan only prefix Summary: Removed scan only regions and associated code. The young portion of the collection set is now constructed incrementally - when a young region is retired as the current allocation region it is added to the collection set. Reviewed-by: apetrusenko, iveresov, tonyp

Merge

6897143: Stress test crashes during HeapInspection using ParallelGC. Summary: ensure_parsability() must be called even if GC_locker prevents GC. Reviewed-by: ysr, chrisphi

6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize Summary: Replaces the G1-specific parameter with the existing ones that are used by the other GCs (YoungPLABSize and OldPLABSize) Reviewed-by: tonyp, johnc

6939027: G1: assertion failure during the concurrent phase of cleanup Summary: The outgoing region map is not maintained properly and it's causing an assert failure. Given that we don't actually use it, I'm removing it. I'm piggy-backing a small change on this which removes a message that it's printed before a Full GC when DisableExplicitGC is set. Reviewed-by: apetrusenko, ysr

6943926: G1: Integer overflow during heap region verification Summary: The expression that calculates the live bytes for a heap region can overflow for a suitably large humongous region/object. Cache the object size in a suitably sized local variable so that the expression is converted to a wider type. Reviewed-by: tonyp, jmasa, iveresov, apetrusenko

6937142: G1: improvements to debugging output (S-M) Summary: Various fixes to the G1 debugging output. Reviewed-by: johnc, iveresov