Merge

Merge

6888336: G1: avoid explicitly marking and pushing objects in survivor spaces Summary: This change simplifies the interaction between GC and concurrent marking. By disabling survivor spaces during the initial-mark pause we don't need to propagate marks of objects we copy during each GC (since we never need to copy an explicitly marked object). Reviewed-by: johnc, brutisso

7128532: G1: Change default value of G1DefaultMaxNewGenPercent to 80 Reviewed-by: tonyp, jmasa

7125281: G1: heap expansion code is replicated Reviewed-by: brutisso, johnc

7121623: G1: always be able to reliably calculate the length of a forwarded chunked array Summary: Store the "next chunk start index" in the length field of the to-space object, instead of the from-space object, so that we can always reliably read the size of all from-space objects. Reviewed-by: johnc, ysr, jmasa

7121496: G1: do the per-region evacuation failure handling work in parallel Summary: Parallelize the removal of self forwarding pointers etc. by wrapping in a HeapRegion closure, which is then wrapped inside an AbstractGangTask. Reviewed-by: tonyp, iveresov

Merge

7113006: G1: excessive ergo output when an evac failure happens Summary: Introduce a flag that is set when a heap expansion attempt during a GC fails so that we do not consantly attempt to expand the heap when it's going to fail anyway. This not only prevents the excessive ergo output (which is generated when a region allocation fails) but also avoids excessive and ultimately unsuccessful expansion attempts. Reviewed-by: jmasa, johnc

Merge