hg: jdk9/hs-gc/hotspot: 4 new changesets

[thomas.schatzl at oracle.com]

Changeset: 2749b7a7e9d8
Author:    tschatzl
Date:      2014-07-21 09:59 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/2749b7a7e9d8

8049051: Use of during_initial_mark_pause() in G1CollectorPolicy::record_collection_pause_end() prevents use of seperate object copy time prediction during marking
Summary: Replaced use of during_initial_mark_pause() with the variable last_pause_included_initial_mark that holds the real old value of _during_initial_mark_pause.
Reviewed-by: brutisso, ehelin

! src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp

Changeset: 3f1eced0e393
Author:    tschatzl
Date:      2014-07-21 09:59 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/3f1eced0e393

8048085: Aborting marking just before remark results in useless additional clearing of the next mark bitmap
Summary: Skip clearing the next bitmap if we just recently aborted since the full GC already clears this bitmap.
Reviewed-by: brutisso

! src/share/vm/gc_implementation/g1/concurrentMark.cpp
! src/share/vm/gc_implementation/g1/concurrentMark.hpp
! src/share/vm/gc_implementation/g1/concurrentMarkThread.cpp

Changeset: 3334afa474d7
Author:    tschatzl
Date:      2014-07-21 09:59 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/3334afa474d7

8048088: Conservative maximum heap alignment should take vm_allocation_granularity into account
Summary: Also consider os::vm_allocation_granularity in the calculation.
Reviewed-by: brutisso

! src/share/vm/runtime/arguments.cpp

Changeset: 5689ad43b108
Author:    tschatzl
Date:      2014-07-21 10:00 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/5689ad43b108

8048112: G1 Full GC needs to support the case when the very first region is not available
Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett.
Reviewed-by: brutisso

! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
! src/share/vm/gc_implementation/g1/g1MarkSweep.cpp
! src/share/vm/gc_implementation/g1/heapRegion.cpp
! src/share/vm/gc_implementation/g1/heapRegionSet.hpp
! src/share/vm/memory/genCollectedHeap.cpp
! src/share/vm/memory/space.hpp