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8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data

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Let HeapRegionSeq manage the heap region and auxiliary data to decrease the amount of responsibilities of G1CollectedHeap, and encapsulate this work from other code.

Reviewed-by: jwilhelm, jmasa, mgerdin, brutisso
This commit is contained in:
Thomas Schatzl 2014-08-18 16:10:44 +02:00
parent 71775c28e2
commit 2ee5ee89d4
21 changed files with 832 additions and 953 deletions
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12
hotspot/src/share/vm/gc_implementation/g1/g1BlockOffsetTable.hpp
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@ -231,10 +231,6 @@ public:
void set_bottom(HeapWord* new_bottom);
// Updates all the BlockOffsetArray's sharing this shared array to
// reflect the current "top"'s of their spaces.
void update_offset_arrays();
// Return the appropriate index into "_offset_array" for "p".
inline size_t index_for(const void* p) const;
@ -480,6 +476,8 @@ class G1BlockOffsetArrayContigSpace: public G1BlockOffsetArray {
blk_start, blk_end);
}
// Zero out the entry for _bottom (offset will be zero).
void zero_bottom_entry();
public:
G1BlockOffsetArrayContigSpace(G1BlockOffsetSharedArray* array, MemRegion mr);
@ -487,8 +485,10 @@ class G1BlockOffsetArrayContigSpace: public G1BlockOffsetArray {
// bottom of the covered region.
HeapWord* initialize_threshold();
// Zero out the entry for _bottom (offset will be zero).
void zero_bottom_entry();
void reset_bot() {
zero_bottom_entry();
initialize_threshold();
}
// Return the next threshold, the point at which the table should be
// updated.