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7143490: G1: Remove HeapRegion::_top_at_conc_mark_count

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Removed the HeapRegion::_top_at_conc_mark_count field. It is no longer needed as a result of the changes for 6888336 and 7127706. Refactored the closures that finalize and verify the liveness counting data so that common functionality was placed into a base class.

Reviewed-by: brutisso, tonyp
This commit is contained in:
John Cuthbertson 2012-04-25 10:23:12 -07:00
parent f5558edf7b
commit 377a04fe57
6 changed files with 64 additions and 192 deletions
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18
hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp
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@ -306,9 +306,6 @@ class HeapRegion: public G1OffsetTableContigSpace {
// If a collection pause is in progress, this is the top at the start
// of that pause.
// We've counted the marked bytes of objects below here.
HeapWord* _top_at_conc_mark_count;
void init_top_at_mark_start() {
assert(_prev_marked_bytes == 0 &&
_next_marked_bytes == 0,
@ -316,7 +313,6 @@ class HeapRegion: public G1OffsetTableContigSpace {
HeapWord* bot = bottom();
_prev_top_at_mark_start = bot;
_next_top_at_mark_start = bot;
_top_at_conc_mark_count = bot;
}
void set_young_type(YoungType new_type) {
@ -625,19 +621,6 @@ class HeapRegion: public G1OffsetTableContigSpace {
// last mark phase ended.
bool is_marked() { return _prev_top_at_mark_start != bottom(); }
void init_top_at_conc_mark_count() {
_top_at_conc_mark_count = bottom();
}
void set_top_at_conc_mark_count(HeapWord *cur) {
assert(bottom() <= cur && cur <= end(), "Sanity.");
_top_at_conc_mark_count = cur;
}
HeapWord* top_at_conc_mark_count() {
return _top_at_conc_mark_count;
}
void reset_during_compaction() {
guarantee( isHumongous() && startsHumongous(),
"should only be called for humongous regions");
@ -733,7 +716,6 @@ class HeapRegion: public G1OffsetTableContigSpace {
_evacuation_failed = b;
if (b) {
init_top_at_conc_mark_count();
_next_marked_bytes = 0;
}
}