Mercurial > hg > graal-compiler
changeset 4098:ea640b5e949a
7106024: CMS: Removed unused code for precleaning in remark phase
Summary: Remove dead code.
Reviewed-by: stefank, ysr
| author | jmasa |
|---|---|
| date | Tue, 22 Nov 2011 14:18:39 -0800 |
| parents | dc467e8b2c5e |
| children | 7913e93dca52 |
| files | src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp src/share/vm/memory/cardTableModRefBS.cpp src/share/vm/memory/cardTableModRefBS.hpp |
| diffstat | 3 files changed, 0 insertions(+), 30 deletions(-) [+] |
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--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp Thu Nov 17 12:40:15 2011 -0800 +++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp Tue Nov 22 14:18:39 2011 -0800 @@ -3582,16 +3582,6 @@ " or no bits are set in the gc_prologue before the start of the next " "subsequent marking phase."); - // Temporarily disabled, since pre/post-consumption closures don't - // care about precleaned cards - #if 0 - { - MemRegion mr = MemRegion((HeapWord*)_virtual_space.low(), - (HeapWord*)_virtual_space.high()); - _ct->ct_bs()->preclean_dirty_cards(mr); - } - #endif - // Save the end of the used_region of the constituent generations // to be used to limit the extent of sweep in each generation. save_sweep_limits();
--- a/src/share/vm/memory/cardTableModRefBS.cpp Thu Nov 17 12:40:15 2011 -0800 +++ b/src/share/vm/memory/cardTableModRefBS.cpp Tue Nov 22 14:18:39 2011 -0800 @@ -662,23 +662,6 @@ return MemRegion(mr.end(), mr.end()); } -// Set all the dirty cards in the given region to "precleaned" state. -void CardTableModRefBS::preclean_dirty_cards(MemRegion mr) { - for (int i = 0; i < _cur_covered_regions; i++) { - MemRegion mri = mr.intersection(_covered[i]); - if (!mri.is_empty()) { - jbyte *cur_entry, *limit; - for (cur_entry = byte_for(mri.start()), limit = byte_for(mri.last()); - cur_entry <= limit; - cur_entry++) { - if (*cur_entry == dirty_card) { - *cur_entry = precleaned_card; - } - } - } - } -} - uintx CardTableModRefBS::ct_max_alignment_constraint() { return card_size * os::vm_page_size(); }
--- a/src/share/vm/memory/cardTableModRefBS.hpp Thu Nov 17 12:40:15 2011 -0800 +++ b/src/share/vm/memory/cardTableModRefBS.hpp Tue Nov 22 14:18:39 2011 -0800 @@ -435,9 +435,6 @@ MemRegion dirty_card_range_after_reset(MemRegion mr, bool reset, int reset_val); - // Set all the dirty cards in the given region to precleaned state. - void preclean_dirty_cards(MemRegion mr); - // Provide read-only access to the card table array. const jbyte* byte_for_const(const void* p) const { return byte_for(p);