diff options
author | jmasa <none@none> | 2011-11-22 14:18:39 -0800 |
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committer | jmasa <none@none> | 2011-11-22 14:18:39 -0800 |
commit | 4b257a98006e523d1af0769fbc0eff6025205693 (patch) | |
tree | dac52a3710e91d70f77a3f494af71a94cd82b35f | |
parent | 7d39f52649ceb0e72a2ca21bca7dfda779c9f746 (diff) |
7106024: CMS: Removed unused code for precleaning in remark phase
Summary: Remove dead code.
Reviewed-by: stefank, ysr
--HG--
extra : rebase_source : 85386fbd0785ab80a539929e3d5acf38d6f06c15
3 files changed, 0 insertions, 30 deletions
diff --git a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp index 162b991ec..84b6d640a 100644 --- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp +++ b/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp @@ -3582,16 +3582,6 @@ void CMSCollector::checkpointRootsInitialWork(bool asynch) { " 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(); diff --git a/src/share/vm/memory/cardTableModRefBS.cpp b/src/share/vm/memory/cardTableModRefBS.cpp index 11b0e384d..7e46d2d87 100644 --- a/src/share/vm/memory/cardTableModRefBS.cpp +++ b/src/share/vm/memory/cardTableModRefBS.cpp @@ -662,23 +662,6 @@ MemRegion CardTableModRefBS::dirty_card_range_after_reset(MemRegion mr, 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(); } diff --git a/src/share/vm/memory/cardTableModRefBS.hpp b/src/share/vm/memory/cardTableModRefBS.hpp index 8ed4e03d9..2d14f4c1a 100644 --- a/src/share/vm/memory/cardTableModRefBS.hpp +++ b/src/share/vm/memory/cardTableModRefBS.hpp @@ -435,9 +435,6 @@ public: 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); |