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comparison src/share/vm/gc_implementation/g1/heapRegion.hpp @ 6027:8a2e5a6a19a4

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7143490: G1: Remove HeapRegion::_top_at_conc_mark_count Summary: 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
author johnc
date Wed, 25 Apr 2012 10:23:12 -0700
parents f7a8920427a6
children a2f7274eb6ef
comparison
equal deleted inserted replaced
6026:9f059abe8cf2 6027:8a2e5a6a19a4
304 HeapWord* _prev_top_at_mark_start; 304 HeapWord* _prev_top_at_mark_start;
305 HeapWord* _next_top_at_mark_start; 305 HeapWord* _next_top_at_mark_start;
306 // If a collection pause is in progress, this is the top at the start 306 // If a collection pause is in progress, this is the top at the start
307 // of that pause. 307 // of that pause.
308 308
309 // We've counted the marked bytes of objects below here.
310 HeapWord* _top_at_conc_mark_count;
311
312 void init_top_at_mark_start() { 309 void init_top_at_mark_start() {
313 assert(_prev_marked_bytes == 0 && 310 assert(_prev_marked_bytes == 0 &&
314 _next_marked_bytes == 0, 311 _next_marked_bytes == 0,
315 "Must be called after zero_marked_bytes."); 312 "Must be called after zero_marked_bytes.");
316 HeapWord* bot = bottom(); 313 HeapWord* bot = bottom();
317 _prev_top_at_mark_start = bot; 314 _prev_top_at_mark_start = bot;
318 _next_top_at_mark_start = bot; 315 _next_top_at_mark_start = bot;
319 _top_at_conc_mark_count = bot;
320 } 316 }
321 317
322 void set_young_type(YoungType new_type) { 318 void set_young_type(YoungType new_type) {
323 //assert(_young_type != new_type, "setting the same type" ); 319 //assert(_young_type != new_type, "setting the same type" );
324 // TODO: add more assertions here 320 // TODO: add more assertions here
623 619
624 // Returns "false" iff no object in the region was allocated when the 620 // Returns "false" iff no object in the region was allocated when the
625 // last mark phase ended. 621 // last mark phase ended.
626 bool is_marked() { return _prev_top_at_mark_start != bottom(); } 622 bool is_marked() { return _prev_top_at_mark_start != bottom(); }
627 623
628 void init_top_at_conc_mark_count() {
629 _top_at_conc_mark_count = bottom();
630 }
631
632 void set_top_at_conc_mark_count(HeapWord *cur) {
633 assert(bottom() <= cur && cur <= end(), "Sanity.");
634 _top_at_conc_mark_count = cur;
635 }
636
637 HeapWord* top_at_conc_mark_count() {
638 return _top_at_conc_mark_count;
639 }
640
641 void reset_during_compaction() { 624 void reset_during_compaction() {
642 guarantee( isHumongous() && startsHumongous(), 625 guarantee( isHumongous() && startsHumongous(),
643 "should only be called for humongous regions"); 626 "should only be called for humongous regions");
644 627
645 zero_marked_bytes(); 628 zero_marked_bytes();
731 // Sets the "evacuation_failed" property of the region. 714 // Sets the "evacuation_failed" property of the region.
732 void set_evacuation_failed(bool b) { 715 void set_evacuation_failed(bool b) {
733 _evacuation_failed = b; 716 _evacuation_failed = b;
734 717
735 if (b) { 718 if (b) {
736 init_top_at_conc_mark_count();
737 _next_marked_bytes = 0; 719 _next_marked_bytes = 0;
738 } 720 }
739 } 721 }
740 722
741 // Requires that "mr" be entirely within the region. 723 // Requires that "mr" be entirely within the region.