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comparison src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp @ 495:234c22e54b98

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6784849: par compact - can fail when to_space is non-empty Reviewed-by: jmasa, tonyp
author jcoomes
date Thu, 18 Dec 2008 10:53:35 -0800
parents 0f773163217d
children b27c885f75f9
comparison
equal deleted inserted replaced
494:d593294016c3 495:234c22e54b98
1152 SpaceId& src_space_id, 1152 SpaceId& src_space_id,
1153 HeapWord*& src_space_top, 1153 HeapWord*& src_space_top,
1154 HeapWord* end_addr); 1154 HeapWord* end_addr);
1155 1155
1156 // Decrement the destination count for each non-empty source region in the 1156 // Decrement the destination count for each non-empty source region in the
1157 // range [beg_region, region(region_align_up(end_addr))). 1157 // range [beg_region, region(region_align_up(end_addr))). If the destination
1158 // count for a region goes to 0 and it needs to be filled, enqueue it.
1158 static void decrement_destination_counts(ParCompactionManager* cm, 1159 static void decrement_destination_counts(ParCompactionManager* cm,
1160 SpaceId src_space_id,
1159 size_t beg_region, 1161 size_t beg_region,
1160 HeapWord* end_addr); 1162 HeapWord* end_addr);
1161 1163
1162 // Fill a region, copying objects from one or more source regions. 1164 // Fill a region, copying objects from one or more source regions.
1163 static void fill_region(ParCompactionManager* cm, size_t region_idx); 1165 static void fill_region(ParCompactionManager* cm, size_t region_idx);
1228 SpaceId src_space_id, 1230 SpaceId src_space_id,
1229 HeapWord* src_beg, HeapWord* src_end); 1231 HeapWord* src_beg, HeapWord* src_end);
1230 #endif // #ifndef PRODUCT 1232 #endif // #ifndef PRODUCT
1231 1233
1232 #ifdef ASSERT 1234 #ifdef ASSERT
1235 // Sanity check the new location of a word in the heap.
1236 static inline void check_new_location(HeapWord* old_addr, HeapWord* new_addr);
1233 // Verify that all the regions have been emptied. 1237 // Verify that all the regions have been emptied.
1234 static void verify_complete(SpaceId space_id); 1238 static void verify_complete(SpaceId space_id);
1235 #endif // #ifdef ASSERT 1239 #endif // #ifdef ASSERT
1236 }; 1240 };
1237 1241
1395 if (is_in((HeapWord*)p, beg_addr, end_addr)) { 1399 if (is_in((HeapWord*)p, beg_addr, end_addr)) {
1396 adjust_pointer(p); 1400 adjust_pointer(p);
1397 } 1401 }
1398 } 1402 }
1399 1403
1404 #ifdef ASSERT
1405 inline void
1406 PSParallelCompact::check_new_location(HeapWord* old_addr, HeapWord* new_addr)
1407 {
1408 assert(old_addr >= new_addr || space_id(old_addr) != space_id(new_addr),
1409 "must move left or to a different space");
1410 }
1411 #endif // ASSERT
1412
1400 class MoveAndUpdateClosure: public ParMarkBitMapClosure { 1413 class MoveAndUpdateClosure: public ParMarkBitMapClosure {
1401 public: 1414 public:
1402 inline MoveAndUpdateClosure(ParMarkBitMap* bitmap, ParCompactionManager* cm, 1415 inline MoveAndUpdateClosure(ParMarkBitMap* bitmap, ParCompactionManager* cm,
1403 ObjectStartArray* start_array, 1416 ObjectStartArray* start_array,
1404 HeapWord* destination, size_t words); 1417 HeapWord* destination, size_t words);