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8318908: Parallel: Remove ExtendedCardValue

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Reviewed-by: tschatzl, sjohanss
This commit is contained in:
Albert Mingkun Yang 2023-10-31 14:23:18 +00:00
parent 7452d50be5
commit f4c5db92ea
2 changed files with 2 additions and 37 deletions
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15
src/hotspot/share/gc/parallel/psCardTable.cpp
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@ -389,20 +389,7 @@ void PSCardTable::verify_all_young_refs_imprecise() {
bool PSCardTable::addr_is_marked_imprecise(void *addr) {
CardValue* p = byte_for(addr);
CardValue val = *p;
if (card_is_dirty(val))
return true;
if (card_is_newgen(val))
return true;
if (card_is_clean(val))
return false;
assert(false, "Found unhandled card mark type");
return false;
return is_dirty(p);
}
bool PSCardTable::is_in_young(const void* p) const {

24
src/hotspot/share/gc/parallel/psCardTable.hpp
View File

@ -63,11 +63,6 @@ class PSCardTable: public CardTable {
HeapWord* const start,
HeapWord* const end);
enum ExtendedCardValue {
youngergen_card = CT_MR_BS_last_reserved + 1,
verify_card = CT_MR_BS_last_reserved + 5
};
void scan_obj_with_limit(PSPromotionManager* pm,
oop obj,
HeapWord* start,
@ -77,9 +72,6 @@ class PSCardTable: public CardTable {
PSCardTable(MemRegion whole_heap) : CardTable(whole_heap),
_preprocessing_active_workers(0) {}
static CardValue youngergen_card_val() { return youngergen_card; }
static CardValue verify_card_val() { return verify_card; }
// Scavenge support
void pre_scavenge(HeapWord* old_gen_bottom, uint active_workers);
// Scavenge contents of stripes with the given index.
@ -92,29 +84,15 @@ class PSCardTable: public CardTable {
bool addr_is_marked_imprecise(void *addr);
void set_card_newgen(void* addr) { CardValue* p = byte_for(addr); *p = verify_card; }
// Testers for entries
static bool card_is_dirty(int value) { return value == dirty_card; }
static bool card_is_newgen(int value) { return value == youngergen_card; }
static bool card_is_clean(int value) { return value == clean_card; }
static bool card_is_verify(int value) { return value == verify_card; }
// Card marking
void inline_write_ref_field_gc(void* field) {
CardValue* byte = byte_for(field);
*byte = youngergen_card;
*byte = dirty_card_val();
}
// ReduceInitialCardMarks support
bool is_in_young(const void* p) const override;
#ifdef ASSERT
bool is_valid_card_address(CardValue* addr) {
return (addr >= _byte_map) && (addr < _byte_map + _byte_map_size);
}
#endif // ASSERT
// Verification
void verify_all_young_refs_imprecise();
};