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8277372: Add getters for BOT and card table members

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Reviewed-by: tschatzl, sjohanss, ayang
This commit is contained in:
Vishal Chand 2021-12-06 15:28:20 +00:00 • committed by Thomas Schatzl
parent 7c6f57fcb1
commit adf39522c1
40 changed files with 205 additions and 176 deletions
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28
src/hotspot/share/gc/shared/cardTable.hpp
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@ -111,6 +111,11 @@ protected:
// a word's worth (row) of clean card values
static const intptr_t clean_card_row = (intptr_t)(-1);
// CardTable entry size
static uint _card_shift;
static uint _card_size;
static uint _card_size_in_words;
public:
CardTable(MemRegion whole_heap);
virtual ~CardTable();
@ -133,8 +138,8 @@ public:
// in, um, words.
inline size_t cards_required(size_t covered_words) {
// Add one for a guard card, used to detect errors.
const size_t words = align_up(covered_words, card_size_in_words);
return words / card_size_in_words + 1;
const size_t words = align_up(covered_words, _card_size_in_words);
return words / _card_size_in_words + 1;
}
// Dirty the bytes corresponding to "mr" (not all of which must be
@ -157,7 +162,7 @@ public:
"Attempt to access p = " PTR_FORMAT " out of bounds of "
" card marking array's _whole_heap = [" PTR_FORMAT "," PTR_FORMAT ")",
p2i(p), p2i(_whole_heap.start()), p2i(_whole_heap.end()));
CardValue* result = &_byte_map_base[uintptr_t(p) >> card_shift];
CardValue* result = &_byte_map_base[uintptr_t(p) >> _card_shift];
assert(result >= _byte_map && result < _byte_map + _byte_map_size,
"out of bounds accessor for card marking array");
return result;
@ -189,7 +194,7 @@ public:
" _byte_map: " PTR_FORMAT " _byte_map + _byte_map_size: " PTR_FORMAT,
p2i(p), p2i(_byte_map), p2i(_byte_map + _byte_map_size));
size_t delta = pointer_delta(p, _byte_map_base, sizeof(CardValue));
HeapWord* result = (HeapWord*) (delta << card_shift);
HeapWord* result = (HeapWord*) (delta << _card_shift);
assert(_whole_heap.contains(result),
"Returning result = " PTR_FORMAT " out of bounds of "
" card marking array's _whole_heap = [" PTR_FORMAT "," PTR_FORMAT ")",
@ -228,10 +233,17 @@ public:
MemRegion dirty_card_range_after_reset(MemRegion mr, bool reset,
int reset_val);
// CardTable entry size
static uint card_shift;
static uint card_size;
static uint card_size_in_words;
static uint card_shift() {
return _card_shift;
}
static uint card_size() {
return _card_size;
}
static uint card_size_in_words() {
return _card_size_in_words;
}
static constexpr CardValue clean_card_val() { return clean_card; }
static constexpr CardValue dirty_card_val() { return dirty_card; }