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8276548: Use range based visitor for Howl-Full cards #6230

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@@ -370,9 +370,11 @@ class G1RemSetScanState : public CHeapObj<mtGC> {

void set_chunk_range_dirty(size_t const region_card_idx, size_t const card_length) {
size_t chunk_idx = region_card_idx >> _scan_chunks_shift;
size_t const num_chunks = (card_length + scan_chunk_size_in_cards() - 1) >> _scan_chunks_shift;
for (uint i = 0; i < num_chunks; i++) {
_region_scan_chunks[chunk_idx++] = true;
// Make sure that all chunks that contain the range are marked. Calculate the
// chunk of the last card that is actually marked.
size_t const end_chunk = (region_card_idx + card_length - 1) >> _scan_chunks_shift;
for (; chunk_idx <= end_chunk; chunk_idx++) {
_region_scan_chunks[chunk_idx] = true;
}
}