1.1 --- a/src/share/vm/utilities/bitMap.hpp Wed Jul 03 20:04:13 2019 +0800
1.2 +++ b/src/share/vm/utilities/bitMap.hpp Wed Jul 03 20:42:37 2019 +0800
1.3 @@ -56,6 +56,10 @@
1.4 // the bitmap appropriately if needed using factor-of-two expansion.
1.5 void at_put_grow(idx_t index, bool value);
1.6
1.7 + // Threshold for performing small range operation, even when large range
1.8 + // operation was requested. Measured in words.
1.9 + static const size_t small_range_words = 32;
1.10 +
1.11 protected:
1.12 // Return the position of bit within the word that contains it (e.g., if
1.13 // bitmap words are 32 bits, return a number 0 <= n <= 31).
1.14 @@ -97,6 +101,8 @@
1.15 void set_large_range_of_words (idx_t beg, idx_t end);
1.16 void clear_large_range_of_words (idx_t beg, idx_t end);
1.17
1.18 + static bool is_small_range_of_words(idx_t beg_full_word, idx_t end_full_word);
1.19 +
1.20 // The index of the first full word in a range.
1.21 idx_t word_index_round_up(idx_t bit) const;
1.22
