Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/utilities/bitMap.inline.hpp
src/share/vm/utilities/bitMap.inline.hpp
- changeset 5713
- 17deed6716af
- parent 3454
- 2e966d967c5c
- child 6198
- 55fb97c4c58d
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| 5712:f9b58dbeab91 | 5713:17deed6716af |
|---|---|
| 50 *word_addr(bit) &= ~bit_mask(bit); | 50 *word_addr(bit) &= ~bit_mask(bit); |
| 51 } | 51 } |
| 52 | 52 |
| 53 inline bool BitMap::par_set_bit(idx_t bit) { | 53 inline bool BitMap::par_set_bit(idx_t bit) { |
| 54 verify_index(bit); | 54 verify_index(bit); |
| 55 volatile idx_t* const addr = word_addr(bit); | 55 volatile bm_word_t* const addr = word_addr(bit); |
| 56 const idx_t mask = bit_mask(bit); | 56 const bm_word_t mask = bit_mask(bit); |
| 57 idx_t old_val = *addr; | 57 bm_word_t old_val = *addr; |
| 58 | 58 |
| 59 do { | 59 do { |
| 60 const idx_t new_val = old_val | mask; | 60 const bm_word_t new_val = old_val | mask; |
| 61 if (new_val == old_val) { | 61 if (new_val == old_val) { |
| 62 return false; // Someone else beat us to it. | 62 return false; // Someone else beat us to it. |
| 63 } | 63 } |
| 64 const idx_t cur_val = (idx_t) Atomic::cmpxchg_ptr((void*) new_val, | 64 const bm_word_t cur_val = (bm_word_t) Atomic::cmpxchg_ptr((void*) new_val, |
| 65 (volatile void*) addr, | 65 (volatile void*) addr, |
| 66 (void*) old_val); | 66 (void*) old_val); |
| 67 if (cur_val == old_val) { | 67 if (cur_val == old_val) { |
| 68 return true; // Success. | 68 return true; // Success. |
| 69 } | 69 } |
| 71 } while (true); | 71 } while (true); |
| 72 } | 72 } |
| 73 | 73 |
| 74 inline bool BitMap::par_clear_bit(idx_t bit) { | 74 inline bool BitMap::par_clear_bit(idx_t bit) { |
| 75 verify_index(bit); | 75 verify_index(bit); |
| 76 volatile idx_t* const addr = word_addr(bit); | 76 volatile bm_word_t* const addr = word_addr(bit); |
| 77 const idx_t mask = ~bit_mask(bit); | 77 const bm_word_t mask = ~bit_mask(bit); |
| 78 idx_t old_val = *addr; | 78 bm_word_t old_val = *addr; |
| 79 | 79 |
| 80 do { | 80 do { |
| 81 const idx_t new_val = old_val & mask; | 81 const bm_word_t new_val = old_val & mask; |
| 82 if (new_val == old_val) { | 82 if (new_val == old_val) { |
| 83 return false; // Someone else beat us to it. | 83 return false; // Someone else beat us to it. |
| 84 } | 84 } |
| 85 const idx_t cur_val = (idx_t) Atomic::cmpxchg_ptr((void*) new_val, | 85 const bm_word_t cur_val = (bm_word_t) Atomic::cmpxchg_ptr((void*) new_val, |
| 86 (volatile void*) addr, | 86 (volatile void*) addr, |
| 87 (void*) old_val); | 87 (void*) old_val); |
| 88 if (cur_val == old_val) { | 88 if (cur_val == old_val) { |
| 89 return true; // Success. | 89 return true; // Success. |
| 90 } | 90 } |
