macosx-10.10.1/libauto-186/WriteBarrier.h

50         void           *_base;                              // base address of managed range
70         WriteBarrier(void *base, void *address, const usword_t size, const usword_t protect = 0)
71             : Range(address, size), _base(base), _protect(protect)
89         // Return the write barrier card index for the specified address.
91         inline const usword_t card_index(void *address) const {
92             uintptr_t normalized = (uintptr_t)address - (uintptr_t)_base;
102         // Returns true if the specified address is managed by this write-barrier.
104         inline bool contains_card(void *address) {
105             usword_t i = card_index(address);
113         // Return the base address of the range managed by the specified card index.
123         inline bool is_card_marked(usword_t i) { return ((unsigned char *)address())[i] != card_unmarked; }
132             ((unsigned char *)address())[i] = card_marked;
155         inline bool is_card_marked(void *address) {
156             usword_t i = card_index(address);
164         // Mark the write barrier card for the specified address.
166         inline void mark_card(void *address) {
167             const usword_t i = card_index(address);
175         // Mark the write barrier cards corresponding to the specified address range.
177         inline void mark_cards(void *address, const usword_t size) {
178             usword_t i = card_index(address);
179             const usword_t j = card_index(displace(address, size - 1));
199         void scan_marked_ranges(void *address, const usword_t size, write_barrier_scanner_t scanner);
200         void scan_marked_ranges(void *address, const usword_t size, void (*scanner) (const Range&, WriteBarrier*, void*), void *arg);
208         bool range_has_marked_cards(void *address, const usword_t size);