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24 #ifndef __MONO_SGEN_CARD_TABLE_INLINES_H__
25 #define __MONO_SGEN_CARD_TABLE_INLINES_H__
27 void sgen_card_table_reset_region (mword start, mword end);
28 void* sgen_card_table_align_pointer (void *ptr);
29 void sgen_card_table_mark_range (mword address, mword size);
30 void sgen_cardtable_scan_object (char *obj, mword obj_size, guint8 *cards,
31 gboolean mod_union, SgenGrayQueue *queue);
33 gboolean sgen_card_table_get_card_data (guint8 *dest, mword address, mword cards);
35 guint8* sgen_card_table_update_mod_union_from_cards (guint8 *dest, guint8 *start_card, size_t num_cards);
36 guint8* sgen_card_table_update_mod_union (guint8 *dest, char *obj, mword obj_size, size_t *out_num_cards);
38 void sgen_card_table_init (SgenRememberedSet *remset);
40 /*How many bytes a single card covers*/
43 /* How many bits of the address space is covered by the card table.
44 * If this value is smaller than the number of address bits, card aliasing is required.
46 #define CARD_TABLE_BITS 32
48 #define CARD_SIZE_IN_BYTES (1 << CARD_BITS)
49 #define CARD_COUNT_BITS (CARD_TABLE_BITS - CARD_BITS)
50 #define CARD_COUNT_IN_BYTES (1 << CARD_COUNT_BITS)
51 #define CARD_MASK ((1 << CARD_COUNT_BITS) - 1)
53 #if SIZEOF_VOID_P * 8 > CARD_TABLE_BITS
54 #define SGEN_HAVE_OVERLAPPING_CARDS 1
57 extern guint8 *sgen_cardtable;
60 #ifdef SGEN_HAVE_OVERLAPPING_CARDS
63 sgen_card_table_get_card_address (mword address)
65 return sgen_cardtable + ((address >> CARD_BITS) & CARD_MASK);
68 extern guint8 *sgen_shadow_cardtable;
71 sgen_card_table_get_shadow_card_address (mword address)
73 return sgen_shadow_cardtable + ((address >> CARD_BITS) & CARD_MASK);
76 static inline gboolean
77 sgen_card_table_card_begin_scanning (mword address)
79 return *sgen_card_table_get_shadow_card_address (address) != 0;
83 sgen_card_table_prepare_card_for_scanning (guint8 *card)
87 #define sgen_card_table_get_card_scan_address sgen_card_table_get_shadow_card_address
92 sgen_card_table_get_card_address (mword address)
94 return sgen_cardtable + (address >> CARD_BITS);
97 static inline gboolean
98 sgen_card_table_card_begin_scanning (mword address)
100 guint8 *card = sgen_card_table_get_card_address (address);
101 gboolean res = *card;
107 sgen_card_table_prepare_card_for_scanning (guint8 *card)
112 #define sgen_card_table_get_card_scan_address sgen_card_table_get_card_address
116 static inline gboolean
117 sgen_card_table_address_is_marked (mword address)
119 return *sgen_card_table_get_card_address (address) != 0;
123 sgen_card_table_mark_address (mword address)
125 *sgen_card_table_get_card_address (address) = 1;