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24 #ifndef __MONO_SGEN_CARD_TABLE_INLINES_H__
25 #define __MONO_SGEN_CARD_TABLE_INLINES_H__
27 #define SGEN_HAVE_CARDTABLE 1
29 #ifdef SGEN_HAVE_CARDTABLE
31 void sgen_card_table_reset_region (mword start, mword end) MONO_INTERNAL;
32 void* sgen_card_table_align_pointer (void *ptr) MONO_INTERNAL;
33 void sgen_card_table_mark_range (mword address, mword size) MONO_INTERNAL;
34 void sgen_cardtable_scan_object (char *obj, mword obj_size, guint8 *cards, SgenGrayQueue *queue) MONO_INTERNAL;
36 gboolean sgen_card_table_get_card_data (guint8 *dest, mword address, mword cards) MONO_INTERNAL;
38 void sgen_card_table_init (SgenRemeberedSet *remset) MONO_INTERNAL;
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 MONO_INTERNAL;
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 MONO_INTERNAL;
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;
128 #else /*if SGEN_HAVE_CARDTABLE */
131 sgen_card_table_mark_address (mword address)
133 g_assert_not_reached ();
137 sgen_card_table_mark_range (mword address, mword size)
139 g_assert_not_reached ();
142 #define sgen_card_table_address_is_marked(p) FALSE
143 #define sgen_card_table_init(p)
146 mono_gc_get_card_table (int *shift_bits, gpointer *mask)