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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,
35 gboolean mod_union, SgenGrayQueue *queue) MONO_INTERNAL;
37 gboolean sgen_card_table_get_card_data (guint8 *dest, mword address, mword cards) MONO_INTERNAL;
39 void sgen_card_table_init (SgenRemeberedSet *remset) MONO_INTERNAL;
41 /*How many bytes a single card covers*/
44 /* How many bits of the address space is covered by the card table.
45 * If this value is smaller than the number of address bits, card aliasing is required.
47 #define CARD_TABLE_BITS 32
49 #define CARD_SIZE_IN_BYTES (1 << CARD_BITS)
50 #define CARD_COUNT_BITS (CARD_TABLE_BITS - CARD_BITS)
51 #define CARD_COUNT_IN_BYTES (1 << CARD_COUNT_BITS)
52 #define CARD_MASK ((1 << CARD_COUNT_BITS) - 1)
54 #if SIZEOF_VOID_P * 8 > CARD_TABLE_BITS
55 #define SGEN_HAVE_OVERLAPPING_CARDS 1
58 extern guint8 *sgen_cardtable MONO_INTERNAL;
61 #ifdef SGEN_HAVE_OVERLAPPING_CARDS
64 sgen_card_table_get_card_address (mword address)
66 return sgen_cardtable + ((address >> CARD_BITS) & CARD_MASK);
69 extern guint8 *sgen_shadow_cardtable MONO_INTERNAL;
72 sgen_card_table_get_shadow_card_address (mword address)
74 return sgen_shadow_cardtable + ((address >> CARD_BITS) & CARD_MASK);
77 static inline gboolean
78 sgen_card_table_card_begin_scanning (mword address)
80 return *sgen_card_table_get_shadow_card_address (address) != 0;
84 sgen_card_table_prepare_card_for_scanning (guint8 *card)
88 #define sgen_card_table_get_card_scan_address sgen_card_table_get_shadow_card_address
93 sgen_card_table_get_card_address (mword address)
95 return sgen_cardtable + (address >> CARD_BITS);
98 static inline gboolean
99 sgen_card_table_card_begin_scanning (mword address)
101 guint8 *card = sgen_card_table_get_card_address (address);
102 gboolean res = *card;
108 sgen_card_table_prepare_card_for_scanning (guint8 *card)
113 #define sgen_card_table_get_card_scan_address sgen_card_table_get_card_address
117 static inline gboolean
118 sgen_card_table_address_is_marked (mword address)
120 return *sgen_card_table_get_card_address (address) != 0;
124 sgen_card_table_mark_address (mword address)
126 *sgen_card_table_get_card_address (address) = 1;
129 #else /*if SGEN_HAVE_CARDTABLE */
132 sgen_card_table_mark_address (mword address)
134 g_assert_not_reached ();
138 sgen_card_table_mark_range (mword address, mword size)
140 g_assert_not_reached ();
143 #define sgen_card_table_address_is_marked(p) FALSE
144 #define sgen_card_table_init(p)
147 mono_gc_get_card_table (int *shift_bits, gpointer *mask)