2 * Copyright 2001-2003 Ximian, Inc
3 * Copyright 2003-2010 Novell, Inc.
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6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
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10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
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18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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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
;
37 void mono_sgen_card_table_finish_scan_remsets (void *start_nursery
, void *end_nursery
, SgenGrayQueue
*queue
) MONO_INTERNAL
;
38 void sgen_card_tables_collect_stats (gboolean begin
) MONO_INTERNAL
;
39 void mono_sgen_card_table_prepare_for_major_collection (void) MONO_INTERNAL
;
40 void sgen_card_table_init (void) MONO_INTERNAL
;
42 void mono_sgen_card_table_wbarrier_set_field (MonoObject
*obj
, gpointer field_ptr
, MonoObject
* value
) MONO_INTERNAL
;
43 void mono_sgen_card_table_wbarrier_set_arrayref (MonoArray
*arr
, gpointer slot_ptr
, MonoObject
* value
) MONO_INTERNAL
;
44 void mono_sgen_card_table_wbarrier_arrayref_copy (gpointer dest_ptr
, gpointer src_ptr
, int count
) MONO_INTERNAL
;
45 void mono_sgen_card_table_wbarrier_value_copy (gpointer dest
, gpointer src
, int count
, MonoClass
*klass
) MONO_INTERNAL
;
46 void mono_sgen_card_table_wbarrier_object_copy (MonoObject
* obj
, MonoObject
*src
) MONO_INTERNAL
;
47 void mono_sgen_card_table_wbarrier_generic_nostore (gpointer ptr
) MONO_INTERNAL
;
49 /*How many bytes a single card covers*/
52 /* How many bits of the address space is covered by the card table.
53 * If this value is smaller than the number of address bits, card aliasing is required.
55 #define CARD_TABLE_BITS 32
57 #define CARD_SIZE_IN_BYTES (1 << CARD_BITS)
58 #define CARD_COUNT_BITS (CARD_TABLE_BITS - CARD_BITS)
59 #define CARD_COUNT_IN_BYTES (1 << CARD_COUNT_BITS)
60 #define CARD_MASK ((1 << CARD_COUNT_BITS) - 1)
62 #if SIZEOF_VOID_P * 8 > CARD_TABLE_BITS
63 #define SGEN_HAVE_OVERLAPPING_CARDS 1
66 extern guint8
*sgen_cardtable MONO_INTERNAL
;
69 #ifdef SGEN_HAVE_OVERLAPPING_CARDS
72 sgen_card_table_get_card_address (mword address
)
74 return sgen_cardtable
+ ((address
>> CARD_BITS
) & CARD_MASK
);
77 extern guint8
*sgen_shadow_cardtable MONO_INTERNAL
;
80 sgen_card_table_get_shadow_card_address (mword address
)
82 return sgen_shadow_cardtable
+ ((address
>> CARD_BITS
) & CARD_MASK
);
85 static inline gboolean
86 sgen_card_table_card_begin_scanning (mword address
)
88 return *sgen_card_table_get_shadow_card_address (address
) != 0;
92 sgen_card_table_prepare_card_for_scanning (guint8
*card
)
96 #define sgen_card_table_get_card_scan_address sgen_card_table_get_shadow_card_address
100 static inline guint8
*
101 sgen_card_table_get_card_address (mword address
)
103 return sgen_cardtable
+ (address
>> CARD_BITS
);
106 static inline gboolean
107 sgen_card_table_card_begin_scanning (mword address
)
109 guint8
*card
= sgen_card_table_get_card_address (address
);
110 gboolean res
= *card
;
116 sgen_card_table_prepare_card_for_scanning (guint8
*card
)
121 #define sgen_card_table_get_card_scan_address sgen_card_table_get_card_address
125 static inline gboolean
126 sgen_card_table_address_is_marked (mword address
)
128 return *sgen_card_table_get_card_address (address
) != 0;
132 sgen_card_table_mark_address (mword address
)
134 *sgen_card_table_get_card_address (address
) = 1;
138 mono_sgen_card_table_record_pointer (gpointer address
)
140 *sgen_card_table_get_card_address ((mword
)address
) = 1;
143 #else /*if SGEN_HAVE_CARDTABLE */
146 sgen_card_table_mark_address (mword address
)
148 g_assert_not_reached ();
152 sgen_card_table_mark_range (mword address
, mword size
)
154 g_assert_not_reached ();
157 #define sgen_card_table_address_is_marked(p) FALSE
158 #define mono_sgen_card_table_scan_from_remsets(start,end,queue)
159 #define mono_sgen_card_table_prepare_for_major_collection()
160 #define sgen_card_table_init()
161 #define sgen_card_tables_collect_stats(begin)
164 mono_gc_get_card_table (int *shift_bits
, gpointer
*mask
)
170 mono_sgen_card_table_record_pointer (gpointer address
)
172 g_assert_not_reached ();