2 * Copyright 2001-2003 Ximian, Inc
3 * Copyright 2003-2010 Novell, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
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.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 extern long long stat_scan_object_called_nursery;
26 #if defined(SGEN_SIMPLE_NURSERY)
27 #define SERIAL_SCAN_OBJECT simple_nursery_serial_scan_object
28 #define SERIAL_SCAN_VTYPE simple_nursery_serial_scan_vtype
29 #define PARALLEL_SCAN_OBJECT simple_nursery_parallel_scan_object
30 #define PARALLEL_SCAN_VTYPE simple_nursery_parallel_scan_vtype
32 #elif defined (SGEN_SPLIT_NURSERY)
33 #define SERIAL_SCAN_OBJECT split_nursery_serial_scan_object
34 #define SERIAL_SCAN_VTYPE split_nursery_serial_scan_vtype
35 #define PARALLEL_SCAN_OBJECT split_nursery_parallel_scan_object
36 #define PARALLEL_SCAN_VTYPE split_nursery_parallel_scan_vtype
39 #error "Please define GC_CONF_NAME"
43 #define HANDLE_PTR(ptr,obj) do { \
44 void *__old = *(ptr); \
47 PARALLEL_COPY_OBJECT ((ptr), queue); \
49 SGEN_COND_LOG (9, __old != __copy, "Overwrote field at %p with %p (was: %p)", (ptr), *(ptr), __old); \
50 if (G_UNLIKELY (sgen_ptr_in_nursery (__copy) && !sgen_ptr_in_nursery ((ptr)))) \
51 sgen_add_to_global_remset ((ptr)); \
56 * Scan the object pointed to by @start for references to
57 * other objects between @from_start and @from_end and copy
58 * them to the gray_objects area.
61 PARALLEL_SCAN_OBJECT (char *start, SgenGrayQueue *queue)
63 #include "sgen-scan-object.h"
65 HEAVY_STAT (++stat_scan_object_called_nursery);
71 * Scan the valuetype pointed to by START, described by DESC for references to
72 * other objects between @from_start and @from_end and copy them to the gray_objects area.
73 * Returns a pointer to the end of the object.
76 PARALLEL_SCAN_VTYPE (char *start, mword desc, SgenGrayQueue *queue)
78 /* The descriptors include info about the MonoObject header as well */
79 start -= sizeof (MonoObject);
81 #define SCAN_OBJECT_NOVTABLE
82 #include "sgen-scan-object.h"
85 #ifdef SGEN_SIMPLE_NURSERY
86 #define NEEDS_REMSET_COND(ptr) (__copy == __old && !sgen_ptr_in_nursery ((ptr)))
88 #define NEEDS_REMSET_COND(ptr) (sgen_ptr_in_nursery (__copy) && !sgen_ptr_in_nursery ((ptr)))
92 /* Global remsets are handled in SERIAL_COPY_OBJECT_FROM_OBJ */
93 #define HANDLE_PTR(ptr,obj) do { \
94 void *__old = *(ptr); \
97 SERIAL_COPY_OBJECT ((ptr), queue); \
99 if (G_UNLIKELY (NEEDS_REMSET_COND(ptr))) \
100 sgen_add_to_global_remset ((ptr)); \
101 SGEN_COND_LOG (9, __old != *(ptr), "Overwrote field at %p with %p (was: %p)", (ptr), *(ptr), __old); \
106 SERIAL_SCAN_OBJECT (char *start, SgenGrayQueue *queue)
108 #include "sgen-scan-object.h"
110 HEAVY_STAT (++stat_scan_object_called_nursery);
114 SERIAL_SCAN_VTYPE (char *start, mword desc, SgenGrayQueue *queue)
116 /* The descriptors include info about the MonoObject header as well */
117 start -= sizeof (MonoObject);
119 #define SCAN_OBJECT_NOVTABLE
120 #include "sgen-scan-object.h"
123 #define FILL_MINOR_COLLECTOR_SCAN_OBJECT(collector) do { \
124 (collector)->parallel_ops.scan_object = PARALLEL_SCAN_OBJECT; \
125 (collector)->parallel_ops.scan_vtype = PARALLEL_SCAN_VTYPE; \
126 (collector)->serial_ops.scan_object = SERIAL_SCAN_OBJECT; \
127 (collector)->serial_ops.scan_vtype = SERIAL_SCAN_VTYPE; \