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.
25 * Scans one object, using the OBJ_XXX macros. The start of the
26 * object must be given in the variable "char* start". Afterwards,
27 * "start" will point to the start of the next object, if the scanned
28 * object contained references. If not, the value of "start" should
29 * be considered undefined after executing this code.
31 * Modifiers (automatically undefined):
33 * SCAN_OBJECT_NOSCAN - if defined, don't actually scan the object,
34 * i.e. don't invoke the OBJ_XXX macros.
36 * SCAN_OBJECT_ACTION - is invoked after an object has been scanned.
37 * The object's start is "start", its length in bytes (including
38 * padding at the end) is "skip_size". "desc" is the object's GC
39 * descriptor. The action can use the macro
40 * "SCAN" to scan the object.
42 * SCAN_OBJECT_NOVTABLE - desc is provided by the includer, instead of
43 * vt. Complex arrays cannot not be scanned.
46 #ifndef SCAN_OBJECT_ACTION
47 #define SCAN_OBJECT_ACTION
51 #ifndef SCAN_OBJECT_NOVTABLE
55 vt = (GCVTable*)SGEN_LOAD_VTABLE (start);
56 //type = vt->desc & 0x7;
58 /* gcc should be smart enough to remove the bounds check, but it isn't:( */
62 case DESC_TYPE_RUN_LENGTH:
63 #define SCAN OBJ_RUN_LEN_FOREACH_PTR (desc, start)
64 #ifndef SCAN_OBJECT_NOSCAN
70 case DESC_TYPE_SMALL_BITMAP:
71 #define SCAN OBJ_BITMAP_FOREACH_PTR (desc, start)
72 #ifndef SCAN_OBJECT_NOSCAN
78 case DESC_TYPE_VECTOR:
79 #define SCAN OBJ_VECTOR_FOREACH_PTR (desc, start)
80 #ifndef SCAN_OBJECT_NOSCAN
86 case DESC_TYPE_LARGE_BITMAP:
87 #define SCAN OBJ_LARGE_BITMAP_FOREACH_PTR (desc, start)
88 #ifndef SCAN_OBJECT_NOSCAN
94 case DESC_TYPE_COMPLEX:
95 /* this is a complex object */
96 #define SCAN OBJ_COMPLEX_FOREACH_PTR (desc, start)
97 #ifndef SCAN_OBJECT_NOSCAN
103 #ifndef SCAN_OBJECT_NOVTABLE
104 case DESC_TYPE_COMPLEX_ARR:
105 /* this is an array of complex structs */
106 #define SCAN OBJ_COMPLEX_ARR_FOREACH_PTR (vt, start)
107 #ifndef SCAN_OBJECT_NOSCAN
114 case DESC_TYPE_COMPLEX_PTRFREE:
119 g_assert_not_reached ();
123 #undef SCAN_OBJECT_NOSCAN
124 #undef SCAN_OBJECT_ACTION
125 #undef SCAN_OBJECT_NOVTABLE