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ba72912a » lauras
2010-06-08 gcc/ada:
1 /* Garbage collection for the GNU compiler. Internal definitions
2 for ggc-*.c and stringpool.c.
3
4 Copyright (C) 2009, 2010 Free Software Foundation, Inc.
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
12
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
21
22 #ifndef GCC_GGC_INTERNAL_H
23 #define GCC_GGC_INTERNAL_H
24
25 #include "ggc.h"
26
27 /* Call ggc_set_mark on all the roots. */
28 extern void ggc_mark_roots (void);
29
30 /* Stringpool. */
31
32 /* Mark the entries in the string pool. */
33 extern void ggc_mark_stringpool (void);
34
35 /* Purge the entries in the string pool. */
36 extern void ggc_purge_stringpool (void);
37
38 /* Save and restore the string pool entries for PCH. */
39
40 extern void gt_pch_save_stringpool (void);
41 extern void gt_pch_fixup_stringpool (void);
42 extern void gt_pch_restore_stringpool (void);
43
44 /* PCH and GGC handling for strings, mostly trivial. */
45 extern void gt_pch_p_S (void *, void *, gt_pointer_operator, void *);
46
47 /* PCH. */
48
49 struct ggc_pch_data;
50
51 /* Return a new ggc_pch_data structure. */
52 extern struct ggc_pch_data *init_ggc_pch (void);
53
54 /* The second parameter and third parameters give the address and size
55 of an object. Update the ggc_pch_data structure with as much of
56 that information as is necessary. The bool argument should be true
57 if the object is a string. */
58 extern void ggc_pch_count_object (struct ggc_pch_data *, void *, size_t, bool,
59 enum gt_types_enum);
60
61 /* Return the total size of the data to be written to hold all
62 the objects previously passed to ggc_pch_count_object. */
63 extern size_t ggc_pch_total_size (struct ggc_pch_data *);
64
65 /* The objects, when read, will most likely be at the address
66 in the second parameter. */
67 extern void ggc_pch_this_base (struct ggc_pch_data *, void *);
68
69 /* Assuming that the objects really do end up at the address
70 passed to ggc_pch_this_base, return the address of this object.
71 The bool argument should be true if the object is a string. */
72 extern char *ggc_pch_alloc_object (struct ggc_pch_data *, void *, size_t, bool,
73 enum gt_types_enum);
74
75 /* Write out any initial information required. */
76 extern void ggc_pch_prepare_write (struct ggc_pch_data *, FILE *);
77
78 /* Write out this object, including any padding. The last argument should be
79 true if the object is a string. */
80 extern void ggc_pch_write_object (struct ggc_pch_data *, FILE *, void *,
81 void *, size_t, bool);
82
83 /* All objects have been written, write out any final information
84 required. */
85 extern void ggc_pch_finish (struct ggc_pch_data *, FILE *);
86
87 /* A PCH file has just been read in at the address specified second
88 parameter. Set up the GC implementation for the new objects. */
89 extern void ggc_pch_read (FILE *, void *);
90
91
92 /* Allocation and collection. */
93
94 /* When set, ggc_collect will do collection. */
95 extern bool ggc_force_collect;
96
97 extern void ggc_record_overhead (size_t, size_t, void * MEM_STAT_DECL);
98
99 extern void ggc_free_overhead (void *);
100
101 extern void ggc_prune_overhead_list (void);
102
103 /* Return the number of bytes allocated at the indicated address. */
104 extern size_t ggc_get_size (const void *);
105
106
107 /* Statistics. */
108
109 /* This structure contains the statistics common to all collectors.
110 Particular collectors can extend this structure. */
111 typedef struct ggc_statistics
112 {
113 /* At present, we don't really gather any interesting statistics. */
114 int unused;
115 } ggc_statistics;
116
117 /* Used by the various collectors to gather and print statistics that
118 do not depend on the collector in use. */
119 extern void ggc_print_common_statistics (FILE *, ggc_statistics *);
120
121 #endif
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