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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef GCH | |
4 | #define GCH | |
16d35552 | 5 | /* Copyright (C) 1995, 96, 98, 99, 2000 Free Software Foundation, Inc. |
0f2d19dd JB |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
19 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
20 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
21 | * |
22 | * As a special exception, the Free Software Foundation gives permission | |
23 | * for additional uses of the text contained in its release of GUILE. | |
24 | * | |
25 | * The exception is that, if you link the GUILE library with other files | |
26 | * to produce an executable, this does not by itself cause the | |
27 | * resulting executable to be covered by the GNU General Public License. | |
28 | * Your use of that executable is in no way restricted on account of | |
29 | * linking the GUILE library code into it. | |
30 | * | |
31 | * This exception does not however invalidate any other reasons why | |
32 | * the executable file might be covered by the GNU General Public License. | |
33 | * | |
34 | * This exception applies only to the code released by the | |
35 | * Free Software Foundation under the name GUILE. If you copy | |
36 | * code from other Free Software Foundation releases into a copy of | |
37 | * GUILE, as the General Public License permits, the exception does | |
38 | * not apply to the code that you add in this way. To avoid misleading | |
39 | * anyone as to the status of such modified files, you must delete | |
40 | * this exception notice from them. | |
41 | * | |
42 | * If you write modifications of your own for GUILE, it is your choice | |
43 | * whether to permit this exception to apply to your modifications. | |
82892bed | 44 | * If you do not wish that, delete this exception notice. */ |
d3a6bc94 GB |
45 | |
46 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
47 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
0f2d19dd JB |
48 | \f |
49 | ||
b4309c3c | 50 | #include "libguile/__scm.h" |
0f2d19dd JB |
51 | \f |
52 | ||
f1267706 | 53 | #define SCM_FREEP(x) (SCM_NIMP(x) && SCM_UNPACK_CAR (x)==scm_tc_free_cell) |
0f2d19dd JB |
54 | #define SCM_NFREEP(x) (!SCM_FREEP(x)) |
55 | ||
79e3f9e2 MD |
56 | /* 1. This shouldn't be used on immediates. |
57 | 2. It thinks that subrs are always unmarked (harmless). */ | |
f1267706 | 58 | #define SCM_MARKEDP(x) ((SCM_UNPACK_CAR (x) & 5) == 5 \ |
79e3f9e2 MD |
59 | ? SCM_GC8MARKP(x) \ |
60 | : SCM_GCMARKP(x)) | |
61 | #define SCM_NMARKEDP(x) (!SCM_MARKEDP(x)) | |
62 | ||
0f2d19dd JB |
63 | extern struct scm_heap_seg_data *scm_heap_table; |
64 | extern int scm_n_heap_segs; | |
65 | extern int scm_take_stdin; | |
66 | extern int scm_block_gc; | |
67 | extern int scm_gc_heap_lock; | |
68 | \f | |
69 | ||
bb6df2ee MD |
70 | typedef struct scm_freelist_t { |
71 | SCM cells; | |
4a4c9785 MD |
72 | #ifdef GUILE_NEW_GC_SCHEME |
73 | int n_objects; | |
74 | /* a list of freelists, each of size gc_trigger, | |
75 | except the last one which may be shorter */ | |
76 | SCM clusters; | |
77 | SCM *clustertail; | |
78 | /* GC trigger */ | |
79 | int triggeredp; | |
dd45c0df MD |
80 | /* minimum number of objects allocated before GC is triggered and |
81 | * cluster size. These two concepts should be divorced when we go | |
82 | * to POSIX threads. | |
83 | */ | |
4a4c9785 MD |
84 | int gc_trigger; |
85 | #endif | |
bb6df2ee MD |
86 | /* number of cells per object on this list */ |
87 | int span; | |
88 | /* number of collected cells during last GC */ | |
89 | int collected; | |
90 | /* total number of cells in heap segments | |
91 | * belonging to this list. | |
92 | */ | |
93 | int heap_size; | |
94 | } scm_freelist_t; | |
0f2d19dd | 95 | |
15e9d186 | 96 | extern unsigned long scm_heap_size; |
0f2d19dd | 97 | extern SCM_CELLPTR scm_heap_org; |
4a4c9785 MD |
98 | #ifdef GUILE_NEW_GC_SCHEME |
99 | extern SCM scm_freelist; | |
100 | extern scm_freelist_t scm_master_freelist; | |
101 | extern SCM scm_freelist2; | |
102 | extern scm_freelist_t scm_master_freelist2; | |
103 | #else | |
bb6df2ee MD |
104 | extern scm_freelist_t scm_freelist; |
105 | extern scm_freelist_t scm_freelist2; | |
4a4c9785 | 106 | #endif |
0f2d19dd JB |
107 | extern unsigned long scm_gc_cells_collected; |
108 | extern unsigned long scm_gc_malloc_collected; | |
109 | extern unsigned long scm_gc_ports_collected; | |
110 | extern unsigned long scm_cells_allocated; | |
a5c314c8 | 111 | extern long scm_mallocated; |
15e9d186 | 112 | extern unsigned long scm_mtrigger; |
0f2d19dd | 113 | |
bb2c57fa | 114 | #if defined (GUILE_DEBUG) || defined (GUILE_DEBUG_FREELIST) |
25748c78 | 115 | extern SCM scm_map_free_list (void); |
5384bc5b | 116 | extern SCM scm_free_list_length (void); |
bb2c57fa MD |
117 | #endif |
118 | #ifdef GUILE_DEBUG_FREELIST | |
f2333166 | 119 | extern SCM scm_debug_newcell (void); |
16d35552 | 120 | extern SCM scm_debug_newcell2 (void); |
25748c78 | 121 | extern SCM scm_gc_set_debug_check_freelist_x (SCM flag); |
88256b2e JB |
122 | #endif |
123 | ||
0f2d19dd | 124 | \f |
0f2d19dd | 125 | |
8163d1e4 | 126 | extern SCM scm_object_address (SCM obj); |
fe1a46f0 JB |
127 | extern SCM scm_unhash_name (SCM name); |
128 | extern SCM scm_gc_stats (void); | |
3eeba8d4 | 129 | extern void scm_gc_start (const char *what); |
fe1a46f0 JB |
130 | extern void scm_gc_end (void); |
131 | extern SCM scm_gc (void); | |
bb6df2ee | 132 | extern void scm_gc_for_alloc (scm_freelist_t *freelistp); |
4a4c9785 MD |
133 | #ifdef GUILE_NEW_GC_SCHEME |
134 | extern SCM scm_gc_for_newcell (scm_freelist_t *master, SCM *freelist); | |
135 | #else | |
bb6df2ee | 136 | extern SCM scm_gc_for_newcell (scm_freelist_t *freelistp); |
4a4c9785 | 137 | #endif |
3eeba8d4 | 138 | extern void scm_igc (const char *what); |
fe1a46f0 JB |
139 | extern void scm_gc_mark (SCM p); |
140 | extern void scm_mark_locations (SCM_STACKITEM x[], scm_sizet n); | |
141 | extern int scm_cellp (SCM value); | |
142 | extern void scm_gc_sweep (void); | |
07806695 JB |
143 | extern void * scm_must_malloc (scm_sizet len, const char *what); |
144 | extern void * scm_must_realloc (void *where, | |
fe1a46f0 | 145 | scm_sizet olen, scm_sizet len, |
3eeba8d4 | 146 | const char *what); |
fe1a46f0 | 147 | extern void scm_done_malloc (long size); |
07806695 | 148 | extern void scm_must_free (void *obj); |
fe1a46f0 JB |
149 | extern void scm_remember (SCM * ptr); |
150 | extern SCM scm_return_first (SCM elt, ...); | |
41b0806d | 151 | extern int scm_return_first_int (int x, ...); |
fe1a46f0 JB |
152 | extern SCM scm_permanent_object (SCM obj); |
153 | extern SCM scm_protect_object (SCM obj); | |
154 | extern SCM scm_unprotect_object (SCM obj); | |
4a4c9785 | 155 | #ifdef GUILE_NEW_GC_SCHEME |
dd45c0df MD |
156 | extern int scm_init_storage (scm_sizet init_heap_size, int trig, |
157 | scm_sizet init_heap2_size, int trig2); | |
4a4c9785 | 158 | #else |
16d35552 MD |
159 | extern int scm_init_storage (scm_sizet init_heap_size, |
160 | scm_sizet init_heap2_size); | |
4a4c9785 | 161 | #endif |
fe1a46f0 | 162 | extern void scm_init_gc (void); |
0f2d19dd | 163 | #endif /* GCH */ |