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0f2d19dd JB |
1 | /* classes: h_files */ |
2 | ||
61045190 DH |
3 | #ifndef SCM_GC_H |
4 | #define SCM_GC_H | |
5 | /* Copyright (C) 1995,1996,1998,1999,2000,2001 Free Software Foundation, Inc. | |
a00c95d9 | 6 | * |
0f2d19dd JB |
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. | |
a00c95d9 | 11 | * |
0f2d19dd JB |
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. | |
a00c95d9 | 16 | * |
0f2d19dd JB |
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" |
2549a709 | 51 | |
9b3e180c MD |
52 | #include "libguile/hooks.h" |
53 | ||
0f2d19dd JB |
54 | \f |
55 | ||
2549a709 DH |
56 | typedef struct scm_cell |
57 | { | |
e828cb75 DH |
58 | scm_bits_t word_0; |
59 | scm_bits_t word_1; | |
2549a709 DH |
60 | } scm_cell; |
61 | ||
62 | ||
63 | /* SCM_CELLPTR is a pointer to a cons cell which may be compared or | |
64 | * differenced. | |
65 | */ | |
56100716 | 66 | typedef scm_cell * SCM_CELLPTR; |
2549a709 DH |
67 | |
68 | ||
69 | /* Cray machines have pointers that are incremented once for each word, | |
70 | * rather than each byte, the 3 most significant bits encode the byte | |
71 | * within the word. The following macros deal with this by storing the | |
72 | * native Cray pointers like the ones that looks like scm expects. This | |
73 | * is done for any pointers that might appear in the car of a scm_cell, | |
e618c9a3 | 74 | * pointers to scm_vector elts, functions, &c are not munged. |
2549a709 DH |
75 | */ |
76 | #ifdef _UNICOS | |
076d6063 MD |
77 | # define SCM2PTR(x) ((SCM_CELLPTR) (SCM_UNPACK (x) >> 3)) |
78 | # define PTR2SCM(x) (SCM_PACK (((scm_bits_t) (x)) << 3)) | |
2549a709 | 79 | #else |
076d6063 MD |
80 | # define SCM2PTR(x) ((SCM_CELLPTR) (SCM_UNPACK (x))) |
81 | # define PTR2SCM(x) (SCM_PACK ((scm_bits_t) (x))) | |
2549a709 DH |
82 | #endif /* def _UNICOS */ |
83 | ||
e618c9a3 | 84 | #define SCM_GC_CARD_N_HEADER_CELLS 1 |
f91f77e6 | 85 | #define SCM_GC_CARD_N_CELLS 256 |
e618c9a3 ML |
86 | |
87 | #define SCM_GC_CARD_SIZE (SCM_GC_CARD_N_CELLS * sizeof (scm_cell)) | |
88 | #define SCM_GC_CARD_N_DATA_CELLS (SCM_GC_CARD_N_CELLS - SCM_GC_CARD_N_HEADER_CELLS) | |
89 | ||
90 | #define SCM_GC_CARD_BVEC_SIZE_IN_LIMBS \ | |
91 | ((SCM_GC_CARD_N_CELLS + SCM_C_BVEC_LIMB_BITS - 1) / SCM_C_BVEC_LIMB_BITS) | |
92 | ||
93 | #define SCM_GC_IN_CARD_HEADERP(x) \ | |
94 | SCM_PTR_LT ((scm_cell *) (x), SCM_GC_CELL_CARD (x) + SCM_GC_CARD_N_HEADER_CELLS) | |
95 | ||
96 | #define SCM_GC_CARD_BVEC(card) ((scm_c_bvec_limb_t *) ((card)->word_0)) | |
322ec19d ML |
97 | #define SCM_GC_SET_CARD_BVEC(card, bvec) \ |
98 | ((card)->word_0 = (scm_bits_t) (bvec)) | |
e618c9a3 ML |
99 | |
100 | #define SCM_GC_GET_CARD_FLAGS(card) ((long) ((card)->word_1)) | |
322ec19d ML |
101 | #define SCM_GC_SET_CARD_FLAGS(card, flags) \ |
102 | ((card)->word_1 = (scm_bits_t) (flags)) | |
103 | #define SCM_GC_CLR_CARD_FLAGS(card) (SCM_GC_SET_CARD_FLAGS (card, 0L)) | |
e618c9a3 ML |
104 | |
105 | #define SCM_GC_GET_CARD_FLAG(card, shift) (SCM_GC_GET_CARD_FLAGS (card) & (1L << (shift))) | |
322ec19d ML |
106 | #define SCM_GC_SET_CARD_FLAG(card, shift) \ |
107 | (SCM_GC_SET_CARD_FLAGS (card, SCM_GC_GET_CARD_FLAGS(card) | (1L << (shift)))) | |
108 | #define SCM_GC_CLR_CARD_FLAG(card, shift) \ | |
109 | (SCM_GC_SET_CARD_FLAGS (card, SCM_GC_GET_CARD_FLAGS(card) & ~(1L << (shift)))) | |
e618c9a3 ML |
110 | |
111 | #define SCM_GC_CARDF_DOUBLECELL 0 | |
112 | ||
113 | #define SCM_GC_CARD_DOUBLECELLP(card) SCM_GC_GET_CARD_FLAG (card, SCM_GC_CARDF_DOUBLECELL) | |
114 | #define SCM_GC_SET_CARD_DOUBLECELL(card) SCM_GC_SET_CARD_FLAG (card, SCM_GC_CARDF_DOUBLECELL) | |
115 | ||
116 | /* card addressing. for efficiency, cards are *always* aligned to | |
117 | SCM_GC_CARD_SIZE. */ | |
118 | ||
119 | #define SCM_GC_CARD_SIZE_MASK (SCM_GC_CARD_SIZE - 1) | |
120 | #define SCM_GC_CARD_ADDR_MASK (~SCM_GC_CARD_SIZE_MASK) | |
121 | ||
122 | #define SCM_GC_CELL_CARD(x) ((SCM_CELLPTR) ((long) (x) & SCM_GC_CARD_ADDR_MASK)) | |
123 | #define SCM_GC_CELL_SPAN(x) ((SCM_GC_CARD_DOUBLECELLP (SCM_GC_CELL_CARD (x))) ? 2 : 1) | |
124 | #define SCM_GC_CELL_OFFSET(x) (((long) (x) & SCM_GC_CARD_SIZE_MASK) >> SCM_CELL_SIZE_SHIFT) | |
125 | #define SCM_GC_CELL_BVEC(x) SCM_GC_CARD_BVEC (SCM_GC_CELL_CARD (x)) | |
126 | #define SCM_GC_CELL_GET_BIT(x) SCM_C_BVEC_GET (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x)) | |
127 | #define SCM_GC_CELL_SET_BIT(x) SCM_C_BVEC_SET (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x)) | |
128 | #define SCM_GC_CELL_CLR_BIT(x) SCM_C_BVEC_CLR (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x)) | |
129 | ||
130 | #define SCM_GC_CARD_UP(x) SCM_GC_CELL_CARD ((char *) (x) + SCM_GC_CARD_SIZE - 1) | |
131 | #define SCM_GC_CARD_DOWN SCM_GC_CELL_CARD | |
132 | ||
133 | /* low level bit banging aids */ | |
134 | ||
135 | typedef unsigned long scm_c_bvec_limb_t; | |
136 | ||
137 | #if (SIZEOF_LONG == 8) | |
138 | # define SCM_C_BVEC_LIMB_BITS 64 | |
139 | # define SCM_C_BVEC_OFFSET_SHIFT 6 | |
140 | # define SCM_C_BVEC_POS_MASK 63 | |
141 | # define SCM_CELL_SIZE_SHIFT 4 | |
142 | #else | |
143 | # define SCM_C_BVEC_LIMB_BITS 32 | |
144 | # define SCM_C_BVEC_OFFSET_SHIFT 5 | |
145 | # define SCM_C_BVEC_POS_MASK 31 | |
146 | # define SCM_CELL_SIZE_SHIFT 3 | |
147 | #endif | |
148 | ||
149 | #define SCM_C_BVEC_OFFSET(pos) (pos >> SCM_C_BVEC_OFFSET_SHIFT) | |
150 | ||
151 | #define SCM_C_BVEC_GET(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] & (1L << (pos & SCM_C_BVEC_POS_MASK))) | |
152 | #define SCM_C_BVEC_SET(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] |= (1L << (pos & SCM_C_BVEC_POS_MASK))) | |
153 | #define SCM_C_BVEC_CLR(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] &= ~(1L << (pos & SCM_C_BVEC_POS_MASK))) | |
154 | ||
155 | #define SCM_C_BVEC_BITS2BYTES(bits) \ | |
156 | (sizeof (scm_c_bvec_limb_t) * ((((bits) & SCM_C_BVEC_POS_MASK) ? 1L : 0L) + SCM_C_BVEC_OFFSET (bits))) | |
157 | ||
158 | #define SCM_C_BVEC_SET_BYTES(bvec, bytes) (memset (bvec, 0xff, bytes)) | |
159 | #define SCM_C_BVEC_SET_ALL_BITS(bvec, bits) SCM_C_BVEC_SET_BYTES (bvec, SCM_C_BVEC_BITS2BYTES (bits)) | |
160 | ||
161 | #define SCM_C_BVEC_CLR_BYTES(bvec, bytes) (memset (bvec, 0, bytes)) | |
162 | #define SCM_C_BVEC_CLR_ALL_BITS(bvec, bits) SCM_C_BVEC_CLR_BYTES (bvec, SCM_C_BVEC_BITS2BYTES (bits)) | |
163 | ||
164 | /* testing and changing GC marks */ | |
165 | ||
166 | #define SCM_GCMARKP(x) SCM_GC_CELL_GET_BIT (x) | |
167 | #define SCM_SETGCMARK(x) SCM_GC_CELL_SET_BIT (x) | |
168 | #define SCM_CLRGCMARK(x) SCM_GC_CELL_CLR_BIT (x) | |
169 | ||
2549a709 DH |
170 | /* Low level cell data accessing macros: |
171 | */ | |
172 | ||
406c7d90 DH |
173 | #if (SCM_DEBUG_CELL_ACCESSES == 1) |
174 | # define SCM_VALIDATE_CELL(cell, expr) (scm_assert_cell_valid (cell), (expr)) | |
708cb87c | 175 | #else |
61045190 | 176 | # define SCM_VALIDATE_CELL(cell, expr) (expr) |
708cb87c | 177 | #endif |
46d53380 | 178 | |
f706a58b DH |
179 | #define SCM_CELL_WORD(x, n) \ |
180 | SCM_VALIDATE_CELL ((x), ((const scm_bits_t *) SCM2PTR (x)) [n]) | |
2549a709 DH |
181 | #define SCM_CELL_WORD_0(x) SCM_CELL_WORD (x, 0) |
182 | #define SCM_CELL_WORD_1(x) SCM_CELL_WORD (x, 1) | |
183 | #define SCM_CELL_WORD_2(x) SCM_CELL_WORD (x, 2) | |
184 | #define SCM_CELL_WORD_3(x) SCM_CELL_WORD (x, 3) | |
185 | ||
f706a58b DH |
186 | #define SCM_CELL_OBJECT(x, n) \ |
187 | SCM_VALIDATE_CELL ((x), SCM_PACK (((const scm_bits_t *) SCM2PTR (x)) [n])) | |
2549a709 DH |
188 | #define SCM_CELL_OBJECT_0(x) SCM_CELL_OBJECT (x, 0) |
189 | #define SCM_CELL_OBJECT_1(x) SCM_CELL_OBJECT (x, 1) | |
190 | #define SCM_CELL_OBJECT_2(x) SCM_CELL_OBJECT (x, 2) | |
191 | #define SCM_CELL_OBJECT_3(x) SCM_CELL_OBJECT (x, 3) | |
192 | ||
f706a58b DH |
193 | #define SCM_SET_CELL_WORD(x, n, v) \ |
194 | SCM_VALIDATE_CELL ((x), ((scm_bits_t *) SCM2PTR (x)) [n] = (scm_bits_t) (v)) | |
2549a709 DH |
195 | #define SCM_SET_CELL_WORD_0(x, v) SCM_SET_CELL_WORD (x, 0, v) |
196 | #define SCM_SET_CELL_WORD_1(x, v) SCM_SET_CELL_WORD (x, 1, v) | |
197 | #define SCM_SET_CELL_WORD_2(x, v) SCM_SET_CELL_WORD (x, 2, v) | |
198 | #define SCM_SET_CELL_WORD_3(x, v) SCM_SET_CELL_WORD (x, 3, v) | |
199 | ||
f706a58b DH |
200 | #define SCM_SET_CELL_OBJECT(x, n, v) \ |
201 | SCM_VALIDATE_CELL ((x), ((scm_bits_t *) SCM2PTR (x)) [n] = SCM_UNPACK (v)) | |
2549a709 DH |
202 | #define SCM_SET_CELL_OBJECT_0(x, v) SCM_SET_CELL_OBJECT (x, 0, v) |
203 | #define SCM_SET_CELL_OBJECT_1(x, v) SCM_SET_CELL_OBJECT (x, 1, v) | |
204 | #define SCM_SET_CELL_OBJECT_2(x, v) SCM_SET_CELL_OBJECT (x, 2, v) | |
205 | #define SCM_SET_CELL_OBJECT_3(x, v) SCM_SET_CELL_OBJECT (x, 3, v) | |
206 | ||
207 | #define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x) | |
208 | #define SCM_SET_CELL_TYPE(x, t) SCM_SET_CELL_WORD_0 (x, t) | |
209 | ||
61045190 DH |
210 | |
211 | /* Except for the garbage collector, no part of guile should ever run over a | |
212 | * free cell. Thus, in debug mode the above macros report an error if they | |
213 | * are applied to a free cell. Since the garbage collector is allowed to | |
214 | * access free cells, it needs its own way to access cells which will not | |
215 | * result in errors when in debug mode. */ | |
216 | ||
217 | #define SCM_GC_CELL_TYPE(x) \ | |
218 | (((const scm_bits_t *) SCM2PTR (x)) [0]) | |
219 | ||
220 | ||
f706a58b DH |
221 | #define SCM_CELL_WORD_LOC(x, n) ((scm_bits_t *) & SCM_CELL_WORD (x, n)) |
222 | #define SCM_CARLOC(x) ((SCM *) SCM_CELL_WORD_LOC ((x), 0)) | |
223 | #define SCM_CDRLOC(x) ((SCM *) SCM_CELL_WORD_LOC ((x), 1)) | |
2549a709 DH |
224 | |
225 | ||
6ba93e5e DH |
226 | /* SCM_PTR_LT and friends define how to compare two SCM_CELLPTRs (which may |
227 | * point to cells in different heap segments). | |
2549a709 | 228 | */ |
6ba93e5e DH |
229 | #define SCM_PTR_LT(x, y) ((x) < (y)) |
230 | #define SCM_PTR_GT(x, y) (SCM_PTR_LT (y, x)) | |
2549a709 DH |
231 | #define SCM_PTR_LE(x, y) (!SCM_PTR_GT (x, y)) |
232 | #define SCM_PTR_GE(x, y) (!SCM_PTR_LT (x, y)) | |
233 | ||
234 | ||
2d67e390 DH |
235 | /* Freelists consist of linked cells where the type entry holds the value |
236 | * scm_tc_free_cell and the second entry holds a pointer to the next cell of | |
237 | * the freelist. Due to this structure, freelist cells are not cons cells | |
238 | * and thus may not be accessed using SCM_CAR and SCM_CDR. | |
239 | */ | |
240 | ||
3f5d82cd DH |
241 | #define SCM_FREE_CELL_P(x) \ |
242 | (!SCM_IMP (x) && (* (const scm_bits_t *) SCM2PTR (x) == scm_tc_free_cell)) | |
243 | #define SCM_FREE_CELL_CDR(x) \ | |
78a3503e | 244 | (SCM_PACK (((const scm_bits_t *) SCM2PTR (x)) [1])) |
3f5d82cd | 245 | #define SCM_SET_FREE_CELL_CDR(x, v) \ |
78a3503e | 246 | (((scm_bits_t *) SCM2PTR (x)) [1] = SCM_UNPACK (v)) |
3f5d82cd | 247 | |
61045190 DH |
248 | |
249 | #if (SCM_DEBUG_CELL_ACCESSES == 1) | |
250 | # define SCM_GC_SET_ALLOCATED(x) \ | |
251 | (((scm_bits_t *) SCM2PTR (x)) [0] = scm_tc16_allocated) | |
252 | #else | |
253 | # define SCM_GC_SET_ALLOCATED(x) | |
254 | #endif | |
255 | ||
2549a709 DH |
256 | #ifdef GUILE_DEBUG_FREELIST |
257 | #define SCM_NEWCELL(_into) do { _into = scm_debug_newcell (); } while (0) | |
258 | #define SCM_NEWCELL2(_into) do { _into = scm_debug_newcell2 (); } while (0) | |
259 | #else | |
2549a709 | 260 | /* When we introduce POSIX threads support, every thread will have |
3c8018e6 | 261 | a freelist of its own. */ |
2549a709 DH |
262 | #define SCM_NEWCELL(_into) \ |
263 | do { \ | |
7c33806a | 264 | if (SCM_NULLP (scm_freelist)) \ |
61045190 | 265 | { \ |
2549a709 DH |
266 | _into = scm_gc_for_newcell (&scm_master_freelist, \ |
267 | &scm_freelist); \ | |
61045190 DH |
268 | SCM_GC_SET_ALLOCATED (_into); \ |
269 | } \ | |
2549a709 DH |
270 | else \ |
271 | { \ | |
272 | _into = scm_freelist; \ | |
3f5d82cd | 273 | scm_freelist = SCM_FREE_CELL_CDR (scm_freelist); \ |
61045190 | 274 | SCM_GC_SET_ALLOCATED (_into); \ |
2549a709 DH |
275 | } \ |
276 | } while(0) | |
277 | #define SCM_NEWCELL2(_into) \ | |
278 | do { \ | |
7c33806a | 279 | if (SCM_NULLP (scm_freelist2)) \ |
61045190 | 280 | { \ |
2549a709 DH |
281 | _into = scm_gc_for_newcell (&scm_master_freelist2, \ |
282 | &scm_freelist2); \ | |
61045190 DH |
283 | SCM_GC_SET_ALLOCATED (_into); \ |
284 | } \ | |
2549a709 DH |
285 | else \ |
286 | { \ | |
287 | _into = scm_freelist2; \ | |
3f5d82cd | 288 | scm_freelist2 = SCM_FREE_CELL_CDR (scm_freelist2); \ |
61045190 | 289 | SCM_GC_SET_ALLOCATED (_into); \ |
2549a709 DH |
290 | } \ |
291 | } while(0) | |
2549a709 DH |
292 | #endif |
293 | ||
294 | ||
e618c9a3 | 295 | #define SCM_MARKEDP SCM_GCMARKP |
2d67e390 | 296 | #define SCM_NMARKEDP(x) (!SCM_MARKEDP (x)) |
79e3f9e2 | 297 | |
61045190 DH |
298 | #if (SCM_DEBUG_CELL_ACCESSES == 1) |
299 | extern scm_bits_t scm_tc16_allocated; | |
300 | extern unsigned int scm_debug_cell_accesses_p; | |
301 | #endif | |
302 | ||
a00c95d9 | 303 | extern struct scm_heap_seg_data_t *scm_heap_table; |
0f2d19dd | 304 | extern int scm_n_heap_segs; |
0f2d19dd JB |
305 | extern int scm_block_gc; |
306 | extern int scm_gc_heap_lock; | |
406c7d90 | 307 | extern unsigned int scm_gc_running_p; |
0f2d19dd JB |
308 | \f |
309 | ||
aeacfc8f MD |
310 | extern int scm_default_init_heap_size_1; |
311 | extern int scm_default_min_yield_1; | |
312 | extern int scm_default_init_heap_size_2; | |
313 | extern int scm_default_min_yield_2; | |
314 | extern int scm_default_max_segment_size; | |
315 | ||
4c48ba06 | 316 | extern scm_sizet scm_max_segment_size; |
0f2d19dd | 317 | extern SCM_CELLPTR scm_heap_org; |
4a4c9785 | 318 | extern SCM scm_freelist; |
a00c95d9 | 319 | extern struct scm_freelist_t scm_master_freelist; |
4a4c9785 | 320 | extern SCM scm_freelist2; |
a00c95d9 | 321 | extern struct scm_freelist_t scm_master_freelist2; |
0f2d19dd | 322 | extern unsigned long scm_gc_cells_collected; |
8b0d194f | 323 | extern unsigned long scm_gc_yield; |
0f2d19dd JB |
324 | extern unsigned long scm_gc_malloc_collected; |
325 | extern unsigned long scm_gc_ports_collected; | |
326 | extern unsigned long scm_cells_allocated; | |
a5c314c8 | 327 | extern long scm_mallocated; |
15e9d186 | 328 | extern unsigned long scm_mtrigger; |
0f2d19dd | 329 | |
9b3e180c MD |
330 | extern SCM scm_after_gc_hook; |
331 | ||
332 | extern scm_c_hook_t scm_before_gc_c_hook; | |
333 | extern scm_c_hook_t scm_before_mark_c_hook; | |
334 | extern scm_c_hook_t scm_before_sweep_c_hook; | |
335 | extern scm_c_hook_t scm_after_sweep_c_hook; | |
336 | extern scm_c_hook_t scm_after_gc_c_hook; | |
337 | ||
bb2c57fa | 338 | #if defined (GUILE_DEBUG) || defined (GUILE_DEBUG_FREELIST) |
25748c78 | 339 | extern SCM scm_map_free_list (void); |
5384bc5b | 340 | extern SCM scm_free_list_length (void); |
bb2c57fa MD |
341 | #endif |
342 | #ifdef GUILE_DEBUG_FREELIST | |
f2333166 | 343 | extern SCM scm_debug_newcell (void); |
16d35552 | 344 | extern SCM scm_debug_newcell2 (void); |
25748c78 | 345 | extern SCM scm_gc_set_debug_check_freelist_x (SCM flag); |
88256b2e JB |
346 | #endif |
347 | ||
0f2d19dd | 348 | \f |
0f2d19dd | 349 | |
61045190 DH |
350 | #if (SCM_DEBUG_CELL_ACCESSES == 1) |
351 | extern void scm_assert_cell_valid (SCM); | |
352 | extern SCM scm_set_debug_cell_accesses_x (SCM flag); | |
353 | #endif | |
8163d1e4 | 354 | extern SCM scm_object_address (SCM obj); |
fe1a46f0 JB |
355 | extern SCM scm_unhash_name (SCM name); |
356 | extern SCM scm_gc_stats (void); | |
fe1a46f0 | 357 | extern SCM scm_gc (void); |
a00c95d9 | 358 | extern void scm_gc_for_alloc (struct scm_freelist_t *freelist); |
a00c95d9 | 359 | extern SCM scm_gc_for_newcell (struct scm_freelist_t *master, SCM *freelist); |
4c48ba06 | 360 | #if 0 |
a00c95d9 | 361 | extern void scm_alloc_cluster (struct scm_freelist_t *master); |
4c48ba06 | 362 | #endif |
3eeba8d4 | 363 | extern void scm_igc (const char *what); |
fe1a46f0 | 364 | extern void scm_gc_mark (SCM p); |
56495472 | 365 | extern void scm_gc_mark_dependencies (SCM p); |
fe1a46f0 JB |
366 | extern void scm_mark_locations (SCM_STACKITEM x[], scm_sizet n); |
367 | extern int scm_cellp (SCM value); | |
368 | extern void scm_gc_sweep (void); | |
07806695 JB |
369 | extern void * scm_must_malloc (scm_sizet len, const char *what); |
370 | extern void * scm_must_realloc (void *where, | |
fe1a46f0 | 371 | scm_sizet olen, scm_sizet len, |
3eeba8d4 | 372 | const char *what); |
e4a7824f MV |
373 | extern char *scm_must_strdup (const char *str); |
374 | extern char *scm_must_strndup (const char *str, unsigned long n); | |
fe1a46f0 | 375 | extern void scm_done_malloc (long size); |
9d47a1e6 | 376 | extern void scm_done_free (long size); |
07806695 | 377 | extern void scm_must_free (void *obj); |
5d2b97cd DH |
378 | extern void scm_remember_upto_here_1 (SCM obj); |
379 | extern void scm_remember_upto_here_2 (SCM obj1, SCM obj2); | |
380 | extern void scm_remember_upto_here (SCM obj1, ...); | |
fe1a46f0 | 381 | extern SCM scm_return_first (SCM elt, ...); |
41b0806d | 382 | extern int scm_return_first_int (int x, ...); |
fe1a46f0 JB |
383 | extern SCM scm_permanent_object (SCM obj); |
384 | extern SCM scm_protect_object (SCM obj); | |
385 | extern SCM scm_unprotect_object (SCM obj); | |
85db4a2c | 386 | extern int scm_init_storage (void); |
92082045 | 387 | extern void *scm_get_stack_base (void); |
fe1a46f0 | 388 | extern void scm_init_gc (void); |
d1ca2c64 DH |
389 | |
390 | \f | |
391 | ||
392 | #if (SCM_DEBUG_DEPRECATED == 0) | |
393 | ||
e038c042 DH |
394 | #define SCM_SETAND_CAR(x, y) \ |
395 | (SCM_SETCAR ((x), SCM_PACK (SCM_UNPACK (SCM_CAR (x)) & (y)))) | |
396 | #define SCM_SETOR_CAR(x, y)\ | |
397 | (SCM_SETCAR ((x), SCM_PACK (SCM_UNPACK (SCM_CAR (x)) | (y)))) | |
61045190 DH |
398 | #define SCM_SETAND_CDR(x, y)\ |
399 | (SCM_SETCDR ((x), SCM_PACK (SCM_UNPACK (SCM_CDR (x)) & (y)))) | |
400 | #define SCM_SETOR_CDR(x, y)\ | |
401 | (SCM_SETCDR ((x), SCM_PACK (SCM_UNPACK (SCM_CDR (x)) | (y)))) | |
d1ca2c64 DH |
402 | #define SCM_FREEP(x) (SCM_FREE_CELL_P (x)) |
403 | #define SCM_NFREEP(x) (!SCM_FREE_CELL_P (x)) | |
fd336365 DH |
404 | #define SCM_GC8MARKP(x) SCM_GCMARKP (x) |
405 | #define SCM_SETGC8MARK(x) SCM_SETGCMARK (x) | |
406 | #define SCM_CLRGC8MARK(x) SCM_CLRGCMARK (x) | |
407 | #define SCM_GCTYP16(x) SCM_TYP16 (x) | |
408 | #define SCM_GCCDR(x) SCM_CDR (x) | |
5d2b97cd | 409 | extern void scm_remember (SCM * ptr); |
d1ca2c64 DH |
410 | |
411 | #endif /* SCM_DEBUG_DEPRECATED == 0 */ | |
412 | ||
61045190 | 413 | #endif /* SCM_GC_H */ |
89e00824 ML |
414 | |
415 | /* | |
416 | Local Variables: | |
417 | c-file-style: "gnu" | |
418 | End: | |
419 | */ |