| 1 | /* classes: h_files */ |
| 2 | |
| 3 | #ifndef SCM_GC_H |
| 4 | #define SCM_GC_H |
| 5 | |
| 6 | /* Copyright (C) 1995,1996,1998,1999,2000,2001 Free Software Foundation, Inc. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2, or (at your option) |
| 11 | * any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this software; see the file COPYING. If not, write to |
| 20 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
| 21 | * Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | * As a special exception, the Free Software Foundation gives permission |
| 24 | * for additional uses of the text contained in its release of GUILE. |
| 25 | * |
| 26 | * The exception is that, if you link the GUILE library with other files |
| 27 | * to produce an executable, this does not by itself cause the |
| 28 | * resulting executable to be covered by the GNU General Public License. |
| 29 | * Your use of that executable is in no way restricted on account of |
| 30 | * linking the GUILE library code into it. |
| 31 | * |
| 32 | * This exception does not however invalidate any other reasons why |
| 33 | * the executable file might be covered by the GNU General Public License. |
| 34 | * |
| 35 | * This exception applies only to the code released by the |
| 36 | * Free Software Foundation under the name GUILE. If you copy |
| 37 | * code from other Free Software Foundation releases into a copy of |
| 38 | * GUILE, as the General Public License permits, the exception does |
| 39 | * not apply to the code that you add in this way. To avoid misleading |
| 40 | * anyone as to the status of such modified files, you must delete |
| 41 | * this exception notice from them. |
| 42 | * |
| 43 | * If you write modifications of your own for GUILE, it is your choice |
| 44 | * whether to permit this exception to apply to your modifications. |
| 45 | * If you do not wish that, delete this exception notice. */ |
| 46 | |
| 47 | \f |
| 48 | |
| 49 | #include "libguile/__scm.h" |
| 50 | |
| 51 | #include "libguile/hooks.h" |
| 52 | |
| 53 | \f |
| 54 | |
| 55 | typedef struct scm_t_cell |
| 56 | { |
| 57 | scm_t_bits word_0; |
| 58 | scm_t_bits word_1; |
| 59 | } scm_t_cell; |
| 60 | |
| 61 | |
| 62 | /* SCM_CELLPTR is a pointer to a cons cell which may be compared or |
| 63 | * differenced. |
| 64 | */ |
| 65 | typedef scm_t_cell * SCM_CELLPTR; |
| 66 | |
| 67 | |
| 68 | /* Cray machines have pointers that are incremented once for each word, |
| 69 | * rather than each byte, the 3 most significant bits encode the byte |
| 70 | * within the word. The following macros deal with this by storing the |
| 71 | * native Cray pointers like the ones that looks like scm expects. This |
| 72 | * is done for any pointers that might appear in the car of a scm_t_cell, |
| 73 | * pointers to scm_vector elts, functions, &c are not munged. |
| 74 | */ |
| 75 | #ifdef _UNICOS |
| 76 | # define SCM2PTR(x) ((SCM_CELLPTR) (SCM_UNPACK (x) >> 3)) |
| 77 | # define PTR2SCM(x) (SCM_PACK (((scm_t_bits) (x)) << 3)) |
| 78 | #else |
| 79 | # define SCM2PTR(x) ((SCM_CELLPTR) (SCM_UNPACK (x))) |
| 80 | # define PTR2SCM(x) (SCM_PACK ((scm_t_bits) (x))) |
| 81 | #endif /* def _UNICOS */ |
| 82 | |
| 83 | #define SCM_GC_CARD_N_HEADER_CELLS 1 |
| 84 | #define SCM_GC_CARD_N_CELLS 256 |
| 85 | |
| 86 | #define SCM_GC_CARD_SIZE (SCM_GC_CARD_N_CELLS * sizeof (scm_t_cell)) |
| 87 | #define SCM_GC_CARD_N_DATA_CELLS (SCM_GC_CARD_N_CELLS - SCM_GC_CARD_N_HEADER_CELLS) |
| 88 | |
| 89 | #define SCM_GC_CARD_BVEC_SIZE_IN_LIMBS \ |
| 90 | ((SCM_GC_CARD_N_CELLS + SCM_C_BVEC_LIMB_BITS - 1) / SCM_C_BVEC_LIMB_BITS) |
| 91 | |
| 92 | #define SCM_GC_IN_CARD_HEADERP(x) \ |
| 93 | SCM_PTR_LT ((scm_t_cell *) (x), SCM_GC_CELL_CARD (x) + SCM_GC_CARD_N_HEADER_CELLS) |
| 94 | |
| 95 | #define SCM_GC_CARD_BVEC(card) ((scm_t_c_bvec_limb *) ((card)->word_0)) |
| 96 | #define SCM_GC_SET_CARD_BVEC(card, bvec) \ |
| 97 | ((card)->word_0 = (scm_t_bits) (bvec)) |
| 98 | |
| 99 | #define SCM_GC_GET_CARD_FLAGS(card) ((long) ((card)->word_1)) |
| 100 | #define SCM_GC_SET_CARD_FLAGS(card, flags) \ |
| 101 | ((card)->word_1 = (scm_t_bits) (flags)) |
| 102 | #define SCM_GC_CLR_CARD_FLAGS(card) (SCM_GC_SET_CARD_FLAGS (card, 0L)) |
| 103 | |
| 104 | #define SCM_GC_GET_CARD_FLAG(card, shift) (SCM_GC_GET_CARD_FLAGS (card) & (1L << (shift))) |
| 105 | #define SCM_GC_SET_CARD_FLAG(card, shift) \ |
| 106 | (SCM_GC_SET_CARD_FLAGS (card, SCM_GC_GET_CARD_FLAGS(card) | (1L << (shift)))) |
| 107 | #define SCM_GC_CLR_CARD_FLAG(card, shift) \ |
| 108 | (SCM_GC_SET_CARD_FLAGS (card, SCM_GC_GET_CARD_FLAGS(card) & ~(1L << (shift)))) |
| 109 | |
| 110 | #define SCM_GC_CARDF_DOUBLECELL 0 |
| 111 | |
| 112 | #define SCM_GC_CARD_DOUBLECELLP(card) SCM_GC_GET_CARD_FLAG (card, SCM_GC_CARDF_DOUBLECELL) |
| 113 | #define SCM_GC_SET_CARD_DOUBLECELL(card) SCM_GC_SET_CARD_FLAG (card, SCM_GC_CARDF_DOUBLECELL) |
| 114 | |
| 115 | /* card addressing. for efficiency, cards are *always* aligned to |
| 116 | SCM_GC_CARD_SIZE. */ |
| 117 | |
| 118 | #define SCM_GC_CARD_SIZE_MASK (SCM_GC_CARD_SIZE - 1) |
| 119 | #define SCM_GC_CARD_ADDR_MASK (~SCM_GC_CARD_SIZE_MASK) |
| 120 | |
| 121 | #define SCM_GC_CELL_CARD(x) ((SCM_CELLPTR) ((long) (x) & SCM_GC_CARD_ADDR_MASK)) |
| 122 | #define SCM_GC_CELL_SPAN(x) ((SCM_GC_CARD_DOUBLECELLP (SCM_GC_CELL_CARD (x))) ? 2 : 1) |
| 123 | #define SCM_GC_CELL_OFFSET(x) (((long) (x) & SCM_GC_CARD_SIZE_MASK) >> SCM_CELL_SIZE_SHIFT) |
| 124 | #define SCM_GC_CELL_BVEC(x) SCM_GC_CARD_BVEC (SCM_GC_CELL_CARD (x)) |
| 125 | #define SCM_GC_CELL_GET_BIT(x) SCM_C_BVEC_GET (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x)) |
| 126 | #define SCM_GC_CELL_SET_BIT(x) SCM_C_BVEC_SET (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x)) |
| 127 | #define SCM_GC_CELL_CLR_BIT(x) SCM_C_BVEC_CLR (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x)) |
| 128 | |
| 129 | #define SCM_GC_CARD_UP(x) SCM_GC_CELL_CARD ((char *) (x) + SCM_GC_CARD_SIZE - 1) |
| 130 | #define SCM_GC_CARD_DOWN SCM_GC_CELL_CARD |
| 131 | |
| 132 | /* low level bit banging aids */ |
| 133 | |
| 134 | typedef unsigned long scm_t_c_bvec_limb; |
| 135 | |
| 136 | #if (SIZEOF_LONG == 8) |
| 137 | # define SCM_C_BVEC_LIMB_BITS 64 |
| 138 | # define SCM_C_BVEC_OFFSET_SHIFT 6 |
| 139 | # define SCM_C_BVEC_POS_MASK 63 |
| 140 | # define SCM_CELL_SIZE_SHIFT 4 |
| 141 | #else |
| 142 | # define SCM_C_BVEC_LIMB_BITS 32 |
| 143 | # define SCM_C_BVEC_OFFSET_SHIFT 5 |
| 144 | # define SCM_C_BVEC_POS_MASK 31 |
| 145 | # define SCM_CELL_SIZE_SHIFT 3 |
| 146 | #endif |
| 147 | |
| 148 | #define SCM_C_BVEC_OFFSET(pos) (pos >> SCM_C_BVEC_OFFSET_SHIFT) |
| 149 | |
| 150 | #define SCM_C_BVEC_GET(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] & (1L << (pos & SCM_C_BVEC_POS_MASK))) |
| 151 | #define SCM_C_BVEC_SET(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] |= (1L << (pos & SCM_C_BVEC_POS_MASK))) |
| 152 | #define SCM_C_BVEC_CLR(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] &= ~(1L << (pos & SCM_C_BVEC_POS_MASK))) |
| 153 | |
| 154 | #define SCM_C_BVEC_BITS2BYTES(bits) \ |
| 155 | (sizeof (scm_t_c_bvec_limb) * ((((bits) & SCM_C_BVEC_POS_MASK) ? 1L : 0L) + SCM_C_BVEC_OFFSET (bits))) |
| 156 | |
| 157 | #define SCM_C_BVEC_SET_BYTES(bvec, bytes) (memset (bvec, 0xff, bytes)) |
| 158 | #define SCM_C_BVEC_SET_ALL_BITS(bvec, bits) SCM_C_BVEC_SET_BYTES (bvec, SCM_C_BVEC_BITS2BYTES (bits)) |
| 159 | |
| 160 | #define SCM_C_BVEC_CLR_BYTES(bvec, bytes) (memset (bvec, 0, bytes)) |
| 161 | #define SCM_C_BVEC_CLR_ALL_BITS(bvec, bits) SCM_C_BVEC_CLR_BYTES (bvec, SCM_C_BVEC_BITS2BYTES (bits)) |
| 162 | |
| 163 | /* testing and changing GC marks */ |
| 164 | |
| 165 | #define SCM_GCMARKP(x) SCM_GC_CELL_GET_BIT (x) |
| 166 | #define SCM_SETGCMARK(x) SCM_GC_CELL_SET_BIT (x) |
| 167 | #define SCM_CLRGCMARK(x) SCM_GC_CELL_CLR_BIT (x) |
| 168 | |
| 169 | |
| 170 | /* Low level cell data accessing macros. These macros should only be used |
| 171 | * from within code related to garbage collection issues, since they will |
| 172 | * never check the cells they are applied to - not even if guile is compiled |
| 173 | * in debug mode. In particular these macros will even work for free cells, |
| 174 | * which should never be encountered by user code. */ |
| 175 | |
| 176 | #define SCM_GC_CELL_WORD(x, n) \ |
| 177 | (((const scm_t_bits *) SCM2PTR (x)) [n]) |
| 178 | #define SCM_GC_CELL_OBJECT(x, n) \ |
| 179 | (SCM_PACK (((const scm_t_bits *) SCM2PTR (x)) [n])) |
| 180 | #define SCM_GC_SET_CELL_WORD(x, n, v) \ |
| 181 | (((scm_t_bits *) SCM2PTR (x)) [n] = (scm_t_bits) (v)) |
| 182 | #define SCM_GC_SET_CELL_OBJECT(x, n, v) \ |
| 183 | (((scm_t_bits *) SCM2PTR (x)) [n] = SCM_UNPACK (v)) |
| 184 | #define SCM_GC_CELL_TYPE(x) SCM_GC_CELL_WORD (x, 0) |
| 185 | |
| 186 | |
| 187 | /* Except for the garbage collector, no part of guile should ever run over a |
| 188 | * free cell. Thus, if guile is compiled in debug mode the SCM_CELL_* and |
| 189 | * SCM_SET_CELL_* macros below report an error if they are applied to a free |
| 190 | * cell. Some other plausibility checks are also performed. However, if |
| 191 | * guile is not compiled in debug mode, there won't be any time penalty at all |
| 192 | * when using these macros. */ |
| 193 | |
| 194 | #if (SCM_DEBUG_CELL_ACCESSES == 1) |
| 195 | # define SCM_VALIDATE_CELL(cell, expr) (scm_assert_cell_valid (cell), (expr)) |
| 196 | #else |
| 197 | # define SCM_VALIDATE_CELL(cell, expr) (expr) |
| 198 | #endif |
| 199 | |
| 200 | #define SCM_CELL_WORD(x, n) \ |
| 201 | SCM_VALIDATE_CELL ((x), SCM_GC_CELL_WORD ((x), (n))) |
| 202 | #define SCM_CELL_WORD_0(x) SCM_CELL_WORD (x, 0) |
| 203 | #define SCM_CELL_WORD_1(x) SCM_CELL_WORD (x, 1) |
| 204 | #define SCM_CELL_WORD_2(x) SCM_CELL_WORD (x, 2) |
| 205 | #define SCM_CELL_WORD_3(x) SCM_CELL_WORD (x, 3) |
| 206 | |
| 207 | #define SCM_CELL_OBJECT(x, n) \ |
| 208 | SCM_VALIDATE_CELL ((x), SCM_GC_CELL_OBJECT ((x), (n))) |
| 209 | #define SCM_CELL_OBJECT_0(x) SCM_CELL_OBJECT (x, 0) |
| 210 | #define SCM_CELL_OBJECT_1(x) SCM_CELL_OBJECT (x, 1) |
| 211 | #define SCM_CELL_OBJECT_2(x) SCM_CELL_OBJECT (x, 2) |
| 212 | #define SCM_CELL_OBJECT_3(x) SCM_CELL_OBJECT (x, 3) |
| 213 | |
| 214 | #define SCM_SET_CELL_WORD(x, n, v) \ |
| 215 | SCM_VALIDATE_CELL ((x), SCM_GC_SET_CELL_WORD ((x), (n), (v))) |
| 216 | #define SCM_SET_CELL_WORD_0(x, v) SCM_SET_CELL_WORD (x, 0, v) |
| 217 | #define SCM_SET_CELL_WORD_1(x, v) SCM_SET_CELL_WORD (x, 1, v) |
| 218 | #define SCM_SET_CELL_WORD_2(x, v) SCM_SET_CELL_WORD (x, 2, v) |
| 219 | #define SCM_SET_CELL_WORD_3(x, v) SCM_SET_CELL_WORD (x, 3, v) |
| 220 | |
| 221 | #define SCM_SET_CELL_OBJECT(x, n, v) \ |
| 222 | SCM_VALIDATE_CELL ((x), SCM_GC_SET_CELL_OBJECT ((x), (n), (v))) |
| 223 | #define SCM_SET_CELL_OBJECT_0(x, v) SCM_SET_CELL_OBJECT (x, 0, v) |
| 224 | #define SCM_SET_CELL_OBJECT_1(x, v) SCM_SET_CELL_OBJECT (x, 1, v) |
| 225 | #define SCM_SET_CELL_OBJECT_2(x, v) SCM_SET_CELL_OBJECT (x, 2, v) |
| 226 | #define SCM_SET_CELL_OBJECT_3(x, v) SCM_SET_CELL_OBJECT (x, 3, v) |
| 227 | |
| 228 | #define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x) |
| 229 | #define SCM_SET_CELL_TYPE(x, t) SCM_SET_CELL_WORD_0 (x, t) |
| 230 | |
| 231 | |
| 232 | /* Freelists consist of linked cells where the type entry holds the value |
| 233 | * scm_tc_free_cell and the second entry holds a pointer to the next cell of |
| 234 | * the freelist. Due to this structure, freelist cells are not cons cells |
| 235 | * and thus may not be accessed using SCM_CAR and SCM_CDR. */ |
| 236 | |
| 237 | #define SCM_FREE_CELL_P(x) \ |
| 238 | (!SCM_IMP (x) && (SCM_GC_CELL_TYPE (x) == scm_tc_free_cell)) |
| 239 | #define SCM_FREE_CELL_CDR(x) \ |
| 240 | (SCM_GC_CELL_OBJECT ((x), 1)) |
| 241 | #define SCM_SET_FREE_CELL_CDR(x, v) \ |
| 242 | (SCM_GC_SET_CELL_OBJECT ((x), 1, (v))) |
| 243 | |
| 244 | |
| 245 | #define SCM_CELL_WORD_LOC(x, n) ((scm_t_bits *) & SCM_CELL_WORD (x, n)) |
| 246 | #define SCM_CARLOC(x) ((SCM *) SCM_CELL_WORD_LOC ((x), 0)) |
| 247 | #define SCM_CDRLOC(x) ((SCM *) SCM_CELL_WORD_LOC ((x), 1)) |
| 248 | |
| 249 | |
| 250 | /* SCM_PTR_LT and friends define how to compare two SCM_CELLPTRs (which may |
| 251 | * point to cells in different heap segments). |
| 252 | */ |
| 253 | #define SCM_PTR_LT(x, y) ((x) < (y)) |
| 254 | #define SCM_PTR_GT(x, y) (SCM_PTR_LT (y, x)) |
| 255 | #define SCM_PTR_LE(x, y) (!SCM_PTR_GT (x, y)) |
| 256 | #define SCM_PTR_GE(x, y) (!SCM_PTR_LT (x, y)) |
| 257 | |
| 258 | |
| 259 | #define SCM_MARKEDP SCM_GCMARKP |
| 260 | #define SCM_NMARKEDP(x) (!SCM_MARKEDP (x)) |
| 261 | |
| 262 | #if (SCM_DEBUG_CELL_ACCESSES == 1) |
| 263 | SCM_API unsigned int scm_debug_cell_accesses_p; |
| 264 | #endif |
| 265 | |
| 266 | SCM_API struct scm_t_heap_seg_data *scm_heap_table; |
| 267 | SCM_API size_t scm_n_heap_segs; |
| 268 | SCM_API int scm_block_gc; |
| 269 | SCM_API int scm_gc_heap_lock; |
| 270 | SCM_API unsigned int scm_gc_running_p; |
| 271 | \f |
| 272 | |
| 273 | SCM_API size_t scm_default_init_heap_size_1; |
| 274 | SCM_API int scm_default_min_yield_1; |
| 275 | SCM_API size_t scm_default_init_heap_size_2; |
| 276 | SCM_API int scm_default_min_yield_2; |
| 277 | SCM_API size_t scm_default_max_segment_size; |
| 278 | |
| 279 | SCM_API size_t scm_max_segment_size; |
| 280 | SCM_API SCM_CELLPTR scm_heap_org; |
| 281 | SCM_API SCM scm_freelist; |
| 282 | SCM_API struct scm_t_freelist scm_master_freelist; |
| 283 | SCM_API SCM scm_freelist2; |
| 284 | SCM_API struct scm_t_freelist scm_master_freelist2; |
| 285 | SCM_API unsigned long scm_gc_cells_collected; |
| 286 | SCM_API unsigned long scm_gc_yield; |
| 287 | SCM_API unsigned long scm_gc_malloc_collected; |
| 288 | SCM_API unsigned long scm_gc_ports_collected; |
| 289 | SCM_API unsigned long scm_cells_allocated; |
| 290 | SCM_API unsigned long scm_mallocated; |
| 291 | SCM_API unsigned long scm_mtrigger; |
| 292 | |
| 293 | SCM_API SCM scm_after_gc_hook; |
| 294 | |
| 295 | SCM_API scm_t_c_hook scm_before_gc_c_hook; |
| 296 | SCM_API scm_t_c_hook scm_before_mark_c_hook; |
| 297 | SCM_API scm_t_c_hook scm_before_sweep_c_hook; |
| 298 | SCM_API scm_t_c_hook scm_after_sweep_c_hook; |
| 299 | SCM_API scm_t_c_hook scm_after_gc_c_hook; |
| 300 | |
| 301 | #if defined (GUILE_DEBUG) || defined (GUILE_DEBUG_FREELIST) |
| 302 | SCM_API SCM scm_map_free_list (void); |
| 303 | SCM_API SCM scm_free_list_length (void); |
| 304 | #endif |
| 305 | #ifdef GUILE_DEBUG_FREELIST |
| 306 | SCM_API SCM scm_gc_set_debug_check_freelist_x (SCM flag); |
| 307 | #endif |
| 308 | |
| 309 | \f |
| 310 | |
| 311 | #if (SCM_DEBUG_CELL_ACCESSES == 1) |
| 312 | SCM_API void scm_assert_cell_valid (SCM); |
| 313 | SCM_API SCM scm_set_debug_cell_accesses_x (SCM flag); |
| 314 | #endif |
| 315 | SCM_API SCM scm_object_address (SCM obj); |
| 316 | SCM_API SCM scm_gc_stats (void); |
| 317 | SCM_API SCM scm_gc (void); |
| 318 | SCM_API void scm_gc_for_alloc (struct scm_t_freelist *freelist); |
| 319 | SCM_API SCM scm_gc_for_newcell (struct scm_t_freelist *master, SCM *freelist); |
| 320 | #if 0 |
| 321 | SCM_API void scm_alloc_cluster (struct scm_t_freelist *master); |
| 322 | #endif |
| 323 | SCM_API void scm_igc (const char *what); |
| 324 | SCM_API void scm_gc_mark (SCM p); |
| 325 | SCM_API void scm_gc_mark_dependencies (SCM p); |
| 326 | SCM_API void scm_mark_locations (SCM_STACKITEM x[], unsigned long n); |
| 327 | SCM_API int scm_cellp (SCM value); |
| 328 | SCM_API void scm_gc_sweep (void); |
| 329 | |
| 330 | SCM_API void *scm_malloc (size_t size); |
| 331 | SCM_API void *scm_realloc (void *mem, size_t size); |
| 332 | SCM_API char *scm_strdup (const char *str); |
| 333 | SCM_API char *scm_strndup (const char *str, size_t n); |
| 334 | SCM_API void scm_gc_register_collectable_memory (void *mem, size_t size, |
| 335 | const char *what); |
| 336 | SCM_API void scm_gc_unregister_collectable_memory (void *mem, size_t size, |
| 337 | const char *what); |
| 338 | SCM_API void *scm_gc_malloc (size_t size, const char *what); |
| 339 | SCM_API void *scm_gc_realloc (void *mem, size_t old_size, |
| 340 | size_t new_size, const char *what); |
| 341 | SCM_API void scm_gc_free (void *mem, size_t size, const char *what); |
| 342 | SCM_API char *scm_gc_strdup (const char *str, const char *what); |
| 343 | SCM_API char *scm_gc_strndup (const char *str, size_t n, const char *what); |
| 344 | |
| 345 | SCM_API void scm_remember_upto_here_1 (SCM obj); |
| 346 | SCM_API void scm_remember_upto_here_2 (SCM obj1, SCM obj2); |
| 347 | SCM_API void scm_remember_upto_here (SCM obj1, ...); |
| 348 | SCM_API SCM scm_return_first (SCM elt, ...); |
| 349 | SCM_API int scm_return_first_int (int x, ...); |
| 350 | SCM_API SCM scm_permanent_object (SCM obj); |
| 351 | SCM_API SCM scm_gc_protect_object (SCM obj); |
| 352 | SCM_API SCM scm_gc_unprotect_object (SCM obj); |
| 353 | SCM_API void scm_gc_register_root (SCM *p); |
| 354 | SCM_API void scm_gc_unregister_root (SCM *p); |
| 355 | SCM_API void scm_gc_register_roots (SCM *b, unsigned long n); |
| 356 | SCM_API void scm_gc_unregister_roots (SCM *b, unsigned long n); |
| 357 | SCM_API int scm_init_storage (void); |
| 358 | SCM_API void *scm_get_stack_base (void); |
| 359 | SCM_API void scm_init_gc (void); |
| 360 | |
| 361 | #if SCM_ENABLE_DEPRECATED == 1 |
| 362 | |
| 363 | SCM_API SCM scm_deprecated_newcell (void); |
| 364 | SCM_API SCM scm_deprecated_newcell2 (void); |
| 365 | |
| 366 | #define SCM_NEWCELL(_into) \ |
| 367 | do { _into = scm_deprecated_newcell (); } while (0) |
| 368 | #define SCM_NEWCELL2(_into) \ |
| 369 | do { _into = scm_deprecated_newcell2 (); } while (0) |
| 370 | |
| 371 | SCM_API void * scm_must_malloc (size_t len, const char *what); |
| 372 | SCM_API void * scm_must_realloc (void *where, |
| 373 | size_t olen, size_t len, |
| 374 | const char *what); |
| 375 | SCM_API char *scm_must_strdup (const char *str); |
| 376 | SCM_API char *scm_must_strndup (const char *str, size_t n); |
| 377 | SCM_API void scm_done_malloc (long size); |
| 378 | SCM_API void scm_done_free (long size); |
| 379 | SCM_API void scm_must_free (void *obj); |
| 380 | |
| 381 | #endif |
| 382 | |
| 383 | #endif /* SCM_GC_H */ |
| 384 | |
| 385 | /* |
| 386 | Local Variables: |
| 387 | c-file-style: "gnu" |
| 388 | End: |
| 389 | */ |