Mercurial > hg > xemacs-beta
annotate src/alloc.c @ 2732:2590b61c3f03
[xemacs-hg @ 2005-04-14 21:52:41 by viteno]
Update xemacs_extra_name.
| author | viteno |
|---|---|
| date | Thu, 14 Apr 2005 21:52:41 +0000 |
| parents | 6fa9919a9a0b |
| children | 05d62157e048 |
| rev | line source |
|---|---|
| 428 | 1 /* Storage allocation and gc for XEmacs Lisp interpreter. |
| 2 Copyright (C) 1985-1998 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1995 Sun Microsystems, Inc. | |
| 2367 | 4 Copyright (C) 1995, 1996, 2001, 2002, 2003, 2004 Ben Wing. |
| 428 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
| 8 XEmacs is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 10 Free Software Foundation; either version 2, or (at your option) any | |
| 11 later version. | |
| 12 | |
| 13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY 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 XEmacs; 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 /* Synched up with: FSF 19.28, Mule 2.0. Substantially different from | |
| 24 FSF. */ | |
| 25 | |
| 26 /* Authorship: | |
| 27 | |
| 28 FSF: Original version; a long time ago. | |
| 29 Mly: Significantly rewritten to use new 3-bit tags and | |
| 30 nicely abstracted object definitions, for 19.8. | |
| 31 JWZ: Improved code to keep track of purespace usage and | |
| 32 issue nice purespace and GC stats. | |
| 33 Ben Wing: Cleaned up frob-block lrecord code, added error-checking | |
| 34 and various changes for Mule, for 19.12. | |
| 35 Added bit vectors for 19.13. | |
| 36 Added lcrecord lists for 19.14. | |
| 37 slb: Lots of work on the purification and dump time code. | |
| 38 Synched Doug Lea malloc support from Emacs 20.2. | |
| 442 | 39 og: Killed the purespace. Portable dumper (moved to dumper.c) |
| 428 | 40 */ |
| 41 | |
| 42 #include <config.h> | |
| 43 #include "lisp.h" | |
| 44 | |
| 45 #include "backtrace.h" | |
| 46 #include "buffer.h" | |
| 47 #include "bytecode.h" | |
| 48 #include "chartab.h" | |
| 49 #include "device.h" | |
| 50 #include "elhash.h" | |
| 51 #include "events.h" | |
| 872 | 52 #include "extents-impl.h" |
| 1204 | 53 #include "file-coding.h" |
| 872 | 54 #include "frame-impl.h" |
| 428 | 55 #include "glyphs.h" |
| 56 #include "opaque.h" | |
| 1204 | 57 #include "lstream.h" |
| 872 | 58 #include "process.h" |
| 1292 | 59 #include "profile.h" |
| 428 | 60 #include "redisplay.h" |
| 61 #include "specifier.h" | |
| 62 #include "sysfile.h" | |
| 442 | 63 #include "sysdep.h" |
| 428 | 64 #include "window.h" |
| 65 #include "console-stream.h" | |
| 66 | |
| 67 #ifdef DOUG_LEA_MALLOC | |
| 68 #include <malloc.h> | |
| 69 #endif | |
| 70 | |
| 71 EXFUN (Fgarbage_collect, 0); | |
| 72 | |
| 814 | 73 static void recompute_need_to_garbage_collect (void); |
| 74 | |
| 428 | 75 #if 0 /* this is _way_ too slow to be part of the standard debug options */ |
| 76 #if defined(DEBUG_XEMACS) && defined(MULE) | |
| 77 #define VERIFY_STRING_CHARS_INTEGRITY | |
| 78 #endif | |
| 79 #endif | |
| 80 | |
| 81 /* Define this to use malloc/free with no freelist for all datatypes, | |
| 82 the hope being that some debugging tools may help detect | |
| 83 freed memory references */ | |
| 84 #ifdef USE_DEBUG_MALLOC /* Taking the above comment at face value -slb */ | |
| 85 #include <dmalloc.h> | |
| 86 #define ALLOC_NO_POOLS | |
| 87 #endif | |
| 88 | |
| 89 #ifdef DEBUG_XEMACS | |
| 458 | 90 static Fixnum debug_allocation; |
| 91 static Fixnum debug_allocation_backtrace_length; | |
| 428 | 92 #endif |
| 93 | |
| 94 /* Number of bytes of consing done since the last gc */ | |
| 814 | 95 static EMACS_INT consing_since_gc; |
| 1292 | 96 EMACS_UINT total_consing; |
| 97 | |
| 814 | 98 int need_to_garbage_collect; |
| 851 | 99 int need_to_check_c_alloca; |
| 887 | 100 int need_to_signal_post_gc; |
| 851 | 101 int funcall_allocation_flag; |
| 102 Bytecount __temp_alloca_size__; | |
| 103 Bytecount funcall_alloca_count; | |
| 814 | 104 |
| 105 /* Determine now whether we need to garbage collect or not, to make | |
| 106 Ffuncall() faster */ | |
| 107 #define INCREMENT_CONS_COUNTER_1(size) \ | |
| 108 do \ | |
| 109 { \ | |
| 110 consing_since_gc += (size); \ | |
| 1292 | 111 total_consing += (size); \ |
| 112 if (profiling_active) \ | |
| 113 profile_record_consing (size); \ | |
| 814 | 114 recompute_need_to_garbage_collect (); \ |
| 115 } while (0) | |
| 428 | 116 |
| 117 #define debug_allocation_backtrace() \ | |
| 118 do { \ | |
| 119 if (debug_allocation_backtrace_length > 0) \ | |
| 120 debug_short_backtrace (debug_allocation_backtrace_length); \ | |
| 121 } while (0) | |
| 122 | |
| 123 #ifdef DEBUG_XEMACS | |
| 801 | 124 #define INCREMENT_CONS_COUNTER(foosize, type) \ |
| 125 do { \ | |
| 126 if (debug_allocation) \ | |
| 127 { \ | |
| 128 stderr_out ("allocating %s (size %ld)\n", type, \ | |
| 129 (long) foosize); \ | |
| 130 debug_allocation_backtrace (); \ | |
| 131 } \ | |
| 132 INCREMENT_CONS_COUNTER_1 (foosize); \ | |
| 428 | 133 } while (0) |
| 134 #define NOSEEUM_INCREMENT_CONS_COUNTER(foosize, type) \ | |
| 135 do { \ | |
| 136 if (debug_allocation > 1) \ | |
| 137 { \ | |
| 801 | 138 stderr_out ("allocating noseeum %s (size %ld)\n", type, \ |
| 139 (long) foosize); \ | |
| 428 | 140 debug_allocation_backtrace (); \ |
| 141 } \ | |
| 142 INCREMENT_CONS_COUNTER_1 (foosize); \ | |
| 143 } while (0) | |
| 144 #else | |
| 145 #define INCREMENT_CONS_COUNTER(size, type) INCREMENT_CONS_COUNTER_1 (size) | |
| 146 #define NOSEEUM_INCREMENT_CONS_COUNTER(size, type) \ | |
| 147 INCREMENT_CONS_COUNTER_1 (size) | |
| 148 #endif | |
| 149 | |
| 150 #define DECREMENT_CONS_COUNTER(size) do { \ | |
| 151 consing_since_gc -= (size); \ | |
| 1292 | 152 total_consing -= (size); \ |
| 153 if (profiling_active) \ | |
| 154 profile_record_unconsing (size); \ | |
| 428 | 155 if (consing_since_gc < 0) \ |
| 156 consing_since_gc = 0; \ | |
| 814 | 157 recompute_need_to_garbage_collect (); \ |
| 428 | 158 } while (0) |
| 159 | |
| 160 /* Number of bytes of consing since gc before another gc should be done. */ | |
| 801 | 161 static EMACS_INT gc_cons_threshold; |
| 162 | |
| 163 /* Percentage of consing of total data size before another GC. */ | |
| 164 static EMACS_INT gc_cons_percentage; | |
| 165 | |
| 166 #ifdef ERROR_CHECK_GC | |
| 853 | 167 int always_gc; /* Debugging hack; equivalent to |
| 168 (setq gc-cons-thresold -1) */ | |
| 801 | 169 #else |
| 170 #define always_gc 0 | |
| 171 #endif | |
| 428 | 172 |
| 173 /* Nonzero during gc */ | |
| 174 int gc_in_progress; | |
| 175 | |
| 1154 | 176 /* Nonzero means display messages at beginning and end of GC. */ |
| 177 | |
| 178 int garbage_collection_messages; | |
| 179 | |
| 428 | 180 /* Number of times GC has happened at this level or below. |
| 181 * Level 0 is most volatile, contrary to usual convention. | |
| 182 * (Of course, there's only one level at present) */ | |
| 183 EMACS_INT gc_generation_number[1]; | |
| 184 | |
| 185 /* This is just for use by the printer, to allow things to print uniquely */ | |
| 186 static int lrecord_uid_counter; | |
| 187 | |
| 188 /* Nonzero when calling certain hooks or doing other things where | |
| 189 a GC would be bad */ | |
| 1957 | 190 int gc_currently_forbidden; |
| 428 | 191 |
| 192 /* Hooks. */ | |
| 193 Lisp_Object Vpre_gc_hook, Qpre_gc_hook; | |
| 194 Lisp_Object Vpost_gc_hook, Qpost_gc_hook; | |
| 195 | |
| 196 /* "Garbage collecting" */ | |
| 197 Lisp_Object Vgc_message; | |
| 198 Lisp_Object Vgc_pointer_glyph; | |
| 2367 | 199 static const Ascbyte gc_default_message[] = "Garbage collecting"; |
| 428 | 200 Lisp_Object Qgarbage_collecting; |
| 201 | |
| 1292 | 202 static Lisp_Object QSin_garbage_collection; |
| 203 | |
| 428 | 204 /* Non-zero means we're in the process of doing the dump */ |
| 205 int purify_flag; | |
| 206 | |
| 1204 | 207 /* Non-zero means we're pdumping out or in */ |
| 208 #ifdef PDUMP | |
| 209 int in_pdump; | |
| 210 #endif | |
| 211 | |
| 800 | 212 #ifdef ERROR_CHECK_TYPES |
| 428 | 213 |
| 793 | 214 Error_Behavior ERROR_ME, ERROR_ME_NOT, ERROR_ME_WARN, ERROR_ME_DEBUG_WARN; |
| 428 | 215 |
| 216 #endif | |
| 217 | |
| 801 | 218 /* Very cheesy ways of figuring out how much memory is being used for |
| 219 data. #### Need better (system-dependent) ways. */ | |
| 220 void *minimum_address_seen; | |
| 221 void *maximum_address_seen; | |
| 222 | |
| 2720 | 223 #ifndef MC_ALLOC |
| 428 | 224 int |
| 225 c_readonly (Lisp_Object obj) | |
| 226 { | |
| 227 return POINTER_TYPE_P (XTYPE (obj)) && C_READONLY (obj); | |
| 228 } | |
| 2720 | 229 #endif /* MC_ALLOC */ |
| 428 | 230 |
| 231 int | |
| 232 lisp_readonly (Lisp_Object obj) | |
| 233 { | |
| 234 return POINTER_TYPE_P (XTYPE (obj)) && LISP_READONLY (obj); | |
| 235 } | |
| 236 | |
| 237 | |
| 238 /* Maximum amount of C stack to save when a GC happens. */ | |
| 239 | |
| 240 #ifndef MAX_SAVE_STACK | |
| 241 #define MAX_SAVE_STACK 0 /* 16000 */ | |
| 242 #endif | |
| 243 | |
| 244 /* Non-zero means ignore malloc warnings. Set during initialization. */ | |
| 245 int ignore_malloc_warnings; | |
| 246 | |
| 247 | |
| 2720 | 248 #ifndef MC_ALLOC |
| 428 | 249 static void *breathing_space; |
| 250 | |
| 251 void | |
| 252 release_breathing_space (void) | |
| 253 { | |
| 254 if (breathing_space) | |
| 255 { | |
| 256 void *tmp = breathing_space; | |
| 257 breathing_space = 0; | |
| 1726 | 258 xfree (tmp, void *); |
| 428 | 259 } |
| 260 } | |
| 2720 | 261 #endif /* not MC_ALLOC */ |
| 428 | 262 |
| 263 /* malloc calls this if it finds we are near exhausting storage */ | |
| 264 void | |
| 442 | 265 malloc_warning (const char *str) |
| 428 | 266 { |
| 267 if (ignore_malloc_warnings) | |
| 268 return; | |
| 269 | |
| 270 warn_when_safe | |
| 793 | 271 (Qmemory, Qemergency, |
| 428 | 272 "%s\n" |
| 273 "Killing some buffers may delay running out of memory.\n" | |
| 274 "However, certainly by the time you receive the 95%% warning,\n" | |
| 275 "you should clean up, kill this Emacs, and start a new one.", | |
| 276 str); | |
| 277 } | |
| 278 | |
| 279 /* Called if malloc returns zero */ | |
| 280 DOESNT_RETURN | |
| 281 memory_full (void) | |
| 282 { | |
| 283 /* Force a GC next time eval is called. | |
| 284 It's better to loop garbage-collecting (we might reclaim enough | |
| 285 to win) than to loop beeping and barfing "Memory exhausted" | |
| 286 */ | |
| 287 consing_since_gc = gc_cons_threshold + 1; | |
| 814 | 288 recompute_need_to_garbage_collect (); |
| 2720 | 289 #ifndef MC_ALLOC |
| 428 | 290 release_breathing_space (); |
| 2720 | 291 #endif /* not MC_ALLOC */ |
| 428 | 292 |
| 293 /* Flush some histories which might conceivably contain garbalogical | |
| 294 inhibitors. */ | |
| 295 if (!NILP (Fboundp (Qvalues))) | |
| 296 Fset (Qvalues, Qnil); | |
| 297 Vcommand_history = Qnil; | |
| 298 | |
| 563 | 299 out_of_memory ("Memory exhausted", Qunbound); |
| 428 | 300 } |
| 301 | |
| 801 | 302 static void |
| 303 set_alloc_mins_and_maxes (void *val, Bytecount size) | |
| 304 { | |
| 305 if (!val) | |
| 306 return; | |
| 307 if ((char *) val + size > (char *) maximum_address_seen) | |
| 308 maximum_address_seen = (char *) val + size; | |
| 309 if (!minimum_address_seen) | |
| 310 minimum_address_seen = | |
| 311 #if SIZEOF_VOID_P == 8 | |
| 312 (void *) 0xFFFFFFFFFFFFFFFF; | |
| 313 #else | |
| 314 (void *) 0xFFFFFFFF; | |
| 315 #endif | |
| 316 if ((char *) val < (char *) minimum_address_seen) | |
| 317 minimum_address_seen = (char *) val; | |
| 318 } | |
| 319 | |
| 1315 | 320 #ifdef ERROR_CHECK_MALLOC |
| 1292 | 321 static int in_malloc; |
| 1333 | 322 extern int regex_malloc_disallowed; |
| 2367 | 323 |
| 324 #define MALLOC_BEGIN() \ | |
| 325 do \ | |
| 326 { \ | |
| 327 assert (!in_malloc); \ | |
| 328 assert (!regex_malloc_disallowed); \ | |
| 329 in_malloc = 1; \ | |
| 330 } \ | |
| 331 while (0) | |
| 332 | |
| 2720 | 333 #ifdef MC_ALLOC |
| 334 #define FREE_OR_REALLOC_BEGIN(block) \ | |
| 335 do \ | |
| 336 { \ | |
| 337 /* Unbelievably, calling free() on 0xDEADBEEF doesn't cause an \ | |
| 338 error until much later on for many system mallocs, such as \ | |
| 339 the one that comes with Solaris 2.3. FMH!! */ \ | |
| 340 assert (block != (void *) 0xDEADBEEF); \ | |
| 341 MALLOC_BEGIN (); \ | |
| 342 } \ | |
| 343 while (0) | |
| 344 #else /* not MC_ALLOC */ | |
| 2367 | 345 #define FREE_OR_REALLOC_BEGIN(block) \ |
| 346 do \ | |
| 347 { \ | |
| 348 /* Unbelievably, calling free() on 0xDEADBEEF doesn't cause an \ | |
| 349 error until much later on for many system mallocs, such as \ | |
| 350 the one that comes with Solaris 2.3. FMH!! */ \ | |
| 351 assert (block != (void *) 0xDEADBEEF); \ | |
| 352 /* You cannot free something within dumped space, because there is \ | |
| 353 no longer any sort of malloc structure associated with the block. \ | |
| 354 If you are tripping this, you may need to conditionalize on \ | |
| 355 DUMPEDP. */ \ | |
| 356 assert (!DUMPEDP (block)); \ | |
| 357 MALLOC_BEGIN (); \ | |
| 358 } \ | |
| 359 while (0) | |
| 2720 | 360 #endif /* not MC_ALLOC */ |
| 2367 | 361 |
| 362 #define MALLOC_END() \ | |
| 363 do \ | |
| 364 { \ | |
| 365 in_malloc = 0; \ | |
| 366 } \ | |
| 367 while (0) | |
| 368 | |
| 369 #else /* ERROR_CHECK_MALLOC */ | |
| 370 | |
| 2658 | 371 #define MALLOC_BEGIN() |
| 2367 | 372 #define FREE_OR_REALLOC_BEGIN(block) |
| 373 #define MALLOC_END() | |
| 374 | |
| 375 #endif /* ERROR_CHECK_MALLOC */ | |
| 376 | |
| 377 static void | |
| 378 malloc_after (void *val, Bytecount size) | |
| 379 { | |
| 380 if (!val && size != 0) | |
| 381 memory_full (); | |
| 382 set_alloc_mins_and_maxes (val, size); | |
| 383 } | |
| 384 | |
| 385 /* like malloc, calloc, realloc, free but: | |
| 386 | |
| 387 -- check for no memory left | |
| 388 -- set internal mins and maxes | |
| 389 -- with error-checking on, check for reentrancy, invalid freeing, etc. | |
| 390 */ | |
| 1292 | 391 |
| 428 | 392 #undef xmalloc |
| 393 void * | |
| 665 | 394 xmalloc (Bytecount size) |
| 428 | 395 { |
| 1292 | 396 void *val; |
| 2367 | 397 MALLOC_BEGIN (); |
| 1292 | 398 val = malloc (size); |
| 2367 | 399 MALLOC_END (); |
| 400 malloc_after (val, size); | |
| 428 | 401 return val; |
| 402 } | |
| 403 | |
| 404 #undef xcalloc | |
| 405 static void * | |
| 665 | 406 xcalloc (Elemcount nelem, Bytecount elsize) |
| 428 | 407 { |
| 1292 | 408 void *val; |
| 2367 | 409 MALLOC_BEGIN (); |
| 1292 | 410 val= calloc (nelem, elsize); |
| 2367 | 411 MALLOC_END (); |
| 412 malloc_after (val, nelem * elsize); | |
| 428 | 413 return val; |
| 414 } | |
| 415 | |
| 416 void * | |
| 665 | 417 xmalloc_and_zero (Bytecount size) |
| 428 | 418 { |
| 419 return xcalloc (size, sizeof (char)); | |
| 420 } | |
| 421 | |
| 422 #undef xrealloc | |
| 423 void * | |
| 665 | 424 xrealloc (void *block, Bytecount size) |
| 428 | 425 { |
| 2367 | 426 FREE_OR_REALLOC_BEGIN (block); |
| 551 | 427 block = realloc (block, size); |
| 2367 | 428 MALLOC_END (); |
| 429 malloc_after (block, size); | |
| 551 | 430 return block; |
| 428 | 431 } |
| 432 | |
| 433 void | |
| 434 xfree_1 (void *block) | |
| 435 { | |
| 436 #ifdef ERROR_CHECK_MALLOC | |
| 437 assert (block); | |
| 438 #endif /* ERROR_CHECK_MALLOC */ | |
| 2367 | 439 FREE_OR_REALLOC_BEGIN (block); |
| 428 | 440 free (block); |
| 2367 | 441 MALLOC_END (); |
| 428 | 442 } |
| 443 | |
| 444 #ifdef ERROR_CHECK_GC | |
| 445 | |
| 2720 | 446 #ifndef MC_ALLOC |
| 428 | 447 static void |
| 665 | 448 deadbeef_memory (void *ptr, Bytecount size) |
| 428 | 449 { |
| 826 | 450 UINT_32_BIT *ptr4 = (UINT_32_BIT *) ptr; |
| 665 | 451 Bytecount beefs = size >> 2; |
| 428 | 452 |
| 453 /* In practice, size will always be a multiple of four. */ | |
| 454 while (beefs--) | |
| 1204 | 455 (*ptr4++) = 0xDEADBEEF; /* -559038737 base 10 */ |
| 428 | 456 } |
| 2720 | 457 #endif /* not MC_ALLOC */ |
| 428 | 458 |
| 459 #else /* !ERROR_CHECK_GC */ | |
| 460 | |
| 461 | |
| 462 #define deadbeef_memory(ptr, size) | |
| 463 | |
| 464 #endif /* !ERROR_CHECK_GC */ | |
| 465 | |
| 466 #undef xstrdup | |
| 467 char * | |
| 442 | 468 xstrdup (const char *str) |
| 428 | 469 { |
| 470 int len = strlen (str) + 1; /* for stupid terminating 0 */ | |
| 471 void *val = xmalloc (len); | |
| 771 | 472 |
| 428 | 473 if (val == 0) return 0; |
| 474 return (char *) memcpy (val, str, len); | |
| 475 } | |
| 476 | |
| 477 #ifdef NEED_STRDUP | |
| 478 char * | |
| 442 | 479 strdup (const char *s) |
| 428 | 480 { |
| 481 return xstrdup (s); | |
| 482 } | |
| 483 #endif /* NEED_STRDUP */ | |
| 484 | |
| 485 | |
| 2720 | 486 #ifndef MC_ALLOC |
| 428 | 487 static void * |
| 665 | 488 allocate_lisp_storage (Bytecount size) |
| 428 | 489 { |
| 793 | 490 void *val = xmalloc (size); |
| 491 /* We don't increment the cons counter anymore. Calling functions do | |
| 492 that now because we have two different kinds of cons counters -- one | |
| 493 for normal objects, and one for no-see-um conses (and possibly others | |
| 494 similar) where the conses are used totally internally, never escape, | |
| 495 and are created and then freed and shouldn't logically increment the | |
| 496 cons counting. #### (Or perhaps, we should decrement it when an object | |
| 497 get freed?) */ | |
| 498 | |
| 499 /* But we do now (as of 3-27-02) go and zero out the memory. This is a | |
| 500 good thing, as it will guarantee we won't get any intermittent bugs | |
| 1204 | 501 coming from an uninitiated field. The speed loss is unnoticeable, |
| 502 esp. as the objects are not large -- large stuff like buffer text and | |
| 503 redisplay structures are allocated separately. */ | |
| 793 | 504 memset (val, 0, size); |
| 851 | 505 |
| 506 if (need_to_check_c_alloca) | |
| 507 xemacs_c_alloca (0); | |
| 508 | |
| 793 | 509 return val; |
| 428 | 510 } |
| 2720 | 511 #endif /* not MC_ALLOC */ |
| 512 | |
| 513 #ifdef MC_ALLOC_TYPE_STATS | |
| 514 static struct | |
| 515 { | |
| 516 int instances_in_use; | |
| 517 int bytes_in_use; | |
| 518 int bytes_in_use_including_overhead; | |
| 519 } lrecord_stats [countof (lrecord_implementations_table) | |
| 520 + MODULE_DEFINABLE_TYPE_COUNT]; | |
| 521 | |
| 522 void | |
| 523 init_lrecord_stats () | |
| 524 { | |
| 525 xzero (lrecord_stats); | |
| 526 } | |
| 527 | |
| 528 void | |
| 529 inc_lrecord_stats (Bytecount size, const struct lrecord_header *h) | |
| 530 { | |
| 531 int type_index = h->type; | |
| 532 if (!size) | |
| 533 size = detagged_lisp_object_size (h); | |
| 534 | |
| 535 lrecord_stats[type_index].instances_in_use++; | |
| 536 lrecord_stats[type_index].bytes_in_use += size; | |
| 537 lrecord_stats[type_index].bytes_in_use_including_overhead | |
| 538 #ifdef MEMORY_USAGE_STATS | |
| 539 += mc_alloced_storage_size (size, 0); | |
| 540 #else /* not MEMORY_USAGE_STATS */ | |
| 541 += size; | |
| 542 #endif /* not MEMORY_USAGE_STATS */ | |
| 543 } | |
| 544 | |
| 545 void | |
| 546 dec_lrecord_stats (Bytecount size_including_overhead, | |
| 547 const struct lrecord_header *h) | |
| 548 { | |
| 549 int type_index = h->type; | |
| 550 | |
| 551 lrecord_stats[type_index].instances_in_use--; | |
| 552 lrecord_stats[type_index].bytes_in_use -= detagged_lisp_object_size (h); | |
| 553 lrecord_stats[type_index].bytes_in_use_including_overhead | |
| 554 -= size_including_overhead; | |
| 555 | |
| 556 DECREMENT_CONS_COUNTER (lrecord_stats[type_index].bytes_in_use); | |
| 557 } | |
| 558 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 559 | |
| 560 #ifndef MC_ALLOC | |
| 442 | 561 /* lcrecords are chained together through their "next" field. |
| 562 After doing the mark phase, GC will walk this linked list | |
| 563 and free any lcrecord which hasn't been marked. */ | |
| 428 | 564 static struct lcrecord_header *all_lcrecords; |
| 2720 | 565 #endif /* not MC_ALLOC */ |
| 566 | |
| 567 #ifdef MC_ALLOC | |
| 568 /* The basic lrecord allocation functions. See lrecord.h for details. */ | |
| 569 void * | |
| 570 alloc_lrecord (Bytecount size, | |
| 571 const struct lrecord_implementation *implementation) | |
| 572 { | |
| 573 struct lrecord_header *lheader; | |
| 574 | |
| 575 type_checking_assert | |
| 576 ((implementation->static_size == 0 ? | |
| 577 implementation->size_in_bytes_method != NULL : | |
| 578 implementation->static_size == size)); | |
| 579 | |
| 580 lheader = (struct lrecord_header *) mc_alloc (size); | |
| 581 gc_checking_assert (LRECORD_FREE_P (lheader)); | |
| 582 set_lheader_implementation (lheader, implementation); | |
| 583 lheader->uid = lrecord_uid_counter++; | |
| 584 #ifdef MC_ALLOC_TYPE_STATS | |
| 585 inc_lrecord_stats (size, lheader); | |
| 586 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 587 INCREMENT_CONS_COUNTER (size, implementation->name); | |
| 588 return lheader; | |
| 589 } | |
| 590 | |
| 591 void * | |
| 592 noseeum_alloc_lrecord (Bytecount size, | |
| 593 const struct lrecord_implementation *implementation) | |
| 594 { | |
| 595 struct lrecord_header *lheader; | |
| 596 | |
| 597 type_checking_assert | |
| 598 ((implementation->static_size == 0 ? | |
| 599 implementation->size_in_bytes_method != NULL : | |
| 600 implementation->static_size == size)); | |
| 601 | |
| 602 lheader = (struct lrecord_header *) mc_alloc (size); | |
| 603 gc_checking_assert (LRECORD_FREE_P (lheader)); | |
| 604 set_lheader_implementation (lheader, implementation); | |
| 605 lheader->uid = lrecord_uid_counter++; | |
| 606 #ifdef MC_ALLOC_TYPE_STATS | |
| 607 inc_lrecord_stats (size, lheader); | |
| 608 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 609 NOSEEUM_INCREMENT_CONS_COUNTER (size, implementation->name); | |
| 610 return lheader; | |
| 611 } | |
| 612 | |
| 613 void | |
| 614 free_lrecord (Lisp_Object lrecord) | |
| 615 { | |
| 616 gc_checking_assert (!gc_in_progress); | |
| 617 gc_checking_assert (!LRECORD_FREE_P (XRECORD_LHEADER (lrecord))); | |
| 618 gc_checking_assert (!XRECORD_LHEADER (lrecord)->free); | |
| 619 | |
| 620 MC_ALLOC_CALL_FINALIZER (XPNTR (lrecord)); | |
| 621 mc_free (XPNTR (lrecord)); | |
| 622 } | |
| 623 #else /* not MC_ALLOC */ | |
| 428 | 624 |
| 1204 | 625 /* The most basic of the lcrecord allocation functions. Not usually called |
| 626 directly. Allocates an lrecord not managed by any lcrecord-list, of a | |
| 627 specified size. See lrecord.h. */ | |
| 628 | |
| 428 | 629 void * |
| 1204 | 630 basic_alloc_lcrecord (Bytecount size, |
| 631 const struct lrecord_implementation *implementation) | |
| 428 | 632 { |
| 633 struct lcrecord_header *lcheader; | |
| 634 | |
| 442 | 635 type_checking_assert |
| 636 ((implementation->static_size == 0 ? | |
| 637 implementation->size_in_bytes_method != NULL : | |
| 638 implementation->static_size == size) | |
| 639 && | |
| 640 (! implementation->basic_p) | |
| 641 && | |
| 642 (! (implementation->hash == NULL && implementation->equal != NULL))); | |
| 428 | 643 |
| 644 lcheader = (struct lcrecord_header *) allocate_lisp_storage (size); | |
| 442 | 645 set_lheader_implementation (&lcheader->lheader, implementation); |
| 428 | 646 lcheader->next = all_lcrecords; |
| 647 #if 1 /* mly prefers to see small ID numbers */ | |
| 648 lcheader->uid = lrecord_uid_counter++; | |
| 649 #else /* jwz prefers to see real addrs */ | |
| 650 lcheader->uid = (int) &lcheader; | |
| 651 #endif | |
| 652 lcheader->free = 0; | |
| 653 all_lcrecords = lcheader; | |
| 654 INCREMENT_CONS_COUNTER (size, implementation->name); | |
| 655 return lcheader; | |
| 656 } | |
| 657 | |
| 658 #if 0 /* Presently unused */ | |
| 659 /* Very, very poor man's EGC? | |
| 660 * This may be slow and thrash pages all over the place. | |
| 661 * Only call it if you really feel you must (and if the | |
| 662 * lrecord was fairly recently allocated). | |
| 663 * Otherwise, just let the GC do its job -- that's what it's there for | |
| 664 */ | |
| 665 void | |
| 771 | 666 very_old_free_lcrecord (struct lcrecord_header *lcrecord) |
| 428 | 667 { |
| 668 if (all_lcrecords == lcrecord) | |
| 669 { | |
| 670 all_lcrecords = lcrecord->next; | |
| 671 } | |
| 672 else | |
| 673 { | |
| 674 struct lrecord_header *header = all_lcrecords; | |
| 675 for (;;) | |
| 676 { | |
| 677 struct lrecord_header *next = header->next; | |
| 678 if (next == lcrecord) | |
| 679 { | |
| 680 header->next = lrecord->next; | |
| 681 break; | |
| 682 } | |
| 683 else if (next == 0) | |
| 2500 | 684 ABORT (); |
| 428 | 685 else |
| 686 header = next; | |
| 687 } | |
| 688 } | |
| 689 if (lrecord->implementation->finalizer) | |
| 690 lrecord->implementation->finalizer (lrecord, 0); | |
| 691 xfree (lrecord); | |
| 692 return; | |
| 693 } | |
| 694 #endif /* Unused */ | |
| 2720 | 695 #endif /* not MC_ALLOC */ |
| 428 | 696 |
| 697 | |
| 698 static void | |
| 699 disksave_object_finalization_1 (void) | |
| 700 { | |
| 2720 | 701 #ifdef MC_ALLOC |
| 702 mc_finalize_for_disksave (); | |
| 703 #else /* not MC_ALLOC */ | |
| 428 | 704 struct lcrecord_header *header; |
| 705 | |
| 706 for (header = all_lcrecords; header; header = header->next) | |
| 707 { | |
| 442 | 708 if (LHEADER_IMPLEMENTATION (&header->lheader)->finalizer && |
| 428 | 709 !header->free) |
| 442 | 710 LHEADER_IMPLEMENTATION (&header->lheader)->finalizer (header, 1); |
| 428 | 711 } |
| 2720 | 712 #endif /* not MC_ALLOC */ |
| 428 | 713 } |
| 714 | |
| 1204 | 715 /* Bitwise copy all parts of a Lisp object other than the header */ |
| 716 | |
| 717 void | |
| 718 copy_lisp_object (Lisp_Object dst, Lisp_Object src) | |
| 719 { | |
| 720 const struct lrecord_implementation *imp = | |
| 721 XRECORD_LHEADER_IMPLEMENTATION (src); | |
| 722 Bytecount size = lisp_object_size (src); | |
| 723 | |
| 724 assert (imp == XRECORD_LHEADER_IMPLEMENTATION (dst)); | |
| 725 assert (size == lisp_object_size (dst)); | |
| 726 | |
| 2720 | 727 #ifdef MC_ALLOC |
| 728 memcpy ((char *) XRECORD_LHEADER (dst) + sizeof (struct lrecord_header), | |
| 729 (char *) XRECORD_LHEADER (src) + sizeof (struct lrecord_header), | |
| 730 size - sizeof (struct lrecord_header)); | |
| 731 #else /* not MC_ALLOC */ | |
| 1204 | 732 if (imp->basic_p) |
| 733 memcpy ((char *) XRECORD_LHEADER (dst) + sizeof (struct lrecord_header), | |
| 734 (char *) XRECORD_LHEADER (src) + sizeof (struct lrecord_header), | |
| 735 size - sizeof (struct lrecord_header)); | |
| 736 else | |
| 737 memcpy ((char *) XRECORD_LHEADER (dst) + sizeof (struct lcrecord_header), | |
| 738 (char *) XRECORD_LHEADER (src) + sizeof (struct lcrecord_header), | |
| 739 size - sizeof (struct lcrecord_header)); | |
| 2720 | 740 #endif /* not MC_ALLOC */ |
| 1204 | 741 } |
| 742 | |
| 428 | 743 |
| 744 /************************************************************************/ | |
| 745 /* Debugger support */ | |
| 746 /************************************************************************/ | |
| 747 /* Give gdb/dbx enough information to decode Lisp Objects. We make | |
| 748 sure certain symbols are always defined, so gdb doesn't complain | |
| 438 | 749 about expressions in src/.gdbinit. See src/.gdbinit or src/.dbxrc |
| 750 to see how this is used. */ | |
| 428 | 751 |
| 458 | 752 EMACS_UINT dbg_valmask = ((1UL << VALBITS) - 1) << GCBITS; |
| 753 EMACS_UINT dbg_typemask = (1UL << GCTYPEBITS) - 1; | |
| 428 | 754 |
| 755 #ifdef USE_UNION_TYPE | |
| 458 | 756 unsigned char dbg_USE_UNION_TYPE = 1; |
| 428 | 757 #else |
| 458 | 758 unsigned char dbg_USE_UNION_TYPE = 0; |
| 428 | 759 #endif |
| 760 | |
| 458 | 761 unsigned char dbg_valbits = VALBITS; |
| 762 unsigned char dbg_gctypebits = GCTYPEBITS; | |
| 763 | |
| 764 /* On some systems, the above definitions will be optimized away by | |
| 765 the compiler or linker unless they are referenced in some function. */ | |
| 766 long dbg_inhibit_dbg_symbol_deletion (void); | |
| 767 long | |
| 768 dbg_inhibit_dbg_symbol_deletion (void) | |
| 769 { | |
| 770 return | |
| 771 (dbg_valmask + | |
| 772 dbg_typemask + | |
| 773 dbg_USE_UNION_TYPE + | |
| 774 dbg_valbits + | |
| 775 dbg_gctypebits); | |
| 776 } | |
| 428 | 777 |
| 778 /* Macros turned into functions for ease of debugging. | |
| 779 Debuggers don't know about macros! */ | |
| 780 int dbg_eq (Lisp_Object obj1, Lisp_Object obj2); | |
| 781 int | |
| 782 dbg_eq (Lisp_Object obj1, Lisp_Object obj2) | |
| 783 { | |
| 784 return EQ (obj1, obj2); | |
| 785 } | |
| 786 | |
| 787 | |
| 2720 | 788 #ifndef MC_ALLOC |
| 428 | 789 /************************************************************************/ |
| 790 /* Fixed-size type macros */ | |
| 791 /************************************************************************/ | |
| 792 | |
| 793 /* For fixed-size types that are commonly used, we malloc() large blocks | |
| 794 of memory at a time and subdivide them into chunks of the correct | |
| 795 size for an object of that type. This is more efficient than | |
| 796 malloc()ing each object separately because we save on malloc() time | |
| 797 and overhead due to the fewer number of malloc()ed blocks, and | |
| 798 also because we don't need any extra pointers within each object | |
| 799 to keep them threaded together for GC purposes. For less common | |
| 800 (and frequently large-size) types, we use lcrecords, which are | |
| 801 malloc()ed individually and chained together through a pointer | |
| 802 in the lcrecord header. lcrecords do not need to be fixed-size | |
| 803 (i.e. two objects of the same type need not have the same size; | |
| 804 however, the size of a particular object cannot vary dynamically). | |
| 805 It is also much easier to create a new lcrecord type because no | |
| 806 additional code needs to be added to alloc.c. Finally, lcrecords | |
| 807 may be more efficient when there are only a small number of them. | |
| 808 | |
| 809 The types that are stored in these large blocks (or "frob blocks") | |
| 1983 | 810 are cons, all number types except fixnum, compiled-function, symbol, |
| 811 marker, extent, event, and string. | |
| 428 | 812 |
| 813 Note that strings are special in that they are actually stored in | |
| 814 two parts: a structure containing information about the string, and | |
| 815 the actual data associated with the string. The former structure | |
| 816 (a struct Lisp_String) is a fixed-size structure and is managed the | |
| 817 same way as all the other such types. This structure contains a | |
| 818 pointer to the actual string data, which is stored in structures of | |
| 819 type struct string_chars_block. Each string_chars_block consists | |
| 820 of a pointer to a struct Lisp_String, followed by the data for that | |
| 440 | 821 string, followed by another pointer to a Lisp_String, followed by |
| 822 the data for that string, etc. At GC time, the data in these | |
| 823 blocks is compacted by searching sequentially through all the | |
| 428 | 824 blocks and compressing out any holes created by unmarked strings. |
| 825 Strings that are more than a certain size (bigger than the size of | |
| 826 a string_chars_block, although something like half as big might | |
| 827 make more sense) are malloc()ed separately and not stored in | |
| 828 string_chars_blocks. Furthermore, no one string stretches across | |
| 829 two string_chars_blocks. | |
| 830 | |
| 1204 | 831 Vectors are each malloc()ed separately as lcrecords. |
| 428 | 832 |
| 833 In the following discussion, we use conses, but it applies equally | |
| 834 well to the other fixed-size types. | |
| 835 | |
| 836 We store cons cells inside of cons_blocks, allocating a new | |
| 837 cons_block with malloc() whenever necessary. Cons cells reclaimed | |
| 838 by GC are put on a free list to be reallocated before allocating | |
| 839 any new cons cells from the latest cons_block. Each cons_block is | |
| 840 just under 2^n - MALLOC_OVERHEAD bytes long, since malloc (at least | |
| 841 the versions in malloc.c and gmalloc.c) really allocates in units | |
| 842 of powers of two and uses 4 bytes for its own overhead. | |
| 843 | |
| 844 What GC actually does is to search through all the cons_blocks, | |
| 845 from the most recently allocated to the oldest, and put all | |
| 846 cons cells that are not marked (whether or not they're already | |
| 847 free) on a cons_free_list. The cons_free_list is a stack, and | |
| 848 so the cons cells in the oldest-allocated cons_block end up | |
| 849 at the head of the stack and are the first to be reallocated. | |
| 850 If any cons_block is entirely free, it is freed with free() | |
| 851 and its cons cells removed from the cons_free_list. Because | |
| 852 the cons_free_list ends up basically in memory order, we have | |
| 853 a high locality of reference (assuming a reasonable turnover | |
| 854 of allocating and freeing) and have a reasonable probability | |
| 855 of entirely freeing up cons_blocks that have been more recently | |
| 856 allocated. This stage is called the "sweep stage" of GC, and | |
| 857 is executed after the "mark stage", which involves starting | |
| 858 from all places that are known to point to in-use Lisp objects | |
| 859 (e.g. the obarray, where are all symbols are stored; the | |
| 860 current catches and condition-cases; the backtrace list of | |
| 861 currently executing functions; the gcpro list; etc.) and | |
| 862 recursively marking all objects that are accessible. | |
| 863 | |
| 454 | 864 At the beginning of the sweep stage, the conses in the cons blocks |
| 865 are in one of three states: in use and marked, in use but not | |
| 866 marked, and not in use (already freed). Any conses that are marked | |
| 867 have been marked in the mark stage just executed, because as part | |
| 868 of the sweep stage we unmark any marked objects. The way we tell | |
| 869 whether or not a cons cell is in use is through the LRECORD_FREE_P | |
| 870 macro. This uses a special lrecord type `lrecord_type_free', | |
| 871 which is never associated with any valid object. | |
| 872 | |
| 873 Conses on the free_cons_list are threaded through a pointer stored | |
| 874 in the conses themselves. Because the cons is still in a | |
| 875 cons_block and needs to remain marked as not in use for the next | |
| 876 time that GC happens, we need room to store both the "free" | |
| 877 indicator and the chaining pointer. So this pointer is stored | |
| 878 after the lrecord header (actually where C places a pointer after | |
| 879 the lrecord header; they are not necessarily contiguous). This | |
| 880 implies that all fixed-size types must be big enough to contain at | |
| 881 least one pointer. This is true for all current fixed-size types, | |
| 882 with the possible exception of Lisp_Floats, for which we define the | |
| 883 meat of the struct using a union of a pointer and a double to | |
| 884 ensure adequate space for the free list chain pointer. | |
| 428 | 885 |
| 886 Some types of objects need additional "finalization" done | |
| 887 when an object is converted from in use to not in use; | |
| 888 this is the purpose of the ADDITIONAL_FREE_type macro. | |
| 889 For example, markers need to be removed from the chain | |
| 890 of markers that is kept in each buffer. This is because | |
| 891 markers in a buffer automatically disappear if the marker | |
| 892 is no longer referenced anywhere (the same does not | |
| 893 apply to extents, however). | |
| 894 | |
| 895 WARNING: Things are in an extremely bizarre state when | |
| 896 the ADDITIONAL_FREE_type macros are called, so beware! | |
| 897 | |
| 454 | 898 When ERROR_CHECK_GC is defined, we do things differently so as to |
| 899 maximize our chances of catching places where there is insufficient | |
| 900 GCPROing. The thing we want to avoid is having an object that | |
| 901 we're using but didn't GCPRO get freed by GC and then reallocated | |
| 902 while we're in the process of using it -- this will result in | |
| 903 something seemingly unrelated getting trashed, and is extremely | |
| 904 difficult to track down. If the object gets freed but not | |
| 905 reallocated, we can usually catch this because we set most of the | |
| 906 bytes of a freed object to 0xDEADBEEF. (The lisp object type is set | |
| 907 to the invalid type `lrecord_type_free', however, and a pointer | |
| 908 used to chain freed objects together is stored after the lrecord | |
| 909 header; we play some tricks with this pointer to make it more | |
| 428 | 910 bogus, so crashes are more likely to occur right away.) |
| 911 | |
| 912 We want freed objects to stay free as long as possible, | |
| 913 so instead of doing what we do above, we maintain the | |
| 914 free objects in a first-in first-out queue. We also | |
| 915 don't recompute the free list each GC, unlike above; | |
| 916 this ensures that the queue ordering is preserved. | |
| 917 [This means that we are likely to have worse locality | |
| 918 of reference, and that we can never free a frob block | |
| 919 once it's allocated. (Even if we know that all cells | |
| 920 in it are free, there's no easy way to remove all those | |
| 921 cells from the free list because the objects on the | |
| 922 free list are unlikely to be in memory order.)] | |
| 923 Furthermore, we never take objects off the free list | |
| 924 unless there's a large number (usually 1000, but | |
| 925 varies depending on type) of them already on the list. | |
| 926 This way, we ensure that an object that gets freed will | |
| 927 remain free for the next 1000 (or whatever) times that | |
| 440 | 928 an object of that type is allocated. */ |
| 428 | 929 |
| 930 #ifndef MALLOC_OVERHEAD | |
| 931 #ifdef GNU_MALLOC | |
| 932 #define MALLOC_OVERHEAD 0 | |
| 933 #elif defined (rcheck) | |
| 934 #define MALLOC_OVERHEAD 20 | |
| 935 #else | |
| 936 #define MALLOC_OVERHEAD 8 | |
| 937 #endif | |
| 938 #endif /* MALLOC_OVERHEAD */ | |
| 939 | |
| 940 #if !defined(HAVE_MMAP) || defined(DOUG_LEA_MALLOC) | |
| 941 /* If we released our reserve (due to running out of memory), | |
| 942 and we have a fair amount free once again, | |
| 943 try to set aside another reserve in case we run out once more. | |
| 944 | |
| 945 This is called when a relocatable block is freed in ralloc.c. */ | |
| 946 void refill_memory_reserve (void); | |
| 947 void | |
| 442 | 948 refill_memory_reserve (void) |
| 428 | 949 { |
| 950 if (breathing_space == 0) | |
| 951 breathing_space = (char *) malloc (4096 - MALLOC_OVERHEAD); | |
| 952 } | |
| 953 #endif | |
| 954 | |
| 955 #ifdef ALLOC_NO_POOLS | |
| 956 # define TYPE_ALLOC_SIZE(type, structtype) 1 | |
| 957 #else | |
| 958 # define TYPE_ALLOC_SIZE(type, structtype) \ | |
| 959 ((2048 - MALLOC_OVERHEAD - sizeof (struct type##_block *)) \ | |
| 960 / sizeof (structtype)) | |
| 961 #endif /* ALLOC_NO_POOLS */ | |
| 962 | |
| 963 #define DECLARE_FIXED_TYPE_ALLOC(type, structtype) \ | |
| 964 \ | |
| 965 struct type##_block \ | |
| 966 { \ | |
| 967 struct type##_block *prev; \ | |
| 968 structtype block[TYPE_ALLOC_SIZE (type, structtype)]; \ | |
| 969 }; \ | |
| 970 \ | |
| 971 static struct type##_block *current_##type##_block; \ | |
| 972 static int current_##type##_block_index; \ | |
| 973 \ | |
| 454 | 974 static Lisp_Free *type##_free_list; \ |
| 975 static Lisp_Free *type##_free_list_tail; \ | |
| 428 | 976 \ |
| 977 static void \ | |
| 978 init_##type##_alloc (void) \ | |
| 979 { \ | |
| 980 current_##type##_block = 0; \ | |
| 981 current_##type##_block_index = \ | |
| 982 countof (current_##type##_block->block); \ | |
| 983 type##_free_list = 0; \ | |
| 984 type##_free_list_tail = 0; \ | |
| 985 } \ | |
| 986 \ | |
| 987 static int gc_count_num_##type##_in_use; \ | |
| 988 static int gc_count_num_##type##_freelist | |
| 989 | |
| 990 #define ALLOCATE_FIXED_TYPE_FROM_BLOCK(type, result) do { \ | |
| 991 if (current_##type##_block_index \ | |
| 992 == countof (current_##type##_block->block)) \ | |
| 993 { \ | |
| 994 struct type##_block *AFTFB_new = (struct type##_block *) \ | |
| 995 allocate_lisp_storage (sizeof (struct type##_block)); \ | |
| 996 AFTFB_new->prev = current_##type##_block; \ | |
| 997 current_##type##_block = AFTFB_new; \ | |
| 998 current_##type##_block_index = 0; \ | |
| 999 } \ | |
| 1000 (result) = \ | |
| 1001 &(current_##type##_block->block[current_##type##_block_index++]); \ | |
| 1002 } while (0) | |
| 1003 | |
| 1004 /* Allocate an instance of a type that is stored in blocks. | |
| 1005 TYPE is the "name" of the type, STRUCTTYPE is the corresponding | |
| 1006 structure type. */ | |
| 1007 | |
| 1008 #ifdef ERROR_CHECK_GC | |
| 1009 | |
| 1010 /* Note: if you get crashes in this function, suspect incorrect calls | |
| 1011 to free_cons() and friends. This happened once because the cons | |
| 1012 cell was not GC-protected and was getting collected before | |
| 1013 free_cons() was called. */ | |
| 1014 | |
| 454 | 1015 #define ALLOCATE_FIXED_TYPE_1(type, structtype, result) do { \ |
| 1016 if (gc_count_num_##type##_freelist > \ | |
| 1017 MINIMUM_ALLOWED_FIXED_TYPE_CELLS_##type) \ | |
| 1018 { \ | |
| 1019 result = (structtype *) type##_free_list; \ | |
| 1204 | 1020 assert (LRECORD_FREE_P (result)); \ |
| 1021 /* Before actually using the chain pointer, we complement \ | |
| 1022 all its bits; see PUT_FIXED_TYPE_ON_FREE_LIST(). */ \ | |
| 454 | 1023 type##_free_list = (Lisp_Free *) \ |
| 1024 (~ (EMACS_UINT) (type##_free_list->chain)); \ | |
| 1025 gc_count_num_##type##_freelist--; \ | |
| 1026 } \ | |
| 1027 else \ | |
| 1028 ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result); \ | |
| 1029 MARK_LRECORD_AS_NOT_FREE (result); \ | |
| 428 | 1030 } while (0) |
| 1031 | |
| 1032 #else /* !ERROR_CHECK_GC */ | |
| 1033 | |
| 454 | 1034 #define ALLOCATE_FIXED_TYPE_1(type, structtype, result) do { \ |
| 428 | 1035 if (type##_free_list) \ |
| 1036 { \ | |
| 454 | 1037 result = (structtype *) type##_free_list; \ |
| 1038 type##_free_list = type##_free_list->chain; \ | |
| 428 | 1039 } \ |
| 1040 else \ | |
| 1041 ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result); \ | |
| 454 | 1042 MARK_LRECORD_AS_NOT_FREE (result); \ |
| 428 | 1043 } while (0) |
| 1044 | |
| 1045 #endif /* !ERROR_CHECK_GC */ | |
| 1046 | |
| 454 | 1047 |
| 428 | 1048 #define ALLOCATE_FIXED_TYPE(type, structtype, result) \ |
| 1049 do \ | |
| 1050 { \ | |
| 1051 ALLOCATE_FIXED_TYPE_1 (type, structtype, result); \ | |
| 1052 INCREMENT_CONS_COUNTER (sizeof (structtype), #type); \ | |
| 1053 } while (0) | |
| 1054 | |
| 1055 #define NOSEEUM_ALLOCATE_FIXED_TYPE(type, structtype, result) \ | |
| 1056 do \ | |
| 1057 { \ | |
| 1058 ALLOCATE_FIXED_TYPE_1 (type, structtype, result); \ | |
| 1059 NOSEEUM_INCREMENT_CONS_COUNTER (sizeof (structtype), #type); \ | |
| 1060 } while (0) | |
| 1061 | |
| 454 | 1062 |
| 1063 /* Lisp_Free is the type to represent a free list member inside a frob | |
| 1064 block of any lisp object type. */ | |
| 1065 typedef struct Lisp_Free | |
| 1066 { | |
| 1067 struct lrecord_header lheader; | |
| 1068 struct Lisp_Free *chain; | |
| 1069 } Lisp_Free; | |
| 1070 | |
| 1071 #define LRECORD_FREE_P(ptr) \ | |
| 771 | 1072 (((struct lrecord_header *) ptr)->type == lrecord_type_free) |
| 454 | 1073 |
| 1074 #define MARK_LRECORD_AS_FREE(ptr) \ | |
| 771 | 1075 ((void) (((struct lrecord_header *) ptr)->type = lrecord_type_free)) |
| 454 | 1076 |
| 1077 #ifdef ERROR_CHECK_GC | |
| 1078 #define MARK_LRECORD_AS_NOT_FREE(ptr) \ | |
| 771 | 1079 ((void) (((struct lrecord_header *) ptr)->type = lrecord_type_undefined)) |
| 428 | 1080 #else |
| 454 | 1081 #define MARK_LRECORD_AS_NOT_FREE(ptr) DO_NOTHING |
| 428 | 1082 #endif |
| 1083 | |
| 1084 #ifdef ERROR_CHECK_GC | |
| 1085 | |
| 454 | 1086 #define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr) do { \ |
| 1087 if (type##_free_list_tail) \ | |
| 1088 { \ | |
| 1089 /* When we store the chain pointer, we complement all \ | |
| 1090 its bits; this should significantly increase its \ | |
| 1091 bogosity in case someone tries to use the value, and \ | |
| 1092 should make us crash faster if someone overwrites the \ | |
| 1093 pointer because when it gets un-complemented in \ | |
| 1094 ALLOCATED_FIXED_TYPE(), the resulting pointer will be \ | |
| 1095 extremely bogus. */ \ | |
| 1096 type##_free_list_tail->chain = \ | |
| 1097 (Lisp_Free *) ~ (EMACS_UINT) (ptr); \ | |
| 1098 } \ | |
| 1099 else \ | |
| 1100 type##_free_list = (Lisp_Free *) (ptr); \ | |
| 1101 type##_free_list_tail = (Lisp_Free *) (ptr); \ | |
| 1102 } while (0) | |
| 428 | 1103 |
| 1104 #else /* !ERROR_CHECK_GC */ | |
| 1105 | |
| 454 | 1106 #define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr) do { \ |
| 1107 ((Lisp_Free *) (ptr))->chain = type##_free_list; \ | |
| 1108 type##_free_list = (Lisp_Free *) (ptr); \ | |
| 1109 } while (0) \ | |
| 428 | 1110 |
| 1111 #endif /* !ERROR_CHECK_GC */ | |
| 1112 | |
| 1113 /* TYPE and STRUCTTYPE are the same as in ALLOCATE_FIXED_TYPE(). */ | |
| 1114 | |
| 1115 #define FREE_FIXED_TYPE(type, structtype, ptr) do { \ | |
| 1116 structtype *FFT_ptr = (ptr); \ | |
| 1204 | 1117 gc_checking_assert (!LRECORD_FREE_P (FFT_ptr)); \ |
| 2367 | 1118 gc_checking_assert (!DUMPEDP (FFT_ptr)); \ |
| 428 | 1119 ADDITIONAL_FREE_##type (FFT_ptr); \ |
| 1120 deadbeef_memory (FFT_ptr, sizeof (structtype)); \ | |
| 1121 PUT_FIXED_TYPE_ON_FREE_LIST (type, structtype, FFT_ptr); \ | |
| 454 | 1122 MARK_LRECORD_AS_FREE (FFT_ptr); \ |
| 428 | 1123 } while (0) |
| 1124 | |
| 1125 /* Like FREE_FIXED_TYPE() but used when we are explicitly | |
| 1126 freeing a structure through free_cons(), free_marker(), etc. | |
| 1127 rather than through the normal process of sweeping. | |
| 1128 We attempt to undo the changes made to the allocation counters | |
| 1129 as a result of this structure being allocated. This is not | |
| 1130 completely necessary but helps keep things saner: e.g. this way, | |
| 1131 repeatedly allocating and freeing a cons will not result in | |
| 1132 the consing-since-gc counter advancing, which would cause a GC | |
| 1204 | 1133 and somewhat defeat the purpose of explicitly freeing. |
| 1134 | |
| 1135 We also disable this mechanism entirely when ALLOC_NO_POOLS is | |
| 1136 set, which is used for Purify and the like. */ | |
| 1137 | |
| 1138 #ifndef ALLOC_NO_POOLS | |
| 428 | 1139 #define FREE_FIXED_TYPE_WHEN_NOT_IN_GC(type, structtype, ptr) \ |
| 1140 do { FREE_FIXED_TYPE (type, structtype, ptr); \ | |
| 1141 DECREMENT_CONS_COUNTER (sizeof (structtype)); \ | |
| 1142 gc_count_num_##type##_freelist++; \ | |
| 1143 } while (0) | |
| 1204 | 1144 #else |
| 1145 #define FREE_FIXED_TYPE_WHEN_NOT_IN_GC(type, structtype, ptr) | |
| 1146 #endif | |
| 2720 | 1147 #endif /* not MC_ALLOC */ |
| 428 | 1148 |
| 1149 | |
| 1150 | |
| 1151 /************************************************************************/ | |
| 1152 /* Cons allocation */ | |
| 1153 /************************************************************************/ | |
| 1154 | |
| 2720 | 1155 #ifndef MC_ALLOC |
| 440 | 1156 DECLARE_FIXED_TYPE_ALLOC (cons, Lisp_Cons); |
| 428 | 1157 /* conses are used and freed so often that we set this really high */ |
| 1158 /* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 20000 */ | |
| 1159 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 2000 | |
| 2720 | 1160 #endif /* not MC_ALLOC */ |
| 428 | 1161 |
| 1162 static Lisp_Object | |
| 1163 mark_cons (Lisp_Object obj) | |
| 1164 { | |
| 1165 if (NILP (XCDR (obj))) | |
| 1166 return XCAR (obj); | |
| 1167 | |
| 1168 mark_object (XCAR (obj)); | |
| 1169 return XCDR (obj); | |
| 1170 } | |
| 1171 | |
| 1172 static int | |
| 1173 cons_equal (Lisp_Object ob1, Lisp_Object ob2, int depth) | |
| 1174 { | |
| 442 | 1175 depth++; |
| 1176 while (internal_equal (XCAR (ob1), XCAR (ob2), depth)) | |
| 428 | 1177 { |
| 1178 ob1 = XCDR (ob1); | |
| 1179 ob2 = XCDR (ob2); | |
| 1180 if (! CONSP (ob1) || ! CONSP (ob2)) | |
| 442 | 1181 return internal_equal (ob1, ob2, depth); |
| 428 | 1182 } |
| 1183 return 0; | |
| 1184 } | |
| 1185 | |
| 1204 | 1186 static const struct memory_description cons_description[] = { |
| 853 | 1187 { XD_LISP_OBJECT, offsetof (Lisp_Cons, car_) }, |
| 1188 { XD_LISP_OBJECT, offsetof (Lisp_Cons, cdr_) }, | |
| 428 | 1189 { XD_END } |
| 1190 }; | |
| 1191 | |
| 934 | 1192 DEFINE_BASIC_LRECORD_IMPLEMENTATION ("cons", cons, |
| 1193 1, /*dumpable-flag*/ | |
| 1194 mark_cons, print_cons, 0, | |
| 1195 cons_equal, | |
| 1196 /* | |
| 1197 * No `hash' method needed. | |
| 1198 * internal_hash knows how to | |
| 1199 * handle conses. | |
| 1200 */ | |
| 1201 0, | |
| 1202 cons_description, | |
| 1203 Lisp_Cons); | |
| 428 | 1204 |
| 1205 DEFUN ("cons", Fcons, 2, 2, 0, /* | |
| 1206 Create a new cons, give it CAR and CDR as components, and return it. | |
| 1207 */ | |
| 1208 (car, cdr)) | |
| 1209 { | |
| 1210 /* This cannot GC. */ | |
| 1211 Lisp_Object val; | |
| 440 | 1212 Lisp_Cons *c; |
| 1213 | |
| 2720 | 1214 #ifdef MC_ALLOC |
| 1215 c = alloc_lrecord_type (Lisp_Cons, &lrecord_cons); | |
| 1216 #else /* not MC_ALLOC */ | |
| 440 | 1217 ALLOCATE_FIXED_TYPE (cons, Lisp_Cons, c); |
| 442 | 1218 set_lheader_implementation (&c->lheader, &lrecord_cons); |
| 2720 | 1219 #endif /* not MC_ALLOC */ |
| 793 | 1220 val = wrap_cons (c); |
| 853 | 1221 XSETCAR (val, car); |
| 1222 XSETCDR (val, cdr); | |
| 428 | 1223 return val; |
| 1224 } | |
| 1225 | |
| 1226 /* This is identical to Fcons() but it used for conses that we're | |
| 1227 going to free later, and is useful when trying to track down | |
| 1228 "real" consing. */ | |
| 1229 Lisp_Object | |
| 1230 noseeum_cons (Lisp_Object car, Lisp_Object cdr) | |
| 1231 { | |
| 1232 Lisp_Object val; | |
| 440 | 1233 Lisp_Cons *c; |
| 1234 | |
| 2720 | 1235 #ifdef MC_ALLOC |
| 1236 c = noseeum_alloc_lrecord_type (Lisp_Cons, &lrecord_cons); | |
| 1237 #else /* not MC_ALLOC */ | |
| 440 | 1238 NOSEEUM_ALLOCATE_FIXED_TYPE (cons, Lisp_Cons, c); |
| 442 | 1239 set_lheader_implementation (&c->lheader, &lrecord_cons); |
| 2720 | 1240 #endif /* not MC_ALLOC */ |
| 793 | 1241 val = wrap_cons (c); |
| 428 | 1242 XCAR (val) = car; |
| 1243 XCDR (val) = cdr; | |
| 1244 return val; | |
| 1245 } | |
| 1246 | |
| 1247 DEFUN ("list", Flist, 0, MANY, 0, /* | |
| 1248 Return a newly created list with specified arguments as elements. | |
| 1249 Any number of arguments, even zero arguments, are allowed. | |
| 1250 */ | |
| 1251 (int nargs, Lisp_Object *args)) | |
| 1252 { | |
| 1253 Lisp_Object val = Qnil; | |
| 1254 Lisp_Object *argp = args + nargs; | |
| 1255 | |
| 1256 while (argp > args) | |
| 1257 val = Fcons (*--argp, val); | |
| 1258 return val; | |
| 1259 } | |
| 1260 | |
| 1261 Lisp_Object | |
| 1262 list1 (Lisp_Object obj0) | |
| 1263 { | |
| 1264 /* This cannot GC. */ | |
| 1265 return Fcons (obj0, Qnil); | |
| 1266 } | |
| 1267 | |
| 1268 Lisp_Object | |
| 1269 list2 (Lisp_Object obj0, Lisp_Object obj1) | |
| 1270 { | |
| 1271 /* This cannot GC. */ | |
| 1272 return Fcons (obj0, Fcons (obj1, Qnil)); | |
| 1273 } | |
| 1274 | |
| 1275 Lisp_Object | |
| 1276 list3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2) | |
| 1277 { | |
| 1278 /* This cannot GC. */ | |
| 1279 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Qnil))); | |
| 1280 } | |
| 1281 | |
| 1282 Lisp_Object | |
| 1283 cons3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2) | |
| 1284 { | |
| 1285 /* This cannot GC. */ | |
| 1286 return Fcons (obj0, Fcons (obj1, obj2)); | |
| 1287 } | |
| 1288 | |
| 1289 Lisp_Object | |
| 1290 acons (Lisp_Object key, Lisp_Object value, Lisp_Object alist) | |
| 1291 { | |
| 1292 return Fcons (Fcons (key, value), alist); | |
| 1293 } | |
| 1294 | |
| 1295 Lisp_Object | |
| 1296 list4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3) | |
| 1297 { | |
| 1298 /* This cannot GC. */ | |
| 1299 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Qnil)))); | |
| 1300 } | |
| 1301 | |
| 1302 Lisp_Object | |
| 1303 list5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3, | |
| 1304 Lisp_Object obj4) | |
| 1305 { | |
| 1306 /* This cannot GC. */ | |
| 1307 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Qnil))))); | |
| 1308 } | |
| 1309 | |
| 1310 Lisp_Object | |
| 1311 list6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3, | |
| 1312 Lisp_Object obj4, Lisp_Object obj5) | |
| 1313 { | |
| 1314 /* This cannot GC. */ | |
| 1315 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Fcons (obj5, Qnil)))))); | |
| 1316 } | |
| 1317 | |
| 1318 DEFUN ("make-list", Fmake_list, 2, 2, 0, /* | |
| 444 | 1319 Return a new list of length LENGTH, with each element being OBJECT. |
| 428 | 1320 */ |
| 444 | 1321 (length, object)) |
| 428 | 1322 { |
| 1323 CHECK_NATNUM (length); | |
| 1324 | |
| 1325 { | |
| 1326 Lisp_Object val = Qnil; | |
| 647 | 1327 EMACS_INT size = XINT (length); |
| 428 | 1328 |
| 1329 while (size--) | |
| 444 | 1330 val = Fcons (object, val); |
| 428 | 1331 return val; |
| 1332 } | |
| 1333 } | |
| 1334 | |
| 1335 | |
| 1336 /************************************************************************/ | |
| 1337 /* Float allocation */ | |
| 1338 /************************************************************************/ | |
| 1339 | |
| 1983 | 1340 /*** With enhanced number support, these are short floats */ |
| 1341 | |
| 2720 | 1342 #ifndef MC_ALLOC |
| 440 | 1343 DECLARE_FIXED_TYPE_ALLOC (float, Lisp_Float); |
| 428 | 1344 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_float 1000 |
| 2720 | 1345 #endif /* not MC_ALLOC */ |
| 428 | 1346 |
| 1347 Lisp_Object | |
| 1348 make_float (double float_value) | |
| 1349 { | |
| 440 | 1350 Lisp_Float *f; |
| 1351 | |
| 2720 | 1352 #ifdef MC_ALLOC |
| 1353 f = alloc_lrecord_type (Lisp_Float, &lrecord_float); | |
| 1354 #else /* not MC_ALLOC */ | |
| 440 | 1355 ALLOCATE_FIXED_TYPE (float, Lisp_Float, f); |
| 1356 | |
| 1357 /* Avoid dump-time `uninitialized memory read' purify warnings. */ | |
| 1358 if (sizeof (struct lrecord_header) + sizeof (double) != sizeof (*f)) | |
| 1359 xzero (*f); | |
| 2720 | 1360 #endif /* not MC_ALLOC */ |
| 440 | 1361 |
| 442 | 1362 set_lheader_implementation (&f->lheader, &lrecord_float); |
| 428 | 1363 float_data (f) = float_value; |
| 793 | 1364 return wrap_float (f); |
| 428 | 1365 } |
| 1366 | |
| 1367 | |
| 1368 /************************************************************************/ | |
| 1983 | 1369 /* Enhanced number allocation */ |
| 1370 /************************************************************************/ | |
| 1371 | |
| 1372 /*** Bignum ***/ | |
| 1373 #ifdef HAVE_BIGNUM | |
| 2720 | 1374 #ifndef MC_ALLOC |
| 1983 | 1375 DECLARE_FIXED_TYPE_ALLOC (bignum, Lisp_Bignum); |
| 1376 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_bignum 250 | |
| 2720 | 1377 #endif /* not MC_ALLOC */ |
| 1983 | 1378 |
| 1379 /* WARNING: This function returns a bignum even if its argument fits into a | |
| 1380 fixnum. See Fcanonicalize_number(). */ | |
| 1381 Lisp_Object | |
| 1382 make_bignum (long bignum_value) | |
| 1383 { | |
| 1384 Lisp_Bignum *b; | |
| 1385 | |
| 2720 | 1386 #ifdef MC_ALLOC |
| 1387 b = alloc_lrecord_type (Lisp_Bignum, &lrecord_bignum); | |
| 1388 #else /* not MC_ALLOC */ | |
| 1983 | 1389 ALLOCATE_FIXED_TYPE (bignum, Lisp_Bignum, b); |
| 1390 set_lheader_implementation (&b->lheader, &lrecord_bignum); | |
| 2720 | 1391 #endif /* not MC_ALLOC */ |
| 1983 | 1392 bignum_init (bignum_data (b)); |
| 1393 bignum_set_long (bignum_data (b), bignum_value); | |
| 1394 return wrap_bignum (b); | |
| 1395 } | |
| 1396 | |
| 1397 /* WARNING: This function returns a bignum even if its argument fits into a | |
| 1398 fixnum. See Fcanonicalize_number(). */ | |
| 1399 Lisp_Object | |
| 1400 make_bignum_bg (bignum bg) | |
| 1401 { | |
| 1402 Lisp_Bignum *b; | |
| 1403 | |
| 2720 | 1404 #ifdef MC_ALLOC |
| 1405 b = alloc_lrecord_type (Lisp_Bignum, &lrecord_bignum); | |
| 1406 #else /* not MC_ALLOC */ | |
| 1983 | 1407 ALLOCATE_FIXED_TYPE (bignum, Lisp_Bignum, b); |
| 1408 set_lheader_implementation (&b->lheader, &lrecord_bignum); | |
| 2720 | 1409 #endif /* not MC_ALLOC */ |
| 1983 | 1410 bignum_init (bignum_data (b)); |
| 1411 bignum_set (bignum_data (b), bg); | |
| 1412 return wrap_bignum (b); | |
| 1413 } | |
| 1414 #endif /* HAVE_BIGNUM */ | |
| 1415 | |
| 1416 /*** Ratio ***/ | |
| 1417 #ifdef HAVE_RATIO | |
| 2720 | 1418 #ifndef MC_ALLOC |
| 1983 | 1419 DECLARE_FIXED_TYPE_ALLOC (ratio, Lisp_Ratio); |
| 1420 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_ratio 250 | |
| 2720 | 1421 #endif /* not MC_ALLOC */ |
| 1983 | 1422 |
| 1423 Lisp_Object | |
| 1424 make_ratio (long numerator, unsigned long denominator) | |
| 1425 { | |
| 1426 Lisp_Ratio *r; | |
| 1427 | |
| 2720 | 1428 #ifdef MC_ALLOC |
| 1429 r = alloc_lrecord_type (Lisp_Ratio, &lrecord_ratio); | |
| 1430 #else /* not MC_ALLOC */ | |
| 1983 | 1431 ALLOCATE_FIXED_TYPE (ratio, Lisp_Ratio, r); |
| 1432 set_lheader_implementation (&r->lheader, &lrecord_ratio); | |
| 2720 | 1433 #endif /* not MC_ALLOC */ |
| 1983 | 1434 ratio_init (ratio_data (r)); |
| 1435 ratio_set_long_ulong (ratio_data (r), numerator, denominator); | |
| 1436 ratio_canonicalize (ratio_data (r)); | |
| 1437 return wrap_ratio (r); | |
| 1438 } | |
| 1439 | |
| 1440 Lisp_Object | |
| 1441 make_ratio_bg (bignum numerator, bignum denominator) | |
| 1442 { | |
| 1443 Lisp_Ratio *r; | |
| 1444 | |
| 2720 | 1445 #ifdef MC_ALLOC |
| 1446 r = alloc_lrecord_type (Lisp_Ratio, &lrecord_ratio); | |
| 1447 #else /* not MC_ALLOC */ | |
| 1983 | 1448 ALLOCATE_FIXED_TYPE (ratio, Lisp_Ratio, r); |
| 1449 set_lheader_implementation (&r->lheader, &lrecord_ratio); | |
| 2720 | 1450 #endif /* not MC_ALLOC */ |
| 1983 | 1451 ratio_init (ratio_data (r)); |
| 1452 ratio_set_bignum_bignum (ratio_data (r), numerator, denominator); | |
| 1453 ratio_canonicalize (ratio_data (r)); | |
| 1454 return wrap_ratio (r); | |
| 1455 } | |
| 1456 | |
| 1457 Lisp_Object | |
| 1458 make_ratio_rt (ratio rat) | |
| 1459 { | |
| 1460 Lisp_Ratio *r; | |
| 1461 | |
| 2720 | 1462 #ifdef MC_ALLOC |
| 1463 r = alloc_lrecord_type (Lisp_Ratio, &lrecord_ratio); | |
| 1464 #else /* not MC_ALLOC */ | |
| 1983 | 1465 ALLOCATE_FIXED_TYPE (ratio, Lisp_Ratio, r); |
| 1466 set_lheader_implementation (&r->lheader, &lrecord_ratio); | |
| 2720 | 1467 #endif /* not MC_ALLOC */ |
| 1983 | 1468 ratio_init (ratio_data (r)); |
| 1469 ratio_set (ratio_data (r), rat); | |
| 1470 return wrap_ratio (r); | |
| 1471 } | |
| 1472 #endif /* HAVE_RATIO */ | |
| 1473 | |
| 1474 /*** Bigfloat ***/ | |
| 1475 #ifdef HAVE_BIGFLOAT | |
| 2720 | 1476 #ifndef MC_ALLOC |
| 1983 | 1477 DECLARE_FIXED_TYPE_ALLOC (bigfloat, Lisp_Bigfloat); |
| 1478 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_bigfloat 250 | |
| 2720 | 1479 #endif /* not MC_ALLOC */ |
| 1983 | 1480 |
| 1481 /* This function creates a bigfloat with the default precision if the | |
| 1482 PRECISION argument is zero. */ | |
| 1483 Lisp_Object | |
| 1484 make_bigfloat (double float_value, unsigned long precision) | |
| 1485 { | |
| 1486 Lisp_Bigfloat *f; | |
| 1487 | |
| 2720 | 1488 #ifdef MC_ALLOC |
| 1489 f = alloc_lrecord_type (Lisp_Bigfloat, &lrecord_bigfloat); | |
| 1490 #else /* not MC_ALLOC */ | |
| 1983 | 1491 ALLOCATE_FIXED_TYPE (bigfloat, Lisp_Bigfloat, f); |
| 1492 set_lheader_implementation (&f->lheader, &lrecord_bigfloat); | |
| 2720 | 1493 #endif /* not MC_ALLOC */ |
| 1983 | 1494 if (precision == 0UL) |
| 1495 bigfloat_init (bigfloat_data (f)); | |
| 1496 else | |
| 1497 bigfloat_init_prec (bigfloat_data (f), precision); | |
| 1498 bigfloat_set_double (bigfloat_data (f), float_value); | |
| 1499 return wrap_bigfloat (f); | |
| 1500 } | |
| 1501 | |
| 1502 /* This function creates a bigfloat with the precision of its argument */ | |
| 1503 Lisp_Object | |
| 1504 make_bigfloat_bf (bigfloat float_value) | |
| 1505 { | |
| 1506 Lisp_Bigfloat *f; | |
| 1507 | |
| 2720 | 1508 #ifdef MC_ALLOC |
| 1509 f = alloc_lrecord_type (Lisp_Bigfloat, &lrecord_bigfloat); | |
| 1510 #else /* not MC_ALLOC */ | |
| 1983 | 1511 ALLOCATE_FIXED_TYPE (bigfloat, Lisp_Bigfloat, f); |
| 1512 set_lheader_implementation (&f->lheader, &lrecord_bigfloat); | |
| 2720 | 1513 #endif /* not MC_ALLOC */ |
| 1983 | 1514 bigfloat_init_prec (bigfloat_data (f), bigfloat_get_prec (float_value)); |
| 1515 bigfloat_set (bigfloat_data (f), float_value); | |
| 1516 return wrap_bigfloat (f); | |
| 1517 } | |
| 1518 #endif /* HAVE_BIGFLOAT */ | |
| 1519 | |
| 1520 /************************************************************************/ | |
| 428 | 1521 /* Vector allocation */ |
| 1522 /************************************************************************/ | |
| 1523 | |
| 1524 static Lisp_Object | |
| 1525 mark_vector (Lisp_Object obj) | |
| 1526 { | |
| 1527 Lisp_Vector *ptr = XVECTOR (obj); | |
| 1528 int len = vector_length (ptr); | |
| 1529 int i; | |
| 1530 | |
| 1531 for (i = 0; i < len - 1; i++) | |
| 1532 mark_object (ptr->contents[i]); | |
| 1533 return (len > 0) ? ptr->contents[len - 1] : Qnil; | |
| 1534 } | |
| 1535 | |
| 665 | 1536 static Bytecount |
| 442 | 1537 size_vector (const void *lheader) |
| 428 | 1538 { |
| 456 | 1539 return FLEXIBLE_ARRAY_STRUCT_SIZEOF (Lisp_Vector, Lisp_Object, contents, |
| 442 | 1540 ((Lisp_Vector *) lheader)->size); |
| 428 | 1541 } |
| 1542 | |
| 1543 static int | |
| 1544 vector_equal (Lisp_Object obj1, Lisp_Object obj2, int depth) | |
| 1545 { | |
| 1546 int len = XVECTOR_LENGTH (obj1); | |
| 1547 if (len != XVECTOR_LENGTH (obj2)) | |
| 1548 return 0; | |
| 1549 | |
| 1550 { | |
| 1551 Lisp_Object *ptr1 = XVECTOR_DATA (obj1); | |
| 1552 Lisp_Object *ptr2 = XVECTOR_DATA (obj2); | |
| 1553 while (len--) | |
| 1554 if (!internal_equal (*ptr1++, *ptr2++, depth + 1)) | |
| 1555 return 0; | |
| 1556 } | |
| 1557 return 1; | |
| 1558 } | |
| 1559 | |
| 665 | 1560 static Hashcode |
| 442 | 1561 vector_hash (Lisp_Object obj, int depth) |
| 1562 { | |
| 1563 return HASH2 (XVECTOR_LENGTH (obj), | |
| 1564 internal_array_hash (XVECTOR_DATA (obj), | |
| 1565 XVECTOR_LENGTH (obj), | |
| 1566 depth + 1)); | |
| 1567 } | |
| 1568 | |
| 1204 | 1569 static const struct memory_description vector_description[] = { |
| 440 | 1570 { XD_LONG, offsetof (Lisp_Vector, size) }, |
| 1571 { XD_LISP_OBJECT_ARRAY, offsetof (Lisp_Vector, contents), XD_INDIRECT(0, 0) }, | |
| 428 | 1572 { XD_END } |
| 1573 }; | |
| 1574 | |
| 1204 | 1575 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("vector", vector, |
| 1576 1, /*dumpable-flag*/ | |
| 1577 mark_vector, print_vector, 0, | |
| 1578 vector_equal, | |
| 1579 vector_hash, | |
| 1580 vector_description, | |
| 1581 size_vector, Lisp_Vector); | |
| 428 | 1582 /* #### should allocate `small' vectors from a frob-block */ |
| 1583 static Lisp_Vector * | |
| 665 | 1584 make_vector_internal (Elemcount sizei) |
| 428 | 1585 { |
| 1204 | 1586 /* no `next' field; we use lcrecords */ |
| 665 | 1587 Bytecount sizem = FLEXIBLE_ARRAY_STRUCT_SIZEOF (Lisp_Vector, Lisp_Object, |
| 1204 | 1588 contents, sizei); |
| 1589 Lisp_Vector *p = | |
| 2720 | 1590 #ifdef MC_ALLOC |
| 1591 (Lisp_Vector *) alloc_lrecord (sizem, &lrecord_vector); | |
| 1592 #else /* not MC_ALLOC */ | |
| 1204 | 1593 (Lisp_Vector *) basic_alloc_lcrecord (sizem, &lrecord_vector); |
| 2720 | 1594 #endif /* not MC_ALLOC */ |
| 428 | 1595 |
| 1596 p->size = sizei; | |
| 1597 return p; | |
| 1598 } | |
| 1599 | |
| 1600 Lisp_Object | |
| 665 | 1601 make_vector (Elemcount length, Lisp_Object object) |
| 428 | 1602 { |
| 1603 Lisp_Vector *vecp = make_vector_internal (length); | |
| 1604 Lisp_Object *p = vector_data (vecp); | |
| 1605 | |
| 1606 while (length--) | |
| 444 | 1607 *p++ = object; |
| 428 | 1608 |
| 793 | 1609 return wrap_vector (vecp); |
| 428 | 1610 } |
| 1611 | |
| 1612 DEFUN ("make-vector", Fmake_vector, 2, 2, 0, /* | |
| 444 | 1613 Return a new vector of length LENGTH, with each element being OBJECT. |
| 428 | 1614 See also the function `vector'. |
| 1615 */ | |
| 444 | 1616 (length, object)) |
| 428 | 1617 { |
| 1618 CONCHECK_NATNUM (length); | |
| 444 | 1619 return make_vector (XINT (length), object); |
| 428 | 1620 } |
| 1621 | |
| 1622 DEFUN ("vector", Fvector, 0, MANY, 0, /* | |
| 1623 Return a newly created vector with specified arguments as elements. | |
| 1624 Any number of arguments, even zero arguments, are allowed. | |
| 1625 */ | |
| 1626 (int nargs, Lisp_Object *args)) | |
| 1627 { | |
| 1628 Lisp_Vector *vecp = make_vector_internal (nargs); | |
| 1629 Lisp_Object *p = vector_data (vecp); | |
| 1630 | |
| 1631 while (nargs--) | |
| 1632 *p++ = *args++; | |
| 1633 | |
| 793 | 1634 return wrap_vector (vecp); |
| 428 | 1635 } |
| 1636 | |
| 1637 Lisp_Object | |
| 1638 vector1 (Lisp_Object obj0) | |
| 1639 { | |
| 1640 return Fvector (1, &obj0); | |
| 1641 } | |
| 1642 | |
| 1643 Lisp_Object | |
| 1644 vector2 (Lisp_Object obj0, Lisp_Object obj1) | |
| 1645 { | |
| 1646 Lisp_Object args[2]; | |
| 1647 args[0] = obj0; | |
| 1648 args[1] = obj1; | |
| 1649 return Fvector (2, args); | |
| 1650 } | |
| 1651 | |
| 1652 Lisp_Object | |
| 1653 vector3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2) | |
| 1654 { | |
| 1655 Lisp_Object args[3]; | |
| 1656 args[0] = obj0; | |
| 1657 args[1] = obj1; | |
| 1658 args[2] = obj2; | |
| 1659 return Fvector (3, args); | |
| 1660 } | |
| 1661 | |
| 1662 #if 0 /* currently unused */ | |
| 1663 | |
| 1664 Lisp_Object | |
| 1665 vector4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1666 Lisp_Object obj3) | |
| 1667 { | |
| 1668 Lisp_Object args[4]; | |
| 1669 args[0] = obj0; | |
| 1670 args[1] = obj1; | |
| 1671 args[2] = obj2; | |
| 1672 args[3] = obj3; | |
| 1673 return Fvector (4, args); | |
| 1674 } | |
| 1675 | |
| 1676 Lisp_Object | |
| 1677 vector5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1678 Lisp_Object obj3, Lisp_Object obj4) | |
| 1679 { | |
| 1680 Lisp_Object args[5]; | |
| 1681 args[0] = obj0; | |
| 1682 args[1] = obj1; | |
| 1683 args[2] = obj2; | |
| 1684 args[3] = obj3; | |
| 1685 args[4] = obj4; | |
| 1686 return Fvector (5, args); | |
| 1687 } | |
| 1688 | |
| 1689 Lisp_Object | |
| 1690 vector6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1691 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5) | |
| 1692 { | |
| 1693 Lisp_Object args[6]; | |
| 1694 args[0] = obj0; | |
| 1695 args[1] = obj1; | |
| 1696 args[2] = obj2; | |
| 1697 args[3] = obj3; | |
| 1698 args[4] = obj4; | |
| 1699 args[5] = obj5; | |
| 1700 return Fvector (6, args); | |
| 1701 } | |
| 1702 | |
| 1703 Lisp_Object | |
| 1704 vector7 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1705 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5, | |
| 1706 Lisp_Object obj6) | |
| 1707 { | |
| 1708 Lisp_Object args[7]; | |
| 1709 args[0] = obj0; | |
| 1710 args[1] = obj1; | |
| 1711 args[2] = obj2; | |
| 1712 args[3] = obj3; | |
| 1713 args[4] = obj4; | |
| 1714 args[5] = obj5; | |
| 1715 args[6] = obj6; | |
| 1716 return Fvector (7, args); | |
| 1717 } | |
| 1718 | |
| 1719 Lisp_Object | |
| 1720 vector8 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1721 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5, | |
| 1722 Lisp_Object obj6, Lisp_Object obj7) | |
| 1723 { | |
| 1724 Lisp_Object args[8]; | |
| 1725 args[0] = obj0; | |
| 1726 args[1] = obj1; | |
| 1727 args[2] = obj2; | |
| 1728 args[3] = obj3; | |
| 1729 args[4] = obj4; | |
| 1730 args[5] = obj5; | |
| 1731 args[6] = obj6; | |
| 1732 args[7] = obj7; | |
| 1733 return Fvector (8, args); | |
| 1734 } | |
| 1735 #endif /* unused */ | |
| 1736 | |
| 1737 /************************************************************************/ | |
| 1738 /* Bit Vector allocation */ | |
| 1739 /************************************************************************/ | |
| 1740 | |
| 1741 /* #### should allocate `small' bit vectors from a frob-block */ | |
| 440 | 1742 static Lisp_Bit_Vector * |
| 665 | 1743 make_bit_vector_internal (Elemcount sizei) |
| 428 | 1744 { |
| 1204 | 1745 /* no `next' field; we use lcrecords */ |
| 665 | 1746 Elemcount num_longs = BIT_VECTOR_LONG_STORAGE (sizei); |
| 1747 Bytecount sizem = FLEXIBLE_ARRAY_STRUCT_SIZEOF (Lisp_Bit_Vector, | |
| 1204 | 1748 unsigned long, |
| 1749 bits, num_longs); | |
| 1750 Lisp_Bit_Vector *p = (Lisp_Bit_Vector *) | |
| 2720 | 1751 #ifdef MC_ALLOC |
| 1752 alloc_lrecord (sizem, &lrecord_bit_vector); | |
| 1753 #else /* not MC_ALLOC */ | |
| 1204 | 1754 basic_alloc_lcrecord (sizem, &lrecord_bit_vector); |
| 2720 | 1755 #endif /* not MC_ALLOC */ |
| 428 | 1756 |
| 1757 bit_vector_length (p) = sizei; | |
| 1758 return p; | |
| 1759 } | |
| 1760 | |
| 1761 Lisp_Object | |
| 665 | 1762 make_bit_vector (Elemcount length, Lisp_Object bit) |
| 428 | 1763 { |
| 440 | 1764 Lisp_Bit_Vector *p = make_bit_vector_internal (length); |
| 665 | 1765 Elemcount num_longs = BIT_VECTOR_LONG_STORAGE (length); |
| 428 | 1766 |
| 444 | 1767 CHECK_BIT (bit); |
| 1768 | |
| 1769 if (ZEROP (bit)) | |
| 428 | 1770 memset (p->bits, 0, num_longs * sizeof (long)); |
| 1771 else | |
| 1772 { | |
| 665 | 1773 Elemcount bits_in_last = length & (LONGBITS_POWER_OF_2 - 1); |
| 428 | 1774 memset (p->bits, ~0, num_longs * sizeof (long)); |
| 1775 /* But we have to make sure that the unused bits in the | |
| 1776 last long are 0, so that equal/hash is easy. */ | |
| 1777 if (bits_in_last) | |
| 1778 p->bits[num_longs - 1] &= (1 << bits_in_last) - 1; | |
| 1779 } | |
| 1780 | |
| 793 | 1781 return wrap_bit_vector (p); |
| 428 | 1782 } |
| 1783 | |
| 1784 Lisp_Object | |
| 665 | 1785 make_bit_vector_from_byte_vector (unsigned char *bytevec, Elemcount length) |
| 428 | 1786 { |
| 665 | 1787 Elemcount i; |
| 428 | 1788 Lisp_Bit_Vector *p = make_bit_vector_internal (length); |
| 1789 | |
| 1790 for (i = 0; i < length; i++) | |
| 1791 set_bit_vector_bit (p, i, bytevec[i]); | |
| 1792 | |
| 793 | 1793 return wrap_bit_vector (p); |
| 428 | 1794 } |
| 1795 | |
| 1796 DEFUN ("make-bit-vector", Fmake_bit_vector, 2, 2, 0, /* | |
| 444 | 1797 Return a new bit vector of length LENGTH. with each bit set to BIT. |
| 1798 BIT must be one of the integers 0 or 1. See also the function `bit-vector'. | |
| 428 | 1799 */ |
| 444 | 1800 (length, bit)) |
| 428 | 1801 { |
| 1802 CONCHECK_NATNUM (length); | |
| 1803 | |
| 444 | 1804 return make_bit_vector (XINT (length), bit); |
| 428 | 1805 } |
| 1806 | |
| 1807 DEFUN ("bit-vector", Fbit_vector, 0, MANY, 0, /* | |
| 1808 Return a newly created bit vector with specified arguments as elements. | |
| 1809 Any number of arguments, even zero arguments, are allowed. | |
| 444 | 1810 Each argument must be one of the integers 0 or 1. |
| 428 | 1811 */ |
| 1812 (int nargs, Lisp_Object *args)) | |
| 1813 { | |
| 1814 int i; | |
| 1815 Lisp_Bit_Vector *p = make_bit_vector_internal (nargs); | |
| 1816 | |
| 1817 for (i = 0; i < nargs; i++) | |
| 1818 { | |
| 1819 CHECK_BIT (args[i]); | |
| 1820 set_bit_vector_bit (p, i, !ZEROP (args[i])); | |
| 1821 } | |
| 1822 | |
| 793 | 1823 return wrap_bit_vector (p); |
| 428 | 1824 } |
| 1825 | |
| 1826 | |
| 1827 /************************************************************************/ | |
| 1828 /* Compiled-function allocation */ | |
| 1829 /************************************************************************/ | |
| 1830 | |
| 2720 | 1831 #ifndef MC_ALLOC |
| 428 | 1832 DECLARE_FIXED_TYPE_ALLOC (compiled_function, Lisp_Compiled_Function); |
| 1833 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_compiled_function 1000 | |
| 2720 | 1834 #endif /* not MC_ALLOC */ |
| 428 | 1835 |
| 1836 static Lisp_Object | |
| 1837 make_compiled_function (void) | |
| 1838 { | |
| 1839 Lisp_Compiled_Function *f; | |
| 1840 | |
| 2720 | 1841 #ifdef MC_ALLOC |
| 1842 f = alloc_lrecord_type (Lisp_Compiled_Function, &lrecord_compiled_function); | |
| 1843 #else /* not MC_ALLOC */ | |
| 428 | 1844 ALLOCATE_FIXED_TYPE (compiled_function, Lisp_Compiled_Function, f); |
| 442 | 1845 set_lheader_implementation (&f->lheader, &lrecord_compiled_function); |
| 2720 | 1846 #endif /* not MC_ALLOC */ |
| 428 | 1847 |
| 1848 f->stack_depth = 0; | |
| 1849 f->specpdl_depth = 0; | |
| 1850 f->flags.documentationp = 0; | |
| 1851 f->flags.interactivep = 0; | |
| 1852 f->flags.domainp = 0; /* I18N3 */ | |
| 1853 f->instructions = Qzero; | |
| 1854 f->constants = Qzero; | |
| 1855 f->arglist = Qnil; | |
| 1739 | 1856 f->args = NULL; |
| 1857 f->max_args = f->min_args = f->args_in_array = 0; | |
| 428 | 1858 f->doc_and_interactive = Qnil; |
| 1859 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK | |
| 1860 f->annotated = Qnil; | |
| 1861 #endif | |
| 793 | 1862 return wrap_compiled_function (f); |
| 428 | 1863 } |
| 1864 | |
| 1865 DEFUN ("make-byte-code", Fmake_byte_code, 4, MANY, 0, /* | |
| 1866 Return a new compiled-function object. | |
| 1867 Usage: (arglist instructions constants stack-depth | |
| 1868 &optional doc-string interactive) | |
| 1869 Note that, unlike all other emacs-lisp functions, calling this with five | |
| 1870 arguments is NOT the same as calling it with six arguments, the last of | |
| 1871 which is nil. If the INTERACTIVE arg is specified as nil, then that means | |
| 1872 that this function was defined with `(interactive)'. If the arg is not | |
| 1873 specified, then that means the function is not interactive. | |
| 1874 This is terrible behavior which is retained for compatibility with old | |
| 1875 `.elc' files which expect these semantics. | |
| 1876 */ | |
| 1877 (int nargs, Lisp_Object *args)) | |
| 1878 { | |
| 1879 /* In a non-insane world this function would have this arglist... | |
| 1880 (arglist instructions constants stack_depth &optional doc_string interactive) | |
| 1881 */ | |
| 1882 Lisp_Object fun = make_compiled_function (); | |
| 1883 Lisp_Compiled_Function *f = XCOMPILED_FUNCTION (fun); | |
| 1884 | |
| 1885 Lisp_Object arglist = args[0]; | |
| 1886 Lisp_Object instructions = args[1]; | |
| 1887 Lisp_Object constants = args[2]; | |
| 1888 Lisp_Object stack_depth = args[3]; | |
| 1889 Lisp_Object doc_string = (nargs > 4) ? args[4] : Qnil; | |
| 1890 Lisp_Object interactive = (nargs > 5) ? args[5] : Qunbound; | |
| 1891 | |
| 1892 if (nargs < 4 || nargs > 6) | |
| 1893 return Fsignal (Qwrong_number_of_arguments, | |
| 1894 list2 (intern ("make-byte-code"), make_int (nargs))); | |
| 1895 | |
| 1896 /* Check for valid formal parameter list now, to allow us to use | |
| 1897 SPECBIND_FAST_UNSAFE() later in funcall_compiled_function(). */ | |
| 1898 { | |
| 814 | 1899 EXTERNAL_LIST_LOOP_2 (symbol, arglist) |
| 428 | 1900 { |
| 1901 CHECK_SYMBOL (symbol); | |
| 1902 if (EQ (symbol, Qt) || | |
| 1903 EQ (symbol, Qnil) || | |
| 1904 SYMBOL_IS_KEYWORD (symbol)) | |
| 563 | 1905 invalid_constant_2 |
| 428 | 1906 ("Invalid constant symbol in formal parameter list", |
| 1907 symbol, arglist); | |
| 1908 } | |
| 1909 } | |
| 1910 f->arglist = arglist; | |
| 1911 | |
| 1912 /* `instructions' is a string or a cons (string . int) for a | |
| 1913 lazy-loaded function. */ | |
| 1914 if (CONSP (instructions)) | |
| 1915 { | |
| 1916 CHECK_STRING (XCAR (instructions)); | |
| 1917 CHECK_INT (XCDR (instructions)); | |
| 1918 } | |
| 1919 else | |
| 1920 { | |
| 1921 CHECK_STRING (instructions); | |
| 1922 } | |
| 1923 f->instructions = instructions; | |
| 1924 | |
| 1925 if (!NILP (constants)) | |
| 1926 CHECK_VECTOR (constants); | |
| 1927 f->constants = constants; | |
| 1928 | |
| 1929 CHECK_NATNUM (stack_depth); | |
| 442 | 1930 f->stack_depth = (unsigned short) XINT (stack_depth); |
| 428 | 1931 |
| 1932 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK | |
| 1933 if (!NILP (Vcurrent_compiled_function_annotation)) | |
| 1934 f->annotated = Fcopy (Vcurrent_compiled_function_annotation); | |
| 1935 else if (!NILP (Vload_file_name_internal_the_purecopy)) | |
| 1936 f->annotated = Vload_file_name_internal_the_purecopy; | |
| 1937 else if (!NILP (Vload_file_name_internal)) | |
| 1938 { | |
| 1939 struct gcpro gcpro1; | |
| 1940 GCPRO1 (fun); /* don't let fun get reaped */ | |
| 1941 Vload_file_name_internal_the_purecopy = | |
| 1942 Ffile_name_nondirectory (Vload_file_name_internal); | |
| 1943 f->annotated = Vload_file_name_internal_the_purecopy; | |
| 1944 UNGCPRO; | |
| 1945 } | |
| 1946 #endif /* COMPILED_FUNCTION_ANNOTATION_HACK */ | |
| 1947 | |
| 1948 /* doc_string may be nil, string, int, or a cons (string . int). | |
| 1949 interactive may be list or string (or unbound). */ | |
| 1950 f->doc_and_interactive = Qunbound; | |
| 1951 #ifdef I18N3 | |
| 1952 if ((f->flags.domainp = !NILP (Vfile_domain)) != 0) | |
| 1953 f->doc_and_interactive = Vfile_domain; | |
| 1954 #endif | |
| 1955 if ((f->flags.interactivep = !UNBOUNDP (interactive)) != 0) | |
| 1956 { | |
| 1957 f->doc_and_interactive | |
| 1958 = (UNBOUNDP (f->doc_and_interactive) ? interactive : | |
| 1959 Fcons (interactive, f->doc_and_interactive)); | |
| 1960 } | |
| 1961 if ((f->flags.documentationp = !NILP (doc_string)) != 0) | |
| 1962 { | |
| 1963 f->doc_and_interactive | |
| 1964 = (UNBOUNDP (f->doc_and_interactive) ? doc_string : | |
| 1965 Fcons (doc_string, f->doc_and_interactive)); | |
| 1966 } | |
| 1967 if (UNBOUNDP (f->doc_and_interactive)) | |
| 1968 f->doc_and_interactive = Qnil; | |
| 1969 | |
| 1970 return fun; | |
| 1971 } | |
| 1972 | |
| 1973 | |
| 1974 /************************************************************************/ | |
| 1975 /* Symbol allocation */ | |
| 1976 /************************************************************************/ | |
| 1977 | |
| 2720 | 1978 #ifndef MC_ALLOC |
| 440 | 1979 DECLARE_FIXED_TYPE_ALLOC (symbol, Lisp_Symbol); |
| 428 | 1980 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_symbol 1000 |
| 2720 | 1981 #endif /* not MC_ALLOC */ |
| 428 | 1982 |
| 1983 DEFUN ("make-symbol", Fmake_symbol, 1, 1, 0, /* | |
| 1984 Return a newly allocated uninterned symbol whose name is NAME. | |
| 1985 Its value and function definition are void, and its property list is nil. | |
| 1986 */ | |
| 1987 (name)) | |
| 1988 { | |
| 440 | 1989 Lisp_Symbol *p; |
| 428 | 1990 |
| 1991 CHECK_STRING (name); | |
| 1992 | |
| 2720 | 1993 #ifdef MC_ALLOC |
| 1994 p = alloc_lrecord_type (Lisp_Symbol, &lrecord_symbol); | |
| 1995 #else /* not MC_ALLOC */ | |
| 440 | 1996 ALLOCATE_FIXED_TYPE (symbol, Lisp_Symbol, p); |
| 442 | 1997 set_lheader_implementation (&p->lheader, &lrecord_symbol); |
| 2720 | 1998 #endif /* not MC_ALLOC */ |
| 793 | 1999 p->name = name; |
| 428 | 2000 p->plist = Qnil; |
| 2001 p->value = Qunbound; | |
| 2002 p->function = Qunbound; | |
| 2003 symbol_next (p) = 0; | |
| 793 | 2004 return wrap_symbol (p); |
| 428 | 2005 } |
| 2006 | |
| 2007 | |
| 2008 /************************************************************************/ | |
| 2009 /* Extent allocation */ | |
| 2010 /************************************************************************/ | |
| 2011 | |
| 2720 | 2012 #ifndef MC_ALLOC |
| 428 | 2013 DECLARE_FIXED_TYPE_ALLOC (extent, struct extent); |
| 2014 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_extent 1000 | |
| 2720 | 2015 #endif /* not MC_ALLOC */ |
| 428 | 2016 |
| 2017 struct extent * | |
| 2018 allocate_extent (void) | |
| 2019 { | |
| 2020 struct extent *e; | |
| 2021 | |
| 2720 | 2022 #ifdef MC_ALLOC |
| 2023 e = alloc_lrecord_type (struct extent, &lrecord_extent); | |
| 2024 #else /* not MC_ALLOC */ | |
| 428 | 2025 ALLOCATE_FIXED_TYPE (extent, struct extent, e); |
| 442 | 2026 set_lheader_implementation (&e->lheader, &lrecord_extent); |
| 2720 | 2027 #endif /* not MC_ALLOC */ |
| 428 | 2028 extent_object (e) = Qnil; |
| 2029 set_extent_start (e, -1); | |
| 2030 set_extent_end (e, -1); | |
| 2031 e->plist = Qnil; | |
| 2032 | |
| 2033 xzero (e->flags); | |
| 2034 | |
| 2035 extent_face (e) = Qnil; | |
| 2036 e->flags.end_open = 1; /* default is for endpoints to behave like markers */ | |
| 2037 e->flags.detachable = 1; | |
| 2038 | |
| 2039 return e; | |
| 2040 } | |
| 2041 | |
| 2042 | |
| 2043 /************************************************************************/ | |
| 2044 /* Event allocation */ | |
| 2045 /************************************************************************/ | |
| 2046 | |
| 2720 | 2047 #ifndef MC_ALLOC |
| 440 | 2048 DECLARE_FIXED_TYPE_ALLOC (event, Lisp_Event); |
| 428 | 2049 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_event 1000 |
| 2720 | 2050 #endif /* not MC_ALLOC */ |
| 428 | 2051 |
| 2052 Lisp_Object | |
| 2053 allocate_event (void) | |
| 2054 { | |
| 440 | 2055 Lisp_Event *e; |
| 2056 | |
| 2720 | 2057 #ifdef MC_ALLOC |
| 2058 e = alloc_lrecord_type (Lisp_Event, &lrecord_event); | |
| 2059 #else /* not MC_ALLOC */ | |
| 440 | 2060 ALLOCATE_FIXED_TYPE (event, Lisp_Event, e); |
| 442 | 2061 set_lheader_implementation (&e->lheader, &lrecord_event); |
| 2720 | 2062 #endif /* not MC_ALLOC */ |
| 428 | 2063 |
| 793 | 2064 return wrap_event (e); |
| 428 | 2065 } |
| 2066 | |
| 1204 | 2067 #ifdef EVENT_DATA_AS_OBJECTS |
| 2720 | 2068 #ifndef MC_ALLOC |
| 934 | 2069 DECLARE_FIXED_TYPE_ALLOC (key_data, Lisp_Key_Data); |
| 2070 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_key_data 1000 | |
| 2720 | 2071 #endif /* not MC_ALLOC */ |
| 934 | 2072 |
| 2073 Lisp_Object | |
| 1204 | 2074 make_key_data (void) |
| 934 | 2075 { |
| 2076 Lisp_Key_Data *d; | |
| 2077 | |
| 2720 | 2078 #ifdef MC_ALLOC |
| 2079 d = alloc_lrecord_type (Lisp_Key_Data, &lrecord_key_data); | |
| 2080 #else /* not MC_ALLOC */ | |
| 934 | 2081 ALLOCATE_FIXED_TYPE (key_data, Lisp_Key_Data, d); |
| 1204 | 2082 xzero (*d); |
| 934 | 2083 set_lheader_implementation (&d->lheader, &lrecord_key_data); |
| 2720 | 2084 #endif /* not MC_ALLOC */ |
| 1204 | 2085 d->keysym = Qnil; |
| 2086 | |
| 2087 return wrap_key_data (d); | |
| 934 | 2088 } |
| 2089 | |
| 2720 | 2090 #ifndef MC_ALLOC |
| 934 | 2091 DECLARE_FIXED_TYPE_ALLOC (button_data, Lisp_Button_Data); |
| 2092 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_button_data 1000 | |
| 2720 | 2093 #endif /* not MC_ALLOC */ |
| 934 | 2094 |
| 2095 Lisp_Object | |
| 1204 | 2096 make_button_data (void) |
| 934 | 2097 { |
| 2098 Lisp_Button_Data *d; | |
| 2099 | |
| 2720 | 2100 #ifdef MC_ALLOC |
| 2101 d = alloc_lrecord_type (Lisp_Button_Data, &lrecord_button_data); | |
| 2102 #else /* not MC_ALLOC */ | |
| 934 | 2103 ALLOCATE_FIXED_TYPE (button_data, Lisp_Button_Data, d); |
| 1204 | 2104 xzero (*d); |
| 934 | 2105 set_lheader_implementation (&d->lheader, &lrecord_button_data); |
| 2106 | |
| 2720 | 2107 #endif /* not MC_ALLOC */ |
| 1204 | 2108 return wrap_button_data (d); |
| 934 | 2109 } |
| 2110 | |
| 2720 | 2111 #ifndef MC_ALLOC |
| 934 | 2112 DECLARE_FIXED_TYPE_ALLOC (motion_data, Lisp_Motion_Data); |
| 2113 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_motion_data 1000 | |
| 2720 | 2114 #endif /* not MC_ALLOC */ |
| 934 | 2115 |
| 2116 Lisp_Object | |
| 1204 | 2117 make_motion_data (void) |
| 934 | 2118 { |
| 2119 Lisp_Motion_Data *d; | |
| 2120 | |
| 2720 | 2121 #ifdef MC_ALLOC |
| 2122 d = alloc_lrecord_type (Lisp_Motion_Data, &lrecord_motion_data); | |
| 2123 #else /* not MC_ALLOC */ | |
| 934 | 2124 ALLOCATE_FIXED_TYPE (motion_data, Lisp_Motion_Data, d); |
| 1204 | 2125 xzero (*d); |
| 934 | 2126 set_lheader_implementation (&d->lheader, &lrecord_motion_data); |
| 2720 | 2127 #endif /* not MC_ALLOC */ |
| 934 | 2128 |
| 1204 | 2129 return wrap_motion_data (d); |
| 934 | 2130 } |
| 2131 | |
| 2720 | 2132 #ifndef MC_ALLOC |
| 934 | 2133 DECLARE_FIXED_TYPE_ALLOC (process_data, Lisp_Process_Data); |
| 2134 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_process_data 1000 | |
| 2720 | 2135 #endif /* not MC_ALLOC */ |
| 934 | 2136 |
| 2137 Lisp_Object | |
| 1204 | 2138 make_process_data (void) |
| 934 | 2139 { |
| 2140 Lisp_Process_Data *d; | |
| 2141 | |
| 2720 | 2142 #ifdef MC_ALLOC |
| 2143 d = alloc_lrecord_type (Lisp_Process_Data, &lrecord_process_data); | |
| 2144 #else /* not MC_ALLOC */ | |
| 934 | 2145 ALLOCATE_FIXED_TYPE (process_data, Lisp_Process_Data, d); |
| 1204 | 2146 xzero (*d); |
| 934 | 2147 set_lheader_implementation (&d->lheader, &lrecord_process_data); |
| 1204 | 2148 d->process = Qnil; |
| 2720 | 2149 #endif /* not MC_ALLOC */ |
| 1204 | 2150 |
| 2151 return wrap_process_data (d); | |
| 934 | 2152 } |
| 2153 | |
| 2720 | 2154 #ifndef MC_ALLOC |
| 934 | 2155 DECLARE_FIXED_TYPE_ALLOC (timeout_data, Lisp_Timeout_Data); |
| 2156 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_timeout_data 1000 | |
| 2720 | 2157 #endif /* not MC_ALLOC */ |
| 934 | 2158 |
| 2159 Lisp_Object | |
| 1204 | 2160 make_timeout_data (void) |
| 934 | 2161 { |
| 2162 Lisp_Timeout_Data *d; | |
| 2163 | |
| 2720 | 2164 #ifdef MC_ALLOC |
| 2165 d = alloc_lrecord_type (Lisp_Timeout_Data, &lrecord_timeout_data); | |
| 2166 #else /* not MC_ALLOC */ | |
| 934 | 2167 ALLOCATE_FIXED_TYPE (timeout_data, Lisp_Timeout_Data, d); |
| 1204 | 2168 xzero (*d); |
| 934 | 2169 set_lheader_implementation (&d->lheader, &lrecord_timeout_data); |
| 1204 | 2170 d->function = Qnil; |
| 2171 d->object = Qnil; | |
| 2720 | 2172 #endif /* not MC_ALLOC */ |
| 1204 | 2173 |
| 2174 return wrap_timeout_data (d); | |
| 934 | 2175 } |
| 2176 | |
| 2720 | 2177 #ifndef MC_ALLOC |
| 934 | 2178 DECLARE_FIXED_TYPE_ALLOC (magic_data, Lisp_Magic_Data); |
| 2179 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_magic_data 1000 | |
| 2720 | 2180 #endif /* not MC_ALLOC */ |
| 934 | 2181 |
| 2182 Lisp_Object | |
| 1204 | 2183 make_magic_data (void) |
| 934 | 2184 { |
| 2185 Lisp_Magic_Data *d; | |
| 2186 | |
| 2720 | 2187 #ifdef MC_ALLOC |
| 2188 d = alloc_lrecord_type (Lisp_Magic_Data, &lrecord_magic_data); | |
| 2189 #else /* not MC_ALLOC */ | |
| 934 | 2190 ALLOCATE_FIXED_TYPE (magic_data, Lisp_Magic_Data, d); |
| 1204 | 2191 xzero (*d); |
| 934 | 2192 set_lheader_implementation (&d->lheader, &lrecord_magic_data); |
| 2720 | 2193 #endif /* not MC_ALLOC */ |
| 934 | 2194 |
| 1204 | 2195 return wrap_magic_data (d); |
| 934 | 2196 } |
| 2197 | |
| 2720 | 2198 #ifndef MC_ALLOC |
| 934 | 2199 DECLARE_FIXED_TYPE_ALLOC (magic_eval_data, Lisp_Magic_Eval_Data); |
| 2200 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_magic_eval_data 1000 | |
| 2720 | 2201 #endif /* not MC_ALLOC */ |
| 934 | 2202 |
| 2203 Lisp_Object | |
| 1204 | 2204 make_magic_eval_data (void) |
| 934 | 2205 { |
| 2206 Lisp_Magic_Eval_Data *d; | |
| 2207 | |
| 2720 | 2208 #ifdef MC_ALLOC |
| 2209 d = alloc_lrecord_type (Lisp_Magic_Eval_Data, &lrecord_magic_eval_data); | |
| 2210 #else /* not MC_ALLOC */ | |
| 934 | 2211 ALLOCATE_FIXED_TYPE (magic_eval_data, Lisp_Magic_Eval_Data, d); |
| 1204 | 2212 xzero (*d); |
| 934 | 2213 set_lheader_implementation (&d->lheader, &lrecord_magic_eval_data); |
| 1204 | 2214 d->object = Qnil; |
| 2720 | 2215 #endif /* not MC_ALLOC */ |
| 1204 | 2216 |
| 2217 return wrap_magic_eval_data (d); | |
| 934 | 2218 } |
| 2219 | |
| 2720 | 2220 #ifndef MC_ALLOC |
| 934 | 2221 DECLARE_FIXED_TYPE_ALLOC (eval_data, Lisp_Eval_Data); |
| 2222 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_eval_data 1000 | |
| 2720 | 2223 #endif /* not MC_ALLOC */ |
| 934 | 2224 |
| 2225 Lisp_Object | |
| 1204 | 2226 make_eval_data (void) |
| 934 | 2227 { |
| 2228 Lisp_Eval_Data *d; | |
| 2229 | |
| 2720 | 2230 #ifdef MC_ALLOC |
| 2231 d = alloc_lrecord_type (Lisp_Eval_Data, &lrecord_eval_data); | |
| 2232 #else /* not MC_ALLOC */ | |
| 934 | 2233 ALLOCATE_FIXED_TYPE (eval_data, Lisp_Eval_Data, d); |
| 1204 | 2234 xzero (*d); |
| 934 | 2235 set_lheader_implementation (&d->lheader, &lrecord_eval_data); |
| 1204 | 2236 d->function = Qnil; |
| 2237 d->object = Qnil; | |
| 2720 | 2238 #endif /* not MC_ALLOC */ |
| 1204 | 2239 |
| 2240 return wrap_eval_data (d); | |
| 934 | 2241 } |
| 2242 | |
| 2720 | 2243 #ifndef MC_ALLOC |
| 934 | 2244 DECLARE_FIXED_TYPE_ALLOC (misc_user_data, Lisp_Misc_User_Data); |
| 2245 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_misc_user_data 1000 | |
| 2720 | 2246 #endif /* not MC_ALLOC */ |
| 934 | 2247 |
| 2248 Lisp_Object | |
| 1204 | 2249 make_misc_user_data (void) |
| 934 | 2250 { |
| 2251 Lisp_Misc_User_Data *d; | |
| 2252 | |
| 2720 | 2253 #ifdef MC_ALLOC |
| 2254 d = alloc_lrecord_type (Lisp_Misc_User_Data, &lrecord_misc_user_data); | |
| 2255 #else /* not MC_ALLOC */ | |
| 934 | 2256 ALLOCATE_FIXED_TYPE (misc_user_data, Lisp_Misc_User_Data, d); |
| 1204 | 2257 xzero (*d); |
| 934 | 2258 set_lheader_implementation (&d->lheader, &lrecord_misc_user_data); |
| 1204 | 2259 d->function = Qnil; |
| 2260 d->object = Qnil; | |
| 2720 | 2261 #endif /* not MC_ALLOC */ |
| 1204 | 2262 |
| 2263 return wrap_misc_user_data (d); | |
| 934 | 2264 } |
| 1204 | 2265 |
| 2266 #endif /* EVENT_DATA_AS_OBJECTS */ | |
| 428 | 2267 |
| 2268 /************************************************************************/ | |
| 2269 /* Marker allocation */ | |
| 2270 /************************************************************************/ | |
| 2271 | |
| 2720 | 2272 #ifndef MC_ALLOC |
| 440 | 2273 DECLARE_FIXED_TYPE_ALLOC (marker, Lisp_Marker); |
| 428 | 2274 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_marker 1000 |
| 2720 | 2275 #endif /* not MC_ALLOC */ |
| 428 | 2276 |
| 2277 DEFUN ("make-marker", Fmake_marker, 0, 0, 0, /* | |
| 2278 Return a new marker which does not point at any place. | |
| 2279 */ | |
| 2280 ()) | |
| 2281 { | |
| 440 | 2282 Lisp_Marker *p; |
| 2283 | |
| 2720 | 2284 #ifdef MC_ALLOC |
| 2285 p = alloc_lrecord_type (Lisp_Marker, &lrecord_marker); | |
| 2286 #else /* not MC_ALLOC */ | |
| 440 | 2287 ALLOCATE_FIXED_TYPE (marker, Lisp_Marker, p); |
| 442 | 2288 set_lheader_implementation (&p->lheader, &lrecord_marker); |
| 2720 | 2289 #endif /* not MC_ALLOC */ |
| 428 | 2290 p->buffer = 0; |
| 665 | 2291 p->membpos = 0; |
| 428 | 2292 marker_next (p) = 0; |
| 2293 marker_prev (p) = 0; | |
| 2294 p->insertion_type = 0; | |
| 793 | 2295 return wrap_marker (p); |
| 428 | 2296 } |
| 2297 | |
| 2298 Lisp_Object | |
| 2299 noseeum_make_marker (void) | |
| 2300 { | |
| 440 | 2301 Lisp_Marker *p; |
| 2302 | |
| 2720 | 2303 #ifdef MC_ALLOC |
| 2304 p = noseeum_alloc_lrecord_type (Lisp_Marker, &lrecord_marker); | |
| 2305 #else /* not MC_ALLOC */ | |
| 440 | 2306 NOSEEUM_ALLOCATE_FIXED_TYPE (marker, Lisp_Marker, p); |
| 442 | 2307 set_lheader_implementation (&p->lheader, &lrecord_marker); |
| 2720 | 2308 #endif /* not MC_ALLOC */ |
| 428 | 2309 p->buffer = 0; |
| 665 | 2310 p->membpos = 0; |
| 428 | 2311 marker_next (p) = 0; |
| 2312 marker_prev (p) = 0; | |
| 2313 p->insertion_type = 0; | |
| 793 | 2314 return wrap_marker (p); |
| 428 | 2315 } |
| 2316 | |
| 2317 | |
| 2318 /************************************************************************/ | |
| 2319 /* String allocation */ | |
| 2320 /************************************************************************/ | |
| 2321 | |
| 2322 /* The data for "short" strings generally resides inside of structs of type | |
| 2323 string_chars_block. The Lisp_String structure is allocated just like any | |
| 1204 | 2324 other basic lrecord, and these are freelisted when they get garbage |
| 2325 collected. The data for short strings get compacted, but the data for | |
| 2326 large strings do not. | |
| 428 | 2327 |
| 2328 Previously Lisp_String structures were relocated, but this caused a lot | |
| 2329 of bus-errors because the C code didn't include enough GCPRO's for | |
| 2330 strings (since EVERY REFERENCE to a short string needed to be GCPRO'd so | |
| 2331 that the reference would get relocated). | |
| 2332 | |
| 2333 This new method makes things somewhat bigger, but it is MUCH safer. */ | |
| 2334 | |
| 2720 | 2335 #ifndef MC_ALLOC |
| 438 | 2336 DECLARE_FIXED_TYPE_ALLOC (string, Lisp_String); |
| 428 | 2337 /* strings are used and freed quite often */ |
| 2338 /* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 10000 */ | |
| 2339 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 1000 | |
| 2720 | 2340 #endif /* not MC_ALLOC */ |
| 428 | 2341 |
| 2342 static Lisp_Object | |
| 2343 mark_string (Lisp_Object obj) | |
| 2344 { | |
| 793 | 2345 if (CONSP (XSTRING_PLIST (obj)) && EXTENT_INFOP (XCAR (XSTRING_PLIST (obj)))) |
| 2346 flush_cached_extent_info (XCAR (XSTRING_PLIST (obj))); | |
| 2347 return XSTRING_PLIST (obj); | |
| 428 | 2348 } |
| 2349 | |
| 2350 static int | |
| 2286 | 2351 string_equal (Lisp_Object obj1, Lisp_Object obj2, int UNUSED (depth)) |
| 428 | 2352 { |
| 2353 Bytecount len; | |
| 2354 return (((len = XSTRING_LENGTH (obj1)) == XSTRING_LENGTH (obj2)) && | |
| 2355 !memcmp (XSTRING_DATA (obj1), XSTRING_DATA (obj2), len)); | |
| 2356 } | |
| 2357 | |
| 1204 | 2358 static const struct memory_description string_description[] = { |
| 793 | 2359 { XD_BYTECOUNT, offsetof (Lisp_String, size_) }, |
| 2360 { XD_OPAQUE_DATA_PTR, offsetof (Lisp_String, data_), XD_INDIRECT(0, 1) }, | |
| 440 | 2361 { XD_LISP_OBJECT, offsetof (Lisp_String, plist) }, |
| 428 | 2362 { XD_END } |
| 2363 }; | |
| 2364 | |
| 442 | 2365 /* We store the string's extent info as the first element of the string's |
| 2366 property list; and the string's MODIFF as the first or second element | |
| 2367 of the string's property list (depending on whether the extent info | |
| 2368 is present), but only if the string has been modified. This is ugly | |
| 2369 but it reduces the memory allocated for the string in the vast | |
| 2370 majority of cases, where the string is never modified and has no | |
| 2371 extent info. | |
| 2372 | |
| 2373 #### This means you can't use an int as a key in a string's plist. */ | |
| 2374 | |
| 2375 static Lisp_Object * | |
| 2376 string_plist_ptr (Lisp_Object string) | |
| 2377 { | |
| 793 | 2378 Lisp_Object *ptr = &XSTRING_PLIST (string); |
| 442 | 2379 |
| 2380 if (CONSP (*ptr) && EXTENT_INFOP (XCAR (*ptr))) | |
| 2381 ptr = &XCDR (*ptr); | |
| 2382 if (CONSP (*ptr) && INTP (XCAR (*ptr))) | |
| 2383 ptr = &XCDR (*ptr); | |
| 2384 return ptr; | |
| 2385 } | |
| 2386 | |
| 2387 static Lisp_Object | |
| 2388 string_getprop (Lisp_Object string, Lisp_Object property) | |
| 2389 { | |
| 2390 return external_plist_get (string_plist_ptr (string), property, 0, ERROR_ME); | |
| 2391 } | |
| 2392 | |
| 2393 static int | |
| 2394 string_putprop (Lisp_Object string, Lisp_Object property, Lisp_Object value) | |
| 2395 { | |
| 2396 external_plist_put (string_plist_ptr (string), property, value, 0, ERROR_ME); | |
| 2397 return 1; | |
| 2398 } | |
| 2399 | |
| 2400 static int | |
| 2401 string_remprop (Lisp_Object string, Lisp_Object property) | |
| 2402 { | |
| 2403 return external_remprop (string_plist_ptr (string), property, 0, ERROR_ME); | |
| 2404 } | |
| 2405 | |
| 2406 static Lisp_Object | |
| 2407 string_plist (Lisp_Object string) | |
| 2408 { | |
| 2409 return *string_plist_ptr (string); | |
| 2410 } | |
| 2411 | |
| 2720 | 2412 #ifndef MC_ALLOC |
| 442 | 2413 /* No `finalize', or `hash' methods. |
| 2414 internal_hash() already knows how to hash strings and finalization | |
| 2415 is done with the ADDITIONAL_FREE_string macro, which is the | |
| 2416 standard way to do finalization when using | |
| 2417 SWEEP_FIXED_TYPE_BLOCK(). */ | |
| 2720 | 2418 |
| 934 | 2419 DEFINE_BASIC_LRECORD_IMPLEMENTATION_WITH_PROPS ("string", string, |
| 2420 1, /*dumpable-flag*/ | |
| 2421 mark_string, print_string, | |
| 2422 0, string_equal, 0, | |
| 2423 string_description, | |
| 2424 string_getprop, | |
| 2425 string_putprop, | |
| 2426 string_remprop, | |
| 2427 string_plist, | |
| 2428 Lisp_String); | |
| 2720 | 2429 #endif /* not MC_ALLOC */ |
| 2430 | |
| 428 | 2431 /* String blocks contain this many useful bytes. */ |
| 2432 #define STRING_CHARS_BLOCK_SIZE \ | |
| 814 | 2433 ((Bytecount) (8192 - MALLOC_OVERHEAD - \ |
| 2434 ((2 * sizeof (struct string_chars_block *)) \ | |
| 2435 + sizeof (EMACS_INT)))) | |
| 428 | 2436 /* Block header for small strings. */ |
| 2437 struct string_chars_block | |
| 2438 { | |
| 2439 EMACS_INT pos; | |
| 2440 struct string_chars_block *next; | |
| 2441 struct string_chars_block *prev; | |
| 2442 /* Contents of string_chars_block->string_chars are interleaved | |
| 2443 string_chars structures (see below) and the actual string data */ | |
| 2444 unsigned char string_chars[STRING_CHARS_BLOCK_SIZE]; | |
| 2445 }; | |
| 2446 | |
| 2447 static struct string_chars_block *first_string_chars_block; | |
| 2448 static struct string_chars_block *current_string_chars_block; | |
| 2449 | |
| 2450 /* If SIZE is the length of a string, this returns how many bytes | |
| 2451 * the string occupies in string_chars_block->string_chars | |
| 2452 * (including alignment padding). | |
| 2453 */ | |
| 438 | 2454 #define STRING_FULLSIZE(size) \ |
| 826 | 2455 ALIGN_FOR_TYPE (((size) + 1 + sizeof (Lisp_String *)), Lisp_String *) |
| 428 | 2456 |
| 2457 #define BIG_STRING_FULLSIZE_P(fullsize) ((fullsize) >= STRING_CHARS_BLOCK_SIZE) | |
| 2458 #define BIG_STRING_SIZE_P(size) (BIG_STRING_FULLSIZE_P (STRING_FULLSIZE(size))) | |
| 2459 | |
| 454 | 2460 #define STRING_CHARS_FREE_P(ptr) ((ptr)->string == NULL) |
| 2461 #define MARK_STRING_CHARS_AS_FREE(ptr) ((void) ((ptr)->string = NULL)) | |
| 2462 | |
| 2720 | 2463 #ifdef MC_ALLOC |
| 2464 static void | |
| 2465 finalize_string (void *header, int for_disksave) | |
| 2466 { | |
| 2467 if (!for_disksave) | |
| 2468 { | |
| 2469 Lisp_String *s = (Lisp_String *) header; | |
| 2470 Bytecount size = s->size_; | |
| 2471 if (BIG_STRING_SIZE_P (size)) | |
| 2472 xfree (s->data_, Ibyte *); | |
| 2473 } | |
| 2474 } | |
| 2475 | |
| 2476 DEFINE_LRECORD_IMPLEMENTATION_WITH_PROPS ("string", string, | |
| 2477 1, /*dumpable-flag*/ | |
| 2478 mark_string, print_string, | |
| 2479 finalize_string, | |
| 2480 string_equal, 0, | |
| 2481 string_description, | |
| 2482 string_getprop, | |
| 2483 string_putprop, | |
| 2484 string_remprop, | |
| 2485 string_plist, | |
| 2486 Lisp_String); | |
| 2487 | |
| 2488 #endif /* MC_ALLOC */ | |
| 2489 | |
| 428 | 2490 struct string_chars |
| 2491 { | |
| 438 | 2492 Lisp_String *string; |
| 428 | 2493 unsigned char chars[1]; |
| 2494 }; | |
| 2495 | |
| 2496 struct unused_string_chars | |
| 2497 { | |
| 438 | 2498 Lisp_String *string; |
| 428 | 2499 EMACS_INT fullsize; |
| 2500 }; | |
| 2501 | |
| 2502 static void | |
| 2503 init_string_chars_alloc (void) | |
| 2504 { | |
| 2505 first_string_chars_block = xnew (struct string_chars_block); | |
| 2506 first_string_chars_block->prev = 0; | |
| 2507 first_string_chars_block->next = 0; | |
| 2508 first_string_chars_block->pos = 0; | |
| 2509 current_string_chars_block = first_string_chars_block; | |
| 2510 } | |
| 2511 | |
| 1550 | 2512 static Ibyte * |
| 2513 allocate_big_string_chars (Bytecount length) | |
| 2514 { | |
| 2515 Ibyte *p = xnew_array (Ibyte, length); | |
| 2516 INCREMENT_CONS_COUNTER (length, "string chars"); | |
| 2517 return p; | |
| 2518 } | |
| 2519 | |
| 428 | 2520 static struct string_chars * |
| 793 | 2521 allocate_string_chars_struct (Lisp_Object string_it_goes_with, |
| 814 | 2522 Bytecount fullsize) |
| 428 | 2523 { |
| 2524 struct string_chars *s_chars; | |
| 2525 | |
| 438 | 2526 if (fullsize <= |
| 2527 (countof (current_string_chars_block->string_chars) | |
| 2528 - current_string_chars_block->pos)) | |
| 428 | 2529 { |
| 2530 /* This string can fit in the current string chars block */ | |
| 2531 s_chars = (struct string_chars *) | |
| 2532 (current_string_chars_block->string_chars | |
| 2533 + current_string_chars_block->pos); | |
| 2534 current_string_chars_block->pos += fullsize; | |
| 2535 } | |
| 2536 else | |
| 2537 { | |
| 2538 /* Make a new current string chars block */ | |
| 2539 struct string_chars_block *new_scb = xnew (struct string_chars_block); | |
| 2540 | |
| 2541 current_string_chars_block->next = new_scb; | |
| 2542 new_scb->prev = current_string_chars_block; | |
| 2543 new_scb->next = 0; | |
| 2544 current_string_chars_block = new_scb; | |
| 2545 new_scb->pos = fullsize; | |
| 2546 s_chars = (struct string_chars *) | |
| 2547 current_string_chars_block->string_chars; | |
| 2548 } | |
| 2549 | |
| 793 | 2550 s_chars->string = XSTRING (string_it_goes_with); |
| 428 | 2551 |
| 2552 INCREMENT_CONS_COUNTER (fullsize, "string chars"); | |
| 2553 | |
| 2554 return s_chars; | |
| 2555 } | |
| 2556 | |
| 771 | 2557 #ifdef SLEDGEHAMMER_CHECK_ASCII_BEGIN |
| 2558 void | |
| 2559 sledgehammer_check_ascii_begin (Lisp_Object str) | |
| 2560 { | |
| 2561 Bytecount i; | |
| 2562 | |
| 2563 for (i = 0; i < XSTRING_LENGTH (str); i++) | |
| 2564 { | |
| 826 | 2565 if (!byte_ascii_p (string_byte (str, i))) |
| 771 | 2566 break; |
| 2567 } | |
| 2568 | |
| 2569 assert (i == (Bytecount) XSTRING_ASCII_BEGIN (str) || | |
| 2570 (i > MAX_STRING_ASCII_BEGIN && | |
| 2571 (Bytecount) XSTRING_ASCII_BEGIN (str) == | |
| 2572 (Bytecount) MAX_STRING_ASCII_BEGIN)); | |
| 2573 } | |
| 2574 #endif | |
| 2575 | |
| 2576 /* You do NOT want to be calling this! (And if you do, you must call | |
| 851 | 2577 XSET_STRING_ASCII_BEGIN() after modifying the string.) Use ALLOCA () |
| 771 | 2578 instead and then call make_string() like the rest of the world. */ |
| 2579 | |
| 428 | 2580 Lisp_Object |
| 2581 make_uninit_string (Bytecount length) | |
| 2582 { | |
| 438 | 2583 Lisp_String *s; |
| 814 | 2584 Bytecount fullsize = STRING_FULLSIZE (length); |
| 428 | 2585 |
| 438 | 2586 assert (length >= 0 && fullsize > 0); |
| 428 | 2587 |
| 2720 | 2588 #ifdef MC_ALLOC |
| 2589 s = alloc_lrecord_type (Lisp_String, &lrecord_string); | |
| 2590 #else /* not MC_ALLOC */ | |
| 428 | 2591 /* Allocate the string header */ |
| 438 | 2592 ALLOCATE_FIXED_TYPE (string, Lisp_String, s); |
| 793 | 2593 xzero (*s); |
| 771 | 2594 set_lheader_implementation (&s->u.lheader, &lrecord_string); |
| 2720 | 2595 #endif /* not MC_ALLOC */ |
| 2596 | |
| 826 | 2597 set_lispstringp_data (s, BIG_STRING_FULLSIZE_P (fullsize) |
| 2720 | 2598 ? allocate_big_string_chars (length + 1) |
| 2599 : allocate_string_chars_struct (wrap_string (s), | |
| 2600 fullsize)->chars); | |
| 438 | 2601 |
| 826 | 2602 set_lispstringp_length (s, length); |
| 428 | 2603 s->plist = Qnil; |
| 793 | 2604 set_string_byte (wrap_string (s), length, 0); |
| 2605 | |
| 2606 return wrap_string (s); | |
| 428 | 2607 } |
| 2608 | |
| 2609 #ifdef VERIFY_STRING_CHARS_INTEGRITY | |
| 2610 static void verify_string_chars_integrity (void); | |
| 2611 #endif | |
| 2612 | |
| 2613 /* Resize the string S so that DELTA bytes can be inserted starting | |
| 2614 at POS. If DELTA < 0, it means deletion starting at POS. If | |
| 2615 POS < 0, resize the string but don't copy any characters. Use | |
| 2616 this if you're planning on completely overwriting the string. | |
| 2617 */ | |
| 2618 | |
| 2619 void | |
| 793 | 2620 resize_string (Lisp_Object s, Bytecount pos, Bytecount delta) |
| 428 | 2621 { |
| 438 | 2622 Bytecount oldfullsize, newfullsize; |
| 428 | 2623 #ifdef VERIFY_STRING_CHARS_INTEGRITY |
| 2624 verify_string_chars_integrity (); | |
| 2625 #endif | |
| 800 | 2626 #ifdef ERROR_CHECK_TEXT |
| 428 | 2627 if (pos >= 0) |
| 2628 { | |
| 793 | 2629 assert (pos <= XSTRING_LENGTH (s)); |
| 428 | 2630 if (delta < 0) |
| 793 | 2631 assert (pos + (-delta) <= XSTRING_LENGTH (s)); |
| 428 | 2632 } |
| 2633 else | |
| 2634 { | |
| 2635 if (delta < 0) | |
| 793 | 2636 assert ((-delta) <= XSTRING_LENGTH (s)); |
| 428 | 2637 } |
| 800 | 2638 #endif /* ERROR_CHECK_TEXT */ |
| 428 | 2639 |
| 2640 if (delta == 0) | |
| 2641 /* simplest case: no size change. */ | |
| 2642 return; | |
| 438 | 2643 |
| 2644 if (pos >= 0 && delta < 0) | |
| 2645 /* If DELTA < 0, the functions below will delete the characters | |
| 2646 before POS. We want to delete characters *after* POS, however, | |
| 2647 so convert this to the appropriate form. */ | |
| 2648 pos += -delta; | |
| 2649 | |
| 793 | 2650 oldfullsize = STRING_FULLSIZE (XSTRING_LENGTH (s)); |
| 2651 newfullsize = STRING_FULLSIZE (XSTRING_LENGTH (s) + delta); | |
| 438 | 2652 |
| 2653 if (BIG_STRING_FULLSIZE_P (oldfullsize)) | |
| 428 | 2654 { |
| 438 | 2655 if (BIG_STRING_FULLSIZE_P (newfullsize)) |
| 428 | 2656 { |
| 440 | 2657 /* Both strings are big. We can just realloc(). |
| 2658 But careful! If the string is shrinking, we have to | |
| 2659 memmove() _before_ realloc(), and if growing, we have to | |
| 2660 memmove() _after_ realloc() - otherwise the access is | |
| 2661 illegal, and we might crash. */ | |
| 793 | 2662 Bytecount len = XSTRING_LENGTH (s) + 1 - pos; |
| 440 | 2663 |
| 2664 if (delta < 0 && pos >= 0) | |
| 793 | 2665 memmove (XSTRING_DATA (s) + pos + delta, |
| 2666 XSTRING_DATA (s) + pos, len); | |
| 2667 XSET_STRING_DATA | |
| 867 | 2668 (s, (Ibyte *) xrealloc (XSTRING_DATA (s), |
| 793 | 2669 XSTRING_LENGTH (s) + delta + 1)); |
| 440 | 2670 if (delta > 0 && pos >= 0) |
| 793 | 2671 memmove (XSTRING_DATA (s) + pos + delta, XSTRING_DATA (s) + pos, |
| 2672 len); | |
| 1550 | 2673 /* Bump the cons counter. |
| 2674 Conservative; Martin let the increment be delta. */ | |
| 2675 INCREMENT_CONS_COUNTER (newfullsize, "string chars"); | |
| 428 | 2676 } |
| 438 | 2677 else /* String has been demoted from BIG_STRING. */ |
| 428 | 2678 { |
| 867 | 2679 Ibyte *new_data = |
| 438 | 2680 allocate_string_chars_struct (s, newfullsize)->chars; |
| 867 | 2681 Ibyte *old_data = XSTRING_DATA (s); |
| 438 | 2682 |
| 2683 if (pos >= 0) | |
| 2684 { | |
| 2685 memcpy (new_data, old_data, pos); | |
| 2686 memcpy (new_data + pos + delta, old_data + pos, | |
| 793 | 2687 XSTRING_LENGTH (s) + 1 - pos); |
| 438 | 2688 } |
| 793 | 2689 XSET_STRING_DATA (s, new_data); |
| 1726 | 2690 xfree (old_data, Ibyte *); |
| 438 | 2691 } |
| 2692 } | |
| 2693 else /* old string is small */ | |
| 2694 { | |
| 2695 if (oldfullsize == newfullsize) | |
| 2696 { | |
| 2697 /* special case; size change but the necessary | |
| 2698 allocation size won't change (up or down; code | |
| 2699 somewhere depends on there not being any unused | |
| 2700 allocation space, modulo any alignment | |
| 2701 constraints). */ | |
| 428 | 2702 if (pos >= 0) |
| 2703 { | |
| 867 | 2704 Ibyte *addroff = pos + XSTRING_DATA (s); |
| 428 | 2705 |
| 2706 memmove (addroff + delta, addroff, | |
| 2707 /* +1 due to zero-termination. */ | |
| 793 | 2708 XSTRING_LENGTH (s) + 1 - pos); |
| 428 | 2709 } |
| 2710 } | |
| 2711 else | |
| 2712 { | |
| 867 | 2713 Ibyte *old_data = XSTRING_DATA (s); |
| 2714 Ibyte *new_data = | |
| 438 | 2715 BIG_STRING_FULLSIZE_P (newfullsize) |
| 1550 | 2716 ? allocate_big_string_chars (XSTRING_LENGTH (s) + delta + 1) |
| 438 | 2717 : allocate_string_chars_struct (s, newfullsize)->chars; |
| 2718 | |
| 428 | 2719 if (pos >= 0) |
| 2720 { | |
| 438 | 2721 memcpy (new_data, old_data, pos); |
| 2722 memcpy (new_data + pos + delta, old_data + pos, | |
| 793 | 2723 XSTRING_LENGTH (s) + 1 - pos); |
| 428 | 2724 } |
| 793 | 2725 XSET_STRING_DATA (s, new_data); |
| 438 | 2726 |
| 2727 { | |
| 2728 /* We need to mark this chunk of the string_chars_block | |
| 2729 as unused so that compact_string_chars() doesn't | |
| 2730 freak. */ | |
| 2731 struct string_chars *old_s_chars = (struct string_chars *) | |
| 2732 ((char *) old_data - offsetof (struct string_chars, chars)); | |
| 2733 /* Sanity check to make sure we aren't hosed by strange | |
| 2734 alignment/padding. */ | |
| 793 | 2735 assert (old_s_chars->string == XSTRING (s)); |
| 454 | 2736 MARK_STRING_CHARS_AS_FREE (old_s_chars); |
| 438 | 2737 ((struct unused_string_chars *) old_s_chars)->fullsize = |
| 2738 oldfullsize; | |
| 2739 } | |
| 428 | 2740 } |
| 438 | 2741 } |
| 2742 | |
| 793 | 2743 XSET_STRING_LENGTH (s, XSTRING_LENGTH (s) + delta); |
| 438 | 2744 /* If pos < 0, the string won't be zero-terminated. |
| 2745 Terminate now just to make sure. */ | |
| 793 | 2746 XSTRING_DATA (s)[XSTRING_LENGTH (s)] = '\0'; |
| 438 | 2747 |
| 2748 if (pos >= 0) | |
| 793 | 2749 /* We also have to adjust all of the extent indices after the |
| 2750 place we did the change. We say "pos - 1" because | |
| 2751 adjust_extents() is exclusive of the starting position | |
| 2752 passed to it. */ | |
| 2753 adjust_extents (s, pos - 1, XSTRING_LENGTH (s), delta); | |
| 428 | 2754 |
| 2755 #ifdef VERIFY_STRING_CHARS_INTEGRITY | |
| 2756 verify_string_chars_integrity (); | |
| 2757 #endif | |
| 2758 } | |
| 2759 | |
| 2760 #ifdef MULE | |
| 2761 | |
| 771 | 2762 /* WARNING: If you modify an existing string, you must call |
| 2763 CHECK_LISP_WRITEABLE() before and bump_string_modiff() afterwards. */ | |
| 428 | 2764 void |
| 867 | 2765 set_string_char (Lisp_Object s, Charcount i, Ichar c) |
| 428 | 2766 { |
| 867 | 2767 Ibyte newstr[MAX_ICHAR_LEN]; |
| 771 | 2768 Bytecount bytoff = string_index_char_to_byte (s, i); |
| 867 | 2769 Bytecount oldlen = itext_ichar_len (XSTRING_DATA (s) + bytoff); |
| 2770 Bytecount newlen = set_itext_ichar (newstr, c); | |
| 428 | 2771 |
| 793 | 2772 sledgehammer_check_ascii_begin (s); |
| 428 | 2773 if (oldlen != newlen) |
| 2774 resize_string (s, bytoff, newlen - oldlen); | |
| 793 | 2775 /* Remember, XSTRING_DATA (s) might have changed so we can't cache it. */ |
| 2776 memcpy (XSTRING_DATA (s) + bytoff, newstr, newlen); | |
| 771 | 2777 if (oldlen != newlen) |
| 2778 { | |
| 793 | 2779 if (newlen > 1 && i <= (Charcount) XSTRING_ASCII_BEGIN (s)) |
| 771 | 2780 /* Everything starting with the new char is no longer part of |
| 2781 ascii_begin */ | |
| 793 | 2782 XSET_STRING_ASCII_BEGIN (s, i); |
| 2783 else if (newlen == 1 && i == (Charcount) XSTRING_ASCII_BEGIN (s)) | |
| 771 | 2784 /* We've extended ascii_begin, and we have to figure out how much by */ |
| 2785 { | |
| 2786 Bytecount j; | |
| 814 | 2787 for (j = (Bytecount) i + 1; j < XSTRING_LENGTH (s); j++) |
| 771 | 2788 { |
| 826 | 2789 if (!byte_ascii_p (XSTRING_DATA (s)[j])) |
| 771 | 2790 break; |
| 2791 } | |
| 814 | 2792 XSET_STRING_ASCII_BEGIN (s, min (j, (Bytecount) MAX_STRING_ASCII_BEGIN)); |
| 771 | 2793 } |
| 2794 } | |
| 793 | 2795 sledgehammer_check_ascii_begin (s); |
| 428 | 2796 } |
| 2797 | |
| 2798 #endif /* MULE */ | |
| 2799 | |
| 2800 DEFUN ("make-string", Fmake_string, 2, 2, 0, /* | |
| 444 | 2801 Return a new string consisting of LENGTH copies of CHARACTER. |
| 2802 LENGTH must be a non-negative integer. | |
| 428 | 2803 */ |
| 444 | 2804 (length, character)) |
| 428 | 2805 { |
| 2806 CHECK_NATNUM (length); | |
| 444 | 2807 CHECK_CHAR_COERCE_INT (character); |
| 428 | 2808 { |
| 867 | 2809 Ibyte init_str[MAX_ICHAR_LEN]; |
| 2810 int len = set_itext_ichar (init_str, XCHAR (character)); | |
| 428 | 2811 Lisp_Object val = make_uninit_string (len * XINT (length)); |
| 2812 | |
| 2813 if (len == 1) | |
| 771 | 2814 { |
| 2815 /* Optimize the single-byte case */ | |
| 2816 memset (XSTRING_DATA (val), XCHAR (character), XSTRING_LENGTH (val)); | |
| 793 | 2817 XSET_STRING_ASCII_BEGIN (val, min (MAX_STRING_ASCII_BEGIN, |
| 2818 len * XINT (length))); | |
| 771 | 2819 } |
| 428 | 2820 else |
| 2821 { | |
| 647 | 2822 EMACS_INT i; |
| 867 | 2823 Ibyte *ptr = XSTRING_DATA (val); |
| 428 | 2824 |
| 2720 | 2825 #ifdef MC_ALLOC |
| 2826 /* Need this for the new allocator: strings are using the uid | |
| 2827 field for ascii_begin. The uid field is set for debugging, | |
| 2828 but the string code assumes here that ascii_begin is always | |
| 2829 zero, when not touched. This assumption is not true with | |
| 2830 the new allocator, so ascii_begin has to be set to zero | |
| 2831 here. */ | |
| 2832 XSET_STRING_ASCII_BEGIN (val, 0); | |
| 2833 #endif /* not MC_ALLOC */ | |
| 2834 | |
| 428 | 2835 for (i = XINT (length); i; i--) |
| 2836 { | |
| 867 | 2837 Ibyte *init_ptr = init_str; |
| 428 | 2838 switch (len) |
| 2839 { | |
| 2840 case 4: *ptr++ = *init_ptr++; | |
| 2841 case 3: *ptr++ = *init_ptr++; | |
| 2842 case 2: *ptr++ = *init_ptr++; | |
| 2843 case 1: *ptr++ = *init_ptr++; | |
| 2844 } | |
| 2845 } | |
| 2846 } | |
| 771 | 2847 sledgehammer_check_ascii_begin (val); |
| 428 | 2848 return val; |
| 2849 } | |
| 2850 } | |
| 2851 | |
| 2852 DEFUN ("string", Fstring, 0, MANY, 0, /* | |
| 2853 Concatenate all the argument characters and make the result a string. | |
| 2854 */ | |
| 2855 (int nargs, Lisp_Object *args)) | |
| 2856 { | |
| 2367 | 2857 Ibyte *storage = alloca_ibytes (nargs * MAX_ICHAR_LEN); |
| 867 | 2858 Ibyte *p = storage; |
| 428 | 2859 |
| 2860 for (; nargs; nargs--, args++) | |
| 2861 { | |
| 2862 Lisp_Object lisp_char = *args; | |
| 2863 CHECK_CHAR_COERCE_INT (lisp_char); | |
| 867 | 2864 p += set_itext_ichar (p, XCHAR (lisp_char)); |
| 428 | 2865 } |
| 2866 return make_string (storage, p - storage); | |
| 2867 } | |
| 2868 | |
| 771 | 2869 /* Initialize the ascii_begin member of a string to the correct value. */ |
| 2870 | |
| 2871 void | |
| 2872 init_string_ascii_begin (Lisp_Object string) | |
| 2873 { | |
| 2874 #ifdef MULE | |
| 2875 int i; | |
| 2876 Bytecount length = XSTRING_LENGTH (string); | |
| 867 | 2877 Ibyte *contents = XSTRING_DATA (string); |
| 771 | 2878 |
| 2879 for (i = 0; i < length; i++) | |
| 2880 { | |
| 826 | 2881 if (!byte_ascii_p (contents[i])) |
| 771 | 2882 break; |
| 2883 } | |
| 793 | 2884 XSET_STRING_ASCII_BEGIN (string, min (i, MAX_STRING_ASCII_BEGIN)); |
| 771 | 2885 #else |
| 793 | 2886 XSET_STRING_ASCII_BEGIN (string, min (XSTRING_LENGTH (string), |
| 2887 MAX_STRING_ASCII_BEGIN)); | |
| 771 | 2888 #endif |
| 2889 sledgehammer_check_ascii_begin (string); | |
| 2890 } | |
| 428 | 2891 |
| 2892 /* Take some raw memory, which MUST already be in internal format, | |
| 2893 and package it up into a Lisp string. */ | |
| 2894 Lisp_Object | |
| 867 | 2895 make_string (const Ibyte *contents, Bytecount length) |
| 428 | 2896 { |
| 2897 Lisp_Object val; | |
| 2898 | |
| 2899 /* Make sure we find out about bad make_string's when they happen */ | |
| 800 | 2900 #if defined (ERROR_CHECK_TEXT) && defined (MULE) |
| 428 | 2901 bytecount_to_charcount (contents, length); /* Just for the assertions */ |
| 2902 #endif | |
| 2903 | |
| 2904 val = make_uninit_string (length); | |
| 2905 memcpy (XSTRING_DATA (val), contents, length); | |
| 771 | 2906 init_string_ascii_begin (val); |
| 2907 sledgehammer_check_ascii_begin (val); | |
| 428 | 2908 return val; |
| 2909 } | |
| 2910 | |
| 2911 /* Take some raw memory, encoded in some external data format, | |
| 2912 and convert it into a Lisp string. */ | |
| 2913 Lisp_Object | |
| 442 | 2914 make_ext_string (const Extbyte *contents, EMACS_INT length, |
| 440 | 2915 Lisp_Object coding_system) |
| 428 | 2916 { |
| 440 | 2917 Lisp_Object string; |
| 2918 TO_INTERNAL_FORMAT (DATA, (contents, length), | |
| 2919 LISP_STRING, string, | |
| 2920 coding_system); | |
| 2921 return string; | |
| 428 | 2922 } |
| 2923 | |
| 2924 Lisp_Object | |
| 867 | 2925 build_intstring (const Ibyte *str) |
| 771 | 2926 { |
| 2927 /* Some strlen's crash and burn if passed null. */ | |
| 814 | 2928 return make_string (str, (str ? qxestrlen (str) : (Bytecount) 0)); |
| 771 | 2929 } |
| 2930 | |
| 2931 Lisp_Object | |
| 867 | 2932 build_string (const CIbyte *str) |
| 428 | 2933 { |
| 2934 /* Some strlen's crash and burn if passed null. */ | |
| 867 | 2935 return make_string ((const Ibyte *) str, (str ? strlen (str) : 0)); |
| 428 | 2936 } |
| 2937 | |
| 2938 Lisp_Object | |
| 593 | 2939 build_ext_string (const Extbyte *str, Lisp_Object coding_system) |
| 428 | 2940 { |
| 2941 /* Some strlen's crash and burn if passed null. */ | |
| 2367 | 2942 return make_ext_string ((const Extbyte *) str, |
| 2943 (str ? dfc_external_data_len (str, coding_system) : | |
| 2944 0), | |
| 440 | 2945 coding_system); |
| 428 | 2946 } |
| 2947 | |
| 2948 Lisp_Object | |
| 867 | 2949 build_msg_intstring (const Ibyte *str) |
| 428 | 2950 { |
| 771 | 2951 return build_intstring (GETTEXT (str)); |
| 2952 } | |
| 2953 | |
| 2954 Lisp_Object | |
| 867 | 2955 build_msg_string (const CIbyte *str) |
| 771 | 2956 { |
| 2957 return build_string (CGETTEXT (str)); | |
| 428 | 2958 } |
| 2959 | |
| 2960 Lisp_Object | |
| 867 | 2961 make_string_nocopy (const Ibyte *contents, Bytecount length) |
| 428 | 2962 { |
| 438 | 2963 Lisp_String *s; |
| 428 | 2964 Lisp_Object val; |
| 2965 | |
| 2966 /* Make sure we find out about bad make_string_nocopy's when they happen */ | |
| 800 | 2967 #if defined (ERROR_CHECK_TEXT) && defined (MULE) |
| 428 | 2968 bytecount_to_charcount (contents, length); /* Just for the assertions */ |
| 2969 #endif | |
| 2970 | |
| 2720 | 2971 #ifdef MC_ALLOC |
| 2972 s = alloc_lrecord_type (Lisp_String, &lrecord_string); | |
| 2973 mcpro (wrap_pointer_1 (s)); /* otherwise nocopy_strings get | |
| 2974 collected and static data is tried to | |
| 2975 be freed. */ | |
| 2976 #else /* not MC_ALLOC */ | |
| 428 | 2977 /* Allocate the string header */ |
| 438 | 2978 ALLOCATE_FIXED_TYPE (string, Lisp_String, s); |
| 771 | 2979 set_lheader_implementation (&s->u.lheader, &lrecord_string); |
| 2980 SET_C_READONLY_RECORD_HEADER (&s->u.lheader); | |
| 2720 | 2981 #endif /* not MC_ALLOC */ |
| 428 | 2982 s->plist = Qnil; |
| 867 | 2983 set_lispstringp_data (s, (Ibyte *) contents); |
| 826 | 2984 set_lispstringp_length (s, length); |
| 793 | 2985 val = wrap_string (s); |
| 771 | 2986 init_string_ascii_begin (val); |
| 2987 sledgehammer_check_ascii_begin (val); | |
| 2988 | |
| 428 | 2989 return val; |
| 2990 } | |
| 2991 | |
| 2992 | |
| 2720 | 2993 #ifndef MC_ALLOC |
| 428 | 2994 /************************************************************************/ |
| 2995 /* lcrecord lists */ | |
| 2996 /************************************************************************/ | |
| 2997 | |
| 2998 /* Lcrecord lists are used to manage the allocation of particular | |
| 1204 | 2999 sorts of lcrecords, to avoid calling basic_alloc_lcrecord() (and thus |
| 428 | 3000 malloc() and garbage-collection junk) as much as possible. |
| 3001 It is similar to the Blocktype class. | |
| 3002 | |
| 1204 | 3003 See detailed comment in lcrecord.h. |
| 3004 */ | |
| 3005 | |
| 3006 const struct memory_description free_description[] = { | |
| 2551 | 3007 { XD_LISP_OBJECT, offsetof (struct free_lcrecord_header, chain), 0, { 0 }, |
| 1204 | 3008 XD_FLAG_FREE_LISP_OBJECT }, |
| 3009 { XD_END } | |
| 3010 }; | |
| 3011 | |
| 3012 DEFINE_LRECORD_IMPLEMENTATION ("free", free, | |
| 3013 0, /*dumpable-flag*/ | |
| 3014 0, internal_object_printer, | |
| 3015 0, 0, 0, free_description, | |
| 3016 struct free_lcrecord_header); | |
| 3017 | |
| 3018 const struct memory_description lcrecord_list_description[] = { | |
| 2551 | 3019 { XD_LISP_OBJECT, offsetof (struct lcrecord_list, free), 0, { 0 }, |
| 1204 | 3020 XD_FLAG_FREE_LISP_OBJECT }, |
| 3021 { XD_END } | |
| 3022 }; | |
| 428 | 3023 |
| 3024 static Lisp_Object | |
| 3025 mark_lcrecord_list (Lisp_Object obj) | |
| 3026 { | |
| 3027 struct lcrecord_list *list = XLCRECORD_LIST (obj); | |
| 3028 Lisp_Object chain = list->free; | |
| 3029 | |
| 3030 while (!NILP (chain)) | |
| 3031 { | |
| 3032 struct lrecord_header *lheader = XRECORD_LHEADER (chain); | |
| 3033 struct free_lcrecord_header *free_header = | |
| 3034 (struct free_lcrecord_header *) lheader; | |
| 3035 | |
| 442 | 3036 gc_checking_assert |
| 3037 (/* There should be no other pointers to the free list. */ | |
| 3038 ! MARKED_RECORD_HEADER_P (lheader) | |
| 3039 && | |
| 3040 /* Only lcrecords should be here. */ | |
| 1204 | 3041 ! list->implementation->basic_p |
| 442 | 3042 && |
| 3043 /* Only free lcrecords should be here. */ | |
| 3044 free_header->lcheader.free | |
| 3045 && | |
| 3046 /* The type of the lcrecord must be right. */ | |
| 1204 | 3047 lheader->type == lrecord_type_free |
| 442 | 3048 && |
| 3049 /* So must the size. */ | |
| 1204 | 3050 (list->implementation->static_size == 0 || |
| 3051 list->implementation->static_size == list->size) | |
| 442 | 3052 ); |
| 428 | 3053 |
| 3054 MARK_RECORD_HEADER (lheader); | |
| 3055 chain = free_header->chain; | |
| 3056 } | |
| 3057 | |
| 3058 return Qnil; | |
| 3059 } | |
| 3060 | |
| 934 | 3061 DEFINE_LRECORD_IMPLEMENTATION ("lcrecord-list", lcrecord_list, |
| 3062 0, /*dumpable-flag*/ | |
| 3063 mark_lcrecord_list, internal_object_printer, | |
| 1204 | 3064 0, 0, 0, lcrecord_list_description, |
| 3065 struct lcrecord_list); | |
| 934 | 3066 |
| 428 | 3067 Lisp_Object |
| 665 | 3068 make_lcrecord_list (Elemcount size, |
| 442 | 3069 const struct lrecord_implementation *implementation) |
| 428 | 3070 { |
| 1204 | 3071 /* Don't use alloc_lcrecord_type() avoid infinite recursion |
| 3072 allocating this, */ | |
| 3073 struct lcrecord_list *p = (struct lcrecord_list *) | |
| 3074 basic_alloc_lcrecord (sizeof (struct lcrecord_list), | |
| 3075 &lrecord_lcrecord_list); | |
| 428 | 3076 |
| 3077 p->implementation = implementation; | |
| 3078 p->size = size; | |
| 3079 p->free = Qnil; | |
| 793 | 3080 return wrap_lcrecord_list (p); |
| 428 | 3081 } |
| 3082 | |
| 3083 Lisp_Object | |
| 1204 | 3084 alloc_managed_lcrecord (Lisp_Object lcrecord_list) |
| 428 | 3085 { |
| 3086 struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list); | |
| 3087 if (!NILP (list->free)) | |
| 3088 { | |
| 3089 Lisp_Object val = list->free; | |
| 3090 struct free_lcrecord_header *free_header = | |
| 3091 (struct free_lcrecord_header *) XPNTR (val); | |
| 1204 | 3092 struct lrecord_header *lheader = &free_header->lcheader.lheader; |
| 428 | 3093 |
| 3094 #ifdef ERROR_CHECK_GC | |
| 1204 | 3095 /* Major overkill here. */ |
| 428 | 3096 /* There should be no other pointers to the free list. */ |
| 442 | 3097 assert (! MARKED_RECORD_HEADER_P (lheader)); |
| 428 | 3098 /* Only free lcrecords should be here. */ |
| 3099 assert (free_header->lcheader.free); | |
| 1204 | 3100 assert (lheader->type == lrecord_type_free); |
| 3101 /* Only lcrecords should be here. */ | |
| 3102 assert (! (list->implementation->basic_p)); | |
| 3103 #if 0 /* Not used anymore, now that we set the type of the header to | |
| 3104 lrecord_type_free. */ | |
| 428 | 3105 /* The type of the lcrecord must be right. */ |
| 442 | 3106 assert (LHEADER_IMPLEMENTATION (lheader) == list->implementation); |
| 1204 | 3107 #endif /* 0 */ |
| 428 | 3108 /* So must the size. */ |
| 1204 | 3109 assert (list->implementation->static_size == 0 || |
| 3110 list->implementation->static_size == list->size); | |
| 428 | 3111 #endif /* ERROR_CHECK_GC */ |
| 442 | 3112 |
| 428 | 3113 list->free = free_header->chain; |
| 3114 free_header->lcheader.free = 0; | |
| 1204 | 3115 /* Put back the correct type, as we set it to lrecord_type_free. */ |
| 3116 lheader->type = list->implementation->lrecord_type_index; | |
| 3117 zero_sized_lcrecord (free_header, list->size); | |
| 428 | 3118 return val; |
| 3119 } | |
| 3120 else | |
| 1204 | 3121 return wrap_pointer_1 (basic_alloc_lcrecord (list->size, |
| 3122 list->implementation)); | |
| 428 | 3123 } |
| 3124 | |
| 771 | 3125 /* "Free" a Lisp object LCRECORD by placing it on its associated free list |
| 1204 | 3126 LCRECORD_LIST; next time alloc_managed_lcrecord() is called with the |
| 771 | 3127 same LCRECORD_LIST as its parameter, it will return an object from the |
| 3128 free list, which may be this one. Be VERY VERY SURE there are no | |
| 3129 pointers to this object hanging around anywhere where they might be | |
| 3130 used! | |
| 3131 | |
| 3132 The first thing this does before making any global state change is to | |
| 3133 call the finalize method of the object, if it exists. */ | |
| 3134 | |
| 428 | 3135 void |
| 3136 free_managed_lcrecord (Lisp_Object lcrecord_list, Lisp_Object lcrecord) | |
| 3137 { | |
| 3138 struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list); | |
| 3139 struct free_lcrecord_header *free_header = | |
| 3140 (struct free_lcrecord_header *) XPNTR (lcrecord); | |
| 442 | 3141 struct lrecord_header *lheader = &free_header->lcheader.lheader; |
| 3142 const struct lrecord_implementation *implementation | |
| 428 | 3143 = LHEADER_IMPLEMENTATION (lheader); |
| 3144 | |
| 771 | 3145 /* Finalizer methods may try to free objects within them, which typically |
| 3146 won't be marked and thus are scheduled for demolition. Putting them | |
| 3147 on the free list would be very bad, as we'd have xfree()d memory in | |
| 3148 the list. Even if for some reason the objects are still live | |
| 3149 (generally a logic error!), we still will have problems putting such | |
| 3150 an object on the free list right now (e.g. we'd have to avoid calling | |
| 3151 the finalizer twice, etc.). So basically, those finalizers should not | |
| 3152 be freeing any objects if during GC. Abort now to catch those | |
| 3153 problems. */ | |
| 3154 gc_checking_assert (!gc_in_progress); | |
| 3155 | |
| 428 | 3156 /* Make sure the size is correct. This will catch, for example, |
| 3157 putting a window configuration on the wrong free list. */ | |
| 1204 | 3158 gc_checking_assert (detagged_lisp_object_size (lheader) == list->size); |
| 771 | 3159 /* Make sure the object isn't already freed. */ |
| 3160 gc_checking_assert (!free_header->lcheader.free); | |
| 2367 | 3161 /* Freeing stuff in dumped memory is bad. If you trip this, you |
| 3162 may need to check for this before freeing. */ | |
| 3163 gc_checking_assert (!OBJECT_DUMPED_P (lcrecord)); | |
| 771 | 3164 |
| 428 | 3165 if (implementation->finalizer) |
| 3166 implementation->finalizer (lheader, 0); | |
| 1204 | 3167 /* Yes, there are two ways to indicate freeness -- the type is |
| 3168 lrecord_type_free or the ->free flag is set. We used to do only the | |
| 3169 latter; now we do the former as well for KKCC purposes. Probably | |
| 3170 safer in any case, as we will lose quicker this way than keeping | |
| 3171 around an lrecord of apparently correct type but bogus junk in it. */ | |
| 3172 MARK_LRECORD_AS_FREE (lheader); | |
| 428 | 3173 free_header->chain = list->free; |
| 3174 free_header->lcheader.free = 1; | |
| 3175 list->free = lcrecord; | |
| 3176 } | |
| 3177 | |
| 771 | 3178 static Lisp_Object all_lcrecord_lists[countof (lrecord_implementations_table)]; |
| 3179 | |
| 3180 void * | |
| 3181 alloc_automanaged_lcrecord (Bytecount size, | |
| 3182 const struct lrecord_implementation *imp) | |
| 3183 { | |
| 3184 if (EQ (all_lcrecord_lists[imp->lrecord_type_index], Qzero)) | |
| 3185 all_lcrecord_lists[imp->lrecord_type_index] = | |
| 3186 make_lcrecord_list (size, imp); | |
| 3187 | |
| 1204 | 3188 return XPNTR (alloc_managed_lcrecord |
| 771 | 3189 (all_lcrecord_lists[imp->lrecord_type_index])); |
| 3190 } | |
| 3191 | |
| 3192 void | |
| 3193 free_lcrecord (Lisp_Object rec) | |
| 3194 { | |
| 3195 int type = XRECORD_LHEADER (rec)->type; | |
| 3196 | |
| 3197 assert (!EQ (all_lcrecord_lists[type], Qzero)); | |
| 3198 | |
| 3199 free_managed_lcrecord (all_lcrecord_lists[type], rec); | |
| 3200 } | |
| 2720 | 3201 #endif /* not MC_ALLOC */ |
| 428 | 3202 |
| 3203 | |
| 3204 DEFUN ("purecopy", Fpurecopy, 1, 1, 0, /* | |
| 3205 Kept for compatibility, returns its argument. | |
| 3206 Old: | |
| 3207 Make a copy of OBJECT in pure storage. | |
| 3208 Recursively copies contents of vectors and cons cells. | |
| 3209 Does not copy symbols. | |
| 3210 */ | |
| 444 | 3211 (object)) |
| 428 | 3212 { |
| 444 | 3213 return object; |
| 428 | 3214 } |
| 3215 | |
| 3216 | |
| 3217 /************************************************************************/ | |
| 3218 /* Garbage Collection */ | |
| 3219 /************************************************************************/ | |
| 3220 | |
| 442 | 3221 /* All the built-in lisp object types are enumerated in `enum lrecord_type'. |
| 3222 Additional ones may be defined by a module (none yet). We leave some | |
| 3223 room in `lrecord_implementations_table' for such new lisp object types. */ | |
| 647 | 3224 const struct lrecord_implementation *lrecord_implementations_table[(int)lrecord_type_last_built_in_type + MODULE_DEFINABLE_TYPE_COUNT]; |
| 3225 int lrecord_type_count = lrecord_type_last_built_in_type; | |
| 1676 | 3226 #ifndef USE_KKCC |
| 442 | 3227 /* Object marker functions are in the lrecord_implementation structure. |
| 3228 But copying them to a parallel array is much more cache-friendly. | |
| 3229 This hack speeds up (garbage-collect) by about 5%. */ | |
| 3230 Lisp_Object (*lrecord_markers[countof (lrecord_implementations_table)]) (Lisp_Object); | |
| 1676 | 3231 #endif /* not USE_KKCC */ |
| 428 | 3232 |
| 3233 struct gcpro *gcprolist; | |
| 3234 | |
| 771 | 3235 /* We want the staticpro list relocated, but not the pointers found |
| 3236 therein, because they refer to locations in the global data segment, not | |
| 3237 in the heap; we only dump heap objects. Hence we use a trivial | |
| 3238 description, as for pointerless objects. (Note that the data segment | |
| 3239 objects, which are global variables like Qfoo or Vbar, themselves are | |
| 3240 pointers to heap objects. Each needs to be described to pdump as a | |
| 3241 "root pointer"; this happens in the call to staticpro(). */ | |
| 1204 | 3242 static const struct memory_description staticpro_description_1[] = { |
| 452 | 3243 { XD_END } |
| 3244 }; | |
| 3245 | |
| 1204 | 3246 static const struct sized_memory_description staticpro_description = { |
| 452 | 3247 sizeof (Lisp_Object *), |
| 3248 staticpro_description_1 | |
| 3249 }; | |
| 3250 | |
| 1204 | 3251 static const struct memory_description staticpros_description_1[] = { |
| 452 | 3252 XD_DYNARR_DESC (Lisp_Object_ptr_dynarr, &staticpro_description), |
| 3253 { XD_END } | |
| 3254 }; | |
| 3255 | |
| 1204 | 3256 static const struct sized_memory_description staticpros_description = { |
| 452 | 3257 sizeof (Lisp_Object_ptr_dynarr), |
| 3258 staticpros_description_1 | |
| 3259 }; | |
| 3260 | |
| 771 | 3261 #ifdef DEBUG_XEMACS |
| 3262 | |
| 1204 | 3263 static const struct memory_description staticpro_one_name_description_1[] = { |
| 2367 | 3264 { XD_ASCII_STRING, 0 }, |
| 771 | 3265 { XD_END } |
| 3266 }; | |
| 3267 | |
| 1204 | 3268 static const struct sized_memory_description staticpro_one_name_description = { |
| 771 | 3269 sizeof (char *), |
| 3270 staticpro_one_name_description_1 | |
| 3271 }; | |
| 3272 | |
| 1204 | 3273 static const struct memory_description staticpro_names_description_1[] = { |
| 771 | 3274 XD_DYNARR_DESC (char_ptr_dynarr, &staticpro_one_name_description), |
| 3275 { XD_END } | |
| 3276 }; | |
| 3277 | |
| 1204 | 3278 |
| 3279 extern const struct sized_memory_description staticpro_names_description; | |
| 3280 | |
| 3281 const struct sized_memory_description staticpro_names_description = { | |
| 771 | 3282 sizeof (char_ptr_dynarr), |
| 3283 staticpro_names_description_1 | |
| 3284 }; | |
| 3285 | |
| 3286 /* Help debug crashes gc-marking a staticpro'ed object. */ | |
| 3287 | |
| 3288 Lisp_Object_ptr_dynarr *staticpros; | |
| 3289 char_ptr_dynarr *staticpro_names; | |
| 3290 | |
| 3291 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3292 garbage collection, and for dumping. */ | |
| 3293 void | |
| 3294 staticpro_1 (Lisp_Object *varaddress, char *varname) | |
| 3295 { | |
| 3296 Dynarr_add (staticpros, varaddress); | |
| 3297 Dynarr_add (staticpro_names, varname); | |
| 1204 | 3298 dump_add_root_lisp_object (varaddress); |
| 771 | 3299 } |
| 3300 | |
| 3301 | |
| 3302 Lisp_Object_ptr_dynarr *staticpros_nodump; | |
| 3303 char_ptr_dynarr *staticpro_nodump_names; | |
| 3304 | |
| 3305 /* Mark the Lisp_Object at heap VARADDRESS as a root object for | |
| 3306 garbage collection, but not for dumping. (See below.) */ | |
| 3307 void | |
| 3308 staticpro_nodump_1 (Lisp_Object *varaddress, char *varname) | |
| 3309 { | |
| 3310 Dynarr_add (staticpros_nodump, varaddress); | |
| 3311 Dynarr_add (staticpro_nodump_names, varname); | |
| 3312 } | |
| 3313 | |
| 996 | 3314 #ifdef HAVE_SHLIB |
| 3315 /* Stop treating the Lisp_Object at non-heap VARADDRESS as a root object | |
| 3316 for garbage collection, but not for dumping. */ | |
| 3317 void | |
| 3318 unstaticpro_nodump_1 (Lisp_Object *varaddress, char *varname) | |
| 3319 { | |
| 3320 Dynarr_delete_object (staticpros, varaddress); | |
| 3321 Dynarr_delete_object (staticpro_names, varname); | |
| 3322 } | |
| 3323 #endif | |
| 3324 | |
| 771 | 3325 #else /* not DEBUG_XEMACS */ |
| 3326 | |
| 452 | 3327 Lisp_Object_ptr_dynarr *staticpros; |
| 3328 | |
| 3329 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3330 garbage collection, and for dumping. */ | |
| 428 | 3331 void |
| 3332 staticpro (Lisp_Object *varaddress) | |
| 3333 { | |
| 452 | 3334 Dynarr_add (staticpros, varaddress); |
| 1204 | 3335 dump_add_root_lisp_object (varaddress); |
| 428 | 3336 } |
| 3337 | |
| 442 | 3338 |
| 452 | 3339 Lisp_Object_ptr_dynarr *staticpros_nodump; |
| 3340 | |
| 771 | 3341 /* Mark the Lisp_Object at heap VARADDRESS as a root object for garbage |
| 3342 collection, but not for dumping. This is used for objects where the | |
| 3343 only sure pointer is in the heap (rather than in the global data | |
| 3344 segment, as must be the case for pdump root pointers), but not inside of | |
| 3345 another Lisp object (where it will be marked as a result of that Lisp | |
| 3346 object's mark method). The call to staticpro_nodump() must occur *BOTH* | |
| 3347 at initialization time and at "reinitialization" time (startup, after | |
| 3348 pdump load.) (For example, this is the case with the predicate symbols | |
| 3349 for specifier and coding system types. The pointer to this symbol is | |
| 3350 inside of a methods structure, which is allocated on the heap. The | |
| 3351 methods structure will be written out to the pdump data file, and may be | |
| 3352 reloaded at a different address.) | |
| 3353 | |
| 3354 #### The necessity for reinitialization is a bug in pdump. Pdump should | |
| 3355 automatically regenerate the staticpro()s for these symbols when it | |
| 3356 loads the data in. */ | |
| 3357 | |
| 428 | 3358 void |
| 3359 staticpro_nodump (Lisp_Object *varaddress) | |
| 3360 { | |
| 452 | 3361 Dynarr_add (staticpros_nodump, varaddress); |
| 428 | 3362 } |
| 3363 | |
| 996 | 3364 #ifdef HAVE_SHLIB |
| 3365 /* Unmark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3366 garbage collection, but not for dumping. */ | |
| 3367 void | |
| 3368 unstaticpro_nodump (Lisp_Object *varaddress) | |
| 3369 { | |
| 3370 Dynarr_delete_object (staticpros, varaddress); | |
| 3371 } | |
| 3372 #endif | |
| 3373 | |
| 771 | 3374 #endif /* not DEBUG_XEMACS */ |
| 3375 | |
| 2720 | 3376 |
| 3377 | |
| 3378 | |
| 3379 | |
| 3380 #ifdef MC_ALLOC | |
| 3381 static const struct memory_description mcpro_description_1[] = { | |
| 3382 { XD_END } | |
| 3383 }; | |
| 3384 | |
| 3385 static const struct sized_memory_description mcpro_description = { | |
| 3386 sizeof (Lisp_Object *), | |
| 3387 mcpro_description_1 | |
| 3388 }; | |
| 3389 | |
| 3390 static const struct memory_description mcpros_description_1[] = { | |
| 3391 XD_DYNARR_DESC (Lisp_Object_dynarr, &mcpro_description), | |
| 3392 { XD_END } | |
| 3393 }; | |
| 3394 | |
| 3395 static const struct sized_memory_description mcpros_description = { | |
| 3396 sizeof (Lisp_Object_dynarr), | |
| 3397 mcpros_description_1 | |
| 3398 }; | |
| 3399 | |
| 3400 #ifdef DEBUG_XEMACS | |
| 3401 | |
| 3402 static const struct memory_description mcpro_one_name_description_1[] = { | |
| 3403 { XD_ASCII_STRING, 0 }, | |
| 3404 { XD_END } | |
| 3405 }; | |
| 3406 | |
| 3407 static const struct sized_memory_description mcpro_one_name_description = { | |
| 3408 sizeof (char *), | |
| 3409 mcpro_one_name_description_1 | |
| 3410 }; | |
| 3411 | |
| 3412 static const struct memory_description mcpro_names_description_1[] = { | |
| 3413 XD_DYNARR_DESC (char_ptr_dynarr, &mcpro_one_name_description), | |
| 3414 { XD_END } | |
| 3415 }; | |
| 3416 | |
| 3417 extern const struct sized_memory_description mcpro_names_description; | |
| 3418 | |
| 3419 const struct sized_memory_description mcpro_names_description = { | |
| 3420 sizeof (char_ptr_dynarr), | |
| 3421 mcpro_names_description_1 | |
| 3422 }; | |
| 3423 | |
| 3424 /* Help debug crashes gc-marking a mcpro'ed object. */ | |
| 3425 | |
| 3426 Lisp_Object_dynarr *mcpros; | |
| 3427 char_ptr_dynarr *mcpro_names; | |
| 3428 | |
| 3429 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3430 garbage collection, and for dumping. */ | |
| 3431 void | |
| 3432 mcpro_1 (Lisp_Object varaddress, char *varname) | |
| 3433 { | |
| 3434 Dynarr_add (mcpros, varaddress); | |
| 3435 Dynarr_add (mcpro_names, varname); | |
| 3436 } | |
| 3437 | |
| 3438 #else /* not DEBUG_XEMACS */ | |
| 3439 | |
| 3440 Lisp_Object_dynarr *mcpros; | |
| 3441 | |
| 3442 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3443 garbage collection, and for dumping. */ | |
| 3444 void | |
| 3445 mcpro (Lisp_Object varaddress) | |
| 3446 { | |
| 3447 Dynarr_add (mcpros, varaddress); | |
| 3448 } | |
| 3449 | |
| 3450 #endif /* not DEBUG_XEMACS */ | |
| 3451 #endif /* MC_ALLOC */ | |
| 3452 | |
| 442 | 3453 #ifdef ERROR_CHECK_GC |
| 2720 | 3454 #ifdef MC_ALLOC |
| 3455 #define GC_CHECK_LHEADER_INVARIANTS(lheader) do { \ | |
| 3456 struct lrecord_header * GCLI_lh = (lheader); \ | |
| 3457 assert (GCLI_lh != 0); \ | |
| 3458 assert (GCLI_lh->type < (unsigned int) lrecord_type_count); \ | |
| 3459 } while (0) | |
| 3460 #else /* not MC_ALLOC */ | |
| 442 | 3461 #define GC_CHECK_LHEADER_INVARIANTS(lheader) do { \ |
| 3462 struct lrecord_header * GCLI_lh = (lheader); \ | |
| 3463 assert (GCLI_lh != 0); \ | |
| 647 | 3464 assert (GCLI_lh->type < (unsigned int) lrecord_type_count); \ |
| 442 | 3465 assert (! C_READONLY_RECORD_HEADER_P (GCLI_lh) || \ |
| 3466 (MARKED_RECORD_HEADER_P (GCLI_lh) && \ | |
| 3467 LISP_READONLY_RECORD_HEADER_P (GCLI_lh))); \ | |
| 3468 } while (0) | |
| 2720 | 3469 #endif /* not MC_ALLOC */ |
| 442 | 3470 #else |
| 3471 #define GC_CHECK_LHEADER_INVARIANTS(lheader) | |
| 3472 #endif | |
| 3473 | |
| 934 | 3474 |
| 1204 | 3475 static const struct memory_description lisp_object_description_1[] = { |
| 3476 { XD_LISP_OBJECT, 0 }, | |
| 3477 { XD_END } | |
| 3478 }; | |
| 3479 | |
| 3480 const struct sized_memory_description lisp_object_description = { | |
| 3481 sizeof (Lisp_Object), | |
| 3482 lisp_object_description_1 | |
| 3483 }; | |
| 3484 | |
| 3485 #if defined (USE_KKCC) || defined (PDUMP) | |
| 934 | 3486 |
| 3487 /* This function extracts the value of a count variable described somewhere | |
| 3488 else in the description. It is converted corresponding to the type */ | |
| 1204 | 3489 EMACS_INT |
| 3490 lispdesc_indirect_count_1 (EMACS_INT code, | |
| 3491 const struct memory_description *idesc, | |
| 3492 const void *idata) | |
| 934 | 3493 { |
| 3494 EMACS_INT count; | |
| 3495 const void *irdata; | |
| 3496 | |
| 3497 int line = XD_INDIRECT_VAL (code); | |
| 3498 int delta = XD_INDIRECT_DELTA (code); | |
| 3499 | |
| 1204 | 3500 irdata = ((char *) idata) + |
| 3501 lispdesc_indirect_count (idesc[line].offset, idesc, idata); | |
| 934 | 3502 switch (idesc[line].type) |
| 3503 { | |
| 3504 case XD_BYTECOUNT: | |
| 1204 | 3505 count = * (Bytecount *) irdata; |
| 934 | 3506 break; |
| 3507 case XD_ELEMCOUNT: | |
| 1204 | 3508 count = * (Elemcount *) irdata; |
| 934 | 3509 break; |
| 3510 case XD_HASHCODE: | |
| 1204 | 3511 count = * (Hashcode *) irdata; |
| 934 | 3512 break; |
| 3513 case XD_INT: | |
| 1204 | 3514 count = * (int *) irdata; |
| 934 | 3515 break; |
| 3516 case XD_LONG: | |
| 1204 | 3517 count = * (long *) irdata; |
| 934 | 3518 break; |
| 3519 default: | |
| 3520 stderr_out ("Unsupported count type : %d (line = %d, code = %ld)\n", | |
| 1204 | 3521 idesc[line].type, line, (long) code); |
| 2666 | 3522 #if defined(USE_KKCC) && defined(DEBUG_XEMACS) |
| 2645 | 3523 if (gc_in_progress) |
| 3524 kkcc_backtrace (); | |
| 3525 #endif | |
| 1204 | 3526 #ifdef PDUMP |
| 3527 if (in_pdump) | |
| 3528 pdump_backtrace (); | |
| 3529 #endif | |
| 934 | 3530 count = 0; /* warning suppression */ |
| 2500 | 3531 ABORT (); |
| 934 | 3532 } |
| 3533 count += delta; | |
| 3534 return count; | |
| 3535 } | |
| 3536 | |
| 1204 | 3537 /* SDESC is a "description map" (basically, a list of offsets used for |
| 3538 successive indirections) and OBJ is the first object to indirect off of. | |
| 3539 Return the description ultimately found. */ | |
| 3540 | |
| 3541 const struct sized_memory_description * | |
| 3542 lispdesc_indirect_description_1 (const void *obj, | |
| 3543 const struct sized_memory_description *sdesc) | |
| 934 | 3544 { |
| 3545 int pos; | |
| 3546 | |
| 1204 | 3547 for (pos = 0; sdesc[pos].size >= 0; pos++) |
| 3548 obj = * (const void **) ((const char *) obj + sdesc[pos].size); | |
| 3549 | |
| 3550 return (const struct sized_memory_description *) obj; | |
| 3551 } | |
| 3552 | |
| 3553 /* Compute the size of the data at RDATA, described by a single entry | |
| 3554 DESC1 in a description array. OBJ and DESC are used for | |
| 3555 XD_INDIRECT references. */ | |
| 3556 | |
| 3557 static Bytecount | |
| 3558 lispdesc_one_description_line_size (void *rdata, | |
| 3559 const struct memory_description *desc1, | |
| 3560 const void *obj, | |
| 3561 const struct memory_description *desc) | |
| 3562 { | |
| 3563 union_switcheroo: | |
| 3564 switch (desc1->type) | |
| 934 | 3565 { |
| 1204 | 3566 case XD_LISP_OBJECT_ARRAY: |
| 3567 { | |
| 3568 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj); | |
| 3569 return (val * sizeof (Lisp_Object)); | |
| 3570 } | |
| 3571 case XD_LISP_OBJECT: | |
| 3572 case XD_LO_LINK: | |
| 3573 return sizeof (Lisp_Object); | |
| 3574 case XD_OPAQUE_PTR: | |
| 3575 return sizeof (void *); | |
| 2367 | 3576 case XD_BLOCK_PTR: |
| 1204 | 3577 { |
| 3578 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj); | |
| 3579 return val * sizeof (void *); | |
| 3580 } | |
| 2367 | 3581 case XD_BLOCK_ARRAY: |
| 1204 | 3582 { |
| 3583 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj); | |
| 3584 | |
| 3585 return (val * | |
| 2367 | 3586 lispdesc_block_size |
| 2551 | 3587 (rdata, |
| 3588 lispdesc_indirect_description (obj, desc1->data2.descr))); | |
| 1204 | 3589 } |
| 3590 case XD_OPAQUE_DATA_PTR: | |
| 3591 return sizeof (void *); | |
| 3592 case XD_UNION_DYNAMIC_SIZE: | |
| 3593 { | |
| 3594 /* If an explicit size was given in the first-level structure | |
| 3595 description, use it; else compute size based on current union | |
| 3596 constant. */ | |
| 3597 const struct sized_memory_description *sdesc = | |
| 2551 | 3598 lispdesc_indirect_description (obj, desc1->data2.descr); |
| 1204 | 3599 if (sdesc->size) |
| 3600 return sdesc->size; | |
| 3601 else | |
| 3602 { | |
| 3603 desc1 = lispdesc_process_xd_union (desc1, desc, obj); | |
| 3604 if (desc1) | |
| 3605 goto union_switcheroo; | |
| 934 | 3606 break; |
| 1204 | 3607 } |
| 3608 } | |
| 3609 case XD_UNION: | |
| 3610 { | |
| 3611 /* If an explicit size was given in the first-level structure | |
| 3612 description, use it; else compute size based on maximum of all | |
| 3613 possible structures. */ | |
| 3614 const struct sized_memory_description *sdesc = | |
| 2551 | 3615 lispdesc_indirect_description (obj, desc1->data2.descr); |
| 1204 | 3616 if (sdesc->size) |
| 3617 return sdesc->size; | |
| 3618 else | |
| 3619 { | |
| 3620 int count; | |
| 3621 Bytecount max_size = -1, size; | |
| 3622 | |
| 3623 desc1 = sdesc->description; | |
| 3624 | |
| 3625 for (count = 0; desc1[count].type != XD_END; count++) | |
| 3626 { | |
| 3627 size = lispdesc_one_description_line_size (rdata, | |
| 3628 &desc1[count], | |
| 3629 obj, desc); | |
| 3630 if (size > max_size) | |
| 3631 max_size = size; | |
| 3632 } | |
| 3633 return max_size; | |
| 3634 } | |
| 934 | 3635 } |
| 2367 | 3636 case XD_ASCII_STRING: |
| 1204 | 3637 return sizeof (void *); |
| 3638 case XD_DOC_STRING: | |
| 3639 return sizeof (void *); | |
| 3640 case XD_INT_RESET: | |
| 3641 return sizeof (int); | |
| 3642 case XD_BYTECOUNT: | |
| 3643 return sizeof (Bytecount); | |
| 3644 case XD_ELEMCOUNT: | |
| 3645 return sizeof (Elemcount); | |
| 3646 case XD_HASHCODE: | |
| 3647 return sizeof (Hashcode); | |
| 3648 case XD_INT: | |
| 3649 return sizeof (int); | |
| 3650 case XD_LONG: | |
| 3651 return sizeof (long); | |
| 3652 default: | |
| 3653 stderr_out ("Unsupported dump type : %d\n", desc1->type); | |
| 2500 | 3654 ABORT (); |
| 934 | 3655 } |
| 3656 | |
| 1204 | 3657 return 0; |
| 934 | 3658 } |
| 3659 | |
| 3660 | |
| 1204 | 3661 /* Return the size of the memory block (NOT necessarily a structure!) |
| 3662 described by SDESC and pointed to by OBJ. If SDESC records an | |
| 3663 explicit size (i.e. non-zero), it is simply returned; otherwise, | |
| 3664 the size is calculated by the maximum offset and the size of the | |
| 3665 object at that offset, rounded up to the maximum alignment. In | |
| 3666 this case, we may need the object, for example when retrieving an | |
| 3667 "indirect count" of an inlined array (the count is not constant, | |
| 3668 but is specified by one of the elements of the memory block). (It | |
| 3669 is generally not a problem if we return an overly large size -- we | |
| 3670 will simply end up reserving more space than necessary; but if the | |
| 3671 size is too small we could be in serious trouble, in particular | |
| 3672 with nested inlined structures, where there may be alignment | |
| 3673 padding in the middle of a block. #### In fact there is an (at | |
| 3674 least theoretical) problem with an overly large size -- we may | |
| 3675 trigger a protection fault when reading from invalid memory. We | |
| 3676 need to handle this -- perhaps in a stupid but dependable way, | |
| 3677 i.e. by trapping SIGSEGV and SIGBUS.) */ | |
| 3678 | |
| 3679 Bytecount | |
| 2367 | 3680 lispdesc_block_size_1 (const void *obj, Bytecount size, |
| 3681 const struct memory_description *desc) | |
| 934 | 3682 { |
| 1204 | 3683 EMACS_INT max_offset = -1; |
| 934 | 3684 int max_offset_pos = -1; |
| 3685 int pos; | |
| 2367 | 3686 |
| 3687 if (size) | |
| 3688 return size; | |
| 934 | 3689 |
| 3690 for (pos = 0; desc[pos].type != XD_END; pos++) | |
| 3691 { | |
| 1204 | 3692 EMACS_INT offset = lispdesc_indirect_count (desc[pos].offset, desc, obj); |
| 3693 if (offset == max_offset) | |
| 934 | 3694 { |
| 3695 stderr_out ("Two relocatable elements at same offset?\n"); | |
| 2500 | 3696 ABORT (); |
| 934 | 3697 } |
| 1204 | 3698 else if (offset > max_offset) |
| 934 | 3699 { |
| 1204 | 3700 max_offset = offset; |
| 934 | 3701 max_offset_pos = pos; |
| 3702 } | |
| 3703 } | |
| 3704 | |
| 3705 if (max_offset_pos < 0) | |
| 3706 return 0; | |
| 3707 | |
| 1204 | 3708 { |
| 3709 Bytecount size_at_max; | |
| 3710 size_at_max = | |
| 3711 lispdesc_one_description_line_size ((char *) obj + max_offset, | |
| 3712 &desc[max_offset_pos], obj, desc); | |
| 3713 | |
| 3714 /* We have no way of knowing the required alignment for this structure, | |
| 3715 so just make it maximally aligned. */ | |
| 3716 return MAX_ALIGN_SIZE (max_offset + size_at_max); | |
| 3717 } | |
| 3718 } | |
| 3719 | |
| 3720 #endif /* defined (USE_KKCC) || defined (PDUMP) */ | |
| 3721 | |
| 2720 | 3722 #ifdef MC_ALLOC |
| 3723 #define GC_CHECK_NOT_FREE(lheader) \ | |
| 3724 gc_checking_assert (! LRECORD_FREE_P (lheader)); | |
| 3725 #else /* MC_ALLOC */ | |
| 1276 | 3726 #define GC_CHECK_NOT_FREE(lheader) \ |
| 2720 | 3727 gc_checking_assert (! LRECORD_FREE_P (lheader)); \ |
| 1276 | 3728 gc_checking_assert (LHEADER_IMPLEMENTATION (lheader)->basic_p || \ |
| 3729 ! ((struct lcrecord_header *) lheader)->free) | |
| 2720 | 3730 #endif /* MC_ALLOC */ |
| 1276 | 3731 |
| 1204 | 3732 #ifdef USE_KKCC |
| 3733 /* The following functions implement the new mark algorithm. | |
| 3734 They mark objects according to their descriptions. They | |
| 3735 are modeled on the corresponding pdumper procedures. */ | |
| 3736 | |
| 2666 | 3737 #ifdef DEBUG_XEMACS |
| 3738 /* The backtrace for the KKCC mark functions. */ | |
| 3739 #define KKCC_INIT_BT_STACK_SIZE 4096 | |
| 1676 | 3740 |
| 3741 typedef struct | |
| 3742 { | |
| 2645 | 3743 void *obj; |
| 3744 const struct memory_description *desc; | |
| 3745 int pos; | |
| 2666 | 3746 } kkcc_bt_stack_entry; |
| 3747 | |
| 3748 static kkcc_bt_stack_entry *kkcc_bt; | |
| 3749 static int kkcc_bt_stack_size; | |
| 2645 | 3750 static int kkcc_bt_depth = 0; |
| 3751 | |
| 2666 | 3752 static void |
| 3753 kkcc_bt_init (void) | |
| 3754 { | |
| 3755 kkcc_bt_depth = 0; | |
| 3756 kkcc_bt_stack_size = KKCC_INIT_BT_STACK_SIZE; | |
| 3757 kkcc_bt = (kkcc_bt_stack_entry *) | |
| 3758 malloc (kkcc_bt_stack_size * sizeof (kkcc_bt_stack_entry)); | |
| 3759 if (!kkcc_bt) | |
| 3760 { | |
| 3761 stderr_out ("KKCC backtrace stack init failed for size %d\n", | |
| 3762 kkcc_bt_stack_size); | |
| 3763 ABORT (); | |
| 3764 } | |
| 3765 } | |
| 2645 | 3766 |
| 3767 void | |
| 3768 kkcc_backtrace (void) | |
| 3769 { | |
| 3770 int i; | |
| 3771 stderr_out ("KKCC mark stack backtrace :\n"); | |
| 3772 for (i = kkcc_bt_depth - 1; i >= 0; i--) | |
| 3773 { | |
| 2650 | 3774 Lisp_Object obj = wrap_pointer_1 (kkcc_bt[i].obj); |
| 2645 | 3775 stderr_out (" [%d]", i); |
| 2720 | 3776 #ifdef MC_ALLOC |
| 3777 if ((XRECORD_LHEADER (obj)->type >= lrecord_type_last_built_in_type) | |
| 3778 #else /* not MC_ALLOC */ | |
| 2650 | 3779 if ((XRECORD_LHEADER (obj)->type >= lrecord_type_free) |
| 2720 | 3780 #endif /* not MC_ALLOC */ |
| 2650 | 3781 || (!LRECORDP (obj)) |
| 3782 || (!XRECORD_LHEADER_IMPLEMENTATION (obj))) | |
| 2645 | 3783 { |
| 3784 stderr_out (" non Lisp Object"); | |
| 3785 } | |
| 3786 else | |
| 3787 { | |
| 3788 stderr_out (" %s", | |
| 2650 | 3789 XRECORD_LHEADER_IMPLEMENTATION (obj)->name); |
| 2645 | 3790 } |
| 3791 stderr_out (" (addr: 0x%x, desc: 0x%x, ", | |
| 3792 (int) kkcc_bt[i].obj, | |
| 3793 (int) kkcc_bt[i].desc); | |
| 3794 if (kkcc_bt[i].pos >= 0) | |
| 3795 stderr_out ("pos: %d)\n", kkcc_bt[i].pos); | |
| 3796 else | |
| 3797 stderr_out ("root set)\n"); | |
| 3798 } | |
| 3799 } | |
| 3800 | |
| 3801 static void | |
| 2666 | 3802 kkcc_bt_stack_realloc (void) |
| 3803 { | |
| 3804 kkcc_bt_stack_size *= 2; | |
| 3805 kkcc_bt = (kkcc_bt_stack_entry *) | |
| 3806 realloc (kkcc_bt, kkcc_bt_stack_size * sizeof (kkcc_bt_stack_entry)); | |
| 3807 if (!kkcc_bt) | |
| 3808 { | |
| 3809 stderr_out ("KKCC backtrace stack realloc failed for size %d\n", | |
| 3810 kkcc_bt_stack_size); | |
| 3811 ABORT (); | |
| 3812 } | |
| 3813 } | |
| 3814 | |
| 3815 static void | |
| 3816 kkcc_bt_free (void) | |
| 3817 { | |
| 3818 free (kkcc_bt); | |
| 3819 kkcc_bt = 0; | |
| 3820 kkcc_bt_stack_size = 0; | |
| 3821 } | |
| 3822 | |
| 3823 static void | |
| 2645 | 3824 kkcc_bt_push (void *obj, const struct memory_description *desc, |
| 3825 int level, int pos) | |
| 3826 { | |
| 3827 kkcc_bt_depth = level; | |
| 3828 kkcc_bt[kkcc_bt_depth].obj = obj; | |
| 3829 kkcc_bt[kkcc_bt_depth].desc = desc; | |
| 3830 kkcc_bt[kkcc_bt_depth].pos = pos; | |
| 3831 kkcc_bt_depth++; | |
| 2666 | 3832 if (kkcc_bt_depth >= kkcc_bt_stack_size) |
| 3833 kkcc_bt_stack_realloc (); | |
| 2645 | 3834 } |
| 3835 | |
| 3836 #else /* not DEBUG_XEMACS */ | |
| 2666 | 3837 #define kkcc_bt_init() |
| 2645 | 3838 #define kkcc_bt_push(obj, desc, level, pos) |
| 3839 #endif /* not DEBUG_XEMACS */ | |
| 3840 | |
| 2666 | 3841 /* Object memory descriptions are in the lrecord_implementation structure. |
| 3842 But copying them to a parallel array is much more cache-friendly. */ | |
| 3843 const struct memory_description *lrecord_memory_descriptions[countof (lrecord_implementations_table)]; | |
| 3844 | |
| 3845 /* the initial stack size in kkcc_gc_stack_entries */ | |
| 3846 #define KKCC_INIT_GC_STACK_SIZE 16384 | |
| 3847 | |
| 3848 typedef struct | |
| 3849 { | |
| 3850 void *data; | |
| 3851 const struct memory_description *desc; | |
| 3852 #ifdef DEBUG_XEMACS | |
| 3853 int level; | |
| 3854 int pos; | |
| 3855 #endif | |
| 3856 } kkcc_gc_stack_entry; | |
| 3857 | |
| 3858 static kkcc_gc_stack_entry *kkcc_gc_stack_ptr; | |
| 3859 static kkcc_gc_stack_entry *kkcc_gc_stack_top; | |
| 3860 static kkcc_gc_stack_entry *kkcc_gc_stack_last_entry; | |
| 3861 static int kkcc_gc_stack_size; | |
| 3862 | |
| 1676 | 3863 static void |
| 3864 kkcc_gc_stack_init (void) | |
| 3865 { | |
| 3866 kkcc_gc_stack_size = KKCC_INIT_GC_STACK_SIZE; | |
| 3867 kkcc_gc_stack_ptr = (kkcc_gc_stack_entry *) | |
| 3868 malloc (kkcc_gc_stack_size * sizeof (kkcc_gc_stack_entry)); | |
| 3869 if (!kkcc_gc_stack_ptr) | |
| 3870 { | |
| 3871 stderr_out ("stack init failed for size %d\n", kkcc_gc_stack_size); | |
| 2666 | 3872 ABORT (); |
| 1676 | 3873 } |
| 3874 kkcc_gc_stack_top = kkcc_gc_stack_ptr - 1; | |
| 3875 kkcc_gc_stack_last_entry = kkcc_gc_stack_ptr + kkcc_gc_stack_size - 1; | |
| 3876 } | |
| 3877 | |
| 3878 static void | |
| 3879 kkcc_gc_stack_free (void) | |
| 3880 { | |
| 3881 free (kkcc_gc_stack_ptr); | |
| 3882 kkcc_gc_stack_ptr = 0; | |
| 3883 kkcc_gc_stack_top = 0; | |
| 3884 kkcc_gc_stack_size = 0; | |
| 3885 } | |
| 3886 | |
| 3887 static void | |
| 3888 kkcc_gc_stack_realloc (void) | |
| 3889 { | |
| 3890 int current_offset = (int)(kkcc_gc_stack_top - kkcc_gc_stack_ptr); | |
| 3891 kkcc_gc_stack_size *= 2; | |
| 3892 kkcc_gc_stack_ptr = (kkcc_gc_stack_entry *) | |
| 3893 realloc (kkcc_gc_stack_ptr, | |
| 3894 kkcc_gc_stack_size * sizeof (kkcc_gc_stack_entry)); | |
| 3895 if (!kkcc_gc_stack_ptr) | |
| 3896 { | |
| 3897 stderr_out ("stack realloc failed for size %d\n", kkcc_gc_stack_size); | |
| 2666 | 3898 ABORT (); |
| 1676 | 3899 } |
| 3900 kkcc_gc_stack_top = kkcc_gc_stack_ptr + current_offset; | |
| 3901 kkcc_gc_stack_last_entry = kkcc_gc_stack_ptr + kkcc_gc_stack_size - 1; | |
| 3902 } | |
| 3903 | |
| 3904 #define KKCC_GC_STACK_FULL (kkcc_gc_stack_top >= kkcc_gc_stack_last_entry) | |
| 3905 #define KKCC_GC_STACK_EMPTY (kkcc_gc_stack_top < kkcc_gc_stack_ptr) | |
| 3906 | |
| 3907 static void | |
| 2645 | 3908 #ifdef DEBUG_XEMACS |
| 3909 kkcc_gc_stack_push_1 (void *data, const struct memory_description *desc, | |
| 3910 int level, int pos) | |
| 3911 #else | |
| 3912 kkcc_gc_stack_push_1 (void *data, const struct memory_description *desc) | |
| 3913 #endif | |
| 1676 | 3914 { |
| 3915 if (KKCC_GC_STACK_FULL) | |
| 3916 kkcc_gc_stack_realloc(); | |
| 3917 kkcc_gc_stack_top++; | |
| 3918 kkcc_gc_stack_top->data = data; | |
| 3919 kkcc_gc_stack_top->desc = desc; | |
| 2645 | 3920 #ifdef DEBUG_XEMACS |
| 3921 kkcc_gc_stack_top->level = level; | |
| 3922 kkcc_gc_stack_top->pos = pos; | |
| 3923 #endif | |
| 3924 } | |
| 3925 | |
| 3926 #ifdef DEBUG_XEMACS | |
| 3927 #define kkcc_gc_stack_push(data, desc, level, pos) \ | |
| 3928 kkcc_gc_stack_push_1 (data, desc, level, pos) | |
| 3929 #else | |
| 3930 #define kkcc_gc_stack_push(data, desc, level, pos) \ | |
| 3931 kkcc_gc_stack_push_1 (data, desc) | |
| 3932 #endif | |
| 1676 | 3933 |
| 3934 static kkcc_gc_stack_entry * | |
| 3935 kkcc_gc_stack_pop (void) | |
| 3936 { | |
| 3937 if (KKCC_GC_STACK_EMPTY) | |
| 3938 return 0; | |
| 3939 kkcc_gc_stack_top--; | |
| 3940 return kkcc_gc_stack_top + 1; | |
| 3941 } | |
| 3942 | |
| 3943 void | |
| 2645 | 3944 #ifdef DEBUG_XEMACS |
| 3945 kkcc_gc_stack_push_lisp_object_1 (Lisp_Object obj, int level, int pos) | |
| 3946 #else | |
| 3947 kkcc_gc_stack_push_lisp_object_1 (Lisp_Object obj) | |
| 3948 #endif | |
| 1676 | 3949 { |
| 3950 if (XTYPE (obj) == Lisp_Type_Record) | |
| 3951 { | |
| 3952 struct lrecord_header *lheader = XRECORD_LHEADER (obj); | |
| 3953 const struct memory_description *desc; | |
| 3954 GC_CHECK_LHEADER_INVARIANTS (lheader); | |
| 3955 desc = RECORD_DESCRIPTION (lheader); | |
| 3956 if (! MARKED_RECORD_HEADER_P (lheader)) | |
| 3957 { | |
| 3958 MARK_RECORD_HEADER (lheader); | |
| 2666 | 3959 kkcc_gc_stack_push ((void*) lheader, desc, level, pos); |
| 1676 | 3960 } |
| 3961 } | |
| 3962 } | |
| 3963 | |
| 2645 | 3964 #ifdef DEBUG_XEMACS |
| 3965 #define kkcc_gc_stack_push_lisp_object(obj, level, pos) \ | |
| 3966 kkcc_gc_stack_push_lisp_object_1 (obj, level, pos) | |
| 3967 #else | |
| 3968 #define kkcc_gc_stack_push_lisp_object(obj, level, pos) \ | |
| 3969 kkcc_gc_stack_push_lisp_object_1 (obj) | |
| 3970 #endif | |
| 3971 | |
| 1265 | 3972 #ifdef ERROR_CHECK_GC |
| 3973 #define KKCC_DO_CHECK_FREE(obj, allow_free) \ | |
| 3974 do \ | |
| 3975 { \ | |
| 3976 if (!allow_free && XTYPE (obj) == Lisp_Type_Record) \ | |
| 3977 { \ | |
| 3978 struct lrecord_header *lheader = XRECORD_LHEADER (obj); \ | |
| 3979 GC_CHECK_NOT_FREE (lheader); \ | |
| 3980 } \ | |
| 3981 } while (0) | |
| 3982 #else | |
| 3983 #define KKCC_DO_CHECK_FREE(obj, allow_free) | |
| 3984 #endif | |
| 1204 | 3985 |
| 3986 #ifdef ERROR_CHECK_GC | |
| 2645 | 3987 #ifdef DEBUG_XEMACS |
| 1598 | 3988 static void |
| 2645 | 3989 mark_object_maybe_checking_free_1 (Lisp_Object obj, int allow_free, |
| 3990 int level, int pos) | |
| 3991 #else | |
| 3992 static void | |
| 3993 mark_object_maybe_checking_free_1 (Lisp_Object obj, int allow_free) | |
| 3994 #endif | |
| 1204 | 3995 { |
| 1265 | 3996 KKCC_DO_CHECK_FREE (obj, allow_free); |
| 2645 | 3997 kkcc_gc_stack_push_lisp_object (obj, level, pos); |
| 3998 } | |
| 3999 | |
| 4000 #ifdef DEBUG_XEMACS | |
| 4001 #define mark_object_maybe_checking_free(obj, allow_free, level, pos) \ | |
| 4002 mark_object_maybe_checking_free_1 (obj, allow_free, level, pos) | |
| 1204 | 4003 #else |
| 2645 | 4004 #define mark_object_maybe_checking_free(obj, allow_free, level, pos) \ |
| 4005 mark_object_maybe_checking_free_1 (obj, allow_free) | |
| 4006 #endif | |
| 4007 #else /* not ERROR_CHECK_GC */ | |
| 4008 #define mark_object_maybe_checking_free(obj, allow_free, level, pos) \ | |
| 4009 kkcc_gc_stack_push_lisp_object (obj, level, pos) | |
| 4010 #endif /* not ERROR_CHECK_GC */ | |
| 1204 | 4011 |
| 934 | 4012 |
| 4013 /* This function loops all elements of a struct pointer and calls | |
| 4014 mark_with_description with each element. */ | |
| 4015 static void | |
| 2645 | 4016 #ifdef DEBUG_XEMACS |
| 4017 mark_struct_contents_1 (const void *data, | |
| 4018 const struct sized_memory_description *sdesc, | |
| 4019 int count, int level, int pos) | |
| 4020 #else | |
| 4021 mark_struct_contents_1 (const void *data, | |
| 1204 | 4022 const struct sized_memory_description *sdesc, |
| 4023 int count) | |
| 2645 | 4024 #endif |
| 934 | 4025 { |
| 4026 int i; | |
| 4027 Bytecount elsize; | |
| 2367 | 4028 elsize = lispdesc_block_size (data, sdesc); |
| 934 | 4029 |
| 4030 for (i = 0; i < count; i++) | |
| 4031 { | |
| 2645 | 4032 kkcc_gc_stack_push (((char *) data) + elsize * i, sdesc->description, |
| 4033 level, pos); | |
| 934 | 4034 } |
| 4035 } | |
| 4036 | |
| 2645 | 4037 #ifdef DEBUG_XEMACS |
| 4038 #define mark_struct_contents(data, sdesc, count, level, pos) \ | |
| 4039 mark_struct_contents_1 (data, sdesc, count, level, pos) | |
| 4040 #else | |
| 4041 #define mark_struct_contents(data, sdesc, count, level, pos) \ | |
| 4042 mark_struct_contents_1 (data, sdesc, count) | |
| 4043 #endif | |
| 1598 | 4044 |
| 4045 /* This function implements the KKCC mark algorithm. | |
| 4046 Instead of calling mark_object, all the alive Lisp_Objects are pushed | |
| 4047 on the kkcc_gc_stack. This function processes all elements on the stack | |
| 4048 according to their descriptions. */ | |
| 4049 static void | |
| 4050 kkcc_marking (void) | |
| 4051 { | |
| 4052 kkcc_gc_stack_entry *stack_entry = 0; | |
| 4053 void *data = 0; | |
| 4054 const struct memory_description *desc = 0; | |
| 4055 int pos; | |
| 2645 | 4056 #ifdef DEBUG_XEMACS |
| 4057 int level = 0; | |
| 2666 | 4058 kkcc_bt_init (); |
| 2645 | 4059 #endif |
| 1598 | 4060 |
| 4061 while ((stack_entry = kkcc_gc_stack_pop ()) != 0) | |
| 4062 { | |
| 4063 data = stack_entry->data; | |
| 4064 desc = stack_entry->desc; | |
| 2645 | 4065 #ifdef DEBUG_XEMACS |
| 4066 level = stack_entry->level + 1; | |
| 4067 #endif | |
| 4068 | |
| 4069 kkcc_bt_push (data, desc, stack_entry->level, stack_entry->pos); | |
| 1598 | 4070 |
| 2720 | 4071 gc_checking_assert (data); |
| 4072 gc_checking_assert (desc); | |
| 4073 | |
| 1598 | 4074 for (pos = 0; desc[pos].type != XD_END; pos++) |
| 4075 { | |
| 4076 const struct memory_description *desc1 = &desc[pos]; | |
| 4077 const void *rdata = | |
| 4078 (const char *) data + lispdesc_indirect_count (desc1->offset, | |
| 4079 desc, data); | |
| 4080 union_switcheroo: | |
| 4081 | |
| 4082 /* If the flag says don't mark, then don't mark. */ | |
| 4083 if ((desc1->flags) & XD_FLAG_NO_KKCC) | |
| 4084 continue; | |
| 4085 | |
| 4086 switch (desc1->type) | |
| 4087 { | |
| 4088 case XD_BYTECOUNT: | |
| 4089 case XD_ELEMCOUNT: | |
| 4090 case XD_HASHCODE: | |
| 4091 case XD_INT: | |
| 4092 case XD_LONG: | |
| 4093 case XD_INT_RESET: | |
| 4094 case XD_LO_LINK: | |
| 4095 case XD_OPAQUE_PTR: | |
| 4096 case XD_OPAQUE_DATA_PTR: | |
| 2367 | 4097 case XD_ASCII_STRING: |
| 1598 | 4098 case XD_DOC_STRING: |
| 4099 break; | |
| 4100 case XD_LISP_OBJECT: | |
| 4101 { | |
| 4102 const Lisp_Object *stored_obj = (const Lisp_Object *) rdata; | |
| 4103 | |
| 4104 /* Because of the way that tagged objects work (pointers and | |
| 4105 Lisp_Objects have the same representation), XD_LISP_OBJECT | |
| 4106 can be used for untagged pointers. They might be NULL, | |
| 4107 though. */ | |
| 4108 if (EQ (*stored_obj, Qnull_pointer)) | |
| 4109 break; | |
| 2720 | 4110 #ifdef MC_ALLOC |
| 4111 mark_object_maybe_checking_free (*stored_obj, 0, level, pos); | |
| 4112 #else /* not MC_ALLOC */ | |
| 1598 | 4113 mark_object_maybe_checking_free |
| 2645 | 4114 (*stored_obj, (desc1->flags) & XD_FLAG_FREE_LISP_OBJECT, |
| 4115 level, pos); | |
| 1598 | 4116 break; |
| 2720 | 4117 #endif /* not MC_ALLOC */ |
| 1598 | 4118 } |
| 4119 case XD_LISP_OBJECT_ARRAY: | |
| 4120 { | |
| 4121 int i; | |
| 4122 EMACS_INT count = | |
| 4123 lispdesc_indirect_count (desc1->data1, desc, data); | |
| 4124 | |
| 4125 for (i = 0; i < count; i++) | |
| 4126 { | |
| 4127 const Lisp_Object *stored_obj = | |
| 4128 (const Lisp_Object *) rdata + i; | |
| 4129 | |
| 4130 if (EQ (*stored_obj, Qnull_pointer)) | |
| 4131 break; | |
| 2720 | 4132 #ifdef MC_ALLOC |
| 4133 mark_object_maybe_checking_free (*stored_obj, 0, level, pos); | |
| 4134 #else /* not MC_ALLOC */ | |
| 1598 | 4135 mark_object_maybe_checking_free |
| 2645 | 4136 (*stored_obj, (desc1->flags) & XD_FLAG_FREE_LISP_OBJECT, |
| 4137 level, pos); | |
| 2720 | 4138 #endif /* not MC_ALLOC */ |
| 1598 | 4139 } |
| 4140 break; | |
| 4141 } | |
| 2367 | 4142 case XD_BLOCK_PTR: |
| 1598 | 4143 { |
| 4144 EMACS_INT count = lispdesc_indirect_count (desc1->data1, desc, | |
| 4145 data); | |
| 4146 const struct sized_memory_description *sdesc = | |
| 2551 | 4147 lispdesc_indirect_description (data, desc1->data2.descr); |
| 1598 | 4148 const char *dobj = * (const char **) rdata; |
| 4149 if (dobj) | |
| 2645 | 4150 mark_struct_contents (dobj, sdesc, count, level, pos); |
| 1598 | 4151 break; |
| 4152 } | |
| 2367 | 4153 case XD_BLOCK_ARRAY: |
| 1598 | 4154 { |
| 4155 EMACS_INT count = lispdesc_indirect_count (desc1->data1, desc, | |
| 4156 data); | |
| 4157 const struct sized_memory_description *sdesc = | |
| 2551 | 4158 lispdesc_indirect_description (data, desc1->data2.descr); |
| 1598 | 4159 |
| 2645 | 4160 mark_struct_contents (rdata, sdesc, count, level, pos); |
| 1598 | 4161 break; |
| 4162 } | |
| 4163 case XD_UNION: | |
| 4164 case XD_UNION_DYNAMIC_SIZE: | |
| 4165 desc1 = lispdesc_process_xd_union (desc1, desc, data); | |
| 4166 if (desc1) | |
| 4167 goto union_switcheroo; | |
| 4168 break; | |
| 4169 | |
| 4170 default: | |
| 4171 stderr_out ("Unsupported description type : %d\n", desc1->type); | |
| 2645 | 4172 kkcc_backtrace (); |
| 2500 | 4173 ABORT (); |
| 1598 | 4174 } |
| 4175 } | |
| 4176 } | |
| 2666 | 4177 #ifdef DEBUG_XEMACS |
| 4178 kkcc_bt_free (); | |
| 4179 #endif | |
| 1598 | 4180 } |
| 934 | 4181 #endif /* USE_KKCC */ |
| 4182 | |
| 428 | 4183 /* Mark reference to a Lisp_Object. If the object referred to has not been |
| 4184 seen yet, recursively mark all the references contained in it. */ | |
| 4185 | |
| 4186 void | |
| 2286 | 4187 mark_object ( |
| 4188 #ifdef USE_KKCC | |
| 4189 Lisp_Object UNUSED (obj) | |
| 4190 #else | |
| 4191 Lisp_Object obj | |
| 4192 #endif | |
| 4193 ) | |
| 428 | 4194 { |
| 1598 | 4195 #ifdef USE_KKCC |
| 4196 /* this code should never be reached when configured for KKCC */ | |
| 4197 stderr_out ("KKCC: Invalid mark_object call.\n"); | |
| 4198 stderr_out ("Replace mark_object with kkcc_gc_stack_push_lisp_object.\n"); | |
| 2500 | 4199 ABORT (); |
| 1676 | 4200 #else /* not USE_KKCC */ |
| 1598 | 4201 |
| 428 | 4202 tail_recurse: |
| 4203 | |
| 4204 /* Checks we used to perform */ | |
| 4205 /* if (EQ (obj, Qnull_pointer)) return; */ | |
| 4206 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return; */ | |
| 4207 /* if (PURIFIED (XPNTR (obj))) return; */ | |
| 4208 | |
| 4209 if (XTYPE (obj) == Lisp_Type_Record) | |
| 4210 { | |
| 4211 struct lrecord_header *lheader = XRECORD_LHEADER (obj); | |
| 442 | 4212 |
| 4213 GC_CHECK_LHEADER_INVARIANTS (lheader); | |
| 4214 | |
| 1204 | 4215 /* We handle this separately, above, so we can mark free objects */ |
| 1265 | 4216 GC_CHECK_NOT_FREE (lheader); |
| 1204 | 4217 |
| 442 | 4218 /* All c_readonly objects have their mark bit set, |
| 4219 so that we only need to check the mark bit here. */ | |
| 4220 if (! MARKED_RECORD_HEADER_P (lheader)) | |
| 428 | 4221 { |
| 4222 MARK_RECORD_HEADER (lheader); | |
| 442 | 4223 |
| 1598 | 4224 if (RECORD_MARKER (lheader)) |
| 4225 { | |
| 4226 obj = RECORD_MARKER (lheader) (obj); | |
| 4227 if (!NILP (obj)) goto tail_recurse; | |
| 4228 } | |
| 428 | 4229 } |
| 4230 } | |
| 1676 | 4231 #endif /* not KKCC */ |
| 428 | 4232 } |
| 4233 | |
| 4234 | |
| 2720 | 4235 #ifndef MC_ALLOC |
| 428 | 4236 static int gc_count_num_short_string_in_use; |
| 647 | 4237 static Bytecount gc_count_string_total_size; |
| 4238 static Bytecount gc_count_short_string_total_size; | |
| 428 | 4239 |
| 4240 /* static int gc_count_total_records_used, gc_count_records_total_size; */ | |
| 4241 | |
| 4242 | |
| 4243 /* stats on lcrecords in use - kinda kludgy */ | |
| 4244 | |
| 4245 static struct | |
| 4246 { | |
| 4247 int instances_in_use; | |
| 4248 int bytes_in_use; | |
| 4249 int instances_freed; | |
| 4250 int bytes_freed; | |
| 4251 int instances_on_free_list; | |
| 707 | 4252 } lcrecord_stats [countof (lrecord_implementations_table) |
| 4253 + MODULE_DEFINABLE_TYPE_COUNT]; | |
| 428 | 4254 |
| 4255 static void | |
| 442 | 4256 tick_lcrecord_stats (const struct lrecord_header *h, int free_p) |
| 428 | 4257 { |
| 647 | 4258 int type_index = h->type; |
| 428 | 4259 |
| 4260 if (((struct lcrecord_header *) h)->free) | |
| 4261 { | |
| 442 | 4262 gc_checking_assert (!free_p); |
| 428 | 4263 lcrecord_stats[type_index].instances_on_free_list++; |
| 4264 } | |
| 4265 else | |
| 4266 { | |
| 1204 | 4267 Bytecount sz = detagged_lisp_object_size (h); |
| 4268 | |
| 428 | 4269 if (free_p) |
| 4270 { | |
| 4271 lcrecord_stats[type_index].instances_freed++; | |
| 4272 lcrecord_stats[type_index].bytes_freed += sz; | |
| 4273 } | |
| 4274 else | |
| 4275 { | |
| 4276 lcrecord_stats[type_index].instances_in_use++; | |
| 4277 lcrecord_stats[type_index].bytes_in_use += sz; | |
| 4278 } | |
| 4279 } | |
| 4280 } | |
| 2720 | 4281 #endif /* not MC_ALLOC */ |
| 428 | 4282 |
| 4283 | |
| 2720 | 4284 #ifndef MC_ALLOC |
| 428 | 4285 /* Free all unmarked records */ |
| 4286 static void | |
| 4287 sweep_lcrecords_1 (struct lcrecord_header **prev, int *used) | |
| 4288 { | |
| 4289 struct lcrecord_header *header; | |
| 4290 int num_used = 0; | |
| 4291 /* int total_size = 0; */ | |
| 4292 | |
| 4293 xzero (lcrecord_stats); /* Reset all statistics to 0. */ | |
| 4294 | |
| 4295 /* First go through and call all the finalize methods. | |
| 4296 Then go through and free the objects. There used to | |
| 4297 be only one loop here, with the call to the finalizer | |
| 4298 occurring directly before the xfree() below. That | |
| 4299 is marginally faster but much less safe -- if the | |
| 4300 finalize method for an object needs to reference any | |
| 4301 other objects contained within it (and many do), | |
| 4302 we could easily be screwed by having already freed that | |
| 4303 other object. */ | |
| 4304 | |
| 4305 for (header = *prev; header; header = header->next) | |
| 4306 { | |
| 4307 struct lrecord_header *h = &(header->lheader); | |
| 442 | 4308 |
| 4309 GC_CHECK_LHEADER_INVARIANTS (h); | |
| 4310 | |
| 4311 if (! MARKED_RECORD_HEADER_P (h) && ! header->free) | |
| 428 | 4312 { |
| 4313 if (LHEADER_IMPLEMENTATION (h)->finalizer) | |
| 4314 LHEADER_IMPLEMENTATION (h)->finalizer (h, 0); | |
| 4315 } | |
| 4316 } | |
| 4317 | |
| 4318 for (header = *prev; header; ) | |
| 4319 { | |
| 4320 struct lrecord_header *h = &(header->lheader); | |
| 442 | 4321 if (MARKED_RECORD_HEADER_P (h)) |
| 428 | 4322 { |
| 442 | 4323 if (! C_READONLY_RECORD_HEADER_P (h)) |
| 428 | 4324 UNMARK_RECORD_HEADER (h); |
| 4325 num_used++; | |
| 4326 /* total_size += n->implementation->size_in_bytes (h);*/ | |
| 440 | 4327 /* #### May modify header->next on a C_READONLY lcrecord */ |
| 428 | 4328 prev = &(header->next); |
| 4329 header = *prev; | |
| 4330 tick_lcrecord_stats (h, 0); | |
| 4331 } | |
| 4332 else | |
| 4333 { | |
| 4334 struct lcrecord_header *next = header->next; | |
| 4335 *prev = next; | |
| 4336 tick_lcrecord_stats (h, 1); | |
| 4337 /* used to call finalizer right here. */ | |
| 1726 | 4338 xfree (header, struct lcrecord_header *); |
| 428 | 4339 header = next; |
| 4340 } | |
| 4341 } | |
| 4342 *used = num_used; | |
| 4343 /* *total = total_size; */ | |
| 4344 } | |
| 4345 | |
| 4346 /* And the Lord said: Thou shalt use the `c-backslash-region' command | |
| 4347 to make macros prettier. */ | |
| 4348 | |
| 4349 #ifdef ERROR_CHECK_GC | |
| 4350 | |
| 771 | 4351 #define SWEEP_FIXED_TYPE_BLOCK_1(typename, obj_type, lheader) \ |
| 428 | 4352 do { \ |
| 4353 struct typename##_block *SFTB_current; \ | |
| 4354 int SFTB_limit; \ | |
| 4355 int num_free = 0, num_used = 0; \ | |
| 4356 \ | |
| 444 | 4357 for (SFTB_current = current_##typename##_block, \ |
| 428 | 4358 SFTB_limit = current_##typename##_block_index; \ |
| 4359 SFTB_current; \ | |
| 4360 ) \ | |
| 4361 { \ | |
| 4362 int SFTB_iii; \ | |
| 4363 \ | |
| 4364 for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++) \ | |
| 4365 { \ | |
| 4366 obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]); \ | |
| 4367 \ | |
| 454 | 4368 if (LRECORD_FREE_P (SFTB_victim)) \ |
| 428 | 4369 { \ |
| 4370 num_free++; \ | |
| 4371 } \ | |
| 4372 else if (C_READONLY_RECORD_HEADER_P (&SFTB_victim->lheader)) \ | |
| 4373 { \ | |
| 4374 num_used++; \ | |
| 4375 } \ | |
| 442 | 4376 else if (! MARKED_RECORD_HEADER_P (&SFTB_victim->lheader)) \ |
| 428 | 4377 { \ |
| 4378 num_free++; \ | |
| 4379 FREE_FIXED_TYPE (typename, obj_type, SFTB_victim); \ | |
| 4380 } \ | |
| 4381 else \ | |
| 4382 { \ | |
| 4383 num_used++; \ | |
| 4384 UNMARK_##typename (SFTB_victim); \ | |
| 4385 } \ | |
| 4386 } \ | |
| 4387 SFTB_current = SFTB_current->prev; \ | |
| 4388 SFTB_limit = countof (current_##typename##_block->block); \ | |
| 4389 } \ | |
| 4390 \ | |
| 4391 gc_count_num_##typename##_in_use = num_used; \ | |
| 4392 gc_count_num_##typename##_freelist = num_free; \ | |
| 4393 } while (0) | |
| 4394 | |
| 4395 #else /* !ERROR_CHECK_GC */ | |
| 4396 | |
| 771 | 4397 #define SWEEP_FIXED_TYPE_BLOCK_1(typename, obj_type, lheader) \ |
| 4398 do { \ | |
| 4399 struct typename##_block *SFTB_current; \ | |
| 4400 struct typename##_block **SFTB_prev; \ | |
| 4401 int SFTB_limit; \ | |
| 4402 int num_free = 0, num_used = 0; \ | |
| 4403 \ | |
| 4404 typename##_free_list = 0; \ | |
| 4405 \ | |
| 4406 for (SFTB_prev = ¤t_##typename##_block, \ | |
| 4407 SFTB_current = current_##typename##_block, \ | |
| 4408 SFTB_limit = current_##typename##_block_index; \ | |
| 4409 SFTB_current; \ | |
| 4410 ) \ | |
| 4411 { \ | |
| 4412 int SFTB_iii; \ | |
| 4413 int SFTB_empty = 1; \ | |
| 4414 Lisp_Free *SFTB_old_free_list = typename##_free_list; \ | |
| 4415 \ | |
| 4416 for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++) \ | |
| 4417 { \ | |
| 4418 obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]); \ | |
| 4419 \ | |
| 4420 if (LRECORD_FREE_P (SFTB_victim)) \ | |
| 4421 { \ | |
| 4422 num_free++; \ | |
| 4423 PUT_FIXED_TYPE_ON_FREE_LIST (typename, obj_type, SFTB_victim); \ | |
| 4424 } \ | |
| 4425 else if (C_READONLY_RECORD_HEADER_P (&SFTB_victim->lheader)) \ | |
| 4426 { \ | |
| 4427 SFTB_empty = 0; \ | |
| 4428 num_used++; \ | |
| 4429 } \ | |
| 4430 else if (! MARKED_RECORD_HEADER_P (&SFTB_victim->lheader)) \ | |
| 4431 { \ | |
| 4432 num_free++; \ | |
| 4433 FREE_FIXED_TYPE (typename, obj_type, SFTB_victim); \ | |
| 4434 } \ | |
| 4435 else \ | |
| 4436 { \ | |
| 4437 SFTB_empty = 0; \ | |
| 4438 num_used++; \ | |
| 4439 UNMARK_##typename (SFTB_victim); \ | |
| 4440 } \ | |
| 4441 } \ | |
| 4442 if (!SFTB_empty) \ | |
| 4443 { \ | |
| 4444 SFTB_prev = &(SFTB_current->prev); \ | |
| 4445 SFTB_current = SFTB_current->prev; \ | |
| 4446 } \ | |
| 4447 else if (SFTB_current == current_##typename##_block \ | |
| 4448 && !SFTB_current->prev) \ | |
| 4449 { \ | |
| 4450 /* No real point in freeing sole allocation block */ \ | |
| 4451 break; \ | |
| 4452 } \ | |
| 4453 else \ | |
| 4454 { \ | |
| 4455 struct typename##_block *SFTB_victim_block = SFTB_current; \ | |
| 4456 if (SFTB_victim_block == current_##typename##_block) \ | |
| 4457 current_##typename##_block_index \ | |
| 4458 = countof (current_##typename##_block->block); \ | |
| 4459 SFTB_current = SFTB_current->prev; \ | |
| 4460 { \ | |
| 4461 *SFTB_prev = SFTB_current; \ | |
| 1726 | 4462 xfree (SFTB_victim_block, struct typename##_block *); \ |
| 771 | 4463 /* Restore free list to what it was before victim was swept */ \ |
| 4464 typename##_free_list = SFTB_old_free_list; \ | |
| 4465 num_free -= SFTB_limit; \ | |
| 4466 } \ | |
| 4467 } \ | |
| 4468 SFTB_limit = countof (current_##typename##_block->block); \ | |
| 4469 } \ | |
| 4470 \ | |
| 4471 gc_count_num_##typename##_in_use = num_used; \ | |
| 4472 gc_count_num_##typename##_freelist = num_free; \ | |
| 428 | 4473 } while (0) |
| 4474 | |
| 4475 #endif /* !ERROR_CHECK_GC */ | |
| 4476 | |
| 771 | 4477 #define SWEEP_FIXED_TYPE_BLOCK(typename, obj_type) \ |
| 4478 SWEEP_FIXED_TYPE_BLOCK_1 (typename, obj_type, lheader) | |
| 4479 | |
| 2720 | 4480 #endif /* not MC_ALLOC */ |
| 4481 | |
| 428 | 4482 |
| 2720 | 4483 #ifndef MC_ALLOC |
| 428 | 4484 static void |
| 4485 sweep_conses (void) | |
| 4486 { | |
| 4487 #define UNMARK_cons(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4488 #define ADDITIONAL_FREE_cons(ptr) | |
| 4489 | |
| 440 | 4490 SWEEP_FIXED_TYPE_BLOCK (cons, Lisp_Cons); |
| 428 | 4491 } |
| 2720 | 4492 #endif /* not MC_ALLOC */ |
| 428 | 4493 |
| 4494 /* Explicitly free a cons cell. */ | |
| 4495 void | |
| 853 | 4496 free_cons (Lisp_Object cons) |
| 428 | 4497 { |
| 2720 | 4498 #ifndef MC_ALLOC /* to avoid compiler warning */ |
| 853 | 4499 Lisp_Cons *ptr = XCONS (cons); |
| 2720 | 4500 #endif /* MC_ALLOC */ |
| 853 | 4501 |
| 428 | 4502 #ifdef ERROR_CHECK_GC |
| 2720 | 4503 #ifdef MC_ALLOC |
| 4504 Lisp_Cons *ptr = XCONS (cons); | |
| 4505 #endif /* MC_ALLOC */ | |
| 428 | 4506 /* If the CAR is not an int, then it will be a pointer, which will |
| 4507 always be four-byte aligned. If this cons cell has already been | |
| 4508 placed on the free list, however, its car will probably contain | |
| 4509 a chain pointer to the next cons on the list, which has cleverly | |
| 4510 had all its 0's and 1's inverted. This allows for a quick | |
| 1204 | 4511 check to make sure we're not freeing something already freed. |
| 4512 | |
| 4513 NOTE: This check may not be necessary. Freeing an object sets its | |
| 4514 type to lrecord_type_free, which will trip up the XCONS() above -- as | |
| 4515 well as a check in FREE_FIXED_TYPE(). */ | |
| 853 | 4516 if (POINTER_TYPE_P (XTYPE (cons_car (ptr)))) |
| 4517 ASSERT_VALID_POINTER (XPNTR (cons_car (ptr))); | |
| 428 | 4518 #endif /* ERROR_CHECK_GC */ |
| 4519 | |
| 2720 | 4520 #ifdef MC_ALLOC |
| 4521 free_lrecord (cons); | |
| 4522 #else /* not MC_ALLOC */ | |
| 440 | 4523 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (cons, Lisp_Cons, ptr); |
| 2720 | 4524 #endif /* not MC_ALLOC */ |
| 428 | 4525 } |
| 4526 | |
| 4527 /* explicitly free a list. You **must make sure** that you have | |
| 4528 created all the cons cells that make up this list and that there | |
| 4529 are no pointers to any of these cons cells anywhere else. If there | |
| 4530 are, you will lose. */ | |
| 4531 | |
| 4532 void | |
| 4533 free_list (Lisp_Object list) | |
| 4534 { | |
| 4535 Lisp_Object rest, next; | |
| 4536 | |
| 4537 for (rest = list; !NILP (rest); rest = next) | |
| 4538 { | |
| 4539 next = XCDR (rest); | |
| 853 | 4540 free_cons (rest); |
| 428 | 4541 } |
| 4542 } | |
| 4543 | |
| 4544 /* explicitly free an alist. You **must make sure** that you have | |
| 4545 created all the cons cells that make up this alist and that there | |
| 4546 are no pointers to any of these cons cells anywhere else. If there | |
| 4547 are, you will lose. */ | |
| 4548 | |
| 4549 void | |
| 4550 free_alist (Lisp_Object alist) | |
| 4551 { | |
| 4552 Lisp_Object rest, next; | |
| 4553 | |
| 4554 for (rest = alist; !NILP (rest); rest = next) | |
| 4555 { | |
| 4556 next = XCDR (rest); | |
| 853 | 4557 free_cons (XCAR (rest)); |
| 4558 free_cons (rest); | |
| 428 | 4559 } |
| 4560 } | |
| 4561 | |
| 2720 | 4562 #ifndef MC_ALLOC |
| 428 | 4563 static void |
| 4564 sweep_compiled_functions (void) | |
| 4565 { | |
| 4566 #define UNMARK_compiled_function(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 945 | 4567 #define ADDITIONAL_FREE_compiled_function(ptr) \ |
| 1726 | 4568 if (ptr->args_in_array) xfree (ptr->args, Lisp_Object *) |
| 428 | 4569 |
| 4570 SWEEP_FIXED_TYPE_BLOCK (compiled_function, Lisp_Compiled_Function); | |
| 4571 } | |
| 4572 | |
| 4573 static void | |
| 4574 sweep_floats (void) | |
| 4575 { | |
| 4576 #define UNMARK_float(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4577 #define ADDITIONAL_FREE_float(ptr) | |
| 4578 | |
| 440 | 4579 SWEEP_FIXED_TYPE_BLOCK (float, Lisp_Float); |
| 428 | 4580 } |
| 4581 | |
| 1983 | 4582 #ifdef HAVE_BIGNUM |
| 4583 static void | |
| 4584 sweep_bignums (void) | |
| 4585 { | |
| 4586 #define UNMARK_bignum(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4587 #define ADDITIONAL_FREE_bignum(ptr) bignum_fini (ptr->data) | |
| 4588 | |
| 4589 SWEEP_FIXED_TYPE_BLOCK (bignum, Lisp_Bignum); | |
| 4590 } | |
| 4591 #endif /* HAVE_BIGNUM */ | |
| 4592 | |
| 4593 #ifdef HAVE_RATIO | |
| 4594 static void | |
| 4595 sweep_ratios (void) | |
| 4596 { | |
| 4597 #define UNMARK_ratio(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4598 #define ADDITIONAL_FREE_ratio(ptr) ratio_fini (ptr->data) | |
| 4599 | |
| 4600 SWEEP_FIXED_TYPE_BLOCK (ratio, Lisp_Ratio); | |
| 4601 } | |
| 4602 #endif /* HAVE_RATIO */ | |
| 4603 | |
| 4604 #ifdef HAVE_BIGFLOAT | |
| 4605 static void | |
| 4606 sweep_bigfloats (void) | |
| 4607 { | |
| 4608 #define UNMARK_bigfloat(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4609 #define ADDITIONAL_FREE_bigfloat(ptr) bigfloat_fini (ptr->bf) | |
| 4610 | |
| 4611 SWEEP_FIXED_TYPE_BLOCK (bigfloat, Lisp_Bigfloat); | |
| 4612 } | |
| 4613 #endif | |
| 4614 | |
| 428 | 4615 static void |
| 4616 sweep_symbols (void) | |
| 4617 { | |
| 4618 #define UNMARK_symbol(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4619 #define ADDITIONAL_FREE_symbol(ptr) | |
| 4620 | |
| 440 | 4621 SWEEP_FIXED_TYPE_BLOCK (symbol, Lisp_Symbol); |
| 428 | 4622 } |
| 4623 | |
| 4624 static void | |
| 4625 sweep_extents (void) | |
| 4626 { | |
| 4627 #define UNMARK_extent(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4628 #define ADDITIONAL_FREE_extent(ptr) | |
| 4629 | |
| 4630 SWEEP_FIXED_TYPE_BLOCK (extent, struct extent); | |
| 4631 } | |
| 4632 | |
| 4633 static void | |
| 4634 sweep_events (void) | |
| 4635 { | |
| 4636 #define UNMARK_event(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4637 #define ADDITIONAL_FREE_event(ptr) | |
| 4638 | |
| 440 | 4639 SWEEP_FIXED_TYPE_BLOCK (event, Lisp_Event); |
| 428 | 4640 } |
| 2720 | 4641 #endif /* not MC_ALLOC */ |
| 428 | 4642 |
| 1204 | 4643 #ifdef EVENT_DATA_AS_OBJECTS |
| 934 | 4644 |
| 2720 | 4645 #ifndef MC_ALLOC |
| 934 | 4646 static void |
| 4647 sweep_key_data (void) | |
| 4648 { | |
| 4649 #define UNMARK_key_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4650 #define ADDITIONAL_FREE_key_data(ptr) | |
| 4651 | |
| 4652 SWEEP_FIXED_TYPE_BLOCK (key_data, Lisp_Key_Data); | |
| 4653 } | |
| 2720 | 4654 #endif /* not MC_ALLOC */ |
| 934 | 4655 |
| 1204 | 4656 void |
| 4657 free_key_data (Lisp_Object ptr) | |
| 4658 { | |
| 2720 | 4659 #ifdef MC_ALLOC |
| 4660 free_lrecord (ptr); | |
| 4661 #else /* not MC_ALLOC */ | |
| 1204 | 4662 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (key_data, Lisp_Key_Data, XKEY_DATA (ptr)); |
| 2720 | 4663 #endif /* not MC_ALLOC */ |
| 4664 } | |
| 4665 | |
| 4666 #ifndef MC_ALLOC | |
| 934 | 4667 static void |
| 4668 sweep_button_data (void) | |
| 4669 { | |
| 4670 #define UNMARK_button_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4671 #define ADDITIONAL_FREE_button_data(ptr) | |
| 4672 | |
| 4673 SWEEP_FIXED_TYPE_BLOCK (button_data, Lisp_Button_Data); | |
| 4674 } | |
| 2720 | 4675 #endif /* not MC_ALLOC */ |
| 934 | 4676 |
| 1204 | 4677 void |
| 4678 free_button_data (Lisp_Object ptr) | |
| 4679 { | |
| 2720 | 4680 #ifdef MC_ALLOC |
| 4681 free_lrecord (ptr); | |
| 4682 #else /* not MC_ALLOC */ | |
| 1204 | 4683 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (button_data, Lisp_Button_Data, XBUTTON_DATA (ptr)); |
| 2720 | 4684 #endif /* not MC_ALLOC */ |
| 4685 } | |
| 4686 | |
| 4687 #ifndef MC_ALLOC | |
| 934 | 4688 static void |
| 4689 sweep_motion_data (void) | |
| 4690 { | |
| 4691 #define UNMARK_motion_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4692 #define ADDITIONAL_FREE_motion_data(ptr) | |
| 4693 | |
| 4694 SWEEP_FIXED_TYPE_BLOCK (motion_data, Lisp_Motion_Data); | |
| 4695 } | |
| 2720 | 4696 #endif /* not MC_ALLOC */ |
| 934 | 4697 |
| 1204 | 4698 void |
| 4699 free_motion_data (Lisp_Object ptr) | |
| 4700 { | |
| 2720 | 4701 #ifdef MC_ALLOC |
| 4702 free_lrecord (ptr); | |
| 4703 #else /* not MC_ALLOC */ | |
| 1204 | 4704 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (motion_data, Lisp_Motion_Data, XMOTION_DATA (ptr)); |
| 2720 | 4705 #endif /* not MC_ALLOC */ |
| 4706 } | |
| 4707 | |
| 4708 #ifndef MC_ALLOC | |
| 934 | 4709 static void |
| 4710 sweep_process_data (void) | |
| 4711 { | |
| 4712 #define UNMARK_process_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4713 #define ADDITIONAL_FREE_process_data(ptr) | |
| 4714 | |
| 4715 SWEEP_FIXED_TYPE_BLOCK (process_data, Lisp_Process_Data); | |
| 4716 } | |
| 2720 | 4717 #endif /* not MC_ALLOC */ |
| 934 | 4718 |
| 1204 | 4719 void |
| 4720 free_process_data (Lisp_Object ptr) | |
| 4721 { | |
| 2720 | 4722 #ifdef MC_ALLOC |
| 4723 free_lrecord (ptr); | |
| 4724 #else /* not MC_ALLOC */ | |
| 1204 | 4725 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (process_data, Lisp_Process_Data, XPROCESS_DATA (ptr)); |
| 2720 | 4726 #endif /* not MC_ALLOC */ |
| 4727 } | |
| 4728 | |
| 4729 #ifndef MC_ALLOC | |
| 934 | 4730 static void |
| 4731 sweep_timeout_data (void) | |
| 4732 { | |
| 4733 #define UNMARK_timeout_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4734 #define ADDITIONAL_FREE_timeout_data(ptr) | |
| 4735 | |
| 4736 SWEEP_FIXED_TYPE_BLOCK (timeout_data, Lisp_Timeout_Data); | |
| 4737 } | |
| 2720 | 4738 #endif /* not MC_ALLOC */ |
| 934 | 4739 |
| 1204 | 4740 void |
| 4741 free_timeout_data (Lisp_Object ptr) | |
| 4742 { | |
| 2720 | 4743 #ifdef MC_ALLOC |
| 4744 free_lrecord (ptr); | |
| 4745 #else /* not MC_ALLOC */ | |
| 1204 | 4746 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (timeout_data, Lisp_Timeout_Data, XTIMEOUT_DATA (ptr)); |
| 2720 | 4747 #endif /* not MC_ALLOC */ |
| 4748 } | |
| 4749 | |
| 4750 #ifndef MC_ALLOC | |
| 934 | 4751 static void |
| 4752 sweep_magic_data (void) | |
| 4753 { | |
| 4754 #define UNMARK_magic_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4755 #define ADDITIONAL_FREE_magic_data(ptr) | |
| 4756 | |
| 4757 SWEEP_FIXED_TYPE_BLOCK (magic_data, Lisp_Magic_Data); | |
| 4758 } | |
| 2720 | 4759 #endif /* not MC_ALLOC */ |
| 934 | 4760 |
| 1204 | 4761 void |
| 4762 free_magic_data (Lisp_Object ptr) | |
| 4763 { | |
| 2720 | 4764 #ifdef MC_ALLOC |
| 4765 free_lrecord (ptr); | |
| 4766 #else /* not MC_ALLOC */ | |
| 1204 | 4767 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (magic_data, Lisp_Magic_Data, XMAGIC_DATA (ptr)); |
| 2720 | 4768 #endif /* not MC_ALLOC */ |
| 4769 } | |
| 4770 | |
| 4771 #ifndef MC_ALLOC | |
| 934 | 4772 static void |
| 4773 sweep_magic_eval_data (void) | |
| 4774 { | |
| 4775 #define UNMARK_magic_eval_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4776 #define ADDITIONAL_FREE_magic_eval_data(ptr) | |
| 4777 | |
| 4778 SWEEP_FIXED_TYPE_BLOCK (magic_eval_data, Lisp_Magic_Eval_Data); | |
| 4779 } | |
| 2720 | 4780 #endif /* not MC_ALLOC */ |
| 934 | 4781 |
| 1204 | 4782 void |
| 4783 free_magic_eval_data (Lisp_Object ptr) | |
| 4784 { | |
| 2720 | 4785 #ifdef MC_ALLOC |
| 4786 free_lrecord (ptr); | |
| 4787 #else /* not MC_ALLOC */ | |
| 1204 | 4788 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (magic_eval_data, Lisp_Magic_Eval_Data, XMAGIC_EVAL_DATA (ptr)); |
| 2720 | 4789 #endif /* not MC_ALLOC */ |
| 4790 } | |
| 4791 | |
| 4792 #ifndef MC_ALLOC | |
| 934 | 4793 static void |
| 4794 sweep_eval_data (void) | |
| 4795 { | |
| 4796 #define UNMARK_eval_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4797 #define ADDITIONAL_FREE_eval_data(ptr) | |
| 4798 | |
| 4799 SWEEP_FIXED_TYPE_BLOCK (eval_data, Lisp_Eval_Data); | |
| 4800 } | |
| 2720 | 4801 #endif /* not MC_ALLOC */ |
| 934 | 4802 |
| 1204 | 4803 void |
| 4804 free_eval_data (Lisp_Object ptr) | |
| 4805 { | |
| 2720 | 4806 #ifdef MC_ALLOC |
| 4807 free_lrecord (ptr); | |
| 4808 #else /* not MC_ALLOC */ | |
| 1204 | 4809 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (eval_data, Lisp_Eval_Data, XEVAL_DATA (ptr)); |
| 2720 | 4810 #endif /* not MC_ALLOC */ |
| 4811 } | |
| 4812 | |
| 4813 #ifndef MC_ALLOC | |
| 934 | 4814 static void |
| 4815 sweep_misc_user_data (void) | |
| 4816 { | |
| 4817 #define UNMARK_misc_user_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4818 #define ADDITIONAL_FREE_misc_user_data(ptr) | |
| 4819 | |
| 4820 SWEEP_FIXED_TYPE_BLOCK (misc_user_data, Lisp_Misc_User_Data); | |
| 4821 } | |
| 2720 | 4822 #endif /* not MC_ALLOC */ |
| 934 | 4823 |
| 1204 | 4824 void |
| 4825 free_misc_user_data (Lisp_Object ptr) | |
| 4826 { | |
| 2720 | 4827 #ifdef MC_ALLOC |
| 4828 free_lrecord (ptr); | |
| 4829 #else /* not MC_ALLOC */ | |
| 1204 | 4830 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (misc_user_data, Lisp_Misc_User_Data, XMISC_USER_DATA (ptr)); |
| 2720 | 4831 #endif /* not MC_ALLOC */ |
| 1204 | 4832 } |
| 4833 | |
| 4834 #endif /* EVENT_DATA_AS_OBJECTS */ | |
| 934 | 4835 |
| 2720 | 4836 #ifndef MC_ALLOC |
| 428 | 4837 static void |
| 4838 sweep_markers (void) | |
| 4839 { | |
| 4840 #define UNMARK_marker(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4841 #define ADDITIONAL_FREE_marker(ptr) \ | |
| 4842 do { Lisp_Object tem; \ | |
| 793 | 4843 tem = wrap_marker (ptr); \ |
| 428 | 4844 unchain_marker (tem); \ |
| 4845 } while (0) | |
| 4846 | |
| 440 | 4847 SWEEP_FIXED_TYPE_BLOCK (marker, Lisp_Marker); |
| 428 | 4848 } |
| 2720 | 4849 #endif /* not MC_ALLOC */ |
| 428 | 4850 |
| 4851 /* Explicitly free a marker. */ | |
| 4852 void | |
| 1204 | 4853 free_marker (Lisp_Object ptr) |
| 428 | 4854 { |
| 2720 | 4855 #ifdef MC_ALLOC |
| 4856 free_lrecord (ptr); | |
| 4857 #else /* not MC_ALLOC */ | |
| 1204 | 4858 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (marker, Lisp_Marker, XMARKER (ptr)); |
| 2720 | 4859 #endif /* not MC_ALLOC */ |
| 428 | 4860 } |
| 4861 | |
| 4862 | |
| 4863 #if defined (MULE) && defined (VERIFY_STRING_CHARS_INTEGRITY) | |
| 4864 | |
| 4865 static void | |
| 4866 verify_string_chars_integrity (void) | |
| 4867 { | |
| 4868 struct string_chars_block *sb; | |
| 4869 | |
| 4870 /* Scan each existing string block sequentially, string by string. */ | |
| 4871 for (sb = first_string_chars_block; sb; sb = sb->next) | |
| 4872 { | |
| 4873 int pos = 0; | |
| 4874 /* POS is the index of the next string in the block. */ | |
| 4875 while (pos < sb->pos) | |
| 4876 { | |
| 4877 struct string_chars *s_chars = | |
| 4878 (struct string_chars *) &(sb->string_chars[pos]); | |
| 438 | 4879 Lisp_String *string; |
| 428 | 4880 int size; |
| 4881 int fullsize; | |
| 4882 | |
| 454 | 4883 /* If the string_chars struct is marked as free (i.e. the |
| 4884 STRING pointer is NULL) then this is an unused chunk of | |
| 4885 string storage. (See below.) */ | |
| 4886 | |
| 4887 if (STRING_CHARS_FREE_P (s_chars)) | |
| 428 | 4888 { |
| 4889 fullsize = ((struct unused_string_chars *) s_chars)->fullsize; | |
| 4890 pos += fullsize; | |
| 4891 continue; | |
| 4892 } | |
| 4893 | |
| 4894 string = s_chars->string; | |
| 4895 /* Must be 32-bit aligned. */ | |
| 4896 assert ((((int) string) & 3) == 0); | |
| 4897 | |
| 793 | 4898 size = string->size_; |
| 428 | 4899 fullsize = STRING_FULLSIZE (size); |
| 4900 | |
| 4901 assert (!BIG_STRING_FULLSIZE_P (fullsize)); | |
| 2720 | 4902 assert (XSTRING_DATA (string) == s_chars->chars); |
| 428 | 4903 pos += fullsize; |
| 4904 } | |
| 4905 assert (pos == sb->pos); | |
| 4906 } | |
| 4907 } | |
| 4908 | |
| 1204 | 4909 #endif /* defined (MULE) && defined (VERIFY_STRING_CHARS_INTEGRITY) */ |
| 428 | 4910 |
| 4911 /* Compactify string chars, relocating the reference to each -- | |
| 4912 free any empty string_chars_block we see. */ | |
| 4913 static void | |
| 4914 compact_string_chars (void) | |
| 4915 { | |
| 4916 struct string_chars_block *to_sb = first_string_chars_block; | |
| 4917 int to_pos = 0; | |
| 4918 struct string_chars_block *from_sb; | |
| 4919 | |
| 4920 /* Scan each existing string block sequentially, string by string. */ | |
| 4921 for (from_sb = first_string_chars_block; from_sb; from_sb = from_sb->next) | |
| 4922 { | |
| 4923 int from_pos = 0; | |
| 4924 /* FROM_POS is the index of the next string in the block. */ | |
| 4925 while (from_pos < from_sb->pos) | |
| 4926 { | |
| 4927 struct string_chars *from_s_chars = | |
| 4928 (struct string_chars *) &(from_sb->string_chars[from_pos]); | |
| 4929 struct string_chars *to_s_chars; | |
| 438 | 4930 Lisp_String *string; |
| 428 | 4931 int size; |
| 4932 int fullsize; | |
| 4933 | |
| 454 | 4934 /* If the string_chars struct is marked as free (i.e. the |
| 4935 STRING pointer is NULL) then this is an unused chunk of | |
| 4936 string storage. This happens under Mule when a string's | |
| 4937 size changes in such a way that its fullsize changes. | |
| 4938 (Strings can change size because a different-length | |
| 4939 character can be substituted for another character.) | |
| 4940 In this case, after the bogus string pointer is the | |
| 4941 "fullsize" of this entry, i.e. how many bytes to skip. */ | |
| 4942 | |
| 4943 if (STRING_CHARS_FREE_P (from_s_chars)) | |
| 428 | 4944 { |
| 4945 fullsize = ((struct unused_string_chars *) from_s_chars)->fullsize; | |
| 4946 from_pos += fullsize; | |
| 4947 continue; | |
| 4948 } | |
| 4949 | |
| 4950 string = from_s_chars->string; | |
| 1204 | 4951 gc_checking_assert (!(LRECORD_FREE_P (string))); |
| 428 | 4952 |
| 793 | 4953 size = string->size_; |
| 428 | 4954 fullsize = STRING_FULLSIZE (size); |
| 4955 | |
| 442 | 4956 gc_checking_assert (! BIG_STRING_FULLSIZE_P (fullsize)); |
| 428 | 4957 |
| 4958 /* Just skip it if it isn't marked. */ | |
| 771 | 4959 if (! MARKED_RECORD_HEADER_P (&(string->u.lheader))) |
| 428 | 4960 { |
| 4961 from_pos += fullsize; | |
| 4962 continue; | |
| 4963 } | |
| 4964 | |
| 4965 /* If it won't fit in what's left of TO_SB, close TO_SB out | |
| 4966 and go on to the next string_chars_block. We know that TO_SB | |
| 4967 cannot advance past FROM_SB here since FROM_SB is large enough | |
| 4968 to currently contain this string. */ | |
| 4969 if ((to_pos + fullsize) > countof (to_sb->string_chars)) | |
| 4970 { | |
| 4971 to_sb->pos = to_pos; | |
| 4972 to_sb = to_sb->next; | |
| 4973 to_pos = 0; | |
| 4974 } | |
| 4975 | |
| 4976 /* Compute new address of this string | |
| 4977 and update TO_POS for the space being used. */ | |
| 4978 to_s_chars = (struct string_chars *) &(to_sb->string_chars[to_pos]); | |
| 4979 | |
| 4980 /* Copy the string_chars to the new place. */ | |
| 4981 if (from_s_chars != to_s_chars) | |
| 4982 memmove (to_s_chars, from_s_chars, fullsize); | |
| 4983 | |
| 4984 /* Relocate FROM_S_CHARS's reference */ | |
| 826 | 4985 set_lispstringp_data (string, &(to_s_chars->chars[0])); |
| 428 | 4986 |
| 4987 from_pos += fullsize; | |
| 4988 to_pos += fullsize; | |
| 4989 } | |
| 4990 } | |
| 4991 | |
| 4992 /* Set current to the last string chars block still used and | |
| 4993 free any that follow. */ | |
| 4994 { | |
| 4995 struct string_chars_block *victim; | |
| 4996 | |
| 4997 for (victim = to_sb->next; victim; ) | |
| 4998 { | |
| 4999 struct string_chars_block *next = victim->next; | |
| 1726 | 5000 xfree (victim, struct string_chars_block *); |
| 428 | 5001 victim = next; |
| 5002 } | |
| 5003 | |
| 5004 current_string_chars_block = to_sb; | |
| 5005 current_string_chars_block->pos = to_pos; | |
| 5006 current_string_chars_block->next = 0; | |
| 5007 } | |
| 5008 } | |
| 5009 | |
| 2720 | 5010 #ifndef MC_ALLOC |
| 428 | 5011 #if 1 /* Hack to debug missing purecopy's */ |
| 5012 static int debug_string_purity; | |
| 5013 | |
| 5014 static void | |
| 793 | 5015 debug_string_purity_print (Lisp_Object p) |
| 428 | 5016 { |
| 5017 Charcount i; | |
| 826 | 5018 Charcount s = string_char_length (p); |
| 442 | 5019 stderr_out ("\""); |
| 428 | 5020 for (i = 0; i < s; i++) |
| 5021 { | |
| 867 | 5022 Ichar ch = string_ichar (p, i); |
| 428 | 5023 if (ch < 32 || ch >= 126) |
| 5024 stderr_out ("\\%03o", ch); | |
| 5025 else if (ch == '\\' || ch == '\"') | |
| 5026 stderr_out ("\\%c", ch); | |
| 5027 else | |
| 5028 stderr_out ("%c", ch); | |
| 5029 } | |
| 5030 stderr_out ("\"\n"); | |
| 5031 } | |
| 5032 #endif /* 1 */ | |
| 2720 | 5033 #endif /* not MC_ALLOC */ |
| 5034 | |
| 5035 #ifndef MC_ALLOC | |
| 428 | 5036 static void |
| 5037 sweep_strings (void) | |
| 5038 { | |
| 647 | 5039 int num_small_used = 0; |
| 5040 Bytecount num_small_bytes = 0, num_bytes = 0; | |
| 428 | 5041 int debug = debug_string_purity; |
| 5042 | |
| 793 | 5043 #define UNMARK_string(ptr) do { \ |
| 5044 Lisp_String *p = (ptr); \ | |
| 5045 Bytecount size = p->size_; \ | |
| 5046 UNMARK_RECORD_HEADER (&(p->u.lheader)); \ | |
| 5047 num_bytes += size; \ | |
| 5048 if (!BIG_STRING_SIZE_P (size)) \ | |
| 5049 { \ | |
| 5050 num_small_bytes += size; \ | |
| 5051 num_small_used++; \ | |
| 5052 } \ | |
| 5053 if (debug) \ | |
| 5054 debug_string_purity_print (wrap_string (p)); \ | |
| 438 | 5055 } while (0) |
| 5056 #define ADDITIONAL_FREE_string(ptr) do { \ | |
| 793 | 5057 Bytecount size = ptr->size_; \ |
| 438 | 5058 if (BIG_STRING_SIZE_P (size)) \ |
| 1726 | 5059 xfree (ptr->data_, Ibyte *); \ |
| 438 | 5060 } while (0) |
| 5061 | |
| 771 | 5062 SWEEP_FIXED_TYPE_BLOCK_1 (string, Lisp_String, u.lheader); |
| 428 | 5063 |
| 5064 gc_count_num_short_string_in_use = num_small_used; | |
| 5065 gc_count_string_total_size = num_bytes; | |
| 5066 gc_count_short_string_total_size = num_small_bytes; | |
| 5067 } | |
| 2720 | 5068 #endif /* not MC_ALLOC */ |
| 428 | 5069 |
| 5070 /* I hate duplicating all this crap! */ | |
| 5071 int | |
| 5072 marked_p (Lisp_Object obj) | |
| 5073 { | |
| 5074 /* Checks we used to perform. */ | |
| 5075 /* if (EQ (obj, Qnull_pointer)) return 1; */ | |
| 5076 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return 1; */ | |
| 5077 /* if (PURIFIED (XPNTR (obj))) return 1; */ | |
| 5078 | |
| 5079 if (XTYPE (obj) == Lisp_Type_Record) | |
| 5080 { | |
| 5081 struct lrecord_header *lheader = XRECORD_LHEADER (obj); | |
| 442 | 5082 |
| 5083 GC_CHECK_LHEADER_INVARIANTS (lheader); | |
| 5084 | |
| 5085 return MARKED_RECORD_HEADER_P (lheader); | |
| 428 | 5086 } |
| 5087 return 1; | |
| 5088 } | |
| 5089 | |
| 5090 static void | |
| 5091 gc_sweep (void) | |
| 5092 { | |
| 2720 | 5093 #ifdef MC_ALLOC |
| 5094 compact_string_chars (); | |
| 5095 mc_finalize (); | |
| 5096 mc_sweep (); | |
| 5097 #else /* not MC_ALLOC */ | |
| 428 | 5098 /* Free all unmarked records. Do this at the very beginning, |
| 5099 before anything else, so that the finalize methods can safely | |
| 5100 examine items in the objects. sweep_lcrecords_1() makes | |
| 5101 sure to call all the finalize methods *before* freeing anything, | |
| 5102 to complete the safety. */ | |
| 5103 { | |
| 5104 int ignored; | |
| 5105 sweep_lcrecords_1 (&all_lcrecords, &ignored); | |
| 5106 } | |
| 5107 | |
| 5108 compact_string_chars (); | |
| 5109 | |
| 5110 /* Finalize methods below (called through the ADDITIONAL_FREE_foo | |
| 5111 macros) must be *extremely* careful to make sure they're not | |
| 5112 referencing freed objects. The only two existing finalize | |
| 5113 methods (for strings and markers) pass muster -- the string | |
| 5114 finalizer doesn't look at anything but its own specially- | |
| 5115 created block, and the marker finalizer only looks at live | |
| 5116 buffers (which will never be freed) and at the markers before | |
| 5117 and after it in the chain (which, by induction, will never be | |
| 5118 freed because if so, they would have already removed themselves | |
| 5119 from the chain). */ | |
| 5120 | |
| 5121 /* Put all unmarked strings on free list, free'ing the string chars | |
| 5122 of large unmarked strings */ | |
| 5123 sweep_strings (); | |
| 5124 | |
| 5125 /* Put all unmarked conses on free list */ | |
| 5126 sweep_conses (); | |
| 5127 | |
| 5128 /* Free all unmarked compiled-function objects */ | |
| 5129 sweep_compiled_functions (); | |
| 5130 | |
| 5131 /* Put all unmarked floats on free list */ | |
| 5132 sweep_floats (); | |
| 5133 | |
| 1983 | 5134 #ifdef HAVE_BIGNUM |
| 5135 /* Put all unmarked bignums on free list */ | |
| 5136 sweep_bignums (); | |
| 5137 #endif | |
| 5138 | |
| 5139 #ifdef HAVE_RATIO | |
| 5140 /* Put all unmarked ratios on free list */ | |
| 5141 sweep_ratios (); | |
| 5142 #endif | |
| 5143 | |
| 5144 #ifdef HAVE_BIGFLOAT | |
| 5145 /* Put all unmarked bigfloats on free list */ | |
| 5146 sweep_bigfloats (); | |
| 5147 #endif | |
| 5148 | |
| 428 | 5149 /* Put all unmarked symbols on free list */ |
| 5150 sweep_symbols (); | |
| 5151 | |
| 5152 /* Put all unmarked extents on free list */ | |
| 5153 sweep_extents (); | |
| 5154 | |
| 5155 /* Put all unmarked markers on free list. | |
| 5156 Dechain each one first from the buffer into which it points. */ | |
| 5157 sweep_markers (); | |
| 5158 | |
| 5159 sweep_events (); | |
| 5160 | |
| 1204 | 5161 #ifdef EVENT_DATA_AS_OBJECTS |
| 934 | 5162 sweep_key_data (); |
| 5163 sweep_button_data (); | |
| 5164 sweep_motion_data (); | |
| 5165 sweep_process_data (); | |
| 5166 sweep_timeout_data (); | |
| 5167 sweep_magic_data (); | |
| 5168 sweep_magic_eval_data (); | |
| 5169 sweep_eval_data (); | |
| 5170 sweep_misc_user_data (); | |
| 1204 | 5171 #endif /* EVENT_DATA_AS_OBJECTS */ |
| 2720 | 5172 #endif /* not MC_ALLOC */ |
| 5173 | |
| 5174 #ifndef MC_ALLOC | |
| 428 | 5175 #ifdef PDUMP |
| 442 | 5176 pdump_objects_unmark (); |
| 428 | 5177 #endif |
| 2720 | 5178 #endif /* not MC_ALLOC */ |
| 428 | 5179 } |
| 5180 | |
| 5181 /* Clearing for disksave. */ | |
| 5182 | |
| 5183 void | |
| 5184 disksave_object_finalization (void) | |
| 5185 { | |
| 5186 /* It's important that certain information from the environment not get | |
| 5187 dumped with the executable (pathnames, environment variables, etc.). | |
| 5188 To make it easier to tell when this has happened with strings(1) we | |
| 5189 clear some known-to-be-garbage blocks of memory, so that leftover | |
| 5190 results of old evaluation don't look like potential problems. | |
| 5191 But first we set some notable variables to nil and do one more GC, | |
| 5192 to turn those strings into garbage. | |
| 440 | 5193 */ |
| 428 | 5194 |
| 5195 /* Yeah, this list is pretty ad-hoc... */ | |
| 5196 Vprocess_environment = Qnil; | |
| 771 | 5197 env_initted = 0; |
| 428 | 5198 Vexec_directory = Qnil; |
| 5199 Vdata_directory = Qnil; | |
| 5200 Vsite_directory = Qnil; | |
| 5201 Vdoc_directory = Qnil; | |
| 5202 Vexec_path = Qnil; | |
| 5203 Vload_path = Qnil; | |
| 5204 /* Vdump_load_path = Qnil; */ | |
| 5205 /* Release hash tables for locate_file */ | |
| 5206 Flocate_file_clear_hashing (Qt); | |
| 771 | 5207 uncache_home_directory (); |
| 776 | 5208 zero_out_command_line_status_vars (); |
| 872 | 5209 clear_default_devices (); |
| 428 | 5210 |
| 5211 #if defined(LOADHIST) && !(defined(LOADHIST_DUMPED) || \ | |
| 5212 defined(LOADHIST_BUILTIN)) | |
| 5213 Vload_history = Qnil; | |
| 5214 #endif | |
| 5215 Vshell_file_name = Qnil; | |
| 5216 | |
| 5217 garbage_collect_1 (); | |
| 5218 | |
| 5219 /* Run the disksave finalization methods of all live objects. */ | |
| 5220 disksave_object_finalization_1 (); | |
| 5221 | |
| 5222 /* Zero out the uninitialized (really, unused) part of the containers | |
| 5223 for the live strings. */ | |
| 5224 { | |
| 5225 struct string_chars_block *scb; | |
| 5226 for (scb = first_string_chars_block; scb; scb = scb->next) | |
| 5227 { | |
| 5228 int count = sizeof (scb->string_chars) - scb->pos; | |
| 5229 | |
| 5230 assert (count >= 0 && count < STRING_CHARS_BLOCK_SIZE); | |
| 440 | 5231 if (count != 0) |
| 5232 { | |
| 5233 /* from the block's fill ptr to the end */ | |
| 5234 memset ((scb->string_chars + scb->pos), 0, count); | |
| 5235 } | |
| 428 | 5236 } |
| 5237 } | |
| 5238 | |
| 5239 /* There, that ought to be enough... */ | |
| 5240 | |
| 5241 } | |
| 5242 | |
| 5243 | |
| 771 | 5244 int |
| 5245 begin_gc_forbidden (void) | |
| 5246 { | |
| 853 | 5247 return internal_bind_int (&gc_currently_forbidden, 1); |
| 771 | 5248 } |
| 5249 | |
| 5250 void | |
| 5251 end_gc_forbidden (int count) | |
| 5252 { | |
| 5253 unbind_to (count); | |
| 5254 } | |
| 5255 | |
| 428 | 5256 /* Maybe we want to use this when doing a "panic" gc after memory_full()? */ |
| 5257 static int gc_hooks_inhibited; | |
| 5258 | |
| 611 | 5259 struct post_gc_action |
| 5260 { | |
| 5261 void (*fun) (void *); | |
| 5262 void *arg; | |
| 5263 }; | |
| 5264 | |
| 5265 typedef struct post_gc_action post_gc_action; | |
| 5266 | |
| 5267 typedef struct | |
| 5268 { | |
| 5269 Dynarr_declare (post_gc_action); | |
| 5270 } post_gc_action_dynarr; | |
| 5271 | |
| 5272 static post_gc_action_dynarr *post_gc_actions; | |
| 5273 | |
| 5274 /* Register an action to be called at the end of GC. | |
| 5275 gc_in_progress is 0 when this is called. | |
| 5276 This is used when it is discovered that an action needs to be taken, | |
| 5277 but it's during GC, so it's not safe. (e.g. in a finalize method.) | |
| 5278 | |
| 5279 As a general rule, do not use Lisp objects here. | |
| 5280 And NEVER signal an error. | |
| 5281 */ | |
| 5282 | |
| 5283 void | |
| 5284 register_post_gc_action (void (*fun) (void *), void *arg) | |
| 5285 { | |
| 5286 post_gc_action action; | |
| 5287 | |
| 5288 if (!post_gc_actions) | |
| 5289 post_gc_actions = Dynarr_new (post_gc_action); | |
| 5290 | |
| 5291 action.fun = fun; | |
| 5292 action.arg = arg; | |
| 5293 | |
| 5294 Dynarr_add (post_gc_actions, action); | |
| 5295 } | |
| 5296 | |
| 5297 static void | |
| 5298 run_post_gc_actions (void) | |
| 5299 { | |
| 5300 int i; | |
| 5301 | |
| 5302 if (post_gc_actions) | |
| 5303 { | |
| 5304 for (i = 0; i < Dynarr_length (post_gc_actions); i++) | |
| 5305 { | |
| 5306 post_gc_action action = Dynarr_at (post_gc_actions, i); | |
| 5307 (action.fun) (action.arg); | |
| 5308 } | |
| 5309 | |
| 5310 Dynarr_reset (post_gc_actions); | |
| 5311 } | |
| 5312 } | |
| 5313 | |
| 428 | 5314 |
| 5315 void | |
| 5316 garbage_collect_1 (void) | |
| 5317 { | |
| 5318 #if MAX_SAVE_STACK > 0 | |
| 5319 char stack_top_variable; | |
| 5320 extern char *stack_bottom; | |
| 5321 #endif | |
| 5322 struct frame *f; | |
| 5323 int speccount; | |
| 5324 int cursor_changed; | |
| 5325 Lisp_Object pre_gc_cursor; | |
| 5326 struct gcpro gcpro1; | |
| 1292 | 5327 PROFILE_DECLARE (); |
| 428 | 5328 |
| 1123 | 5329 assert (!in_display || gc_currently_forbidden); |
| 5330 | |
| 428 | 5331 if (gc_in_progress |
| 5332 || gc_currently_forbidden | |
| 5333 || in_display | |
| 5334 || preparing_for_armageddon) | |
| 5335 return; | |
| 5336 | |
| 1292 | 5337 PROFILE_RECORD_ENTERING_SECTION (QSin_garbage_collection); |
| 5338 | |
| 428 | 5339 /* We used to call selected_frame() here. |
| 5340 | |
| 5341 The following functions cannot be called inside GC | |
| 5342 so we move to after the above tests. */ | |
| 5343 { | |
| 5344 Lisp_Object frame; | |
| 5345 Lisp_Object device = Fselected_device (Qnil); | |
| 5346 if (NILP (device)) /* Could happen during startup, eg. if always_gc */ | |
| 5347 return; | |
| 872 | 5348 frame = Fselected_frame (device); |
| 428 | 5349 if (NILP (frame)) |
| 563 | 5350 invalid_state ("No frames exist on device", device); |
| 428 | 5351 f = XFRAME (frame); |
| 5352 } | |
| 5353 | |
| 5354 pre_gc_cursor = Qnil; | |
| 5355 cursor_changed = 0; | |
| 5356 | |
| 5357 GCPRO1 (pre_gc_cursor); | |
| 5358 | |
| 5359 /* Very important to prevent GC during any of the following | |
| 5360 stuff that might run Lisp code; otherwise, we'll likely | |
| 5361 have infinite GC recursion. */ | |
| 771 | 5362 speccount = begin_gc_forbidden (); |
| 428 | 5363 |
| 887 | 5364 need_to_signal_post_gc = 0; |
| 1318 | 5365 recompute_funcall_allocation_flag (); |
| 887 | 5366 |
| 428 | 5367 if (!gc_hooks_inhibited) |
| 853 | 5368 run_hook_trapping_problems |
| 1333 | 5369 (Qgarbage_collecting, Qpre_gc_hook, |
| 853 | 5370 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION); |
| 428 | 5371 |
| 5372 /* Now show the GC cursor/message. */ | |
| 5373 if (!noninteractive) | |
| 5374 { | |
| 5375 if (FRAME_WIN_P (f)) | |
| 5376 { | |
| 771 | 5377 Lisp_Object frame = wrap_frame (f); |
| 428 | 5378 Lisp_Object cursor = glyph_image_instance (Vgc_pointer_glyph, |
| 5379 FRAME_SELECTED_WINDOW (f), | |
| 5380 ERROR_ME_NOT, 1); | |
| 5381 pre_gc_cursor = f->pointer; | |
| 5382 if (POINTER_IMAGE_INSTANCEP (cursor) | |
| 5383 /* don't change if we don't know how to change back. */ | |
| 5384 && POINTER_IMAGE_INSTANCEP (pre_gc_cursor)) | |
| 5385 { | |
| 5386 cursor_changed = 1; | |
| 5387 Fset_frame_pointer (frame, cursor); | |
| 5388 } | |
| 5389 } | |
| 5390 | |
| 5391 /* Don't print messages to the stream device. */ | |
| 5392 if (!cursor_changed && !FRAME_STREAM_P (f)) | |
| 5393 { | |
| 1154 | 5394 if (garbage_collection_messages) |
| 5395 { | |
| 5396 Lisp_Object args[2], whole_msg; | |
| 5397 args[0] = (STRINGP (Vgc_message) ? Vgc_message : | |
| 5398 build_msg_string (gc_default_message)); | |
| 5399 args[1] = build_string ("..."); | |
| 5400 whole_msg = Fconcat (2, args); | |
| 5401 echo_area_message (f, (Ibyte *) 0, whole_msg, 0, -1, | |
| 5402 Qgarbage_collecting); | |
| 5403 } | |
| 428 | 5404 } |
| 5405 } | |
| 5406 | |
| 5407 /***** Now we actually start the garbage collection. */ | |
| 5408 | |
| 5409 gc_in_progress = 1; | |
| 2367 | 5410 inhibit_non_essential_conversion_operations = 1; |
| 428 | 5411 |
| 5412 gc_generation_number[0]++; | |
| 5413 | |
| 5414 #if MAX_SAVE_STACK > 0 | |
| 5415 | |
| 5416 /* Save a copy of the contents of the stack, for debugging. */ | |
| 5417 if (!purify_flag) | |
| 5418 { | |
| 5419 /* Static buffer in which we save a copy of the C stack at each GC. */ | |
| 5420 static char *stack_copy; | |
| 665 | 5421 static Bytecount stack_copy_size; |
| 428 | 5422 |
| 5423 ptrdiff_t stack_diff = &stack_top_variable - stack_bottom; | |
| 665 | 5424 Bytecount stack_size = (stack_diff > 0 ? stack_diff : -stack_diff); |
| 428 | 5425 if (stack_size < MAX_SAVE_STACK) |
| 5426 { | |
| 5427 if (stack_copy_size < stack_size) | |
| 5428 { | |
| 5429 stack_copy = (char *) xrealloc (stack_copy, stack_size); | |
| 5430 stack_copy_size = stack_size; | |
| 5431 } | |
| 5432 | |
| 5433 memcpy (stack_copy, | |
| 5434 stack_diff > 0 ? stack_bottom : &stack_top_variable, | |
| 5435 stack_size); | |
| 5436 } | |
| 5437 } | |
| 5438 #endif /* MAX_SAVE_STACK > 0 */ | |
| 5439 | |
| 5440 /* Do some totally ad-hoc resource clearing. */ | |
| 5441 /* #### generalize this? */ | |
| 5442 clear_event_resource (); | |
| 5443 cleanup_specifiers (); | |
| 1204 | 5444 cleanup_buffer_undo_lists (); |
| 428 | 5445 |
| 5446 /* Mark all the special slots that serve as the roots of accessibility. */ | |
| 5447 | |
| 1598 | 5448 #ifdef USE_KKCC |
| 5449 /* initialize kkcc stack */ | |
| 5450 kkcc_gc_stack_init(); | |
| 2645 | 5451 #define mark_object(obj) kkcc_gc_stack_push_lisp_object (obj, 0, -1) |
| 1598 | 5452 #endif /* USE_KKCC */ |
| 5453 | |
| 428 | 5454 { /* staticpro() */ |
| 452 | 5455 Lisp_Object **p = Dynarr_begin (staticpros); |
| 665 | 5456 Elemcount count; |
| 452 | 5457 for (count = Dynarr_length (staticpros); count; count--) |
| 5458 mark_object (**p++); | |
| 5459 } | |
| 5460 | |
| 5461 { /* staticpro_nodump() */ | |
| 5462 Lisp_Object **p = Dynarr_begin (staticpros_nodump); | |
| 665 | 5463 Elemcount count; |
| 452 | 5464 for (count = Dynarr_length (staticpros_nodump); count; count--) |
| 5465 mark_object (**p++); | |
| 428 | 5466 } |
| 5467 | |
| 2720 | 5468 #ifdef MC_ALLOC |
| 5469 { /* mcpro () */ | |
| 5470 Lisp_Object *p = Dynarr_begin (mcpros); | |
| 5471 Elemcount count; | |
| 5472 for (count = Dynarr_length (mcpros); count; count--) | |
| 5473 mark_object (*p++); | |
| 5474 } | |
| 5475 #endif /* MC_ALLOC */ | |
| 5476 | |
| 428 | 5477 { /* GCPRO() */ |
| 5478 struct gcpro *tail; | |
| 5479 int i; | |
| 5480 for (tail = gcprolist; tail; tail = tail->next) | |
| 5481 for (i = 0; i < tail->nvars; i++) | |
| 5482 mark_object (tail->var[i]); | |
| 5483 } | |
| 5484 | |
| 5485 { /* specbind() */ | |
| 5486 struct specbinding *bind; | |
| 5487 for (bind = specpdl; bind != specpdl_ptr; bind++) | |
| 5488 { | |
| 5489 mark_object (bind->symbol); | |
| 5490 mark_object (bind->old_value); | |
| 5491 } | |
| 5492 } | |
| 5493 | |
| 5494 { | |
| 5495 struct catchtag *catch; | |
| 5496 for (catch = catchlist; catch; catch = catch->next) | |
| 5497 { | |
| 5498 mark_object (catch->tag); | |
| 5499 mark_object (catch->val); | |
| 853 | 5500 mark_object (catch->actual_tag); |
| 2532 | 5501 mark_object (catch->backtrace); |
| 428 | 5502 } |
| 5503 } | |
| 5504 | |
| 5505 { | |
| 5506 struct backtrace *backlist; | |
| 5507 for (backlist = backtrace_list; backlist; backlist = backlist->next) | |
| 5508 { | |
| 5509 int nargs = backlist->nargs; | |
| 5510 int i; | |
| 5511 | |
| 5512 mark_object (*backlist->function); | |
| 1292 | 5513 if (nargs < 0 /* nargs == UNEVALLED || nargs == MANY */ |
| 5514 /* might be fake (internal profiling entry) */ | |
| 5515 && backlist->args) | |
| 428 | 5516 mark_object (backlist->args[0]); |
| 5517 else | |
| 5518 for (i = 0; i < nargs; i++) | |
| 5519 mark_object (backlist->args[i]); | |
| 5520 } | |
| 5521 } | |
| 5522 | |
| 5523 mark_profiling_info (); | |
| 5524 | |
| 5525 /* OK, now do the after-mark stuff. This is for things that | |
| 5526 are only marked when something else is marked (e.g. weak hash tables). | |
| 5527 There may be complex dependencies between such objects -- e.g. | |
| 5528 a weak hash table might be unmarked, but after processing a later | |
| 5529 weak hash table, the former one might get marked. So we have to | |
| 5530 iterate until nothing more gets marked. */ | |
| 1598 | 5531 #ifdef USE_KKCC |
| 5532 kkcc_marking (); | |
| 5533 #endif /* USE_KKCC */ | |
| 1590 | 5534 init_marking_ephemerons (); |
| 428 | 5535 while (finish_marking_weak_hash_tables () > 0 || |
| 887 | 5536 finish_marking_weak_lists () > 0 || |
| 1590 | 5537 continue_marking_ephemerons () > 0) |
|
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|
5538 #ifdef USE_KKCC |
|
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5539 { |
|
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|
5540 kkcc_marking (); |
|
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|
5541 } |
|
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|
5542 #else /* NOT USE_KKCC */ |
| 1590 | 5543 ; |
| 1598 | 5544 #endif /* USE_KKCC */ |
| 5545 | |
| 1590 | 5546 /* At this point, we know which objects need to be finalized: we |
| 5547 still need to resurrect them */ | |
| 5548 | |
| 5549 while (finish_marking_ephemerons () > 0 || | |
| 5550 finish_marking_weak_lists () > 0 || | |
| 5551 finish_marking_weak_hash_tables () > 0) | |
| 1643 | 5552 #ifdef USE_KKCC |
|
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|
5553 { |
|
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|
5554 kkcc_marking (); |
|
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|
5555 } |
| 1643 | 5556 kkcc_gc_stack_free (); |
| 1676 | 5557 #undef mark_object |
|
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|
5558 #else /* NOT USE_KKCC */ |
|
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|
5559 ; |
| 1643 | 5560 #endif /* USE_KKCC */ |
| 5561 | |
| 428 | 5562 /* And prune (this needs to be called after everything else has been |
| 5563 marked and before we do any sweeping). */ | |
| 5564 /* #### this is somewhat ad-hoc and should probably be an object | |
| 5565 method */ | |
| 5566 prune_weak_hash_tables (); | |
| 5567 prune_weak_lists (); | |
| 5568 prune_specifiers (); | |
| 5569 prune_syntax_tables (); | |
| 5570 | |
| 887 | 5571 prune_ephemerons (); |
| 858 | 5572 prune_weak_boxes (); |
| 5573 | |
| 428 | 5574 gc_sweep (); |
| 5575 | |
| 5576 consing_since_gc = 0; | |
| 5577 #ifndef DEBUG_XEMACS | |
| 5578 /* Allow you to set it really fucking low if you really want ... */ | |
| 5579 if (gc_cons_threshold < 10000) | |
| 5580 gc_cons_threshold = 10000; | |
| 5581 #endif | |
| 814 | 5582 recompute_need_to_garbage_collect (); |
| 428 | 5583 |
| 2367 | 5584 inhibit_non_essential_conversion_operations = 0; |
| 428 | 5585 gc_in_progress = 0; |
| 5586 | |
| 611 | 5587 run_post_gc_actions (); |
| 5588 | |
| 428 | 5589 /******* End of garbage collection ********/ |
| 5590 | |
| 5591 /* Now remove the GC cursor/message */ | |
| 5592 if (!noninteractive) | |
| 5593 { | |
| 5594 if (cursor_changed) | |
| 771 | 5595 Fset_frame_pointer (wrap_frame (f), pre_gc_cursor); |
| 428 | 5596 else if (!FRAME_STREAM_P (f)) |
| 5597 { | |
| 5598 /* Show "...done" only if the echo area would otherwise be empty. */ | |
| 5599 if (NILP (clear_echo_area (selected_frame (), | |
| 5600 Qgarbage_collecting, 0))) | |
| 5601 { | |
| 1154 | 5602 if (garbage_collection_messages) |
| 5603 { | |
| 5604 Lisp_Object args[2], whole_msg; | |
| 5605 args[0] = (STRINGP (Vgc_message) ? Vgc_message : | |
| 5606 build_msg_string (gc_default_message)); | |
| 5607 args[1] = build_msg_string ("... done"); | |
| 5608 whole_msg = Fconcat (2, args); | |
| 5609 echo_area_message (selected_frame (), (Ibyte *) 0, | |
| 5610 whole_msg, 0, -1, | |
| 5611 Qgarbage_collecting); | |
| 5612 } | |
| 428 | 5613 } |
| 5614 } | |
| 5615 } | |
| 5616 | |
| 5617 /* now stop inhibiting GC */ | |
| 771 | 5618 unbind_to (speccount); |
| 428 | 5619 |
| 2720 | 5620 #ifndef MC_ALLOC |
| 428 | 5621 if (!breathing_space) |
| 5622 { | |
| 5623 breathing_space = malloc (4096 - MALLOC_OVERHEAD); | |
| 5624 } | |
| 2720 | 5625 #endif /* not MC_ALLOC */ |
| 428 | 5626 |
| 5627 UNGCPRO; | |
| 887 | 5628 |
| 5629 need_to_signal_post_gc = 1; | |
| 5630 funcall_allocation_flag = 1; | |
| 5631 | |
| 1292 | 5632 PROFILE_RECORD_EXITING_SECTION (QSin_garbage_collection); |
| 5633 | |
| 428 | 5634 return; |
| 5635 } | |
| 5636 | |
| 2720 | 5637 #ifdef MC_ALLOC |
| 5638 #ifdef MC_ALLOC_TYPE_STATS | |
| 5639 static Lisp_Object | |
| 5640 gc_plist_hack (const Ascbyte *name, int value, Lisp_Object tail) | |
| 5641 { | |
| 5642 /* C doesn't have local functions (or closures, or GC, or readable syntax, | |
| 5643 or portable numeric datatypes, or bit-vectors, or characters, or | |
| 5644 arrays, or exceptions, or ...) */ | |
| 5645 return cons3 (intern (name), make_int (value), tail); | |
| 5646 } | |
| 5647 #endif /* MC_ALLOC_TYPE_STATS */ | |
| 5648 | |
| 5649 DEFUN ("garbage-collect", Fgarbage_collect, 0, 0, "", /* | |
| 5650 Reclaim storage for Lisp objects no longer needed. | |
| 5651 Return info on amount of space in use: | |
| 5652 ((USED-CONSES . STORAGE-CONSES) (USED-SYMS . STORAGE-SYMS) | |
| 5653 (USED-MARKERS . STORAGE-MARKERS) USED-STRING-CHARS USED-VECTOR-SLOTS | |
| 5654 PLIST) | |
| 5655 where `PLIST' is a list of alternating keyword/value pairs providing | |
| 5656 more detailed information. | |
| 5657 Garbage collection happens automatically if you cons more than | |
| 5658 `gc-cons-threshold' bytes of Lisp data since previous garbage collection. | |
| 5659 */ | |
| 5660 ()) | |
| 5661 { | |
| 5662 #ifdef MC_ALLOC_TYPE_STATS | |
| 5663 Lisp_Object pl = Qnil; | |
| 5664 int i; | |
| 5665 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 5666 | |
| 5667 garbage_collect_1 (); | |
| 5668 | |
| 5669 #ifdef MC_ALLOC_TYPE_STATS | |
| 5670 for (i = 0; i < (countof (lrecord_implementations_table) | |
| 5671 + MODULE_DEFINABLE_TYPE_COUNT); i++) | |
| 5672 { | |
| 5673 if (lrecord_stats[i].instances_in_use != 0) | |
| 5674 { | |
| 5675 char buf [255]; | |
| 5676 const char *name = lrecord_implementations_table[i]->name; | |
| 5677 int len = strlen (name); | |
| 5678 | |
| 5679 if (lrecord_stats[i].bytes_in_use_including_overhead != | |
| 5680 lrecord_stats[i].bytes_in_use) | |
| 5681 { | |
| 5682 sprintf (buf, "%s-storage-including-overhead", name); | |
| 5683 pl = gc_plist_hack (buf, | |
| 5684 lrecord_stats[i] | |
| 5685 .bytes_in_use_including_overhead, | |
| 5686 pl); | |
| 5687 } | |
| 5688 | |
| 5689 sprintf (buf, "%s-storage", name); | |
| 5690 pl = gc_plist_hack (buf, | |
| 5691 lrecord_stats[i].bytes_in_use, | |
| 5692 pl); | |
| 5693 | |
| 5694 if (name[len-1] == 's') | |
| 5695 sprintf (buf, "%ses-used", name); | |
| 5696 else | |
| 5697 sprintf (buf, "%ss-used", name); | |
| 5698 pl = gc_plist_hack (buf, lrecord_stats[i].instances_in_use, pl); | |
| 5699 } | |
| 5700 } | |
| 5701 | |
| 5702 /* The things we do for backwards-compatibility */ | |
| 5703 return | |
| 5704 list6 | |
| 5705 (Fcons (make_int (lrecord_stats[lrecord_type_cons].instances_in_use), | |
| 5706 make_int (lrecord_stats[lrecord_type_cons] | |
| 5707 .bytes_in_use_including_overhead)), | |
| 5708 Fcons (make_int (lrecord_stats[lrecord_type_symbol].instances_in_use), | |
| 5709 make_int (lrecord_stats[lrecord_type_symbol] | |
| 5710 .bytes_in_use_including_overhead)), | |
| 5711 Fcons (make_int (lrecord_stats[lrecord_type_marker].instances_in_use), | |
| 5712 make_int (lrecord_stats[lrecord_type_marker] | |
| 5713 .bytes_in_use_including_overhead)), | |
| 5714 make_int (lrecord_stats[lrecord_type_string] | |
| 5715 .bytes_in_use_including_overhead), | |
| 5716 make_int (lrecord_stats[lrecord_type_vector] | |
| 5717 .bytes_in_use_including_overhead), | |
| 5718 pl); | |
| 5719 #else /* not MC_ALLOC_TYPE_STATS */ | |
| 5720 return Qnil; | |
| 5721 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 5722 } | |
| 5723 #else /* not MC_ALLOC */ | |
| 428 | 5724 /* Debugging aids. */ |
| 5725 | |
| 5726 static Lisp_Object | |
| 2367 | 5727 gc_plist_hack (const Ascbyte *name, int value, Lisp_Object tail) |
| 428 | 5728 { |
| 5729 /* C doesn't have local functions (or closures, or GC, or readable syntax, | |
| 5730 or portable numeric datatypes, or bit-vectors, or characters, or | |
| 5731 arrays, or exceptions, or ...) */ | |
| 5732 return cons3 (intern (name), make_int (value), tail); | |
| 5733 } | |
| 5734 | |
| 5735 #define HACK_O_MATIC(type, name, pl) do { \ | |
| 5736 int s = 0; \ | |
| 5737 struct type##_block *x = current_##type##_block; \ | |
| 5738 while (x) { s += sizeof (*x) + MALLOC_OVERHEAD; x = x->prev; } \ | |
| 5739 (pl) = gc_plist_hack ((name), s, (pl)); \ | |
| 5740 } while (0) | |
| 5741 | |
| 5742 DEFUN ("garbage-collect", Fgarbage_collect, 0, 0, "", /* | |
| 5743 Reclaim storage for Lisp objects no longer needed. | |
| 5744 Return info on amount of space in use: | |
| 5745 ((USED-CONSES . FREE-CONSES) (USED-SYMS . FREE-SYMS) | |
| 5746 (USED-MARKERS . FREE-MARKERS) USED-STRING-CHARS USED-VECTOR-SLOTS | |
| 5747 PLIST) | |
| 5748 where `PLIST' is a list of alternating keyword/value pairs providing | |
| 5749 more detailed information. | |
| 5750 Garbage collection happens automatically if you cons more than | |
| 5751 `gc-cons-threshold' bytes of Lisp data since previous garbage collection. | |
| 5752 */ | |
| 5753 ()) | |
| 5754 { | |
| 5755 Lisp_Object pl = Qnil; | |
| 647 | 5756 int i; |
| 428 | 5757 int gc_count_vector_total_size = 0; |
| 5758 garbage_collect_1 (); | |
| 5759 | |
| 442 | 5760 for (i = 0; i < lrecord_type_count; i++) |
| 428 | 5761 { |
| 5762 if (lcrecord_stats[i].bytes_in_use != 0 | |
| 5763 || lcrecord_stats[i].bytes_freed != 0 | |
| 5764 || lcrecord_stats[i].instances_on_free_list != 0) | |
| 5765 { | |
| 5766 char buf [255]; | |
| 442 | 5767 const char *name = lrecord_implementations_table[i]->name; |
| 428 | 5768 int len = strlen (name); |
| 5769 /* save this for the FSFmacs-compatible part of the summary */ | |
| 460 | 5770 if (i == lrecord_type_vector) |
| 428 | 5771 gc_count_vector_total_size = |
| 5772 lcrecord_stats[i].bytes_in_use + lcrecord_stats[i].bytes_freed; | |
| 5773 | |
| 5774 sprintf (buf, "%s-storage", name); | |
| 5775 pl = gc_plist_hack (buf, lcrecord_stats[i].bytes_in_use, pl); | |
| 5776 /* Okay, simple pluralization check for `symbol-value-varalias' */ | |
| 5777 if (name[len-1] == 's') | |
| 5778 sprintf (buf, "%ses-freed", name); | |
| 5779 else | |
| 5780 sprintf (buf, "%ss-freed", name); | |
| 5781 if (lcrecord_stats[i].instances_freed != 0) | |
| 5782 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_freed, pl); | |
| 5783 if (name[len-1] == 's') | |
| 5784 sprintf (buf, "%ses-on-free-list", name); | |
| 5785 else | |
| 5786 sprintf (buf, "%ss-on-free-list", name); | |
| 5787 if (lcrecord_stats[i].instances_on_free_list != 0) | |
| 5788 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_on_free_list, | |
| 5789 pl); | |
| 5790 if (name[len-1] == 's') | |
| 5791 sprintf (buf, "%ses-used", name); | |
| 5792 else | |
| 5793 sprintf (buf, "%ss-used", name); | |
| 5794 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_in_use, pl); | |
| 5795 } | |
| 5796 } | |
| 5797 | |
| 5798 HACK_O_MATIC (extent, "extent-storage", pl); | |
| 5799 pl = gc_plist_hack ("extents-free", gc_count_num_extent_freelist, pl); | |
| 5800 pl = gc_plist_hack ("extents-used", gc_count_num_extent_in_use, pl); | |
| 5801 HACK_O_MATIC (event, "event-storage", pl); | |
| 5802 pl = gc_plist_hack ("events-free", gc_count_num_event_freelist, pl); | |
| 5803 pl = gc_plist_hack ("events-used", gc_count_num_event_in_use, pl); | |
| 5804 HACK_O_MATIC (marker, "marker-storage", pl); | |
| 5805 pl = gc_plist_hack ("markers-free", gc_count_num_marker_freelist, pl); | |
| 5806 pl = gc_plist_hack ("markers-used", gc_count_num_marker_in_use, pl); | |
| 5807 HACK_O_MATIC (float, "float-storage", pl); | |
| 5808 pl = gc_plist_hack ("floats-free", gc_count_num_float_freelist, pl); | |
| 5809 pl = gc_plist_hack ("floats-used", gc_count_num_float_in_use, pl); | |
| 1983 | 5810 #ifdef HAVE_BIGNUM |
| 5811 HACK_O_MATIC (bignum, "bignum-storage", pl); | |
| 5812 pl = gc_plist_hack ("bignums-free", gc_count_num_bignum_freelist, pl); | |
| 5813 pl = gc_plist_hack ("bignums-used", gc_count_num_bignum_in_use, pl); | |
| 5814 #endif /* HAVE_BIGNUM */ | |
| 5815 #ifdef HAVE_RATIO | |
| 5816 HACK_O_MATIC (ratio, "ratio-storage", pl); | |
| 5817 pl = gc_plist_hack ("ratios-free", gc_count_num_ratio_freelist, pl); | |
| 5818 pl = gc_plist_hack ("ratios-used", gc_count_num_ratio_in_use, pl); | |
| 5819 #endif /* HAVE_RATIO */ | |
| 5820 #ifdef HAVE_BIGFLOAT | |
| 5821 HACK_O_MATIC (bigfloat, "bigfloat-storage", pl); | |
| 5822 pl = gc_plist_hack ("bigfloats-free", gc_count_num_bigfloat_freelist, pl); | |
| 5823 pl = gc_plist_hack ("bigfloats-used", gc_count_num_bigfloat_in_use, pl); | |
| 5824 #endif /* HAVE_BIGFLOAT */ | |
| 428 | 5825 HACK_O_MATIC (string, "string-header-storage", pl); |
| 5826 pl = gc_plist_hack ("long-strings-total-length", | |
| 5827 gc_count_string_total_size | |
| 5828 - gc_count_short_string_total_size, pl); | |
| 5829 HACK_O_MATIC (string_chars, "short-string-storage", pl); | |
| 5830 pl = gc_plist_hack ("short-strings-total-length", | |
| 5831 gc_count_short_string_total_size, pl); | |
| 5832 pl = gc_plist_hack ("strings-free", gc_count_num_string_freelist, pl); | |
| 5833 pl = gc_plist_hack ("long-strings-used", | |
| 5834 gc_count_num_string_in_use | |
| 5835 - gc_count_num_short_string_in_use, pl); | |
| 5836 pl = gc_plist_hack ("short-strings-used", | |
| 5837 gc_count_num_short_string_in_use, pl); | |
| 5838 | |
| 5839 HACK_O_MATIC (compiled_function, "compiled-function-storage", pl); | |
| 5840 pl = gc_plist_hack ("compiled-functions-free", | |
| 5841 gc_count_num_compiled_function_freelist, pl); | |
| 5842 pl = gc_plist_hack ("compiled-functions-used", | |
| 5843 gc_count_num_compiled_function_in_use, pl); | |
| 5844 | |
| 5845 HACK_O_MATIC (symbol, "symbol-storage", pl); | |
| 5846 pl = gc_plist_hack ("symbols-free", gc_count_num_symbol_freelist, pl); | |
| 5847 pl = gc_plist_hack ("symbols-used", gc_count_num_symbol_in_use, pl); | |
| 5848 | |
| 5849 HACK_O_MATIC (cons, "cons-storage", pl); | |
| 5850 pl = gc_plist_hack ("conses-free", gc_count_num_cons_freelist, pl); | |
| 5851 pl = gc_plist_hack ("conses-used", gc_count_num_cons_in_use, pl); | |
| 5852 | |
| 5853 /* The things we do for backwards-compatibility */ | |
| 5854 return | |
| 5855 list6 (Fcons (make_int (gc_count_num_cons_in_use), | |
| 5856 make_int (gc_count_num_cons_freelist)), | |
| 5857 Fcons (make_int (gc_count_num_symbol_in_use), | |
| 5858 make_int (gc_count_num_symbol_freelist)), | |
| 5859 Fcons (make_int (gc_count_num_marker_in_use), | |
| 5860 make_int (gc_count_num_marker_freelist)), | |
| 5861 make_int (gc_count_string_total_size), | |
| 5862 make_int (gc_count_vector_total_size), | |
| 5863 pl); | |
| 5864 } | |
| 5865 #undef HACK_O_MATIC | |
| 2720 | 5866 #endif /* not MC_ALLOC */ |
| 428 | 5867 |
| 5868 DEFUN ("consing-since-gc", Fconsing_since_gc, 0, 0, "", /* | |
| 5869 Return the number of bytes consed since the last garbage collection. | |
| 5870 \"Consed\" is a misnomer in that this actually counts allocation | |
| 5871 of all different kinds of objects, not just conses. | |
| 5872 | |
| 5873 If this value exceeds `gc-cons-threshold', a garbage collection happens. | |
| 5874 */ | |
| 5875 ()) | |
| 5876 { | |
| 5877 return make_int (consing_since_gc); | |
| 5878 } | |
| 5879 | |
| 440 | 5880 #if 0 |
| 444 | 5881 DEFUN ("memory-limit", Fmemory_limit, 0, 0, 0, /* |
| 801 | 5882 Return the address of the last byte XEmacs has allocated, divided by 1024. |
| 5883 This may be helpful in debugging XEmacs's memory usage. | |
| 428 | 5884 The value is divided by 1024 to make sure it will fit in a lisp integer. |
| 5885 */ | |
| 5886 ()) | |
| 5887 { | |
| 5888 return make_int ((EMACS_INT) sbrk (0) / 1024); | |
| 5889 } | |
| 440 | 5890 #endif |
| 428 | 5891 |
| 801 | 5892 DEFUN ("memory-usage", Fmemory_usage, 0, 0, 0, /* |
| 5893 Return the total number of bytes used by the data segment in XEmacs. | |
| 5894 This may be helpful in debugging XEmacs's memory usage. | |
| 5895 */ | |
| 5896 ()) | |
| 5897 { | |
| 5898 return make_int (total_data_usage ()); | |
| 5899 } | |
| 5900 | |
| 851 | 5901 void |
| 5902 recompute_funcall_allocation_flag (void) | |
| 5903 { | |
| 887 | 5904 funcall_allocation_flag = |
| 5905 need_to_garbage_collect || | |
| 5906 need_to_check_c_alloca || | |
| 5907 need_to_signal_post_gc; | |
| 851 | 5908 } |
| 5909 | |
| 801 | 5910 /* True if it's time to garbage collect now. */ |
| 814 | 5911 static void |
| 5912 recompute_need_to_garbage_collect (void) | |
| 801 | 5913 { |
| 5914 if (always_gc) | |
| 814 | 5915 need_to_garbage_collect = 1; |
| 5916 else | |
| 5917 need_to_garbage_collect = | |
| 5918 (consing_since_gc > gc_cons_threshold | |
| 5919 #if 0 /* #### implement this better */ | |
| 5920 && | |
| 5921 (100 * consing_since_gc) / total_data_usage () >= | |
| 5922 gc_cons_percentage | |
| 5923 #endif /* 0 */ | |
| 5924 ); | |
| 851 | 5925 recompute_funcall_allocation_flag (); |
| 801 | 5926 } |
| 5927 | |
| 428 | 5928 |
| 5929 int | |
| 5930 object_dead_p (Lisp_Object obj) | |
| 5931 { | |
| 5932 return ((BUFFERP (obj) && !BUFFER_LIVE_P (XBUFFER (obj))) || | |
| 5933 (FRAMEP (obj) && !FRAME_LIVE_P (XFRAME (obj))) || | |
| 5934 (WINDOWP (obj) && !WINDOW_LIVE_P (XWINDOW (obj))) || | |
| 5935 (DEVICEP (obj) && !DEVICE_LIVE_P (XDEVICE (obj))) || | |
| 5936 (CONSOLEP (obj) && !CONSOLE_LIVE_P (XCONSOLE (obj))) || | |
| 5937 (EVENTP (obj) && !EVENT_LIVE_P (XEVENT (obj))) || | |
| 5938 (EXTENTP (obj) && !EXTENT_LIVE_P (XEXTENT (obj)))); | |
| 5939 } | |
| 5940 | |
| 5941 #ifdef MEMORY_USAGE_STATS | |
| 5942 | |
| 5943 /* Attempt to determine the actual amount of space that is used for | |
| 5944 the block allocated starting at PTR, supposedly of size "CLAIMED_SIZE". | |
| 5945 | |
| 5946 It seems that the following holds: | |
| 5947 | |
| 5948 1. When using the old allocator (malloc.c): | |
| 5949 | |
| 5950 -- blocks are always allocated in chunks of powers of two. For | |
| 5951 each block, there is an overhead of 8 bytes if rcheck is not | |
| 5952 defined, 20 bytes if it is defined. In other words, a | |
| 5953 one-byte allocation needs 8 bytes of overhead for a total of | |
| 5954 9 bytes, and needs to have 16 bytes of memory chunked out for | |
| 5955 it. | |
| 5956 | |
| 5957 2. When using the new allocator (gmalloc.c): | |
| 5958 | |
| 5959 -- blocks are always allocated in chunks of powers of two up | |
| 5960 to 4096 bytes. Larger blocks are allocated in chunks of | |
| 5961 an integral multiple of 4096 bytes. The minimum block | |
| 5962 size is 2*sizeof (void *), or 16 bytes if SUNOS_LOCALTIME_BUG | |
| 5963 is defined. There is no per-block overhead, but there | |
| 5964 is an overhead of 3*sizeof (size_t) for each 4096 bytes | |
| 5965 allocated. | |
| 5966 | |
| 5967 3. When using the system malloc, anything goes, but they are | |
| 5968 generally slower and more space-efficient than the GNU | |
| 5969 allocators. One possibly reasonable assumption to make | |
| 5970 for want of better data is that sizeof (void *), or maybe | |
| 5971 2 * sizeof (void *), is required as overhead and that | |
| 5972 blocks are allocated in the minimum required size except | |
| 5973 that some minimum block size is imposed (e.g. 16 bytes). */ | |
| 5974 | |
| 665 | 5975 Bytecount |
| 2286 | 5976 malloced_storage_size (void *UNUSED (ptr), Bytecount claimed_size, |
| 428 | 5977 struct overhead_stats *stats) |
| 5978 { | |
| 665 | 5979 Bytecount orig_claimed_size = claimed_size; |
| 428 | 5980 |
| 5981 #ifdef GNU_MALLOC | |
| 665 | 5982 if (claimed_size < (Bytecount) (2 * sizeof (void *))) |
| 428 | 5983 claimed_size = 2 * sizeof (void *); |
| 5984 # ifdef SUNOS_LOCALTIME_BUG | |
| 5985 if (claimed_size < 16) | |
| 5986 claimed_size = 16; | |
| 5987 # endif | |
| 5988 if (claimed_size < 4096) | |
| 5989 { | |
| 2260 | 5990 /* fxg: rename log->log2 to supress gcc3 shadow warning */ |
| 5991 int log2 = 1; | |
| 428 | 5992 |
| 5993 /* compute the log base two, more or less, then use it to compute | |
| 5994 the block size needed. */ | |
| 5995 claimed_size--; | |
| 5996 /* It's big, it's heavy, it's wood! */ | |
| 5997 while ((claimed_size /= 2) != 0) | |
| 2260 | 5998 ++log2; |
| 428 | 5999 claimed_size = 1; |
| 6000 /* It's better than bad, it's good! */ | |
| 2260 | 6001 while (log2 > 0) |
| 428 | 6002 { |
| 6003 claimed_size *= 2; | |
| 2260 | 6004 log2--; |
| 428 | 6005 } |
| 6006 /* We have to come up with some average about the amount of | |
| 6007 blocks used. */ | |
| 665 | 6008 if ((Bytecount) (rand () & 4095) < claimed_size) |
| 428 | 6009 claimed_size += 3 * sizeof (void *); |
| 6010 } | |
| 6011 else | |
| 6012 { | |
| 6013 claimed_size += 4095; | |
| 6014 claimed_size &= ~4095; | |
| 6015 claimed_size += (claimed_size / 4096) * 3 * sizeof (size_t); | |
| 6016 } | |
| 6017 | |
| 6018 #elif defined (SYSTEM_MALLOC) | |
| 6019 | |
| 6020 if (claimed_size < 16) | |
| 6021 claimed_size = 16; | |
| 6022 claimed_size += 2 * sizeof (void *); | |
| 6023 | |
| 6024 #else /* old GNU allocator */ | |
| 6025 | |
| 6026 # ifdef rcheck /* #### may not be defined here */ | |
| 6027 claimed_size += 20; | |
| 6028 # else | |
| 6029 claimed_size += 8; | |
| 6030 # endif | |
| 6031 { | |
| 2260 | 6032 /* fxg: rename log->log2 to supress gcc3 shadow warning */ |
| 6033 int log2 = 1; | |
| 428 | 6034 |
| 6035 /* compute the log base two, more or less, then use it to compute | |
| 6036 the block size needed. */ | |
| 6037 claimed_size--; | |
| 6038 /* It's big, it's heavy, it's wood! */ | |
| 6039 while ((claimed_size /= 2) != 0) | |
| 2260 | 6040 ++log2; |
| 428 | 6041 claimed_size = 1; |
| 6042 /* It's better than bad, it's good! */ | |
| 2260 | 6043 while (log2 > 0) |
| 428 | 6044 { |
| 6045 claimed_size *= 2; | |
| 2260 | 6046 log2--; |
| 428 | 6047 } |
| 6048 } | |
| 6049 | |
| 6050 #endif /* old GNU allocator */ | |
| 6051 | |
| 6052 if (stats) | |
| 6053 { | |
| 6054 stats->was_requested += orig_claimed_size; | |
| 6055 stats->malloc_overhead += claimed_size - orig_claimed_size; | |
| 6056 } | |
| 6057 return claimed_size; | |
| 6058 } | |
| 6059 | |
| 2720 | 6060 #ifndef MC_ALLOC |
| 665 | 6061 Bytecount |
| 6062 fixed_type_block_overhead (Bytecount size) | |
| 428 | 6063 { |
| 665 | 6064 Bytecount per_block = TYPE_ALLOC_SIZE (cons, unsigned char); |
| 6065 Bytecount overhead = 0; | |
| 6066 Bytecount storage_size = malloced_storage_size (0, per_block, 0); | |
| 428 | 6067 while (size >= per_block) |
| 6068 { | |
| 6069 size -= per_block; | |
| 6070 overhead += sizeof (void *) + per_block - storage_size; | |
| 6071 } | |
| 6072 if (rand () % per_block < size) | |
| 6073 overhead += sizeof (void *) + per_block - storage_size; | |
| 6074 return overhead; | |
| 6075 } | |
| 2720 | 6076 #endif /* not MC_ALLOC */ |
| 428 | 6077 #endif /* MEMORY_USAGE_STATS */ |
| 6078 | |
| 6079 | |
| 6080 /* Initialization */ | |
| 771 | 6081 static void |
| 1204 | 6082 common_init_alloc_early (void) |
| 428 | 6083 { |
| 771 | 6084 #ifndef Qzero |
| 6085 Qzero = make_int (0); /* Only used if Lisp_Object is a union type */ | |
| 6086 #endif | |
| 6087 | |
| 6088 #ifndef Qnull_pointer | |
| 6089 /* C guarantees that Qnull_pointer will be initialized to all 0 bits, | |
| 6090 so the following is actually a no-op. */ | |
| 793 | 6091 Qnull_pointer = wrap_pointer_1 (0); |
| 771 | 6092 #endif |
| 6093 | |
| 428 | 6094 gc_generation_number[0] = 0; |
| 2720 | 6095 #ifndef MC_ALLOC |
| 428 | 6096 breathing_space = 0; |
| 2720 | 6097 #endif /* not MC_ALLOC */ |
| 771 | 6098 Vgc_message = Qzero; |
| 2720 | 6099 #ifndef MC_ALLOC |
| 428 | 6100 all_lcrecords = 0; |
| 2720 | 6101 #endif /* not MC_ALLOC */ |
| 428 | 6102 ignore_malloc_warnings = 1; |
| 6103 #ifdef DOUG_LEA_MALLOC | |
| 6104 mallopt (M_TRIM_THRESHOLD, 128*1024); /* trim threshold */ | |
| 6105 mallopt (M_MMAP_THRESHOLD, 64*1024); /* mmap threshold */ | |
| 6106 #if 0 /* Moved to emacs.c */ | |
| 6107 mallopt (M_MMAP_MAX, 64); /* max. number of mmap'ed areas */ | |
| 6108 #endif | |
| 6109 #endif | |
| 2720 | 6110 init_string_chars_alloc (); |
| 6111 #ifndef MC_ALLOC | |
| 428 | 6112 init_string_alloc (); |
| 6113 init_string_chars_alloc (); | |
| 6114 init_cons_alloc (); | |
| 6115 init_symbol_alloc (); | |
| 6116 init_compiled_function_alloc (); | |
| 6117 init_float_alloc (); | |
| 1983 | 6118 #ifdef HAVE_BIGNUM |
| 6119 init_bignum_alloc (); | |
| 6120 #endif | |
| 6121 #ifdef HAVE_RATIO | |
| 6122 init_ratio_alloc (); | |
| 6123 #endif | |
| 6124 #ifdef HAVE_BIGFLOAT | |
| 6125 init_bigfloat_alloc (); | |
| 6126 #endif | |
| 428 | 6127 init_marker_alloc (); |
| 6128 init_extent_alloc (); | |
| 6129 init_event_alloc (); | |
| 1204 | 6130 #ifdef EVENT_DATA_AS_OBJECTS |
| 934 | 6131 init_key_data_alloc (); |
| 6132 init_button_data_alloc (); | |
| 6133 init_motion_data_alloc (); | |
| 6134 init_process_data_alloc (); | |
| 6135 init_timeout_data_alloc (); | |
| 6136 init_magic_data_alloc (); | |
| 6137 init_magic_eval_data_alloc (); | |
| 6138 init_eval_data_alloc (); | |
| 6139 init_misc_user_data_alloc (); | |
| 1204 | 6140 #endif /* EVENT_DATA_AS_OBJECTS */ |
| 2720 | 6141 #endif /* not MC_ALLOC */ |
| 428 | 6142 |
| 6143 ignore_malloc_warnings = 0; | |
| 6144 | |
| 452 | 6145 if (staticpros_nodump) |
| 6146 Dynarr_free (staticpros_nodump); | |
| 6147 staticpros_nodump = Dynarr_new2 (Lisp_Object_ptr_dynarr, Lisp_Object *); | |
| 6148 Dynarr_resize (staticpros_nodump, 100); /* merely a small optimization */ | |
| 771 | 6149 #ifdef DEBUG_XEMACS |
| 6150 if (staticpro_nodump_names) | |
| 6151 Dynarr_free (staticpro_nodump_names); | |
| 6152 staticpro_nodump_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6153 Dynarr_resize (staticpro_nodump_names, 100); /* ditto */ | |
| 6154 #endif | |
| 428 | 6155 |
| 2720 | 6156 #ifdef MC_ALLOC |
| 6157 mcpros = Dynarr_new2 (Lisp_Object_dynarr, Lisp_Object); | |
| 6158 Dynarr_resize (mcpros, 1410); /* merely a small optimization */ | |
| 6159 dump_add_root_block_ptr (&mcpros, &mcpros_description); | |
| 6160 #ifdef DEBUG_XEMACS | |
| 6161 mcpro_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6162 Dynarr_resize (mcpro_names, 1410); /* merely a small optimization */ | |
| 6163 dump_add_root_block_ptr (&mcpro_names, &mcpro_names_description); | |
| 6164 #endif | |
| 6165 #endif /* MC_ALLOC */ | |
| 6166 | |
| 428 | 6167 consing_since_gc = 0; |
| 814 | 6168 need_to_garbage_collect = always_gc; |
| 851 | 6169 need_to_check_c_alloca = 0; |
| 6170 funcall_allocation_flag = 0; | |
| 6171 funcall_alloca_count = 0; | |
| 814 | 6172 |
| 428 | 6173 #if 1 |
| 6174 gc_cons_threshold = 500000; /* XEmacs change */ | |
| 6175 #else | |
| 6176 gc_cons_threshold = 15000; /* debugging */ | |
| 6177 #endif | |
| 801 | 6178 gc_cons_percentage = 0; /* #### 20; Don't have an accurate measure of |
| 6179 memory usage on Windows; not verified on other | |
| 6180 systems */ | |
| 428 | 6181 lrecord_uid_counter = 259; |
| 2720 | 6182 #ifndef MC_ALLOC |
| 428 | 6183 debug_string_purity = 0; |
| 2720 | 6184 #endif /* not MC_ALLOC */ |
| 428 | 6185 |
| 6186 gc_currently_forbidden = 0; | |
| 6187 gc_hooks_inhibited = 0; | |
| 6188 | |
| 800 | 6189 #ifdef ERROR_CHECK_TYPES |
| 428 | 6190 ERROR_ME.really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = |
| 6191 666; | |
| 6192 ERROR_ME_NOT. | |
| 6193 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = 42; | |
| 6194 ERROR_ME_WARN. | |
| 6195 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = | |
| 6196 3333632; | |
| 793 | 6197 ERROR_ME_DEBUG_WARN. |
| 6198 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = | |
| 6199 8675309; | |
| 800 | 6200 #endif /* ERROR_CHECK_TYPES */ |
| 428 | 6201 } |
| 6202 | |
| 2720 | 6203 #ifndef MC_ALLOC |
| 771 | 6204 static void |
| 6205 init_lcrecord_lists (void) | |
| 6206 { | |
| 6207 int i; | |
| 6208 | |
| 6209 for (i = 0; i < countof (lrecord_implementations_table); i++) | |
| 6210 { | |
| 6211 all_lcrecord_lists[i] = Qzero; /* Qnil not yet set */ | |
| 6212 staticpro_nodump (&all_lcrecord_lists[i]); | |
| 6213 } | |
| 6214 } | |
| 2720 | 6215 #endif /* not MC_ALLOC */ |
| 771 | 6216 |
| 6217 void | |
| 1204 | 6218 init_alloc_early (void) |
| 771 | 6219 { |
| 1204 | 6220 #if defined (__cplusplus) && defined (ERROR_CHECK_GC) |
| 6221 static struct gcpro initial_gcpro; | |
| 6222 | |
| 6223 initial_gcpro.next = 0; | |
| 6224 initial_gcpro.var = &Qnil; | |
| 6225 initial_gcpro.nvars = 1; | |
| 6226 gcprolist = &initial_gcpro; | |
| 6227 #else | |
| 6228 gcprolist = 0; | |
| 6229 #endif /* defined (__cplusplus) && defined (ERROR_CHECK_GC) */ | |
| 6230 } | |
| 6231 | |
| 6232 void | |
| 6233 reinit_alloc_early (void) | |
| 6234 { | |
| 6235 common_init_alloc_early (); | |
| 2720 | 6236 #ifndef MC_ALLOC |
| 771 | 6237 init_lcrecord_lists (); |
| 2720 | 6238 #endif /* not MC_ALLOC */ |
| 771 | 6239 } |
| 6240 | |
| 428 | 6241 void |
| 6242 init_alloc_once_early (void) | |
| 6243 { | |
| 1204 | 6244 common_init_alloc_early (); |
| 428 | 6245 |
| 442 | 6246 { |
| 6247 int i; | |
| 6248 for (i = 0; i < countof (lrecord_implementations_table); i++) | |
| 6249 lrecord_implementations_table[i] = 0; | |
| 6250 } | |
| 6251 | |
| 6252 INIT_LRECORD_IMPLEMENTATION (cons); | |
| 6253 INIT_LRECORD_IMPLEMENTATION (vector); | |
| 6254 INIT_LRECORD_IMPLEMENTATION (string); | |
| 2720 | 6255 #ifndef MC_ALLOC |
| 442 | 6256 INIT_LRECORD_IMPLEMENTATION (lcrecord_list); |
| 1204 | 6257 INIT_LRECORD_IMPLEMENTATION (free); |
| 2720 | 6258 #endif /* not MC_ALLOC */ |
| 428 | 6259 |
| 452 | 6260 staticpros = Dynarr_new2 (Lisp_Object_ptr_dynarr, Lisp_Object *); |
| 6261 Dynarr_resize (staticpros, 1410); /* merely a small optimization */ | |
| 2367 | 6262 dump_add_root_block_ptr (&staticpros, &staticpros_description); |
| 771 | 6263 #ifdef DEBUG_XEMACS |
| 6264 staticpro_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6265 Dynarr_resize (staticpro_names, 1410); /* merely a small optimization */ | |
| 2367 | 6266 dump_add_root_block_ptr (&staticpro_names, &staticpro_names_description); |
| 771 | 6267 #endif |
| 6268 | |
| 2720 | 6269 #ifdef MC_ALLOC |
| 6270 mcpros = Dynarr_new2 (Lisp_Object_dynarr, Lisp_Object); | |
| 6271 Dynarr_resize (mcpros, 1410); /* merely a small optimization */ | |
| 6272 dump_add_root_block_ptr (&mcpros, &mcpros_description); | |
| 6273 #ifdef DEBUG_XEMACS | |
| 6274 mcpro_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6275 Dynarr_resize (mcpro_names, 1410); /* merely a small optimization */ | |
| 6276 dump_add_root_block_ptr (&mcpro_names, &mcpro_names_description); | |
| 6277 #endif | |
| 6278 #endif /* MC_ALLOC */ | |
| 6279 | |
| 6280 #ifndef MC_ALLOC | |
| 771 | 6281 init_lcrecord_lists (); |
| 2720 | 6282 #endif /* not MC_ALLOC */ |
| 428 | 6283 } |
| 6284 | |
| 6285 void | |
| 6286 syms_of_alloc (void) | |
| 6287 { | |
| 442 | 6288 DEFSYMBOL (Qpre_gc_hook); |
| 6289 DEFSYMBOL (Qpost_gc_hook); | |
| 6290 DEFSYMBOL (Qgarbage_collecting); | |
| 428 | 6291 |
| 6292 DEFSUBR (Fcons); | |
| 6293 DEFSUBR (Flist); | |
| 6294 DEFSUBR (Fvector); | |
| 6295 DEFSUBR (Fbit_vector); | |
| 6296 DEFSUBR (Fmake_byte_code); | |
| 6297 DEFSUBR (Fmake_list); | |
| 6298 DEFSUBR (Fmake_vector); | |
| 6299 DEFSUBR (Fmake_bit_vector); | |
| 6300 DEFSUBR (Fmake_string); | |
| 6301 DEFSUBR (Fstring); | |
| 6302 DEFSUBR (Fmake_symbol); | |
| 6303 DEFSUBR (Fmake_marker); | |
| 6304 DEFSUBR (Fpurecopy); | |
| 6305 DEFSUBR (Fgarbage_collect); | |
| 440 | 6306 #if 0 |
| 428 | 6307 DEFSUBR (Fmemory_limit); |
| 440 | 6308 #endif |
| 801 | 6309 DEFSUBR (Fmemory_usage); |
| 428 | 6310 DEFSUBR (Fconsing_since_gc); |
| 6311 } | |
| 6312 | |
| 6313 void | |
| 6314 vars_of_alloc (void) | |
| 6315 { | |
| 1292 | 6316 QSin_garbage_collection = build_msg_string ("(in garbage collection)"); |
| 6317 staticpro (&QSin_garbage_collection); | |
| 6318 | |
| 428 | 6319 DEFVAR_INT ("gc-cons-threshold", &gc_cons_threshold /* |
| 6320 *Number of bytes of consing between garbage collections. | |
| 6321 \"Consing\" is a misnomer in that this actually counts allocation | |
| 6322 of all different kinds of objects, not just conses. | |
| 6323 Garbage collection can happen automatically once this many bytes have been | |
| 6324 allocated since the last garbage collection. All data types count. | |
| 6325 | |
| 6326 Garbage collection happens automatically when `eval' or `funcall' are | |
| 6327 called. (Note that `funcall' is called implicitly as part of evaluation.) | |
| 6328 By binding this temporarily to a large number, you can effectively | |
| 6329 prevent garbage collection during a part of the program. | |
| 6330 | |
| 853 | 6331 Normally, you cannot set this value less than 10,000 (if you do, it is |
| 6332 automatically reset during the next garbage collection). However, if | |
| 6333 XEmacs was compiled with DEBUG_XEMACS, this does not happen, allowing | |
| 6334 you to set this value very low to track down problems with insufficient | |
| 6335 GCPRO'ing. If you set this to a negative number, garbage collection will | |
| 6336 happen at *EVERY* call to `eval' or `funcall'. This is an extremely | |
| 6337 effective way to check GCPRO problems, but be warned that your XEmacs | |
| 6338 will be unusable! You almost certainly won't have the patience to wait | |
| 6339 long enough to be able to set it back. | |
| 6340 | |
| 428 | 6341 See also `consing-since-gc'. |
| 6342 */ ); | |
| 6343 | |
| 801 | 6344 DEFVAR_INT ("gc-cons-percentage", &gc_cons_percentage /* |
| 6345 *Percentage of memory allocated between garbage collections. | |
| 6346 | |
| 6347 Garbage collection will happen if this percentage of the total amount of | |
| 6348 memory used for data has been allocated since the last garbage collection. | |
| 6349 However, it will not happen if less than `gc-cons-threshold' bytes have | |
| 6350 been allocated -- this sets an absolute minimum in case very little data | |
| 6351 has been allocated or the percentage is set very low. Set this to 0 to | |
| 6352 have garbage collection always happen after `gc-cons-threshold' bytes have | |
| 6353 been allocated, regardless of current memory usage. | |
| 6354 | |
| 6355 Garbage collection happens automatically when `eval' or `funcall' are | |
| 6356 called. (Note that `funcall' is called implicitly as part of evaluation.) | |
| 6357 By binding this temporarily to a large number, you can effectively | |
| 6358 prevent garbage collection during a part of the program. | |
| 6359 | |
| 6360 See also `consing-since-gc'. | |
| 6361 */ ); | |
| 6362 | |
| 428 | 6363 #ifdef DEBUG_XEMACS |
| 6364 DEFVAR_INT ("debug-allocation", &debug_allocation /* | |
| 6365 If non-zero, print out information to stderr about all objects allocated. | |
| 6366 See also `debug-allocation-backtrace-length'. | |
| 6367 */ ); | |
| 6368 debug_allocation = 0; | |
| 6369 | |
| 6370 DEFVAR_INT ("debug-allocation-backtrace-length", | |
| 6371 &debug_allocation_backtrace_length /* | |
| 6372 Length (in stack frames) of short backtrace printed out by `debug-allocation'. | |
| 6373 */ ); | |
| 6374 debug_allocation_backtrace_length = 2; | |
| 6375 #endif | |
| 6376 | |
| 6377 DEFVAR_BOOL ("purify-flag", &purify_flag /* | |
| 6378 Non-nil means loading Lisp code in order to dump an executable. | |
| 6379 This means that certain objects should be allocated in readonly space. | |
| 6380 */ ); | |
| 6381 | |
| 1154 | 6382 DEFVAR_BOOL ("garbage-collection-messages", &garbage_collection_messages /* |
| 6383 Non-nil means display messages at start and end of garbage collection. | |
| 6384 */ ); | |
| 6385 garbage_collection_messages = 0; | |
| 6386 | |
| 428 | 6387 DEFVAR_LISP ("pre-gc-hook", &Vpre_gc_hook /* |
| 6388 Function or functions to be run just before each garbage collection. | |
| 6389 Interrupts, garbage collection, and errors are inhibited while this hook | |
| 6390 runs, so be extremely careful in what you add here. In particular, avoid | |
| 6391 consing, and do not interact with the user. | |
| 6392 */ ); | |
| 6393 Vpre_gc_hook = Qnil; | |
| 6394 | |
| 6395 DEFVAR_LISP ("post-gc-hook", &Vpost_gc_hook /* | |
| 6396 Function or functions to be run just after each garbage collection. | |
| 6397 Interrupts, garbage collection, and errors are inhibited while this hook | |
| 887 | 6398 runs. Each hook is called with one argument which is an alist with |
| 6399 finalization data. | |
| 428 | 6400 */ ); |
| 6401 Vpost_gc_hook = Qnil; | |
| 6402 | |
| 6403 DEFVAR_LISP ("gc-message", &Vgc_message /* | |
| 6404 String to print to indicate that a garbage collection is in progress. | |
| 6405 This is printed in the echo area. If the selected frame is on a | |
| 6406 window system and `gc-pointer-glyph' specifies a value (i.e. a pointer | |
| 6407 image instance) in the domain of the selected frame, the mouse pointer | |
| 6408 will change instead of this message being printed. | |
| 6409 */ ); | |
| 6410 Vgc_message = build_string (gc_default_message); | |
| 6411 | |
| 6412 DEFVAR_LISP ("gc-pointer-glyph", &Vgc_pointer_glyph /* | |
| 6413 Pointer glyph used to indicate that a garbage collection is in progress. | |
| 6414 If the selected window is on a window system and this glyph specifies a | |
| 6415 value (i.e. a pointer image instance) in the domain of the selected | |
| 6416 window, the pointer will be changed as specified during garbage collection. | |
| 6417 Otherwise, a message will be printed in the echo area, as controlled | |
| 6418 by `gc-message'. | |
| 6419 */ ); | |
| 6420 } | |
| 6421 | |
| 6422 void | |
| 6423 complex_vars_of_alloc (void) | |
| 6424 { | |
| 6425 Vgc_pointer_glyph = Fmake_glyph_internal (Qpointer); | |
| 6426 } |