Mercurial > hg > xemacs-beta
annotate src/alloc.c @ 2796:d3bdda4872ac
[xemacs-hg @ 2005-06-01 10:51:34 by crestani]
* ralloc.c:
* ralloc.c (r_alloc_free): Call refill_memory_reserve only if
MC_ALLOC is not defined.
| author | crestani |
|---|---|
| date | Wed, 01 Jun 2005 10:51:36 +0000 |
| parents | 05d62157e048 |
| children | adda8fccb13d |
| 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 | |
| 2775 | 522 int lrecord_string_data_instances_in_use; |
| 523 int lrecord_string_data_bytes_in_use; | |
| 524 int lrecord_string_data_bytes_in_use_including_overhead; | |
| 525 | |
| 2720 | 526 void |
| 527 init_lrecord_stats () | |
| 528 { | |
| 529 xzero (lrecord_stats); | |
| 2775 | 530 lrecord_string_data_instances_in_use = 0; |
| 531 lrecord_string_data_bytes_in_use = 0; | |
| 532 lrecord_string_data_bytes_in_use_including_overhead = 0; | |
| 533 } | |
| 534 | |
| 535 void | |
| 536 inc_lrecord_string_data_stats (Bytecount size) | |
| 537 { | |
| 538 lrecord_string_data_instances_in_use++; | |
| 539 lrecord_string_data_bytes_in_use += size; | |
| 540 lrecord_string_data_bytes_in_use_including_overhead += size; | |
| 541 } | |
| 542 | |
| 543 void | |
| 544 dec_lrecord_string_data_stats (Bytecount size) | |
| 545 { | |
| 546 lrecord_string_data_instances_in_use--; | |
| 547 lrecord_string_data_bytes_in_use -= size; | |
| 548 lrecord_string_data_bytes_in_use_including_overhead -= size; | |
| 2720 | 549 } |
| 550 | |
| 551 void | |
| 552 inc_lrecord_stats (Bytecount size, const struct lrecord_header *h) | |
| 553 { | |
| 554 int type_index = h->type; | |
| 555 if (!size) | |
| 556 size = detagged_lisp_object_size (h); | |
| 557 | |
| 558 lrecord_stats[type_index].instances_in_use++; | |
| 559 lrecord_stats[type_index].bytes_in_use += size; | |
| 560 lrecord_stats[type_index].bytes_in_use_including_overhead | |
| 561 #ifdef MEMORY_USAGE_STATS | |
| 562 += mc_alloced_storage_size (size, 0); | |
| 563 #else /* not MEMORY_USAGE_STATS */ | |
| 564 += size; | |
| 565 #endif /* not MEMORY_USAGE_STATS */ | |
| 566 } | |
| 567 | |
| 568 void | |
| 569 dec_lrecord_stats (Bytecount size_including_overhead, | |
| 570 const struct lrecord_header *h) | |
| 571 { | |
| 572 int type_index = h->type; | |
| 2775 | 573 int size = detagged_lisp_object_size (h); |
| 2720 | 574 |
| 575 lrecord_stats[type_index].instances_in_use--; | |
| 2775 | 576 lrecord_stats[type_index].bytes_in_use -= size; |
| 2720 | 577 lrecord_stats[type_index].bytes_in_use_including_overhead |
| 578 -= size_including_overhead; | |
| 579 | |
| 2775 | 580 DECREMENT_CONS_COUNTER (size); |
| 2720 | 581 } |
| 582 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 583 | |
| 584 #ifndef MC_ALLOC | |
| 442 | 585 /* lcrecords are chained together through their "next" field. |
| 586 After doing the mark phase, GC will walk this linked list | |
| 587 and free any lcrecord which hasn't been marked. */ | |
| 428 | 588 static struct lcrecord_header *all_lcrecords; |
| 2720 | 589 #endif /* not MC_ALLOC */ |
| 590 | |
| 591 #ifdef MC_ALLOC | |
| 592 /* The basic lrecord allocation functions. See lrecord.h for details. */ | |
| 593 void * | |
| 594 alloc_lrecord (Bytecount size, | |
| 595 const struct lrecord_implementation *implementation) | |
| 596 { | |
| 597 struct lrecord_header *lheader; | |
| 598 | |
| 599 type_checking_assert | |
| 600 ((implementation->static_size == 0 ? | |
| 601 implementation->size_in_bytes_method != NULL : | |
| 602 implementation->static_size == size)); | |
| 603 | |
| 604 lheader = (struct lrecord_header *) mc_alloc (size); | |
| 605 gc_checking_assert (LRECORD_FREE_P (lheader)); | |
| 606 set_lheader_implementation (lheader, implementation); | |
| 607 lheader->uid = lrecord_uid_counter++; | |
| 608 #ifdef MC_ALLOC_TYPE_STATS | |
| 609 inc_lrecord_stats (size, lheader); | |
| 610 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 611 INCREMENT_CONS_COUNTER (size, implementation->name); | |
| 612 return lheader; | |
| 613 } | |
| 614 | |
| 615 void * | |
| 616 noseeum_alloc_lrecord (Bytecount size, | |
| 617 const struct lrecord_implementation *implementation) | |
| 618 { | |
| 619 struct lrecord_header *lheader; | |
| 620 | |
| 621 type_checking_assert | |
| 622 ((implementation->static_size == 0 ? | |
| 623 implementation->size_in_bytes_method != NULL : | |
| 624 implementation->static_size == size)); | |
| 625 | |
| 626 lheader = (struct lrecord_header *) mc_alloc (size); | |
| 627 gc_checking_assert (LRECORD_FREE_P (lheader)); | |
| 628 set_lheader_implementation (lheader, implementation); | |
| 629 lheader->uid = lrecord_uid_counter++; | |
| 630 #ifdef MC_ALLOC_TYPE_STATS | |
| 631 inc_lrecord_stats (size, lheader); | |
| 632 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 633 NOSEEUM_INCREMENT_CONS_COUNTER (size, implementation->name); | |
| 634 return lheader; | |
| 635 } | |
| 636 | |
| 637 void | |
| 638 free_lrecord (Lisp_Object lrecord) | |
| 639 { | |
| 640 gc_checking_assert (!gc_in_progress); | |
| 641 gc_checking_assert (!LRECORD_FREE_P (XRECORD_LHEADER (lrecord))); | |
| 642 gc_checking_assert (!XRECORD_LHEADER (lrecord)->free); | |
| 643 | |
| 644 MC_ALLOC_CALL_FINALIZER (XPNTR (lrecord)); | |
| 645 mc_free (XPNTR (lrecord)); | |
| 646 } | |
| 647 #else /* not MC_ALLOC */ | |
| 428 | 648 |
| 1204 | 649 /* The most basic of the lcrecord allocation functions. Not usually called |
| 650 directly. Allocates an lrecord not managed by any lcrecord-list, of a | |
| 651 specified size. See lrecord.h. */ | |
| 652 | |
| 428 | 653 void * |
| 1204 | 654 basic_alloc_lcrecord (Bytecount size, |
| 655 const struct lrecord_implementation *implementation) | |
| 428 | 656 { |
| 657 struct lcrecord_header *lcheader; | |
| 658 | |
| 442 | 659 type_checking_assert |
| 660 ((implementation->static_size == 0 ? | |
| 661 implementation->size_in_bytes_method != NULL : | |
| 662 implementation->static_size == size) | |
| 663 && | |
| 664 (! implementation->basic_p) | |
| 665 && | |
| 666 (! (implementation->hash == NULL && implementation->equal != NULL))); | |
| 428 | 667 |
| 668 lcheader = (struct lcrecord_header *) allocate_lisp_storage (size); | |
| 442 | 669 set_lheader_implementation (&lcheader->lheader, implementation); |
| 428 | 670 lcheader->next = all_lcrecords; |
| 671 #if 1 /* mly prefers to see small ID numbers */ | |
| 672 lcheader->uid = lrecord_uid_counter++; | |
| 673 #else /* jwz prefers to see real addrs */ | |
| 674 lcheader->uid = (int) &lcheader; | |
| 675 #endif | |
| 676 lcheader->free = 0; | |
| 677 all_lcrecords = lcheader; | |
| 678 INCREMENT_CONS_COUNTER (size, implementation->name); | |
| 679 return lcheader; | |
| 680 } | |
| 681 | |
| 682 #if 0 /* Presently unused */ | |
| 683 /* Very, very poor man's EGC? | |
| 684 * This may be slow and thrash pages all over the place. | |
| 685 * Only call it if you really feel you must (and if the | |
| 686 * lrecord was fairly recently allocated). | |
| 687 * Otherwise, just let the GC do its job -- that's what it's there for | |
| 688 */ | |
| 689 void | |
| 771 | 690 very_old_free_lcrecord (struct lcrecord_header *lcrecord) |
| 428 | 691 { |
| 692 if (all_lcrecords == lcrecord) | |
| 693 { | |
| 694 all_lcrecords = lcrecord->next; | |
| 695 } | |
| 696 else | |
| 697 { | |
| 698 struct lrecord_header *header = all_lcrecords; | |
| 699 for (;;) | |
| 700 { | |
| 701 struct lrecord_header *next = header->next; | |
| 702 if (next == lcrecord) | |
| 703 { | |
| 704 header->next = lrecord->next; | |
| 705 break; | |
| 706 } | |
| 707 else if (next == 0) | |
| 2500 | 708 ABORT (); |
| 428 | 709 else |
| 710 header = next; | |
| 711 } | |
| 712 } | |
| 713 if (lrecord->implementation->finalizer) | |
| 714 lrecord->implementation->finalizer (lrecord, 0); | |
| 715 xfree (lrecord); | |
| 716 return; | |
| 717 } | |
| 718 #endif /* Unused */ | |
| 2720 | 719 #endif /* not MC_ALLOC */ |
| 428 | 720 |
| 721 | |
| 722 static void | |
| 723 disksave_object_finalization_1 (void) | |
| 724 { | |
| 2720 | 725 #ifdef MC_ALLOC |
| 726 mc_finalize_for_disksave (); | |
| 727 #else /* not MC_ALLOC */ | |
| 428 | 728 struct lcrecord_header *header; |
| 729 | |
| 730 for (header = all_lcrecords; header; header = header->next) | |
| 731 { | |
| 442 | 732 if (LHEADER_IMPLEMENTATION (&header->lheader)->finalizer && |
| 428 | 733 !header->free) |
| 442 | 734 LHEADER_IMPLEMENTATION (&header->lheader)->finalizer (header, 1); |
| 428 | 735 } |
| 2720 | 736 #endif /* not MC_ALLOC */ |
| 428 | 737 } |
| 738 | |
| 1204 | 739 /* Bitwise copy all parts of a Lisp object other than the header */ |
| 740 | |
| 741 void | |
| 742 copy_lisp_object (Lisp_Object dst, Lisp_Object src) | |
| 743 { | |
| 744 const struct lrecord_implementation *imp = | |
| 745 XRECORD_LHEADER_IMPLEMENTATION (src); | |
| 746 Bytecount size = lisp_object_size (src); | |
| 747 | |
| 748 assert (imp == XRECORD_LHEADER_IMPLEMENTATION (dst)); | |
| 749 assert (size == lisp_object_size (dst)); | |
| 750 | |
| 2720 | 751 #ifdef MC_ALLOC |
| 752 memcpy ((char *) XRECORD_LHEADER (dst) + sizeof (struct lrecord_header), | |
| 753 (char *) XRECORD_LHEADER (src) + sizeof (struct lrecord_header), | |
| 754 size - sizeof (struct lrecord_header)); | |
| 755 #else /* not MC_ALLOC */ | |
| 1204 | 756 if (imp->basic_p) |
| 757 memcpy ((char *) XRECORD_LHEADER (dst) + sizeof (struct lrecord_header), | |
| 758 (char *) XRECORD_LHEADER (src) + sizeof (struct lrecord_header), | |
| 759 size - sizeof (struct lrecord_header)); | |
| 760 else | |
| 761 memcpy ((char *) XRECORD_LHEADER (dst) + sizeof (struct lcrecord_header), | |
| 762 (char *) XRECORD_LHEADER (src) + sizeof (struct lcrecord_header), | |
| 763 size - sizeof (struct lcrecord_header)); | |
| 2720 | 764 #endif /* not MC_ALLOC */ |
| 1204 | 765 } |
| 766 | |
| 428 | 767 |
| 768 /************************************************************************/ | |
| 769 /* Debugger support */ | |
| 770 /************************************************************************/ | |
| 771 /* Give gdb/dbx enough information to decode Lisp Objects. We make | |
| 772 sure certain symbols are always defined, so gdb doesn't complain | |
| 438 | 773 about expressions in src/.gdbinit. See src/.gdbinit or src/.dbxrc |
| 774 to see how this is used. */ | |
| 428 | 775 |
| 458 | 776 EMACS_UINT dbg_valmask = ((1UL << VALBITS) - 1) << GCBITS; |
| 777 EMACS_UINT dbg_typemask = (1UL << GCTYPEBITS) - 1; | |
| 428 | 778 |
| 779 #ifdef USE_UNION_TYPE | |
| 458 | 780 unsigned char dbg_USE_UNION_TYPE = 1; |
| 428 | 781 #else |
| 458 | 782 unsigned char dbg_USE_UNION_TYPE = 0; |
| 428 | 783 #endif |
| 784 | |
| 458 | 785 unsigned char dbg_valbits = VALBITS; |
| 786 unsigned char dbg_gctypebits = GCTYPEBITS; | |
| 787 | |
| 788 /* On some systems, the above definitions will be optimized away by | |
| 789 the compiler or linker unless they are referenced in some function. */ | |
| 790 long dbg_inhibit_dbg_symbol_deletion (void); | |
| 791 long | |
| 792 dbg_inhibit_dbg_symbol_deletion (void) | |
| 793 { | |
| 794 return | |
| 795 (dbg_valmask + | |
| 796 dbg_typemask + | |
| 797 dbg_USE_UNION_TYPE + | |
| 798 dbg_valbits + | |
| 799 dbg_gctypebits); | |
| 800 } | |
| 428 | 801 |
| 802 /* Macros turned into functions for ease of debugging. | |
| 803 Debuggers don't know about macros! */ | |
| 804 int dbg_eq (Lisp_Object obj1, Lisp_Object obj2); | |
| 805 int | |
| 806 dbg_eq (Lisp_Object obj1, Lisp_Object obj2) | |
| 807 { | |
| 808 return EQ (obj1, obj2); | |
| 809 } | |
| 810 | |
| 811 | |
| 2720 | 812 #ifndef MC_ALLOC |
| 428 | 813 /************************************************************************/ |
| 814 /* Fixed-size type macros */ | |
| 815 /************************************************************************/ | |
| 816 | |
| 817 /* For fixed-size types that are commonly used, we malloc() large blocks | |
| 818 of memory at a time and subdivide them into chunks of the correct | |
| 819 size for an object of that type. This is more efficient than | |
| 820 malloc()ing each object separately because we save on malloc() time | |
| 821 and overhead due to the fewer number of malloc()ed blocks, and | |
| 822 also because we don't need any extra pointers within each object | |
| 823 to keep them threaded together for GC purposes. For less common | |
| 824 (and frequently large-size) types, we use lcrecords, which are | |
| 825 malloc()ed individually and chained together through a pointer | |
| 826 in the lcrecord header. lcrecords do not need to be fixed-size | |
| 827 (i.e. two objects of the same type need not have the same size; | |
| 828 however, the size of a particular object cannot vary dynamically). | |
| 829 It is also much easier to create a new lcrecord type because no | |
| 830 additional code needs to be added to alloc.c. Finally, lcrecords | |
| 831 may be more efficient when there are only a small number of them. | |
| 832 | |
| 833 The types that are stored in these large blocks (or "frob blocks") | |
| 1983 | 834 are cons, all number types except fixnum, compiled-function, symbol, |
| 835 marker, extent, event, and string. | |
| 428 | 836 |
| 837 Note that strings are special in that they are actually stored in | |
| 838 two parts: a structure containing information about the string, and | |
| 839 the actual data associated with the string. The former structure | |
| 840 (a struct Lisp_String) is a fixed-size structure and is managed the | |
| 841 same way as all the other such types. This structure contains a | |
| 842 pointer to the actual string data, which is stored in structures of | |
| 843 type struct string_chars_block. Each string_chars_block consists | |
| 844 of a pointer to a struct Lisp_String, followed by the data for that | |
| 440 | 845 string, followed by another pointer to a Lisp_String, followed by |
| 846 the data for that string, etc. At GC time, the data in these | |
| 847 blocks is compacted by searching sequentially through all the | |
| 428 | 848 blocks and compressing out any holes created by unmarked strings. |
| 849 Strings that are more than a certain size (bigger than the size of | |
| 850 a string_chars_block, although something like half as big might | |
| 851 make more sense) are malloc()ed separately and not stored in | |
| 852 string_chars_blocks. Furthermore, no one string stretches across | |
| 853 two string_chars_blocks. | |
| 854 | |
| 1204 | 855 Vectors are each malloc()ed separately as lcrecords. |
| 428 | 856 |
| 857 In the following discussion, we use conses, but it applies equally | |
| 858 well to the other fixed-size types. | |
| 859 | |
| 860 We store cons cells inside of cons_blocks, allocating a new | |
| 861 cons_block with malloc() whenever necessary. Cons cells reclaimed | |
| 862 by GC are put on a free list to be reallocated before allocating | |
| 863 any new cons cells from the latest cons_block. Each cons_block is | |
| 864 just under 2^n - MALLOC_OVERHEAD bytes long, since malloc (at least | |
| 865 the versions in malloc.c and gmalloc.c) really allocates in units | |
| 866 of powers of two and uses 4 bytes for its own overhead. | |
| 867 | |
| 868 What GC actually does is to search through all the cons_blocks, | |
| 869 from the most recently allocated to the oldest, and put all | |
| 870 cons cells that are not marked (whether or not they're already | |
| 871 free) on a cons_free_list. The cons_free_list is a stack, and | |
| 872 so the cons cells in the oldest-allocated cons_block end up | |
| 873 at the head of the stack and are the first to be reallocated. | |
| 874 If any cons_block is entirely free, it is freed with free() | |
| 875 and its cons cells removed from the cons_free_list. Because | |
| 876 the cons_free_list ends up basically in memory order, we have | |
| 877 a high locality of reference (assuming a reasonable turnover | |
| 878 of allocating and freeing) and have a reasonable probability | |
| 879 of entirely freeing up cons_blocks that have been more recently | |
| 880 allocated. This stage is called the "sweep stage" of GC, and | |
| 881 is executed after the "mark stage", which involves starting | |
| 882 from all places that are known to point to in-use Lisp objects | |
| 883 (e.g. the obarray, where are all symbols are stored; the | |
| 884 current catches and condition-cases; the backtrace list of | |
| 885 currently executing functions; the gcpro list; etc.) and | |
| 886 recursively marking all objects that are accessible. | |
| 887 | |
| 454 | 888 At the beginning of the sweep stage, the conses in the cons blocks |
| 889 are in one of three states: in use and marked, in use but not | |
| 890 marked, and not in use (already freed). Any conses that are marked | |
| 891 have been marked in the mark stage just executed, because as part | |
| 892 of the sweep stage we unmark any marked objects. The way we tell | |
| 893 whether or not a cons cell is in use is through the LRECORD_FREE_P | |
| 894 macro. This uses a special lrecord type `lrecord_type_free', | |
| 895 which is never associated with any valid object. | |
| 896 | |
| 897 Conses on the free_cons_list are threaded through a pointer stored | |
| 898 in the conses themselves. Because the cons is still in a | |
| 899 cons_block and needs to remain marked as not in use for the next | |
| 900 time that GC happens, we need room to store both the "free" | |
| 901 indicator and the chaining pointer. So this pointer is stored | |
| 902 after the lrecord header (actually where C places a pointer after | |
| 903 the lrecord header; they are not necessarily contiguous). This | |
| 904 implies that all fixed-size types must be big enough to contain at | |
| 905 least one pointer. This is true for all current fixed-size types, | |
| 906 with the possible exception of Lisp_Floats, for which we define the | |
| 907 meat of the struct using a union of a pointer and a double to | |
| 908 ensure adequate space for the free list chain pointer. | |
| 428 | 909 |
| 910 Some types of objects need additional "finalization" done | |
| 911 when an object is converted from in use to not in use; | |
| 912 this is the purpose of the ADDITIONAL_FREE_type macro. | |
| 913 For example, markers need to be removed from the chain | |
| 914 of markers that is kept in each buffer. This is because | |
| 915 markers in a buffer automatically disappear if the marker | |
| 916 is no longer referenced anywhere (the same does not | |
| 917 apply to extents, however). | |
| 918 | |
| 919 WARNING: Things are in an extremely bizarre state when | |
| 920 the ADDITIONAL_FREE_type macros are called, so beware! | |
| 921 | |
| 454 | 922 When ERROR_CHECK_GC is defined, we do things differently so as to |
| 923 maximize our chances of catching places where there is insufficient | |
| 924 GCPROing. The thing we want to avoid is having an object that | |
| 925 we're using but didn't GCPRO get freed by GC and then reallocated | |
| 926 while we're in the process of using it -- this will result in | |
| 927 something seemingly unrelated getting trashed, and is extremely | |
| 928 difficult to track down. If the object gets freed but not | |
| 929 reallocated, we can usually catch this because we set most of the | |
| 930 bytes of a freed object to 0xDEADBEEF. (The lisp object type is set | |
| 931 to the invalid type `lrecord_type_free', however, and a pointer | |
| 932 used to chain freed objects together is stored after the lrecord | |
| 933 header; we play some tricks with this pointer to make it more | |
| 428 | 934 bogus, so crashes are more likely to occur right away.) |
| 935 | |
| 936 We want freed objects to stay free as long as possible, | |
| 937 so instead of doing what we do above, we maintain the | |
| 938 free objects in a first-in first-out queue. We also | |
| 939 don't recompute the free list each GC, unlike above; | |
| 940 this ensures that the queue ordering is preserved. | |
| 941 [This means that we are likely to have worse locality | |
| 942 of reference, and that we can never free a frob block | |
| 943 once it's allocated. (Even if we know that all cells | |
| 944 in it are free, there's no easy way to remove all those | |
| 945 cells from the free list because the objects on the | |
| 946 free list are unlikely to be in memory order.)] | |
| 947 Furthermore, we never take objects off the free list | |
| 948 unless there's a large number (usually 1000, but | |
| 949 varies depending on type) of them already on the list. | |
| 950 This way, we ensure that an object that gets freed will | |
| 951 remain free for the next 1000 (or whatever) times that | |
| 440 | 952 an object of that type is allocated. */ |
| 428 | 953 |
| 954 #ifndef MALLOC_OVERHEAD | |
| 955 #ifdef GNU_MALLOC | |
| 956 #define MALLOC_OVERHEAD 0 | |
| 957 #elif defined (rcheck) | |
| 958 #define MALLOC_OVERHEAD 20 | |
| 959 #else | |
| 960 #define MALLOC_OVERHEAD 8 | |
| 961 #endif | |
| 962 #endif /* MALLOC_OVERHEAD */ | |
| 963 | |
| 964 #if !defined(HAVE_MMAP) || defined(DOUG_LEA_MALLOC) | |
| 965 /* If we released our reserve (due to running out of memory), | |
| 966 and we have a fair amount free once again, | |
| 967 try to set aside another reserve in case we run out once more. | |
| 968 | |
| 969 This is called when a relocatable block is freed in ralloc.c. */ | |
| 970 void refill_memory_reserve (void); | |
| 971 void | |
| 442 | 972 refill_memory_reserve (void) |
| 428 | 973 { |
| 974 if (breathing_space == 0) | |
| 975 breathing_space = (char *) malloc (4096 - MALLOC_OVERHEAD); | |
| 976 } | |
| 977 #endif | |
| 978 | |
| 979 #ifdef ALLOC_NO_POOLS | |
| 980 # define TYPE_ALLOC_SIZE(type, structtype) 1 | |
| 981 #else | |
| 982 # define TYPE_ALLOC_SIZE(type, structtype) \ | |
| 983 ((2048 - MALLOC_OVERHEAD - sizeof (struct type##_block *)) \ | |
| 984 / sizeof (structtype)) | |
| 985 #endif /* ALLOC_NO_POOLS */ | |
| 986 | |
| 987 #define DECLARE_FIXED_TYPE_ALLOC(type, structtype) \ | |
| 988 \ | |
| 989 struct type##_block \ | |
| 990 { \ | |
| 991 struct type##_block *prev; \ | |
| 992 structtype block[TYPE_ALLOC_SIZE (type, structtype)]; \ | |
| 993 }; \ | |
| 994 \ | |
| 995 static struct type##_block *current_##type##_block; \ | |
| 996 static int current_##type##_block_index; \ | |
| 997 \ | |
| 454 | 998 static Lisp_Free *type##_free_list; \ |
| 999 static Lisp_Free *type##_free_list_tail; \ | |
| 428 | 1000 \ |
| 1001 static void \ | |
| 1002 init_##type##_alloc (void) \ | |
| 1003 { \ | |
| 1004 current_##type##_block = 0; \ | |
| 1005 current_##type##_block_index = \ | |
| 1006 countof (current_##type##_block->block); \ | |
| 1007 type##_free_list = 0; \ | |
| 1008 type##_free_list_tail = 0; \ | |
| 1009 } \ | |
| 1010 \ | |
| 1011 static int gc_count_num_##type##_in_use; \ | |
| 1012 static int gc_count_num_##type##_freelist | |
| 1013 | |
| 1014 #define ALLOCATE_FIXED_TYPE_FROM_BLOCK(type, result) do { \ | |
| 1015 if (current_##type##_block_index \ | |
| 1016 == countof (current_##type##_block->block)) \ | |
| 1017 { \ | |
| 1018 struct type##_block *AFTFB_new = (struct type##_block *) \ | |
| 1019 allocate_lisp_storage (sizeof (struct type##_block)); \ | |
| 1020 AFTFB_new->prev = current_##type##_block; \ | |
| 1021 current_##type##_block = AFTFB_new; \ | |
| 1022 current_##type##_block_index = 0; \ | |
| 1023 } \ | |
| 1024 (result) = \ | |
| 1025 &(current_##type##_block->block[current_##type##_block_index++]); \ | |
| 1026 } while (0) | |
| 1027 | |
| 1028 /* Allocate an instance of a type that is stored in blocks. | |
| 1029 TYPE is the "name" of the type, STRUCTTYPE is the corresponding | |
| 1030 structure type. */ | |
| 1031 | |
| 1032 #ifdef ERROR_CHECK_GC | |
| 1033 | |
| 1034 /* Note: if you get crashes in this function, suspect incorrect calls | |
| 1035 to free_cons() and friends. This happened once because the cons | |
| 1036 cell was not GC-protected and was getting collected before | |
| 1037 free_cons() was called. */ | |
| 1038 | |
| 454 | 1039 #define ALLOCATE_FIXED_TYPE_1(type, structtype, result) do { \ |
| 1040 if (gc_count_num_##type##_freelist > \ | |
| 1041 MINIMUM_ALLOWED_FIXED_TYPE_CELLS_##type) \ | |
| 1042 { \ | |
| 1043 result = (structtype *) type##_free_list; \ | |
| 1204 | 1044 assert (LRECORD_FREE_P (result)); \ |
| 1045 /* Before actually using the chain pointer, we complement \ | |
| 1046 all its bits; see PUT_FIXED_TYPE_ON_FREE_LIST(). */ \ | |
| 454 | 1047 type##_free_list = (Lisp_Free *) \ |
| 1048 (~ (EMACS_UINT) (type##_free_list->chain)); \ | |
| 1049 gc_count_num_##type##_freelist--; \ | |
| 1050 } \ | |
| 1051 else \ | |
| 1052 ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result); \ | |
| 1053 MARK_LRECORD_AS_NOT_FREE (result); \ | |
| 428 | 1054 } while (0) |
| 1055 | |
| 1056 #else /* !ERROR_CHECK_GC */ | |
| 1057 | |
| 454 | 1058 #define ALLOCATE_FIXED_TYPE_1(type, structtype, result) do { \ |
| 428 | 1059 if (type##_free_list) \ |
| 1060 { \ | |
| 454 | 1061 result = (structtype *) type##_free_list; \ |
| 1062 type##_free_list = type##_free_list->chain; \ | |
| 428 | 1063 } \ |
| 1064 else \ | |
| 1065 ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result); \ | |
| 454 | 1066 MARK_LRECORD_AS_NOT_FREE (result); \ |
| 428 | 1067 } while (0) |
| 1068 | |
| 1069 #endif /* !ERROR_CHECK_GC */ | |
| 1070 | |
| 454 | 1071 |
| 428 | 1072 #define ALLOCATE_FIXED_TYPE(type, structtype, result) \ |
| 1073 do \ | |
| 1074 { \ | |
| 1075 ALLOCATE_FIXED_TYPE_1 (type, structtype, result); \ | |
| 1076 INCREMENT_CONS_COUNTER (sizeof (structtype), #type); \ | |
| 1077 } while (0) | |
| 1078 | |
| 1079 #define NOSEEUM_ALLOCATE_FIXED_TYPE(type, structtype, result) \ | |
| 1080 do \ | |
| 1081 { \ | |
| 1082 ALLOCATE_FIXED_TYPE_1 (type, structtype, result); \ | |
| 1083 NOSEEUM_INCREMENT_CONS_COUNTER (sizeof (structtype), #type); \ | |
| 1084 } while (0) | |
| 1085 | |
| 454 | 1086 |
| 1087 /* Lisp_Free is the type to represent a free list member inside a frob | |
| 1088 block of any lisp object type. */ | |
| 1089 typedef struct Lisp_Free | |
| 1090 { | |
| 1091 struct lrecord_header lheader; | |
| 1092 struct Lisp_Free *chain; | |
| 1093 } Lisp_Free; | |
| 1094 | |
| 1095 #define LRECORD_FREE_P(ptr) \ | |
| 771 | 1096 (((struct lrecord_header *) ptr)->type == lrecord_type_free) |
| 454 | 1097 |
| 1098 #define MARK_LRECORD_AS_FREE(ptr) \ | |
| 771 | 1099 ((void) (((struct lrecord_header *) ptr)->type = lrecord_type_free)) |
| 454 | 1100 |
| 1101 #ifdef ERROR_CHECK_GC | |
| 1102 #define MARK_LRECORD_AS_NOT_FREE(ptr) \ | |
| 771 | 1103 ((void) (((struct lrecord_header *) ptr)->type = lrecord_type_undefined)) |
| 428 | 1104 #else |
| 454 | 1105 #define MARK_LRECORD_AS_NOT_FREE(ptr) DO_NOTHING |
| 428 | 1106 #endif |
| 1107 | |
| 1108 #ifdef ERROR_CHECK_GC | |
| 1109 | |
| 454 | 1110 #define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr) do { \ |
| 1111 if (type##_free_list_tail) \ | |
| 1112 { \ | |
| 1113 /* When we store the chain pointer, we complement all \ | |
| 1114 its bits; this should significantly increase its \ | |
| 1115 bogosity in case someone tries to use the value, and \ | |
| 1116 should make us crash faster if someone overwrites the \ | |
| 1117 pointer because when it gets un-complemented in \ | |
| 1118 ALLOCATED_FIXED_TYPE(), the resulting pointer will be \ | |
| 1119 extremely bogus. */ \ | |
| 1120 type##_free_list_tail->chain = \ | |
| 1121 (Lisp_Free *) ~ (EMACS_UINT) (ptr); \ | |
| 1122 } \ | |
| 1123 else \ | |
| 1124 type##_free_list = (Lisp_Free *) (ptr); \ | |
| 1125 type##_free_list_tail = (Lisp_Free *) (ptr); \ | |
| 1126 } while (0) | |
| 428 | 1127 |
| 1128 #else /* !ERROR_CHECK_GC */ | |
| 1129 | |
| 454 | 1130 #define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr) do { \ |
| 1131 ((Lisp_Free *) (ptr))->chain = type##_free_list; \ | |
| 1132 type##_free_list = (Lisp_Free *) (ptr); \ | |
| 1133 } while (0) \ | |
| 428 | 1134 |
| 1135 #endif /* !ERROR_CHECK_GC */ | |
| 1136 | |
| 1137 /* TYPE and STRUCTTYPE are the same as in ALLOCATE_FIXED_TYPE(). */ | |
| 1138 | |
| 1139 #define FREE_FIXED_TYPE(type, structtype, ptr) do { \ | |
| 1140 structtype *FFT_ptr = (ptr); \ | |
| 1204 | 1141 gc_checking_assert (!LRECORD_FREE_P (FFT_ptr)); \ |
| 2367 | 1142 gc_checking_assert (!DUMPEDP (FFT_ptr)); \ |
| 428 | 1143 ADDITIONAL_FREE_##type (FFT_ptr); \ |
| 1144 deadbeef_memory (FFT_ptr, sizeof (structtype)); \ | |
| 1145 PUT_FIXED_TYPE_ON_FREE_LIST (type, structtype, FFT_ptr); \ | |
| 454 | 1146 MARK_LRECORD_AS_FREE (FFT_ptr); \ |
| 428 | 1147 } while (0) |
| 1148 | |
| 1149 /* Like FREE_FIXED_TYPE() but used when we are explicitly | |
| 1150 freeing a structure through free_cons(), free_marker(), etc. | |
| 1151 rather than through the normal process of sweeping. | |
| 1152 We attempt to undo the changes made to the allocation counters | |
| 1153 as a result of this structure being allocated. This is not | |
| 1154 completely necessary but helps keep things saner: e.g. this way, | |
| 1155 repeatedly allocating and freeing a cons will not result in | |
| 1156 the consing-since-gc counter advancing, which would cause a GC | |
| 1204 | 1157 and somewhat defeat the purpose of explicitly freeing. |
| 1158 | |
| 1159 We also disable this mechanism entirely when ALLOC_NO_POOLS is | |
| 1160 set, which is used for Purify and the like. */ | |
| 1161 | |
| 1162 #ifndef ALLOC_NO_POOLS | |
| 428 | 1163 #define FREE_FIXED_TYPE_WHEN_NOT_IN_GC(type, structtype, ptr) \ |
| 1164 do { FREE_FIXED_TYPE (type, structtype, ptr); \ | |
| 1165 DECREMENT_CONS_COUNTER (sizeof (structtype)); \ | |
| 1166 gc_count_num_##type##_freelist++; \ | |
| 1167 } while (0) | |
| 1204 | 1168 #else |
| 1169 #define FREE_FIXED_TYPE_WHEN_NOT_IN_GC(type, structtype, ptr) | |
| 1170 #endif | |
| 2720 | 1171 #endif /* not MC_ALLOC */ |
| 428 | 1172 |
| 1173 | |
| 1174 | |
| 1175 /************************************************************************/ | |
| 1176 /* Cons allocation */ | |
| 1177 /************************************************************************/ | |
| 1178 | |
| 2720 | 1179 #ifndef MC_ALLOC |
| 440 | 1180 DECLARE_FIXED_TYPE_ALLOC (cons, Lisp_Cons); |
| 428 | 1181 /* conses are used and freed so often that we set this really high */ |
| 1182 /* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 20000 */ | |
| 1183 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 2000 | |
| 2720 | 1184 #endif /* not MC_ALLOC */ |
| 428 | 1185 |
| 1186 static Lisp_Object | |
| 1187 mark_cons (Lisp_Object obj) | |
| 1188 { | |
| 1189 if (NILP (XCDR (obj))) | |
| 1190 return XCAR (obj); | |
| 1191 | |
| 1192 mark_object (XCAR (obj)); | |
| 1193 return XCDR (obj); | |
| 1194 } | |
| 1195 | |
| 1196 static int | |
| 1197 cons_equal (Lisp_Object ob1, Lisp_Object ob2, int depth) | |
| 1198 { | |
| 442 | 1199 depth++; |
| 1200 while (internal_equal (XCAR (ob1), XCAR (ob2), depth)) | |
| 428 | 1201 { |
| 1202 ob1 = XCDR (ob1); | |
| 1203 ob2 = XCDR (ob2); | |
| 1204 if (! CONSP (ob1) || ! CONSP (ob2)) | |
| 442 | 1205 return internal_equal (ob1, ob2, depth); |
| 428 | 1206 } |
| 1207 return 0; | |
| 1208 } | |
| 1209 | |
| 1204 | 1210 static const struct memory_description cons_description[] = { |
| 853 | 1211 { XD_LISP_OBJECT, offsetof (Lisp_Cons, car_) }, |
| 1212 { XD_LISP_OBJECT, offsetof (Lisp_Cons, cdr_) }, | |
| 428 | 1213 { XD_END } |
| 1214 }; | |
| 1215 | |
| 934 | 1216 DEFINE_BASIC_LRECORD_IMPLEMENTATION ("cons", cons, |
| 1217 1, /*dumpable-flag*/ | |
| 1218 mark_cons, print_cons, 0, | |
| 1219 cons_equal, | |
| 1220 /* | |
| 1221 * No `hash' method needed. | |
| 1222 * internal_hash knows how to | |
| 1223 * handle conses. | |
| 1224 */ | |
| 1225 0, | |
| 1226 cons_description, | |
| 1227 Lisp_Cons); | |
| 428 | 1228 |
| 1229 DEFUN ("cons", Fcons, 2, 2, 0, /* | |
| 1230 Create a new cons, give it CAR and CDR as components, and return it. | |
| 1231 */ | |
| 1232 (car, cdr)) | |
| 1233 { | |
| 1234 /* This cannot GC. */ | |
| 1235 Lisp_Object val; | |
| 440 | 1236 Lisp_Cons *c; |
| 1237 | |
| 2720 | 1238 #ifdef MC_ALLOC |
| 1239 c = alloc_lrecord_type (Lisp_Cons, &lrecord_cons); | |
| 1240 #else /* not MC_ALLOC */ | |
| 440 | 1241 ALLOCATE_FIXED_TYPE (cons, Lisp_Cons, c); |
| 442 | 1242 set_lheader_implementation (&c->lheader, &lrecord_cons); |
| 2720 | 1243 #endif /* not MC_ALLOC */ |
| 793 | 1244 val = wrap_cons (c); |
| 853 | 1245 XSETCAR (val, car); |
| 1246 XSETCDR (val, cdr); | |
| 428 | 1247 return val; |
| 1248 } | |
| 1249 | |
| 1250 /* This is identical to Fcons() but it used for conses that we're | |
| 1251 going to free later, and is useful when trying to track down | |
| 1252 "real" consing. */ | |
| 1253 Lisp_Object | |
| 1254 noseeum_cons (Lisp_Object car, Lisp_Object cdr) | |
| 1255 { | |
| 1256 Lisp_Object val; | |
| 440 | 1257 Lisp_Cons *c; |
| 1258 | |
| 2720 | 1259 #ifdef MC_ALLOC |
| 1260 c = noseeum_alloc_lrecord_type (Lisp_Cons, &lrecord_cons); | |
| 1261 #else /* not MC_ALLOC */ | |
| 440 | 1262 NOSEEUM_ALLOCATE_FIXED_TYPE (cons, Lisp_Cons, c); |
| 442 | 1263 set_lheader_implementation (&c->lheader, &lrecord_cons); |
| 2720 | 1264 #endif /* not MC_ALLOC */ |
| 793 | 1265 val = wrap_cons (c); |
| 428 | 1266 XCAR (val) = car; |
| 1267 XCDR (val) = cdr; | |
| 1268 return val; | |
| 1269 } | |
| 1270 | |
| 1271 DEFUN ("list", Flist, 0, MANY, 0, /* | |
| 1272 Return a newly created list with specified arguments as elements. | |
| 1273 Any number of arguments, even zero arguments, are allowed. | |
| 1274 */ | |
| 1275 (int nargs, Lisp_Object *args)) | |
| 1276 { | |
| 1277 Lisp_Object val = Qnil; | |
| 1278 Lisp_Object *argp = args + nargs; | |
| 1279 | |
| 1280 while (argp > args) | |
| 1281 val = Fcons (*--argp, val); | |
| 1282 return val; | |
| 1283 } | |
| 1284 | |
| 1285 Lisp_Object | |
| 1286 list1 (Lisp_Object obj0) | |
| 1287 { | |
| 1288 /* This cannot GC. */ | |
| 1289 return Fcons (obj0, Qnil); | |
| 1290 } | |
| 1291 | |
| 1292 Lisp_Object | |
| 1293 list2 (Lisp_Object obj0, Lisp_Object obj1) | |
| 1294 { | |
| 1295 /* This cannot GC. */ | |
| 1296 return Fcons (obj0, Fcons (obj1, Qnil)); | |
| 1297 } | |
| 1298 | |
| 1299 Lisp_Object | |
| 1300 list3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2) | |
| 1301 { | |
| 1302 /* This cannot GC. */ | |
| 1303 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Qnil))); | |
| 1304 } | |
| 1305 | |
| 1306 Lisp_Object | |
| 1307 cons3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2) | |
| 1308 { | |
| 1309 /* This cannot GC. */ | |
| 1310 return Fcons (obj0, Fcons (obj1, obj2)); | |
| 1311 } | |
| 1312 | |
| 1313 Lisp_Object | |
| 1314 acons (Lisp_Object key, Lisp_Object value, Lisp_Object alist) | |
| 1315 { | |
| 1316 return Fcons (Fcons (key, value), alist); | |
| 1317 } | |
| 1318 | |
| 1319 Lisp_Object | |
| 1320 list4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3) | |
| 1321 { | |
| 1322 /* This cannot GC. */ | |
| 1323 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Qnil)))); | |
| 1324 } | |
| 1325 | |
| 1326 Lisp_Object | |
| 1327 list5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3, | |
| 1328 Lisp_Object obj4) | |
| 1329 { | |
| 1330 /* This cannot GC. */ | |
| 1331 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Qnil))))); | |
| 1332 } | |
| 1333 | |
| 1334 Lisp_Object | |
| 1335 list6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3, | |
| 1336 Lisp_Object obj4, Lisp_Object obj5) | |
| 1337 { | |
| 1338 /* This cannot GC. */ | |
| 1339 return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Fcons (obj5, Qnil)))))); | |
| 1340 } | |
| 1341 | |
| 1342 DEFUN ("make-list", Fmake_list, 2, 2, 0, /* | |
| 444 | 1343 Return a new list of length LENGTH, with each element being OBJECT. |
| 428 | 1344 */ |
| 444 | 1345 (length, object)) |
| 428 | 1346 { |
| 1347 CHECK_NATNUM (length); | |
| 1348 | |
| 1349 { | |
| 1350 Lisp_Object val = Qnil; | |
| 647 | 1351 EMACS_INT size = XINT (length); |
| 428 | 1352 |
| 1353 while (size--) | |
| 444 | 1354 val = Fcons (object, val); |
| 428 | 1355 return val; |
| 1356 } | |
| 1357 } | |
| 1358 | |
| 1359 | |
| 1360 /************************************************************************/ | |
| 1361 /* Float allocation */ | |
| 1362 /************************************************************************/ | |
| 1363 | |
| 1983 | 1364 /*** With enhanced number support, these are short floats */ |
| 1365 | |
| 2720 | 1366 #ifndef MC_ALLOC |
| 440 | 1367 DECLARE_FIXED_TYPE_ALLOC (float, Lisp_Float); |
| 428 | 1368 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_float 1000 |
| 2720 | 1369 #endif /* not MC_ALLOC */ |
| 428 | 1370 |
| 1371 Lisp_Object | |
| 1372 make_float (double float_value) | |
| 1373 { | |
| 440 | 1374 Lisp_Float *f; |
| 1375 | |
| 2720 | 1376 #ifdef MC_ALLOC |
| 1377 f = alloc_lrecord_type (Lisp_Float, &lrecord_float); | |
| 1378 #else /* not MC_ALLOC */ | |
| 440 | 1379 ALLOCATE_FIXED_TYPE (float, Lisp_Float, f); |
| 1380 | |
| 1381 /* Avoid dump-time `uninitialized memory read' purify warnings. */ | |
| 1382 if (sizeof (struct lrecord_header) + sizeof (double) != sizeof (*f)) | |
| 1383 xzero (*f); | |
| 2720 | 1384 #endif /* not MC_ALLOC */ |
| 440 | 1385 |
| 442 | 1386 set_lheader_implementation (&f->lheader, &lrecord_float); |
| 428 | 1387 float_data (f) = float_value; |
| 793 | 1388 return wrap_float (f); |
| 428 | 1389 } |
| 1390 | |
| 1391 | |
| 1392 /************************************************************************/ | |
| 1983 | 1393 /* Enhanced number allocation */ |
| 1394 /************************************************************************/ | |
| 1395 | |
| 1396 /*** Bignum ***/ | |
| 1397 #ifdef HAVE_BIGNUM | |
| 2720 | 1398 #ifndef MC_ALLOC |
| 1983 | 1399 DECLARE_FIXED_TYPE_ALLOC (bignum, Lisp_Bignum); |
| 1400 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_bignum 250 | |
| 2720 | 1401 #endif /* not MC_ALLOC */ |
| 1983 | 1402 |
| 1403 /* WARNING: This function returns a bignum even if its argument fits into a | |
| 1404 fixnum. See Fcanonicalize_number(). */ | |
| 1405 Lisp_Object | |
| 1406 make_bignum (long bignum_value) | |
| 1407 { | |
| 1408 Lisp_Bignum *b; | |
| 1409 | |
| 2720 | 1410 #ifdef MC_ALLOC |
| 1411 b = alloc_lrecord_type (Lisp_Bignum, &lrecord_bignum); | |
| 1412 #else /* not MC_ALLOC */ | |
| 1983 | 1413 ALLOCATE_FIXED_TYPE (bignum, Lisp_Bignum, b); |
| 1414 set_lheader_implementation (&b->lheader, &lrecord_bignum); | |
| 2720 | 1415 #endif /* not MC_ALLOC */ |
| 1983 | 1416 bignum_init (bignum_data (b)); |
| 1417 bignum_set_long (bignum_data (b), bignum_value); | |
| 1418 return wrap_bignum (b); | |
| 1419 } | |
| 1420 | |
| 1421 /* WARNING: This function returns a bignum even if its argument fits into a | |
| 1422 fixnum. See Fcanonicalize_number(). */ | |
| 1423 Lisp_Object | |
| 1424 make_bignum_bg (bignum bg) | |
| 1425 { | |
| 1426 Lisp_Bignum *b; | |
| 1427 | |
| 2720 | 1428 #ifdef MC_ALLOC |
| 1429 b = alloc_lrecord_type (Lisp_Bignum, &lrecord_bignum); | |
| 1430 #else /* not MC_ALLOC */ | |
| 1983 | 1431 ALLOCATE_FIXED_TYPE (bignum, Lisp_Bignum, b); |
| 1432 set_lheader_implementation (&b->lheader, &lrecord_bignum); | |
| 2720 | 1433 #endif /* not MC_ALLOC */ |
| 1983 | 1434 bignum_init (bignum_data (b)); |
| 1435 bignum_set (bignum_data (b), bg); | |
| 1436 return wrap_bignum (b); | |
| 1437 } | |
| 1438 #endif /* HAVE_BIGNUM */ | |
| 1439 | |
| 1440 /*** Ratio ***/ | |
| 1441 #ifdef HAVE_RATIO | |
| 2720 | 1442 #ifndef MC_ALLOC |
| 1983 | 1443 DECLARE_FIXED_TYPE_ALLOC (ratio, Lisp_Ratio); |
| 1444 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_ratio 250 | |
| 2720 | 1445 #endif /* not MC_ALLOC */ |
| 1983 | 1446 |
| 1447 Lisp_Object | |
| 1448 make_ratio (long numerator, unsigned long denominator) | |
| 1449 { | |
| 1450 Lisp_Ratio *r; | |
| 1451 | |
| 2720 | 1452 #ifdef MC_ALLOC |
| 1453 r = alloc_lrecord_type (Lisp_Ratio, &lrecord_ratio); | |
| 1454 #else /* not MC_ALLOC */ | |
| 1983 | 1455 ALLOCATE_FIXED_TYPE (ratio, Lisp_Ratio, r); |
| 1456 set_lheader_implementation (&r->lheader, &lrecord_ratio); | |
| 2720 | 1457 #endif /* not MC_ALLOC */ |
| 1983 | 1458 ratio_init (ratio_data (r)); |
| 1459 ratio_set_long_ulong (ratio_data (r), numerator, denominator); | |
| 1460 ratio_canonicalize (ratio_data (r)); | |
| 1461 return wrap_ratio (r); | |
| 1462 } | |
| 1463 | |
| 1464 Lisp_Object | |
| 1465 make_ratio_bg (bignum numerator, bignum denominator) | |
| 1466 { | |
| 1467 Lisp_Ratio *r; | |
| 1468 | |
| 2720 | 1469 #ifdef MC_ALLOC |
| 1470 r = alloc_lrecord_type (Lisp_Ratio, &lrecord_ratio); | |
| 1471 #else /* not MC_ALLOC */ | |
| 1983 | 1472 ALLOCATE_FIXED_TYPE (ratio, Lisp_Ratio, r); |
| 1473 set_lheader_implementation (&r->lheader, &lrecord_ratio); | |
| 2720 | 1474 #endif /* not MC_ALLOC */ |
| 1983 | 1475 ratio_init (ratio_data (r)); |
| 1476 ratio_set_bignum_bignum (ratio_data (r), numerator, denominator); | |
| 1477 ratio_canonicalize (ratio_data (r)); | |
| 1478 return wrap_ratio (r); | |
| 1479 } | |
| 1480 | |
| 1481 Lisp_Object | |
| 1482 make_ratio_rt (ratio rat) | |
| 1483 { | |
| 1484 Lisp_Ratio *r; | |
| 1485 | |
| 2720 | 1486 #ifdef MC_ALLOC |
| 1487 r = alloc_lrecord_type (Lisp_Ratio, &lrecord_ratio); | |
| 1488 #else /* not MC_ALLOC */ | |
| 1983 | 1489 ALLOCATE_FIXED_TYPE (ratio, Lisp_Ratio, r); |
| 1490 set_lheader_implementation (&r->lheader, &lrecord_ratio); | |
| 2720 | 1491 #endif /* not MC_ALLOC */ |
| 1983 | 1492 ratio_init (ratio_data (r)); |
| 1493 ratio_set (ratio_data (r), rat); | |
| 1494 return wrap_ratio (r); | |
| 1495 } | |
| 1496 #endif /* HAVE_RATIO */ | |
| 1497 | |
| 1498 /*** Bigfloat ***/ | |
| 1499 #ifdef HAVE_BIGFLOAT | |
| 2720 | 1500 #ifndef MC_ALLOC |
| 1983 | 1501 DECLARE_FIXED_TYPE_ALLOC (bigfloat, Lisp_Bigfloat); |
| 1502 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_bigfloat 250 | |
| 2720 | 1503 #endif /* not MC_ALLOC */ |
| 1983 | 1504 |
| 1505 /* This function creates a bigfloat with the default precision if the | |
| 1506 PRECISION argument is zero. */ | |
| 1507 Lisp_Object | |
| 1508 make_bigfloat (double float_value, unsigned long precision) | |
| 1509 { | |
| 1510 Lisp_Bigfloat *f; | |
| 1511 | |
| 2720 | 1512 #ifdef MC_ALLOC |
| 1513 f = alloc_lrecord_type (Lisp_Bigfloat, &lrecord_bigfloat); | |
| 1514 #else /* not MC_ALLOC */ | |
| 1983 | 1515 ALLOCATE_FIXED_TYPE (bigfloat, Lisp_Bigfloat, f); |
| 1516 set_lheader_implementation (&f->lheader, &lrecord_bigfloat); | |
| 2720 | 1517 #endif /* not MC_ALLOC */ |
| 1983 | 1518 if (precision == 0UL) |
| 1519 bigfloat_init (bigfloat_data (f)); | |
| 1520 else | |
| 1521 bigfloat_init_prec (bigfloat_data (f), precision); | |
| 1522 bigfloat_set_double (bigfloat_data (f), float_value); | |
| 1523 return wrap_bigfloat (f); | |
| 1524 } | |
| 1525 | |
| 1526 /* This function creates a bigfloat with the precision of its argument */ | |
| 1527 Lisp_Object | |
| 1528 make_bigfloat_bf (bigfloat float_value) | |
| 1529 { | |
| 1530 Lisp_Bigfloat *f; | |
| 1531 | |
| 2720 | 1532 #ifdef MC_ALLOC |
| 1533 f = alloc_lrecord_type (Lisp_Bigfloat, &lrecord_bigfloat); | |
| 1534 #else /* not MC_ALLOC */ | |
| 1983 | 1535 ALLOCATE_FIXED_TYPE (bigfloat, Lisp_Bigfloat, f); |
| 1536 set_lheader_implementation (&f->lheader, &lrecord_bigfloat); | |
| 2720 | 1537 #endif /* not MC_ALLOC */ |
| 1983 | 1538 bigfloat_init_prec (bigfloat_data (f), bigfloat_get_prec (float_value)); |
| 1539 bigfloat_set (bigfloat_data (f), float_value); | |
| 1540 return wrap_bigfloat (f); | |
| 1541 } | |
| 1542 #endif /* HAVE_BIGFLOAT */ | |
| 1543 | |
| 1544 /************************************************************************/ | |
| 428 | 1545 /* Vector allocation */ |
| 1546 /************************************************************************/ | |
| 1547 | |
| 1548 static Lisp_Object | |
| 1549 mark_vector (Lisp_Object obj) | |
| 1550 { | |
| 1551 Lisp_Vector *ptr = XVECTOR (obj); | |
| 1552 int len = vector_length (ptr); | |
| 1553 int i; | |
| 1554 | |
| 1555 for (i = 0; i < len - 1; i++) | |
| 1556 mark_object (ptr->contents[i]); | |
| 1557 return (len > 0) ? ptr->contents[len - 1] : Qnil; | |
| 1558 } | |
| 1559 | |
| 665 | 1560 static Bytecount |
| 442 | 1561 size_vector (const void *lheader) |
| 428 | 1562 { |
| 456 | 1563 return FLEXIBLE_ARRAY_STRUCT_SIZEOF (Lisp_Vector, Lisp_Object, contents, |
| 442 | 1564 ((Lisp_Vector *) lheader)->size); |
| 428 | 1565 } |
| 1566 | |
| 1567 static int | |
| 1568 vector_equal (Lisp_Object obj1, Lisp_Object obj2, int depth) | |
| 1569 { | |
| 1570 int len = XVECTOR_LENGTH (obj1); | |
| 1571 if (len != XVECTOR_LENGTH (obj2)) | |
| 1572 return 0; | |
| 1573 | |
| 1574 { | |
| 1575 Lisp_Object *ptr1 = XVECTOR_DATA (obj1); | |
| 1576 Lisp_Object *ptr2 = XVECTOR_DATA (obj2); | |
| 1577 while (len--) | |
| 1578 if (!internal_equal (*ptr1++, *ptr2++, depth + 1)) | |
| 1579 return 0; | |
| 1580 } | |
| 1581 return 1; | |
| 1582 } | |
| 1583 | |
| 665 | 1584 static Hashcode |
| 442 | 1585 vector_hash (Lisp_Object obj, int depth) |
| 1586 { | |
| 1587 return HASH2 (XVECTOR_LENGTH (obj), | |
| 1588 internal_array_hash (XVECTOR_DATA (obj), | |
| 1589 XVECTOR_LENGTH (obj), | |
| 1590 depth + 1)); | |
| 1591 } | |
| 1592 | |
| 1204 | 1593 static const struct memory_description vector_description[] = { |
| 440 | 1594 { XD_LONG, offsetof (Lisp_Vector, size) }, |
| 1595 { XD_LISP_OBJECT_ARRAY, offsetof (Lisp_Vector, contents), XD_INDIRECT(0, 0) }, | |
| 428 | 1596 { XD_END } |
| 1597 }; | |
| 1598 | |
| 1204 | 1599 DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION ("vector", vector, |
| 1600 1, /*dumpable-flag*/ | |
| 1601 mark_vector, print_vector, 0, | |
| 1602 vector_equal, | |
| 1603 vector_hash, | |
| 1604 vector_description, | |
| 1605 size_vector, Lisp_Vector); | |
| 428 | 1606 /* #### should allocate `small' vectors from a frob-block */ |
| 1607 static Lisp_Vector * | |
| 665 | 1608 make_vector_internal (Elemcount sizei) |
| 428 | 1609 { |
| 1204 | 1610 /* no `next' field; we use lcrecords */ |
| 665 | 1611 Bytecount sizem = FLEXIBLE_ARRAY_STRUCT_SIZEOF (Lisp_Vector, Lisp_Object, |
| 1204 | 1612 contents, sizei); |
| 1613 Lisp_Vector *p = | |
| 2720 | 1614 #ifdef MC_ALLOC |
| 1615 (Lisp_Vector *) alloc_lrecord (sizem, &lrecord_vector); | |
| 1616 #else /* not MC_ALLOC */ | |
| 1204 | 1617 (Lisp_Vector *) basic_alloc_lcrecord (sizem, &lrecord_vector); |
| 2720 | 1618 #endif /* not MC_ALLOC */ |
| 428 | 1619 |
| 1620 p->size = sizei; | |
| 1621 return p; | |
| 1622 } | |
| 1623 | |
| 1624 Lisp_Object | |
| 665 | 1625 make_vector (Elemcount length, Lisp_Object object) |
| 428 | 1626 { |
| 1627 Lisp_Vector *vecp = make_vector_internal (length); | |
| 1628 Lisp_Object *p = vector_data (vecp); | |
| 1629 | |
| 1630 while (length--) | |
| 444 | 1631 *p++ = object; |
| 428 | 1632 |
| 793 | 1633 return wrap_vector (vecp); |
| 428 | 1634 } |
| 1635 | |
| 1636 DEFUN ("make-vector", Fmake_vector, 2, 2, 0, /* | |
| 444 | 1637 Return a new vector of length LENGTH, with each element being OBJECT. |
| 428 | 1638 See also the function `vector'. |
| 1639 */ | |
| 444 | 1640 (length, object)) |
| 428 | 1641 { |
| 1642 CONCHECK_NATNUM (length); | |
| 444 | 1643 return make_vector (XINT (length), object); |
| 428 | 1644 } |
| 1645 | |
| 1646 DEFUN ("vector", Fvector, 0, MANY, 0, /* | |
| 1647 Return a newly created vector with specified arguments as elements. | |
| 1648 Any number of arguments, even zero arguments, are allowed. | |
| 1649 */ | |
| 1650 (int nargs, Lisp_Object *args)) | |
| 1651 { | |
| 1652 Lisp_Vector *vecp = make_vector_internal (nargs); | |
| 1653 Lisp_Object *p = vector_data (vecp); | |
| 1654 | |
| 1655 while (nargs--) | |
| 1656 *p++ = *args++; | |
| 1657 | |
| 793 | 1658 return wrap_vector (vecp); |
| 428 | 1659 } |
| 1660 | |
| 1661 Lisp_Object | |
| 1662 vector1 (Lisp_Object obj0) | |
| 1663 { | |
| 1664 return Fvector (1, &obj0); | |
| 1665 } | |
| 1666 | |
| 1667 Lisp_Object | |
| 1668 vector2 (Lisp_Object obj0, Lisp_Object obj1) | |
| 1669 { | |
| 1670 Lisp_Object args[2]; | |
| 1671 args[0] = obj0; | |
| 1672 args[1] = obj1; | |
| 1673 return Fvector (2, args); | |
| 1674 } | |
| 1675 | |
| 1676 Lisp_Object | |
| 1677 vector3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2) | |
| 1678 { | |
| 1679 Lisp_Object args[3]; | |
| 1680 args[0] = obj0; | |
| 1681 args[1] = obj1; | |
| 1682 args[2] = obj2; | |
| 1683 return Fvector (3, args); | |
| 1684 } | |
| 1685 | |
| 1686 #if 0 /* currently unused */ | |
| 1687 | |
| 1688 Lisp_Object | |
| 1689 vector4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1690 Lisp_Object obj3) | |
| 1691 { | |
| 1692 Lisp_Object args[4]; | |
| 1693 args[0] = obj0; | |
| 1694 args[1] = obj1; | |
| 1695 args[2] = obj2; | |
| 1696 args[3] = obj3; | |
| 1697 return Fvector (4, args); | |
| 1698 } | |
| 1699 | |
| 1700 Lisp_Object | |
| 1701 vector5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1702 Lisp_Object obj3, Lisp_Object obj4) | |
| 1703 { | |
| 1704 Lisp_Object args[5]; | |
| 1705 args[0] = obj0; | |
| 1706 args[1] = obj1; | |
| 1707 args[2] = obj2; | |
| 1708 args[3] = obj3; | |
| 1709 args[4] = obj4; | |
| 1710 return Fvector (5, args); | |
| 1711 } | |
| 1712 | |
| 1713 Lisp_Object | |
| 1714 vector6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1715 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5) | |
| 1716 { | |
| 1717 Lisp_Object args[6]; | |
| 1718 args[0] = obj0; | |
| 1719 args[1] = obj1; | |
| 1720 args[2] = obj2; | |
| 1721 args[3] = obj3; | |
| 1722 args[4] = obj4; | |
| 1723 args[5] = obj5; | |
| 1724 return Fvector (6, args); | |
| 1725 } | |
| 1726 | |
| 1727 Lisp_Object | |
| 1728 vector7 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1729 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5, | |
| 1730 Lisp_Object obj6) | |
| 1731 { | |
| 1732 Lisp_Object args[7]; | |
| 1733 args[0] = obj0; | |
| 1734 args[1] = obj1; | |
| 1735 args[2] = obj2; | |
| 1736 args[3] = obj3; | |
| 1737 args[4] = obj4; | |
| 1738 args[5] = obj5; | |
| 1739 args[6] = obj6; | |
| 1740 return Fvector (7, args); | |
| 1741 } | |
| 1742 | |
| 1743 Lisp_Object | |
| 1744 vector8 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, | |
| 1745 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5, | |
| 1746 Lisp_Object obj6, Lisp_Object obj7) | |
| 1747 { | |
| 1748 Lisp_Object args[8]; | |
| 1749 args[0] = obj0; | |
| 1750 args[1] = obj1; | |
| 1751 args[2] = obj2; | |
| 1752 args[3] = obj3; | |
| 1753 args[4] = obj4; | |
| 1754 args[5] = obj5; | |
| 1755 args[6] = obj6; | |
| 1756 args[7] = obj7; | |
| 1757 return Fvector (8, args); | |
| 1758 } | |
| 1759 #endif /* unused */ | |
| 1760 | |
| 1761 /************************************************************************/ | |
| 1762 /* Bit Vector allocation */ | |
| 1763 /************************************************************************/ | |
| 1764 | |
| 1765 /* #### should allocate `small' bit vectors from a frob-block */ | |
| 440 | 1766 static Lisp_Bit_Vector * |
| 665 | 1767 make_bit_vector_internal (Elemcount sizei) |
| 428 | 1768 { |
| 1204 | 1769 /* no `next' field; we use lcrecords */ |
| 665 | 1770 Elemcount num_longs = BIT_VECTOR_LONG_STORAGE (sizei); |
| 1771 Bytecount sizem = FLEXIBLE_ARRAY_STRUCT_SIZEOF (Lisp_Bit_Vector, | |
| 1204 | 1772 unsigned long, |
| 1773 bits, num_longs); | |
| 1774 Lisp_Bit_Vector *p = (Lisp_Bit_Vector *) | |
| 2720 | 1775 #ifdef MC_ALLOC |
| 1776 alloc_lrecord (sizem, &lrecord_bit_vector); | |
| 1777 #else /* not MC_ALLOC */ | |
| 1204 | 1778 basic_alloc_lcrecord (sizem, &lrecord_bit_vector); |
| 2720 | 1779 #endif /* not MC_ALLOC */ |
| 428 | 1780 |
| 1781 bit_vector_length (p) = sizei; | |
| 1782 return p; | |
| 1783 } | |
| 1784 | |
| 1785 Lisp_Object | |
| 665 | 1786 make_bit_vector (Elemcount length, Lisp_Object bit) |
| 428 | 1787 { |
| 440 | 1788 Lisp_Bit_Vector *p = make_bit_vector_internal (length); |
| 665 | 1789 Elemcount num_longs = BIT_VECTOR_LONG_STORAGE (length); |
| 428 | 1790 |
| 444 | 1791 CHECK_BIT (bit); |
| 1792 | |
| 1793 if (ZEROP (bit)) | |
| 428 | 1794 memset (p->bits, 0, num_longs * sizeof (long)); |
| 1795 else | |
| 1796 { | |
| 665 | 1797 Elemcount bits_in_last = length & (LONGBITS_POWER_OF_2 - 1); |
| 428 | 1798 memset (p->bits, ~0, num_longs * sizeof (long)); |
| 1799 /* But we have to make sure that the unused bits in the | |
| 1800 last long are 0, so that equal/hash is easy. */ | |
| 1801 if (bits_in_last) | |
| 1802 p->bits[num_longs - 1] &= (1 << bits_in_last) - 1; | |
| 1803 } | |
| 1804 | |
| 793 | 1805 return wrap_bit_vector (p); |
| 428 | 1806 } |
| 1807 | |
| 1808 Lisp_Object | |
| 665 | 1809 make_bit_vector_from_byte_vector (unsigned char *bytevec, Elemcount length) |
| 428 | 1810 { |
| 665 | 1811 Elemcount i; |
| 428 | 1812 Lisp_Bit_Vector *p = make_bit_vector_internal (length); |
| 1813 | |
| 1814 for (i = 0; i < length; i++) | |
| 1815 set_bit_vector_bit (p, i, bytevec[i]); | |
| 1816 | |
| 793 | 1817 return wrap_bit_vector (p); |
| 428 | 1818 } |
| 1819 | |
| 1820 DEFUN ("make-bit-vector", Fmake_bit_vector, 2, 2, 0, /* | |
| 444 | 1821 Return a new bit vector of length LENGTH. with each bit set to BIT. |
| 1822 BIT must be one of the integers 0 or 1. See also the function `bit-vector'. | |
| 428 | 1823 */ |
| 444 | 1824 (length, bit)) |
| 428 | 1825 { |
| 1826 CONCHECK_NATNUM (length); | |
| 1827 | |
| 444 | 1828 return make_bit_vector (XINT (length), bit); |
| 428 | 1829 } |
| 1830 | |
| 1831 DEFUN ("bit-vector", Fbit_vector, 0, MANY, 0, /* | |
| 1832 Return a newly created bit vector with specified arguments as elements. | |
| 1833 Any number of arguments, even zero arguments, are allowed. | |
| 444 | 1834 Each argument must be one of the integers 0 or 1. |
| 428 | 1835 */ |
| 1836 (int nargs, Lisp_Object *args)) | |
| 1837 { | |
| 1838 int i; | |
| 1839 Lisp_Bit_Vector *p = make_bit_vector_internal (nargs); | |
| 1840 | |
| 1841 for (i = 0; i < nargs; i++) | |
| 1842 { | |
| 1843 CHECK_BIT (args[i]); | |
| 1844 set_bit_vector_bit (p, i, !ZEROP (args[i])); | |
| 1845 } | |
| 1846 | |
| 793 | 1847 return wrap_bit_vector (p); |
| 428 | 1848 } |
| 1849 | |
| 1850 | |
| 1851 /************************************************************************/ | |
| 1852 /* Compiled-function allocation */ | |
| 1853 /************************************************************************/ | |
| 1854 | |
| 2720 | 1855 #ifndef MC_ALLOC |
| 428 | 1856 DECLARE_FIXED_TYPE_ALLOC (compiled_function, Lisp_Compiled_Function); |
| 1857 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_compiled_function 1000 | |
| 2720 | 1858 #endif /* not MC_ALLOC */ |
| 428 | 1859 |
| 1860 static Lisp_Object | |
| 1861 make_compiled_function (void) | |
| 1862 { | |
| 1863 Lisp_Compiled_Function *f; | |
| 1864 | |
| 2720 | 1865 #ifdef MC_ALLOC |
| 1866 f = alloc_lrecord_type (Lisp_Compiled_Function, &lrecord_compiled_function); | |
| 1867 #else /* not MC_ALLOC */ | |
| 428 | 1868 ALLOCATE_FIXED_TYPE (compiled_function, Lisp_Compiled_Function, f); |
| 442 | 1869 set_lheader_implementation (&f->lheader, &lrecord_compiled_function); |
| 2720 | 1870 #endif /* not MC_ALLOC */ |
| 428 | 1871 |
| 1872 f->stack_depth = 0; | |
| 1873 f->specpdl_depth = 0; | |
| 1874 f->flags.documentationp = 0; | |
| 1875 f->flags.interactivep = 0; | |
| 1876 f->flags.domainp = 0; /* I18N3 */ | |
| 1877 f->instructions = Qzero; | |
| 1878 f->constants = Qzero; | |
| 1879 f->arglist = Qnil; | |
| 1739 | 1880 f->args = NULL; |
| 1881 f->max_args = f->min_args = f->args_in_array = 0; | |
| 428 | 1882 f->doc_and_interactive = Qnil; |
| 1883 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK | |
| 1884 f->annotated = Qnil; | |
| 1885 #endif | |
| 793 | 1886 return wrap_compiled_function (f); |
| 428 | 1887 } |
| 1888 | |
| 1889 DEFUN ("make-byte-code", Fmake_byte_code, 4, MANY, 0, /* | |
| 1890 Return a new compiled-function object. | |
| 1891 Usage: (arglist instructions constants stack-depth | |
| 1892 &optional doc-string interactive) | |
| 1893 Note that, unlike all other emacs-lisp functions, calling this with five | |
| 1894 arguments is NOT the same as calling it with six arguments, the last of | |
| 1895 which is nil. If the INTERACTIVE arg is specified as nil, then that means | |
| 1896 that this function was defined with `(interactive)'. If the arg is not | |
| 1897 specified, then that means the function is not interactive. | |
| 1898 This is terrible behavior which is retained for compatibility with old | |
| 1899 `.elc' files which expect these semantics. | |
| 1900 */ | |
| 1901 (int nargs, Lisp_Object *args)) | |
| 1902 { | |
| 1903 /* In a non-insane world this function would have this arglist... | |
| 1904 (arglist instructions constants stack_depth &optional doc_string interactive) | |
| 1905 */ | |
| 1906 Lisp_Object fun = make_compiled_function (); | |
| 1907 Lisp_Compiled_Function *f = XCOMPILED_FUNCTION (fun); | |
| 1908 | |
| 1909 Lisp_Object arglist = args[0]; | |
| 1910 Lisp_Object instructions = args[1]; | |
| 1911 Lisp_Object constants = args[2]; | |
| 1912 Lisp_Object stack_depth = args[3]; | |
| 1913 Lisp_Object doc_string = (nargs > 4) ? args[4] : Qnil; | |
| 1914 Lisp_Object interactive = (nargs > 5) ? args[5] : Qunbound; | |
| 1915 | |
| 1916 if (nargs < 4 || nargs > 6) | |
| 1917 return Fsignal (Qwrong_number_of_arguments, | |
| 1918 list2 (intern ("make-byte-code"), make_int (nargs))); | |
| 1919 | |
| 1920 /* Check for valid formal parameter list now, to allow us to use | |
| 1921 SPECBIND_FAST_UNSAFE() later in funcall_compiled_function(). */ | |
| 1922 { | |
| 814 | 1923 EXTERNAL_LIST_LOOP_2 (symbol, arglist) |
| 428 | 1924 { |
| 1925 CHECK_SYMBOL (symbol); | |
| 1926 if (EQ (symbol, Qt) || | |
| 1927 EQ (symbol, Qnil) || | |
| 1928 SYMBOL_IS_KEYWORD (symbol)) | |
| 563 | 1929 invalid_constant_2 |
| 428 | 1930 ("Invalid constant symbol in formal parameter list", |
| 1931 symbol, arglist); | |
| 1932 } | |
| 1933 } | |
| 1934 f->arglist = arglist; | |
| 1935 | |
| 1936 /* `instructions' is a string or a cons (string . int) for a | |
| 1937 lazy-loaded function. */ | |
| 1938 if (CONSP (instructions)) | |
| 1939 { | |
| 1940 CHECK_STRING (XCAR (instructions)); | |
| 1941 CHECK_INT (XCDR (instructions)); | |
| 1942 } | |
| 1943 else | |
| 1944 { | |
| 1945 CHECK_STRING (instructions); | |
| 1946 } | |
| 1947 f->instructions = instructions; | |
| 1948 | |
| 1949 if (!NILP (constants)) | |
| 1950 CHECK_VECTOR (constants); | |
| 1951 f->constants = constants; | |
| 1952 | |
| 1953 CHECK_NATNUM (stack_depth); | |
| 442 | 1954 f->stack_depth = (unsigned short) XINT (stack_depth); |
| 428 | 1955 |
| 1956 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK | |
| 1957 if (!NILP (Vcurrent_compiled_function_annotation)) | |
| 1958 f->annotated = Fcopy (Vcurrent_compiled_function_annotation); | |
| 1959 else if (!NILP (Vload_file_name_internal_the_purecopy)) | |
| 1960 f->annotated = Vload_file_name_internal_the_purecopy; | |
| 1961 else if (!NILP (Vload_file_name_internal)) | |
| 1962 { | |
| 1963 struct gcpro gcpro1; | |
| 1964 GCPRO1 (fun); /* don't let fun get reaped */ | |
| 1965 Vload_file_name_internal_the_purecopy = | |
| 1966 Ffile_name_nondirectory (Vload_file_name_internal); | |
| 1967 f->annotated = Vload_file_name_internal_the_purecopy; | |
| 1968 UNGCPRO; | |
| 1969 } | |
| 1970 #endif /* COMPILED_FUNCTION_ANNOTATION_HACK */ | |
| 1971 | |
| 1972 /* doc_string may be nil, string, int, or a cons (string . int). | |
| 1973 interactive may be list or string (or unbound). */ | |
| 1974 f->doc_and_interactive = Qunbound; | |
| 1975 #ifdef I18N3 | |
| 1976 if ((f->flags.domainp = !NILP (Vfile_domain)) != 0) | |
| 1977 f->doc_and_interactive = Vfile_domain; | |
| 1978 #endif | |
| 1979 if ((f->flags.interactivep = !UNBOUNDP (interactive)) != 0) | |
| 1980 { | |
| 1981 f->doc_and_interactive | |
| 1982 = (UNBOUNDP (f->doc_and_interactive) ? interactive : | |
| 1983 Fcons (interactive, f->doc_and_interactive)); | |
| 1984 } | |
| 1985 if ((f->flags.documentationp = !NILP (doc_string)) != 0) | |
| 1986 { | |
| 1987 f->doc_and_interactive | |
| 1988 = (UNBOUNDP (f->doc_and_interactive) ? doc_string : | |
| 1989 Fcons (doc_string, f->doc_and_interactive)); | |
| 1990 } | |
| 1991 if (UNBOUNDP (f->doc_and_interactive)) | |
| 1992 f->doc_and_interactive = Qnil; | |
| 1993 | |
| 1994 return fun; | |
| 1995 } | |
| 1996 | |
| 1997 | |
| 1998 /************************************************************************/ | |
| 1999 /* Symbol allocation */ | |
| 2000 /************************************************************************/ | |
| 2001 | |
| 2720 | 2002 #ifndef MC_ALLOC |
| 440 | 2003 DECLARE_FIXED_TYPE_ALLOC (symbol, Lisp_Symbol); |
| 428 | 2004 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_symbol 1000 |
| 2720 | 2005 #endif /* not MC_ALLOC */ |
| 428 | 2006 |
| 2007 DEFUN ("make-symbol", Fmake_symbol, 1, 1, 0, /* | |
| 2008 Return a newly allocated uninterned symbol whose name is NAME. | |
| 2009 Its value and function definition are void, and its property list is nil. | |
| 2010 */ | |
| 2011 (name)) | |
| 2012 { | |
| 440 | 2013 Lisp_Symbol *p; |
| 428 | 2014 |
| 2015 CHECK_STRING (name); | |
| 2016 | |
| 2720 | 2017 #ifdef MC_ALLOC |
| 2018 p = alloc_lrecord_type (Lisp_Symbol, &lrecord_symbol); | |
| 2019 #else /* not MC_ALLOC */ | |
| 440 | 2020 ALLOCATE_FIXED_TYPE (symbol, Lisp_Symbol, p); |
| 442 | 2021 set_lheader_implementation (&p->lheader, &lrecord_symbol); |
| 2720 | 2022 #endif /* not MC_ALLOC */ |
| 793 | 2023 p->name = name; |
| 428 | 2024 p->plist = Qnil; |
| 2025 p->value = Qunbound; | |
| 2026 p->function = Qunbound; | |
| 2027 symbol_next (p) = 0; | |
| 793 | 2028 return wrap_symbol (p); |
| 428 | 2029 } |
| 2030 | |
| 2031 | |
| 2032 /************************************************************************/ | |
| 2033 /* Extent allocation */ | |
| 2034 /************************************************************************/ | |
| 2035 | |
| 2720 | 2036 #ifndef MC_ALLOC |
| 428 | 2037 DECLARE_FIXED_TYPE_ALLOC (extent, struct extent); |
| 2038 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_extent 1000 | |
| 2720 | 2039 #endif /* not MC_ALLOC */ |
| 428 | 2040 |
| 2041 struct extent * | |
| 2042 allocate_extent (void) | |
| 2043 { | |
| 2044 struct extent *e; | |
| 2045 | |
| 2720 | 2046 #ifdef MC_ALLOC |
| 2047 e = alloc_lrecord_type (struct extent, &lrecord_extent); | |
| 2048 #else /* not MC_ALLOC */ | |
| 428 | 2049 ALLOCATE_FIXED_TYPE (extent, struct extent, e); |
| 442 | 2050 set_lheader_implementation (&e->lheader, &lrecord_extent); |
| 2720 | 2051 #endif /* not MC_ALLOC */ |
| 428 | 2052 extent_object (e) = Qnil; |
| 2053 set_extent_start (e, -1); | |
| 2054 set_extent_end (e, -1); | |
| 2055 e->plist = Qnil; | |
| 2056 | |
| 2057 xzero (e->flags); | |
| 2058 | |
| 2059 extent_face (e) = Qnil; | |
| 2060 e->flags.end_open = 1; /* default is for endpoints to behave like markers */ | |
| 2061 e->flags.detachable = 1; | |
| 2062 | |
| 2063 return e; | |
| 2064 } | |
| 2065 | |
| 2066 | |
| 2067 /************************************************************************/ | |
| 2068 /* Event allocation */ | |
| 2069 /************************************************************************/ | |
| 2070 | |
| 2720 | 2071 #ifndef MC_ALLOC |
| 440 | 2072 DECLARE_FIXED_TYPE_ALLOC (event, Lisp_Event); |
| 428 | 2073 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_event 1000 |
| 2720 | 2074 #endif /* not MC_ALLOC */ |
| 428 | 2075 |
| 2076 Lisp_Object | |
| 2077 allocate_event (void) | |
| 2078 { | |
| 440 | 2079 Lisp_Event *e; |
| 2080 | |
| 2720 | 2081 #ifdef MC_ALLOC |
| 2082 e = alloc_lrecord_type (Lisp_Event, &lrecord_event); | |
| 2083 #else /* not MC_ALLOC */ | |
| 440 | 2084 ALLOCATE_FIXED_TYPE (event, Lisp_Event, e); |
| 442 | 2085 set_lheader_implementation (&e->lheader, &lrecord_event); |
| 2720 | 2086 #endif /* not MC_ALLOC */ |
| 428 | 2087 |
| 793 | 2088 return wrap_event (e); |
| 428 | 2089 } |
| 2090 | |
| 1204 | 2091 #ifdef EVENT_DATA_AS_OBJECTS |
| 2720 | 2092 #ifndef MC_ALLOC |
| 934 | 2093 DECLARE_FIXED_TYPE_ALLOC (key_data, Lisp_Key_Data); |
| 2094 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_key_data 1000 | |
| 2720 | 2095 #endif /* not MC_ALLOC */ |
| 934 | 2096 |
| 2097 Lisp_Object | |
| 1204 | 2098 make_key_data (void) |
| 934 | 2099 { |
| 2100 Lisp_Key_Data *d; | |
| 2101 | |
| 2720 | 2102 #ifdef MC_ALLOC |
| 2103 d = alloc_lrecord_type (Lisp_Key_Data, &lrecord_key_data); | |
| 2104 #else /* not MC_ALLOC */ | |
| 934 | 2105 ALLOCATE_FIXED_TYPE (key_data, Lisp_Key_Data, d); |
| 1204 | 2106 xzero (*d); |
| 934 | 2107 set_lheader_implementation (&d->lheader, &lrecord_key_data); |
| 2720 | 2108 #endif /* not MC_ALLOC */ |
| 1204 | 2109 d->keysym = Qnil; |
| 2110 | |
| 2111 return wrap_key_data (d); | |
| 934 | 2112 } |
| 2113 | |
| 2720 | 2114 #ifndef MC_ALLOC |
| 934 | 2115 DECLARE_FIXED_TYPE_ALLOC (button_data, Lisp_Button_Data); |
| 2116 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_button_data 1000 | |
| 2720 | 2117 #endif /* not MC_ALLOC */ |
| 934 | 2118 |
| 2119 Lisp_Object | |
| 1204 | 2120 make_button_data (void) |
| 934 | 2121 { |
| 2122 Lisp_Button_Data *d; | |
| 2123 | |
| 2720 | 2124 #ifdef MC_ALLOC |
| 2125 d = alloc_lrecord_type (Lisp_Button_Data, &lrecord_button_data); | |
| 2126 #else /* not MC_ALLOC */ | |
| 934 | 2127 ALLOCATE_FIXED_TYPE (button_data, Lisp_Button_Data, d); |
| 1204 | 2128 xzero (*d); |
| 934 | 2129 set_lheader_implementation (&d->lheader, &lrecord_button_data); |
| 2130 | |
| 2720 | 2131 #endif /* not MC_ALLOC */ |
| 1204 | 2132 return wrap_button_data (d); |
| 934 | 2133 } |
| 2134 | |
| 2720 | 2135 #ifndef MC_ALLOC |
| 934 | 2136 DECLARE_FIXED_TYPE_ALLOC (motion_data, Lisp_Motion_Data); |
| 2137 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_motion_data 1000 | |
| 2720 | 2138 #endif /* not MC_ALLOC */ |
| 934 | 2139 |
| 2140 Lisp_Object | |
| 1204 | 2141 make_motion_data (void) |
| 934 | 2142 { |
| 2143 Lisp_Motion_Data *d; | |
| 2144 | |
| 2720 | 2145 #ifdef MC_ALLOC |
| 2146 d = alloc_lrecord_type (Lisp_Motion_Data, &lrecord_motion_data); | |
| 2147 #else /* not MC_ALLOC */ | |
| 934 | 2148 ALLOCATE_FIXED_TYPE (motion_data, Lisp_Motion_Data, d); |
| 1204 | 2149 xzero (*d); |
| 934 | 2150 set_lheader_implementation (&d->lheader, &lrecord_motion_data); |
| 2720 | 2151 #endif /* not MC_ALLOC */ |
| 934 | 2152 |
| 1204 | 2153 return wrap_motion_data (d); |
| 934 | 2154 } |
| 2155 | |
| 2720 | 2156 #ifndef MC_ALLOC |
| 934 | 2157 DECLARE_FIXED_TYPE_ALLOC (process_data, Lisp_Process_Data); |
| 2158 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_process_data 1000 | |
| 2720 | 2159 #endif /* not MC_ALLOC */ |
| 934 | 2160 |
| 2161 Lisp_Object | |
| 1204 | 2162 make_process_data (void) |
| 934 | 2163 { |
| 2164 Lisp_Process_Data *d; | |
| 2165 | |
| 2720 | 2166 #ifdef MC_ALLOC |
| 2167 d = alloc_lrecord_type (Lisp_Process_Data, &lrecord_process_data); | |
| 2168 #else /* not MC_ALLOC */ | |
| 934 | 2169 ALLOCATE_FIXED_TYPE (process_data, Lisp_Process_Data, d); |
| 1204 | 2170 xzero (*d); |
| 934 | 2171 set_lheader_implementation (&d->lheader, &lrecord_process_data); |
| 1204 | 2172 d->process = Qnil; |
| 2720 | 2173 #endif /* not MC_ALLOC */ |
| 1204 | 2174 |
| 2175 return wrap_process_data (d); | |
| 934 | 2176 } |
| 2177 | |
| 2720 | 2178 #ifndef MC_ALLOC |
| 934 | 2179 DECLARE_FIXED_TYPE_ALLOC (timeout_data, Lisp_Timeout_Data); |
| 2180 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_timeout_data 1000 | |
| 2720 | 2181 #endif /* not MC_ALLOC */ |
| 934 | 2182 |
| 2183 Lisp_Object | |
| 1204 | 2184 make_timeout_data (void) |
| 934 | 2185 { |
| 2186 Lisp_Timeout_Data *d; | |
| 2187 | |
| 2720 | 2188 #ifdef MC_ALLOC |
| 2189 d = alloc_lrecord_type (Lisp_Timeout_Data, &lrecord_timeout_data); | |
| 2190 #else /* not MC_ALLOC */ | |
| 934 | 2191 ALLOCATE_FIXED_TYPE (timeout_data, Lisp_Timeout_Data, d); |
| 1204 | 2192 xzero (*d); |
| 934 | 2193 set_lheader_implementation (&d->lheader, &lrecord_timeout_data); |
| 1204 | 2194 d->function = Qnil; |
| 2195 d->object = Qnil; | |
| 2720 | 2196 #endif /* not MC_ALLOC */ |
| 1204 | 2197 |
| 2198 return wrap_timeout_data (d); | |
| 934 | 2199 } |
| 2200 | |
| 2720 | 2201 #ifndef MC_ALLOC |
| 934 | 2202 DECLARE_FIXED_TYPE_ALLOC (magic_data, Lisp_Magic_Data); |
| 2203 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_magic_data 1000 | |
| 2720 | 2204 #endif /* not MC_ALLOC */ |
| 934 | 2205 |
| 2206 Lisp_Object | |
| 1204 | 2207 make_magic_data (void) |
| 934 | 2208 { |
| 2209 Lisp_Magic_Data *d; | |
| 2210 | |
| 2720 | 2211 #ifdef MC_ALLOC |
| 2212 d = alloc_lrecord_type (Lisp_Magic_Data, &lrecord_magic_data); | |
| 2213 #else /* not MC_ALLOC */ | |
| 934 | 2214 ALLOCATE_FIXED_TYPE (magic_data, Lisp_Magic_Data, d); |
| 1204 | 2215 xzero (*d); |
| 934 | 2216 set_lheader_implementation (&d->lheader, &lrecord_magic_data); |
| 2720 | 2217 #endif /* not MC_ALLOC */ |
| 934 | 2218 |
| 1204 | 2219 return wrap_magic_data (d); |
| 934 | 2220 } |
| 2221 | |
| 2720 | 2222 #ifndef MC_ALLOC |
| 934 | 2223 DECLARE_FIXED_TYPE_ALLOC (magic_eval_data, Lisp_Magic_Eval_Data); |
| 2224 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_magic_eval_data 1000 | |
| 2720 | 2225 #endif /* not MC_ALLOC */ |
| 934 | 2226 |
| 2227 Lisp_Object | |
| 1204 | 2228 make_magic_eval_data (void) |
| 934 | 2229 { |
| 2230 Lisp_Magic_Eval_Data *d; | |
| 2231 | |
| 2720 | 2232 #ifdef MC_ALLOC |
| 2233 d = alloc_lrecord_type (Lisp_Magic_Eval_Data, &lrecord_magic_eval_data); | |
| 2234 #else /* not MC_ALLOC */ | |
| 934 | 2235 ALLOCATE_FIXED_TYPE (magic_eval_data, Lisp_Magic_Eval_Data, d); |
| 1204 | 2236 xzero (*d); |
| 934 | 2237 set_lheader_implementation (&d->lheader, &lrecord_magic_eval_data); |
| 1204 | 2238 d->object = Qnil; |
| 2720 | 2239 #endif /* not MC_ALLOC */ |
| 1204 | 2240 |
| 2241 return wrap_magic_eval_data (d); | |
| 934 | 2242 } |
| 2243 | |
| 2720 | 2244 #ifndef MC_ALLOC |
| 934 | 2245 DECLARE_FIXED_TYPE_ALLOC (eval_data, Lisp_Eval_Data); |
| 2246 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_eval_data 1000 | |
| 2720 | 2247 #endif /* not MC_ALLOC */ |
| 934 | 2248 |
| 2249 Lisp_Object | |
| 1204 | 2250 make_eval_data (void) |
| 934 | 2251 { |
| 2252 Lisp_Eval_Data *d; | |
| 2253 | |
| 2720 | 2254 #ifdef MC_ALLOC |
| 2255 d = alloc_lrecord_type (Lisp_Eval_Data, &lrecord_eval_data); | |
| 2256 #else /* not MC_ALLOC */ | |
| 934 | 2257 ALLOCATE_FIXED_TYPE (eval_data, Lisp_Eval_Data, d); |
| 1204 | 2258 xzero (*d); |
| 934 | 2259 set_lheader_implementation (&d->lheader, &lrecord_eval_data); |
| 1204 | 2260 d->function = Qnil; |
| 2261 d->object = Qnil; | |
| 2720 | 2262 #endif /* not MC_ALLOC */ |
| 1204 | 2263 |
| 2264 return wrap_eval_data (d); | |
| 934 | 2265 } |
| 2266 | |
| 2720 | 2267 #ifndef MC_ALLOC |
| 934 | 2268 DECLARE_FIXED_TYPE_ALLOC (misc_user_data, Lisp_Misc_User_Data); |
| 2269 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_misc_user_data 1000 | |
| 2720 | 2270 #endif /* not MC_ALLOC */ |
| 934 | 2271 |
| 2272 Lisp_Object | |
| 1204 | 2273 make_misc_user_data (void) |
| 934 | 2274 { |
| 2275 Lisp_Misc_User_Data *d; | |
| 2276 | |
| 2720 | 2277 #ifdef MC_ALLOC |
| 2278 d = alloc_lrecord_type (Lisp_Misc_User_Data, &lrecord_misc_user_data); | |
| 2279 #else /* not MC_ALLOC */ | |
| 934 | 2280 ALLOCATE_FIXED_TYPE (misc_user_data, Lisp_Misc_User_Data, d); |
| 1204 | 2281 xzero (*d); |
| 934 | 2282 set_lheader_implementation (&d->lheader, &lrecord_misc_user_data); |
| 1204 | 2283 d->function = Qnil; |
| 2284 d->object = Qnil; | |
| 2720 | 2285 #endif /* not MC_ALLOC */ |
| 1204 | 2286 |
| 2287 return wrap_misc_user_data (d); | |
| 934 | 2288 } |
| 1204 | 2289 |
| 2290 #endif /* EVENT_DATA_AS_OBJECTS */ | |
| 428 | 2291 |
| 2292 /************************************************************************/ | |
| 2293 /* Marker allocation */ | |
| 2294 /************************************************************************/ | |
| 2295 | |
| 2720 | 2296 #ifndef MC_ALLOC |
| 440 | 2297 DECLARE_FIXED_TYPE_ALLOC (marker, Lisp_Marker); |
| 428 | 2298 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_marker 1000 |
| 2720 | 2299 #endif /* not MC_ALLOC */ |
| 428 | 2300 |
| 2301 DEFUN ("make-marker", Fmake_marker, 0, 0, 0, /* | |
| 2302 Return a new marker which does not point at any place. | |
| 2303 */ | |
| 2304 ()) | |
| 2305 { | |
| 440 | 2306 Lisp_Marker *p; |
| 2307 | |
| 2720 | 2308 #ifdef MC_ALLOC |
| 2309 p = alloc_lrecord_type (Lisp_Marker, &lrecord_marker); | |
| 2310 #else /* not MC_ALLOC */ | |
| 440 | 2311 ALLOCATE_FIXED_TYPE (marker, Lisp_Marker, p); |
| 442 | 2312 set_lheader_implementation (&p->lheader, &lrecord_marker); |
| 2720 | 2313 #endif /* not MC_ALLOC */ |
| 428 | 2314 p->buffer = 0; |
| 665 | 2315 p->membpos = 0; |
| 428 | 2316 marker_next (p) = 0; |
| 2317 marker_prev (p) = 0; | |
| 2318 p->insertion_type = 0; | |
| 793 | 2319 return wrap_marker (p); |
| 428 | 2320 } |
| 2321 | |
| 2322 Lisp_Object | |
| 2323 noseeum_make_marker (void) | |
| 2324 { | |
| 440 | 2325 Lisp_Marker *p; |
| 2326 | |
| 2720 | 2327 #ifdef MC_ALLOC |
| 2328 p = noseeum_alloc_lrecord_type (Lisp_Marker, &lrecord_marker); | |
| 2329 #else /* not MC_ALLOC */ | |
| 440 | 2330 NOSEEUM_ALLOCATE_FIXED_TYPE (marker, Lisp_Marker, p); |
| 442 | 2331 set_lheader_implementation (&p->lheader, &lrecord_marker); |
| 2720 | 2332 #endif /* not MC_ALLOC */ |
| 428 | 2333 p->buffer = 0; |
| 665 | 2334 p->membpos = 0; |
| 428 | 2335 marker_next (p) = 0; |
| 2336 marker_prev (p) = 0; | |
| 2337 p->insertion_type = 0; | |
| 793 | 2338 return wrap_marker (p); |
| 428 | 2339 } |
| 2340 | |
| 2341 | |
| 2342 /************************************************************************/ | |
| 2343 /* String allocation */ | |
| 2344 /************************************************************************/ | |
| 2345 | |
| 2346 /* The data for "short" strings generally resides inside of structs of type | |
| 2347 string_chars_block. The Lisp_String structure is allocated just like any | |
| 1204 | 2348 other basic lrecord, and these are freelisted when they get garbage |
| 2349 collected. The data for short strings get compacted, but the data for | |
| 2350 large strings do not. | |
| 428 | 2351 |
| 2352 Previously Lisp_String structures were relocated, but this caused a lot | |
| 2353 of bus-errors because the C code didn't include enough GCPRO's for | |
| 2354 strings (since EVERY REFERENCE to a short string needed to be GCPRO'd so | |
| 2355 that the reference would get relocated). | |
| 2356 | |
| 2357 This new method makes things somewhat bigger, but it is MUCH safer. */ | |
| 2358 | |
| 2720 | 2359 #ifndef MC_ALLOC |
| 438 | 2360 DECLARE_FIXED_TYPE_ALLOC (string, Lisp_String); |
| 428 | 2361 /* strings are used and freed quite often */ |
| 2362 /* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 10000 */ | |
| 2363 #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 1000 | |
| 2720 | 2364 #endif /* not MC_ALLOC */ |
| 428 | 2365 |
| 2366 static Lisp_Object | |
| 2367 mark_string (Lisp_Object obj) | |
| 2368 { | |
| 793 | 2369 if (CONSP (XSTRING_PLIST (obj)) && EXTENT_INFOP (XCAR (XSTRING_PLIST (obj)))) |
| 2370 flush_cached_extent_info (XCAR (XSTRING_PLIST (obj))); | |
| 2371 return XSTRING_PLIST (obj); | |
| 428 | 2372 } |
| 2373 | |
| 2374 static int | |
| 2286 | 2375 string_equal (Lisp_Object obj1, Lisp_Object obj2, int UNUSED (depth)) |
| 428 | 2376 { |
| 2377 Bytecount len; | |
| 2378 return (((len = XSTRING_LENGTH (obj1)) == XSTRING_LENGTH (obj2)) && | |
| 2379 !memcmp (XSTRING_DATA (obj1), XSTRING_DATA (obj2), len)); | |
| 2380 } | |
| 2381 | |
| 1204 | 2382 static const struct memory_description string_description[] = { |
| 793 | 2383 { XD_BYTECOUNT, offsetof (Lisp_String, size_) }, |
| 2384 { XD_OPAQUE_DATA_PTR, offsetof (Lisp_String, data_), XD_INDIRECT(0, 1) }, | |
| 440 | 2385 { XD_LISP_OBJECT, offsetof (Lisp_String, plist) }, |
| 428 | 2386 { XD_END } |
| 2387 }; | |
| 2388 | |
| 442 | 2389 /* We store the string's extent info as the first element of the string's |
| 2390 property list; and the string's MODIFF as the first or second element | |
| 2391 of the string's property list (depending on whether the extent info | |
| 2392 is present), but only if the string has been modified. This is ugly | |
| 2393 but it reduces the memory allocated for the string in the vast | |
| 2394 majority of cases, where the string is never modified and has no | |
| 2395 extent info. | |
| 2396 | |
| 2397 #### This means you can't use an int as a key in a string's plist. */ | |
| 2398 | |
| 2399 static Lisp_Object * | |
| 2400 string_plist_ptr (Lisp_Object string) | |
| 2401 { | |
| 793 | 2402 Lisp_Object *ptr = &XSTRING_PLIST (string); |
| 442 | 2403 |
| 2404 if (CONSP (*ptr) && EXTENT_INFOP (XCAR (*ptr))) | |
| 2405 ptr = &XCDR (*ptr); | |
| 2406 if (CONSP (*ptr) && INTP (XCAR (*ptr))) | |
| 2407 ptr = &XCDR (*ptr); | |
| 2408 return ptr; | |
| 2409 } | |
| 2410 | |
| 2411 static Lisp_Object | |
| 2412 string_getprop (Lisp_Object string, Lisp_Object property) | |
| 2413 { | |
| 2414 return external_plist_get (string_plist_ptr (string), property, 0, ERROR_ME); | |
| 2415 } | |
| 2416 | |
| 2417 static int | |
| 2418 string_putprop (Lisp_Object string, Lisp_Object property, Lisp_Object value) | |
| 2419 { | |
| 2420 external_plist_put (string_plist_ptr (string), property, value, 0, ERROR_ME); | |
| 2421 return 1; | |
| 2422 } | |
| 2423 | |
| 2424 static int | |
| 2425 string_remprop (Lisp_Object string, Lisp_Object property) | |
| 2426 { | |
| 2427 return external_remprop (string_plist_ptr (string), property, 0, ERROR_ME); | |
| 2428 } | |
| 2429 | |
| 2430 static Lisp_Object | |
| 2431 string_plist (Lisp_Object string) | |
| 2432 { | |
| 2433 return *string_plist_ptr (string); | |
| 2434 } | |
| 2435 | |
| 2720 | 2436 #ifndef MC_ALLOC |
| 442 | 2437 /* No `finalize', or `hash' methods. |
| 2438 internal_hash() already knows how to hash strings and finalization | |
| 2439 is done with the ADDITIONAL_FREE_string macro, which is the | |
| 2440 standard way to do finalization when using | |
| 2441 SWEEP_FIXED_TYPE_BLOCK(). */ | |
| 2720 | 2442 |
| 934 | 2443 DEFINE_BASIC_LRECORD_IMPLEMENTATION_WITH_PROPS ("string", string, |
| 2444 1, /*dumpable-flag*/ | |
| 2445 mark_string, print_string, | |
| 2446 0, string_equal, 0, | |
| 2447 string_description, | |
| 2448 string_getprop, | |
| 2449 string_putprop, | |
| 2450 string_remprop, | |
| 2451 string_plist, | |
| 2452 Lisp_String); | |
| 2720 | 2453 #endif /* not MC_ALLOC */ |
| 2454 | |
| 428 | 2455 /* String blocks contain this many useful bytes. */ |
| 2456 #define STRING_CHARS_BLOCK_SIZE \ | |
| 814 | 2457 ((Bytecount) (8192 - MALLOC_OVERHEAD - \ |
| 2458 ((2 * sizeof (struct string_chars_block *)) \ | |
| 2459 + sizeof (EMACS_INT)))) | |
| 428 | 2460 /* Block header for small strings. */ |
| 2461 struct string_chars_block | |
| 2462 { | |
| 2463 EMACS_INT pos; | |
| 2464 struct string_chars_block *next; | |
| 2465 struct string_chars_block *prev; | |
| 2466 /* Contents of string_chars_block->string_chars are interleaved | |
| 2467 string_chars structures (see below) and the actual string data */ | |
| 2468 unsigned char string_chars[STRING_CHARS_BLOCK_SIZE]; | |
| 2469 }; | |
| 2470 | |
| 2471 static struct string_chars_block *first_string_chars_block; | |
| 2472 static struct string_chars_block *current_string_chars_block; | |
| 2473 | |
| 2474 /* If SIZE is the length of a string, this returns how many bytes | |
| 2475 * the string occupies in string_chars_block->string_chars | |
| 2476 * (including alignment padding). | |
| 2477 */ | |
| 438 | 2478 #define STRING_FULLSIZE(size) \ |
| 826 | 2479 ALIGN_FOR_TYPE (((size) + 1 + sizeof (Lisp_String *)), Lisp_String *) |
| 428 | 2480 |
| 2481 #define BIG_STRING_FULLSIZE_P(fullsize) ((fullsize) >= STRING_CHARS_BLOCK_SIZE) | |
| 2482 #define BIG_STRING_SIZE_P(size) (BIG_STRING_FULLSIZE_P (STRING_FULLSIZE(size))) | |
| 2483 | |
| 454 | 2484 #define STRING_CHARS_FREE_P(ptr) ((ptr)->string == NULL) |
| 2485 #define MARK_STRING_CHARS_AS_FREE(ptr) ((void) ((ptr)->string = NULL)) | |
| 2486 | |
| 2720 | 2487 #ifdef MC_ALLOC |
| 2488 static void | |
| 2489 finalize_string (void *header, int for_disksave) | |
| 2490 { | |
| 2491 if (!for_disksave) | |
| 2492 { | |
| 2493 Lisp_String *s = (Lisp_String *) header; | |
| 2494 Bytecount size = s->size_; | |
| 2775 | 2495 #ifdef MC_ALLOC_TYPE_STATS |
| 2496 dec_lrecord_string_data_stats (size); | |
| 2497 #endif /* MC_ALLOC_TYPE_STATS */ | |
| 2720 | 2498 if (BIG_STRING_SIZE_P (size)) |
| 2499 xfree (s->data_, Ibyte *); | |
| 2500 } | |
| 2501 } | |
| 2502 | |
| 2503 DEFINE_LRECORD_IMPLEMENTATION_WITH_PROPS ("string", string, | |
| 2504 1, /*dumpable-flag*/ | |
| 2505 mark_string, print_string, | |
| 2506 finalize_string, | |
| 2507 string_equal, 0, | |
| 2508 string_description, | |
| 2509 string_getprop, | |
| 2510 string_putprop, | |
| 2511 string_remprop, | |
| 2512 string_plist, | |
| 2513 Lisp_String); | |
| 2514 | |
| 2515 #endif /* MC_ALLOC */ | |
| 2516 | |
| 428 | 2517 struct string_chars |
| 2518 { | |
| 438 | 2519 Lisp_String *string; |
| 428 | 2520 unsigned char chars[1]; |
| 2521 }; | |
| 2522 | |
| 2523 struct unused_string_chars | |
| 2524 { | |
| 438 | 2525 Lisp_String *string; |
| 428 | 2526 EMACS_INT fullsize; |
| 2527 }; | |
| 2528 | |
| 2529 static void | |
| 2530 init_string_chars_alloc (void) | |
| 2531 { | |
| 2532 first_string_chars_block = xnew (struct string_chars_block); | |
| 2533 first_string_chars_block->prev = 0; | |
| 2534 first_string_chars_block->next = 0; | |
| 2535 first_string_chars_block->pos = 0; | |
| 2536 current_string_chars_block = first_string_chars_block; | |
| 2537 } | |
| 2538 | |
| 1550 | 2539 static Ibyte * |
| 2540 allocate_big_string_chars (Bytecount length) | |
| 2541 { | |
| 2542 Ibyte *p = xnew_array (Ibyte, length); | |
| 2543 INCREMENT_CONS_COUNTER (length, "string chars"); | |
| 2544 return p; | |
| 2545 } | |
| 2546 | |
| 428 | 2547 static struct string_chars * |
| 793 | 2548 allocate_string_chars_struct (Lisp_Object string_it_goes_with, |
| 814 | 2549 Bytecount fullsize) |
| 428 | 2550 { |
| 2551 struct string_chars *s_chars; | |
| 2552 | |
| 438 | 2553 if (fullsize <= |
| 2554 (countof (current_string_chars_block->string_chars) | |
| 2555 - current_string_chars_block->pos)) | |
| 428 | 2556 { |
| 2557 /* This string can fit in the current string chars block */ | |
| 2558 s_chars = (struct string_chars *) | |
| 2559 (current_string_chars_block->string_chars | |
| 2560 + current_string_chars_block->pos); | |
| 2561 current_string_chars_block->pos += fullsize; | |
| 2562 } | |
| 2563 else | |
| 2564 { | |
| 2565 /* Make a new current string chars block */ | |
| 2566 struct string_chars_block *new_scb = xnew (struct string_chars_block); | |
| 2567 | |
| 2568 current_string_chars_block->next = new_scb; | |
| 2569 new_scb->prev = current_string_chars_block; | |
| 2570 new_scb->next = 0; | |
| 2571 current_string_chars_block = new_scb; | |
| 2572 new_scb->pos = fullsize; | |
| 2573 s_chars = (struct string_chars *) | |
| 2574 current_string_chars_block->string_chars; | |
| 2575 } | |
| 2576 | |
| 793 | 2577 s_chars->string = XSTRING (string_it_goes_with); |
| 428 | 2578 |
| 2579 INCREMENT_CONS_COUNTER (fullsize, "string chars"); | |
| 2580 | |
| 2581 return s_chars; | |
| 2582 } | |
| 2583 | |
| 771 | 2584 #ifdef SLEDGEHAMMER_CHECK_ASCII_BEGIN |
| 2585 void | |
| 2586 sledgehammer_check_ascii_begin (Lisp_Object str) | |
| 2587 { | |
| 2588 Bytecount i; | |
| 2589 | |
| 2590 for (i = 0; i < XSTRING_LENGTH (str); i++) | |
| 2591 { | |
| 826 | 2592 if (!byte_ascii_p (string_byte (str, i))) |
| 771 | 2593 break; |
| 2594 } | |
| 2595 | |
| 2596 assert (i == (Bytecount) XSTRING_ASCII_BEGIN (str) || | |
| 2597 (i > MAX_STRING_ASCII_BEGIN && | |
| 2598 (Bytecount) XSTRING_ASCII_BEGIN (str) == | |
| 2599 (Bytecount) MAX_STRING_ASCII_BEGIN)); | |
| 2600 } | |
| 2601 #endif | |
| 2602 | |
| 2603 /* You do NOT want to be calling this! (And if you do, you must call | |
| 851 | 2604 XSET_STRING_ASCII_BEGIN() after modifying the string.) Use ALLOCA () |
| 771 | 2605 instead and then call make_string() like the rest of the world. */ |
| 2606 | |
| 428 | 2607 Lisp_Object |
| 2608 make_uninit_string (Bytecount length) | |
| 2609 { | |
| 438 | 2610 Lisp_String *s; |
| 814 | 2611 Bytecount fullsize = STRING_FULLSIZE (length); |
| 428 | 2612 |
| 438 | 2613 assert (length >= 0 && fullsize > 0); |
| 428 | 2614 |
| 2720 | 2615 #ifdef MC_ALLOC |
| 2616 s = alloc_lrecord_type (Lisp_String, &lrecord_string); | |
| 2775 | 2617 #ifdef MC_ALLOC_TYPE_STATS |
| 2618 inc_lrecord_string_data_stats (length); | |
| 2619 #endif /* MC_ALLOC_TYPE_STATS */ | |
| 2720 | 2620 #else /* not MC_ALLOC */ |
| 428 | 2621 /* Allocate the string header */ |
| 438 | 2622 ALLOCATE_FIXED_TYPE (string, Lisp_String, s); |
| 793 | 2623 xzero (*s); |
| 771 | 2624 set_lheader_implementation (&s->u.lheader, &lrecord_string); |
| 2720 | 2625 #endif /* not MC_ALLOC */ |
| 2626 | |
| 826 | 2627 set_lispstringp_data (s, BIG_STRING_FULLSIZE_P (fullsize) |
| 2720 | 2628 ? allocate_big_string_chars (length + 1) |
| 2629 : allocate_string_chars_struct (wrap_string (s), | |
| 2630 fullsize)->chars); | |
| 438 | 2631 |
| 826 | 2632 set_lispstringp_length (s, length); |
| 428 | 2633 s->plist = Qnil; |
| 793 | 2634 set_string_byte (wrap_string (s), length, 0); |
| 2635 | |
| 2636 return wrap_string (s); | |
| 428 | 2637 } |
| 2638 | |
| 2639 #ifdef VERIFY_STRING_CHARS_INTEGRITY | |
| 2640 static void verify_string_chars_integrity (void); | |
| 2641 #endif | |
| 2642 | |
| 2643 /* Resize the string S so that DELTA bytes can be inserted starting | |
| 2644 at POS. If DELTA < 0, it means deletion starting at POS. If | |
| 2645 POS < 0, resize the string but don't copy any characters. Use | |
| 2646 this if you're planning on completely overwriting the string. | |
| 2647 */ | |
| 2648 | |
| 2649 void | |
| 793 | 2650 resize_string (Lisp_Object s, Bytecount pos, Bytecount delta) |
| 428 | 2651 { |
| 438 | 2652 Bytecount oldfullsize, newfullsize; |
| 428 | 2653 #ifdef VERIFY_STRING_CHARS_INTEGRITY |
| 2654 verify_string_chars_integrity (); | |
| 2655 #endif | |
| 800 | 2656 #ifdef ERROR_CHECK_TEXT |
| 428 | 2657 if (pos >= 0) |
| 2658 { | |
| 793 | 2659 assert (pos <= XSTRING_LENGTH (s)); |
| 428 | 2660 if (delta < 0) |
| 793 | 2661 assert (pos + (-delta) <= XSTRING_LENGTH (s)); |
| 428 | 2662 } |
| 2663 else | |
| 2664 { | |
| 2665 if (delta < 0) | |
| 793 | 2666 assert ((-delta) <= XSTRING_LENGTH (s)); |
| 428 | 2667 } |
| 800 | 2668 #endif /* ERROR_CHECK_TEXT */ |
| 428 | 2669 |
| 2670 if (delta == 0) | |
| 2671 /* simplest case: no size change. */ | |
| 2672 return; | |
| 438 | 2673 |
| 2674 if (pos >= 0 && delta < 0) | |
| 2675 /* If DELTA < 0, the functions below will delete the characters | |
| 2676 before POS. We want to delete characters *after* POS, however, | |
| 2677 so convert this to the appropriate form. */ | |
| 2678 pos += -delta; | |
| 2679 | |
| 793 | 2680 oldfullsize = STRING_FULLSIZE (XSTRING_LENGTH (s)); |
| 2681 newfullsize = STRING_FULLSIZE (XSTRING_LENGTH (s) + delta); | |
| 438 | 2682 |
| 2683 if (BIG_STRING_FULLSIZE_P (oldfullsize)) | |
| 428 | 2684 { |
| 438 | 2685 if (BIG_STRING_FULLSIZE_P (newfullsize)) |
| 428 | 2686 { |
| 440 | 2687 /* Both strings are big. We can just realloc(). |
| 2688 But careful! If the string is shrinking, we have to | |
| 2689 memmove() _before_ realloc(), and if growing, we have to | |
| 2690 memmove() _after_ realloc() - otherwise the access is | |
| 2691 illegal, and we might crash. */ | |
| 793 | 2692 Bytecount len = XSTRING_LENGTH (s) + 1 - pos; |
| 440 | 2693 |
| 2694 if (delta < 0 && pos >= 0) | |
| 793 | 2695 memmove (XSTRING_DATA (s) + pos + delta, |
| 2696 XSTRING_DATA (s) + pos, len); | |
| 2697 XSET_STRING_DATA | |
| 867 | 2698 (s, (Ibyte *) xrealloc (XSTRING_DATA (s), |
| 793 | 2699 XSTRING_LENGTH (s) + delta + 1)); |
| 440 | 2700 if (delta > 0 && pos >= 0) |
| 793 | 2701 memmove (XSTRING_DATA (s) + pos + delta, XSTRING_DATA (s) + pos, |
| 2702 len); | |
| 1550 | 2703 /* Bump the cons counter. |
| 2704 Conservative; Martin let the increment be delta. */ | |
| 2705 INCREMENT_CONS_COUNTER (newfullsize, "string chars"); | |
| 428 | 2706 } |
| 438 | 2707 else /* String has been demoted from BIG_STRING. */ |
| 428 | 2708 { |
| 867 | 2709 Ibyte *new_data = |
| 438 | 2710 allocate_string_chars_struct (s, newfullsize)->chars; |
| 867 | 2711 Ibyte *old_data = XSTRING_DATA (s); |
| 438 | 2712 |
| 2713 if (pos >= 0) | |
| 2714 { | |
| 2715 memcpy (new_data, old_data, pos); | |
| 2716 memcpy (new_data + pos + delta, old_data + pos, | |
| 793 | 2717 XSTRING_LENGTH (s) + 1 - pos); |
| 438 | 2718 } |
| 793 | 2719 XSET_STRING_DATA (s, new_data); |
| 1726 | 2720 xfree (old_data, Ibyte *); |
| 438 | 2721 } |
| 2722 } | |
| 2723 else /* old string is small */ | |
| 2724 { | |
| 2725 if (oldfullsize == newfullsize) | |
| 2726 { | |
| 2727 /* special case; size change but the necessary | |
| 2728 allocation size won't change (up or down; code | |
| 2729 somewhere depends on there not being any unused | |
| 2730 allocation space, modulo any alignment | |
| 2731 constraints). */ | |
| 428 | 2732 if (pos >= 0) |
| 2733 { | |
| 867 | 2734 Ibyte *addroff = pos + XSTRING_DATA (s); |
| 428 | 2735 |
| 2736 memmove (addroff + delta, addroff, | |
| 2737 /* +1 due to zero-termination. */ | |
| 793 | 2738 XSTRING_LENGTH (s) + 1 - pos); |
| 428 | 2739 } |
| 2740 } | |
| 2741 else | |
| 2742 { | |
| 867 | 2743 Ibyte *old_data = XSTRING_DATA (s); |
| 2744 Ibyte *new_data = | |
| 438 | 2745 BIG_STRING_FULLSIZE_P (newfullsize) |
| 1550 | 2746 ? allocate_big_string_chars (XSTRING_LENGTH (s) + delta + 1) |
| 438 | 2747 : allocate_string_chars_struct (s, newfullsize)->chars; |
| 2748 | |
| 428 | 2749 if (pos >= 0) |
| 2750 { | |
| 438 | 2751 memcpy (new_data, old_data, pos); |
| 2752 memcpy (new_data + pos + delta, old_data + pos, | |
| 793 | 2753 XSTRING_LENGTH (s) + 1 - pos); |
| 428 | 2754 } |
| 793 | 2755 XSET_STRING_DATA (s, new_data); |
| 438 | 2756 |
| 2757 { | |
| 2758 /* We need to mark this chunk of the string_chars_block | |
| 2759 as unused so that compact_string_chars() doesn't | |
| 2760 freak. */ | |
| 2761 struct string_chars *old_s_chars = (struct string_chars *) | |
| 2762 ((char *) old_data - offsetof (struct string_chars, chars)); | |
| 2763 /* Sanity check to make sure we aren't hosed by strange | |
| 2764 alignment/padding. */ | |
| 793 | 2765 assert (old_s_chars->string == XSTRING (s)); |
| 454 | 2766 MARK_STRING_CHARS_AS_FREE (old_s_chars); |
| 438 | 2767 ((struct unused_string_chars *) old_s_chars)->fullsize = |
| 2768 oldfullsize; | |
| 2769 } | |
| 428 | 2770 } |
| 438 | 2771 } |
| 2772 | |
| 793 | 2773 XSET_STRING_LENGTH (s, XSTRING_LENGTH (s) + delta); |
| 438 | 2774 /* If pos < 0, the string won't be zero-terminated. |
| 2775 Terminate now just to make sure. */ | |
| 793 | 2776 XSTRING_DATA (s)[XSTRING_LENGTH (s)] = '\0'; |
| 438 | 2777 |
| 2778 if (pos >= 0) | |
| 793 | 2779 /* We also have to adjust all of the extent indices after the |
| 2780 place we did the change. We say "pos - 1" because | |
| 2781 adjust_extents() is exclusive of the starting position | |
| 2782 passed to it. */ | |
| 2783 adjust_extents (s, pos - 1, XSTRING_LENGTH (s), delta); | |
| 428 | 2784 |
| 2785 #ifdef VERIFY_STRING_CHARS_INTEGRITY | |
| 2786 verify_string_chars_integrity (); | |
| 2787 #endif | |
| 2788 } | |
| 2789 | |
| 2790 #ifdef MULE | |
| 2791 | |
| 771 | 2792 /* WARNING: If you modify an existing string, you must call |
| 2793 CHECK_LISP_WRITEABLE() before and bump_string_modiff() afterwards. */ | |
| 428 | 2794 void |
| 867 | 2795 set_string_char (Lisp_Object s, Charcount i, Ichar c) |
| 428 | 2796 { |
| 867 | 2797 Ibyte newstr[MAX_ICHAR_LEN]; |
| 771 | 2798 Bytecount bytoff = string_index_char_to_byte (s, i); |
| 867 | 2799 Bytecount oldlen = itext_ichar_len (XSTRING_DATA (s) + bytoff); |
| 2800 Bytecount newlen = set_itext_ichar (newstr, c); | |
| 428 | 2801 |
| 793 | 2802 sledgehammer_check_ascii_begin (s); |
| 428 | 2803 if (oldlen != newlen) |
| 2804 resize_string (s, bytoff, newlen - oldlen); | |
| 793 | 2805 /* Remember, XSTRING_DATA (s) might have changed so we can't cache it. */ |
| 2806 memcpy (XSTRING_DATA (s) + bytoff, newstr, newlen); | |
| 771 | 2807 if (oldlen != newlen) |
| 2808 { | |
| 793 | 2809 if (newlen > 1 && i <= (Charcount) XSTRING_ASCII_BEGIN (s)) |
| 771 | 2810 /* Everything starting with the new char is no longer part of |
| 2811 ascii_begin */ | |
| 793 | 2812 XSET_STRING_ASCII_BEGIN (s, i); |
| 2813 else if (newlen == 1 && i == (Charcount) XSTRING_ASCII_BEGIN (s)) | |
| 771 | 2814 /* We've extended ascii_begin, and we have to figure out how much by */ |
| 2815 { | |
| 2816 Bytecount j; | |
| 814 | 2817 for (j = (Bytecount) i + 1; j < XSTRING_LENGTH (s); j++) |
| 771 | 2818 { |
| 826 | 2819 if (!byte_ascii_p (XSTRING_DATA (s)[j])) |
| 771 | 2820 break; |
| 2821 } | |
| 814 | 2822 XSET_STRING_ASCII_BEGIN (s, min (j, (Bytecount) MAX_STRING_ASCII_BEGIN)); |
| 771 | 2823 } |
| 2824 } | |
| 793 | 2825 sledgehammer_check_ascii_begin (s); |
| 428 | 2826 } |
| 2827 | |
| 2828 #endif /* MULE */ | |
| 2829 | |
| 2830 DEFUN ("make-string", Fmake_string, 2, 2, 0, /* | |
| 444 | 2831 Return a new string consisting of LENGTH copies of CHARACTER. |
| 2832 LENGTH must be a non-negative integer. | |
| 428 | 2833 */ |
| 444 | 2834 (length, character)) |
| 428 | 2835 { |
| 2836 CHECK_NATNUM (length); | |
| 444 | 2837 CHECK_CHAR_COERCE_INT (character); |
| 428 | 2838 { |
| 867 | 2839 Ibyte init_str[MAX_ICHAR_LEN]; |
| 2840 int len = set_itext_ichar (init_str, XCHAR (character)); | |
| 428 | 2841 Lisp_Object val = make_uninit_string (len * XINT (length)); |
| 2842 | |
| 2843 if (len == 1) | |
| 771 | 2844 { |
| 2845 /* Optimize the single-byte case */ | |
| 2846 memset (XSTRING_DATA (val), XCHAR (character), XSTRING_LENGTH (val)); | |
| 793 | 2847 XSET_STRING_ASCII_BEGIN (val, min (MAX_STRING_ASCII_BEGIN, |
| 2848 len * XINT (length))); | |
| 771 | 2849 } |
| 428 | 2850 else |
| 2851 { | |
| 647 | 2852 EMACS_INT i; |
| 867 | 2853 Ibyte *ptr = XSTRING_DATA (val); |
| 428 | 2854 |
| 2720 | 2855 #ifdef MC_ALLOC |
| 2856 /* Need this for the new allocator: strings are using the uid | |
| 2857 field for ascii_begin. The uid field is set for debugging, | |
| 2858 but the string code assumes here that ascii_begin is always | |
| 2859 zero, when not touched. This assumption is not true with | |
| 2860 the new allocator, so ascii_begin has to be set to zero | |
| 2861 here. */ | |
| 2862 XSET_STRING_ASCII_BEGIN (val, 0); | |
| 2863 #endif /* not MC_ALLOC */ | |
| 2864 | |
| 428 | 2865 for (i = XINT (length); i; i--) |
| 2866 { | |
| 867 | 2867 Ibyte *init_ptr = init_str; |
| 428 | 2868 switch (len) |
| 2869 { | |
| 2870 case 4: *ptr++ = *init_ptr++; | |
| 2871 case 3: *ptr++ = *init_ptr++; | |
| 2872 case 2: *ptr++ = *init_ptr++; | |
| 2873 case 1: *ptr++ = *init_ptr++; | |
| 2874 } | |
| 2875 } | |
| 2876 } | |
| 771 | 2877 sledgehammer_check_ascii_begin (val); |
| 428 | 2878 return val; |
| 2879 } | |
| 2880 } | |
| 2881 | |
| 2882 DEFUN ("string", Fstring, 0, MANY, 0, /* | |
| 2883 Concatenate all the argument characters and make the result a string. | |
| 2884 */ | |
| 2885 (int nargs, Lisp_Object *args)) | |
| 2886 { | |
| 2367 | 2887 Ibyte *storage = alloca_ibytes (nargs * MAX_ICHAR_LEN); |
| 867 | 2888 Ibyte *p = storage; |
| 428 | 2889 |
| 2890 for (; nargs; nargs--, args++) | |
| 2891 { | |
| 2892 Lisp_Object lisp_char = *args; | |
| 2893 CHECK_CHAR_COERCE_INT (lisp_char); | |
| 867 | 2894 p += set_itext_ichar (p, XCHAR (lisp_char)); |
| 428 | 2895 } |
| 2896 return make_string (storage, p - storage); | |
| 2897 } | |
| 2898 | |
| 771 | 2899 /* Initialize the ascii_begin member of a string to the correct value. */ |
| 2900 | |
| 2901 void | |
| 2902 init_string_ascii_begin (Lisp_Object string) | |
| 2903 { | |
| 2904 #ifdef MULE | |
| 2905 int i; | |
| 2906 Bytecount length = XSTRING_LENGTH (string); | |
| 867 | 2907 Ibyte *contents = XSTRING_DATA (string); |
| 771 | 2908 |
| 2909 for (i = 0; i < length; i++) | |
| 2910 { | |
| 826 | 2911 if (!byte_ascii_p (contents[i])) |
| 771 | 2912 break; |
| 2913 } | |
| 793 | 2914 XSET_STRING_ASCII_BEGIN (string, min (i, MAX_STRING_ASCII_BEGIN)); |
| 771 | 2915 #else |
| 793 | 2916 XSET_STRING_ASCII_BEGIN (string, min (XSTRING_LENGTH (string), |
| 2917 MAX_STRING_ASCII_BEGIN)); | |
| 771 | 2918 #endif |
| 2919 sledgehammer_check_ascii_begin (string); | |
| 2920 } | |
| 428 | 2921 |
| 2922 /* Take some raw memory, which MUST already be in internal format, | |
| 2923 and package it up into a Lisp string. */ | |
| 2924 Lisp_Object | |
| 867 | 2925 make_string (const Ibyte *contents, Bytecount length) |
| 428 | 2926 { |
| 2927 Lisp_Object val; | |
| 2928 | |
| 2929 /* Make sure we find out about bad make_string's when they happen */ | |
| 800 | 2930 #if defined (ERROR_CHECK_TEXT) && defined (MULE) |
| 428 | 2931 bytecount_to_charcount (contents, length); /* Just for the assertions */ |
| 2932 #endif | |
| 2933 | |
| 2934 val = make_uninit_string (length); | |
| 2935 memcpy (XSTRING_DATA (val), contents, length); | |
| 771 | 2936 init_string_ascii_begin (val); |
| 2937 sledgehammer_check_ascii_begin (val); | |
| 428 | 2938 return val; |
| 2939 } | |
| 2940 | |
| 2941 /* Take some raw memory, encoded in some external data format, | |
| 2942 and convert it into a Lisp string. */ | |
| 2943 Lisp_Object | |
| 442 | 2944 make_ext_string (const Extbyte *contents, EMACS_INT length, |
| 440 | 2945 Lisp_Object coding_system) |
| 428 | 2946 { |
| 440 | 2947 Lisp_Object string; |
| 2948 TO_INTERNAL_FORMAT (DATA, (contents, length), | |
| 2949 LISP_STRING, string, | |
| 2950 coding_system); | |
| 2951 return string; | |
| 428 | 2952 } |
| 2953 | |
| 2954 Lisp_Object | |
| 867 | 2955 build_intstring (const Ibyte *str) |
| 771 | 2956 { |
| 2957 /* Some strlen's crash and burn if passed null. */ | |
| 814 | 2958 return make_string (str, (str ? qxestrlen (str) : (Bytecount) 0)); |
| 771 | 2959 } |
| 2960 | |
| 2961 Lisp_Object | |
| 867 | 2962 build_string (const CIbyte *str) |
| 428 | 2963 { |
| 2964 /* Some strlen's crash and burn if passed null. */ | |
| 867 | 2965 return make_string ((const Ibyte *) str, (str ? strlen (str) : 0)); |
| 428 | 2966 } |
| 2967 | |
| 2968 Lisp_Object | |
| 593 | 2969 build_ext_string (const Extbyte *str, Lisp_Object coding_system) |
| 428 | 2970 { |
| 2971 /* Some strlen's crash and burn if passed null. */ | |
| 2367 | 2972 return make_ext_string ((const Extbyte *) str, |
| 2973 (str ? dfc_external_data_len (str, coding_system) : | |
| 2974 0), | |
| 440 | 2975 coding_system); |
| 428 | 2976 } |
| 2977 | |
| 2978 Lisp_Object | |
| 867 | 2979 build_msg_intstring (const Ibyte *str) |
| 428 | 2980 { |
| 771 | 2981 return build_intstring (GETTEXT (str)); |
| 2982 } | |
| 2983 | |
| 2984 Lisp_Object | |
| 867 | 2985 build_msg_string (const CIbyte *str) |
| 771 | 2986 { |
| 2987 return build_string (CGETTEXT (str)); | |
| 428 | 2988 } |
| 2989 | |
| 2990 Lisp_Object | |
| 867 | 2991 make_string_nocopy (const Ibyte *contents, Bytecount length) |
| 428 | 2992 { |
| 438 | 2993 Lisp_String *s; |
| 428 | 2994 Lisp_Object val; |
| 2995 | |
| 2996 /* Make sure we find out about bad make_string_nocopy's when they happen */ | |
| 800 | 2997 #if defined (ERROR_CHECK_TEXT) && defined (MULE) |
| 428 | 2998 bytecount_to_charcount (contents, length); /* Just for the assertions */ |
| 2999 #endif | |
| 3000 | |
| 2720 | 3001 #ifdef MC_ALLOC |
| 3002 s = alloc_lrecord_type (Lisp_String, &lrecord_string); | |
| 2775 | 3003 #ifdef MC_ALLOC_TYPE_STATS |
| 3004 inc_lrecord_string_data_stats (length); | |
| 3005 #endif /* MC_ALLOC_TYPE_STATS */ | |
| 2720 | 3006 mcpro (wrap_pointer_1 (s)); /* otherwise nocopy_strings get |
| 3007 collected and static data is tried to | |
| 3008 be freed. */ | |
| 3009 #else /* not MC_ALLOC */ | |
| 428 | 3010 /* Allocate the string header */ |
| 438 | 3011 ALLOCATE_FIXED_TYPE (string, Lisp_String, s); |
| 771 | 3012 set_lheader_implementation (&s->u.lheader, &lrecord_string); |
| 3013 SET_C_READONLY_RECORD_HEADER (&s->u.lheader); | |
| 2720 | 3014 #endif /* not MC_ALLOC */ |
| 428 | 3015 s->plist = Qnil; |
| 867 | 3016 set_lispstringp_data (s, (Ibyte *) contents); |
| 826 | 3017 set_lispstringp_length (s, length); |
| 793 | 3018 val = wrap_string (s); |
| 771 | 3019 init_string_ascii_begin (val); |
| 3020 sledgehammer_check_ascii_begin (val); | |
| 3021 | |
| 428 | 3022 return val; |
| 3023 } | |
| 3024 | |
| 3025 | |
| 2720 | 3026 #ifndef MC_ALLOC |
| 428 | 3027 /************************************************************************/ |
| 3028 /* lcrecord lists */ | |
| 3029 /************************************************************************/ | |
| 3030 | |
| 3031 /* Lcrecord lists are used to manage the allocation of particular | |
| 1204 | 3032 sorts of lcrecords, to avoid calling basic_alloc_lcrecord() (and thus |
| 428 | 3033 malloc() and garbage-collection junk) as much as possible. |
| 3034 It is similar to the Blocktype class. | |
| 3035 | |
| 1204 | 3036 See detailed comment in lcrecord.h. |
| 3037 */ | |
| 3038 | |
| 3039 const struct memory_description free_description[] = { | |
| 2551 | 3040 { XD_LISP_OBJECT, offsetof (struct free_lcrecord_header, chain), 0, { 0 }, |
| 1204 | 3041 XD_FLAG_FREE_LISP_OBJECT }, |
| 3042 { XD_END } | |
| 3043 }; | |
| 3044 | |
| 3045 DEFINE_LRECORD_IMPLEMENTATION ("free", free, | |
| 3046 0, /*dumpable-flag*/ | |
| 3047 0, internal_object_printer, | |
| 3048 0, 0, 0, free_description, | |
| 3049 struct free_lcrecord_header); | |
| 3050 | |
| 3051 const struct memory_description lcrecord_list_description[] = { | |
| 2551 | 3052 { XD_LISP_OBJECT, offsetof (struct lcrecord_list, free), 0, { 0 }, |
| 1204 | 3053 XD_FLAG_FREE_LISP_OBJECT }, |
| 3054 { XD_END } | |
| 3055 }; | |
| 428 | 3056 |
| 3057 static Lisp_Object | |
| 3058 mark_lcrecord_list (Lisp_Object obj) | |
| 3059 { | |
| 3060 struct lcrecord_list *list = XLCRECORD_LIST (obj); | |
| 3061 Lisp_Object chain = list->free; | |
| 3062 | |
| 3063 while (!NILP (chain)) | |
| 3064 { | |
| 3065 struct lrecord_header *lheader = XRECORD_LHEADER (chain); | |
| 3066 struct free_lcrecord_header *free_header = | |
| 3067 (struct free_lcrecord_header *) lheader; | |
| 3068 | |
| 442 | 3069 gc_checking_assert |
| 3070 (/* There should be no other pointers to the free list. */ | |
| 3071 ! MARKED_RECORD_HEADER_P (lheader) | |
| 3072 && | |
| 3073 /* Only lcrecords should be here. */ | |
| 1204 | 3074 ! list->implementation->basic_p |
| 442 | 3075 && |
| 3076 /* Only free lcrecords should be here. */ | |
| 3077 free_header->lcheader.free | |
| 3078 && | |
| 3079 /* The type of the lcrecord must be right. */ | |
| 1204 | 3080 lheader->type == lrecord_type_free |
| 442 | 3081 && |
| 3082 /* So must the size. */ | |
| 1204 | 3083 (list->implementation->static_size == 0 || |
| 3084 list->implementation->static_size == list->size) | |
| 442 | 3085 ); |
| 428 | 3086 |
| 3087 MARK_RECORD_HEADER (lheader); | |
| 3088 chain = free_header->chain; | |
| 3089 } | |
| 3090 | |
| 3091 return Qnil; | |
| 3092 } | |
| 3093 | |
| 934 | 3094 DEFINE_LRECORD_IMPLEMENTATION ("lcrecord-list", lcrecord_list, |
| 3095 0, /*dumpable-flag*/ | |
| 3096 mark_lcrecord_list, internal_object_printer, | |
| 1204 | 3097 0, 0, 0, lcrecord_list_description, |
| 3098 struct lcrecord_list); | |
| 934 | 3099 |
| 428 | 3100 Lisp_Object |
| 665 | 3101 make_lcrecord_list (Elemcount size, |
| 442 | 3102 const struct lrecord_implementation *implementation) |
| 428 | 3103 { |
| 1204 | 3104 /* Don't use alloc_lcrecord_type() avoid infinite recursion |
| 3105 allocating this, */ | |
| 3106 struct lcrecord_list *p = (struct lcrecord_list *) | |
| 3107 basic_alloc_lcrecord (sizeof (struct lcrecord_list), | |
| 3108 &lrecord_lcrecord_list); | |
| 428 | 3109 |
| 3110 p->implementation = implementation; | |
| 3111 p->size = size; | |
| 3112 p->free = Qnil; | |
| 793 | 3113 return wrap_lcrecord_list (p); |
| 428 | 3114 } |
| 3115 | |
| 3116 Lisp_Object | |
| 1204 | 3117 alloc_managed_lcrecord (Lisp_Object lcrecord_list) |
| 428 | 3118 { |
| 3119 struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list); | |
| 3120 if (!NILP (list->free)) | |
| 3121 { | |
| 3122 Lisp_Object val = list->free; | |
| 3123 struct free_lcrecord_header *free_header = | |
| 3124 (struct free_lcrecord_header *) XPNTR (val); | |
| 1204 | 3125 struct lrecord_header *lheader = &free_header->lcheader.lheader; |
| 428 | 3126 |
| 3127 #ifdef ERROR_CHECK_GC | |
| 1204 | 3128 /* Major overkill here. */ |
| 428 | 3129 /* There should be no other pointers to the free list. */ |
| 442 | 3130 assert (! MARKED_RECORD_HEADER_P (lheader)); |
| 428 | 3131 /* Only free lcrecords should be here. */ |
| 3132 assert (free_header->lcheader.free); | |
| 1204 | 3133 assert (lheader->type == lrecord_type_free); |
| 3134 /* Only lcrecords should be here. */ | |
| 3135 assert (! (list->implementation->basic_p)); | |
| 3136 #if 0 /* Not used anymore, now that we set the type of the header to | |
| 3137 lrecord_type_free. */ | |
| 428 | 3138 /* The type of the lcrecord must be right. */ |
| 442 | 3139 assert (LHEADER_IMPLEMENTATION (lheader) == list->implementation); |
| 1204 | 3140 #endif /* 0 */ |
| 428 | 3141 /* So must the size. */ |
| 1204 | 3142 assert (list->implementation->static_size == 0 || |
| 3143 list->implementation->static_size == list->size); | |
| 428 | 3144 #endif /* ERROR_CHECK_GC */ |
| 442 | 3145 |
| 428 | 3146 list->free = free_header->chain; |
| 3147 free_header->lcheader.free = 0; | |
| 1204 | 3148 /* Put back the correct type, as we set it to lrecord_type_free. */ |
| 3149 lheader->type = list->implementation->lrecord_type_index; | |
| 3150 zero_sized_lcrecord (free_header, list->size); | |
| 428 | 3151 return val; |
| 3152 } | |
| 3153 else | |
| 1204 | 3154 return wrap_pointer_1 (basic_alloc_lcrecord (list->size, |
| 3155 list->implementation)); | |
| 428 | 3156 } |
| 3157 | |
| 771 | 3158 /* "Free" a Lisp object LCRECORD by placing it on its associated free list |
| 1204 | 3159 LCRECORD_LIST; next time alloc_managed_lcrecord() is called with the |
| 771 | 3160 same LCRECORD_LIST as its parameter, it will return an object from the |
| 3161 free list, which may be this one. Be VERY VERY SURE there are no | |
| 3162 pointers to this object hanging around anywhere where they might be | |
| 3163 used! | |
| 3164 | |
| 3165 The first thing this does before making any global state change is to | |
| 3166 call the finalize method of the object, if it exists. */ | |
| 3167 | |
| 428 | 3168 void |
| 3169 free_managed_lcrecord (Lisp_Object lcrecord_list, Lisp_Object lcrecord) | |
| 3170 { | |
| 3171 struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list); | |
| 3172 struct free_lcrecord_header *free_header = | |
| 3173 (struct free_lcrecord_header *) XPNTR (lcrecord); | |
| 442 | 3174 struct lrecord_header *lheader = &free_header->lcheader.lheader; |
| 3175 const struct lrecord_implementation *implementation | |
| 428 | 3176 = LHEADER_IMPLEMENTATION (lheader); |
| 3177 | |
| 771 | 3178 /* Finalizer methods may try to free objects within them, which typically |
| 3179 won't be marked and thus are scheduled for demolition. Putting them | |
| 3180 on the free list would be very bad, as we'd have xfree()d memory in | |
| 3181 the list. Even if for some reason the objects are still live | |
| 3182 (generally a logic error!), we still will have problems putting such | |
| 3183 an object on the free list right now (e.g. we'd have to avoid calling | |
| 3184 the finalizer twice, etc.). So basically, those finalizers should not | |
| 3185 be freeing any objects if during GC. Abort now to catch those | |
| 3186 problems. */ | |
| 3187 gc_checking_assert (!gc_in_progress); | |
| 3188 | |
| 428 | 3189 /* Make sure the size is correct. This will catch, for example, |
| 3190 putting a window configuration on the wrong free list. */ | |
| 1204 | 3191 gc_checking_assert (detagged_lisp_object_size (lheader) == list->size); |
| 771 | 3192 /* Make sure the object isn't already freed. */ |
| 3193 gc_checking_assert (!free_header->lcheader.free); | |
| 2367 | 3194 /* Freeing stuff in dumped memory is bad. If you trip this, you |
| 3195 may need to check for this before freeing. */ | |
| 3196 gc_checking_assert (!OBJECT_DUMPED_P (lcrecord)); | |
| 771 | 3197 |
| 428 | 3198 if (implementation->finalizer) |
| 3199 implementation->finalizer (lheader, 0); | |
| 1204 | 3200 /* Yes, there are two ways to indicate freeness -- the type is |
| 3201 lrecord_type_free or the ->free flag is set. We used to do only the | |
| 3202 latter; now we do the former as well for KKCC purposes. Probably | |
| 3203 safer in any case, as we will lose quicker this way than keeping | |
| 3204 around an lrecord of apparently correct type but bogus junk in it. */ | |
| 3205 MARK_LRECORD_AS_FREE (lheader); | |
| 428 | 3206 free_header->chain = list->free; |
| 3207 free_header->lcheader.free = 1; | |
| 3208 list->free = lcrecord; | |
| 3209 } | |
| 3210 | |
| 771 | 3211 static Lisp_Object all_lcrecord_lists[countof (lrecord_implementations_table)]; |
| 3212 | |
| 3213 void * | |
| 3214 alloc_automanaged_lcrecord (Bytecount size, | |
| 3215 const struct lrecord_implementation *imp) | |
| 3216 { | |
| 3217 if (EQ (all_lcrecord_lists[imp->lrecord_type_index], Qzero)) | |
| 3218 all_lcrecord_lists[imp->lrecord_type_index] = | |
| 3219 make_lcrecord_list (size, imp); | |
| 3220 | |
| 1204 | 3221 return XPNTR (alloc_managed_lcrecord |
| 771 | 3222 (all_lcrecord_lists[imp->lrecord_type_index])); |
| 3223 } | |
| 3224 | |
| 3225 void | |
| 3226 free_lcrecord (Lisp_Object rec) | |
| 3227 { | |
| 3228 int type = XRECORD_LHEADER (rec)->type; | |
| 3229 | |
| 3230 assert (!EQ (all_lcrecord_lists[type], Qzero)); | |
| 3231 | |
| 3232 free_managed_lcrecord (all_lcrecord_lists[type], rec); | |
| 3233 } | |
| 2720 | 3234 #endif /* not MC_ALLOC */ |
| 428 | 3235 |
| 3236 | |
| 3237 DEFUN ("purecopy", Fpurecopy, 1, 1, 0, /* | |
| 3238 Kept for compatibility, returns its argument. | |
| 3239 Old: | |
| 3240 Make a copy of OBJECT in pure storage. | |
| 3241 Recursively copies contents of vectors and cons cells. | |
| 3242 Does not copy symbols. | |
| 3243 */ | |
| 444 | 3244 (object)) |
| 428 | 3245 { |
| 444 | 3246 return object; |
| 428 | 3247 } |
| 3248 | |
| 3249 | |
| 3250 /************************************************************************/ | |
| 3251 /* Garbage Collection */ | |
| 3252 /************************************************************************/ | |
| 3253 | |
| 442 | 3254 /* All the built-in lisp object types are enumerated in `enum lrecord_type'. |
| 3255 Additional ones may be defined by a module (none yet). We leave some | |
| 3256 room in `lrecord_implementations_table' for such new lisp object types. */ | |
| 647 | 3257 const struct lrecord_implementation *lrecord_implementations_table[(int)lrecord_type_last_built_in_type + MODULE_DEFINABLE_TYPE_COUNT]; |
| 3258 int lrecord_type_count = lrecord_type_last_built_in_type; | |
| 1676 | 3259 #ifndef USE_KKCC |
| 442 | 3260 /* Object marker functions are in the lrecord_implementation structure. |
| 3261 But copying them to a parallel array is much more cache-friendly. | |
| 3262 This hack speeds up (garbage-collect) by about 5%. */ | |
| 3263 Lisp_Object (*lrecord_markers[countof (lrecord_implementations_table)]) (Lisp_Object); | |
| 1676 | 3264 #endif /* not USE_KKCC */ |
| 428 | 3265 |
| 3266 struct gcpro *gcprolist; | |
| 3267 | |
| 771 | 3268 /* We want the staticpro list relocated, but not the pointers found |
| 3269 therein, because they refer to locations in the global data segment, not | |
| 3270 in the heap; we only dump heap objects. Hence we use a trivial | |
| 3271 description, as for pointerless objects. (Note that the data segment | |
| 3272 objects, which are global variables like Qfoo or Vbar, themselves are | |
| 3273 pointers to heap objects. Each needs to be described to pdump as a | |
| 3274 "root pointer"; this happens in the call to staticpro(). */ | |
| 1204 | 3275 static const struct memory_description staticpro_description_1[] = { |
| 452 | 3276 { XD_END } |
| 3277 }; | |
| 3278 | |
| 1204 | 3279 static const struct sized_memory_description staticpro_description = { |
| 452 | 3280 sizeof (Lisp_Object *), |
| 3281 staticpro_description_1 | |
| 3282 }; | |
| 3283 | |
| 1204 | 3284 static const struct memory_description staticpros_description_1[] = { |
| 452 | 3285 XD_DYNARR_DESC (Lisp_Object_ptr_dynarr, &staticpro_description), |
| 3286 { XD_END } | |
| 3287 }; | |
| 3288 | |
| 1204 | 3289 static const struct sized_memory_description staticpros_description = { |
| 452 | 3290 sizeof (Lisp_Object_ptr_dynarr), |
| 3291 staticpros_description_1 | |
| 3292 }; | |
| 3293 | |
| 771 | 3294 #ifdef DEBUG_XEMACS |
| 3295 | |
| 1204 | 3296 static const struct memory_description staticpro_one_name_description_1[] = { |
| 2367 | 3297 { XD_ASCII_STRING, 0 }, |
| 771 | 3298 { XD_END } |
| 3299 }; | |
| 3300 | |
| 1204 | 3301 static const struct sized_memory_description staticpro_one_name_description = { |
| 771 | 3302 sizeof (char *), |
| 3303 staticpro_one_name_description_1 | |
| 3304 }; | |
| 3305 | |
| 1204 | 3306 static const struct memory_description staticpro_names_description_1[] = { |
| 771 | 3307 XD_DYNARR_DESC (char_ptr_dynarr, &staticpro_one_name_description), |
| 3308 { XD_END } | |
| 3309 }; | |
| 3310 | |
| 1204 | 3311 |
| 3312 extern const struct sized_memory_description staticpro_names_description; | |
| 3313 | |
| 3314 const struct sized_memory_description staticpro_names_description = { | |
| 771 | 3315 sizeof (char_ptr_dynarr), |
| 3316 staticpro_names_description_1 | |
| 3317 }; | |
| 3318 | |
| 3319 /* Help debug crashes gc-marking a staticpro'ed object. */ | |
| 3320 | |
| 3321 Lisp_Object_ptr_dynarr *staticpros; | |
| 3322 char_ptr_dynarr *staticpro_names; | |
| 3323 | |
| 3324 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3325 garbage collection, and for dumping. */ | |
| 3326 void | |
| 3327 staticpro_1 (Lisp_Object *varaddress, char *varname) | |
| 3328 { | |
| 3329 Dynarr_add (staticpros, varaddress); | |
| 3330 Dynarr_add (staticpro_names, varname); | |
| 1204 | 3331 dump_add_root_lisp_object (varaddress); |
| 771 | 3332 } |
| 3333 | |
| 3334 | |
| 3335 Lisp_Object_ptr_dynarr *staticpros_nodump; | |
| 3336 char_ptr_dynarr *staticpro_nodump_names; | |
| 3337 | |
| 3338 /* Mark the Lisp_Object at heap VARADDRESS as a root object for | |
| 3339 garbage collection, but not for dumping. (See below.) */ | |
| 3340 void | |
| 3341 staticpro_nodump_1 (Lisp_Object *varaddress, char *varname) | |
| 3342 { | |
| 3343 Dynarr_add (staticpros_nodump, varaddress); | |
| 3344 Dynarr_add (staticpro_nodump_names, varname); | |
| 3345 } | |
| 3346 | |
| 996 | 3347 #ifdef HAVE_SHLIB |
| 3348 /* Stop treating the Lisp_Object at non-heap VARADDRESS as a root object | |
| 3349 for garbage collection, but not for dumping. */ | |
| 3350 void | |
| 3351 unstaticpro_nodump_1 (Lisp_Object *varaddress, char *varname) | |
| 3352 { | |
| 3353 Dynarr_delete_object (staticpros, varaddress); | |
| 3354 Dynarr_delete_object (staticpro_names, varname); | |
| 3355 } | |
| 3356 #endif | |
| 3357 | |
| 771 | 3358 #else /* not DEBUG_XEMACS */ |
| 3359 | |
| 452 | 3360 Lisp_Object_ptr_dynarr *staticpros; |
| 3361 | |
| 3362 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3363 garbage collection, and for dumping. */ | |
| 428 | 3364 void |
| 3365 staticpro (Lisp_Object *varaddress) | |
| 3366 { | |
| 452 | 3367 Dynarr_add (staticpros, varaddress); |
| 1204 | 3368 dump_add_root_lisp_object (varaddress); |
| 428 | 3369 } |
| 3370 | |
| 442 | 3371 |
| 452 | 3372 Lisp_Object_ptr_dynarr *staticpros_nodump; |
| 3373 | |
| 771 | 3374 /* Mark the Lisp_Object at heap VARADDRESS as a root object for garbage |
| 3375 collection, but not for dumping. This is used for objects where the | |
| 3376 only sure pointer is in the heap (rather than in the global data | |
| 3377 segment, as must be the case for pdump root pointers), but not inside of | |
| 3378 another Lisp object (where it will be marked as a result of that Lisp | |
| 3379 object's mark method). The call to staticpro_nodump() must occur *BOTH* | |
| 3380 at initialization time and at "reinitialization" time (startup, after | |
| 3381 pdump load.) (For example, this is the case with the predicate symbols | |
| 3382 for specifier and coding system types. The pointer to this symbol is | |
| 3383 inside of a methods structure, which is allocated on the heap. The | |
| 3384 methods structure will be written out to the pdump data file, and may be | |
| 3385 reloaded at a different address.) | |
| 3386 | |
| 3387 #### The necessity for reinitialization is a bug in pdump. Pdump should | |
| 3388 automatically regenerate the staticpro()s for these symbols when it | |
| 3389 loads the data in. */ | |
| 3390 | |
| 428 | 3391 void |
| 3392 staticpro_nodump (Lisp_Object *varaddress) | |
| 3393 { | |
| 452 | 3394 Dynarr_add (staticpros_nodump, varaddress); |
| 428 | 3395 } |
| 3396 | |
| 996 | 3397 #ifdef HAVE_SHLIB |
| 3398 /* Unmark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3399 garbage collection, but not for dumping. */ | |
| 3400 void | |
| 3401 unstaticpro_nodump (Lisp_Object *varaddress) | |
| 3402 { | |
| 3403 Dynarr_delete_object (staticpros, varaddress); | |
| 3404 } | |
| 3405 #endif | |
| 3406 | |
| 771 | 3407 #endif /* not DEBUG_XEMACS */ |
| 3408 | |
| 2720 | 3409 |
| 3410 | |
| 3411 | |
| 3412 | |
| 3413 #ifdef MC_ALLOC | |
| 3414 static const struct memory_description mcpro_description_1[] = { | |
| 3415 { XD_END } | |
| 3416 }; | |
| 3417 | |
| 3418 static const struct sized_memory_description mcpro_description = { | |
| 3419 sizeof (Lisp_Object *), | |
| 3420 mcpro_description_1 | |
| 3421 }; | |
| 3422 | |
| 3423 static const struct memory_description mcpros_description_1[] = { | |
| 3424 XD_DYNARR_DESC (Lisp_Object_dynarr, &mcpro_description), | |
| 3425 { XD_END } | |
| 3426 }; | |
| 3427 | |
| 3428 static const struct sized_memory_description mcpros_description = { | |
| 3429 sizeof (Lisp_Object_dynarr), | |
| 3430 mcpros_description_1 | |
| 3431 }; | |
| 3432 | |
| 3433 #ifdef DEBUG_XEMACS | |
| 3434 | |
| 3435 static const struct memory_description mcpro_one_name_description_1[] = { | |
| 3436 { XD_ASCII_STRING, 0 }, | |
| 3437 { XD_END } | |
| 3438 }; | |
| 3439 | |
| 3440 static const struct sized_memory_description mcpro_one_name_description = { | |
| 3441 sizeof (char *), | |
| 3442 mcpro_one_name_description_1 | |
| 3443 }; | |
| 3444 | |
| 3445 static const struct memory_description mcpro_names_description_1[] = { | |
| 3446 XD_DYNARR_DESC (char_ptr_dynarr, &mcpro_one_name_description), | |
| 3447 { XD_END } | |
| 3448 }; | |
| 3449 | |
| 3450 extern const struct sized_memory_description mcpro_names_description; | |
| 3451 | |
| 3452 const struct sized_memory_description mcpro_names_description = { | |
| 3453 sizeof (char_ptr_dynarr), | |
| 3454 mcpro_names_description_1 | |
| 3455 }; | |
| 3456 | |
| 3457 /* Help debug crashes gc-marking a mcpro'ed object. */ | |
| 3458 | |
| 3459 Lisp_Object_dynarr *mcpros; | |
| 3460 char_ptr_dynarr *mcpro_names; | |
| 3461 | |
| 3462 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3463 garbage collection, and for dumping. */ | |
| 3464 void | |
| 3465 mcpro_1 (Lisp_Object varaddress, char *varname) | |
| 3466 { | |
| 3467 Dynarr_add (mcpros, varaddress); | |
| 3468 Dynarr_add (mcpro_names, varname); | |
| 3469 } | |
| 3470 | |
| 3471 #else /* not DEBUG_XEMACS */ | |
| 3472 | |
| 3473 Lisp_Object_dynarr *mcpros; | |
| 3474 | |
| 3475 /* Mark the Lisp_Object at non-heap VARADDRESS as a root object for | |
| 3476 garbage collection, and for dumping. */ | |
| 3477 void | |
| 3478 mcpro (Lisp_Object varaddress) | |
| 3479 { | |
| 3480 Dynarr_add (mcpros, varaddress); | |
| 3481 } | |
| 3482 | |
| 3483 #endif /* not DEBUG_XEMACS */ | |
| 3484 #endif /* MC_ALLOC */ | |
| 3485 | |
| 442 | 3486 #ifdef ERROR_CHECK_GC |
| 2720 | 3487 #ifdef MC_ALLOC |
| 3488 #define GC_CHECK_LHEADER_INVARIANTS(lheader) do { \ | |
| 3489 struct lrecord_header * GCLI_lh = (lheader); \ | |
| 3490 assert (GCLI_lh != 0); \ | |
| 3491 assert (GCLI_lh->type < (unsigned int) lrecord_type_count); \ | |
| 3492 } while (0) | |
| 3493 #else /* not MC_ALLOC */ | |
| 442 | 3494 #define GC_CHECK_LHEADER_INVARIANTS(lheader) do { \ |
| 3495 struct lrecord_header * GCLI_lh = (lheader); \ | |
| 3496 assert (GCLI_lh != 0); \ | |
| 647 | 3497 assert (GCLI_lh->type < (unsigned int) lrecord_type_count); \ |
| 442 | 3498 assert (! C_READONLY_RECORD_HEADER_P (GCLI_lh) || \ |
| 3499 (MARKED_RECORD_HEADER_P (GCLI_lh) && \ | |
| 3500 LISP_READONLY_RECORD_HEADER_P (GCLI_lh))); \ | |
| 3501 } while (0) | |
| 2720 | 3502 #endif /* not MC_ALLOC */ |
| 442 | 3503 #else |
| 3504 #define GC_CHECK_LHEADER_INVARIANTS(lheader) | |
| 3505 #endif | |
| 3506 | |
| 934 | 3507 |
| 1204 | 3508 static const struct memory_description lisp_object_description_1[] = { |
| 3509 { XD_LISP_OBJECT, 0 }, | |
| 3510 { XD_END } | |
| 3511 }; | |
| 3512 | |
| 3513 const struct sized_memory_description lisp_object_description = { | |
| 3514 sizeof (Lisp_Object), | |
| 3515 lisp_object_description_1 | |
| 3516 }; | |
| 3517 | |
| 3518 #if defined (USE_KKCC) || defined (PDUMP) | |
| 934 | 3519 |
| 3520 /* This function extracts the value of a count variable described somewhere | |
| 3521 else in the description. It is converted corresponding to the type */ | |
| 1204 | 3522 EMACS_INT |
| 3523 lispdesc_indirect_count_1 (EMACS_INT code, | |
| 3524 const struct memory_description *idesc, | |
| 3525 const void *idata) | |
| 934 | 3526 { |
| 3527 EMACS_INT count; | |
| 3528 const void *irdata; | |
| 3529 | |
| 3530 int line = XD_INDIRECT_VAL (code); | |
| 3531 int delta = XD_INDIRECT_DELTA (code); | |
| 3532 | |
| 1204 | 3533 irdata = ((char *) idata) + |
| 3534 lispdesc_indirect_count (idesc[line].offset, idesc, idata); | |
| 934 | 3535 switch (idesc[line].type) |
| 3536 { | |
| 3537 case XD_BYTECOUNT: | |
| 1204 | 3538 count = * (Bytecount *) irdata; |
| 934 | 3539 break; |
| 3540 case XD_ELEMCOUNT: | |
| 1204 | 3541 count = * (Elemcount *) irdata; |
| 934 | 3542 break; |
| 3543 case XD_HASHCODE: | |
| 1204 | 3544 count = * (Hashcode *) irdata; |
| 934 | 3545 break; |
| 3546 case XD_INT: | |
| 1204 | 3547 count = * (int *) irdata; |
| 934 | 3548 break; |
| 3549 case XD_LONG: | |
| 1204 | 3550 count = * (long *) irdata; |
| 934 | 3551 break; |
| 3552 default: | |
| 3553 stderr_out ("Unsupported count type : %d (line = %d, code = %ld)\n", | |
| 1204 | 3554 idesc[line].type, line, (long) code); |
| 2666 | 3555 #if defined(USE_KKCC) && defined(DEBUG_XEMACS) |
| 2645 | 3556 if (gc_in_progress) |
| 3557 kkcc_backtrace (); | |
| 3558 #endif | |
| 1204 | 3559 #ifdef PDUMP |
| 3560 if (in_pdump) | |
| 3561 pdump_backtrace (); | |
| 3562 #endif | |
| 934 | 3563 count = 0; /* warning suppression */ |
| 2500 | 3564 ABORT (); |
| 934 | 3565 } |
| 3566 count += delta; | |
| 3567 return count; | |
| 3568 } | |
| 3569 | |
| 1204 | 3570 /* SDESC is a "description map" (basically, a list of offsets used for |
| 3571 successive indirections) and OBJ is the first object to indirect off of. | |
| 3572 Return the description ultimately found. */ | |
| 3573 | |
| 3574 const struct sized_memory_description * | |
| 3575 lispdesc_indirect_description_1 (const void *obj, | |
| 3576 const struct sized_memory_description *sdesc) | |
| 934 | 3577 { |
| 3578 int pos; | |
| 3579 | |
| 1204 | 3580 for (pos = 0; sdesc[pos].size >= 0; pos++) |
| 3581 obj = * (const void **) ((const char *) obj + sdesc[pos].size); | |
| 3582 | |
| 3583 return (const struct sized_memory_description *) obj; | |
| 3584 } | |
| 3585 | |
| 3586 /* Compute the size of the data at RDATA, described by a single entry | |
| 3587 DESC1 in a description array. OBJ and DESC are used for | |
| 3588 XD_INDIRECT references. */ | |
| 3589 | |
| 3590 static Bytecount | |
| 3591 lispdesc_one_description_line_size (void *rdata, | |
| 3592 const struct memory_description *desc1, | |
| 3593 const void *obj, | |
| 3594 const struct memory_description *desc) | |
| 3595 { | |
| 3596 union_switcheroo: | |
| 3597 switch (desc1->type) | |
| 934 | 3598 { |
| 1204 | 3599 case XD_LISP_OBJECT_ARRAY: |
| 3600 { | |
| 3601 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj); | |
| 3602 return (val * sizeof (Lisp_Object)); | |
| 3603 } | |
| 3604 case XD_LISP_OBJECT: | |
| 3605 case XD_LO_LINK: | |
| 3606 return sizeof (Lisp_Object); | |
| 3607 case XD_OPAQUE_PTR: | |
| 3608 return sizeof (void *); | |
| 2367 | 3609 case XD_BLOCK_PTR: |
| 1204 | 3610 { |
| 3611 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj); | |
| 3612 return val * sizeof (void *); | |
| 3613 } | |
| 2367 | 3614 case XD_BLOCK_ARRAY: |
| 1204 | 3615 { |
| 3616 EMACS_INT val = lispdesc_indirect_count (desc1->data1, desc, obj); | |
| 3617 | |
| 3618 return (val * | |
| 2367 | 3619 lispdesc_block_size |
| 2551 | 3620 (rdata, |
| 3621 lispdesc_indirect_description (obj, desc1->data2.descr))); | |
| 1204 | 3622 } |
| 3623 case XD_OPAQUE_DATA_PTR: | |
| 3624 return sizeof (void *); | |
| 3625 case XD_UNION_DYNAMIC_SIZE: | |
| 3626 { | |
| 3627 /* If an explicit size was given in the first-level structure | |
| 3628 description, use it; else compute size based on current union | |
| 3629 constant. */ | |
| 3630 const struct sized_memory_description *sdesc = | |
| 2551 | 3631 lispdesc_indirect_description (obj, desc1->data2.descr); |
| 1204 | 3632 if (sdesc->size) |
| 3633 return sdesc->size; | |
| 3634 else | |
| 3635 { | |
| 3636 desc1 = lispdesc_process_xd_union (desc1, desc, obj); | |
| 3637 if (desc1) | |
| 3638 goto union_switcheroo; | |
| 934 | 3639 break; |
| 1204 | 3640 } |
| 3641 } | |
| 3642 case XD_UNION: | |
| 3643 { | |
| 3644 /* If an explicit size was given in the first-level structure | |
| 3645 description, use it; else compute size based on maximum of all | |
| 3646 possible structures. */ | |
| 3647 const struct sized_memory_description *sdesc = | |
| 2551 | 3648 lispdesc_indirect_description (obj, desc1->data2.descr); |
| 1204 | 3649 if (sdesc->size) |
| 3650 return sdesc->size; | |
| 3651 else | |
| 3652 { | |
| 3653 int count; | |
| 3654 Bytecount max_size = -1, size; | |
| 3655 | |
| 3656 desc1 = sdesc->description; | |
| 3657 | |
| 3658 for (count = 0; desc1[count].type != XD_END; count++) | |
| 3659 { | |
| 3660 size = lispdesc_one_description_line_size (rdata, | |
| 3661 &desc1[count], | |
| 3662 obj, desc); | |
| 3663 if (size > max_size) | |
| 3664 max_size = size; | |
| 3665 } | |
| 3666 return max_size; | |
| 3667 } | |
| 934 | 3668 } |
| 2367 | 3669 case XD_ASCII_STRING: |
| 1204 | 3670 return sizeof (void *); |
| 3671 case XD_DOC_STRING: | |
| 3672 return sizeof (void *); | |
| 3673 case XD_INT_RESET: | |
| 3674 return sizeof (int); | |
| 3675 case XD_BYTECOUNT: | |
| 3676 return sizeof (Bytecount); | |
| 3677 case XD_ELEMCOUNT: | |
| 3678 return sizeof (Elemcount); | |
| 3679 case XD_HASHCODE: | |
| 3680 return sizeof (Hashcode); | |
| 3681 case XD_INT: | |
| 3682 return sizeof (int); | |
| 3683 case XD_LONG: | |
| 3684 return sizeof (long); | |
| 3685 default: | |
| 3686 stderr_out ("Unsupported dump type : %d\n", desc1->type); | |
| 2500 | 3687 ABORT (); |
| 934 | 3688 } |
| 3689 | |
| 1204 | 3690 return 0; |
| 934 | 3691 } |
| 3692 | |
| 3693 | |
| 1204 | 3694 /* Return the size of the memory block (NOT necessarily a structure!) |
| 3695 described by SDESC and pointed to by OBJ. If SDESC records an | |
| 3696 explicit size (i.e. non-zero), it is simply returned; otherwise, | |
| 3697 the size is calculated by the maximum offset and the size of the | |
| 3698 object at that offset, rounded up to the maximum alignment. In | |
| 3699 this case, we may need the object, for example when retrieving an | |
| 3700 "indirect count" of an inlined array (the count is not constant, | |
| 3701 but is specified by one of the elements of the memory block). (It | |
| 3702 is generally not a problem if we return an overly large size -- we | |
| 3703 will simply end up reserving more space than necessary; but if the | |
| 3704 size is too small we could be in serious trouble, in particular | |
| 3705 with nested inlined structures, where there may be alignment | |
| 3706 padding in the middle of a block. #### In fact there is an (at | |
| 3707 least theoretical) problem with an overly large size -- we may | |
| 3708 trigger a protection fault when reading from invalid memory. We | |
| 3709 need to handle this -- perhaps in a stupid but dependable way, | |
| 3710 i.e. by trapping SIGSEGV and SIGBUS.) */ | |
| 3711 | |
| 3712 Bytecount | |
| 2367 | 3713 lispdesc_block_size_1 (const void *obj, Bytecount size, |
| 3714 const struct memory_description *desc) | |
| 934 | 3715 { |
| 1204 | 3716 EMACS_INT max_offset = -1; |
| 934 | 3717 int max_offset_pos = -1; |
| 3718 int pos; | |
| 2367 | 3719 |
| 3720 if (size) | |
| 3721 return size; | |
| 934 | 3722 |
| 3723 for (pos = 0; desc[pos].type != XD_END; pos++) | |
| 3724 { | |
| 1204 | 3725 EMACS_INT offset = lispdesc_indirect_count (desc[pos].offset, desc, obj); |
| 3726 if (offset == max_offset) | |
| 934 | 3727 { |
| 3728 stderr_out ("Two relocatable elements at same offset?\n"); | |
| 2500 | 3729 ABORT (); |
| 934 | 3730 } |
| 1204 | 3731 else if (offset > max_offset) |
| 934 | 3732 { |
| 1204 | 3733 max_offset = offset; |
| 934 | 3734 max_offset_pos = pos; |
| 3735 } | |
| 3736 } | |
| 3737 | |
| 3738 if (max_offset_pos < 0) | |
| 3739 return 0; | |
| 3740 | |
| 1204 | 3741 { |
| 3742 Bytecount size_at_max; | |
| 3743 size_at_max = | |
| 3744 lispdesc_one_description_line_size ((char *) obj + max_offset, | |
| 3745 &desc[max_offset_pos], obj, desc); | |
| 3746 | |
| 3747 /* We have no way of knowing the required alignment for this structure, | |
| 3748 so just make it maximally aligned. */ | |
| 3749 return MAX_ALIGN_SIZE (max_offset + size_at_max); | |
| 3750 } | |
| 3751 } | |
| 3752 | |
| 3753 #endif /* defined (USE_KKCC) || defined (PDUMP) */ | |
| 3754 | |
| 2720 | 3755 #ifdef MC_ALLOC |
| 3756 #define GC_CHECK_NOT_FREE(lheader) \ | |
| 3757 gc_checking_assert (! LRECORD_FREE_P (lheader)); | |
| 3758 #else /* MC_ALLOC */ | |
| 1276 | 3759 #define GC_CHECK_NOT_FREE(lheader) \ |
| 2720 | 3760 gc_checking_assert (! LRECORD_FREE_P (lheader)); \ |
| 1276 | 3761 gc_checking_assert (LHEADER_IMPLEMENTATION (lheader)->basic_p || \ |
| 3762 ! ((struct lcrecord_header *) lheader)->free) | |
| 2720 | 3763 #endif /* MC_ALLOC */ |
| 1276 | 3764 |
| 1204 | 3765 #ifdef USE_KKCC |
| 3766 /* The following functions implement the new mark algorithm. | |
| 3767 They mark objects according to their descriptions. They | |
| 3768 are modeled on the corresponding pdumper procedures. */ | |
| 3769 | |
| 2666 | 3770 #ifdef DEBUG_XEMACS |
| 3771 /* The backtrace for the KKCC mark functions. */ | |
| 3772 #define KKCC_INIT_BT_STACK_SIZE 4096 | |
| 1676 | 3773 |
| 3774 typedef struct | |
| 3775 { | |
| 2645 | 3776 void *obj; |
| 3777 const struct memory_description *desc; | |
| 3778 int pos; | |
| 2666 | 3779 } kkcc_bt_stack_entry; |
| 3780 | |
| 3781 static kkcc_bt_stack_entry *kkcc_bt; | |
| 3782 static int kkcc_bt_stack_size; | |
| 2645 | 3783 static int kkcc_bt_depth = 0; |
| 3784 | |
| 2666 | 3785 static void |
| 3786 kkcc_bt_init (void) | |
| 3787 { | |
| 3788 kkcc_bt_depth = 0; | |
| 3789 kkcc_bt_stack_size = KKCC_INIT_BT_STACK_SIZE; | |
| 3790 kkcc_bt = (kkcc_bt_stack_entry *) | |
| 3791 malloc (kkcc_bt_stack_size * sizeof (kkcc_bt_stack_entry)); | |
| 3792 if (!kkcc_bt) | |
| 3793 { | |
| 3794 stderr_out ("KKCC backtrace stack init failed for size %d\n", | |
| 3795 kkcc_bt_stack_size); | |
| 3796 ABORT (); | |
| 3797 } | |
| 3798 } | |
| 2645 | 3799 |
| 3800 void | |
| 3801 kkcc_backtrace (void) | |
| 3802 { | |
| 3803 int i; | |
| 3804 stderr_out ("KKCC mark stack backtrace :\n"); | |
| 3805 for (i = kkcc_bt_depth - 1; i >= 0; i--) | |
| 3806 { | |
| 2650 | 3807 Lisp_Object obj = wrap_pointer_1 (kkcc_bt[i].obj); |
| 2645 | 3808 stderr_out (" [%d]", i); |
| 2720 | 3809 #ifdef MC_ALLOC |
| 3810 if ((XRECORD_LHEADER (obj)->type >= lrecord_type_last_built_in_type) | |
| 3811 #else /* not MC_ALLOC */ | |
| 2650 | 3812 if ((XRECORD_LHEADER (obj)->type >= lrecord_type_free) |
| 2720 | 3813 #endif /* not MC_ALLOC */ |
| 2650 | 3814 || (!LRECORDP (obj)) |
| 3815 || (!XRECORD_LHEADER_IMPLEMENTATION (obj))) | |
| 2645 | 3816 { |
| 3817 stderr_out (" non Lisp Object"); | |
| 3818 } | |
| 3819 else | |
| 3820 { | |
| 3821 stderr_out (" %s", | |
| 2650 | 3822 XRECORD_LHEADER_IMPLEMENTATION (obj)->name); |
| 2645 | 3823 } |
| 3824 stderr_out (" (addr: 0x%x, desc: 0x%x, ", | |
| 3825 (int) kkcc_bt[i].obj, | |
| 3826 (int) kkcc_bt[i].desc); | |
| 3827 if (kkcc_bt[i].pos >= 0) | |
| 3828 stderr_out ("pos: %d)\n", kkcc_bt[i].pos); | |
| 3829 else | |
| 3830 stderr_out ("root set)\n"); | |
| 3831 } | |
| 3832 } | |
| 3833 | |
| 3834 static void | |
| 2666 | 3835 kkcc_bt_stack_realloc (void) |
| 3836 { | |
| 3837 kkcc_bt_stack_size *= 2; | |
| 3838 kkcc_bt = (kkcc_bt_stack_entry *) | |
| 3839 realloc (kkcc_bt, kkcc_bt_stack_size * sizeof (kkcc_bt_stack_entry)); | |
| 3840 if (!kkcc_bt) | |
| 3841 { | |
| 3842 stderr_out ("KKCC backtrace stack realloc failed for size %d\n", | |
| 3843 kkcc_bt_stack_size); | |
| 3844 ABORT (); | |
| 3845 } | |
| 3846 } | |
| 3847 | |
| 3848 static void | |
| 3849 kkcc_bt_free (void) | |
| 3850 { | |
| 3851 free (kkcc_bt); | |
| 3852 kkcc_bt = 0; | |
| 3853 kkcc_bt_stack_size = 0; | |
| 3854 } | |
| 3855 | |
| 3856 static void | |
| 2645 | 3857 kkcc_bt_push (void *obj, const struct memory_description *desc, |
| 3858 int level, int pos) | |
| 3859 { | |
| 3860 kkcc_bt_depth = level; | |
| 3861 kkcc_bt[kkcc_bt_depth].obj = obj; | |
| 3862 kkcc_bt[kkcc_bt_depth].desc = desc; | |
| 3863 kkcc_bt[kkcc_bt_depth].pos = pos; | |
| 3864 kkcc_bt_depth++; | |
| 2666 | 3865 if (kkcc_bt_depth >= kkcc_bt_stack_size) |
| 3866 kkcc_bt_stack_realloc (); | |
| 2645 | 3867 } |
| 3868 | |
| 3869 #else /* not DEBUG_XEMACS */ | |
| 2666 | 3870 #define kkcc_bt_init() |
| 2645 | 3871 #define kkcc_bt_push(obj, desc, level, pos) |
| 3872 #endif /* not DEBUG_XEMACS */ | |
| 3873 | |
| 2666 | 3874 /* Object memory descriptions are in the lrecord_implementation structure. |
| 3875 But copying them to a parallel array is much more cache-friendly. */ | |
| 3876 const struct memory_description *lrecord_memory_descriptions[countof (lrecord_implementations_table)]; | |
| 3877 | |
| 3878 /* the initial stack size in kkcc_gc_stack_entries */ | |
| 3879 #define KKCC_INIT_GC_STACK_SIZE 16384 | |
| 3880 | |
| 3881 typedef struct | |
| 3882 { | |
| 3883 void *data; | |
| 3884 const struct memory_description *desc; | |
| 3885 #ifdef DEBUG_XEMACS | |
| 3886 int level; | |
| 3887 int pos; | |
| 3888 #endif | |
| 3889 } kkcc_gc_stack_entry; | |
| 3890 | |
| 3891 static kkcc_gc_stack_entry *kkcc_gc_stack_ptr; | |
| 3892 static kkcc_gc_stack_entry *kkcc_gc_stack_top; | |
| 3893 static kkcc_gc_stack_entry *kkcc_gc_stack_last_entry; | |
| 3894 static int kkcc_gc_stack_size; | |
| 3895 | |
| 1676 | 3896 static void |
| 3897 kkcc_gc_stack_init (void) | |
| 3898 { | |
| 3899 kkcc_gc_stack_size = KKCC_INIT_GC_STACK_SIZE; | |
| 3900 kkcc_gc_stack_ptr = (kkcc_gc_stack_entry *) | |
| 3901 malloc (kkcc_gc_stack_size * sizeof (kkcc_gc_stack_entry)); | |
| 3902 if (!kkcc_gc_stack_ptr) | |
| 3903 { | |
| 3904 stderr_out ("stack init failed for size %d\n", kkcc_gc_stack_size); | |
| 2666 | 3905 ABORT (); |
| 1676 | 3906 } |
| 3907 kkcc_gc_stack_top = kkcc_gc_stack_ptr - 1; | |
| 3908 kkcc_gc_stack_last_entry = kkcc_gc_stack_ptr + kkcc_gc_stack_size - 1; | |
| 3909 } | |
| 3910 | |
| 3911 static void | |
| 3912 kkcc_gc_stack_free (void) | |
| 3913 { | |
| 3914 free (kkcc_gc_stack_ptr); | |
| 3915 kkcc_gc_stack_ptr = 0; | |
| 3916 kkcc_gc_stack_top = 0; | |
| 3917 kkcc_gc_stack_size = 0; | |
| 3918 } | |
| 3919 | |
| 3920 static void | |
| 3921 kkcc_gc_stack_realloc (void) | |
| 3922 { | |
| 3923 int current_offset = (int)(kkcc_gc_stack_top - kkcc_gc_stack_ptr); | |
| 3924 kkcc_gc_stack_size *= 2; | |
| 3925 kkcc_gc_stack_ptr = (kkcc_gc_stack_entry *) | |
| 3926 realloc (kkcc_gc_stack_ptr, | |
| 3927 kkcc_gc_stack_size * sizeof (kkcc_gc_stack_entry)); | |
| 3928 if (!kkcc_gc_stack_ptr) | |
| 3929 { | |
| 3930 stderr_out ("stack realloc failed for size %d\n", kkcc_gc_stack_size); | |
| 2666 | 3931 ABORT (); |
| 1676 | 3932 } |
| 3933 kkcc_gc_stack_top = kkcc_gc_stack_ptr + current_offset; | |
| 3934 kkcc_gc_stack_last_entry = kkcc_gc_stack_ptr + kkcc_gc_stack_size - 1; | |
| 3935 } | |
| 3936 | |
| 3937 #define KKCC_GC_STACK_FULL (kkcc_gc_stack_top >= kkcc_gc_stack_last_entry) | |
| 3938 #define KKCC_GC_STACK_EMPTY (kkcc_gc_stack_top < kkcc_gc_stack_ptr) | |
| 3939 | |
| 3940 static void | |
| 2645 | 3941 #ifdef DEBUG_XEMACS |
| 3942 kkcc_gc_stack_push_1 (void *data, const struct memory_description *desc, | |
| 3943 int level, int pos) | |
| 3944 #else | |
| 3945 kkcc_gc_stack_push_1 (void *data, const struct memory_description *desc) | |
| 3946 #endif | |
| 1676 | 3947 { |
| 3948 if (KKCC_GC_STACK_FULL) | |
| 3949 kkcc_gc_stack_realloc(); | |
| 3950 kkcc_gc_stack_top++; | |
| 3951 kkcc_gc_stack_top->data = data; | |
| 3952 kkcc_gc_stack_top->desc = desc; | |
| 2645 | 3953 #ifdef DEBUG_XEMACS |
| 3954 kkcc_gc_stack_top->level = level; | |
| 3955 kkcc_gc_stack_top->pos = pos; | |
| 3956 #endif | |
| 3957 } | |
| 3958 | |
| 3959 #ifdef DEBUG_XEMACS | |
| 3960 #define kkcc_gc_stack_push(data, desc, level, pos) \ | |
| 3961 kkcc_gc_stack_push_1 (data, desc, level, pos) | |
| 3962 #else | |
| 3963 #define kkcc_gc_stack_push(data, desc, level, pos) \ | |
| 3964 kkcc_gc_stack_push_1 (data, desc) | |
| 3965 #endif | |
| 1676 | 3966 |
| 3967 static kkcc_gc_stack_entry * | |
| 3968 kkcc_gc_stack_pop (void) | |
| 3969 { | |
| 3970 if (KKCC_GC_STACK_EMPTY) | |
| 3971 return 0; | |
| 3972 kkcc_gc_stack_top--; | |
| 3973 return kkcc_gc_stack_top + 1; | |
| 3974 } | |
| 3975 | |
| 3976 void | |
| 2645 | 3977 #ifdef DEBUG_XEMACS |
| 3978 kkcc_gc_stack_push_lisp_object_1 (Lisp_Object obj, int level, int pos) | |
| 3979 #else | |
| 3980 kkcc_gc_stack_push_lisp_object_1 (Lisp_Object obj) | |
| 3981 #endif | |
| 1676 | 3982 { |
| 3983 if (XTYPE (obj) == Lisp_Type_Record) | |
| 3984 { | |
| 3985 struct lrecord_header *lheader = XRECORD_LHEADER (obj); | |
| 3986 const struct memory_description *desc; | |
| 3987 GC_CHECK_LHEADER_INVARIANTS (lheader); | |
| 3988 desc = RECORD_DESCRIPTION (lheader); | |
| 3989 if (! MARKED_RECORD_HEADER_P (lheader)) | |
| 3990 { | |
| 3991 MARK_RECORD_HEADER (lheader); | |
| 2666 | 3992 kkcc_gc_stack_push ((void*) lheader, desc, level, pos); |
| 1676 | 3993 } |
| 3994 } | |
| 3995 } | |
| 3996 | |
| 2645 | 3997 #ifdef DEBUG_XEMACS |
| 3998 #define kkcc_gc_stack_push_lisp_object(obj, level, pos) \ | |
| 3999 kkcc_gc_stack_push_lisp_object_1 (obj, level, pos) | |
| 4000 #else | |
| 4001 #define kkcc_gc_stack_push_lisp_object(obj, level, pos) \ | |
| 4002 kkcc_gc_stack_push_lisp_object_1 (obj) | |
| 4003 #endif | |
| 4004 | |
| 1265 | 4005 #ifdef ERROR_CHECK_GC |
| 4006 #define KKCC_DO_CHECK_FREE(obj, allow_free) \ | |
| 4007 do \ | |
| 4008 { \ | |
| 4009 if (!allow_free && XTYPE (obj) == Lisp_Type_Record) \ | |
| 4010 { \ | |
| 4011 struct lrecord_header *lheader = XRECORD_LHEADER (obj); \ | |
| 4012 GC_CHECK_NOT_FREE (lheader); \ | |
| 4013 } \ | |
| 4014 } while (0) | |
| 4015 #else | |
| 4016 #define KKCC_DO_CHECK_FREE(obj, allow_free) | |
| 4017 #endif | |
| 1204 | 4018 |
| 4019 #ifdef ERROR_CHECK_GC | |
| 2645 | 4020 #ifdef DEBUG_XEMACS |
| 1598 | 4021 static void |
| 2645 | 4022 mark_object_maybe_checking_free_1 (Lisp_Object obj, int allow_free, |
| 4023 int level, int pos) | |
| 4024 #else | |
| 4025 static void | |
| 4026 mark_object_maybe_checking_free_1 (Lisp_Object obj, int allow_free) | |
| 4027 #endif | |
| 1204 | 4028 { |
| 1265 | 4029 KKCC_DO_CHECK_FREE (obj, allow_free); |
| 2645 | 4030 kkcc_gc_stack_push_lisp_object (obj, level, pos); |
| 4031 } | |
| 4032 | |
| 4033 #ifdef DEBUG_XEMACS | |
| 4034 #define mark_object_maybe_checking_free(obj, allow_free, level, pos) \ | |
| 4035 mark_object_maybe_checking_free_1 (obj, allow_free, level, pos) | |
| 1204 | 4036 #else |
| 2645 | 4037 #define mark_object_maybe_checking_free(obj, allow_free, level, pos) \ |
| 4038 mark_object_maybe_checking_free_1 (obj, allow_free) | |
| 4039 #endif | |
| 4040 #else /* not ERROR_CHECK_GC */ | |
| 4041 #define mark_object_maybe_checking_free(obj, allow_free, level, pos) \ | |
| 4042 kkcc_gc_stack_push_lisp_object (obj, level, pos) | |
| 4043 #endif /* not ERROR_CHECK_GC */ | |
| 1204 | 4044 |
| 934 | 4045 |
| 4046 /* This function loops all elements of a struct pointer and calls | |
| 4047 mark_with_description with each element. */ | |
| 4048 static void | |
| 2645 | 4049 #ifdef DEBUG_XEMACS |
| 4050 mark_struct_contents_1 (const void *data, | |
| 4051 const struct sized_memory_description *sdesc, | |
| 4052 int count, int level, int pos) | |
| 4053 #else | |
| 4054 mark_struct_contents_1 (const void *data, | |
| 1204 | 4055 const struct sized_memory_description *sdesc, |
| 4056 int count) | |
| 2645 | 4057 #endif |
| 934 | 4058 { |
| 4059 int i; | |
| 4060 Bytecount elsize; | |
| 2367 | 4061 elsize = lispdesc_block_size (data, sdesc); |
| 934 | 4062 |
| 4063 for (i = 0; i < count; i++) | |
| 4064 { | |
| 2645 | 4065 kkcc_gc_stack_push (((char *) data) + elsize * i, sdesc->description, |
| 4066 level, pos); | |
| 934 | 4067 } |
| 4068 } | |
| 4069 | |
| 2645 | 4070 #ifdef DEBUG_XEMACS |
| 4071 #define mark_struct_contents(data, sdesc, count, level, pos) \ | |
| 4072 mark_struct_contents_1 (data, sdesc, count, level, pos) | |
| 4073 #else | |
| 4074 #define mark_struct_contents(data, sdesc, count, level, pos) \ | |
| 4075 mark_struct_contents_1 (data, sdesc, count) | |
| 4076 #endif | |
| 1598 | 4077 |
| 4078 /* This function implements the KKCC mark algorithm. | |
| 4079 Instead of calling mark_object, all the alive Lisp_Objects are pushed | |
| 4080 on the kkcc_gc_stack. This function processes all elements on the stack | |
| 4081 according to their descriptions. */ | |
| 4082 static void | |
| 4083 kkcc_marking (void) | |
| 4084 { | |
| 4085 kkcc_gc_stack_entry *stack_entry = 0; | |
| 4086 void *data = 0; | |
| 4087 const struct memory_description *desc = 0; | |
| 4088 int pos; | |
| 2645 | 4089 #ifdef DEBUG_XEMACS |
| 4090 int level = 0; | |
| 2666 | 4091 kkcc_bt_init (); |
| 2645 | 4092 #endif |
| 1598 | 4093 |
| 4094 while ((stack_entry = kkcc_gc_stack_pop ()) != 0) | |
| 4095 { | |
| 4096 data = stack_entry->data; | |
| 4097 desc = stack_entry->desc; | |
| 2645 | 4098 #ifdef DEBUG_XEMACS |
| 4099 level = stack_entry->level + 1; | |
| 4100 #endif | |
| 4101 | |
| 4102 kkcc_bt_push (data, desc, stack_entry->level, stack_entry->pos); | |
| 1598 | 4103 |
| 2720 | 4104 gc_checking_assert (data); |
| 4105 gc_checking_assert (desc); | |
| 4106 | |
| 1598 | 4107 for (pos = 0; desc[pos].type != XD_END; pos++) |
| 4108 { | |
| 4109 const struct memory_description *desc1 = &desc[pos]; | |
| 4110 const void *rdata = | |
| 4111 (const char *) data + lispdesc_indirect_count (desc1->offset, | |
| 4112 desc, data); | |
| 4113 union_switcheroo: | |
| 4114 | |
| 4115 /* If the flag says don't mark, then don't mark. */ | |
| 4116 if ((desc1->flags) & XD_FLAG_NO_KKCC) | |
| 4117 continue; | |
| 4118 | |
| 4119 switch (desc1->type) | |
| 4120 { | |
| 4121 case XD_BYTECOUNT: | |
| 4122 case XD_ELEMCOUNT: | |
| 4123 case XD_HASHCODE: | |
| 4124 case XD_INT: | |
| 4125 case XD_LONG: | |
| 4126 case XD_INT_RESET: | |
| 4127 case XD_LO_LINK: | |
| 4128 case XD_OPAQUE_PTR: | |
| 4129 case XD_OPAQUE_DATA_PTR: | |
| 2367 | 4130 case XD_ASCII_STRING: |
| 1598 | 4131 case XD_DOC_STRING: |
| 4132 break; | |
| 4133 case XD_LISP_OBJECT: | |
| 4134 { | |
| 4135 const Lisp_Object *stored_obj = (const Lisp_Object *) rdata; | |
| 4136 | |
| 4137 /* Because of the way that tagged objects work (pointers and | |
| 4138 Lisp_Objects have the same representation), XD_LISP_OBJECT | |
| 4139 can be used for untagged pointers. They might be NULL, | |
| 4140 though. */ | |
| 4141 if (EQ (*stored_obj, Qnull_pointer)) | |
| 4142 break; | |
| 2720 | 4143 #ifdef MC_ALLOC |
| 4144 mark_object_maybe_checking_free (*stored_obj, 0, level, pos); | |
| 4145 #else /* not MC_ALLOC */ | |
| 1598 | 4146 mark_object_maybe_checking_free |
| 2645 | 4147 (*stored_obj, (desc1->flags) & XD_FLAG_FREE_LISP_OBJECT, |
| 4148 level, pos); | |
| 2775 | 4149 #endif /* not MC_ALLOC */ |
| 1598 | 4150 break; |
| 4151 } | |
| 4152 case XD_LISP_OBJECT_ARRAY: | |
| 4153 { | |
| 4154 int i; | |
| 4155 EMACS_INT count = | |
| 4156 lispdesc_indirect_count (desc1->data1, desc, data); | |
| 4157 | |
| 4158 for (i = 0; i < count; i++) | |
| 4159 { | |
| 4160 const Lisp_Object *stored_obj = | |
| 4161 (const Lisp_Object *) rdata + i; | |
| 4162 | |
| 4163 if (EQ (*stored_obj, Qnull_pointer)) | |
| 4164 break; | |
| 2720 | 4165 #ifdef MC_ALLOC |
| 4166 mark_object_maybe_checking_free (*stored_obj, 0, level, pos); | |
| 4167 #else /* not MC_ALLOC */ | |
| 1598 | 4168 mark_object_maybe_checking_free |
| 2645 | 4169 (*stored_obj, (desc1->flags) & XD_FLAG_FREE_LISP_OBJECT, |
| 4170 level, pos); | |
| 2720 | 4171 #endif /* not MC_ALLOC */ |
| 1598 | 4172 } |
| 4173 break; | |
| 4174 } | |
| 2367 | 4175 case XD_BLOCK_PTR: |
| 1598 | 4176 { |
| 4177 EMACS_INT count = lispdesc_indirect_count (desc1->data1, desc, | |
| 4178 data); | |
| 4179 const struct sized_memory_description *sdesc = | |
| 2551 | 4180 lispdesc_indirect_description (data, desc1->data2.descr); |
| 1598 | 4181 const char *dobj = * (const char **) rdata; |
| 4182 if (dobj) | |
| 2645 | 4183 mark_struct_contents (dobj, sdesc, count, level, pos); |
| 1598 | 4184 break; |
| 4185 } | |
| 2367 | 4186 case XD_BLOCK_ARRAY: |
| 1598 | 4187 { |
| 4188 EMACS_INT count = lispdesc_indirect_count (desc1->data1, desc, | |
| 4189 data); | |
| 4190 const struct sized_memory_description *sdesc = | |
| 2551 | 4191 lispdesc_indirect_description (data, desc1->data2.descr); |
| 1598 | 4192 |
| 2645 | 4193 mark_struct_contents (rdata, sdesc, count, level, pos); |
| 1598 | 4194 break; |
| 4195 } | |
| 4196 case XD_UNION: | |
| 4197 case XD_UNION_DYNAMIC_SIZE: | |
| 4198 desc1 = lispdesc_process_xd_union (desc1, desc, data); | |
| 4199 if (desc1) | |
| 4200 goto union_switcheroo; | |
| 4201 break; | |
| 4202 | |
| 4203 default: | |
| 4204 stderr_out ("Unsupported description type : %d\n", desc1->type); | |
| 2645 | 4205 kkcc_backtrace (); |
| 2500 | 4206 ABORT (); |
| 1598 | 4207 } |
| 4208 } | |
| 4209 } | |
| 2666 | 4210 #ifdef DEBUG_XEMACS |
| 4211 kkcc_bt_free (); | |
| 4212 #endif | |
| 1598 | 4213 } |
| 934 | 4214 #endif /* USE_KKCC */ |
| 4215 | |
| 428 | 4216 /* Mark reference to a Lisp_Object. If the object referred to has not been |
| 4217 seen yet, recursively mark all the references contained in it. */ | |
| 4218 | |
| 4219 void | |
| 2286 | 4220 mark_object ( |
| 4221 #ifdef USE_KKCC | |
| 4222 Lisp_Object UNUSED (obj) | |
| 4223 #else | |
| 4224 Lisp_Object obj | |
| 4225 #endif | |
| 4226 ) | |
| 428 | 4227 { |
| 1598 | 4228 #ifdef USE_KKCC |
| 4229 /* this code should never be reached when configured for KKCC */ | |
| 4230 stderr_out ("KKCC: Invalid mark_object call.\n"); | |
| 4231 stderr_out ("Replace mark_object with kkcc_gc_stack_push_lisp_object.\n"); | |
| 2500 | 4232 ABORT (); |
| 1676 | 4233 #else /* not USE_KKCC */ |
| 1598 | 4234 |
| 428 | 4235 tail_recurse: |
| 4236 | |
| 4237 /* Checks we used to perform */ | |
| 4238 /* if (EQ (obj, Qnull_pointer)) return; */ | |
| 4239 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return; */ | |
| 4240 /* if (PURIFIED (XPNTR (obj))) return; */ | |
| 4241 | |
| 4242 if (XTYPE (obj) == Lisp_Type_Record) | |
| 4243 { | |
| 4244 struct lrecord_header *lheader = XRECORD_LHEADER (obj); | |
| 442 | 4245 |
| 4246 GC_CHECK_LHEADER_INVARIANTS (lheader); | |
| 4247 | |
| 1204 | 4248 /* We handle this separately, above, so we can mark free objects */ |
| 1265 | 4249 GC_CHECK_NOT_FREE (lheader); |
| 1204 | 4250 |
| 442 | 4251 /* All c_readonly objects have their mark bit set, |
| 4252 so that we only need to check the mark bit here. */ | |
| 4253 if (! MARKED_RECORD_HEADER_P (lheader)) | |
| 428 | 4254 { |
| 4255 MARK_RECORD_HEADER (lheader); | |
| 442 | 4256 |
| 1598 | 4257 if (RECORD_MARKER (lheader)) |
| 4258 { | |
| 4259 obj = RECORD_MARKER (lheader) (obj); | |
| 4260 if (!NILP (obj)) goto tail_recurse; | |
| 4261 } | |
| 428 | 4262 } |
| 4263 } | |
| 1676 | 4264 #endif /* not KKCC */ |
| 428 | 4265 } |
| 4266 | |
| 4267 | |
| 2720 | 4268 #ifndef MC_ALLOC |
| 428 | 4269 static int gc_count_num_short_string_in_use; |
| 647 | 4270 static Bytecount gc_count_string_total_size; |
| 4271 static Bytecount gc_count_short_string_total_size; | |
| 428 | 4272 |
| 4273 /* static int gc_count_total_records_used, gc_count_records_total_size; */ | |
| 4274 | |
| 4275 | |
| 4276 /* stats on lcrecords in use - kinda kludgy */ | |
| 4277 | |
| 4278 static struct | |
| 4279 { | |
| 4280 int instances_in_use; | |
| 4281 int bytes_in_use; | |
| 4282 int instances_freed; | |
| 4283 int bytes_freed; | |
| 4284 int instances_on_free_list; | |
| 707 | 4285 } lcrecord_stats [countof (lrecord_implementations_table) |
| 4286 + MODULE_DEFINABLE_TYPE_COUNT]; | |
| 428 | 4287 |
| 4288 static void | |
| 442 | 4289 tick_lcrecord_stats (const struct lrecord_header *h, int free_p) |
| 428 | 4290 { |
| 647 | 4291 int type_index = h->type; |
| 428 | 4292 |
| 4293 if (((struct lcrecord_header *) h)->free) | |
| 4294 { | |
| 442 | 4295 gc_checking_assert (!free_p); |
| 428 | 4296 lcrecord_stats[type_index].instances_on_free_list++; |
| 4297 } | |
| 4298 else | |
| 4299 { | |
| 1204 | 4300 Bytecount sz = detagged_lisp_object_size (h); |
| 4301 | |
| 428 | 4302 if (free_p) |
| 4303 { | |
| 4304 lcrecord_stats[type_index].instances_freed++; | |
| 4305 lcrecord_stats[type_index].bytes_freed += sz; | |
| 4306 } | |
| 4307 else | |
| 4308 { | |
| 4309 lcrecord_stats[type_index].instances_in_use++; | |
| 4310 lcrecord_stats[type_index].bytes_in_use += sz; | |
| 4311 } | |
| 4312 } | |
| 4313 } | |
| 2720 | 4314 #endif /* not MC_ALLOC */ |
| 428 | 4315 |
| 4316 | |
| 2720 | 4317 #ifndef MC_ALLOC |
| 428 | 4318 /* Free all unmarked records */ |
| 4319 static void | |
| 4320 sweep_lcrecords_1 (struct lcrecord_header **prev, int *used) | |
| 4321 { | |
| 4322 struct lcrecord_header *header; | |
| 4323 int num_used = 0; | |
| 4324 /* int total_size = 0; */ | |
| 4325 | |
| 4326 xzero (lcrecord_stats); /* Reset all statistics to 0. */ | |
| 4327 | |
| 4328 /* First go through and call all the finalize methods. | |
| 4329 Then go through and free the objects. There used to | |
| 4330 be only one loop here, with the call to the finalizer | |
| 4331 occurring directly before the xfree() below. That | |
| 4332 is marginally faster but much less safe -- if the | |
| 4333 finalize method for an object needs to reference any | |
| 4334 other objects contained within it (and many do), | |
| 4335 we could easily be screwed by having already freed that | |
| 4336 other object. */ | |
| 4337 | |
| 4338 for (header = *prev; header; header = header->next) | |
| 4339 { | |
| 4340 struct lrecord_header *h = &(header->lheader); | |
| 442 | 4341 |
| 4342 GC_CHECK_LHEADER_INVARIANTS (h); | |
| 4343 | |
| 4344 if (! MARKED_RECORD_HEADER_P (h) && ! header->free) | |
| 428 | 4345 { |
| 4346 if (LHEADER_IMPLEMENTATION (h)->finalizer) | |
| 4347 LHEADER_IMPLEMENTATION (h)->finalizer (h, 0); | |
| 4348 } | |
| 4349 } | |
| 4350 | |
| 4351 for (header = *prev; header; ) | |
| 4352 { | |
| 4353 struct lrecord_header *h = &(header->lheader); | |
| 442 | 4354 if (MARKED_RECORD_HEADER_P (h)) |
| 428 | 4355 { |
| 442 | 4356 if (! C_READONLY_RECORD_HEADER_P (h)) |
| 428 | 4357 UNMARK_RECORD_HEADER (h); |
| 4358 num_used++; | |
| 4359 /* total_size += n->implementation->size_in_bytes (h);*/ | |
| 440 | 4360 /* #### May modify header->next on a C_READONLY lcrecord */ |
| 428 | 4361 prev = &(header->next); |
| 4362 header = *prev; | |
| 4363 tick_lcrecord_stats (h, 0); | |
| 4364 } | |
| 4365 else | |
| 4366 { | |
| 4367 struct lcrecord_header *next = header->next; | |
| 4368 *prev = next; | |
| 4369 tick_lcrecord_stats (h, 1); | |
| 4370 /* used to call finalizer right here. */ | |
| 1726 | 4371 xfree (header, struct lcrecord_header *); |
| 428 | 4372 header = next; |
| 4373 } | |
| 4374 } | |
| 4375 *used = num_used; | |
| 4376 /* *total = total_size; */ | |
| 4377 } | |
| 4378 | |
| 4379 /* And the Lord said: Thou shalt use the `c-backslash-region' command | |
| 4380 to make macros prettier. */ | |
| 4381 | |
| 4382 #ifdef ERROR_CHECK_GC | |
| 4383 | |
| 771 | 4384 #define SWEEP_FIXED_TYPE_BLOCK_1(typename, obj_type, lheader) \ |
| 428 | 4385 do { \ |
| 4386 struct typename##_block *SFTB_current; \ | |
| 4387 int SFTB_limit; \ | |
| 4388 int num_free = 0, num_used = 0; \ | |
| 4389 \ | |
| 444 | 4390 for (SFTB_current = current_##typename##_block, \ |
| 428 | 4391 SFTB_limit = current_##typename##_block_index; \ |
| 4392 SFTB_current; \ | |
| 4393 ) \ | |
| 4394 { \ | |
| 4395 int SFTB_iii; \ | |
| 4396 \ | |
| 4397 for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++) \ | |
| 4398 { \ | |
| 4399 obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]); \ | |
| 4400 \ | |
| 454 | 4401 if (LRECORD_FREE_P (SFTB_victim)) \ |
| 428 | 4402 { \ |
| 4403 num_free++; \ | |
| 4404 } \ | |
| 4405 else if (C_READONLY_RECORD_HEADER_P (&SFTB_victim->lheader)) \ | |
| 4406 { \ | |
| 4407 num_used++; \ | |
| 4408 } \ | |
| 442 | 4409 else if (! MARKED_RECORD_HEADER_P (&SFTB_victim->lheader)) \ |
| 428 | 4410 { \ |
| 4411 num_free++; \ | |
| 4412 FREE_FIXED_TYPE (typename, obj_type, SFTB_victim); \ | |
| 4413 } \ | |
| 4414 else \ | |
| 4415 { \ | |
| 4416 num_used++; \ | |
| 4417 UNMARK_##typename (SFTB_victim); \ | |
| 4418 } \ | |
| 4419 } \ | |
| 4420 SFTB_current = SFTB_current->prev; \ | |
| 4421 SFTB_limit = countof (current_##typename##_block->block); \ | |
| 4422 } \ | |
| 4423 \ | |
| 4424 gc_count_num_##typename##_in_use = num_used; \ | |
| 4425 gc_count_num_##typename##_freelist = num_free; \ | |
| 4426 } while (0) | |
| 4427 | |
| 4428 #else /* !ERROR_CHECK_GC */ | |
| 4429 | |
| 771 | 4430 #define SWEEP_FIXED_TYPE_BLOCK_1(typename, obj_type, lheader) \ |
| 4431 do { \ | |
| 4432 struct typename##_block *SFTB_current; \ | |
| 4433 struct typename##_block **SFTB_prev; \ | |
| 4434 int SFTB_limit; \ | |
| 4435 int num_free = 0, num_used = 0; \ | |
| 4436 \ | |
| 4437 typename##_free_list = 0; \ | |
| 4438 \ | |
| 4439 for (SFTB_prev = ¤t_##typename##_block, \ | |
| 4440 SFTB_current = current_##typename##_block, \ | |
| 4441 SFTB_limit = current_##typename##_block_index; \ | |
| 4442 SFTB_current; \ | |
| 4443 ) \ | |
| 4444 { \ | |
| 4445 int SFTB_iii; \ | |
| 4446 int SFTB_empty = 1; \ | |
| 4447 Lisp_Free *SFTB_old_free_list = typename##_free_list; \ | |
| 4448 \ | |
| 4449 for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++) \ | |
| 4450 { \ | |
| 4451 obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]); \ | |
| 4452 \ | |
| 4453 if (LRECORD_FREE_P (SFTB_victim)) \ | |
| 4454 { \ | |
| 4455 num_free++; \ | |
| 4456 PUT_FIXED_TYPE_ON_FREE_LIST (typename, obj_type, SFTB_victim); \ | |
| 4457 } \ | |
| 4458 else if (C_READONLY_RECORD_HEADER_P (&SFTB_victim->lheader)) \ | |
| 4459 { \ | |
| 4460 SFTB_empty = 0; \ | |
| 4461 num_used++; \ | |
| 4462 } \ | |
| 4463 else if (! MARKED_RECORD_HEADER_P (&SFTB_victim->lheader)) \ | |
| 4464 { \ | |
| 4465 num_free++; \ | |
| 4466 FREE_FIXED_TYPE (typename, obj_type, SFTB_victim); \ | |
| 4467 } \ | |
| 4468 else \ | |
| 4469 { \ | |
| 4470 SFTB_empty = 0; \ | |
| 4471 num_used++; \ | |
| 4472 UNMARK_##typename (SFTB_victim); \ | |
| 4473 } \ | |
| 4474 } \ | |
| 4475 if (!SFTB_empty) \ | |
| 4476 { \ | |
| 4477 SFTB_prev = &(SFTB_current->prev); \ | |
| 4478 SFTB_current = SFTB_current->prev; \ | |
| 4479 } \ | |
| 4480 else if (SFTB_current == current_##typename##_block \ | |
| 4481 && !SFTB_current->prev) \ | |
| 4482 { \ | |
| 4483 /* No real point in freeing sole allocation block */ \ | |
| 4484 break; \ | |
| 4485 } \ | |
| 4486 else \ | |
| 4487 { \ | |
| 4488 struct typename##_block *SFTB_victim_block = SFTB_current; \ | |
| 4489 if (SFTB_victim_block == current_##typename##_block) \ | |
| 4490 current_##typename##_block_index \ | |
| 4491 = countof (current_##typename##_block->block); \ | |
| 4492 SFTB_current = SFTB_current->prev; \ | |
| 4493 { \ | |
| 4494 *SFTB_prev = SFTB_current; \ | |
| 1726 | 4495 xfree (SFTB_victim_block, struct typename##_block *); \ |
| 771 | 4496 /* Restore free list to what it was before victim was swept */ \ |
| 4497 typename##_free_list = SFTB_old_free_list; \ | |
| 4498 num_free -= SFTB_limit; \ | |
| 4499 } \ | |
| 4500 } \ | |
| 4501 SFTB_limit = countof (current_##typename##_block->block); \ | |
| 4502 } \ | |
| 4503 \ | |
| 4504 gc_count_num_##typename##_in_use = num_used; \ | |
| 4505 gc_count_num_##typename##_freelist = num_free; \ | |
| 428 | 4506 } while (0) |
| 4507 | |
| 4508 #endif /* !ERROR_CHECK_GC */ | |
| 4509 | |
| 771 | 4510 #define SWEEP_FIXED_TYPE_BLOCK(typename, obj_type) \ |
| 4511 SWEEP_FIXED_TYPE_BLOCK_1 (typename, obj_type, lheader) | |
| 4512 | |
| 2720 | 4513 #endif /* not MC_ALLOC */ |
| 4514 | |
| 428 | 4515 |
| 2720 | 4516 #ifndef MC_ALLOC |
| 428 | 4517 static void |
| 4518 sweep_conses (void) | |
| 4519 { | |
| 4520 #define UNMARK_cons(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4521 #define ADDITIONAL_FREE_cons(ptr) | |
| 4522 | |
| 440 | 4523 SWEEP_FIXED_TYPE_BLOCK (cons, Lisp_Cons); |
| 428 | 4524 } |
| 2720 | 4525 #endif /* not MC_ALLOC */ |
| 428 | 4526 |
| 4527 /* Explicitly free a cons cell. */ | |
| 4528 void | |
| 853 | 4529 free_cons (Lisp_Object cons) |
| 428 | 4530 { |
| 2720 | 4531 #ifndef MC_ALLOC /* to avoid compiler warning */ |
| 853 | 4532 Lisp_Cons *ptr = XCONS (cons); |
| 2720 | 4533 #endif /* MC_ALLOC */ |
| 853 | 4534 |
| 428 | 4535 #ifdef ERROR_CHECK_GC |
| 2720 | 4536 #ifdef MC_ALLOC |
| 4537 Lisp_Cons *ptr = XCONS (cons); | |
| 4538 #endif /* MC_ALLOC */ | |
| 428 | 4539 /* If the CAR is not an int, then it will be a pointer, which will |
| 4540 always be four-byte aligned. If this cons cell has already been | |
| 4541 placed on the free list, however, its car will probably contain | |
| 4542 a chain pointer to the next cons on the list, which has cleverly | |
| 4543 had all its 0's and 1's inverted. This allows for a quick | |
| 1204 | 4544 check to make sure we're not freeing something already freed. |
| 4545 | |
| 4546 NOTE: This check may not be necessary. Freeing an object sets its | |
| 4547 type to lrecord_type_free, which will trip up the XCONS() above -- as | |
| 4548 well as a check in FREE_FIXED_TYPE(). */ | |
| 853 | 4549 if (POINTER_TYPE_P (XTYPE (cons_car (ptr)))) |
| 4550 ASSERT_VALID_POINTER (XPNTR (cons_car (ptr))); | |
| 428 | 4551 #endif /* ERROR_CHECK_GC */ |
| 4552 | |
| 2720 | 4553 #ifdef MC_ALLOC |
| 4554 free_lrecord (cons); | |
| 4555 #else /* not MC_ALLOC */ | |
| 440 | 4556 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (cons, Lisp_Cons, ptr); |
| 2720 | 4557 #endif /* not MC_ALLOC */ |
| 428 | 4558 } |
| 4559 | |
| 4560 /* explicitly free a list. You **must make sure** that you have | |
| 4561 created all the cons cells that make up this list and that there | |
| 4562 are no pointers to any of these cons cells anywhere else. If there | |
| 4563 are, you will lose. */ | |
| 4564 | |
| 4565 void | |
| 4566 free_list (Lisp_Object list) | |
| 4567 { | |
| 4568 Lisp_Object rest, next; | |
| 4569 | |
| 4570 for (rest = list; !NILP (rest); rest = next) | |
| 4571 { | |
| 4572 next = XCDR (rest); | |
| 853 | 4573 free_cons (rest); |
| 428 | 4574 } |
| 4575 } | |
| 4576 | |
| 4577 /* explicitly free an alist. You **must make sure** that you have | |
| 4578 created all the cons cells that make up this alist and that there | |
| 4579 are no pointers to any of these cons cells anywhere else. If there | |
| 4580 are, you will lose. */ | |
| 4581 | |
| 4582 void | |
| 4583 free_alist (Lisp_Object alist) | |
| 4584 { | |
| 4585 Lisp_Object rest, next; | |
| 4586 | |
| 4587 for (rest = alist; !NILP (rest); rest = next) | |
| 4588 { | |
| 4589 next = XCDR (rest); | |
| 853 | 4590 free_cons (XCAR (rest)); |
| 4591 free_cons (rest); | |
| 428 | 4592 } |
| 4593 } | |
| 4594 | |
| 2720 | 4595 #ifndef MC_ALLOC |
| 428 | 4596 static void |
| 4597 sweep_compiled_functions (void) | |
| 4598 { | |
| 4599 #define UNMARK_compiled_function(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 945 | 4600 #define ADDITIONAL_FREE_compiled_function(ptr) \ |
| 1726 | 4601 if (ptr->args_in_array) xfree (ptr->args, Lisp_Object *) |
| 428 | 4602 |
| 4603 SWEEP_FIXED_TYPE_BLOCK (compiled_function, Lisp_Compiled_Function); | |
| 4604 } | |
| 4605 | |
| 4606 static void | |
| 4607 sweep_floats (void) | |
| 4608 { | |
| 4609 #define UNMARK_float(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4610 #define ADDITIONAL_FREE_float(ptr) | |
| 4611 | |
| 440 | 4612 SWEEP_FIXED_TYPE_BLOCK (float, Lisp_Float); |
| 428 | 4613 } |
| 4614 | |
| 1983 | 4615 #ifdef HAVE_BIGNUM |
| 4616 static void | |
| 4617 sweep_bignums (void) | |
| 4618 { | |
| 4619 #define UNMARK_bignum(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4620 #define ADDITIONAL_FREE_bignum(ptr) bignum_fini (ptr->data) | |
| 4621 | |
| 4622 SWEEP_FIXED_TYPE_BLOCK (bignum, Lisp_Bignum); | |
| 4623 } | |
| 4624 #endif /* HAVE_BIGNUM */ | |
| 4625 | |
| 4626 #ifdef HAVE_RATIO | |
| 4627 static void | |
| 4628 sweep_ratios (void) | |
| 4629 { | |
| 4630 #define UNMARK_ratio(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4631 #define ADDITIONAL_FREE_ratio(ptr) ratio_fini (ptr->data) | |
| 4632 | |
| 4633 SWEEP_FIXED_TYPE_BLOCK (ratio, Lisp_Ratio); | |
| 4634 } | |
| 4635 #endif /* HAVE_RATIO */ | |
| 4636 | |
| 4637 #ifdef HAVE_BIGFLOAT | |
| 4638 static void | |
| 4639 sweep_bigfloats (void) | |
| 4640 { | |
| 4641 #define UNMARK_bigfloat(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4642 #define ADDITIONAL_FREE_bigfloat(ptr) bigfloat_fini (ptr->bf) | |
| 4643 | |
| 4644 SWEEP_FIXED_TYPE_BLOCK (bigfloat, Lisp_Bigfloat); | |
| 4645 } | |
| 4646 #endif | |
| 4647 | |
| 428 | 4648 static void |
| 4649 sweep_symbols (void) | |
| 4650 { | |
| 4651 #define UNMARK_symbol(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4652 #define ADDITIONAL_FREE_symbol(ptr) | |
| 4653 | |
| 440 | 4654 SWEEP_FIXED_TYPE_BLOCK (symbol, Lisp_Symbol); |
| 428 | 4655 } |
| 4656 | |
| 4657 static void | |
| 4658 sweep_extents (void) | |
| 4659 { | |
| 4660 #define UNMARK_extent(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4661 #define ADDITIONAL_FREE_extent(ptr) | |
| 4662 | |
| 4663 SWEEP_FIXED_TYPE_BLOCK (extent, struct extent); | |
| 4664 } | |
| 4665 | |
| 4666 static void | |
| 4667 sweep_events (void) | |
| 4668 { | |
| 4669 #define UNMARK_event(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4670 #define ADDITIONAL_FREE_event(ptr) | |
| 4671 | |
| 440 | 4672 SWEEP_FIXED_TYPE_BLOCK (event, Lisp_Event); |
| 428 | 4673 } |
| 2720 | 4674 #endif /* not MC_ALLOC */ |
| 428 | 4675 |
| 1204 | 4676 #ifdef EVENT_DATA_AS_OBJECTS |
| 934 | 4677 |
| 2720 | 4678 #ifndef MC_ALLOC |
| 934 | 4679 static void |
| 4680 sweep_key_data (void) | |
| 4681 { | |
| 4682 #define UNMARK_key_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4683 #define ADDITIONAL_FREE_key_data(ptr) | |
| 4684 | |
| 4685 SWEEP_FIXED_TYPE_BLOCK (key_data, Lisp_Key_Data); | |
| 4686 } | |
| 2720 | 4687 #endif /* not MC_ALLOC */ |
| 934 | 4688 |
| 1204 | 4689 void |
| 4690 free_key_data (Lisp_Object ptr) | |
| 4691 { | |
| 2720 | 4692 #ifdef MC_ALLOC |
| 4693 free_lrecord (ptr); | |
| 4694 #else /* not MC_ALLOC */ | |
| 1204 | 4695 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (key_data, Lisp_Key_Data, XKEY_DATA (ptr)); |
| 2720 | 4696 #endif /* not MC_ALLOC */ |
| 4697 } | |
| 4698 | |
| 4699 #ifndef MC_ALLOC | |
| 934 | 4700 static void |
| 4701 sweep_button_data (void) | |
| 4702 { | |
| 4703 #define UNMARK_button_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4704 #define ADDITIONAL_FREE_button_data(ptr) | |
| 4705 | |
| 4706 SWEEP_FIXED_TYPE_BLOCK (button_data, Lisp_Button_Data); | |
| 4707 } | |
| 2720 | 4708 #endif /* not MC_ALLOC */ |
| 934 | 4709 |
| 1204 | 4710 void |
| 4711 free_button_data (Lisp_Object ptr) | |
| 4712 { | |
| 2720 | 4713 #ifdef MC_ALLOC |
| 4714 free_lrecord (ptr); | |
| 4715 #else /* not MC_ALLOC */ | |
| 1204 | 4716 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (button_data, Lisp_Button_Data, XBUTTON_DATA (ptr)); |
| 2720 | 4717 #endif /* not MC_ALLOC */ |
| 4718 } | |
| 4719 | |
| 4720 #ifndef MC_ALLOC | |
| 934 | 4721 static void |
| 4722 sweep_motion_data (void) | |
| 4723 { | |
| 4724 #define UNMARK_motion_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4725 #define ADDITIONAL_FREE_motion_data(ptr) | |
| 4726 | |
| 4727 SWEEP_FIXED_TYPE_BLOCK (motion_data, Lisp_Motion_Data); | |
| 4728 } | |
| 2720 | 4729 #endif /* not MC_ALLOC */ |
| 934 | 4730 |
| 1204 | 4731 void |
| 4732 free_motion_data (Lisp_Object ptr) | |
| 4733 { | |
| 2720 | 4734 #ifdef MC_ALLOC |
| 4735 free_lrecord (ptr); | |
| 4736 #else /* not MC_ALLOC */ | |
| 1204 | 4737 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (motion_data, Lisp_Motion_Data, XMOTION_DATA (ptr)); |
| 2720 | 4738 #endif /* not MC_ALLOC */ |
| 4739 } | |
| 4740 | |
| 4741 #ifndef MC_ALLOC | |
| 934 | 4742 static void |
| 4743 sweep_process_data (void) | |
| 4744 { | |
| 4745 #define UNMARK_process_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4746 #define ADDITIONAL_FREE_process_data(ptr) | |
| 4747 | |
| 4748 SWEEP_FIXED_TYPE_BLOCK (process_data, Lisp_Process_Data); | |
| 4749 } | |
| 2720 | 4750 #endif /* not MC_ALLOC */ |
| 934 | 4751 |
| 1204 | 4752 void |
| 4753 free_process_data (Lisp_Object ptr) | |
| 4754 { | |
| 2720 | 4755 #ifdef MC_ALLOC |
| 4756 free_lrecord (ptr); | |
| 4757 #else /* not MC_ALLOC */ | |
| 1204 | 4758 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (process_data, Lisp_Process_Data, XPROCESS_DATA (ptr)); |
| 2720 | 4759 #endif /* not MC_ALLOC */ |
| 4760 } | |
| 4761 | |
| 4762 #ifndef MC_ALLOC | |
| 934 | 4763 static void |
| 4764 sweep_timeout_data (void) | |
| 4765 { | |
| 4766 #define UNMARK_timeout_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4767 #define ADDITIONAL_FREE_timeout_data(ptr) | |
| 4768 | |
| 4769 SWEEP_FIXED_TYPE_BLOCK (timeout_data, Lisp_Timeout_Data); | |
| 4770 } | |
| 2720 | 4771 #endif /* not MC_ALLOC */ |
| 934 | 4772 |
| 1204 | 4773 void |
| 4774 free_timeout_data (Lisp_Object ptr) | |
| 4775 { | |
| 2720 | 4776 #ifdef MC_ALLOC |
| 4777 free_lrecord (ptr); | |
| 4778 #else /* not MC_ALLOC */ | |
| 1204 | 4779 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (timeout_data, Lisp_Timeout_Data, XTIMEOUT_DATA (ptr)); |
| 2720 | 4780 #endif /* not MC_ALLOC */ |
| 4781 } | |
| 4782 | |
| 4783 #ifndef MC_ALLOC | |
| 934 | 4784 static void |
| 4785 sweep_magic_data (void) | |
| 4786 { | |
| 4787 #define UNMARK_magic_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4788 #define ADDITIONAL_FREE_magic_data(ptr) | |
| 4789 | |
| 4790 SWEEP_FIXED_TYPE_BLOCK (magic_data, Lisp_Magic_Data); | |
| 4791 } | |
| 2720 | 4792 #endif /* not MC_ALLOC */ |
| 934 | 4793 |
| 1204 | 4794 void |
| 4795 free_magic_data (Lisp_Object ptr) | |
| 4796 { | |
| 2720 | 4797 #ifdef MC_ALLOC |
| 4798 free_lrecord (ptr); | |
| 4799 #else /* not MC_ALLOC */ | |
| 1204 | 4800 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (magic_data, Lisp_Magic_Data, XMAGIC_DATA (ptr)); |
| 2720 | 4801 #endif /* not MC_ALLOC */ |
| 4802 } | |
| 4803 | |
| 4804 #ifndef MC_ALLOC | |
| 934 | 4805 static void |
| 4806 sweep_magic_eval_data (void) | |
| 4807 { | |
| 4808 #define UNMARK_magic_eval_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4809 #define ADDITIONAL_FREE_magic_eval_data(ptr) | |
| 4810 | |
| 4811 SWEEP_FIXED_TYPE_BLOCK (magic_eval_data, Lisp_Magic_Eval_Data); | |
| 4812 } | |
| 2720 | 4813 #endif /* not MC_ALLOC */ |
| 934 | 4814 |
| 1204 | 4815 void |
| 4816 free_magic_eval_data (Lisp_Object ptr) | |
| 4817 { | |
| 2720 | 4818 #ifdef MC_ALLOC |
| 4819 free_lrecord (ptr); | |
| 4820 #else /* not MC_ALLOC */ | |
| 1204 | 4821 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (magic_eval_data, Lisp_Magic_Eval_Data, XMAGIC_EVAL_DATA (ptr)); |
| 2720 | 4822 #endif /* not MC_ALLOC */ |
| 4823 } | |
| 4824 | |
| 4825 #ifndef MC_ALLOC | |
| 934 | 4826 static void |
| 4827 sweep_eval_data (void) | |
| 4828 { | |
| 4829 #define UNMARK_eval_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4830 #define ADDITIONAL_FREE_eval_data(ptr) | |
| 4831 | |
| 4832 SWEEP_FIXED_TYPE_BLOCK (eval_data, Lisp_Eval_Data); | |
| 4833 } | |
| 2720 | 4834 #endif /* not MC_ALLOC */ |
| 934 | 4835 |
| 1204 | 4836 void |
| 4837 free_eval_data (Lisp_Object ptr) | |
| 4838 { | |
| 2720 | 4839 #ifdef MC_ALLOC |
| 4840 free_lrecord (ptr); | |
| 4841 #else /* not MC_ALLOC */ | |
| 1204 | 4842 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (eval_data, Lisp_Eval_Data, XEVAL_DATA (ptr)); |
| 2720 | 4843 #endif /* not MC_ALLOC */ |
| 4844 } | |
| 4845 | |
| 4846 #ifndef MC_ALLOC | |
| 934 | 4847 static void |
| 4848 sweep_misc_user_data (void) | |
| 4849 { | |
| 4850 #define UNMARK_misc_user_data(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4851 #define ADDITIONAL_FREE_misc_user_data(ptr) | |
| 4852 | |
| 4853 SWEEP_FIXED_TYPE_BLOCK (misc_user_data, Lisp_Misc_User_Data); | |
| 4854 } | |
| 2720 | 4855 #endif /* not MC_ALLOC */ |
| 934 | 4856 |
| 1204 | 4857 void |
| 4858 free_misc_user_data (Lisp_Object ptr) | |
| 4859 { | |
| 2720 | 4860 #ifdef MC_ALLOC |
| 4861 free_lrecord (ptr); | |
| 4862 #else /* not MC_ALLOC */ | |
| 1204 | 4863 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (misc_user_data, Lisp_Misc_User_Data, XMISC_USER_DATA (ptr)); |
| 2720 | 4864 #endif /* not MC_ALLOC */ |
| 1204 | 4865 } |
| 4866 | |
| 4867 #endif /* EVENT_DATA_AS_OBJECTS */ | |
| 934 | 4868 |
| 2720 | 4869 #ifndef MC_ALLOC |
| 428 | 4870 static void |
| 4871 sweep_markers (void) | |
| 4872 { | |
| 4873 #define UNMARK_marker(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader)) | |
| 4874 #define ADDITIONAL_FREE_marker(ptr) \ | |
| 4875 do { Lisp_Object tem; \ | |
| 793 | 4876 tem = wrap_marker (ptr); \ |
| 428 | 4877 unchain_marker (tem); \ |
| 4878 } while (0) | |
| 4879 | |
| 440 | 4880 SWEEP_FIXED_TYPE_BLOCK (marker, Lisp_Marker); |
| 428 | 4881 } |
| 2720 | 4882 #endif /* not MC_ALLOC */ |
| 428 | 4883 |
| 4884 /* Explicitly free a marker. */ | |
| 4885 void | |
| 1204 | 4886 free_marker (Lisp_Object ptr) |
| 428 | 4887 { |
| 2720 | 4888 #ifdef MC_ALLOC |
| 4889 free_lrecord (ptr); | |
| 4890 #else /* not MC_ALLOC */ | |
| 1204 | 4891 FREE_FIXED_TYPE_WHEN_NOT_IN_GC (marker, Lisp_Marker, XMARKER (ptr)); |
| 2720 | 4892 #endif /* not MC_ALLOC */ |
| 428 | 4893 } |
| 4894 | |
| 4895 | |
| 4896 #if defined (MULE) && defined (VERIFY_STRING_CHARS_INTEGRITY) | |
| 4897 | |
| 4898 static void | |
| 4899 verify_string_chars_integrity (void) | |
| 4900 { | |
| 4901 struct string_chars_block *sb; | |
| 4902 | |
| 4903 /* Scan each existing string block sequentially, string by string. */ | |
| 4904 for (sb = first_string_chars_block; sb; sb = sb->next) | |
| 4905 { | |
| 4906 int pos = 0; | |
| 4907 /* POS is the index of the next string in the block. */ | |
| 4908 while (pos < sb->pos) | |
| 4909 { | |
| 4910 struct string_chars *s_chars = | |
| 4911 (struct string_chars *) &(sb->string_chars[pos]); | |
| 438 | 4912 Lisp_String *string; |
| 428 | 4913 int size; |
| 4914 int fullsize; | |
| 4915 | |
| 454 | 4916 /* If the string_chars struct is marked as free (i.e. the |
| 4917 STRING pointer is NULL) then this is an unused chunk of | |
| 4918 string storage. (See below.) */ | |
| 4919 | |
| 4920 if (STRING_CHARS_FREE_P (s_chars)) | |
| 428 | 4921 { |
| 4922 fullsize = ((struct unused_string_chars *) s_chars)->fullsize; | |
| 4923 pos += fullsize; | |
| 4924 continue; | |
| 4925 } | |
| 4926 | |
| 4927 string = s_chars->string; | |
| 4928 /* Must be 32-bit aligned. */ | |
| 4929 assert ((((int) string) & 3) == 0); | |
| 4930 | |
| 793 | 4931 size = string->size_; |
| 428 | 4932 fullsize = STRING_FULLSIZE (size); |
| 4933 | |
| 4934 assert (!BIG_STRING_FULLSIZE_P (fullsize)); | |
| 2720 | 4935 assert (XSTRING_DATA (string) == s_chars->chars); |
| 428 | 4936 pos += fullsize; |
| 4937 } | |
| 4938 assert (pos == sb->pos); | |
| 4939 } | |
| 4940 } | |
| 4941 | |
| 1204 | 4942 #endif /* defined (MULE) && defined (VERIFY_STRING_CHARS_INTEGRITY) */ |
| 428 | 4943 |
| 4944 /* Compactify string chars, relocating the reference to each -- | |
| 4945 free any empty string_chars_block we see. */ | |
| 4946 static void | |
| 4947 compact_string_chars (void) | |
| 4948 { | |
| 4949 struct string_chars_block *to_sb = first_string_chars_block; | |
| 4950 int to_pos = 0; | |
| 4951 struct string_chars_block *from_sb; | |
| 4952 | |
| 4953 /* Scan each existing string block sequentially, string by string. */ | |
| 4954 for (from_sb = first_string_chars_block; from_sb; from_sb = from_sb->next) | |
| 4955 { | |
| 4956 int from_pos = 0; | |
| 4957 /* FROM_POS is the index of the next string in the block. */ | |
| 4958 while (from_pos < from_sb->pos) | |
| 4959 { | |
| 4960 struct string_chars *from_s_chars = | |
| 4961 (struct string_chars *) &(from_sb->string_chars[from_pos]); | |
| 4962 struct string_chars *to_s_chars; | |
| 438 | 4963 Lisp_String *string; |
| 428 | 4964 int size; |
| 4965 int fullsize; | |
| 4966 | |
| 454 | 4967 /* If the string_chars struct is marked as free (i.e. the |
| 4968 STRING pointer is NULL) then this is an unused chunk of | |
| 4969 string storage. This happens under Mule when a string's | |
| 4970 size changes in such a way that its fullsize changes. | |
| 4971 (Strings can change size because a different-length | |
| 4972 character can be substituted for another character.) | |
| 4973 In this case, after the bogus string pointer is the | |
| 4974 "fullsize" of this entry, i.e. how many bytes to skip. */ | |
| 4975 | |
| 4976 if (STRING_CHARS_FREE_P (from_s_chars)) | |
| 428 | 4977 { |
| 4978 fullsize = ((struct unused_string_chars *) from_s_chars)->fullsize; | |
| 4979 from_pos += fullsize; | |
| 4980 continue; | |
| 4981 } | |
| 4982 | |
| 4983 string = from_s_chars->string; | |
| 1204 | 4984 gc_checking_assert (!(LRECORD_FREE_P (string))); |
| 428 | 4985 |
| 793 | 4986 size = string->size_; |
| 428 | 4987 fullsize = STRING_FULLSIZE (size); |
| 4988 | |
| 442 | 4989 gc_checking_assert (! BIG_STRING_FULLSIZE_P (fullsize)); |
| 428 | 4990 |
| 4991 /* Just skip it if it isn't marked. */ | |
| 771 | 4992 if (! MARKED_RECORD_HEADER_P (&(string->u.lheader))) |
| 428 | 4993 { |
| 4994 from_pos += fullsize; | |
| 4995 continue; | |
| 4996 } | |
| 4997 | |
| 4998 /* If it won't fit in what's left of TO_SB, close TO_SB out | |
| 4999 and go on to the next string_chars_block. We know that TO_SB | |
| 5000 cannot advance past FROM_SB here since FROM_SB is large enough | |
| 5001 to currently contain this string. */ | |
| 5002 if ((to_pos + fullsize) > countof (to_sb->string_chars)) | |
| 5003 { | |
| 5004 to_sb->pos = to_pos; | |
| 5005 to_sb = to_sb->next; | |
| 5006 to_pos = 0; | |
| 5007 } | |
| 5008 | |
| 5009 /* Compute new address of this string | |
| 5010 and update TO_POS for the space being used. */ | |
| 5011 to_s_chars = (struct string_chars *) &(to_sb->string_chars[to_pos]); | |
| 5012 | |
| 5013 /* Copy the string_chars to the new place. */ | |
| 5014 if (from_s_chars != to_s_chars) | |
| 5015 memmove (to_s_chars, from_s_chars, fullsize); | |
| 5016 | |
| 5017 /* Relocate FROM_S_CHARS's reference */ | |
| 826 | 5018 set_lispstringp_data (string, &(to_s_chars->chars[0])); |
| 428 | 5019 |
| 5020 from_pos += fullsize; | |
| 5021 to_pos += fullsize; | |
| 5022 } | |
| 5023 } | |
| 5024 | |
| 5025 /* Set current to the last string chars block still used and | |
| 5026 free any that follow. */ | |
| 5027 { | |
| 5028 struct string_chars_block *victim; | |
| 5029 | |
| 5030 for (victim = to_sb->next; victim; ) | |
| 5031 { | |
| 5032 struct string_chars_block *next = victim->next; | |
| 1726 | 5033 xfree (victim, struct string_chars_block *); |
| 428 | 5034 victim = next; |
| 5035 } | |
| 5036 | |
| 5037 current_string_chars_block = to_sb; | |
| 5038 current_string_chars_block->pos = to_pos; | |
| 5039 current_string_chars_block->next = 0; | |
| 5040 } | |
| 5041 } | |
| 5042 | |
| 2720 | 5043 #ifndef MC_ALLOC |
| 428 | 5044 #if 1 /* Hack to debug missing purecopy's */ |
| 5045 static int debug_string_purity; | |
| 5046 | |
| 5047 static void | |
| 793 | 5048 debug_string_purity_print (Lisp_Object p) |
| 428 | 5049 { |
| 5050 Charcount i; | |
| 826 | 5051 Charcount s = string_char_length (p); |
| 442 | 5052 stderr_out ("\""); |
| 428 | 5053 for (i = 0; i < s; i++) |
| 5054 { | |
| 867 | 5055 Ichar ch = string_ichar (p, i); |
| 428 | 5056 if (ch < 32 || ch >= 126) |
| 5057 stderr_out ("\\%03o", ch); | |
| 5058 else if (ch == '\\' || ch == '\"') | |
| 5059 stderr_out ("\\%c", ch); | |
| 5060 else | |
| 5061 stderr_out ("%c", ch); | |
| 5062 } | |
| 5063 stderr_out ("\"\n"); | |
| 5064 } | |
| 5065 #endif /* 1 */ | |
| 2720 | 5066 #endif /* not MC_ALLOC */ |
| 5067 | |
| 5068 #ifndef MC_ALLOC | |
| 428 | 5069 static void |
| 5070 sweep_strings (void) | |
| 5071 { | |
| 647 | 5072 int num_small_used = 0; |
| 5073 Bytecount num_small_bytes = 0, num_bytes = 0; | |
| 428 | 5074 int debug = debug_string_purity; |
| 5075 | |
| 793 | 5076 #define UNMARK_string(ptr) do { \ |
| 5077 Lisp_String *p = (ptr); \ | |
| 5078 Bytecount size = p->size_; \ | |
| 5079 UNMARK_RECORD_HEADER (&(p->u.lheader)); \ | |
| 5080 num_bytes += size; \ | |
| 5081 if (!BIG_STRING_SIZE_P (size)) \ | |
| 5082 { \ | |
| 5083 num_small_bytes += size; \ | |
| 5084 num_small_used++; \ | |
| 5085 } \ | |
| 5086 if (debug) \ | |
| 5087 debug_string_purity_print (wrap_string (p)); \ | |
| 438 | 5088 } while (0) |
| 5089 #define ADDITIONAL_FREE_string(ptr) do { \ | |
| 793 | 5090 Bytecount size = ptr->size_; \ |
| 438 | 5091 if (BIG_STRING_SIZE_P (size)) \ |
| 1726 | 5092 xfree (ptr->data_, Ibyte *); \ |
| 438 | 5093 } while (0) |
| 5094 | |
| 771 | 5095 SWEEP_FIXED_TYPE_BLOCK_1 (string, Lisp_String, u.lheader); |
| 428 | 5096 |
| 5097 gc_count_num_short_string_in_use = num_small_used; | |
| 5098 gc_count_string_total_size = num_bytes; | |
| 5099 gc_count_short_string_total_size = num_small_bytes; | |
| 5100 } | |
| 2720 | 5101 #endif /* not MC_ALLOC */ |
| 428 | 5102 |
| 5103 /* I hate duplicating all this crap! */ | |
| 5104 int | |
| 5105 marked_p (Lisp_Object obj) | |
| 5106 { | |
| 5107 /* Checks we used to perform. */ | |
| 5108 /* if (EQ (obj, Qnull_pointer)) return 1; */ | |
| 5109 /* if (!POINTER_TYPE_P (XGCTYPE (obj))) return 1; */ | |
| 5110 /* if (PURIFIED (XPNTR (obj))) return 1; */ | |
| 5111 | |
| 5112 if (XTYPE (obj) == Lisp_Type_Record) | |
| 5113 { | |
| 5114 struct lrecord_header *lheader = XRECORD_LHEADER (obj); | |
| 442 | 5115 |
| 5116 GC_CHECK_LHEADER_INVARIANTS (lheader); | |
| 5117 | |
| 5118 return MARKED_RECORD_HEADER_P (lheader); | |
| 428 | 5119 } |
| 5120 return 1; | |
| 5121 } | |
| 5122 | |
| 5123 static void | |
| 5124 gc_sweep (void) | |
| 5125 { | |
| 2720 | 5126 #ifdef MC_ALLOC |
| 5127 compact_string_chars (); | |
| 5128 mc_finalize (); | |
| 5129 mc_sweep (); | |
| 5130 #else /* not MC_ALLOC */ | |
| 428 | 5131 /* Free all unmarked records. Do this at the very beginning, |
| 5132 before anything else, so that the finalize methods can safely | |
| 5133 examine items in the objects. sweep_lcrecords_1() makes | |
| 5134 sure to call all the finalize methods *before* freeing anything, | |
| 5135 to complete the safety. */ | |
| 5136 { | |
| 5137 int ignored; | |
| 5138 sweep_lcrecords_1 (&all_lcrecords, &ignored); | |
| 5139 } | |
| 5140 | |
| 5141 compact_string_chars (); | |
| 5142 | |
| 5143 /* Finalize methods below (called through the ADDITIONAL_FREE_foo | |
| 5144 macros) must be *extremely* careful to make sure they're not | |
| 5145 referencing freed objects. The only two existing finalize | |
| 5146 methods (for strings and markers) pass muster -- the string | |
| 5147 finalizer doesn't look at anything but its own specially- | |
| 5148 created block, and the marker finalizer only looks at live | |
| 5149 buffers (which will never be freed) and at the markers before | |
| 5150 and after it in the chain (which, by induction, will never be | |
| 5151 freed because if so, they would have already removed themselves | |
| 5152 from the chain). */ | |
| 5153 | |
| 5154 /* Put all unmarked strings on free list, free'ing the string chars | |
| 5155 of large unmarked strings */ | |
| 5156 sweep_strings (); | |
| 5157 | |
| 5158 /* Put all unmarked conses on free list */ | |
| 5159 sweep_conses (); | |
| 5160 | |
| 5161 /* Free all unmarked compiled-function objects */ | |
| 5162 sweep_compiled_functions (); | |
| 5163 | |
| 5164 /* Put all unmarked floats on free list */ | |
| 5165 sweep_floats (); | |
| 5166 | |
| 1983 | 5167 #ifdef HAVE_BIGNUM |
| 5168 /* Put all unmarked bignums on free list */ | |
| 5169 sweep_bignums (); | |
| 5170 #endif | |
| 5171 | |
| 5172 #ifdef HAVE_RATIO | |
| 5173 /* Put all unmarked ratios on free list */ | |
| 5174 sweep_ratios (); | |
| 5175 #endif | |
| 5176 | |
| 5177 #ifdef HAVE_BIGFLOAT | |
| 5178 /* Put all unmarked bigfloats on free list */ | |
| 5179 sweep_bigfloats (); | |
| 5180 #endif | |
| 5181 | |
| 428 | 5182 /* Put all unmarked symbols on free list */ |
| 5183 sweep_symbols (); | |
| 5184 | |
| 5185 /* Put all unmarked extents on free list */ | |
| 5186 sweep_extents (); | |
| 5187 | |
| 5188 /* Put all unmarked markers on free list. | |
| 5189 Dechain each one first from the buffer into which it points. */ | |
| 5190 sweep_markers (); | |
| 5191 | |
| 5192 sweep_events (); | |
| 5193 | |
| 1204 | 5194 #ifdef EVENT_DATA_AS_OBJECTS |
| 934 | 5195 sweep_key_data (); |
| 5196 sweep_button_data (); | |
| 5197 sweep_motion_data (); | |
| 5198 sweep_process_data (); | |
| 5199 sweep_timeout_data (); | |
| 5200 sweep_magic_data (); | |
| 5201 sweep_magic_eval_data (); | |
| 5202 sweep_eval_data (); | |
| 5203 sweep_misc_user_data (); | |
| 1204 | 5204 #endif /* EVENT_DATA_AS_OBJECTS */ |
| 2720 | 5205 #endif /* not MC_ALLOC */ |
| 5206 | |
| 5207 #ifndef MC_ALLOC | |
| 428 | 5208 #ifdef PDUMP |
| 442 | 5209 pdump_objects_unmark (); |
| 428 | 5210 #endif |
| 2720 | 5211 #endif /* not MC_ALLOC */ |
| 428 | 5212 } |
| 5213 | |
| 5214 /* Clearing for disksave. */ | |
| 5215 | |
| 5216 void | |
| 5217 disksave_object_finalization (void) | |
| 5218 { | |
| 5219 /* It's important that certain information from the environment not get | |
| 5220 dumped with the executable (pathnames, environment variables, etc.). | |
| 5221 To make it easier to tell when this has happened with strings(1) we | |
| 5222 clear some known-to-be-garbage blocks of memory, so that leftover | |
| 5223 results of old evaluation don't look like potential problems. | |
| 5224 But first we set some notable variables to nil and do one more GC, | |
| 5225 to turn those strings into garbage. | |
| 440 | 5226 */ |
| 428 | 5227 |
| 5228 /* Yeah, this list is pretty ad-hoc... */ | |
| 5229 Vprocess_environment = Qnil; | |
| 771 | 5230 env_initted = 0; |
| 428 | 5231 Vexec_directory = Qnil; |
| 5232 Vdata_directory = Qnil; | |
| 5233 Vsite_directory = Qnil; | |
| 5234 Vdoc_directory = Qnil; | |
| 5235 Vexec_path = Qnil; | |
| 5236 Vload_path = Qnil; | |
| 5237 /* Vdump_load_path = Qnil; */ | |
| 5238 /* Release hash tables for locate_file */ | |
| 5239 Flocate_file_clear_hashing (Qt); | |
| 771 | 5240 uncache_home_directory (); |
| 776 | 5241 zero_out_command_line_status_vars (); |
| 872 | 5242 clear_default_devices (); |
| 428 | 5243 |
| 5244 #if defined(LOADHIST) && !(defined(LOADHIST_DUMPED) || \ | |
| 5245 defined(LOADHIST_BUILTIN)) | |
| 5246 Vload_history = Qnil; | |
| 5247 #endif | |
| 5248 Vshell_file_name = Qnil; | |
| 5249 | |
| 5250 garbage_collect_1 (); | |
| 5251 | |
| 5252 /* Run the disksave finalization methods of all live objects. */ | |
| 5253 disksave_object_finalization_1 (); | |
| 5254 | |
| 5255 /* Zero out the uninitialized (really, unused) part of the containers | |
| 5256 for the live strings. */ | |
| 5257 { | |
| 5258 struct string_chars_block *scb; | |
| 5259 for (scb = first_string_chars_block; scb; scb = scb->next) | |
| 5260 { | |
| 5261 int count = sizeof (scb->string_chars) - scb->pos; | |
| 5262 | |
| 5263 assert (count >= 0 && count < STRING_CHARS_BLOCK_SIZE); | |
| 440 | 5264 if (count != 0) |
| 5265 { | |
| 5266 /* from the block's fill ptr to the end */ | |
| 5267 memset ((scb->string_chars + scb->pos), 0, count); | |
| 5268 } | |
| 428 | 5269 } |
| 5270 } | |
| 5271 | |
| 5272 /* There, that ought to be enough... */ | |
| 5273 | |
| 5274 } | |
| 5275 | |
| 5276 | |
| 771 | 5277 int |
| 5278 begin_gc_forbidden (void) | |
| 5279 { | |
| 853 | 5280 return internal_bind_int (&gc_currently_forbidden, 1); |
| 771 | 5281 } |
| 5282 | |
| 5283 void | |
| 5284 end_gc_forbidden (int count) | |
| 5285 { | |
| 5286 unbind_to (count); | |
| 5287 } | |
| 5288 | |
| 428 | 5289 /* Maybe we want to use this when doing a "panic" gc after memory_full()? */ |
| 5290 static int gc_hooks_inhibited; | |
| 5291 | |
| 611 | 5292 struct post_gc_action |
| 5293 { | |
| 5294 void (*fun) (void *); | |
| 5295 void *arg; | |
| 5296 }; | |
| 5297 | |
| 5298 typedef struct post_gc_action post_gc_action; | |
| 5299 | |
| 5300 typedef struct | |
| 5301 { | |
| 5302 Dynarr_declare (post_gc_action); | |
| 5303 } post_gc_action_dynarr; | |
| 5304 | |
| 5305 static post_gc_action_dynarr *post_gc_actions; | |
| 5306 | |
| 5307 /* Register an action to be called at the end of GC. | |
| 5308 gc_in_progress is 0 when this is called. | |
| 5309 This is used when it is discovered that an action needs to be taken, | |
| 5310 but it's during GC, so it's not safe. (e.g. in a finalize method.) | |
| 5311 | |
| 5312 As a general rule, do not use Lisp objects here. | |
| 5313 And NEVER signal an error. | |
| 5314 */ | |
| 5315 | |
| 5316 void | |
| 5317 register_post_gc_action (void (*fun) (void *), void *arg) | |
| 5318 { | |
| 5319 post_gc_action action; | |
| 5320 | |
| 5321 if (!post_gc_actions) | |
| 5322 post_gc_actions = Dynarr_new (post_gc_action); | |
| 5323 | |
| 5324 action.fun = fun; | |
| 5325 action.arg = arg; | |
| 5326 | |
| 5327 Dynarr_add (post_gc_actions, action); | |
| 5328 } | |
| 5329 | |
| 5330 static void | |
| 5331 run_post_gc_actions (void) | |
| 5332 { | |
| 5333 int i; | |
| 5334 | |
| 5335 if (post_gc_actions) | |
| 5336 { | |
| 5337 for (i = 0; i < Dynarr_length (post_gc_actions); i++) | |
| 5338 { | |
| 5339 post_gc_action action = Dynarr_at (post_gc_actions, i); | |
| 5340 (action.fun) (action.arg); | |
| 5341 } | |
| 5342 | |
| 5343 Dynarr_reset (post_gc_actions); | |
| 5344 } | |
| 5345 } | |
| 5346 | |
| 428 | 5347 |
| 5348 void | |
| 5349 garbage_collect_1 (void) | |
| 5350 { | |
| 5351 #if MAX_SAVE_STACK > 0 | |
| 5352 char stack_top_variable; | |
| 5353 extern char *stack_bottom; | |
| 5354 #endif | |
| 5355 struct frame *f; | |
| 5356 int speccount; | |
| 5357 int cursor_changed; | |
| 5358 Lisp_Object pre_gc_cursor; | |
| 5359 struct gcpro gcpro1; | |
| 1292 | 5360 PROFILE_DECLARE (); |
| 428 | 5361 |
| 1123 | 5362 assert (!in_display || gc_currently_forbidden); |
| 5363 | |
| 428 | 5364 if (gc_in_progress |
| 5365 || gc_currently_forbidden | |
| 5366 || in_display | |
| 5367 || preparing_for_armageddon) | |
| 5368 return; | |
| 5369 | |
| 1292 | 5370 PROFILE_RECORD_ENTERING_SECTION (QSin_garbage_collection); |
| 5371 | |
| 428 | 5372 /* We used to call selected_frame() here. |
| 5373 | |
| 5374 The following functions cannot be called inside GC | |
| 5375 so we move to after the above tests. */ | |
| 5376 { | |
| 5377 Lisp_Object frame; | |
| 5378 Lisp_Object device = Fselected_device (Qnil); | |
| 5379 if (NILP (device)) /* Could happen during startup, eg. if always_gc */ | |
| 5380 return; | |
| 872 | 5381 frame = Fselected_frame (device); |
| 428 | 5382 if (NILP (frame)) |
| 563 | 5383 invalid_state ("No frames exist on device", device); |
| 428 | 5384 f = XFRAME (frame); |
| 5385 } | |
| 5386 | |
| 5387 pre_gc_cursor = Qnil; | |
| 5388 cursor_changed = 0; | |
| 5389 | |
| 5390 GCPRO1 (pre_gc_cursor); | |
| 5391 | |
| 5392 /* Very important to prevent GC during any of the following | |
| 5393 stuff that might run Lisp code; otherwise, we'll likely | |
| 5394 have infinite GC recursion. */ | |
| 771 | 5395 speccount = begin_gc_forbidden (); |
| 428 | 5396 |
| 887 | 5397 need_to_signal_post_gc = 0; |
| 1318 | 5398 recompute_funcall_allocation_flag (); |
| 887 | 5399 |
| 428 | 5400 if (!gc_hooks_inhibited) |
| 853 | 5401 run_hook_trapping_problems |
| 1333 | 5402 (Qgarbage_collecting, Qpre_gc_hook, |
| 853 | 5403 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION); |
| 428 | 5404 |
| 5405 /* Now show the GC cursor/message. */ | |
| 5406 if (!noninteractive) | |
| 5407 { | |
| 5408 if (FRAME_WIN_P (f)) | |
| 5409 { | |
| 771 | 5410 Lisp_Object frame = wrap_frame (f); |
| 428 | 5411 Lisp_Object cursor = glyph_image_instance (Vgc_pointer_glyph, |
| 5412 FRAME_SELECTED_WINDOW (f), | |
| 5413 ERROR_ME_NOT, 1); | |
| 5414 pre_gc_cursor = f->pointer; | |
| 5415 if (POINTER_IMAGE_INSTANCEP (cursor) | |
| 5416 /* don't change if we don't know how to change back. */ | |
| 5417 && POINTER_IMAGE_INSTANCEP (pre_gc_cursor)) | |
| 5418 { | |
| 5419 cursor_changed = 1; | |
| 5420 Fset_frame_pointer (frame, cursor); | |
| 5421 } | |
| 5422 } | |
| 5423 | |
| 5424 /* Don't print messages to the stream device. */ | |
| 5425 if (!cursor_changed && !FRAME_STREAM_P (f)) | |
| 5426 { | |
| 1154 | 5427 if (garbage_collection_messages) |
| 5428 { | |
| 5429 Lisp_Object args[2], whole_msg; | |
| 5430 args[0] = (STRINGP (Vgc_message) ? Vgc_message : | |
| 5431 build_msg_string (gc_default_message)); | |
| 5432 args[1] = build_string ("..."); | |
| 5433 whole_msg = Fconcat (2, args); | |
| 5434 echo_area_message (f, (Ibyte *) 0, whole_msg, 0, -1, | |
| 5435 Qgarbage_collecting); | |
| 5436 } | |
| 428 | 5437 } |
| 5438 } | |
| 5439 | |
| 5440 /***** Now we actually start the garbage collection. */ | |
| 5441 | |
| 5442 gc_in_progress = 1; | |
| 2367 | 5443 inhibit_non_essential_conversion_operations = 1; |
| 428 | 5444 |
| 5445 gc_generation_number[0]++; | |
| 5446 | |
| 5447 #if MAX_SAVE_STACK > 0 | |
| 5448 | |
| 5449 /* Save a copy of the contents of the stack, for debugging. */ | |
| 5450 if (!purify_flag) | |
| 5451 { | |
| 5452 /* Static buffer in which we save a copy of the C stack at each GC. */ | |
| 5453 static char *stack_copy; | |
| 665 | 5454 static Bytecount stack_copy_size; |
| 428 | 5455 |
| 5456 ptrdiff_t stack_diff = &stack_top_variable - stack_bottom; | |
| 665 | 5457 Bytecount stack_size = (stack_diff > 0 ? stack_diff : -stack_diff); |
| 428 | 5458 if (stack_size < MAX_SAVE_STACK) |
| 5459 { | |
| 5460 if (stack_copy_size < stack_size) | |
| 5461 { | |
| 5462 stack_copy = (char *) xrealloc (stack_copy, stack_size); | |
| 5463 stack_copy_size = stack_size; | |
| 5464 } | |
| 5465 | |
| 5466 memcpy (stack_copy, | |
| 5467 stack_diff > 0 ? stack_bottom : &stack_top_variable, | |
| 5468 stack_size); | |
| 5469 } | |
| 5470 } | |
| 5471 #endif /* MAX_SAVE_STACK > 0 */ | |
| 5472 | |
| 5473 /* Do some totally ad-hoc resource clearing. */ | |
| 5474 /* #### generalize this? */ | |
| 5475 clear_event_resource (); | |
| 5476 cleanup_specifiers (); | |
| 1204 | 5477 cleanup_buffer_undo_lists (); |
| 428 | 5478 |
| 5479 /* Mark all the special slots that serve as the roots of accessibility. */ | |
| 5480 | |
| 1598 | 5481 #ifdef USE_KKCC |
| 5482 /* initialize kkcc stack */ | |
| 5483 kkcc_gc_stack_init(); | |
| 2645 | 5484 #define mark_object(obj) kkcc_gc_stack_push_lisp_object (obj, 0, -1) |
| 1598 | 5485 #endif /* USE_KKCC */ |
| 5486 | |
| 428 | 5487 { /* staticpro() */ |
| 452 | 5488 Lisp_Object **p = Dynarr_begin (staticpros); |
| 665 | 5489 Elemcount count; |
| 452 | 5490 for (count = Dynarr_length (staticpros); count; count--) |
| 5491 mark_object (**p++); | |
| 5492 } | |
| 5493 | |
| 5494 { /* staticpro_nodump() */ | |
| 5495 Lisp_Object **p = Dynarr_begin (staticpros_nodump); | |
| 665 | 5496 Elemcount count; |
| 452 | 5497 for (count = Dynarr_length (staticpros_nodump); count; count--) |
| 5498 mark_object (**p++); | |
| 428 | 5499 } |
| 5500 | |
| 2720 | 5501 #ifdef MC_ALLOC |
| 5502 { /* mcpro () */ | |
| 5503 Lisp_Object *p = Dynarr_begin (mcpros); | |
| 5504 Elemcount count; | |
| 5505 for (count = Dynarr_length (mcpros); count; count--) | |
| 5506 mark_object (*p++); | |
| 5507 } | |
| 5508 #endif /* MC_ALLOC */ | |
| 5509 | |
| 428 | 5510 { /* GCPRO() */ |
| 5511 struct gcpro *tail; | |
| 5512 int i; | |
| 5513 for (tail = gcprolist; tail; tail = tail->next) | |
| 5514 for (i = 0; i < tail->nvars; i++) | |
| 5515 mark_object (tail->var[i]); | |
| 5516 } | |
| 5517 | |
| 5518 { /* specbind() */ | |
| 5519 struct specbinding *bind; | |
| 5520 for (bind = specpdl; bind != specpdl_ptr; bind++) | |
| 5521 { | |
| 5522 mark_object (bind->symbol); | |
| 5523 mark_object (bind->old_value); | |
| 5524 } | |
| 5525 } | |
| 5526 | |
| 5527 { | |
| 5528 struct catchtag *catch; | |
| 5529 for (catch = catchlist; catch; catch = catch->next) | |
| 5530 { | |
| 5531 mark_object (catch->tag); | |
| 5532 mark_object (catch->val); | |
| 853 | 5533 mark_object (catch->actual_tag); |
| 2532 | 5534 mark_object (catch->backtrace); |
| 428 | 5535 } |
| 5536 } | |
| 5537 | |
| 5538 { | |
| 5539 struct backtrace *backlist; | |
| 5540 for (backlist = backtrace_list; backlist; backlist = backlist->next) | |
| 5541 { | |
| 5542 int nargs = backlist->nargs; | |
| 5543 int i; | |
| 5544 | |
| 5545 mark_object (*backlist->function); | |
| 1292 | 5546 if (nargs < 0 /* nargs == UNEVALLED || nargs == MANY */ |
| 5547 /* might be fake (internal profiling entry) */ | |
| 5548 && backlist->args) | |
| 428 | 5549 mark_object (backlist->args[0]); |
| 5550 else | |
| 5551 for (i = 0; i < nargs; i++) | |
| 5552 mark_object (backlist->args[i]); | |
| 5553 } | |
| 5554 } | |
| 5555 | |
| 5556 mark_profiling_info (); | |
| 5557 | |
| 5558 /* OK, now do the after-mark stuff. This is for things that | |
| 5559 are only marked when something else is marked (e.g. weak hash tables). | |
| 5560 There may be complex dependencies between such objects -- e.g. | |
| 5561 a weak hash table might be unmarked, but after processing a later | |
| 5562 weak hash table, the former one might get marked. So we have to | |
| 5563 iterate until nothing more gets marked. */ | |
| 1598 | 5564 #ifdef USE_KKCC |
| 5565 kkcc_marking (); | |
| 5566 #endif /* USE_KKCC */ | |
| 1590 | 5567 init_marking_ephemerons (); |
| 428 | 5568 while (finish_marking_weak_hash_tables () > 0 || |
| 887 | 5569 finish_marking_weak_lists () > 0 || |
| 1590 | 5570 continue_marking_ephemerons () > 0) |
|
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|
5571 #ifdef USE_KKCC |
|
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5572 { |
|
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|
5573 kkcc_marking (); |
|
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|
5574 } |
|
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|
5575 #else /* NOT USE_KKCC */ |
| 1590 | 5576 ; |
| 1598 | 5577 #endif /* USE_KKCC */ |
| 5578 | |
| 1590 | 5579 /* At this point, we know which objects need to be finalized: we |
| 5580 still need to resurrect them */ | |
| 5581 | |
| 5582 while (finish_marking_ephemerons () > 0 || | |
| 5583 finish_marking_weak_lists () > 0 || | |
| 5584 finish_marking_weak_hash_tables () > 0) | |
| 1643 | 5585 #ifdef USE_KKCC |
|
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|
5586 { |
|
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|
5587 kkcc_marking (); |
|
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|
5588 } |
| 1643 | 5589 kkcc_gc_stack_free (); |
| 1676 | 5590 #undef mark_object |
|
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|
5591 #else /* NOT USE_KKCC */ |
|
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|
5592 ; |
| 1643 | 5593 #endif /* USE_KKCC */ |
| 5594 | |
| 428 | 5595 /* And prune (this needs to be called after everything else has been |
| 5596 marked and before we do any sweeping). */ | |
| 5597 /* #### this is somewhat ad-hoc and should probably be an object | |
| 5598 method */ | |
| 5599 prune_weak_hash_tables (); | |
| 5600 prune_weak_lists (); | |
| 5601 prune_specifiers (); | |
| 5602 prune_syntax_tables (); | |
| 5603 | |
| 887 | 5604 prune_ephemerons (); |
| 858 | 5605 prune_weak_boxes (); |
| 5606 | |
| 428 | 5607 gc_sweep (); |
| 5608 | |
| 5609 consing_since_gc = 0; | |
| 5610 #ifndef DEBUG_XEMACS | |
| 5611 /* Allow you to set it really fucking low if you really want ... */ | |
| 5612 if (gc_cons_threshold < 10000) | |
| 5613 gc_cons_threshold = 10000; | |
| 5614 #endif | |
| 814 | 5615 recompute_need_to_garbage_collect (); |
| 428 | 5616 |
| 2367 | 5617 inhibit_non_essential_conversion_operations = 0; |
| 428 | 5618 gc_in_progress = 0; |
| 5619 | |
| 611 | 5620 run_post_gc_actions (); |
| 5621 | |
| 428 | 5622 /******* End of garbage collection ********/ |
| 5623 | |
| 5624 /* Now remove the GC cursor/message */ | |
| 5625 if (!noninteractive) | |
| 5626 { | |
| 5627 if (cursor_changed) | |
| 771 | 5628 Fset_frame_pointer (wrap_frame (f), pre_gc_cursor); |
| 428 | 5629 else if (!FRAME_STREAM_P (f)) |
| 5630 { | |
| 5631 /* Show "...done" only if the echo area would otherwise be empty. */ | |
| 5632 if (NILP (clear_echo_area (selected_frame (), | |
| 5633 Qgarbage_collecting, 0))) | |
| 5634 { | |
| 1154 | 5635 if (garbage_collection_messages) |
| 5636 { | |
| 5637 Lisp_Object args[2], whole_msg; | |
| 5638 args[0] = (STRINGP (Vgc_message) ? Vgc_message : | |
| 5639 build_msg_string (gc_default_message)); | |
| 5640 args[1] = build_msg_string ("... done"); | |
| 5641 whole_msg = Fconcat (2, args); | |
| 5642 echo_area_message (selected_frame (), (Ibyte *) 0, | |
| 5643 whole_msg, 0, -1, | |
| 5644 Qgarbage_collecting); | |
| 5645 } | |
| 428 | 5646 } |
| 5647 } | |
| 5648 } | |
| 5649 | |
| 5650 /* now stop inhibiting GC */ | |
| 771 | 5651 unbind_to (speccount); |
| 428 | 5652 |
| 2720 | 5653 #ifndef MC_ALLOC |
| 428 | 5654 if (!breathing_space) |
| 5655 { | |
| 5656 breathing_space = malloc (4096 - MALLOC_OVERHEAD); | |
| 5657 } | |
| 2720 | 5658 #endif /* not MC_ALLOC */ |
| 428 | 5659 |
| 5660 UNGCPRO; | |
| 887 | 5661 |
| 5662 need_to_signal_post_gc = 1; | |
| 5663 funcall_allocation_flag = 1; | |
| 5664 | |
| 1292 | 5665 PROFILE_RECORD_EXITING_SECTION (QSin_garbage_collection); |
| 5666 | |
| 428 | 5667 return; |
| 5668 } | |
| 5669 | |
| 2720 | 5670 #ifdef MC_ALLOC |
| 5671 #ifdef MC_ALLOC_TYPE_STATS | |
| 5672 static Lisp_Object | |
| 5673 gc_plist_hack (const Ascbyte *name, int value, Lisp_Object tail) | |
| 5674 { | |
| 5675 /* C doesn't have local functions (or closures, or GC, or readable syntax, | |
| 5676 or portable numeric datatypes, or bit-vectors, or characters, or | |
| 5677 arrays, or exceptions, or ...) */ | |
| 5678 return cons3 (intern (name), make_int (value), tail); | |
| 5679 } | |
| 2775 | 5680 |
| 5681 DEFUN("lrecord-stats", Flrecord_stats, 0, 0 ,"", /* | |
| 5682 Return statistics about lrecords in a property list. | |
| 2720 | 5683 */ |
| 5684 ()) | |
| 5685 { | |
| 5686 Lisp_Object pl = Qnil; | |
| 5687 int i; | |
| 2775 | 5688 |
| 2720 | 5689 for (i = 0; i < (countof (lrecord_implementations_table) |
| 5690 + MODULE_DEFINABLE_TYPE_COUNT); i++) | |
| 5691 { | |
| 5692 if (lrecord_stats[i].instances_in_use != 0) | |
| 5693 { | |
| 5694 char buf [255]; | |
| 5695 const char *name = lrecord_implementations_table[i]->name; | |
| 5696 int len = strlen (name); | |
| 5697 | |
| 5698 if (lrecord_stats[i].bytes_in_use_including_overhead != | |
| 5699 lrecord_stats[i].bytes_in_use) | |
| 5700 { | |
| 5701 sprintf (buf, "%s-storage-including-overhead", name); | |
| 5702 pl = gc_plist_hack (buf, | |
| 5703 lrecord_stats[i] | |
| 5704 .bytes_in_use_including_overhead, | |
| 5705 pl); | |
| 5706 } | |
| 5707 | |
| 5708 sprintf (buf, "%s-storage", name); | |
| 5709 pl = gc_plist_hack (buf, | |
| 5710 lrecord_stats[i].bytes_in_use, | |
| 5711 pl); | |
| 5712 | |
| 5713 if (name[len-1] == 's') | |
| 5714 sprintf (buf, "%ses-used", name); | |
| 5715 else | |
| 5716 sprintf (buf, "%ss-used", name); | |
| 5717 pl = gc_plist_hack (buf, lrecord_stats[i].instances_in_use, pl); | |
| 5718 } | |
| 5719 } | |
| 2775 | 5720 pl = gc_plist_hack ("string-data-storage-including-overhead", |
| 5721 lrecord_string_data_bytes_in_use_including_overhead, pl); | |
| 5722 pl = gc_plist_hack ("string-data-storage-additional", | |
| 5723 lrecord_string_data_bytes_in_use, pl); | |
| 5724 pl = gc_plist_hack ("string-data-used", | |
| 5725 lrecord_string_data_instances_in_use, pl); | |
| 5726 | |
| 5727 return pl; | |
| 5728 } | |
| 5729 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 5730 | |
| 5731 DEFUN ("garbage-collect", Fgarbage_collect, 0, 0, "", /* | |
| 5732 Reclaim storage for Lisp objects no longer needed. | |
| 5733 Return info on amount of space in use: | |
| 5734 ((USED-CONSES . STORAGE-CONSES) (USED-SYMS . STORAGE-SYMS) | |
| 5735 (USED-MARKERS . STORAGE-MARKERS) USED-STRING-CHARS USED-VECTOR-SLOTS | |
| 5736 PLIST) | |
| 5737 where `PLIST' is a list of alternating keyword/value pairs providing | |
| 5738 more detailed information. | |
| 5739 Garbage collection happens automatically if you cons more than | |
| 5740 `gc-cons-threshold' bytes of Lisp data since previous garbage collection. | |
| 5741 */ | |
| 5742 ()) | |
| 5743 { | |
| 5744 garbage_collect_1 (); | |
| 5745 | |
| 5746 #ifdef MC_ALLOC_TYPE_STATS | |
| 2720 | 5747 /* The things we do for backwards-compatibility */ |
| 5748 return | |
| 5749 list6 | |
| 5750 (Fcons (make_int (lrecord_stats[lrecord_type_cons].instances_in_use), | |
| 5751 make_int (lrecord_stats[lrecord_type_cons] | |
| 5752 .bytes_in_use_including_overhead)), | |
| 2775 | 5753 Fcons (make_int (lrecord_stats[lrecord_type_symbol].instances_in_use), |
| 2720 | 5754 make_int (lrecord_stats[lrecord_type_symbol] |
| 5755 .bytes_in_use_including_overhead)), | |
| 5756 Fcons (make_int (lrecord_stats[lrecord_type_marker].instances_in_use), | |
| 5757 make_int (lrecord_stats[lrecord_type_marker] | |
| 5758 .bytes_in_use_including_overhead)), | |
| 5759 make_int (lrecord_stats[lrecord_type_string] | |
| 5760 .bytes_in_use_including_overhead), | |
| 5761 make_int (lrecord_stats[lrecord_type_vector] | |
| 5762 .bytes_in_use_including_overhead), | |
| 2775 | 5763 Flrecord_stats ()); |
| 2720 | 5764 #else /* not MC_ALLOC_TYPE_STATS */ |
| 5765 return Qnil; | |
| 5766 #endif /* not MC_ALLOC_TYPE_STATS */ | |
| 5767 } | |
| 5768 #else /* not MC_ALLOC */ | |
| 428 | 5769 /* Debugging aids. */ |
| 5770 | |
| 5771 static Lisp_Object | |
| 2367 | 5772 gc_plist_hack (const Ascbyte *name, int value, Lisp_Object tail) |
| 428 | 5773 { |
| 5774 /* C doesn't have local functions (or closures, or GC, or readable syntax, | |
| 5775 or portable numeric datatypes, or bit-vectors, or characters, or | |
| 5776 arrays, or exceptions, or ...) */ | |
| 5777 return cons3 (intern (name), make_int (value), tail); | |
| 5778 } | |
| 5779 | |
| 5780 #define HACK_O_MATIC(type, name, pl) do { \ | |
| 5781 int s = 0; \ | |
| 5782 struct type##_block *x = current_##type##_block; \ | |
| 5783 while (x) { s += sizeof (*x) + MALLOC_OVERHEAD; x = x->prev; } \ | |
| 5784 (pl) = gc_plist_hack ((name), s, (pl)); \ | |
| 5785 } while (0) | |
| 5786 | |
| 5787 DEFUN ("garbage-collect", Fgarbage_collect, 0, 0, "", /* | |
| 5788 Reclaim storage for Lisp objects no longer needed. | |
| 5789 Return info on amount of space in use: | |
| 5790 ((USED-CONSES . FREE-CONSES) (USED-SYMS . FREE-SYMS) | |
| 5791 (USED-MARKERS . FREE-MARKERS) USED-STRING-CHARS USED-VECTOR-SLOTS | |
| 5792 PLIST) | |
| 5793 where `PLIST' is a list of alternating keyword/value pairs providing | |
| 5794 more detailed information. | |
| 5795 Garbage collection happens automatically if you cons more than | |
| 5796 `gc-cons-threshold' bytes of Lisp data since previous garbage collection. | |
| 5797 */ | |
| 5798 ()) | |
| 5799 { | |
| 5800 Lisp_Object pl = Qnil; | |
| 647 | 5801 int i; |
| 428 | 5802 int gc_count_vector_total_size = 0; |
| 5803 garbage_collect_1 (); | |
| 5804 | |
| 442 | 5805 for (i = 0; i < lrecord_type_count; i++) |
| 428 | 5806 { |
| 5807 if (lcrecord_stats[i].bytes_in_use != 0 | |
| 5808 || lcrecord_stats[i].bytes_freed != 0 | |
| 5809 || lcrecord_stats[i].instances_on_free_list != 0) | |
| 5810 { | |
| 5811 char buf [255]; | |
| 442 | 5812 const char *name = lrecord_implementations_table[i]->name; |
| 428 | 5813 int len = strlen (name); |
| 5814 /* save this for the FSFmacs-compatible part of the summary */ | |
| 460 | 5815 if (i == lrecord_type_vector) |
| 428 | 5816 gc_count_vector_total_size = |
| 5817 lcrecord_stats[i].bytes_in_use + lcrecord_stats[i].bytes_freed; | |
| 5818 | |
| 5819 sprintf (buf, "%s-storage", name); | |
| 5820 pl = gc_plist_hack (buf, lcrecord_stats[i].bytes_in_use, pl); | |
| 5821 /* Okay, simple pluralization check for `symbol-value-varalias' */ | |
| 5822 if (name[len-1] == 's') | |
| 5823 sprintf (buf, "%ses-freed", name); | |
| 5824 else | |
| 5825 sprintf (buf, "%ss-freed", name); | |
| 5826 if (lcrecord_stats[i].instances_freed != 0) | |
| 5827 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_freed, pl); | |
| 5828 if (name[len-1] == 's') | |
| 5829 sprintf (buf, "%ses-on-free-list", name); | |
| 5830 else | |
| 5831 sprintf (buf, "%ss-on-free-list", name); | |
| 5832 if (lcrecord_stats[i].instances_on_free_list != 0) | |
| 5833 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_on_free_list, | |
| 5834 pl); | |
| 5835 if (name[len-1] == 's') | |
| 5836 sprintf (buf, "%ses-used", name); | |
| 5837 else | |
| 5838 sprintf (buf, "%ss-used", name); | |
| 5839 pl = gc_plist_hack (buf, lcrecord_stats[i].instances_in_use, pl); | |
| 5840 } | |
| 5841 } | |
| 5842 | |
| 5843 HACK_O_MATIC (extent, "extent-storage", pl); | |
| 5844 pl = gc_plist_hack ("extents-free", gc_count_num_extent_freelist, pl); | |
| 5845 pl = gc_plist_hack ("extents-used", gc_count_num_extent_in_use, pl); | |
| 5846 HACK_O_MATIC (event, "event-storage", pl); | |
| 5847 pl = gc_plist_hack ("events-free", gc_count_num_event_freelist, pl); | |
| 5848 pl = gc_plist_hack ("events-used", gc_count_num_event_in_use, pl); | |
| 5849 HACK_O_MATIC (marker, "marker-storage", pl); | |
| 5850 pl = gc_plist_hack ("markers-free", gc_count_num_marker_freelist, pl); | |
| 5851 pl = gc_plist_hack ("markers-used", gc_count_num_marker_in_use, pl); | |
| 5852 HACK_O_MATIC (float, "float-storage", pl); | |
| 5853 pl = gc_plist_hack ("floats-free", gc_count_num_float_freelist, pl); | |
| 5854 pl = gc_plist_hack ("floats-used", gc_count_num_float_in_use, pl); | |
| 1983 | 5855 #ifdef HAVE_BIGNUM |
| 5856 HACK_O_MATIC (bignum, "bignum-storage", pl); | |
| 5857 pl = gc_plist_hack ("bignums-free", gc_count_num_bignum_freelist, pl); | |
| 5858 pl = gc_plist_hack ("bignums-used", gc_count_num_bignum_in_use, pl); | |
| 5859 #endif /* HAVE_BIGNUM */ | |
| 5860 #ifdef HAVE_RATIO | |
| 5861 HACK_O_MATIC (ratio, "ratio-storage", pl); | |
| 5862 pl = gc_plist_hack ("ratios-free", gc_count_num_ratio_freelist, pl); | |
| 5863 pl = gc_plist_hack ("ratios-used", gc_count_num_ratio_in_use, pl); | |
| 5864 #endif /* HAVE_RATIO */ | |
| 5865 #ifdef HAVE_BIGFLOAT | |
| 5866 HACK_O_MATIC (bigfloat, "bigfloat-storage", pl); | |
| 5867 pl = gc_plist_hack ("bigfloats-free", gc_count_num_bigfloat_freelist, pl); | |
| 5868 pl = gc_plist_hack ("bigfloats-used", gc_count_num_bigfloat_in_use, pl); | |
| 5869 #endif /* HAVE_BIGFLOAT */ | |
| 428 | 5870 HACK_O_MATIC (string, "string-header-storage", pl); |
| 5871 pl = gc_plist_hack ("long-strings-total-length", | |
| 5872 gc_count_string_total_size | |
| 5873 - gc_count_short_string_total_size, pl); | |
| 5874 HACK_O_MATIC (string_chars, "short-string-storage", pl); | |
| 5875 pl = gc_plist_hack ("short-strings-total-length", | |
| 5876 gc_count_short_string_total_size, pl); | |
| 5877 pl = gc_plist_hack ("strings-free", gc_count_num_string_freelist, pl); | |
| 5878 pl = gc_plist_hack ("long-strings-used", | |
| 5879 gc_count_num_string_in_use | |
| 5880 - gc_count_num_short_string_in_use, pl); | |
| 5881 pl = gc_plist_hack ("short-strings-used", | |
| 5882 gc_count_num_short_string_in_use, pl); | |
| 5883 | |
| 5884 HACK_O_MATIC (compiled_function, "compiled-function-storage", pl); | |
| 5885 pl = gc_plist_hack ("compiled-functions-free", | |
| 5886 gc_count_num_compiled_function_freelist, pl); | |
| 5887 pl = gc_plist_hack ("compiled-functions-used", | |
| 5888 gc_count_num_compiled_function_in_use, pl); | |
| 5889 | |
| 5890 HACK_O_MATIC (symbol, "symbol-storage", pl); | |
| 5891 pl = gc_plist_hack ("symbols-free", gc_count_num_symbol_freelist, pl); | |
| 5892 pl = gc_plist_hack ("symbols-used", gc_count_num_symbol_in_use, pl); | |
| 5893 | |
| 5894 HACK_O_MATIC (cons, "cons-storage", pl); | |
| 5895 pl = gc_plist_hack ("conses-free", gc_count_num_cons_freelist, pl); | |
| 5896 pl = gc_plist_hack ("conses-used", gc_count_num_cons_in_use, pl); | |
| 5897 | |
| 5898 /* The things we do for backwards-compatibility */ | |
| 5899 return | |
| 5900 list6 (Fcons (make_int (gc_count_num_cons_in_use), | |
| 5901 make_int (gc_count_num_cons_freelist)), | |
| 5902 Fcons (make_int (gc_count_num_symbol_in_use), | |
| 5903 make_int (gc_count_num_symbol_freelist)), | |
| 5904 Fcons (make_int (gc_count_num_marker_in_use), | |
| 5905 make_int (gc_count_num_marker_freelist)), | |
| 5906 make_int (gc_count_string_total_size), | |
| 5907 make_int (gc_count_vector_total_size), | |
| 5908 pl); | |
| 5909 } | |
| 5910 #undef HACK_O_MATIC | |
| 2720 | 5911 #endif /* not MC_ALLOC */ |
| 428 | 5912 |
| 5913 DEFUN ("consing-since-gc", Fconsing_since_gc, 0, 0, "", /* | |
| 5914 Return the number of bytes consed since the last garbage collection. | |
| 5915 \"Consed\" is a misnomer in that this actually counts allocation | |
| 5916 of all different kinds of objects, not just conses. | |
| 5917 | |
| 5918 If this value exceeds `gc-cons-threshold', a garbage collection happens. | |
| 5919 */ | |
| 5920 ()) | |
| 5921 { | |
| 5922 return make_int (consing_since_gc); | |
| 5923 } | |
| 5924 | |
| 440 | 5925 #if 0 |
| 444 | 5926 DEFUN ("memory-limit", Fmemory_limit, 0, 0, 0, /* |
| 801 | 5927 Return the address of the last byte XEmacs has allocated, divided by 1024. |
| 5928 This may be helpful in debugging XEmacs's memory usage. | |
| 428 | 5929 The value is divided by 1024 to make sure it will fit in a lisp integer. |
| 5930 */ | |
| 5931 ()) | |
| 5932 { | |
| 5933 return make_int ((EMACS_INT) sbrk (0) / 1024); | |
| 5934 } | |
| 440 | 5935 #endif |
| 428 | 5936 |
| 801 | 5937 DEFUN ("memory-usage", Fmemory_usage, 0, 0, 0, /* |
| 5938 Return the total number of bytes used by the data segment in XEmacs. | |
| 5939 This may be helpful in debugging XEmacs's memory usage. | |
| 5940 */ | |
| 5941 ()) | |
| 5942 { | |
| 5943 return make_int (total_data_usage ()); | |
| 5944 } | |
| 5945 | |
| 851 | 5946 void |
| 5947 recompute_funcall_allocation_flag (void) | |
| 5948 { | |
| 887 | 5949 funcall_allocation_flag = |
| 5950 need_to_garbage_collect || | |
| 5951 need_to_check_c_alloca || | |
| 5952 need_to_signal_post_gc; | |
| 851 | 5953 } |
| 5954 | |
| 801 | 5955 /* True if it's time to garbage collect now. */ |
| 814 | 5956 static void |
| 5957 recompute_need_to_garbage_collect (void) | |
| 801 | 5958 { |
| 5959 if (always_gc) | |
| 814 | 5960 need_to_garbage_collect = 1; |
| 5961 else | |
| 5962 need_to_garbage_collect = | |
| 5963 (consing_since_gc > gc_cons_threshold | |
| 5964 #if 0 /* #### implement this better */ | |
| 5965 && | |
| 5966 (100 * consing_since_gc) / total_data_usage () >= | |
| 5967 gc_cons_percentage | |
| 5968 #endif /* 0 */ | |
| 5969 ); | |
| 851 | 5970 recompute_funcall_allocation_flag (); |
| 801 | 5971 } |
| 5972 | |
| 428 | 5973 |
| 5974 int | |
| 5975 object_dead_p (Lisp_Object obj) | |
| 5976 { | |
| 5977 return ((BUFFERP (obj) && !BUFFER_LIVE_P (XBUFFER (obj))) || | |
| 5978 (FRAMEP (obj) && !FRAME_LIVE_P (XFRAME (obj))) || | |
| 5979 (WINDOWP (obj) && !WINDOW_LIVE_P (XWINDOW (obj))) || | |
| 5980 (DEVICEP (obj) && !DEVICE_LIVE_P (XDEVICE (obj))) || | |
| 5981 (CONSOLEP (obj) && !CONSOLE_LIVE_P (XCONSOLE (obj))) || | |
| 5982 (EVENTP (obj) && !EVENT_LIVE_P (XEVENT (obj))) || | |
| 5983 (EXTENTP (obj) && !EXTENT_LIVE_P (XEXTENT (obj)))); | |
| 5984 } | |
| 5985 | |
| 5986 #ifdef MEMORY_USAGE_STATS | |
| 5987 | |
| 5988 /* Attempt to determine the actual amount of space that is used for | |
| 5989 the block allocated starting at PTR, supposedly of size "CLAIMED_SIZE". | |
| 5990 | |
| 5991 It seems that the following holds: | |
| 5992 | |
| 5993 1. When using the old allocator (malloc.c): | |
| 5994 | |
| 5995 -- blocks are always allocated in chunks of powers of two. For | |
| 5996 each block, there is an overhead of 8 bytes if rcheck is not | |
| 5997 defined, 20 bytes if it is defined. In other words, a | |
| 5998 one-byte allocation needs 8 bytes of overhead for a total of | |
| 5999 9 bytes, and needs to have 16 bytes of memory chunked out for | |
| 6000 it. | |
| 6001 | |
| 6002 2. When using the new allocator (gmalloc.c): | |
| 6003 | |
| 6004 -- blocks are always allocated in chunks of powers of two up | |
| 6005 to 4096 bytes. Larger blocks are allocated in chunks of | |
| 6006 an integral multiple of 4096 bytes. The minimum block | |
| 6007 size is 2*sizeof (void *), or 16 bytes if SUNOS_LOCALTIME_BUG | |
| 6008 is defined. There is no per-block overhead, but there | |
| 6009 is an overhead of 3*sizeof (size_t) for each 4096 bytes | |
| 6010 allocated. | |
| 6011 | |
| 6012 3. When using the system malloc, anything goes, but they are | |
| 6013 generally slower and more space-efficient than the GNU | |
| 6014 allocators. One possibly reasonable assumption to make | |
| 6015 for want of better data is that sizeof (void *), or maybe | |
| 6016 2 * sizeof (void *), is required as overhead and that | |
| 6017 blocks are allocated in the minimum required size except | |
| 6018 that some minimum block size is imposed (e.g. 16 bytes). */ | |
| 6019 | |
| 665 | 6020 Bytecount |
| 2286 | 6021 malloced_storage_size (void *UNUSED (ptr), Bytecount claimed_size, |
| 428 | 6022 struct overhead_stats *stats) |
| 6023 { | |
| 665 | 6024 Bytecount orig_claimed_size = claimed_size; |
| 428 | 6025 |
| 6026 #ifdef GNU_MALLOC | |
| 665 | 6027 if (claimed_size < (Bytecount) (2 * sizeof (void *))) |
| 428 | 6028 claimed_size = 2 * sizeof (void *); |
| 6029 # ifdef SUNOS_LOCALTIME_BUG | |
| 6030 if (claimed_size < 16) | |
| 6031 claimed_size = 16; | |
| 6032 # endif | |
| 6033 if (claimed_size < 4096) | |
| 6034 { | |
| 2260 | 6035 /* fxg: rename log->log2 to supress gcc3 shadow warning */ |
| 6036 int log2 = 1; | |
| 428 | 6037 |
| 6038 /* compute the log base two, more or less, then use it to compute | |
| 6039 the block size needed. */ | |
| 6040 claimed_size--; | |
| 6041 /* It's big, it's heavy, it's wood! */ | |
| 6042 while ((claimed_size /= 2) != 0) | |
| 2260 | 6043 ++log2; |
| 428 | 6044 claimed_size = 1; |
| 6045 /* It's better than bad, it's good! */ | |
| 2260 | 6046 while (log2 > 0) |
| 428 | 6047 { |
| 6048 claimed_size *= 2; | |
| 2260 | 6049 log2--; |
| 428 | 6050 } |
| 6051 /* We have to come up with some average about the amount of | |
| 6052 blocks used. */ | |
| 665 | 6053 if ((Bytecount) (rand () & 4095) < claimed_size) |
| 428 | 6054 claimed_size += 3 * sizeof (void *); |
| 6055 } | |
| 6056 else | |
| 6057 { | |
| 6058 claimed_size += 4095; | |
| 6059 claimed_size &= ~4095; | |
| 6060 claimed_size += (claimed_size / 4096) * 3 * sizeof (size_t); | |
| 6061 } | |
| 6062 | |
| 6063 #elif defined (SYSTEM_MALLOC) | |
| 6064 | |
| 6065 if (claimed_size < 16) | |
| 6066 claimed_size = 16; | |
| 6067 claimed_size += 2 * sizeof (void *); | |
| 6068 | |
| 6069 #else /* old GNU allocator */ | |
| 6070 | |
| 6071 # ifdef rcheck /* #### may not be defined here */ | |
| 6072 claimed_size += 20; | |
| 6073 # else | |
| 6074 claimed_size += 8; | |
| 6075 # endif | |
| 6076 { | |
| 2260 | 6077 /* fxg: rename log->log2 to supress gcc3 shadow warning */ |
| 6078 int log2 = 1; | |
| 428 | 6079 |
| 6080 /* compute the log base two, more or less, then use it to compute | |
| 6081 the block size needed. */ | |
| 6082 claimed_size--; | |
| 6083 /* It's big, it's heavy, it's wood! */ | |
| 6084 while ((claimed_size /= 2) != 0) | |
| 2260 | 6085 ++log2; |
| 428 | 6086 claimed_size = 1; |
| 6087 /* It's better than bad, it's good! */ | |
| 2260 | 6088 while (log2 > 0) |
| 428 | 6089 { |
| 6090 claimed_size *= 2; | |
| 2260 | 6091 log2--; |
| 428 | 6092 } |
| 6093 } | |
| 6094 | |
| 6095 #endif /* old GNU allocator */ | |
| 6096 | |
| 6097 if (stats) | |
| 6098 { | |
| 6099 stats->was_requested += orig_claimed_size; | |
| 6100 stats->malloc_overhead += claimed_size - orig_claimed_size; | |
| 6101 } | |
| 6102 return claimed_size; | |
| 6103 } | |
| 6104 | |
| 2720 | 6105 #ifndef MC_ALLOC |
| 665 | 6106 Bytecount |
| 6107 fixed_type_block_overhead (Bytecount size) | |
| 428 | 6108 { |
| 665 | 6109 Bytecount per_block = TYPE_ALLOC_SIZE (cons, unsigned char); |
| 6110 Bytecount overhead = 0; | |
| 6111 Bytecount storage_size = malloced_storage_size (0, per_block, 0); | |
| 428 | 6112 while (size >= per_block) |
| 6113 { | |
| 6114 size -= per_block; | |
| 6115 overhead += sizeof (void *) + per_block - storage_size; | |
| 6116 } | |
| 6117 if (rand () % per_block < size) | |
| 6118 overhead += sizeof (void *) + per_block - storage_size; | |
| 6119 return overhead; | |
| 6120 } | |
| 2720 | 6121 #endif /* not MC_ALLOC */ |
| 428 | 6122 #endif /* MEMORY_USAGE_STATS */ |
| 6123 | |
| 6124 | |
| 6125 /* Initialization */ | |
| 771 | 6126 static void |
| 1204 | 6127 common_init_alloc_early (void) |
| 428 | 6128 { |
| 771 | 6129 #ifndef Qzero |
| 6130 Qzero = make_int (0); /* Only used if Lisp_Object is a union type */ | |
| 6131 #endif | |
| 6132 | |
| 6133 #ifndef Qnull_pointer | |
| 6134 /* C guarantees that Qnull_pointer will be initialized to all 0 bits, | |
| 6135 so the following is actually a no-op. */ | |
| 793 | 6136 Qnull_pointer = wrap_pointer_1 (0); |
| 771 | 6137 #endif |
| 6138 | |
| 428 | 6139 gc_generation_number[0] = 0; |
| 2720 | 6140 #ifndef MC_ALLOC |
| 428 | 6141 breathing_space = 0; |
| 2720 | 6142 #endif /* not MC_ALLOC */ |
| 771 | 6143 Vgc_message = Qzero; |
| 2720 | 6144 #ifndef MC_ALLOC |
| 428 | 6145 all_lcrecords = 0; |
| 2720 | 6146 #endif /* not MC_ALLOC */ |
| 428 | 6147 ignore_malloc_warnings = 1; |
| 6148 #ifdef DOUG_LEA_MALLOC | |
| 6149 mallopt (M_TRIM_THRESHOLD, 128*1024); /* trim threshold */ | |
| 6150 mallopt (M_MMAP_THRESHOLD, 64*1024); /* mmap threshold */ | |
| 6151 #if 0 /* Moved to emacs.c */ | |
| 6152 mallopt (M_MMAP_MAX, 64); /* max. number of mmap'ed areas */ | |
| 6153 #endif | |
| 6154 #endif | |
| 2720 | 6155 init_string_chars_alloc (); |
| 6156 #ifndef MC_ALLOC | |
| 428 | 6157 init_string_alloc (); |
| 6158 init_string_chars_alloc (); | |
| 6159 init_cons_alloc (); | |
| 6160 init_symbol_alloc (); | |
| 6161 init_compiled_function_alloc (); | |
| 6162 init_float_alloc (); | |
| 1983 | 6163 #ifdef HAVE_BIGNUM |
| 6164 init_bignum_alloc (); | |
| 6165 #endif | |
| 6166 #ifdef HAVE_RATIO | |
| 6167 init_ratio_alloc (); | |
| 6168 #endif | |
| 6169 #ifdef HAVE_BIGFLOAT | |
| 6170 init_bigfloat_alloc (); | |
| 6171 #endif | |
| 428 | 6172 init_marker_alloc (); |
| 6173 init_extent_alloc (); | |
| 6174 init_event_alloc (); | |
| 1204 | 6175 #ifdef EVENT_DATA_AS_OBJECTS |
| 934 | 6176 init_key_data_alloc (); |
| 6177 init_button_data_alloc (); | |
| 6178 init_motion_data_alloc (); | |
| 6179 init_process_data_alloc (); | |
| 6180 init_timeout_data_alloc (); | |
| 6181 init_magic_data_alloc (); | |
| 6182 init_magic_eval_data_alloc (); | |
| 6183 init_eval_data_alloc (); | |
| 6184 init_misc_user_data_alloc (); | |
| 1204 | 6185 #endif /* EVENT_DATA_AS_OBJECTS */ |
| 2720 | 6186 #endif /* not MC_ALLOC */ |
| 428 | 6187 |
| 6188 ignore_malloc_warnings = 0; | |
| 6189 | |
| 452 | 6190 if (staticpros_nodump) |
| 6191 Dynarr_free (staticpros_nodump); | |
| 6192 staticpros_nodump = Dynarr_new2 (Lisp_Object_ptr_dynarr, Lisp_Object *); | |
| 6193 Dynarr_resize (staticpros_nodump, 100); /* merely a small optimization */ | |
| 771 | 6194 #ifdef DEBUG_XEMACS |
| 6195 if (staticpro_nodump_names) | |
| 6196 Dynarr_free (staticpro_nodump_names); | |
| 6197 staticpro_nodump_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6198 Dynarr_resize (staticpro_nodump_names, 100); /* ditto */ | |
| 6199 #endif | |
| 428 | 6200 |
| 2720 | 6201 #ifdef MC_ALLOC |
| 6202 mcpros = Dynarr_new2 (Lisp_Object_dynarr, Lisp_Object); | |
| 6203 Dynarr_resize (mcpros, 1410); /* merely a small optimization */ | |
| 6204 dump_add_root_block_ptr (&mcpros, &mcpros_description); | |
| 6205 #ifdef DEBUG_XEMACS | |
| 6206 mcpro_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6207 Dynarr_resize (mcpro_names, 1410); /* merely a small optimization */ | |
| 6208 dump_add_root_block_ptr (&mcpro_names, &mcpro_names_description); | |
| 6209 #endif | |
| 6210 #endif /* MC_ALLOC */ | |
| 6211 | |
| 428 | 6212 consing_since_gc = 0; |
| 814 | 6213 need_to_garbage_collect = always_gc; |
| 851 | 6214 need_to_check_c_alloca = 0; |
| 6215 funcall_allocation_flag = 0; | |
| 6216 funcall_alloca_count = 0; | |
| 814 | 6217 |
| 428 | 6218 #if 1 |
| 6219 gc_cons_threshold = 500000; /* XEmacs change */ | |
| 6220 #else | |
| 6221 gc_cons_threshold = 15000; /* debugging */ | |
| 6222 #endif | |
| 801 | 6223 gc_cons_percentage = 0; /* #### 20; Don't have an accurate measure of |
| 6224 memory usage on Windows; not verified on other | |
| 6225 systems */ | |
| 428 | 6226 lrecord_uid_counter = 259; |
| 2720 | 6227 #ifndef MC_ALLOC |
| 428 | 6228 debug_string_purity = 0; |
| 2720 | 6229 #endif /* not MC_ALLOC */ |
| 428 | 6230 |
| 6231 gc_currently_forbidden = 0; | |
| 6232 gc_hooks_inhibited = 0; | |
| 6233 | |
| 800 | 6234 #ifdef ERROR_CHECK_TYPES |
| 428 | 6235 ERROR_ME.really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = |
| 6236 666; | |
| 6237 ERROR_ME_NOT. | |
| 6238 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = 42; | |
| 6239 ERROR_ME_WARN. | |
| 6240 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = | |
| 6241 3333632; | |
| 793 | 6242 ERROR_ME_DEBUG_WARN. |
| 6243 really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = | |
| 6244 8675309; | |
| 800 | 6245 #endif /* ERROR_CHECK_TYPES */ |
| 428 | 6246 } |
| 6247 | |
| 2720 | 6248 #ifndef MC_ALLOC |
| 771 | 6249 static void |
| 6250 init_lcrecord_lists (void) | |
| 6251 { | |
| 6252 int i; | |
| 6253 | |
| 6254 for (i = 0; i < countof (lrecord_implementations_table); i++) | |
| 6255 { | |
| 6256 all_lcrecord_lists[i] = Qzero; /* Qnil not yet set */ | |
| 6257 staticpro_nodump (&all_lcrecord_lists[i]); | |
| 6258 } | |
| 6259 } | |
| 2720 | 6260 #endif /* not MC_ALLOC */ |
| 771 | 6261 |
| 6262 void | |
| 1204 | 6263 init_alloc_early (void) |
| 771 | 6264 { |
| 1204 | 6265 #if defined (__cplusplus) && defined (ERROR_CHECK_GC) |
| 6266 static struct gcpro initial_gcpro; | |
| 6267 | |
| 6268 initial_gcpro.next = 0; | |
| 6269 initial_gcpro.var = &Qnil; | |
| 6270 initial_gcpro.nvars = 1; | |
| 6271 gcprolist = &initial_gcpro; | |
| 6272 #else | |
| 6273 gcprolist = 0; | |
| 6274 #endif /* defined (__cplusplus) && defined (ERROR_CHECK_GC) */ | |
| 6275 } | |
| 6276 | |
| 6277 void | |
| 6278 reinit_alloc_early (void) | |
| 6279 { | |
| 6280 common_init_alloc_early (); | |
| 2720 | 6281 #ifndef MC_ALLOC |
| 771 | 6282 init_lcrecord_lists (); |
| 2720 | 6283 #endif /* not MC_ALLOC */ |
| 771 | 6284 } |
| 6285 | |
| 428 | 6286 void |
| 6287 init_alloc_once_early (void) | |
| 6288 { | |
| 1204 | 6289 common_init_alloc_early (); |
| 428 | 6290 |
| 442 | 6291 { |
| 6292 int i; | |
| 6293 for (i = 0; i < countof (lrecord_implementations_table); i++) | |
| 6294 lrecord_implementations_table[i] = 0; | |
| 6295 } | |
| 6296 | |
| 6297 INIT_LRECORD_IMPLEMENTATION (cons); | |
| 6298 INIT_LRECORD_IMPLEMENTATION (vector); | |
| 6299 INIT_LRECORD_IMPLEMENTATION (string); | |
| 2720 | 6300 #ifndef MC_ALLOC |
| 442 | 6301 INIT_LRECORD_IMPLEMENTATION (lcrecord_list); |
| 1204 | 6302 INIT_LRECORD_IMPLEMENTATION (free); |
| 2720 | 6303 #endif /* not MC_ALLOC */ |
| 428 | 6304 |
| 452 | 6305 staticpros = Dynarr_new2 (Lisp_Object_ptr_dynarr, Lisp_Object *); |
| 6306 Dynarr_resize (staticpros, 1410); /* merely a small optimization */ | |
| 2367 | 6307 dump_add_root_block_ptr (&staticpros, &staticpros_description); |
| 771 | 6308 #ifdef DEBUG_XEMACS |
| 6309 staticpro_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6310 Dynarr_resize (staticpro_names, 1410); /* merely a small optimization */ | |
| 2367 | 6311 dump_add_root_block_ptr (&staticpro_names, &staticpro_names_description); |
| 771 | 6312 #endif |
| 6313 | |
| 2720 | 6314 #ifdef MC_ALLOC |
| 6315 mcpros = Dynarr_new2 (Lisp_Object_dynarr, Lisp_Object); | |
| 6316 Dynarr_resize (mcpros, 1410); /* merely a small optimization */ | |
| 6317 dump_add_root_block_ptr (&mcpros, &mcpros_description); | |
| 6318 #ifdef DEBUG_XEMACS | |
| 6319 mcpro_names = Dynarr_new2 (char_ptr_dynarr, char *); | |
| 6320 Dynarr_resize (mcpro_names, 1410); /* merely a small optimization */ | |
| 6321 dump_add_root_block_ptr (&mcpro_names, &mcpro_names_description); | |
| 6322 #endif | |
| 6323 #endif /* MC_ALLOC */ | |
| 6324 | |
| 6325 #ifndef MC_ALLOC | |
| 771 | 6326 init_lcrecord_lists (); |
| 2720 | 6327 #endif /* not MC_ALLOC */ |
| 428 | 6328 } |
| 6329 | |
| 6330 void | |
| 6331 syms_of_alloc (void) | |
| 6332 { | |
| 442 | 6333 DEFSYMBOL (Qpre_gc_hook); |
| 6334 DEFSYMBOL (Qpost_gc_hook); | |
| 6335 DEFSYMBOL (Qgarbage_collecting); | |
| 428 | 6336 |
| 6337 DEFSUBR (Fcons); | |
| 6338 DEFSUBR (Flist); | |
| 6339 DEFSUBR (Fvector); | |
| 6340 DEFSUBR (Fbit_vector); | |
| 6341 DEFSUBR (Fmake_byte_code); | |
| 6342 DEFSUBR (Fmake_list); | |
| 6343 DEFSUBR (Fmake_vector); | |
| 6344 DEFSUBR (Fmake_bit_vector); | |
| 6345 DEFSUBR (Fmake_string); | |
| 6346 DEFSUBR (Fstring); | |
| 6347 DEFSUBR (Fmake_symbol); | |
| 6348 DEFSUBR (Fmake_marker); | |
| 6349 DEFSUBR (Fpurecopy); | |
| 2775 | 6350 #ifdef MC_ALLOC_TYPE_STATS |
| 6351 DEFSUBR (Flrecord_stats); | |
| 6352 #endif /* MC_ALLOC_TYPE_STATS */ | |
| 428 | 6353 DEFSUBR (Fgarbage_collect); |
| 440 | 6354 #if 0 |
| 428 | 6355 DEFSUBR (Fmemory_limit); |
| 440 | 6356 #endif |
| 801 | 6357 DEFSUBR (Fmemory_usage); |
| 428 | 6358 DEFSUBR (Fconsing_since_gc); |
| 6359 } | |
| 6360 | |
| 6361 void | |
| 6362 vars_of_alloc (void) | |
| 6363 { | |
| 1292 | 6364 QSin_garbage_collection = build_msg_string ("(in garbage collection)"); |
| 6365 staticpro (&QSin_garbage_collection); | |
| 6366 | |
| 428 | 6367 DEFVAR_INT ("gc-cons-threshold", &gc_cons_threshold /* |
| 6368 *Number of bytes of consing between garbage collections. | |
| 6369 \"Consing\" is a misnomer in that this actually counts allocation | |
| 6370 of all different kinds of objects, not just conses. | |
| 6371 Garbage collection can happen automatically once this many bytes have been | |
| 6372 allocated since the last garbage collection. All data types count. | |
| 6373 | |
| 6374 Garbage collection happens automatically when `eval' or `funcall' are | |
| 6375 called. (Note that `funcall' is called implicitly as part of evaluation.) | |
| 6376 By binding this temporarily to a large number, you can effectively | |
| 6377 prevent garbage collection during a part of the program. | |
| 6378 | |
| 853 | 6379 Normally, you cannot set this value less than 10,000 (if you do, it is |
| 6380 automatically reset during the next garbage collection). However, if | |
| 6381 XEmacs was compiled with DEBUG_XEMACS, this does not happen, allowing | |
| 6382 you to set this value very low to track down problems with insufficient | |
| 6383 GCPRO'ing. If you set this to a negative number, garbage collection will | |
| 6384 happen at *EVERY* call to `eval' or `funcall'. This is an extremely | |
| 6385 effective way to check GCPRO problems, but be warned that your XEmacs | |
| 6386 will be unusable! You almost certainly won't have the patience to wait | |
| 6387 long enough to be able to set it back. | |
| 6388 | |
| 428 | 6389 See also `consing-since-gc'. |
| 6390 */ ); | |
| 6391 | |
| 801 | 6392 DEFVAR_INT ("gc-cons-percentage", &gc_cons_percentage /* |
| 6393 *Percentage of memory allocated between garbage collections. | |
| 6394 | |
| 6395 Garbage collection will happen if this percentage of the total amount of | |
| 6396 memory used for data has been allocated since the last garbage collection. | |
| 6397 However, it will not happen if less than `gc-cons-threshold' bytes have | |
| 6398 been allocated -- this sets an absolute minimum in case very little data | |
| 6399 has been allocated or the percentage is set very low. Set this to 0 to | |
| 6400 have garbage collection always happen after `gc-cons-threshold' bytes have | |
| 6401 been allocated, regardless of current memory usage. | |
| 6402 | |
| 6403 Garbage collection happens automatically when `eval' or `funcall' are | |
| 6404 called. (Note that `funcall' is called implicitly as part of evaluation.) | |
| 6405 By binding this temporarily to a large number, you can effectively | |
| 6406 prevent garbage collection during a part of the program. | |
| 6407 | |
| 6408 See also `consing-since-gc'. | |
| 6409 */ ); | |
| 6410 | |
| 428 | 6411 #ifdef DEBUG_XEMACS |
| 6412 DEFVAR_INT ("debug-allocation", &debug_allocation /* | |
| 6413 If non-zero, print out information to stderr about all objects allocated. | |
| 6414 See also `debug-allocation-backtrace-length'. | |
| 6415 */ ); | |
| 6416 debug_allocation = 0; | |
| 6417 | |
| 6418 DEFVAR_INT ("debug-allocation-backtrace-length", | |
| 6419 &debug_allocation_backtrace_length /* | |
| 6420 Length (in stack frames) of short backtrace printed out by `debug-allocation'. | |
| 6421 */ ); | |
| 6422 debug_allocation_backtrace_length = 2; | |
| 6423 #endif | |
| 6424 | |
| 6425 DEFVAR_BOOL ("purify-flag", &purify_flag /* | |
| 6426 Non-nil means loading Lisp code in order to dump an executable. | |
| 6427 This means that certain objects should be allocated in readonly space. | |
| 6428 */ ); | |
| 6429 | |
| 1154 | 6430 DEFVAR_BOOL ("garbage-collection-messages", &garbage_collection_messages /* |
| 6431 Non-nil means display messages at start and end of garbage collection. | |
| 6432 */ ); | |
| 6433 garbage_collection_messages = 0; | |
| 6434 | |
| 428 | 6435 DEFVAR_LISP ("pre-gc-hook", &Vpre_gc_hook /* |
| 6436 Function or functions to be run just before each garbage collection. | |
| 6437 Interrupts, garbage collection, and errors are inhibited while this hook | |
| 6438 runs, so be extremely careful in what you add here. In particular, avoid | |
| 6439 consing, and do not interact with the user. | |
| 6440 */ ); | |
| 6441 Vpre_gc_hook = Qnil; | |
| 6442 | |
| 6443 DEFVAR_LISP ("post-gc-hook", &Vpost_gc_hook /* | |
| 6444 Function or functions to be run just after each garbage collection. | |
| 6445 Interrupts, garbage collection, and errors are inhibited while this hook | |
| 887 | 6446 runs. Each hook is called with one argument which is an alist with |
| 6447 finalization data. | |
| 428 | 6448 */ ); |
| 6449 Vpost_gc_hook = Qnil; | |
| 6450 | |
| 6451 DEFVAR_LISP ("gc-message", &Vgc_message /* | |
| 6452 String to print to indicate that a garbage collection is in progress. | |
| 6453 This is printed in the echo area. If the selected frame is on a | |
| 6454 window system and `gc-pointer-glyph' specifies a value (i.e. a pointer | |
| 6455 image instance) in the domain of the selected frame, the mouse pointer | |
| 6456 will change instead of this message being printed. | |
| 6457 */ ); | |
| 6458 Vgc_message = build_string (gc_default_message); | |
| 6459 | |
| 6460 DEFVAR_LISP ("gc-pointer-glyph", &Vgc_pointer_glyph /* | |
| 6461 Pointer glyph used to indicate that a garbage collection is in progress. | |
| 6462 If the selected window is on a window system and this glyph specifies a | |
| 6463 value (i.e. a pointer image instance) in the domain of the selected | |
| 6464 window, the pointer will be changed as specified during garbage collection. | |
| 6465 Otherwise, a message will be printed in the echo area, as controlled | |
| 6466 by `gc-message'. | |
| 6467 */ ); | |
| 6468 } | |
| 6469 | |
| 6470 void | |
| 6471 complex_vars_of_alloc (void) | |
| 6472 { | |
| 6473 Vgc_pointer_glyph = Fmake_glyph_internal (Qpointer); | |
| 6474 } |