Mercurial > hg > xemacs-beta
annotate src/free-hook.c @ 5135:59bac09f31d2
Final merge of branch ben-lisp-object into default branch
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sun, 07 Mar 2010 06:52:32 -0600 |
| parents | 6f2158fa75ed |
| children | 88bd4f3ef8e4 |
| rev | line source |
|---|---|
| 428 | 1 /* This file is part of XEmacs. |
| 2 | |
| 3 XEmacs is free software; you can redistribute it and/or modify it | |
| 4 under the terms of the GNU General Public License as published by the | |
| 5 Free Software Foundation; either version 2, or (at your option) any | |
| 6 later version. | |
| 7 | |
| 8 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 11 for more details. | |
| 12 | |
| 13 You should have received a copy of the GNU General Public License | |
| 14 along with XEmacs; see the file COPYING. If not, write to | |
| 15 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 16 Boston, MA 02111-1307, USA. */ | |
| 17 | |
| 18 /* Synched up with: Not in FSF. */ | |
| 19 | |
| 20 /* Debugging hooks for malloc. */ | |
| 21 | |
| 22 /* These hooks work with gmalloc to catch allocation errors. | |
| 23 In particular, the following is trapped: | |
| 24 | |
| 25 * Freeing the same pointer twice. | |
| 26 * Trying to free a pointer not returned by malloc. | |
| 27 * Trying to realloc a pointer not returned by malloc. | |
| 28 | |
| 1204 | 29 In addition, every word of every block freed is set to 0xdeadbeef |
| 30 (-559038737). This causes many uses of freed storage to be trapped or | |
| 31 recognized. | |
| 428 | 32 |
| 33 When you use this, the storage used by the last FREE_QUEUE_LIMIT | |
| 34 calls to free() is not recycled. When you call free for the Nth | |
| 35 time, the (N - FREE_QUEUE_LIMIT)'th block is actually recycled. | |
| 36 | |
| 37 For these last FREE_QUEUE_LIMIT calls to free() a backtrace is | |
| 38 saved showing where it was called from. The function | |
| 39 find_backtrace() is provided here to be called from GDB with a | |
| 40 pointer (such as would be passed to free()) as argument, e.g. | |
| 41 (gdb) p/a *find_backtrace (0x234000). If SAVE_ARGS is defined, | |
| 42 the first three arguments to each function are saved as well as the | |
| 43 return addresses. | |
| 44 | |
| 45 If UNMAPPED_FREE is defined, instead of setting every word of freed | |
| 46 storage to 0xdeadbeef, every call to malloc goes on its own page(s). | |
| 47 When free() is called, the block is read and write protected. This | |
| 48 is very useful when debugging, since it usually generates a bus error | |
| 49 when the deadbeef hack might only cause some garbage to be printed. | |
| 50 However, this is too slow for everyday use, since it takes an enormous | |
| 51 number of pages. | |
| 52 | |
| 53 | |
| 54 Some other features that would be useful are: | |
| 55 | |
| 56 * Checking for storage leaks. | |
| 57 This could be done by a GC-like facility that would scan the data | |
| 58 segment looking for pointers to allocated storage and tell you | |
| 59 about those that are no longer referenced. This could be invoked | |
| 60 at any time. Another possibility is to report on what allocated | |
| 61 storage is still in use when the process is exited. Typically | |
| 62 there will be a large amount, so this might not be very useful. | |
| 63 */ | |
| 64 | |
| 65 #ifdef emacs | |
| 66 #include <config.h> | |
| 67 #include "lisp.h" | |
| 68 #else | |
| 69 void *malloc (size_t); | |
| 70 #endif | |
| 71 | |
| 72 #if !defined(HAVE_LIBMCHECK) | |
| 73 #include <stdio.h> | |
| 74 | |
| 75 #include "hash.h" | |
| 76 | |
| 77 #ifdef UNMAPPED_FREE | |
| 78 #include <sys/mman.h> | |
| 79 #include <sys/param.h> | |
| 80 #define ROUND_UP_TO_PAGE(i) (((i) + PAGEOFFSET) & PAGEMASK) | |
| 81 #endif | |
| 82 | |
| 83 #include <sys/types.h> | |
| 84 | |
| 85 /* System function prototypes don't belong in C source files */ | |
| 86 /* extern void free (void *); */ | |
| 87 | |
| 88 static struct hash_table *pointer_table; | |
| 89 | |
| 90 extern void (*__free_hook) (void *); | |
| 91 extern void *(*__malloc_hook) (size_t); | |
| 92 | |
| 93 static void *check_malloc (size_t); | |
| 94 | |
| 95 typedef void (*fun_ptr) (void); | |
| 96 | |
| 97 /* free_queue is not too useful without backtrace logging */ | |
| 98 #define FREE_QUEUE_LIMIT 1 | |
| 99 #define TRACE_LIMIT 20 | |
| 100 | |
| 101 typedef struct { | |
| 102 fun_ptr return_pc; | |
| 103 #ifdef SAVE_ARGS | |
| 104 void *arg[3]; | |
| 105 #endif | |
| 106 } fun_entry; | |
| 107 | |
| 108 typedef struct { | |
| 109 void *address; | |
| 110 unsigned long length; | |
| 111 } free_queue_entry; | |
| 112 | |
| 113 static free_queue_entry free_queue[FREE_QUEUE_LIMIT]; | |
| 114 | |
| 115 static int current_free; | |
| 116 | |
| 117 static int strict_free_check; | |
| 118 | |
| 119 static void | |
| 120 check_free (void *ptr) | |
| 121 { | |
| 122 __free_hook = 0; | |
| 123 __malloc_hook = 0; | |
| 124 if (!pointer_table) | |
| 125 pointer_table = make_hash_table (max (100, FREE_QUEUE_LIMIT * 2)); | |
| 126 if (ptr != 0) | |
| 127 { | |
| 128 long size; | |
| 129 #ifdef UNMAPPED_FREE | |
| 130 unsigned long rounded_up_size; | |
| 131 #endif | |
| 132 | |
| 133 EMACS_INT present = (EMACS_INT) gethash (ptr, pointer_table, | |
| 2519 | 134 (const void **) |
| 135 (void *) &size); | |
| 428 | 136 |
| 137 if (!present) | |
| 138 { | |
| 139 /* This can only happen if you try to free something that didn't | |
| 140 come from malloc */ | |
| 141 #if !defined(__linux__) | |
| 142 /* I originally wrote: "There's really no need to drop core." | |
| 143 I have seen the error of my ways. -slb */ | |
|
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Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
3988
diff
changeset
|
144 assert (!strict_free_check); |
| 428 | 145 #endif |
| 146 printf("Freeing unmalloc'ed memory at %p\n", ptr); | |
| 147 __free_hook = check_free; | |
| 148 __malloc_hook = check_malloc; | |
| 149 goto end; | |
| 150 } | |
| 151 | |
| 152 if (size < 0) | |
| 153 { | |
| 154 /* This happens when you free twice */ | |
| 155 #if !defined(__linux__) | |
| 156 /* See above comment. */ | |
|
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Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
3988
diff
changeset
|
157 assert (!strict_free_check); |
| 428 | 158 #endif |
| 159 printf("Freeing %p twice\n", ptr); | |
| 160 __free_hook = check_free; | |
| 161 __malloc_hook = check_malloc; | |
| 162 goto end; | |
| 163 } | |
| 164 | |
| 165 puthash (ptr, (void *)-size, pointer_table); | |
| 166 #ifdef UNMAPPED_FREE | |
| 167 /* Round up size to an even number of pages. */ | |
| 168 rounded_up_size = ROUND_UP_TO_PAGE (size); | |
| 169 /* Protect the pages freed from all access */ | |
| 170 if (strict_free_check) | |
| 171 mprotect (ptr, rounded_up_size, PROT_NONE); | |
| 172 #else | |
| 173 /* Set every word in the block to 0xdeadbeef */ | |
| 174 if (strict_free_check) | |
| 175 { | |
| 176 unsigned long long_length = (size + (sizeof (long) - 1)) | |
| 177 / sizeof (long); | |
| 178 unsigned long i; | |
| 179 | |
| 3988 | 180 /* Not using the DEADBEEF_CONSTANT #define, since we don't know |
| 181 * that allocation sizes will be multiples of eight. */ | |
| 428 | 182 for (i = 0; i < long_length; i++) |
| 183 ((unsigned long *) ptr)[i] = 0xdeadbeef; | |
| 184 } | |
| 185 #endif | |
| 186 free_queue[current_free].address = ptr; | |
| 187 free_queue[current_free].length = size; | |
| 188 | |
| 189 current_free++; | |
| 190 if (current_free >= FREE_QUEUE_LIMIT) | |
| 191 current_free = 0; | |
| 192 /* Really free this if there's something there */ | |
| 193 { | |
| 194 void *old = free_queue[current_free].address; | |
| 195 | |
| 196 if (old) | |
| 197 { | |
| 198 #ifdef UNMAPPED_FREE | |
| 199 unsigned long old_len = free_queue[current_free].length; | |
| 200 | |
| 201 mprotect (old, old_len, PROT_READ | PROT_WRITE | PROT_EXEC); | |
| 202 #endif | |
| 203 free (old); | |
| 204 remhash (old, pointer_table); | |
| 205 } | |
| 206 } | |
| 207 } | |
| 208 __free_hook = check_free; | |
| 209 __malloc_hook = check_malloc; | |
| 210 | |
| 211 end: | |
| 212 return; | |
| 213 } | |
| 214 | |
| 215 static void * | |
| 216 check_malloc (size_t size) | |
| 217 { | |
| 218 size_t rounded_up_size; | |
| 219 void *result; | |
| 220 | |
| 221 __free_hook = 0; | |
| 222 __malloc_hook = 0; | |
| 223 if (size == 0) | |
| 224 { | |
| 225 result = 0; | |
| 226 goto end; | |
| 227 } | |
| 228 #ifdef UNMAPPED_FREE | |
| 229 /* Round up to an even number of pages. */ | |
| 230 rounded_up_size = ROUND_UP_TO_PAGE (size); | |
| 231 #else | |
| 232 rounded_up_size = size; | |
| 233 #endif | |
| 234 result = malloc (rounded_up_size); | |
| 235 if (!pointer_table) | |
| 236 pointer_table = make_hash_table (FREE_QUEUE_LIMIT * 2); | |
| 237 puthash (result, (void *)size, pointer_table); | |
| 238 __free_hook = check_free; | |
| 239 __malloc_hook = check_malloc; | |
| 240 end: | |
| 241 return result; | |
| 242 } | |
| 243 | |
| 244 extern void *(*__realloc_hook) (void *, size_t); | |
| 245 | |
| 246 #ifdef MIN | |
| 247 #undef MIN | |
| 248 #endif | |
| 249 #define MIN(A, B) ((A) < (B) ? (A) : (B)) | |
| 250 | |
| 251 /* Don't optimize realloc */ | |
| 252 | |
| 253 static void * | |
| 254 check_realloc (void * ptr, size_t size) | |
| 255 { | |
| 256 EMACS_INT present; | |
| 257 size_t old_size; | |
| 258 void *result = malloc (size); | |
| 259 | |
| 260 if (!ptr) return result; | |
| 442 | 261 present = (EMACS_INT) gethash (ptr, pointer_table, (const void **) &old_size); |
| 428 | 262 if (!present) |
| 263 { | |
| 264 /* This can only happen by reallocing a pointer that didn't | |
| 265 come from malloc. */ | |
| 266 #if !defined(__linux__) | |
| 267 /* see comment in check_free(). */ | |
| 2500 | 268 ABORT (); |
| 428 | 269 #endif |
| 270 printf("Realloc'ing unmalloc'ed pointer at %p\n", ptr); | |
| 271 } | |
| 272 | |
| 273 if (result == 0) | |
| 274 goto end; | |
| 275 memcpy (result, ptr, MIN (size, old_size)); | |
| 276 free (ptr); | |
| 277 end: | |
| 278 return result; | |
| 279 } | |
| 280 | |
| 281 void enable_strict_free_check (void); | |
| 282 void | |
| 283 enable_strict_free_check (void) | |
| 284 { | |
| 285 strict_free_check = 1; | |
| 286 } | |
| 287 | |
| 288 void disable_strict_free_check (void); | |
| 289 void | |
| 290 disable_strict_free_check (void) | |
| 291 { | |
| 292 strict_free_check = 0; | |
| 293 } | |
| 294 | |
| 295 /* Note: All BLOCK_INPUT stuff removed from this file because it's | |
| 296 completely gone in XEmacs */ | |
| 297 | |
| 298 static void * | |
| 299 block_input_malloc (size_t size); | |
| 300 | |
| 301 static void | |
| 302 block_input_free (void* ptr) | |
| 303 { | |
| 304 __free_hook = 0; | |
| 305 __malloc_hook = 0; | |
| 306 free (ptr); | |
| 307 __free_hook = block_input_free; | |
| 308 __malloc_hook = block_input_malloc; | |
| 309 } | |
| 310 | |
| 311 static void * | |
| 312 block_input_malloc (size_t size) | |
| 313 { | |
| 314 void* result; | |
| 315 __free_hook = 0; | |
| 316 __malloc_hook = 0; | |
| 317 result = malloc (size); | |
| 318 __free_hook = block_input_free; | |
| 319 __malloc_hook = block_input_malloc; | |
| 320 return result; | |
| 321 } | |
| 322 | |
| 323 | |
| 324 static void * | |
| 325 block_input_realloc (void* ptr, size_t size) | |
| 326 { | |
| 327 void* result; | |
| 328 __free_hook = 0; | |
| 329 __malloc_hook = 0; | |
| 330 __realloc_hook = 0; | |
| 331 result = realloc (ptr, size); | |
| 332 __free_hook = block_input_free; | |
| 333 __malloc_hook = block_input_malloc; | |
| 334 __realloc_hook = block_input_realloc; | |
| 335 return result; | |
| 336 } | |
| 337 | |
| 338 #ifdef emacs | |
| 339 | |
| 340 void disable_free_hook (void); | |
| 341 void | |
| 342 disable_free_hook (void) | |
| 343 { | |
| 344 __free_hook = block_input_free; | |
| 345 __malloc_hook = block_input_malloc; | |
| 346 __realloc_hook = block_input_realloc; | |
| 347 } | |
| 348 | |
| 349 void | |
| 350 init_free_hook (void) | |
| 351 { | |
| 352 __free_hook = check_free; | |
| 353 __malloc_hook = check_malloc; | |
| 354 __realloc_hook = check_realloc; | |
| 355 current_free = 0; | |
| 356 strict_free_check = 1; | |
| 357 } | |
| 358 | |
| 359 void really_free_one_entry (void *, int, int *); | |
| 360 | |
| 361 DEFUN ("really-free", Freally_free, 0, 1, "P", /* | |
| 362 Actually free the storage held by the free() debug hook. | |
| 363 A no-op if the free hook is disabled. | |
| 364 */ | |
| 2286 | 365 (UNUSED (arg))) |
| 428 | 366 { |
| 367 int count[2]; | |
| 368 Lisp_Object lisp_count[2]; | |
| 369 | |
| 370 if ((__free_hook != 0) && pointer_table) | |
| 371 { | |
| 372 count[0] = 0; | |
| 373 count[1] = 0; | |
| 374 __free_hook = 0; | |
| 375 maphash ((maphash_function)really_free_one_entry, | |
| 376 pointer_table, (void *)&count); | |
| 377 memset (free_queue, 0, sizeof (free_queue_entry) * FREE_QUEUE_LIMIT); | |
| 378 current_free = 0; | |
| 379 __free_hook = check_free; | |
| 793 | 380 lisp_count[0] = make_int (count[0]); |
| 381 lisp_count[1] = make_int (count[1]); | |
| 428 | 382 return Fcons (lisp_count[0], lisp_count[1]); |
| 383 } | |
| 384 else | |
| 385 return Fcons (make_int (0), make_int (0)); | |
| 386 } | |
| 387 | |
| 388 void | |
| 389 really_free_one_entry (void *key, int contents, int *countp) | |
| 390 { | |
| 391 if (contents < 0) | |
| 392 { | |
| 393 free (key); | |
| 394 #ifdef UNMAPPED_FREE | |
| 395 mprotect (key, -contents, PROT_READ | PROT_WRITE | PROT_EXEC); | |
| 396 #endif | |
| 397 remhash (key, pointer_table); | |
| 398 countp[0]++; | |
| 399 countp[1] += -contents; | |
| 400 } | |
| 401 } | |
| 402 | |
| 403 void | |
| 404 syms_of_free_hook (void) | |
| 405 { | |
| 406 DEFSUBR (Freally_free); | |
| 407 } | |
| 408 | |
| 409 #else | |
| 410 void (*__free_hook)(void *) = check_free; | |
| 411 void *(*__malloc_hook)(size_t) = check_malloc; | |
| 412 void *(*__realloc_hook)(void *, size_t) = check_realloc; | |
| 413 #endif | |
| 414 | |
| 415 #endif /* !defined(HAVE_LIBMCHECK) */ | |
| 416 | |
| 417 #if defined(DEBUG_INPUT_BLOCKING) || defined (DEBUG_GCPRO) | |
| 418 | |
| 419 /* Note: There is no more input blocking in XEmacs */ | |
| 420 typedef enum { | |
| 421 block_type, unblock_type, totally_type, | |
| 422 gcpro1_type, gcpro2_type, gcpro3_type, gcpro4_type, gcpro5_type, | |
| 423 ungcpro_type | |
| 424 } blocktype; | |
| 425 | |
| 426 struct block_input_history_struct | |
| 427 { | |
| 428 char *file; | |
| 429 int line; | |
| 430 blocktype type; | |
| 431 int value; | |
| 432 }; | |
| 433 | |
| 434 typedef struct block_input_history_struct block_input_history; | |
| 435 | |
| 436 #endif /* DEBUG_INPUT_BLOCKING || DEBUG_GCPRO */ | |
| 437 | |
| 438 #ifdef DEBUG_INPUT_BLOCKING | |
| 439 | |
| 440 int blhistptr; | |
| 441 | |
| 442 #define BLHISTLIMIT 1000 | |
| 443 | |
| 444 block_input_history blhist[BLHISTLIMIT]; | |
| 445 | |
| 446 note_block_input (char *file, int line) | |
| 447 { | |
| 448 note_block (file, line, block_type); | |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
3988
diff
changeset
|
449 assert (interrupt_input_blocked <= 2); |
| 428 | 450 } |
| 451 | |
| 452 note_unblock_input (char* file, int line) | |
| 453 { | |
| 454 note_block (file, line, unblock_type); | |
| 455 } | |
| 456 | |
| 457 note_totally_unblocked (char* file, int line) | |
| 458 { | |
| 459 note_block (file, line, totally_type); | |
| 460 } | |
| 461 | |
| 462 note_block (char *file, int line, blocktype type) | |
| 463 { | |
| 464 blhist[blhistptr].file = file; | |
| 465 blhist[blhistptr].line = line; | |
| 466 blhist[blhistptr].type = type; | |
| 467 blhist[blhistptr].value = interrupt_input_blocked; | |
| 468 | |
| 469 blhistptr++; | |
| 470 if (blhistptr >= BLHISTLIMIT) | |
| 471 blhistptr = 0; | |
| 472 } | |
| 473 | |
| 474 #endif /* DEBUG_INPUT_BLOCKING */ | |
| 475 | |
| 476 | |
| 477 #ifdef DEBUG_GCPRO | |
| 478 | |
| 479 int gcprohistptr; | |
| 480 #define GCPROHISTLIMIT 1000 | |
| 481 block_input_history gcprohist[GCPROHISTLIMIT]; | |
| 482 | |
| 483 static void | |
| 484 log_gcpro (char *file, int line, struct gcpro *value, blocktype type) | |
| 485 { | |
| 486 if (type == ungcpro_type) | |
| 487 { | |
| 488 if (value == gcprolist) goto OK; | |
|
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6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
3988
diff
changeset
|
489 assert (gcprolist); |
| 428 | 490 if (value == gcprolist->next) goto OK; |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
3988
diff
changeset
|
491 assert (gcprolist->next); |
| 428 | 492 if (value == gcprolist->next->next) goto OK; |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
3988
diff
changeset
|
493 assert (gcprolist->next->next); |
| 428 | 494 if (value == gcprolist->next->next->next) goto OK; |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
3988
diff
changeset
|
495 assert (gcprolist->next->next->next); |
| 446 | 496 if (value == gcprolist->next->next->next->next) goto OK; |
| 2500 | 497 ABORT (); |
| 428 | 498 OK:; |
| 499 } | |
| 500 gcprohist[gcprohistptr].file = file; | |
| 501 gcprohist[gcprohistptr].line = line; | |
| 502 gcprohist[gcprohistptr].type = type; | |
| 503 gcprohist[gcprohistptr].value = (int) value; | |
| 504 gcprohistptr++; | |
| 505 if (gcprohistptr >= GCPROHISTLIMIT) | |
| 506 gcprohistptr = 0; | |
| 507 } | |
| 508 | |
| 509 void | |
| 510 debug_gcpro1 (char *file, int line, struct gcpro *gcpro1, Lisp_Object *var) | |
| 511 { | |
| 512 gcpro1->next = gcprolist; gcpro1->var = var; gcpro1->nvars = 1; | |
| 513 gcprolist = gcpro1; | |
| 514 log_gcpro (file, line, gcpro1, gcpro1_type); | |
| 515 } | |
| 516 | |
| 517 void | |
| 518 debug_gcpro2 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2, | |
| 519 Lisp_Object *var1, Lisp_Object *var2) | |
| 520 { | |
| 521 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1; | |
| 522 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1; | |
| 523 gcprolist = gcpro2; | |
| 524 log_gcpro (file, line, gcpro2, gcpro2_type); | |
| 525 } | |
| 526 | |
| 527 void | |
| 528 debug_gcpro3 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2, | |
| 529 struct gcpro *gcpro3, Lisp_Object *var1, Lisp_Object *var2, | |
| 530 Lisp_Object *var3) | |
| 531 { | |
| 532 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1; | |
| 533 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1; | |
| 534 gcpro3->next = gcpro2; gcpro3->var = var3; gcpro3->nvars = 1; | |
| 535 gcprolist = gcpro3; | |
| 536 log_gcpro (file, line, gcpro3, gcpro3_type); | |
| 537 } | |
| 538 | |
| 539 void | |
| 540 debug_gcpro4 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2, | |
| 541 struct gcpro *gcpro3, struct gcpro *gcpro4, Lisp_Object *var1, | |
| 542 Lisp_Object *var2, Lisp_Object *var3, Lisp_Object *var4) | |
| 543 { | |
| 544 log_gcpro (file, line, gcpro4, gcpro4_type); | |
| 545 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1; | |
| 546 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1; | |
| 547 gcpro3->next = gcpro2; gcpro3->var = var3; gcpro3->nvars = 1; | |
| 548 gcpro4->next = gcpro3; gcpro4->var = var4; gcpro4->nvars = 1; | |
| 549 gcprolist = gcpro4; | |
| 550 } | |
| 551 | |
| 552 void | |
| 553 debug_gcpro5 (char *file, int line, struct gcpro *gcpro1, struct gcpro *gcpro2, | |
| 554 struct gcpro *gcpro3, struct gcpro *gcpro4, struct gcpro *gcpro5, | |
| 555 Lisp_Object *var1, Lisp_Object *var2, Lisp_Object *var3, | |
| 556 Lisp_Object *var4, Lisp_Object *var5) | |
| 557 { | |
| 558 log_gcpro (file, line, gcpro5, gcpro5_type); | |
| 559 gcpro1->next = gcprolist; gcpro1->var = var1; gcpro1->nvars = 1; | |
| 560 gcpro2->next = gcpro1; gcpro2->var = var2; gcpro2->nvars = 1; | |
| 561 gcpro3->next = gcpro2; gcpro3->var = var3; gcpro3->nvars = 1; | |
| 562 gcpro4->next = gcpro3; gcpro4->var = var4; gcpro4->nvars = 1; | |
| 563 gcpro5->next = gcpro4; gcpro5->var = var5; gcpro5->nvars = 1; | |
| 564 gcprolist = gcpro5; | |
| 565 } | |
| 566 | |
| 567 void | |
| 568 debug_ungcpro (char *file, int line, struct gcpro *gcpro1) | |
| 569 { | |
| 570 log_gcpro (file, line, gcpro1, ungcpro_type); | |
| 571 gcprolist = gcpro1->next; | |
| 572 } | |
| 573 | |
| 574 | |
| 575 /* To be called from the debugger */ | |
| 576 void show_gcprohist (void); | |
| 577 void | |
| 578 show_gcprohist (void) | |
| 579 { | |
| 580 int i, j; | |
| 581 for (i = 0, j = gcprohistptr; | |
| 582 i < GCPROHISTLIMIT; | |
| 583 i++, j++) | |
| 584 { | |
| 585 if (j >= GCPROHISTLIMIT) | |
| 586 j = 0; | |
| 587 printf ("%3d %s %d %s 0x%x\n", | |
| 588 j, gcprohist[j].file, gcprohist[j].line, | |
| 589 (gcprohist[j].type == gcpro1_type ? "GCPRO1" : | |
| 590 gcprohist[j].type == gcpro2_type ? "GCPRO2" : | |
| 591 gcprohist[j].type == gcpro3_type ? "GCPRO3" : | |
| 592 gcprohist[j].type == gcpro4_type ? "GCPRO4" : | |
| 446 | 593 gcprohist[j].type == gcpro5_type ? "GCPRO5" : |
| 428 | 594 gcprohist[j].type == ungcpro_type ? "UNGCPRO" : "???"), |
| 595 gcprohist[j].value); | |
| 596 } | |
| 597 fflush (stdout); | |
| 598 } | |
| 599 | |
| 600 #endif /* DEBUG_GCPRO */ |