boehm-gc/dbg_mlc.c

   1 /*
   2  * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
   3  * Copyright (c) 1991-1995 by Xerox Corporation.  All rights reserved.
   4  * Copyright (c) 1997 by Silicon Graphics.  All rights reserved.
   5  *
   6  * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
   7  * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
   8  *
   9  * Permission is hereby granted to use or copy this program
  10  * for any purpose,  provided the above notices are retained on all copies.
  11  * Permission to modify the code and to distribute modified code is granted,
  12  * provided the above notices are retained, and a notice that the code was
  13  * modified is included with the above copyright notice.
  14  */
  15 /* Boehm, October 9, 1995 1:16 pm PDT */
  16 # include "gc_priv.h"
  17
  18 /* Do we want to and know how to save the call stack at the time of     */
  19 /* an allocation?  How much space do we want to use in each object?     */
  20
  21 # define START_FLAG ((word)0xfedcedcb)
  22 # define END_FLAG ((word)0xbcdecdef)
  23         /* Stored both one past the end of user object, and one before  */
  24         /* the end of the object as seen by the allocator.              */
  25
  26
  27 /* Object header */
  28 typedef struct {
  29     char * oh_string;           /* object descriptor string     */
  30     word oh_int;                /* object descriptor integers   */
  31 #   ifdef NEED_CALLINFO
  32       struct callinfo oh_ci[NFRAMES];
  33 #   endif
  34     word oh_sz;                 /* Original malloc arg.         */
  35     word oh_sf;                 /* start flag */
  36 } oh;
  37 /* The size of the above structure is assumed not to dealign things,    */
  38 /* and to be a multiple of the word length.                             */
  39
  40 #define DEBUG_BYTES (sizeof (oh) + sizeof (word))
  41 #undef ROUNDED_UP_WORDS
  42 #define ROUNDED_UP_WORDS(n) BYTES_TO_WORDS((n) + WORDS_TO_BYTES(1) - 1)
  43
  44
  45 #ifdef SAVE_CALL_CHAIN
  46 #   define ADD_CALL_CHAIN(base, ra) GC_save_callers(((oh *)(base)) -> oh_ci)
  47 #   define PRINT_CALL_CHAIN(base) GC_print_callers(((oh *)(base)) -> oh_ci)
  48 #else
  49 # ifdef GC_ADD_CALLER
  50 #   define ADD_CALL_CHAIN(base, ra) ((oh *)(base)) -> oh_ci[0].ci_pc = (ra)
  51 #   define PRINT_CALL_CHAIN(base) GC_print_callers(((oh *)(base)) -> oh_ci)
  52 # else
  53 #   define ADD_CALL_CHAIN(base, ra)
  54 #   define PRINT_CALL_CHAIN(base)
  55 # endif
  56 #endif
  57
  58 /* Check whether object with base pointer p has debugging info  */
  59 /* p is assumed to point to a legitimate object in our part     */
  60 /* of the heap.                                                 */
  61 GC_bool GC_has_debug_info(p)
  62 ptr_t p;
  63 {
  64     register oh * ohdr = (oh *)p;
  65     register ptr_t body = (ptr_t)(ohdr + 1);
  66     register word sz = GC_size((ptr_t) ohdr);
  67
  68     if (HBLKPTR((ptr_t)ohdr) != HBLKPTR((ptr_t)body)
  69         || sz < sizeof (oh)) {
  70         return(FALSE);
  71     }
  72     if (ohdr -> oh_sz == sz) {
  73         /* Object may have had debug info, but has been deallocated     */
  74         return(FALSE);
  75     }
  76     if (ohdr -> oh_sf == (START_FLAG ^ (word)body)) return(TRUE);
  77     if (((word *)ohdr)[BYTES_TO_WORDS(sz)-1] == (END_FLAG ^ (word)body)) {
  78         return(TRUE);
  79     }
  80     return(FALSE);
  81 }
  82
  83 /* Return start of object that might have debugging info.  */
  84 ptr_t GC_debug_object_start(p)
  85 ptr_t p;
  86 {
  87     register word * result = (word *)((oh *)p + 1);
  88     if (! GC_has_debug_info(p))
  89         return(p);
  90     return((ptr_t)result);
  91 }
  92
  93 /* Store debugging info into p.  Return displaced pointer. */
  94 /* Assumes we don't hold allocation lock.                  */
  95 ptr_t GC_store_debug_info(p, sz, string, integer)
  96 register ptr_t p;       /* base pointer */
  97 word sz;        /* bytes */
  98 char * string;
  99 word integer;
 100 {
 101     register word * result = (word *)((oh *)p + 1);
 102     DCL_LOCK_STATE;
 103
 104     /* There is some argument that we should dissble signals here.      */
 105     /* But that's expensive.  And this way things should only appear    */
 106     /* inconsistent while we're in the handler.                         */
 107     LOCK();
 108     ((oh *)p) -> oh_string = string;
 109     ((oh *)p) -> oh_int = integer;
 110     ((oh *)p) -> oh_sz = sz;
 111     ((oh *)p) -> oh_sf = START_FLAG ^ (word)result;
 112     ((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] =
 113          result[ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result;
 114     UNLOCK();
 115     return((ptr_t)result);
 116 }
 117
 118 /* Check the object with debugging info at p            */
 119 /* return NIL if it's OK.  Else return clobbered        */
 120 /* address.                                             */
 121 ptr_t GC_check_annotated_obj(ohdr)
 122 register oh * ohdr;
 123 {
 124     register ptr_t body = (ptr_t)(ohdr + 1);
 125     register word gc_sz = GC_size((ptr_t)ohdr);
 126     if (ohdr -> oh_sz + DEBUG_BYTES > gc_sz) {
 127         return((ptr_t)(&(ohdr -> oh_sz)));
 128     }
 129     if (ohdr -> oh_sf != (START_FLAG ^ (word)body)) {
 130         return((ptr_t)(&(ohdr -> oh_sf)));
 131     }
 132     if (((word *)ohdr)[BYTES_TO_WORDS(gc_sz)-1] != (END_FLAG ^ (word)body)) {
 133         return((ptr_t)((word *)ohdr + BYTES_TO_WORDS(gc_sz)-1));
 134     }
 135     if (((word *)body)[ROUNDED_UP_WORDS(ohdr -> oh_sz)]
 136         != (END_FLAG ^ (word)body)) {
 137         return((ptr_t)((word *)body + ROUNDED_UP_WORDS(ohdr -> oh_sz)));
 138     }
 139     return(0);
 140 }
 141
 142 void GC_print_obj(p)
 143 ptr_t p;
 144 {
 145     register oh * ohdr = (oh *)GC_base(p);
 146
 147     GC_err_printf1("0x%lx (", (unsigned long)ohdr + sizeof(oh));
 148     GC_err_puts(ohdr -> oh_string);
 149     GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int),
 150                                       (unsigned long)(ohdr -> oh_sz));
 151     PRINT_CALL_CHAIN(ohdr);
 152 }
 153
 154 void GC_debug_print_heap_obj_proc(p)
 155 ptr_t p;
 156 {
 157     if (GC_has_debug_info(p)) {
 158         GC_print_obj(p);
 159     } else {
 160         GC_default_print_heap_obj_proc(p);
 161     }
 162 }
 163
 164 void GC_print_smashed_obj(p, clobbered_addr)
 165 ptr_t p, clobbered_addr;
 166 {
 167     register oh * ohdr = (oh *)GC_base(p);
 168
 169     GC_err_printf2("0x%lx in object at 0x%lx(", (unsigned long)clobbered_addr,
 170                                                 (unsigned long)p);
 171     if (clobbered_addr <= (ptr_t)(&(ohdr -> oh_sz))
 172         || ohdr -> oh_string == 0) {
 173         GC_err_printf1("<smashed>, appr. sz = %ld)\n",
 174                        GC_size((ptr_t)ohdr) - DEBUG_BYTES);
 175     } else {
 176         if (ohdr -> oh_string[0] == '\0') {
 177             GC_err_puts("EMPTY(smashed?)");
 178         } else {
 179             GC_err_puts(ohdr -> oh_string);
 180         }
 181         GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int),
 182                                           (unsigned long)(ohdr -> oh_sz));
 183         PRINT_CALL_CHAIN(ohdr);
 184     }
 185 }
 186
 187 void GC_check_heap_proc();
 188
 189 void GC_start_debugging()
 190 {
 191     GC_check_heap = GC_check_heap_proc;
 192     GC_print_heap_obj = GC_debug_print_heap_obj_proc;
 193     GC_debugging_started = TRUE;
 194     GC_register_displacement((word)sizeof(oh));
 195 }
 196
 197 # if defined(__STDC__) || defined(__cplusplus)
 198     void GC_debug_register_displacement(GC_word offset)
 199 # else
 200     void GC_debug_register_displacement(offset)
 201     GC_word offset;
 202 # endif
 203 {
 204     GC_register_displacement(offset);
 205     GC_register_displacement((word)sizeof(oh) + offset);
 206 }
 207
 208 # ifdef GC_ADD_CALLER
 209 #   define EXTRA_ARGS word ra, char * s, int i
 210 #   define OPT_RA ra,
 211 # else
 212 #   define EXTRA_ARGS char * s, int i
 213 #   define OPT_RA
 214 # endif
 215
 216 # ifdef __STDC__
 217     GC_PTR GC_debug_malloc(size_t lb, EXTRA_ARGS)
 218 # else
 219     GC_PTR GC_debug_malloc(lb, s, i)
 220     size_t lb;
 221     char * s;
 222     int i;
 223 #   ifdef GC_ADD_CALLER
 224         --> GC_ADD_CALLER not implemented for K&R C
 225 #   endif
 226 # endif
 227 {
 228     GC_PTR result = GC_malloc(lb + DEBUG_BYTES);
 229
 230     if (result == 0) {
 231         GC_err_printf1("GC_debug_malloc(%ld) returning NIL (",
 232                        (unsigned long) lb);
 233         GC_err_puts(s);
 234         GC_err_printf1(":%ld)\n", (unsigned long)i);
 235         return(0);
 236     }
 237     if (!GC_debugging_started) {
 238         GC_start_debugging();
 239     }
 240     ADD_CALL_CHAIN(result, ra);
 241     return (GC_store_debug_info(result, (word)lb, s, (word)i));
 242 }
 243
 244 # ifdef __STDC__
 245     GC_PTR GC_debug_generic_malloc(size_t lb, int k, EXTRA_ARGS)
 246 # else
 247     GC_PTR GC_debug_malloc(lb, k, s, i)
 248     size_t lb;
 249     int k;
 250     char * s;
 251     int i;
 252 #   ifdef GC_ADD_CALLER
 253         --> GC_ADD_CALLER not implemented for K&R C
 254 #   endif
 255 # endif
 256 {
 257     GC_PTR result = GC_generic_malloc(lb + DEBUG_BYTES, k);
 258
 259     if (result == 0) {
 260         GC_err_printf1("GC_debug_malloc(%ld) returning NIL (",
 261                        (unsigned long) lb);
 262         GC_err_puts(s);
 263         GC_err_printf1(":%ld)\n", (unsigned long)i);
 264         return(0);
 265     }
 266     if (!GC_debugging_started) {
 267         GC_start_debugging();
 268     }
 269     ADD_CALL_CHAIN(result, ra);
 270     return (GC_store_debug_info(result, (word)lb, s, (word)i));
 271 }
 272
 273 #ifdef STUBBORN_ALLOC
 274 # ifdef __STDC__
 275     GC_PTR GC_debug_malloc_stubborn(size_t lb, EXTRA_ARGS)
 276 # else
 277     GC_PTR GC_debug_malloc_stubborn(lb, s, i)
 278     size_t lb;
 279     char * s;
 280     int i;
 281 # endif
 282 {
 283     GC_PTR result = GC_malloc_stubborn(lb + DEBUG_BYTES);
 284
 285     if (result == 0) {
 286         GC_err_printf1("GC_debug_malloc(%ld) returning NIL (",
 287                        (unsigned long) lb);
 288         GC_err_puts(s);
 289         GC_err_printf1(":%ld)\n", (unsigned long)i);
 290         return(0);
 291     }
 292     if (!GC_debugging_started) {
 293         GC_start_debugging();
 294     }
 295     ADD_CALL_CHAIN(result, ra);
 296     return (GC_store_debug_info(result, (word)lb, s, (word)i));
 297 }
 298
 299 void GC_debug_change_stubborn(p)
 300 GC_PTR p;
 301 {
 302     register GC_PTR q = GC_base(p);
 303     register hdr * hhdr;
 304
 305     if (q == 0) {
 306         GC_err_printf1("Bad argument: 0x%lx to GC_debug_change_stubborn\n",
 307                        (unsigned long) p);
 308         ABORT("GC_debug_change_stubborn: bad arg");
 309     }
 310     hhdr = HDR(q);
 311     if (hhdr -> hb_obj_kind != STUBBORN) {
 312         GC_err_printf1("GC_debug_change_stubborn arg not stubborn: 0x%lx\n",
 313                        (unsigned long) p);
 314         ABORT("GC_debug_change_stubborn: arg not stubborn");
 315     }
 316     GC_change_stubborn(q);
 317 }
 318
 319 void GC_debug_end_stubborn_change(p)
 320 GC_PTR p;
 321 {
 322     register GC_PTR q = GC_base(p);
 323     register hdr * hhdr;
 324
 325     if (q == 0) {
 326         GC_err_printf1("Bad argument: 0x%lx to GC_debug_end_stubborn_change\n",
 327                        (unsigned long) p);
 328         ABORT("GC_debug_end_stubborn_change: bad arg");
 329     }
 330     hhdr = HDR(q);
 331     if (hhdr -> hb_obj_kind != STUBBORN) {
 332         GC_err_printf1("debug_end_stubborn_change arg not stubborn: 0x%lx\n",
 333                        (unsigned long) p);
 334         ABORT("GC_debug_end_stubborn_change: arg not stubborn");
 335     }
 336     GC_end_stubborn_change(q);
 337 }
 338
 339 #endif /* STUBBORN_ALLOC */
 340
 341 # ifdef __STDC__
 342     GC_PTR GC_debug_malloc_atomic(size_t lb, EXTRA_ARGS)
 343 # else
 344     GC_PTR GC_debug_malloc_atomic(lb, s, i)
 345     size_t lb;
 346     char * s;
 347     int i;
 348 # endif
 349 {
 350     GC_PTR result = GC_malloc_atomic(lb + DEBUG_BYTES);
 351
 352     if (result == 0) {
 353         GC_err_printf1("GC_debug_malloc_atomic(%ld) returning NIL (",
 354                       (unsigned long) lb);
 355         GC_err_puts(s);
 356         GC_err_printf1(":%ld)\n", (unsigned long)i);
 357         return(0);
 358     }
 359     if (!GC_debugging_started) {
 360         GC_start_debugging();
 361     }
 362     ADD_CALL_CHAIN(result, ra);
 363     return (GC_store_debug_info(result, (word)lb, s, (word)i));
 364 }
 365
 366 # ifdef __STDC__
 367     GC_PTR GC_debug_malloc_uncollectable(size_t lb, EXTRA_ARGS)
 368 # else
 369     GC_PTR GC_debug_malloc_uncollectable(lb, s, i)
 370     size_t lb;
 371     char * s;
 372     int i;
 373 # endif
 374 {
 375     GC_PTR result = GC_malloc_uncollectable(lb + DEBUG_BYTES);
 376
 377     if (result == 0) {
 378         GC_err_printf1("GC_debug_malloc_uncollectable(%ld) returning NIL (",
 379                       (unsigned long) lb);
 380         GC_err_puts(s);
 381         GC_err_printf1(":%ld)\n", (unsigned long)i);
 382         return(0);
 383     }
 384     if (!GC_debugging_started) {
 385         GC_start_debugging();
 386     }
 387     ADD_CALL_CHAIN(result, ra);
 388     return (GC_store_debug_info(result, (word)lb, s, (word)i));
 389 }
 390
 391 #ifdef ATOMIC_UNCOLLECTABLE
 392 # ifdef __STDC__
 393     GC_PTR GC_debug_malloc_atomic_uncollectable(size_t lb, EXTRA_ARGS)
 394 # else
 395     GC_PTR GC_debug_malloc_atomic_uncollectable(lb, s, i)
 396     size_t lb;
 397     char * s;
 398     int i;
 399 # endif
 400 {
 401     GC_PTR result = GC_malloc_atomic_uncollectable(lb + DEBUG_BYTES);
 402
 403     if (result == 0) {
 404         GC_err_printf1(
 405                 "GC_debug_malloc_atomic_uncollectable(%ld) returning NIL (",
 406                 (unsigned long) lb);
 407         GC_err_puts(s);
 408         GC_err_printf1(":%ld)\n", (unsigned long)i);
 409         return(0);
 410     }
 411     if (!GC_debugging_started) {
 412         GC_start_debugging();
 413     }
 414     ADD_CALL_CHAIN(result, ra);
 415     return (GC_store_debug_info(result, (word)lb, s, (word)i));
 416 }
 417 #endif /* ATOMIC_UNCOLLECTABLE */
 418
 419 # ifdef __STDC__
 420     void GC_debug_free(GC_PTR p)
 421 # else
 422     void GC_debug_free(p)
 423     GC_PTR p;
 424 # endif
 425 {
 426     register GC_PTR base = GC_base(p);
 427     register ptr_t clobbered;
 428
 429     if (base == 0) {
 430         GC_err_printf1("Attempt to free invalid pointer %lx\n",
 431                        (unsigned long)p);
 432         if (p != 0) ABORT("free(invalid pointer)");
 433     }
 434     if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
 435         GC_err_printf1(
 436                   "GC_debug_free called on pointer %lx wo debugging info\n",
 437                   (unsigned long)p);
 438     } else {
 439       clobbered = GC_check_annotated_obj((oh *)base);
 440       if (clobbered != 0) {
 441         if (((oh *)base) -> oh_sz == GC_size(base)) {
 442             GC_err_printf0(
 443                   "GC_debug_free: found previously deallocated (?) object at ");
 444         } else {
 445             GC_err_printf0("GC_debug_free: found smashed object at ");
 446         }
 447         GC_print_smashed_obj(p, clobbered);
 448       }
 449       /* Invalidate size */
 450       ((oh *)base) -> oh_sz = GC_size(base);
 451     }
 452 #   ifdef FIND_LEAK
 453         GC_free(base);
 454 #   else
 455         {
 456             register hdr * hhdr = HDR(p);
 457             GC_bool uncollectable = FALSE;
 458
 459             if (hhdr ->  hb_obj_kind == UNCOLLECTABLE) {
 460                 uncollectable = TRUE;
 461             }
 462 #           ifdef ATOMIC_UNCOLLECTABLE
 463                 if (hhdr ->  hb_obj_kind == AUNCOLLECTABLE) {
 464                     uncollectable = TRUE;
 465                 }
 466 #           endif
 467             if (uncollectable) GC_free(base);
 468         }
 469 #   endif
 470 }
 471
 472 # ifdef __STDC__
 473     GC_PTR GC_debug_realloc(GC_PTR p, size_t lb, EXTRA_ARGS)
 474 # else
 475     GC_PTR GC_debug_realloc(p, lb, s, i)
 476     GC_PTR p;
 477     size_t lb;
 478     char *s;
 479     int i;
 480 # endif
 481 {
 482     register GC_PTR base = GC_base(p);
 483     register ptr_t clobbered;
 484     register GC_PTR result;
 485     register size_t copy_sz = lb;
 486     register size_t old_sz;
 487     register hdr * hhdr;
 488
 489     if (p == 0) return(GC_debug_malloc(lb, OPT_RA s, i));
 490     if (base == 0) {
 491         GC_err_printf1(
 492               "Attempt to reallocate invalid pointer %lx\n", (unsigned long)p);
 493         ABORT("realloc(invalid pointer)");
 494     }
 495     if ((ptr_t)p - (ptr_t)base != sizeof(oh)) {
 496         GC_err_printf1(
 497                 "GC_debug_realloc called on pointer %lx wo debugging info\n",
 498                 (unsigned long)p);
 499         return(GC_realloc(p, lb));
 500     }
 501     hhdr = HDR(base);
 502     switch (hhdr -> hb_obj_kind) {
 503 #    ifdef STUBBORN_ALLOC
 504       case STUBBORN:
 505         result = GC_debug_malloc_stubborn(lb, OPT_RA s, i);
 506         break;
 507 #    endif
 508       case NORMAL:
 509         result = GC_debug_malloc(lb, OPT_RA s, i);
 510         break;
 511       case PTRFREE:
 512         result = GC_debug_malloc_atomic(lb, OPT_RA s, i);
 513         break;
 514       case UNCOLLECTABLE:
 515         result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i);
 516         break;
 517 #    ifdef ATOMIC_UNCOLLECTABLE
 518       case AUNCOLLECTABLE:
 519         result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i);
 520         break;
 521 #    endif
 522       default:
 523         GC_err_printf0("GC_debug_realloc: encountered bad kind\n");
 524         ABORT("bad kind");
 525     }
 526     clobbered = GC_check_annotated_obj((oh *)base);
 527     if (clobbered != 0) {
 528         GC_err_printf0("GC_debug_realloc: found smashed object at ");
 529         GC_print_smashed_obj(p, clobbered);
 530     }
 531     old_sz = ((oh *)base) -> oh_sz;
 532     if (old_sz < copy_sz) copy_sz = old_sz;
 533     if (result == 0) return(0);
 534     BCOPY(p, result,  copy_sz);
 535     GC_debug_free(p);
 536     return(result);
 537 }
 538
 539 /* Check all marked objects in the given block for validity */
 540 /*ARGSUSED*/
 541 void GC_check_heap_block(hbp, dummy)
 542 register struct hblk *hbp;      /* ptr to current heap block            */
 543 word dummy;
 544 {
 545     register struct hblkhdr * hhdr = HDR(hbp);
 546     register word sz = hhdr -> hb_sz;
 547     register int word_no;
 548     register word *p, *plim;
 549
 550     p = (word *)(hbp->hb_body);
 551     word_no = HDR_WORDS;
 552     if (sz > MAXOBJSZ) {
 553         plim = p;
 554     } else {
 555         plim = (word *)((((word)hbp) + HBLKSIZE) - WORDS_TO_BYTES(sz));
 556     }
 557     /* go through all words in block */
 558         while( p <= plim ) {
 559             if( mark_bit_from_hdr(hhdr, word_no)
 560                 && GC_has_debug_info((ptr_t)p)) {
 561                 ptr_t clobbered = GC_check_annotated_obj((oh *)p);
 562
 563                 if (clobbered != 0) {
 564                     GC_err_printf0(
 565                         "GC_check_heap_block: found smashed object at ");
 566                     GC_print_smashed_obj((ptr_t)p, clobbered);
 567                 }
 568             }
 569             word_no += sz;
 570             p += sz;
 571         }
 572 }
 573
 574
 575 /* This assumes that all accessible objects are marked, and that        */
 576 /* I hold the allocation lock.  Normally called by collector.           */
 577 void GC_check_heap_proc()
 578 {
 579 #   ifndef SMALL_CONFIG
 580         if (sizeof(oh) & (2 * sizeof(word) - 1) != 0) {
 581             ABORT("Alignment problem: object header has inappropriate size\n");
 582         }
 583 #   endif
 584     GC_apply_to_all_blocks(GC_check_heap_block, (word)0);
 585 }
 586
 587 struct closure {
 588     GC_finalization_proc cl_fn;
 589     GC_PTR cl_data;
 590 };
 591
 592 # ifdef __STDC__
 593     void * GC_make_closure(GC_finalization_proc fn, void * data)
 594 # else
 595     GC_PTR GC_make_closure(fn, data)
 596     GC_finalization_proc fn;
 597     GC_PTR data;
 598 # endif
 599 {
 600     struct closure * result =
 601                 (struct closure *) GC_malloc(sizeof (struct closure));
 602
 603     result -> cl_fn = fn;
 604     result -> cl_data = data;
 605     return((GC_PTR)result);
 606 }
 607
 608 # ifdef __STDC__
 609     void GC_debug_invoke_finalizer(void * obj, void * data)
 610 # else
 611     void GC_debug_invoke_finalizer(obj, data)
 612     char * obj;
 613     char * data;
 614 # endif
 615 {
 616     register struct closure * cl = (struct closure *) data;
 617
 618     (*(cl -> cl_fn))((GC_PTR)((char *)obj + sizeof(oh)), cl -> cl_data);
 619 }
 620
 621
 622 # ifdef __STDC__
 623     void GC_debug_register_finalizer(GC_PTR obj, GC_finalization_proc fn,
 624                                      GC_PTR cd, GC_finalization_proc *ofn,
 625                                      GC_PTR *ocd)
 626 # else
 627     void GC_debug_register_finalizer(obj, fn, cd, ofn, ocd)
 628     GC_PTR obj;
 629     GC_finalization_proc fn;
 630     GC_PTR cd;
 631     GC_finalization_proc *ofn;
 632     GC_PTR *ocd;
 633 # endif
 634 {
 635     ptr_t base = GC_base(obj);
 636     if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
 637         GC_err_printf1(
 638             "GC_register_finalizer called with non-base-pointer 0x%lx\n",
 639             obj);
 640     }
 641     GC_register_finalizer(base, GC_debug_invoke_finalizer,
 642                           GC_make_closure(fn,cd), ofn, ocd);
 643 }
 644
 645 # ifdef __STDC__
 646     void GC_debug_register_finalizer_ignore_self
 647                                     (GC_PTR obj, GC_finalization_proc fn,
 648                                      GC_PTR cd, GC_finalization_proc *ofn,
 649                                      GC_PTR *ocd)
 650 # else
 651     void GC_debug_register_finalizer_ignore_self
 652                                     (obj, fn, cd, ofn, ocd)
 653     GC_PTR obj;
 654     GC_finalization_proc fn;
 655     GC_PTR cd;
 656     GC_finalization_proc *ofn;
 657     GC_PTR *ocd;
 658 # endif
 659 {
 660     ptr_t base = GC_base(obj);
 661     if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
 662         GC_err_printf1(
 663             "GC_register_finalizer_ignore_self called with non-base-pointer 0x%lx\n",
 664             obj);
 665     }
 666     GC_register_finalizer_ignore_self(base, GC_debug_invoke_finalizer,
 667                                       GC_make_closure(fn,cd), ofn, ocd);
 668 }
 669
 670 # ifdef __STDC__
 671     void GC_debug_register_finalizer_no_order
 672                                     (GC_PTR obj, GC_finalization_proc fn,
 673                                      GC_PTR cd, GC_finalization_proc *ofn,
 674                                      GC_PTR *ocd)
 675 # else
 676     void GC_debug_register_finalizer_no_order
 677                                     (obj, fn, cd, ofn, ocd)
 678     GC_PTR obj;
 679     GC_finalization_proc fn;
 680     GC_PTR cd;
 681     GC_finalization_proc *ofn;
 682     GC_PTR *ocd;
 683 # endif
 684 {
 685     ptr_t base = GC_base(obj);
 686     if (0 == base || (ptr_t)obj - base != sizeof(oh)) {
 687         GC_err_printf1(
 688             "GC_register_finalizer_no_order called with non-base-pointer 0x%lx\n",
 689             obj);
 690     }
 691     GC_register_finalizer_no_order(base, GC_debug_invoke_finalizer,
 692                                       GC_make_closure(fn,cd), ofn, ocd);
 693 }