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Diffstat (limited to 'gc/dbg_mlc.c')
| -rw-r--r-- | gc/dbg_mlc.c | 799 |
1 files changed, 799 insertions, 0 deletions
diff --git a/gc/dbg_mlc.c b/gc/dbg_mlc.c new file mode 100644 index 0000000..6483256 --- /dev/null +++ b/gc/dbg_mlc.c @@ -0,0 +1,799 @@ +/* + * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers + * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. + * Copyright (c) 1997 by Silicon Graphics. All rights reserved. + * + * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED + * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. + * + * Permission is hereby granted to use or copy this program + * for any purpose, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + */ +# define I_HIDE_POINTERS +# include "gc_priv.h" +# ifdef KEEP_BACK_PTRS +# include "backptr.h" +# endif + +void GC_default_print_heap_obj_proc(); +GC_API void GC_register_finalizer_no_order + GC_PROTO((GC_PTR obj, GC_finalization_proc fn, GC_PTR cd, + GC_finalization_proc *ofn, GC_PTR *ocd)); + +/* Do we want to and know how to save the call stack at the time of */ +/* an allocation? How much space do we want to use in each object? */ + +# define START_FLAG ((word)0xfedcedcb) +# define END_FLAG ((word)0xbcdecdef) + /* Stored both one past the end of user object, and one before */ + /* the end of the object as seen by the allocator. */ + + +/* Object header */ +typedef struct { +# ifdef KEEP_BACK_PTRS + ptr_t oh_back_ptr; +# define MARKED_FOR_FINALIZATION (ptr_t)(-1) + /* Object was marked because it is finalizable. */ +# ifdef ALIGN_DOUBLE + word oh_dummy; +# endif +# endif + char * oh_string; /* object descriptor string */ + word oh_int; /* object descriptor integers */ +# ifdef NEED_CALLINFO + struct callinfo oh_ci[NFRAMES]; +# endif + word oh_sz; /* Original malloc arg. */ + word oh_sf; /* start flag */ +} oh; +/* The size of the above structure is assumed not to dealign things, */ +/* and to be a multiple of the word length. */ + +#define DEBUG_BYTES (sizeof (oh) + sizeof (word)) +#undef ROUNDED_UP_WORDS +#define ROUNDED_UP_WORDS(n) BYTES_TO_WORDS((n) + WORDS_TO_BYTES(1) - 1) + + +#ifdef SAVE_CALL_CHAIN +# define ADD_CALL_CHAIN(base, ra) GC_save_callers(((oh *)(base)) -> oh_ci) +# define PRINT_CALL_CHAIN(base) GC_print_callers(((oh *)(base)) -> oh_ci) +#else +# ifdef GC_ADD_CALLER +# define ADD_CALL_CHAIN(base, ra) ((oh *)(base)) -> oh_ci[0].ci_pc = (ra) +# define PRINT_CALL_CHAIN(base) GC_print_callers(((oh *)(base)) -> oh_ci) +# else +# define ADD_CALL_CHAIN(base, ra) +# define PRINT_CALL_CHAIN(base) +# endif +#endif + +/* Check whether object with base pointer p has debugging info */ +/* p is assumed to point to a legitimate object in our part */ +/* of the heap. */ +GC_bool GC_has_debug_info(p) +ptr_t p; +{ + register oh * ohdr = (oh *)p; + register ptr_t body = (ptr_t)(ohdr + 1); + register word sz = GC_size((ptr_t) ohdr); + + if (HBLKPTR((ptr_t)ohdr) != HBLKPTR((ptr_t)body) + || sz < sizeof (oh)) { + return(FALSE); + } + if (ohdr -> oh_sz == sz) { + /* Object may have had debug info, but has been deallocated */ + return(FALSE); + } + if (ohdr -> oh_sf == (START_FLAG ^ (word)body)) return(TRUE); + if (((word *)ohdr)[BYTES_TO_WORDS(sz)-1] == (END_FLAG ^ (word)body)) { + return(TRUE); + } + return(FALSE); +} + +#ifdef KEEP_BACK_PTRS + /* Store back pointer to source in dest, if that appears to be possible. */ + /* This is not completely safe, since we may mistakenly conclude that */ + /* dest has a debugging wrapper. But the error probability is very */ + /* small, and this shouldn't be used in production code. */ + /* We assume that dest is the real base pointer. Source will usually */ + /* be a pointer to the interior of an object. */ + void GC_store_back_pointer(ptr_t source, ptr_t dest) + { + if (GC_has_debug_info(dest)) { + ((oh *)dest) -> oh_back_ptr = (ptr_t)HIDE_POINTER(source); + } + } + + void GC_marked_for_finalization(ptr_t dest) { + GC_store_back_pointer(MARKED_FOR_FINALIZATION, dest); + } + + /* Store information about the object referencing dest in *base_p */ + /* and *offset_p. */ + /* source is root ==> *base_p = 0, *offset_p = address */ + /* source is heap object ==> *base_p != 0, *offset_p = offset */ + /* Returns 1 on success, 0 if source couldn't be determined. */ + /* Dest can be any address within a heap object. */ + GC_ref_kind GC_get_back_ptr_info(void *dest, void **base_p, size_t *offset_p) + { + oh * hdr = (oh *)GC_base(dest); + ptr_t bp; + ptr_t bp_base; + if (!GC_has_debug_info((ptr_t) hdr)) return GC_NO_SPACE; + bp = hdr -> oh_back_ptr; + if (MARKED_FOR_FINALIZATION == bp) return GC_FINALIZER_REFD; + if (0 == bp) return GC_UNREFERENCED; + bp = REVEAL_POINTER(bp); + bp_base = GC_base(bp); + if (0 == bp_base) { + *base_p = bp; + *offset_p = 0; + return GC_REFD_FROM_ROOT; + } else { + if (GC_has_debug_info(bp_base)) bp_base += sizeof(oh); + *base_p = bp_base; + *offset_p = bp - bp_base; + return GC_REFD_FROM_HEAP; + } + } + + /* Generate a random heap address. */ + /* The resulting address is in the heap, but */ + /* not necessarily inside a valid object. */ + void *GC_generate_random_heap_address(void) + { + int i; + int heap_offset = random() % GC_heapsize; + for (i = 0; i < GC_n_heap_sects; ++ i) { + int size = GC_heap_sects[i].hs_bytes; + if (heap_offset < size) { + return GC_heap_sects[i].hs_start + heap_offset; + } else { + heap_offset -= size; + } + } + ABORT("GC_generate_random_heap_address: size inconsistency"); + /*NOTREACHED*/ + return 0; + } + + /* Generate a random address inside a valid marked heap object. */ + void *GC_generate_random_valid_address(void) + { + ptr_t result; + ptr_t base; + for (;;) { + result = GC_generate_random_heap_address(); + base = GC_base(result); + if (0 == base) continue; + if (!GC_is_marked(base)) continue; + return result; + } + } + + /* Force a garbage collection and generate a backtrace from a */ + /* random heap address. */ + void GC_generate_random_backtrace(void) + { + void * current; + int i; + void * base; + size_t offset; + GC_ref_kind source; + GC_gcollect(); + current = GC_generate_random_valid_address(); + GC_printf1("Chose address 0x%lx in object\n", (unsigned long)current); + GC_print_heap_obj(GC_base(current)); + GC_err_printf0("\n"); + for (i = 0; ; ++i) { + source = GC_get_back_ptr_info(current, &base, &offset); + if (GC_UNREFERENCED == source) { + GC_err_printf0("Reference could not be found\n"); + goto out; + } + if (GC_NO_SPACE == source) { + GC_err_printf0("No debug info in object: Can't find reference\n"); + goto out; + } + GC_err_printf1("Reachable via %d levels of pointers from ", + (unsigned long)i); + switch(source) { + case GC_REFD_FROM_ROOT: + GC_err_printf1("root at 0x%lx\n", (unsigned long)base); + goto out; + case GC_FINALIZER_REFD: + GC_err_printf0("list of finalizable objects\n"); + goto out; + case GC_REFD_FROM_HEAP: + GC_err_printf1("offset %ld in object:\n", (unsigned long)offset); + /* Take GC_base(base) to get real base, i.e. header. */ + GC_print_heap_obj(GC_base(base)); + GC_err_printf0("\n"); + break; + } + current = base; + } + out:; + } + +#endif /* KEEP_BACK_PTRS */ + +/* Store debugging info into p. Return displaced pointer. */ +/* Assumes we don't hold allocation lock. */ +ptr_t GC_store_debug_info(p, sz, string, integer) +register ptr_t p; /* base pointer */ +word sz; /* bytes */ +char * string; +word integer; +{ + register word * result = (word *)((oh *)p + 1); + DCL_LOCK_STATE; + + /* There is some argument that we should dissble signals here. */ + /* But that's expensive. And this way things should only appear */ + /* inconsistent while we're in the handler. */ + LOCK(); +# ifdef KEEP_BACK_PTRS + ((oh *)p) -> oh_back_ptr = 0; +# endif + ((oh *)p) -> oh_string = string; + ((oh *)p) -> oh_int = integer; + ((oh *)p) -> oh_sz = sz; + ((oh *)p) -> oh_sf = START_FLAG ^ (word)result; + ((word *)p)[BYTES_TO_WORDS(GC_size(p))-1] = + result[ROUNDED_UP_WORDS(sz)] = END_FLAG ^ (word)result; + UNLOCK(); + return((ptr_t)result); +} + +/* Check the object with debugging info at ohdr */ +/* return NIL if it's OK. Else return clobbered */ +/* address. */ +ptr_t GC_check_annotated_obj(ohdr) +register oh * ohdr; +{ + register ptr_t body = (ptr_t)(ohdr + 1); + register word gc_sz = GC_size((ptr_t)ohdr); + if (ohdr -> oh_sz + DEBUG_BYTES > gc_sz) { + return((ptr_t)(&(ohdr -> oh_sz))); + } + if (ohdr -> oh_sf != (START_FLAG ^ (word)body)) { + return((ptr_t)(&(ohdr -> oh_sf))); + } + if (((word *)ohdr)[BYTES_TO_WORDS(gc_sz)-1] != (END_FLAG ^ (word)body)) { + return((ptr_t)((word *)ohdr + BYTES_TO_WORDS(gc_sz)-1)); + } + if (((word *)body)[ROUNDED_UP_WORDS(ohdr -> oh_sz)] + != (END_FLAG ^ (word)body)) { + return((ptr_t)((word *)body + ROUNDED_UP_WORDS(ohdr -> oh_sz))); + } + return(0); +} + +void GC_print_obj(p) +ptr_t p; +{ + register oh * ohdr = (oh *)GC_base(p); + + GC_err_printf1("0x%lx (", ((unsigned long)ohdr + sizeof(oh))); + GC_err_puts(ohdr -> oh_string); + GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int), + (unsigned long)(ohdr -> oh_sz)); + PRINT_CALL_CHAIN(ohdr); +} + +void GC_debug_print_heap_obj_proc(p) +ptr_t p; +{ + if (GC_has_debug_info(p)) { + GC_print_obj(p); + } else { + GC_default_print_heap_obj_proc(p); + } +} + +void GC_print_smashed_obj(p, clobbered_addr) +ptr_t p, clobbered_addr; +{ + register oh * ohdr = (oh *)GC_base(p); + + GC_err_printf2("0x%lx in object at 0x%lx(", (unsigned long)clobbered_addr, + (unsigned long)p); + if (clobbered_addr <= (ptr_t)(&(ohdr -> oh_sz)) + || ohdr -> oh_string == 0) { + GC_err_printf1("<smashed>, appr. sz = %ld)\n", + (GC_size((ptr_t)ohdr) - DEBUG_BYTES)); + } else { + if (ohdr -> oh_string[0] == '\0') { + GC_err_puts("EMPTY(smashed?)"); + } else { + GC_err_puts(ohdr -> oh_string); + } + GC_err_printf2(":%ld, sz=%ld)\n", (unsigned long)(ohdr -> oh_int), + (unsigned long)(ohdr -> oh_sz)); + PRINT_CALL_CHAIN(ohdr); + } +} + +void GC_check_heap_proc(); + +void GC_start_debugging() +{ + GC_check_heap = GC_check_heap_proc; + GC_print_heap_obj = GC_debug_print_heap_obj_proc; + GC_debugging_started = TRUE; + GC_register_displacement((word)sizeof(oh)); +} + +# if defined(__STDC__) || defined(__cplusplus) + void GC_debug_register_displacement(GC_word offset) +# else + void GC_debug_register_displacement(offset) + GC_word offset; +# endif +{ + GC_register_displacement(offset); + GC_register_displacement((word)sizeof(oh) + offset); +} + +# ifdef GC_ADD_CALLER +# define EXTRA_ARGS word ra, char * s, int i +# define OPT_RA ra, +# else +# define EXTRA_ARGS char * s, int i +# define OPT_RA +# endif + +# ifdef __STDC__ + GC_PTR GC_debug_malloc(size_t lb, EXTRA_ARGS) +# else + GC_PTR GC_debug_malloc(lb, s, i) + size_t lb; + char * s; + int i; +# ifdef GC_ADD_CALLER + --> GC_ADD_CALLER not implemented for K&R C +# endif +# endif +{ + GC_PTR result = GC_malloc(lb + DEBUG_BYTES); + + if (result == 0) { + GC_err_printf1("GC_debug_malloc(%ld) returning NIL (", + (unsigned long) lb); + GC_err_puts(s); + GC_err_printf1(":%ld)\n", (unsigned long)i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, (word)i)); +} + +#ifdef STUBBORN_ALLOC +# ifdef __STDC__ + GC_PTR GC_debug_malloc_stubborn(size_t lb, EXTRA_ARGS) +# else + GC_PTR GC_debug_malloc_stubborn(lb, s, i) + size_t lb; + char * s; + int i; +# endif +{ + GC_PTR result = GC_malloc_stubborn(lb + DEBUG_BYTES); + + if (result == 0) { + GC_err_printf1("GC_debug_malloc(%ld) returning NIL (", + (unsigned long) lb); + GC_err_puts(s); + GC_err_printf1(":%ld)\n", (unsigned long)i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, (word)i)); +} + +void GC_debug_change_stubborn(p) +GC_PTR p; +{ + register GC_PTR q = GC_base(p); + register hdr * hhdr; + + if (q == 0) { + GC_err_printf1("Bad argument: 0x%lx to GC_debug_change_stubborn\n", + (unsigned long) p); + ABORT("GC_debug_change_stubborn: bad arg"); + } + hhdr = HDR(q); + if (hhdr -> hb_obj_kind != STUBBORN) { + GC_err_printf1("GC_debug_change_stubborn arg not stubborn: 0x%lx\n", + (unsigned long) p); + ABORT("GC_debug_change_stubborn: arg not stubborn"); + } + GC_change_stubborn(q); +} + +void GC_debug_end_stubborn_change(p) +GC_PTR p; +{ + register GC_PTR q = GC_base(p); + register hdr * hhdr; + + if (q == 0) { + GC_err_printf1("Bad argument: 0x%lx to GC_debug_end_stubborn_change\n", + (unsigned long) p); + ABORT("GC_debug_end_stubborn_change: bad arg"); + } + hhdr = HDR(q); + if (hhdr -> hb_obj_kind != STUBBORN) { + GC_err_printf1("debug_end_stubborn_change arg not stubborn: 0x%lx\n", + (unsigned long) p); + ABORT("GC_debug_end_stubborn_change: arg not stubborn"); + } + GC_end_stubborn_change(q); +} + +#endif /* STUBBORN_ALLOC */ + +# ifdef __STDC__ + GC_PTR GC_debug_malloc_atomic(size_t lb, EXTRA_ARGS) +# else + GC_PTR GC_debug_malloc_atomic(lb, s, i) + size_t lb; + char * s; + int i; +# endif +{ + GC_PTR result = GC_malloc_atomic(lb + DEBUG_BYTES); + + if (result == 0) { + GC_err_printf1("GC_debug_malloc_atomic(%ld) returning NIL (", + (unsigned long) lb); + GC_err_puts(s); + GC_err_printf1(":%ld)\n", (unsigned long)i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, (word)i)); +} + +# ifdef __STDC__ + GC_PTR GC_debug_malloc_uncollectable(size_t lb, EXTRA_ARGS) +# else + GC_PTR GC_debug_malloc_uncollectable(lb, s, i) + size_t lb; + char * s; + int i; +# endif +{ + GC_PTR result = GC_malloc_uncollectable(lb + DEBUG_BYTES); + + if (result == 0) { + GC_err_printf1("GC_debug_malloc_uncollectable(%ld) returning NIL (", + (unsigned long) lb); + GC_err_puts(s); + GC_err_printf1(":%ld)\n", (unsigned long)i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, (word)i)); +} + +#ifdef ATOMIC_UNCOLLECTABLE +# ifdef __STDC__ + GC_PTR GC_debug_malloc_atomic_uncollectable(size_t lb, EXTRA_ARGS) +# else + GC_PTR GC_debug_malloc_atomic_uncollectable(lb, s, i) + size_t lb; + char * s; + int i; +# endif +{ + GC_PTR result = GC_malloc_atomic_uncollectable(lb + DEBUG_BYTES); + + if (result == 0) { + GC_err_printf1( + "GC_debug_malloc_atomic_uncollectable(%ld) returning NIL (", + (unsigned long) lb); + GC_err_puts(s); + GC_err_printf1(":%ld)\n", (unsigned long)i); + return(0); + } + if (!GC_debugging_started) { + GC_start_debugging(); + } + ADD_CALL_CHAIN(result, ra); + return (GC_store_debug_info(result, (word)lb, s, (word)i)); +} +#endif /* ATOMIC_UNCOLLECTABLE */ + +# ifdef __STDC__ + void GC_debug_free(GC_PTR p) +# else + void GC_debug_free(p) + GC_PTR p; +# endif +{ + register GC_PTR base = GC_base(p); + register ptr_t clobbered; + + if (base == 0) { + GC_err_printf1("Attempt to free invalid pointer %lx\n", + (unsigned long)p); + if (p != 0) ABORT("free(invalid pointer)"); + } + if ((ptr_t)p - (ptr_t)base != sizeof(oh)) { + GC_err_printf1( + "GC_debug_free called on pointer %lx wo debugging info\n", + (unsigned long)p); + } else { + clobbered = GC_check_annotated_obj((oh *)base); + if (clobbered != 0) { + if (((oh *)base) -> oh_sz == GC_size(base)) { + GC_err_printf0( + "GC_debug_free: found previously deallocated (?) object at "); + } else { + GC_err_printf0("GC_debug_free: found smashed location at "); + } + GC_print_smashed_obj(p, clobbered); + } + /* Invalidate size */ + ((oh *)base) -> oh_sz = GC_size(base); + } + if (GC_find_leak) { + GC_free(base); + } else { + register hdr * hhdr = HDR(p); + GC_bool uncollectable = FALSE; + + if (hhdr -> hb_obj_kind == UNCOLLECTABLE) { + uncollectable = TRUE; + } +# ifdef ATOMIC_UNCOLLECTABLE + if (hhdr -> hb_obj_kind == AUNCOLLECTABLE) { + uncollectable = TRUE; + } +# endif + if (uncollectable) GC_free(base); + } /* !GC_find_leak */ +} + +# ifdef __STDC__ + GC_PTR GC_debug_realloc(GC_PTR p, size_t lb, EXTRA_ARGS) +# else + GC_PTR GC_debug_realloc(p, lb, s, i) + GC_PTR p; + size_t lb; + char *s; + int i; +# endif +{ + register GC_PTR base = GC_base(p); + register ptr_t clobbered; + register GC_PTR result; + register size_t copy_sz = lb; + register size_t old_sz; + register hdr * hhdr; + + if (p == 0) return(GC_debug_malloc(lb, OPT_RA s, i)); + if (base == 0) { + GC_err_printf1( + "Attempt to reallocate invalid pointer %lx\n", (unsigned long)p); + ABORT("realloc(invalid pointer)"); + } + if ((ptr_t)p - (ptr_t)base != sizeof(oh)) { + GC_err_printf1( + "GC_debug_realloc called on pointer %lx wo debugging info\n", + (unsigned long)p); + return(GC_realloc(p, lb)); + } + hhdr = HDR(base); + switch (hhdr -> hb_obj_kind) { +# ifdef STUBBORN_ALLOC + case STUBBORN: + result = GC_debug_malloc_stubborn(lb, OPT_RA s, i); + break; +# endif + case NORMAL: + result = GC_debug_malloc(lb, OPT_RA s, i); + break; + case PTRFREE: + result = GC_debug_malloc_atomic(lb, OPT_RA s, i); + break; + case UNCOLLECTABLE: + result = GC_debug_malloc_uncollectable(lb, OPT_RA s, i); + break; +# ifdef ATOMIC_UNCOLLECTABLE + case AUNCOLLECTABLE: + result = GC_debug_malloc_atomic_uncollectable(lb, OPT_RA s, i); + break; +# endif + default: + GC_err_printf0("GC_debug_realloc: encountered bad kind\n"); + ABORT("bad kind"); + } + clobbered = GC_check_annotated_obj((oh *)base); + if (clobbered != 0) { + GC_err_printf0("GC_debug_realloc: found smashed location at "); + GC_print_smashed_obj(p, clobbered); + } + old_sz = ((oh *)base) -> oh_sz; + if (old_sz < copy_sz) copy_sz = old_sz; + if (result == 0) return(0); + BCOPY(p, result, copy_sz); + GC_debug_free(p); + return(result); +} + +/* Check all marked objects in the given block for validity */ +/*ARGSUSED*/ +void GC_check_heap_block(hbp, dummy) +register struct hblk *hbp; /* ptr to current heap block */ +word dummy; +{ + register struct hblkhdr * hhdr = HDR(hbp); + register word sz = hhdr -> hb_sz; + register int word_no; + register word *p, *plim; + + p = (word *)(hbp->hb_body); + word_no = HDR_WORDS; + if (sz > MAXOBJSZ) { + plim = p; + } else { + plim = (word *)((((word)hbp) + HBLKSIZE) - WORDS_TO_BYTES(sz)); + } + /* go through all words in block */ + while( p <= plim ) { + if( mark_bit_from_hdr(hhdr, word_no) + && GC_has_debug_info((ptr_t)p)) { + ptr_t clobbered = GC_check_annotated_obj((oh *)p); + + if (clobbered != 0) { + GC_err_printf0( + "GC_check_heap_block: found smashed location at "); + GC_print_smashed_obj((ptr_t)p, clobbered); + } + } + word_no += sz; + p += sz; + } +} + + +/* This assumes that all accessible objects are marked, and that */ +/* I hold the allocation lock. Normally called by collector. */ +void GC_check_heap_proc() +{ +# ifndef SMALL_CONFIG + if (sizeof(oh) & (2 * sizeof(word) - 1) != 0) { + ABORT("Alignment problem: object header has inappropriate size\n"); + } +# endif + GC_apply_to_all_blocks(GC_check_heap_block, (word)0); +} + +struct closure { + GC_finalization_proc cl_fn; + GC_PTR cl_data; +}; + +# ifdef __STDC__ + void * GC_make_closure(GC_finalization_proc fn, void * data) +# else + GC_PTR GC_make_closure(fn, data) + GC_finalization_proc fn; + GC_PTR data; +# endif +{ + struct closure * result = + (struct closure *) GC_malloc(sizeof (struct closure)); + + result -> cl_fn = fn; + result -> cl_data = data; + return((GC_PTR)result); +} + +# ifdef __STDC__ + void GC_debug_invoke_finalizer(void * obj, void * data) +# else + void GC_debug_invoke_finalizer(obj, data) + char * obj; + char * data; +# endif +{ + register struct closure * cl = (struct closure *) data; + + (*(cl -> cl_fn))((GC_PTR)((char *)obj + sizeof(oh)), cl -> cl_data); +} + + +# ifdef __STDC__ + void GC_debug_register_finalizer(GC_PTR obj, GC_finalization_proc fn, + GC_PTR cd, GC_finalization_proc *ofn, + GC_PTR *ocd) +# else + void GC_debug_register_finalizer(obj, fn, cd, ofn, ocd) + GC_PTR obj; + GC_finalization_proc fn; + GC_PTR cd; + GC_finalization_proc *ofn; + GC_PTR *ocd; +# endif +{ + ptr_t base = GC_base(obj); + if (0 == base || (ptr_t)obj - base != sizeof(oh)) { + GC_err_printf1( + "GC_register_finalizer called with non-base-pointer 0x%lx\n", + obj); + } + GC_register_finalizer(base, GC_debug_invoke_finalizer, + GC_make_closure(fn,cd), ofn, ocd); +} + +# ifdef __STDC__ + void GC_debug_register_finalizer_no_order + (GC_PTR obj, GC_finalization_proc fn, + GC_PTR cd, GC_finalization_proc *ofn, + GC_PTR *ocd) +# else + void GC_debug_register_finalizer_no_order + (obj, fn, cd, ofn, ocd) + GC_PTR obj; + GC_finalization_proc fn; + GC_PTR cd; + GC_finalization_proc *ofn; + GC_PTR *ocd; +# endif +{ + ptr_t base = GC_base(obj); + if (0 == base || (ptr_t)obj - base != sizeof(oh)) { + GC_err_printf1( + "GC_register_finalizer_no_order called with non-base-pointer 0x%lx\n", + obj); + } + GC_register_finalizer_no_order(base, GC_debug_invoke_finalizer, + GC_make_closure(fn,cd), ofn, ocd); + } + +# ifdef __STDC__ + void GC_debug_register_finalizer_ignore_self + (GC_PTR obj, GC_finalization_proc fn, + GC_PTR cd, GC_finalization_proc *ofn, + GC_PTR *ocd) +# else + void GC_debug_register_finalizer_ignore_self + (obj, fn, cd, ofn, ocd) + GC_PTR obj; + GC_finalization_proc fn; + GC_PTR cd; + GC_finalization_proc *ofn; + GC_PTR *ocd; +# endif +{ + ptr_t base = GC_base(obj); + if (0 == base || (ptr_t)obj - base != sizeof(oh)) { + GC_err_printf1( + "GC_register_finalizer_ignore_self called with non-base-pointer 0x%lx\n", + obj); + } + GC_register_finalizer_ignore_self(base, GC_debug_invoke_finalizer, + GC_make_closure(fn,cd), ofn, ocd); +} |