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add SCM_HEAP_OBJECT_BASE

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* libguile/tags.h (SCM_HEAP_OBJECT_BASE): New macro.  Given a SCM,
  returns a pointer to the start of its memory area on the heap.

* libguile/bytevectors.c:
* libguile/fluids.c:
* libguile/foreign.c:
* libguile/gc.h:
* libguile/guardians.c:
* libguile/numbers.h:
* libguile/ports.c:
* libguile/smob.c:
* libguile/struct.c:
* libguile/weak-set.c:
* libguile/weak-table.c:
* libguile/weak-vector.c: Use it.
This commit is contained in:
Andy Wingo 2011-10-24 18:22:35 +02:00
parent 8c5bb72920
commit 47ed8656db
14 changed files with 41 additions and 25 deletions
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4
libguile/foreign.c
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@ -152,7 +152,7 @@ scm_from_pointer (void *ptr, scm_t_pointer_finalizer finalizer)
/* Register a finalizer for the newly created instance. */
GC_finalization_proc prev_finalizer;
GC_PTR prev_finalizer_data;
GC_REGISTER_FINALIZER_NO_ORDER (SCM2PTR (ret),
GC_REGISTER_FINALIZER_NO_ORDER (SCM_HEAP_OBJECT_BASE (ret),
pointer_finalizer_trampoline,
finalizer,
&prev_finalizer,
@ -317,7 +317,7 @@ SCM_DEFINE (scm_set_pointer_finalizer_x, "set-pointer-finalizer!", 2, 0, 0,
SCM_SET_CELL_WORD_0 (pointer, SCM_CELL_WORD_0 (pointer) | (1 << 16UL));
GC_REGISTER_FINALIZER_NO_ORDER (SCM2PTR (pointer),
GC_REGISTER_FINALIZER_NO_ORDER (SCM_HEAP_OBJECT_BASE (pointer),
pointer_finalizer_trampoline,
c_finalizer,
&prev_finalizer,