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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/weak-set.c
View file

@ -521,7 +521,7 @@ weak_set_add_x (scm_t_weak_set *set, unsigned long hash,
if (SCM_HEAP_OBJECT_P (obj))
SCM_I_REGISTER_DISAPPEARING_LINK ((GC_PTR) &entries[k].key,
(GC_PTR) SCM2PTR (obj));
(GC_PTR) SCM_HEAP_OBJECT_BASE (obj));
return obj;
}
@ -684,7 +684,7 @@ scm_c_register_weak_gc_callback (SCM obj, void (*callback) (SCM))
weak[0] = SCM_UNPACK_POINTER (obj);
weak[1] = (void*)callback;
GC_GENERAL_REGISTER_DISAPPEARING_LINK (weak, SCM2PTR (obj));
GC_GENERAL_REGISTER_DISAPPEARING_LINK (weak, SCM_HEAP_OBJECT_BASE (obj));
#ifdef HAVE_GC_SET_START_CALLBACK
scm_c_hook_add (&scm_after_gc_c_hook, weak_gc_hook, weak, 0);