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* Added SCM_DEBUG_CELL_ACCESSES debug option.

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This commit is contained in:
Dirk Herrmann 2000-05-19 15:46:32 +00:00
parent 1a548472dd
commit 46d53380a2
3 changed files with 37 additions and 4 deletions
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13
libguile/ChangeLog
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@ -1,3 +1,16 @@
2000-05-19 Dirk Herrmann <D.Herrmann@tu-bs.de>
* __scm.h (SCM_DEBUG_CELL_ACCESSES), gc.h (SCM_): Added as a new
debug option to verify all accesses to cells actually access
objects on the heap.
* gc.h (SCM_VALIDATE_CELL): Added. Only performs validation if
SCM_DEBUG_CELL_ACCESSES is set to 1.
(SCM_CELL_WORD, SCM_CELL_OBJECT, SCM_SET_CELL_WORD,
SCM_SET_CELL_OBJECT): Use SCM_VALIDATE_CELL to check every cell
that is accessed.
2000-05-19 Dirk Herrmann <D.Herrmann@tu-bs.de>
* gh_data.c (gh_scm2chars, gh_scm2shorts, gh_scm2longs,

9
libguile/__scm.h
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@ -160,6 +160,15 @@
#define SCM_DEBUG 0
#endif
/* If SCM_DEBUG_CELL_ACCESSES is set to 1, cell accesses will perform
* exhaustive parameter checking: It will be verified that cell parameters
* actually point to a valid heap cell. Note: If this option is enabled,
* guile will run about ten times slower than normally.
*/
#ifndef SCM_DEBUG_CELL_ACCESSES
#define SCM_DEBUG_CELL_ACCESSES SCM_DEBUG
#endif
/* If SCM_DEBUG_DEPRECATED is set to 1, deprecated code is not compiled. This
* can be used by developers to get rid of references to deprecated code.
*/

19
libguile/gc.h
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@ -85,25 +85,36 @@ typedef scm_cell * SCM_CELLPTR;
/* Low level cell data accessing macros:
*/
#define SCM_CELL_WORD(x, n) (((scm_bits_t *) SCM2PTR (x)) [n])
#define SCM_VALIDATE_CELL(x) \
(SCM_DEBUG_CELL_ACCESSES ? (!scm_cellp (x) ? abort () : 1) : 1)
#define SCM_CELL_WORD(x, n) \
((SCM_VALIDATE_CELL (x)), \
(((scm_bits_t *) SCM2PTR (x)) [n]))
#define SCM_CELL_WORD_0(x) SCM_CELL_WORD (x, 0)
#define SCM_CELL_WORD_1(x) SCM_CELL_WORD (x, 1)
#define SCM_CELL_WORD_2(x) SCM_CELL_WORD (x, 2)
#define SCM_CELL_WORD_3(x) SCM_CELL_WORD (x, 3)
#define SCM_CELL_OBJECT(x, n) (SCM_PACK (((scm_bits_t *) SCM2PTR (x)) [n]))
#define SCM_CELL_OBJECT(x, n) \
((SCM_VALIDATE_CELL (x)), \
(SCM_PACK (((scm_bits_t *) SCM2PTR (x)) [n])))
#define SCM_CELL_OBJECT_0(x) SCM_CELL_OBJECT (x, 0)
#define SCM_CELL_OBJECT_1(x) SCM_CELL_OBJECT (x, 1)
#define SCM_CELL_OBJECT_2(x) SCM_CELL_OBJECT (x, 2)
#define SCM_CELL_OBJECT_3(x) SCM_CELL_OBJECT (x, 3)
#define SCM_SET_CELL_WORD(x, n, v) ((((scm_bits_t *) SCM2PTR (x)) [n]) = (scm_bits_t) (v))
#define SCM_SET_CELL_WORD(x, n, v) \
((SCM_VALIDATE_CELL (x)), \
((((scm_bits_t *) SCM2PTR (x)) [n]) = (scm_bits_t) (v)))
#define SCM_SET_CELL_WORD_0(x, v) SCM_SET_CELL_WORD (x, 0, v)
#define SCM_SET_CELL_WORD_1(x, v) SCM_SET_CELL_WORD (x, 1, v)
#define SCM_SET_CELL_WORD_2(x, v) SCM_SET_CELL_WORD (x, 2, v)
#define SCM_SET_CELL_WORD_3(x, v) SCM_SET_CELL_WORD (x, 3, v)
#define SCM_SET_CELL_OBJECT(x, n, v) ((((scm_bits_t *) SCM2PTR (x)) [n]) = SCM_UNPACK (v))
#define SCM_SET_CELL_OBJECT(x, n, v) \
((SCM_VALIDATE_CELL (x)), \
((((scm_bits_t *) SCM2PTR (x)) [n]) = SCM_UNPACK (v)))
#define SCM_SET_CELL_OBJECT_0(x, v) SCM_SET_CELL_OBJECT (x, 0, v)
#define SCM_SET_CELL_OBJECT_1(x, v) SCM_SET_CELL_OBJECT (x, 1, v)
#define SCM_SET_CELL_OBJECT_2(x, v) SCM_SET_CELL_OBJECT (x, 2, v)