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Mikael Djurfeldt 1999-06-23 11:19:45 +00:00
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1999-06-23 Mikael Djurfeldt <mdj@mdj-pc.nada.kth.se>
* struct.c, struct.h:
In order to support different kinds of deallocation, a destructor
slot has been added to struct vtables. This allows for structs
containing pointers to other memory blocks.
(scm_struct_i_free): New hidden struct slot. Holds destructor for
instances to this vtable.
(scm_struct_free_0): New destructor: Doesn't deallocate data.
(scm_struct_free_light): New destructor: Deallocates a light
struct (i.e. a struct without hidden slots).
(scm_struct_free_standard): New destructor: Deallocates standard
structs.
(scm_struct_free_entity): New destructor: Deallocates entity
structs.
(SCM_SET_VTABLE_DESTRUCTOR): New macro.
Changes to hidden slots:
(scm_struct_i_size): scm_struct_i_flags now shares space with
scm_struct_i_size which holds the size of light structs.
(scm_struct_i_n_words): This slot has changed meaning. Previously
it included hidden slots. Now it indicates visible slots.
(scm_alloc_struct): Clear flags.
(SCM_STRUCTF_MASK): 4 new flag positions added => 12 bits.
(struct_num, scm_struct_i_tag): Removed.
(scm_struct_vtable_tag): Base tag on the pointer to mallocated
memory.
(scm_struct_ihashq): Base hash value on pointer to struct handle.
* tag.c (scm_tag): Base tag on vtable pointer.
* objects.c (scm_init_objects): Initialize destructor slot of the
primordial entity class.
* objects.h (SCM_SET_CLASS_DESTRUCTOR,
SCM_SET_CLASS_INSTANCE_SIZE): New macros.
* gc.c (scm_gc_sweep): Call struct free slot.
* keywords.c, keywords.h (scm_c_make_keyword): New function.
(We should remove the use of the prefix '-'.)
* snarf.h (SCM_KEYWORD, SCM_GLOBAL_KEYWORD): New macros.
* libguile.h: #include "objects.h"
1999-06-22 Marius Vollmer <mvo@zagadka.ping.de>
* dynl.c (DYNL_GLOBAL): New.