* configure: Support a gen-gc configuration variable which

causes CONFIG_GEN_GC to be defined as 1 in config.h.

* eval.c (op_defvar, dwim_loc, op_modplace, transform_op): Handle
mutating assignments via set macro.
(op_dohash): Inform gc about mutated variables. TODO here.

* filter.c (trie_add, trie_compress): Handle mutating assignments
via set macro.

* gc.c (BACKPTR_VEC_SIZE, FULL_GC_INTERVAL): New preprocessor symbols.
(backptr, backptr_idx, partial_gc_count, full): New static variables.
(make_obj): Initialize generation to zero.
(gc): Added logic for deciding between full and partial gc.
(gc_set, gc_mutated): New functions.

* gc.h (gc_set, gc_mutated): Declared.

* hash.c (hash_mark): Changed useless use of vecref_l to vecref.
(gethash_f): Use set when assigning through *found since it
is a possible mutation.

* lib.c (car_l, cdr_l, vecref_l): Got rid of loc macro uses. Using the
value properly is going to be the caller's responsibility.
(push): push may be a mutation, so use set.
(intern): Uset set to mutate a hash entry.
(acons_new_l, aconsq_new_l): Use set when replacing *list.

* lib.h (PTR_BIT): New preprocessor symbol.
(obj_common): New macro for defining common object fields.
type_t is split into two bitfields, half a pointer wide,
allowing for generation to be represented.
(struct any, struct cons, struct string, struct sym, struct package,
struct func, struct vec, struct lazy_cons, struct cobj, struct env,
struct bignum, struct flonum): Use obj_common macro to defined
common fields.
(loc): Macro removed.
(set, mut): Macros conditionally defined for real functionality.
(list_collect, list_collect_nconc, list_collect_append): Replace
mutating operations with set.

* match.c (dest_set, v_cat, v_output, v_filter): Replace
mutating operations with set.

* stream.c (string_in_get_line, string_in_get_char,
strlist_out_put_string, strlist_out_put_char): Replace mutating
operations with set.

* unwind.c (uw_register_subtype): Replace mutating operation with set.

1 files changed, 3 insertions, 3 deletions

diff --git a/filter.c b/filter.c
index 958d4911..0498ced2 100644
--- a/filter.c
+++ b/filter.c
@@ -61,7 +61,7 @@ static val trie_add(val trie, val key, val value)
     val newnode_p;
     val *loc = gethash_l(node, ch, &newnode_p);
     if (newnode_p)
-      *loc = make_hash(nil, nil, nil);
+      set(*loc, make_hash(nil, nil, nil));
     node = *loc;
   }
 
@@ -90,11 +90,11 @@ static void trie_compress(val *ptrie)
     val value = get_hash_userdata(trie);
 
     if (zerop(count)) {
-      *ptrie = value;
+      set(*ptrie, value);
     } else if (eq(count, one) && nullp(value)) {
       val iter = hash_begin(trie);
       val cell = hash_next(&iter);
-      *ptrie = cons(car(cell), cdr(cell));
+      set(*ptrie, cons(car(cell), cdr(cell)));
       trie_compress(cdr_l(*ptrie));
     } else {
       val cell, iter = hash_begin(trie);