* 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, 6 insertions, 6 deletions

diff --git a/stream.c b/stream.c
index 46148b7c..e877d200 100644
--- a/stream.c
+++ b/stream.c
@@ -355,7 +355,7 @@ static val string_in_get_line(val stream)
   if (lt(pos, length_str(string))) {
     val nlpos = find_char(string, pos, chr('\n'));
     val result = sub_str(string, pos, nlpos);
-    *cdr_l(pair) = nlpos ? plus(nlpos, one) : length_str(string);
+    set(*cdr_l(pair), nlpos ? plus(nlpos, one) : length_str(string));
     return result;
   }
 
@@ -369,7 +369,7 @@ static val string_in_get_char(val stream)
   val pos = cdr(pair);
 
   if (lt(pos, length_str(string))) {
-    *cdr_l(pair) = plus(pos, one);
+    set(*cdr_l(pair), plus(pos, one));
     return chr_str(string, pos);
   }
 
@@ -584,8 +584,8 @@ static val strlist_out_put_string(val stream, val str)
     strstream = make_string_output_stream();
   }
 
-  *car_l(cell) = lines;
-  *cdr_l(cell) = strstream;
+  set(*car_l(cell), lines);
+  set(*cdr_l(cell), strstream);
 
   return t;
 }
@@ -602,8 +602,8 @@ static val strlist_out_put_char(val stream, val ch)
     put_char(ch, strstream);
   }
 
-  *car_l(cell) = lines;
-  *cdr_l(cell) = strstream;
+  set(*car_l(cell), lines);
+  set(*cdr_l(cell), strstream);
 
   return t;
 }