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gc.c: simple array for wmap

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* gc.c (wmap_finalize, wmap_aset_update): use simple malloced array
  instead of T_ARRAY, to reduce GC pressure.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44119 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2013-12-10 08:21:33 +00:00
parent 27947a449f
commit cdc2eeda6a
2 changed files with 41 additions and 18 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
Tue Dec 10 17:21:30 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* gc.c (wmap_finalize, wmap_aset_update): use simple malloced array
instead of T_ARRAY, to reduce GC pressure.
Tue Dec 10 15:56:48 2013 Aman Gupta <ruby@tmm1.net>
* gc.c (reflist_add): revert changes from r44109. it is unnecessary

54
gc.c
View file

@ -6235,7 +6235,6 @@ wmap_mark_map(st_data_t key, st_data_t val, st_data_t arg)
rb_objspace_t *objspace = (rb_objspace_t *)arg;
VALUE obj = (VALUE)val;
if (!is_live_object(objspace, obj)) return ST_DELETE;
gc_mark_ptr(objspace, obj);
return ST_CONTINUE;
}
@ -6250,7 +6249,8 @@ wmap_mark(void *ptr)
static int
wmap_free_map(st_data_t key, st_data_t val, st_data_t arg)
{
rb_ary_resize((VALUE)val, 0);
VALUE *ptr = (VALUE *)val;
ruby_sized_xfree(ptr, (ptr[0] + 1) * sizeof(VALUE));
return ST_CONTINUE;
}
@ -6263,11 +6263,11 @@ wmap_free(void *ptr)
st_free_table(w->wmap2obj);
}
size_t rb_ary_memsize(VALUE ary);
static int
wmap_memsize_map(st_data_t key, st_data_t val, st_data_t arg)
{
*(size_t *)arg += rb_ary_memsize((VALUE)val);
VALUE *ptr = (VALUE *)val;
*(size_t *)arg += (ptr[0] + 1) * sizeof(VALUE);
return ST_CONTINUE;
}
@ -6308,11 +6308,22 @@ wmap_allocate(VALUE klass)
static int
wmap_final_func(st_data_t *key, st_data_t *value, st_data_t arg, int existing)
{
VALUE wmap, ary;
VALUE wmap, *ptr, size, i, j;
if (!existing) return ST_STOP;
wmap = (VALUE)arg, ary = (VALUE)*value;
rb_ary_delete_same(ary, wmap);
if (!RARRAY_LEN(ary)) return ST_DELETE;
wmap = (VALUE)arg, ptr = (VALUE *)*value;
for (i = j = 1, size = ptr[0]; i <= size; ++i) {
if (ptr[i] != wmap) {
ptr[j++] = ptr[i];
}
}
if (j == 1) {
ruby_sized_xfree(ptr, i * sizeof(VALUE));
return ST_DELETE;
}
if (j < i) {
ptr = ruby_sized_xrealloc2(ptr, j, sizeof(VALUE), i);
ptr[0] = j;
}
return ST_CONTINUE;
}
@ -6320,8 +6331,7 @@ static VALUE
wmap_finalize(VALUE self, VALUE objid)
{
st_data_t orig, wmap, data;
VALUE obj, rids;
long i;
VALUE obj, *rids, i, size;
struct weakmap *w;
TypedData_Get_Struct(self, struct weakmap, &weakmap_type, w);
@ -6331,11 +6341,13 @@ wmap_finalize(VALUE self, VALUE objid)
/* obj is original referenced object and/or weak reference. */
orig = (st_data_t)obj;
if (st_delete(w->obj2wmap, &orig, &data)) {
rids = (VALUE)data;
for (i = 0; i < RARRAY_LEN(rids); ++i) {
wmap = (st_data_t)RARRAY_AREF(rids, i);
rids = (VALUE *)data;
size = *rids++;
for (i = 0; i < size; ++i) {
wmap = (st_data_t)rids[i];
st_delete(w->wmap2obj, &wmap, NULL);
}
ruby_sized_xfree((VALUE *)data, (size + 1) * sizeof(VALUE));
}
wmap = (st_data_t)obj;
@ -6511,15 +6523,21 @@ wmap_values(VALUE self)
static int
wmap_aset_update(st_data_t *key, st_data_t *val, st_data_t arg, int existing)
{
VALUE size, *ptr, *optr;
if (existing) {
rb_ary_push((VALUE)*val, (VALUE)arg);
return ST_STOP;
size = (ptr = optr = (VALUE *)*val)[0];
++size;
ptr = ruby_sized_xrealloc2(ptr, size + 1, sizeof(VALUE), size);
}
else {
VALUE ary = rb_ary_tmp_new(1);
*val = (st_data_t)ary;
rb_ary_push(ary, (VALUE)arg);
optr = 0;
size = 1;
ptr = ruby_xmalloc2(2, sizeof(VALUE));
}
ptr[0] = size;
ptr[size] = (VALUE)arg;
if (ptr == optr) return ST_STOP;
*val = (st_data_t)ptr;
return ST_CONTINUE;
}