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a part of T_DATA object can Ractor#send

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T_DATA objects can refer unshareable objects and they should be
copied recursively, however there is no way to replace with copied
unshareable objects. However, if a T_DATA object refers only
shareable objects, there is no need to replace. So this kind of
T_DATA object (such as Time, Dir, File::Status and so on) can be
sent by Ractor.send.
This commit is contained in:
Koichi Sasada 2020-11-06 03:21:08 +09:00
parent 4948982b53
commit 7718e9588b
Notes: git 2020-11-06 16:15:03 +09:00
1 changed files with 26 additions and 0 deletions
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26
ractor.c
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@ -2181,6 +2181,24 @@ void rb_hash_transient_heap_evacuate(VALUE hash, int promote);
void rb_struct_transient_heap_evacuate(VALUE st, int promote);
#endif
static void
obj_refer_only_shareables_p_i(VALUE obj, void *ptr)
{
int *pcnt = (int *)ptr;
if (!rb_ractor_shareable_p(obj)) {
pcnt++;
}
}
static int
obj_refer_only_shareables_p(VALUE obj)
{
int cnt = 0;
rb_objspace_reachable_objects_from(obj, obj_refer_only_shareables_p_i, &cnt);
return cnt == 0;
}
static int
obj_traverse_replace_i(VALUE obj, struct obj_traverse_replace_data *data)
{
@ -2329,6 +2347,14 @@ obj_traverse_replace_i(VALUE obj, struct obj_traverse_replace_data *data)
break;
case T_DATA:
if (!data->move && obj_refer_only_shareables_p(obj)) {
break;
}
else {
rb_raise(rb_eRactorError, "can not %s %"PRIsVALUE" object.",
data->move ? "move" : "copy", rb_class_of(obj));
}
case T_IMEMO:
// not supported yet
return 1;