gc.c: promote long-lived NODE_CREF objects to oldgen

* include/ruby/ruby.h: add RGENGC_WB_PROTECTED_NODE_CREF setting
  In a large app, this reduces the size of
  remembered_shady_object_count by 80%. [Bug #9225] [ruby-core:58947]
* gc.c (rb_node_newnode): add FL_WB_PROTECTED flag to NODE_CREF
* class.c (rewrite_cref_stack): insert OBJ_WRITE for NODE_CREF
* iseq.c (set_relation): ditto
* iseq.c (rb_iseq_clone): ditto
* vm_eval.c (rb_yield_refine_block): ditto
* vm_insnhelper.c (vm_cref_push): ditto
* vm_insnhelper.h (COPY_CREF): ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44059 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 3 deletions

diff --git a/iseq.c b/iseq.c
index df1c16132f..469ae117c8 100644
--- a/iseq.c
+++ b/iseq.c
@@ -215,7 +215,7 @@ set_relation(rb_iseq_t *iseq, const VALUE parent)
 	    NODE *cref = NEW_CREF(th->top_wrapper);
 	    cref->nd_refinements = Qnil;
 	    cref->nd_visi = NOEX_PRIVATE;
-	    cref->nd_next = iseq->cref_stack;
+	    OBJ_WRITE(cref, &cref->nd_next, iseq->cref_stack);
 	    ISEQ_SET_CREF(iseq, cref);
 	}
 	iseq->local_iseq = iseq;
@@ -1930,10 +1930,10 @@ rb_iseq_clone(VALUE iseqval, VALUE newcbase)
     }
     if (newcbase) {
 	ISEQ_SET_CREF(iseq1, NEW_CREF(newcbase));
-	iseq1->cref_stack->nd_refinements = iseq0->cref_stack->nd_refinements;
+	OBJ_WRITE(iseq1->cref_stack, &iseq1->cref_stack->nd_refinements, iseq0->cref_stack->nd_refinements);
 	iseq1->cref_stack->nd_visi = iseq0->cref_stack->nd_visi;
 	if (iseq0->cref_stack->nd_next) {
-	    iseq1->cref_stack->nd_next = iseq0->cref_stack->nd_next;
+	    OBJ_WRITE(iseq1->cref_stack, &iseq1->cref_stack->nd_next, iseq0->cref_stack->nd_next);
 	}
 	OBJ_WRITE(iseq1, &iseq1->klass, newcbase);
     }