+ if (curr->is_write()) {
+// std::memory_order order = curr->get_mo();
+// switch(order) {
+// case std::memory_order_relaxed:
+// return get_thread(curr);
+// case std::memory_order_release:
+// return get_thread(curr);
+// defalut:
+// return NULL;
+// }
+ return NULL;
+ }
+